CN102765563B - Container cooler and display control method thereof - Google Patents

Abstract

The invention discloses a container cooler and a display control method thereof. Wherein, this container cold machine includes: the key board module is connected with the main chip control module and used for receiving input actions of a user, and the main chip control module prestores display page contents directly corresponding to the input actions; and the display module is connected with the main chip control module and is used for displaying page content directly corresponding to the input action, and the page content comprises unit function options, unit parameters and/or fault information. The container cooler can be simply and conveniently operated through the invention.

Description

Container refrigerator and its display control method

technical field

The invention relates to the field of container refrigerators, in particular to a container refrigerator and a display control method thereof.

Background technique

The container refrigerator is a refrigeration equipment used in transportation that requires environments such as temperature and humidity; it is a refrigeration unit that requires human-computer interaction. Most of the time, the operation interface is the best way to feedback the current real-time working status of the unit important parts. At the same time, the operation interface provides the setting of the working parameters of the unit, so as to achieve the purpose of finally controlling the unit.

In the prior art, the main display interface in the container refrigerator industry usually adopts a segment code liquid crystal display screen plus a function code to realize operation and display.

Take the container chiller of Carrier Corporation of the United States as an example. Its container chiller adopts the operation method of two segment code LCD screens plus function codes. In order to query or set parameters, it is necessary to select according to the function code provided by Carrier (the function code is provided by Carrier on the surface of the electric control cabinet of the container refrigerator). Each operation must first enter the code selection state, and then press the up and down keys to switch function codes in turn. Among the two segment code LCD screens, the left segment code LCD screen displays the current function code, and the right segment code LCD screen displays the unit parameters corresponding to the code. Only one section of code and the corresponding unit parameters can be displayed at a time. If you need to query another parameter, you need to switch to another code. This method is simple to implement and cumbersome to operate. Pressing the key many times can easily lead to key damage.

US Thermo King Company uses a single 128*16 dot-matrix LCD screen plus combined function codes for operation. Follow the function codes provided on the panel of the electric control cabinet to perform query and change operations, and some function codes need to be combined with keys to realize functional operations. The operation of the panel still cannot be separated from the manual, which is inconvenient to operate.

Japan's Daikin and Denmark's Maersk also use segment code LCD screen plus function code operation, and the panel of the electric control cabinet provides function code operation instructions.

It can be seen from the above description that the operation of the container refrigerator in the prior art is cumbersome, and the operation is even more inconvenient when the panel manual is damaged or the visibility of the field of view is low.

Contents of the invention

The present invention is proposed in view of the cumbersome operation of container refrigerators in the prior art. Therefore, the main purpose of the present invention is to provide an easy-to-operate container refrigerator and its display control method to solve the above problems.

In order to achieve the above object, according to one aspect of the present invention, a container refrigerator is provided, which includes: a main chip control module; a button board module connected to the main chip control module, for receiving user input actions , the main chip control module pre-stores the display page content directly corresponding to each input action; and the display module is connected with the main chip control module and is used to display the page content directly corresponding to the input action. The page content includes unit function options, Unit parameters or fault information.

Further, the display module adopts a dot-matrix liquid crystal display.

Further, the key board module adopts array keys.

Further, the array keys include a group of basic function keys and a group of shortcut function keys, and the group of basic function keys includes a power switch key, which is used to receive power switch information input by the user; a menu key, which is used to receive menu information input by the user. , used to receive the execution confirmation input by the user; the shortcut function key group includes: the setting key, used to receive the setting information input by the user; the return air/supply air temperature switching key, used to receive the switching information of the return air temperature and the supply air temperature ; The defrost control key is used to receive the defrost control information input by the user; the adjustment key includes four adjustment keys, up, down, left, and right, used to receive the adjustment information input by the user; the return key is used to receive the return information input by the user; and The Celsius/Fahrenheit temperature switching key is used to receive the switching information of the temperature unit Celsius and Fahrenheit.

Further, the main chip control module is also used to perform the following operations during initialization: associating the functions corresponding to each input action and the content of the display page directly corresponding to it; executing the key scanning action of the key board module; obtaining the key state of the key board module Information; setting the key function of each key of the key board module; and setting the operation cycle of the key scanning action.

