CN204902435U - A handheld check out test set that is used for automatically controlled board of refrigerator to detect - Google Patents
A handheld check out test set that is used for automatically controlled board of refrigerator to detect Download PDFInfo
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- CN204902435U CN204902435U CN201520490961.5U CN201520490961U CN204902435U CN 204902435 U CN204902435 U CN 204902435U CN 201520490961 U CN201520490961 U CN 201520490961U CN 204902435 U CN204902435 U CN 204902435U
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- resistance
- pin
- refrigerator
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Abstract
The utility model relates to a handheld check out test set that is used for automatically controlled board of refrigerator to detect. Including casing and the inside control circuit of casing, control circuit includes mode control module, the main control module, display module and communication module, mode control module, display module and communication module all with the main control module connects. The utility model discloses simple structure, it is with low costs, can effectively detect fast whether the automatically controlled board of refrigerator the trouble, has improved after sales maintenance's convenience and accuracy, reduced the maintenance frequency, has reduced the expense that the user is used for after sales maintenance, has reduced the market defective rate of automatically controlled board, has promoted the brand trust.
Description
Technical field
The utility model relates to refrigerator technical field, particularly relates to a kind of hand-held checkout equipment detected for refrigerator electric control plate.
Background technology
At present when refrigerator after-sales service, particularly there is no concrete maintenance means for refrigerator electric control plate aspect, cannot judge that whether electric-controlled plate is normal, just change electric-controlled plate after usual complete machine goes wrong, the basic reason of machine failure cannot be searched.Cause late problems still to occur, do not find the underlying cause.Cause electrical control member fraction defective rise and user to the distrust of refrigerator brand.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, provides a kind of hand-held checkout equipment detected for refrigerator electric control plate.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of hand-held checkout equipment detected for refrigerator electric control plate, comprise the control circuit of housing and enclosure interior, described control circuit comprises mode control module, main control module, display module and communication module; Described mode control module, display module and communication module are all connected with described main control module.
The beneficial effects of the utility model are: the utility model is by hand-held checkout equipment and refrigerator electric control plate Direct Communication, load operating mode is forced accordingly according to the described hand-held checkout equipment of machine failure phenomenon setting, directly control respective load by refrigerator electric control plate to work independently, the operation conditions of refrigerator electric control plate feedback respective load, detect according to the respective code of display and the output port of operation conditions to refrigerator electric control plate respective load of respective load, and then judge electric-controlled plate whether fault.Improve convenience and the accuracy of after-sales service, decrease maintenance frequency, reduce the expense of user for after-sales service, reduce the market fraction defective of electric-controlled plate, improve brand trust degree.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described main control module comprises main control chip, resistance R10, electric capacity C8, resistance R17, resistance R18, electrochemical capacitor CE4, electric capacity C13 and electrochemical capacitor CE5, 5th pin of described main control chip connects the first power supply by resistance R10, by electric capacity C8 ground connection, 8th pin is by resistance R17 ground connection, parallel resistance R18 between 9th pin and the 10th pin, the two ends of described resistance R18 are connected with the input of crystal oscillator X1 respectively, the output head grounding of described crystal oscillator X1, 11st pin is by electrochemical capacitor CE4 ground connection, 12nd pin ground connection, 13rd pin connects the first power supply, and by electric capacity C13 in parallel and electrochemical capacitor CE5 ground connection.
The beneficial effect of above-mentioned further scheme is adopted to be: described resistance R10 and electric capacity C8 realizes the external reset of main control chip, and described electric capacity C13 and electrochemical capacitor CE5 realizes main control chip power filter.
Further, described hand-held checkout equipment is connected with refrigerator electric control plate by communication wire harness, and the TXD of described main control chip end is held with the RXD of refrigerator electric control plate and is connected, and the RXD of main control chip holds to hold with the TXD of refrigerator electric control plate and is connected.
Further, described communication wire harness adopts two-wire communication or single-wire communication.
Further, described mode control module adopts key control circuit, described key control circuit comprises control button, resistance R1, resistance R2 and electric capacity C1, described control button one end ground connection, the other end connects the first power supply by resistance R1, connected the SW-1 pin of main control chip by resistance R2, described resistance R2 connects one end of Master control chip by electric capacity C1 ground connection simultaneously.
The beneficial effect of above-mentioned further scheme is adopted to be: described electric capacity C1 realizes filtering, and described resistance R2 can reduce the input current of main control chip respective pin, and then protection main control chip, described resistance R1 is pull-up resistor.
Further, the quantity of described control button sets according to the actual requirements.
Further, described communication module comprises communication terminal, resistance R60, resistance R61, antistatic diode DD1, antistatic diode DD2, resistance R15, resistance R25, resistance R26 and electric capacity C7, described communication terminal is used for being connected with refrigerator electric control plate, described communication terminal is used for being connected with refrigerator electric control plate, 1st pin of described communication terminal is connected the TXD pin of main control chip with resistance R25 by resistance R60, simultaneously by termination first power supply of antistatic diode DD1, by the other end ground connection of antistatic diode DD1, 2nd pin is connected the RXD pin of main control chip by resistance R60 with resistance R26, termination first power supply of antistatic diode DD2 is passed through in one end of resistance R61 contact resistance R26, by the other end ground connection of antistatic diode DD2, connect the first power supply by resistance R15 simultaneously, resistance R26 connects one end of main control chip RXD pin by electric capacity C7 ground connection, 3rd pin ground connection, 4th pin connects second source.
