CN201364496Y

CN201364496Y - Inverter air conditioner main board testing system

Info

Publication number: CN201364496Y
Application number: CNU2009200015603U
Authority: CN
Inventors: 唐政清; 吴学伟; 冯宇杰; 徐朝建
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-12-16
Anticipated expiration: 2019-01-15

Abstract

The utility model relates to an inverter air conditioner main board testing system, which comprises a single chip microcomputer, a communication module, an LCD module, a key-press detecting module and a power supply, wherein the communication module, the LCD module and the key-press detecting module are connected with the single chip microcomputer, and the power supply supplies power for all the devices. The communication module comprises a serial communication chip connected with the single chip microcomputer and an RS485 communication cable connected with the serial communication chip. The inverter air conditioner main board testing system can provide signals in various conditions for testing main boards, saves electricity power consumed by operation of compressors and testing time, reduces testing difficulty, increases main board testing efficiency, is free of testing with heavy current, and is safer and more reliable.

Description

The convertible frequency air-conditioner main board testing system

Technical field

The utility model relates to a kind of test macro, particularly a kind of test macro that is used to test the mainboard of frequency-variable air conditioner outdoor machine.

Background technology

Frequency-variable air conditioner outdoor machine generally has mainboard and driven compressor control panel, connect by the RS485 connection between two control panels, control system based on this structure needs two supporting coupling together of control panel when testing, and the driven compressor control panel only could operate as normal under the situation of band compressor load, so, if under the test compression machine abnormal conditions (as IPM unusual etc.), total system at disposition, the operation response of mainboard particularly, at first just must satisfy the compression function and this unusual all conditions occur, it is the generation of an exception condition, may need to wait for for a long time, even the abnormal conditions that also will try every means and could allow the compressor appearance need, bring very big difficulty for the test of mainboard.

The utility model content

Technical problem to be solved in the utility model provides a kind of convertible frequency air-conditioner main board testing system, and it can selectively send to mainboard with the parameters such as compressor behavior of directly setting test usefulness.

For solving the problems of the technologies described above, the utility model convertible frequency air-conditioner main board testing system comprises:

Single-chip microcomputer is used for output and the needed signal of storage mainboard;

The communication module that is connected with single-chip microcomputer is used to realize the communication between single-chip microcomputer and the mainboard;

The LCD module that is connected with single-chip microcomputer is used to show selected parameter;

The button detection module that is connected with single-chip microcomputer is used to accept operator's input; And

Power supply.

By such scheme as seen, the utility model can provide the signal of various conditions for testing host, saves electric energy and test duration that compressor operating consumes, reduce difficulty of test, improve the efficient of test master control control panel, and do not need to be with the forceful electric power test, more safe and reliable.

A kind of preferred version of the present utility model, described communication module comprise serial communication chip that is connected with single-chip microcomputer and the RS485 connection that is connected with the serial communication chip.By this scheme as can be known, can make between the utility model and the mainboard communication distance long and antijamming capability good.

Description of drawings

Fig. 1 is a circuit structure diagram of the present utility model;

Fig. 2 is an operation interface of the present utility model;

Fig. 3 is normal first page that operation of the present utility model shows;

Fig. 4 is that the parameter that operation of the present utility model shows is decided the page;

Fig. 5 is first page of the fault that shows of operation of the present utility model;

Fig. 6 is that the fault that operation of the present utility model shows is set the page;

Fig. 7 is the circuit diagram of chip MAX487;

Fig. 8 is the circuit diagram of button detection module;

Fig. 9 is the connecting circuit figure of button detection module and single-chip microcomputer;

Figure 10 is the circuit diagram of LCD driver module.

Embodiment

As shown in Figure 1, the utility model comprises single-chip microcomputer 1, the communication module 2 that is connected with single-chip microcomputer 1, the LCD module 3 that is connected with single-chip microcomputer 1, three LED light 6 that are connected with single-chip microcomputer 1, the button detection module 4 that is connected with single-chip microcomputer 1 and the power supply 5 of powering to each device.

In single-chip microcomputer 1, set various state corresponding parameters in advance with compressor, after the energising, LCD module 3 is as man-machine communication's interface, some preset parameters have been shown, the operator sets state corresponding parameters with compressor selectively by button detection module 4, confirm then to be transferred to mainboard (not shown) by communication module 2, mainboard is made actions such as regulating various loads according to the parameter information that receives.