Further, the main chip control module includes: a button driving module, the button driving module includes a first timer, which is used to set the operation cycle of the button scanning action as a first predetermined time.

Further, the main chip control module is also used for performing the following operations during initialization: setting the display information of the display module; setting the operation period of the display information; and setting the driving state of the display module.

Further, the main chip control module further includes: a second timer, which is used to set an operation cycle of displaying information as a second predetermined time.

Further, the main chip control module also includes: a display driver module, which is used to encapsulate the action information of each key, and the display page content directly corresponding to each input action, and perform page switching according to the key action;

Further, the main chip control module also includes a debounce module, which is used to perform a debounce process after each key scanning action.

In order to achieve the above object, according to another aspect of the present invention, a display control method for a container refrigerator is provided, including: the main chip control module receives input actions from the keypad module; and the main chip control module controls the display module to display and Input the unit parameters corresponding to the action.

Further, after the main chip control module receives the input action from the key board module, the display control method of the container refrigerator further includes: judging whether the input action includes unit action information, wherein the unit action information is used to indicate the action of the unit; When the action does not include unit action information, the main chip control module controls the display module to display the display interface during initialization; when the input action includes unit action information, the main chip control module controls the display module to display the unit parameters corresponding to the input action.

Further, before the main chip control module receives the input action from the key board module, the display control method of the container refrigerator also includes: the main chip control module performs the following initialization operations: execute the key scanning action of the key board module; acquire the key board module key state information; set the key function of each key of the key board module; and set the operation cycle of the key scanning action.

Further, before the main chip control module receives the input action from the keypad module, the method also includes: the main chip control module performs the following initialization operations: associating the functions corresponding to each input action and the content of the display page directly corresponding to it; The key scanning action of the board module; the key state information of the key board module is acquired; the key function of each key of the key board module is set; and the operation period of the key scanning action is set.

Further, the main chip control module is also used for performing the following operations during initialization: setting the display information of the display module; setting the operation period of the display information; and setting the driving state of the display module.

Further, the main chip control module also performs the following operations during initialization: package and solidify each key action information and display page content directly corresponding to each input action through functions; and perform page display switching according to the key action.

According to the present invention, a container refrigerator comprising the following structure is adopted: a button panel module, connected to the main chip control module, to receive user input actions; a display module, connected to the main chip control module, to display unit parameters corresponding to the input actions , by pre-storing the content of the display page directly corresponding to each input action, and establishing the association between the function corresponding to each key input action and the content of the display page directly corresponding to it, the WYSIWYG display mode of the container refrigerator is realized. It is not necessary to obtain unit information by querying function codes, and can be operated simply and conveniently.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a schematic diagram of a container refrigerator according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an array button of a container refrigerator according to an embodiment of the present invention;

Fig. 3 is a flowchart of a display control method of a container refrigerator according to an embodiment of the present invention;

Fig. 4 is a flowchart of a display control method of a container refrigerator in a preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of the main page displayed on the display screen of the container refrigerator according to an embodiment of the present invention;

Fig. 6 and Fig. 7 are the schematic diagrams of the menu query page displayed on the display screen of the container refrigerator according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of a fault record query page displayed on a container refrigerator display screen according to an embodiment of the present invention;

Fig. 9 and Fig. 10 are schematic diagrams of the temperature switching page displayed on the display screen of the container cooler according to the embodiment of the present invention;

Fig. 11 is a schematic diagram of a container refrigerator display screen display setting page according to an embodiment of the present invention;

Fig. 12 is a schematic diagram showing a defrosting control page displayed on the display screen of a container refrigerator according to an embodiment of the present invention; and

Fig. 13 is a pin connection diagram of the main chip module of the container refrigerator according to the embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

Fig. 1 is a schematic diagram of a container cooling device according to an embodiment of the present invention.

As shown in Figure 1, the device includes: a main chip control module 4; a button board module 2, which is connected to the main chip control module 4 and is used to receive user input actions. The display page content; and the display module 6, which is connected with the main chip control module 4, is used to display the page content directly corresponding to the input action, and the page content includes unit function options, unit parameters and/or fault information.

In the above-mentioned container refrigerator, the key board module 2 receives the user's input action and is connected with the main chip control module 4, and the display panel module 6 is connected with the main chip control module 4 for displaying the unit parameters corresponding to the input action, In this way, when operating the container chiller, the display content is what you see is what you get, no need to be equipped with function table instructions, and no need for the operator to search for the corresponding function code, thereby realizing the effect of convenient operation of the container chiller.

Preferably, the display module 6 adopts a dot-matrix liquid crystal display. By adopting a dot-matrix liquid crystal display, it is possible to achieve an effect suitable for use at low temperatures.

Preferably, the keypad module 2 adopts array keys. Through the array keys, the operation can be made more convenient.

Fig. 2 is a schematic diagram of an array button of a container refrigerator according to an embodiment of the present invention.

As shown in Figure 2, the container refrigerator array button of the present invention includes: a power switch key, which is used to receive the power switch information input by the user. When the unit is in the power-on and shutdown state, the unit is turned on after pressing this key for 1 second; the unit is in the power-on state , press this key for 1 second to shut down the unit; the setting key is used to receive the setting information input by the user, including temperature setting and humidity setting; the menu key is used to receive the menu information input by the user, the menu information includes: status list, displaying the unit running Real-time parameters; function settings, including energy-saving mode on or off, dehumidification mode on or off, user variable settings, USDA settings, date and time settings (check the current date and time and modify the date and time) and container number (check the current container number and modification date and time); PTI detection, including PTI detection options (all detection, detection of 01-06 items, detection of 01-08 items and single detection items), PTI operation control, viewing of PTI detection results and PTI user-defined items; unit Information, displaying the serial number of the controller and displaying the software version number; return air/supply air temperature switching key, used to receive the switching information of return air temperature and supply air temperature, press this key to realize the display of return air temperature and supply air temperature on the digital tube The display on the display switch, and automatically switch back to the default display mode after 5 seconds; the confirmation key is used to receive the execution confirmation input by the user; the defrosting control key is used to receive the defrosting control information input by the user, including: defrosting Mode selection: automatic mode (AUTO), manual mode (MANUAL), timing mode (TIME); manual defrosting option: ON/OFF, this option is only valid when the defrosting mode is selected as manual mode. Select ON to start manual defrosting immediately, select OFF to exit manual defrosting immediately; time interval between defrosting cycles; adjustment keys, including four adjustment keys up, down, left, and right, used to receive adjustment information input by the user: up arrow adjustment key, Up to change an option or increase the setting value; Down arrow adjustment key, down to change an option or decrease the setting value; Left arrow adjustment key, used to select the cursor option to the left; Right arrow adjustment key , used to select the cursor option to the right; the return key, used to receive the return information input by the user, and return to the previous menu; and the Celsius/Fahrenheit temperature switching key, used to receive the switching information of the temperature unit Celsius and Fahrenheit.

Specifically, the functions corresponding to each button in the button board module 2 can be shown in the following table:

After the power switch is turned on, the main page of the display screen (as shown in Figure 5) displays the current set temperature, and the chip scans the button pins at the same time. Sequentially scan whether the keys are pressed. Press the "MENU" menu key to enter the menu query page (Figure 6, Figure 7).

The menu query page is displayed in English, and the content corresponding to each option can be directly judged according to the English words on the page. When the cursor enters the menu query page, the default setting is the first option, and the page between Figure 6 and Figure 7 can be switched by the up and down arrow adjustment keys. When the cursor selects the corresponding option, if the item has the next submenu mark "->", press the "OK" confirmation key to enter the next menu.

When the cursor moves to "3, Error record", press the "OK" confirmation key to enter the fault record query page (Figure 8). Switch pages still use the up and down arrow keys to adjust.

If you need to return to the upper menu, press the "BACK" return button, the page will jump to the previous page, and press the "BACK" return button to return step by step.

The embodiment of the present invention also provides shortcut keys for quick access to commonly used function keys:

"℃/°F" Celsius/Fahrenheit temperature switching key is a shortcut key for quickly switching between the two temperature units when they are displayed. When the Celsius temperature is set at -30°C, press the "°C/°F" Celsius/Fahrenheit temperature switching key, and the corresponding switched Fahrenheit temperature will be displayed as -22.0°F (Figure 9, Figure 10).

"RET/SUP" return air/supply air temperature switching key, after pressing this key, the additional supply air and return air indicator lights will switch accordingly.