Wherein, single-chip microcomputer 1 adopts the MC68HC906AP64 chip; Referring to Fig. 7, communication module is serial communication chip MAX487 and RS485 connection, the RO pin of MAX487 is connected with the UART receiving end of single-chip microcomputer 1, the DI pin of MAX487 is connected with the UART transmitting terminal of single-chip microcomputer 1, the DE of MAX487, RE end is connected the A of MAX487, B termination RS485 connection with the Enable Pin of single-chip microcomputer 1; The RS485 connection adopts four twisted wires; Referring to Figure 10, LCD module 3 adopts the LCD12864 displays, the corresponding connection of pin of the pin of LCD driving circuit and single-chip microcomputer in the LCD12864 display; Referring to Fig. 8 and Fig. 9, the button in the button detection module 4 directly is connected one by one with the pin of the GPIO mouth of single-chip microcomputer 1, and low level is effective.

As shown in Figure 2, operation interface figure of the present utility model comprises: three LED light 6 are respectively applied for display power supply state, running status, malfunction; The ON/OFF key, the switching on and shutting down of control unit are switched; Reset key sends clear wrong instruction, and system is detection failure again; Options button upwards in menu is selected, by this key cursor upwards or be moved to the left one, revising under the data, increases numerical value by this key; Downward options button in menu is selected,, revising under the data, reduces numerical value by this key downwards by this key cursor or move right one; ESC Escape is pressed this and is good for, and returns and checks page or leaf; Determine key, in menu is selected, confirm options by this key; And the display window of LCD12864 display.

When just having begun to power on operation, show that the pilot lamp of fault does not glimmer, system works is normal, and display window shows normal first page, (in conjunction with Fig. 3) " frequency " expression frequency values, and first row is order and the frequency of setting; Second row is the state and the frequency of feedback; The third line is represented power source voltage and type; Fourth line is represented compressor current, AC power electric current.

Enter parameter by definite key and decide the page when display window shows described normal first page, (in conjunction with Fig. 4) enters parameter for the first time and decides the page, and cursor is parked on the numerical value of setpoint frequency, presses key modification setting value up and down this moment; Press definite key again, cursor forwards the second capable heatsink temperature of setting respectively on IPM (left side) and the PFC (right side) to, scope 50～150 degree, acquiescence 70 degree; Press definite key again, cursor forwards the third line to, and select by key up and down this moment is single-phase or three-phase supply, sets busbar voltage; Withdraw from this page by ESC Escape again.

When fault occurs, or by upwards select or downwards options button can enter first page of fault, (in conjunction with Fig. 6) if show the third line in first page of the fault, expression has connected the mainboard communication; " XXX " expression failure code of first row, second row shows when the prior fault title.

Enter the fault setting page by definite key when display window shows first page of fault, (in conjunction with Fig. 6) presses the acknowledgement key moving cursor, presses up and down arrow keys, sets or cancels corresponding Reflector; Column of figure is represented the abnormality byte of agreement correspondence, and the position of byte correspondence represented in the line number word.

Certainly, technical conceive of the present utility model is not limited in the foregoing description, for those of ordinary skills, without the simple replacement of creative work, still belongs to the scope that the utility model discloses based on the utility model.

Claims

1, a kind of convertible frequency air-conditioner main board testing system is characterized in that, comprising:

The key-press module that is connected with single-chip microcomputer is used to accept operator's input; And

Power supply.

2, convertible frequency air-conditioner main board testing system according to claim 1 is characterized in that, described communication module comprises serial communication chip that is connected with single-chip microcomputer and peripheral circuit and the RS485 connection that is connected with the serial communication chip.

3, convertible frequency air-conditioner main board testing system according to claim 1 is characterized in that, described LCD module comprises the LCD driving circuit and the LCD display that links to each other with driving circuit, shows the signal parameter that single-chip microcomputer is exported by LCD display.

4, convertible frequency air-conditioner main board testing system according to claim 3 is characterized in that, described single-chip microcomputer is chip MC68HC906AP64.

5, convertible frequency air-conditioner main board testing system according to claim 4, it is characterized in that, described serial communication chip is chip MAX487, the RO pin of chip MAX487 is connected with the UART receiving end of single-chip microcomputer, the DI pin of chip MAX487 is connected with the UART transmitting terminal of single-chip microcomputer, the DE of chip MAX487, RE end is connected the A of chip MAX487, B termination RS485 connection with the Enable Pin of single-chip microcomputer.

6, convertible frequency air-conditioner main board testing system according to claim 3 is characterized in that, described LCD module is the LCD12864 display, the corresponding connection of pin of the pin of LCD driving circuit and single-chip microcomputer in the described LCD12864 display.

7, convertible frequency air-conditioner main board testing system according to claim 6 is characterized in that, the button in the described button detection module is connected one by one with the pin of the GPIO mouth of single-chip microcomputer, and low level is effective.

8, according to any described convertible frequency air-conditioner main board testing system among the claim 1-7, it is characterized in that also comprise the LED light that is connected with single-chip microcomputer, described LED light is used for the state of display power supply, operation and fault.