"SET" setting key, press this key to enter the page of "set temperature" and "set humidity" (Figure 11), adjust the left and right arrow keys to switch the cursor to select "set temperature" or "set humidity", up and down Arrow adjustment keys change the value where the cursor is located.

When the cursor is at the "temperature setting" position, if the temperature unit is Celsius, short press the up arrow adjustment key once to add 0.1 degrees, and press and hold it for more than 1 second to automatically add 1 degree each time; short press the down arrow adjustment key 1 Subtract 0.1 degrees each time, and after long pressing for more than 1 second, it will automatically subtract 1 degree each time. If the temperature unit is Fahrenheit, short press the up arrow adjustment button once to add 0.1 degrees or 0.2 degrees, and press and hold it for more than 1 second to automatically add 1 degree each time; short press the down arrow adjustment button once to subtract 0.1 degrees or 0.2 degrees , after long pressing for more than 1 second, it will automatically decrease by 1 degree each time. After the setting is completed, press the "OK" confirmation key to confirm that the input is valid.

When the cursor is at the "humidity setting", each press of the up arrow adjustment key increases by 0.1%, and each press of the down arrow adjustment key decreases by 0.1%; Add or subtract 0.1%. After the setting is completed, press the "OK" confirmation key to confirm that the input is valid.

"DEF" defrosting control key, press this key to enter the defrosting selection page (Figure 12), and press the "OK" confirmation key to switch the on/off status of the option where the cursor is located. In the "Defrost Time" option, press the "OK" confirmation key to switch the length of the defrost time period.

Preferably, the main chip control module 4 is also used to perform the following operations during initialization: the key scanning action of the key board module 2; obtain the key state information of the key board module 2; set the key function of each key of the key board module 2; And set the running cycle of the key scanning action. At this time, in this embodiment, the keypad module enters the working state by making the main chip control the initialization operation of the module 4 .

Preferably, the main chip control module 4 includes: a first timer, which is used to set the operation cycle of the key scanning action as a first predetermined time.

Preferably, the main chip control module 4 is also used for performing the following operations during initialization: setting the display information of the display module 6 ; setting the operation period of the display information; and setting the driving state of the display module 6 . At this time, in this embodiment, due to the initialization operation of the main chip control module 4, the display module 6 enters the working state and works according to the set parameters.

After booting, the main chip program runs and initializes the chip, including stack space, chip main frequency, interrupt, pin level, etc. Fig. 13 is a pin connection diagram of the main chip module of the container refrigerator according to an embodiment of the present invention. As shown in Fig. 13, the key is initialized: the pin is initialized as a common I/O port, and the input and output directions of the pin are set: Fig. KEY_IN1~KEY_IN4 in 13 are input direction pins, and KEY_OUT1~KEY_OUT3 are output direction pins.

LCD screen pin initialization: Initialize each data pin (LCM_DB0~LCM_DB7) as low level (no output) by default; set the left and right screen selection pins (LCM_CS1, LCM_CS2) of the LCD screen as high level (selected state ); Set the enable pin of the LCD display to low level (the output data is invalid); LCM_RTS must be set to high level after each pin is initialized, because the reset is valid when the pin is low level. Set the display interface in the initial state of the LCD screen. When displaying the interface, you need to control the output through the enable pin. After the data transmission of the 8 pins of LCM_DB is completed, the enable pin is set to low level to prevent interference from entering the data pin. Display Error.

Since the initialization time of each chip is not consistent, the interrupt should be turned off during the initialization process to prevent the chip from entering an abnormal state, and the interrupt service should be turned on after a certain period of time delay (the delay depends on the actual chip).

Preferably, the main chip control module 4 further includes: a second timer, which is used to set the operation cycle of displaying information as a second predetermined time.

Preferably, the main chip control module 4 also includes: a display driver module, which is used to encapsulate the button action information, and displays the unit parameters corresponding to the input action; and a debounce module, which is used to perform a debounce process after each button scan action .

Set the timer to scan the keys regularly in the key driver. Through the principle of matrix key scanning, we can know that the scanning implementation method is as follows: set KEY_IN1~KEY_IN4 to high level during initialization, set KEY_OUT1 to low level, and KEY_OUT2 and KEY_OUT3 to high level during the first scan; then scan KEY_IN1~ KEY_IN4 pin level; it can be judged that when the keys intersecting with KEY_OUT1 among KEY_IN1~KEY_IN4 are activated, the pin levels of KEY_IN1~KEY_IN4 will be forcibly pulled down. In the same way, then set KEY_OUT2 to low level, KEY_OUT1 and KEY_OUT3 to high level, and then scan the levels of KEY_IN1~KEY_IN4 pins. Finally, set KEY_OU3 to low level, KEY_OUT1 and KEY_OUT2 to high level, and then scan the levels of KEY_IN1~KEY_IN4 pins. By alternately setting the levels of the KEY_OUT1~KEY_OUT3 pins three times and scanning the levels of the KEY_IN1~KEY_IN4 pins 12 times, each key action can be directly judged. This method can also realize simultaneous button recognition.

The timing duration of the first timer of the button is generally set to 10ms once at the first time, and the debounce time is set after each scan to achieve accurate button operation. Generally, it is set between 10ms and 100ms, and the debounce time is too short to guarantee the debounce Shaking effect, if the time is too long, it will cause the button action not to be real-time.

After the key value is scanned, it is sent to the key handler for processing through the global variable. In the button processing program, by selecting a state function such as a switch function, it is possible to simply and directly classify and execute the processing action corresponding to each button value, judge the display page method corresponding to the button in each event, and transmit the page to be displayed on the LCD screen to the LCD in the display program on the display. In addition, through the switch function, the shortcut key function in the panel can be easily realized.

In the LCD driver, all the displayed button actions are encapsulated into a function, so that it is not necessary to directly set the chip pins every time it is displayed, and avoid repeatedly writing the driver work. In the initialization step, the pin configuration status of the LCD driver is displayed.

The display program of the liquid crystal display screen presets page content respectively, and sets the display coordinates of each display content. The display program runs regularly through the second timer. The displayed content switches pages according to the key value transmitted from the key action function.

The invention also provides a display control method of the container refrigerator.

Fig. 3 is a flowchart of a display control method for a container refrigerator according to an embodiment of the present invention.

As shown in Figure 3, the display control method for container refrigerators according to the embodiment of the present invention includes: step S302, the main chip control module receives input actions from the keypad module, and the main chip control module pre-stores the input actions directly corresponding to each input action. display page content; and step S304, the main chip control module associates each input action and the display page content directly corresponding to it and controls the display module to display the page content directly corresponding to the input action, and the page content includes unit function options, unit parameters and/or or fault information.

Fig. 4 is a flow chart of the display control method of the container refrigerator according to the preferred embodiment of the present invention.

As shown in Figure 4, according to the display control method of the container refrigerator according to the preferred embodiment of the present invention, after the main chip control module receives the input action from the key board module, the display control method of the container refrigerator further includes: judging whether the input action is Contains unit action information, where the unit action information is used to indicate the unit action; when the input action does not include unit action information, the main chip control module controls the display module to display the display interface during initialization; when the input action includes unit action information, the main The chip control module controls the display module to display the unit parameters corresponding to the input actions.

Preferably, before the main chip control module receives the input action from the key board module, the display control method of the container refrigerator further includes: the main chip control module performs the following initialization operations: the key scanning action of the key board module; key state information; set the key function of each key of the key board module; and set the running cycle of the key scanning action.

From the above description, it can be seen that the present invention achieves the following technical effects: by adopting the mode that the key board module and the display module are directly connected with the main chip control module respectively, what you see is what you get displayed on the display module without Equipped with function table instructions, and then realized the purpose of simple and convenient operation.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. a container cooler, is characterized in that, comprising:

Master chip control module;

Key sheet module, be connected with described master chip control module, for receiving the input action of user, described master chip control module prestores the display page content directly corresponding with each input action, wherein, described master chip control module prestores the failure message directly corresponding with each input action; And

Display module, is connected with described master chip control module, for showing the content of pages directly corresponding with described input action, described content of pages comprises failure message, wherein, described display module is for showing the failure message directly corresponding with described input action

Wherein, described master chip control module also comprises:

Driver module, for encapsulating each actuation of keys information and the display page content directly corresponding with each input action; And carry out page display switching according to actuation of keys, wherein, the actuation of keys of display is all encapsulated in a function, process action corresponding to each key value is performed by selection mode function category, the page that LCDs will show is sent in the display routine of LCDs, preset content of pages respectively in the display routine of LCDs, and set the displaing coordinate of each displaying contents, the key value that displaying contents transmits according to actuation of keys function carries out the switching page.

2. container cooler according to claim 1, is characterized in that, described display module adopts dot matrix liquid crystal display.

3. container cooler according to claim 1, is characterized in that, described key sheet module adopts array button, and comprise basic function key group, described basic function key group comprises:

Power switch key, for receiving the power switch information of user's input;

Menu key, for receiving the menu information of user's input; And

Acknowledgement key, for receive user input perform confirmation.

4. container cooler according to claim 3, is characterized in that, described array button also comprises quick functional key group, and described quick functional key group comprises:

Key is set, for receiving the configuration information of user's input;

Return air/wind pushing temperature switch key, for receiving the handover information of return air temperature and wind pushing temperature;

Defrosting control key, for receiving the defrosting control information of user's input;

Adjustment key, comprises four adjustment keys up and down, for receiving the adjustment information of user's input;

Return key, for receiving the return message of user's input; And

Celsius/Fahrenheit scale switch key, for receiving the handover information of the Celsius and Fahrenheit of temperature unit.

5. container cooler according to claim 1, is characterized in that, described master chip control module is also for performing following operation when initialization:

Associate the function corresponding to each input action and the display page content directly corresponding with it;

Perform the key scan action of described key sheet module;

Obtain the key state information of described key sheet module;

Set the keypress function of each button of described key sheet module; And

Set the cycle of run of described key scan action.

6. container cooler according to claim 5, is characterized in that, described master chip control module comprises: button driver module, and described button driver module comprises timer, is the schedule time for setting the cycle of run of described key scan action.

7. container cooler according to claim 1, is characterized in that, described master chip control module is also for performing following operation when initialization:

Set the display information of described display module;

Set the cycle of run of described display information; And

Set the driving condition of described display module.

8. container cooler according to claim 7, is characterized in that, described master chip control module also comprises: timer, is the schedule time for setting the cycle of run of described display information.

9. container cooler according to claim 1, is characterized in that, described master chip control module also comprises:

Debounce module, for performing a debounce processing after each key scan action.

10. a display control method for container cooler, is characterized in that, comprising:

Master chip control module receives the input action from key sheet module, described master chip control module prestores the display page content directly corresponding with each input action, wherein, described master chip control module prestores the failure message directly corresponding with each input action; And

Described master chip control module associates each input action and the display page content directly corresponding with it and controls display module and shows the content of pages direct corresponding with described input action, described content of pages comprises failure message, wherein, described display module is for showing the failure message directly corresponding with described input action

Wherein, described master chip control module also performs following operation when initialization:

By function, package curing is carried out to each actuation of keys information and the display page content directly corresponding with each input action; And carry out page display switching according to actuation of keys,

Wherein, the actuation of keys of display is all encapsulated in a function, process action corresponding to each key value is performed by selection mode function category, the page that LCDs will show is sent in the display routine of LCDs, content of pages is preset respectively in the display routine of LCDs, and setting the displaing coordinate of each displaying contents, the key value that displaying contents transmits according to actuation of keys function carries out the switching page.

The display control method of 11. container coolers according to claim 10, is characterized in that, after master chip control module receives the input action from key sheet module, described method also comprises:

Judge whether described input action comprises unit action message, wherein, described unit action message is used to indicate unit action;

When described input action does not comprise described unit action message, described master chip control module controls display interface during described display module display initialization; And

When described input action comprises described unit action message, described master chip control module controls the described display module display display page content directly corresponding with described each input action, and carries out page display switching according to actuation of keys.

The display control method of 12. container coolers according to claim 10, is characterized in that, described master chip control module is also for performing following operation when initialization:

Set the display information of described display module;

Set the cycle of run of described display information; And

Set the driving condition of described display module.

The display control method of 13. container coolers according to claim 10, it is characterized in that, before master chip control module receives the input action from key sheet module, described method also comprises: described master chip control module performs following initialization operation:

Associate the function corresponding to each input action and the display page content directly corresponding with it;

Perform the key scan action of described key sheet module;

Obtain the key state information of described key sheet module;

Set the keypress function of each button of described key sheet module; And

Set the cycle of run of described key scan action.