The beneficial effect of above-mentioned further scheme is adopted to be: described telecommunication circuit comprises antistatic diode DD1 and antistatic diode DD2; electrostatic has the characteristic of high voltage, little energy; if do not processed; the abnormal even defective chip of system works may be caused; instantaneous high pressure can be made after increasing antistatic diode to import to power supply or ground; play the effect of releasing, and then protection port.
Further, described first power acquisition 5V power supply, described second source adopts 12V power supply.
Further, described display module comprises drive circuit and display unit.
Accompanying drawing explanation
The structural representation that Fig. 1 is connected with refrigerator electric control plate for hand-held checkout equipment described in the utility model embodiment;
Fig. 2 is the structural representation of hand-held checkout equipment described in the utility model embodiment;
Fig. 3 is main control module circuit structure diagram described in the utility model embodiment;
Fig. 4 is mode control module circuit structure diagram described in the utility model embodiment;
Fig. 5 is communication module circuit structure diagram described in the utility model embodiment.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, the utility model will be used for hand-held checkout equipment and the refrigerator electric control plate Direct Communication of the detection of refrigerator electric control plate, load operating mode is forced accordingly according to the described hand-held checkout equipment of machine failure phenomenon setting, directly control respective load by refrigerator electric control plate to work independently, the operation conditions of refrigerator electric control plate feedback respective load, detect according to the respective code of display and the output port of operation conditions to refrigerator electric control plate respective load of respective load, and then judge electric-controlled plate whether fault.Improve convenience and the accuracy of after-sales service, reduce the market fraction defective of electric-controlled plate.The described hand-held checkout equipment for the detection of refrigerator electric control plate comprises the control circuit of housing and enclosure interior.
As shown in Figure 2, described control circuit comprises mode control module, main control module, display module and communication module; Described mode control module, for forcing load start-up mode according to the setting of machine failure phenomenon is corresponding; Described main control module, for generating corresponding control instruction and respective code according to the pressure load start-up mode selected, by communication module, control instruction is sent to refrigerator electric control plate, respective load work is controlled, also for receiving the operation conditions of the described respective load of refrigerator electric control plate feedback by refrigerator electric control plate; Described display module, for the operation conditions of the respective load that the respective code and refrigerator electric control plate that show main control module generation are fed back, when respective load starts unsuccessfully, judge described electric-controlled plate fault, when respective load starts successfully, the output port of alert to refrigerator electric control plate respective load detects, and then judges electric-controlled plate whether fault; Described communication module, for realizing the data interaction of described main control module and refrigerator electric control plate.
As shown in Figure 3, described main control module comprises main control chip, resistance R10, electric capacity C8, resistance R17, resistance R18, electrochemical capacitor CE4, electric capacity C13 and electrochemical capacitor CE5, 5th pin of described main control chip connects the first power supply by resistance R10, by electric capacity C8 ground connection, 8th pin is by resistance R17 ground connection, parallel resistance R18 between 9th pin and the 10th pin, the two ends of described resistance R18 are connected with the input of crystal oscillator X1 respectively, the output head grounding of described crystal oscillator X1, 11st pin is by electrochemical capacitor CE4 ground connection, 12nd pin ground connection, 13rd pin connects the first power supply, and by electric capacity C13 in parallel and electrochemical capacitor CE5 ground connection.The span of described electrochemical capacitor CE4 is 0.47uF to 1uF, and the supply district of described main control chip is at 2.7 to 5.5V.
Described hand-held checkout equipment is connected with refrigerator electric control plate by communication wire harness, and the TXD of described main control chip end is held with the RXD of refrigerator electric control plate and is connected, and the RXD of main control chip holds to hold with the TXD of refrigerator electric control plate and is connected.Described communication wire harness adopts two-wire communication or single-wire communication.
As shown in Figure 4, described mode control module adopts key control circuit, described key control circuit comprises control button, resistance R1, resistance R2 and electric capacity C1, described control button one end ground connection, the other end connects the first power supply by resistance R1, connected the SW-1 pin of main control chip by resistance R2, described resistance R2 connects one end of Master control chip by electric capacity C1 ground connection simultaneously.The quantity of described control button sets according to the actual requirements, and described respective code sets according to actual needs.
As shown in Figure 5, described communication module comprises communication terminal, resistance R60, resistance R61, antistatic diode DD1, antistatic diode DD2, resistance R15, resistance R25, resistance R26 and electric capacity C7, described communication terminal is used for being connected with refrigerator electric control plate, described communication terminal is used for being connected with refrigerator electric control plate, 1st pin of described communication terminal is connected the TXD pin of main control chip with resistance R25 by resistance R60, simultaneously by termination first power supply of antistatic diode DD1, by the other end ground connection of antistatic diode DD1, 2nd pin is connected the RXD pin of main control chip by resistance R60 with resistance R26, termination first power supply of antistatic diode DD2 is passed through in one end of resistance R61 contact resistance R26, by the other end ground connection of antistatic diode DD2, connect the first power supply by resistance R15 simultaneously, resistance R26 connects one end of main control chip RXD pin by electric capacity C7 ground connection, 3rd pin ground connection, 4th pin connects second source.Described first power acquisition 5V power supply, described second source adopts 12V power supply.
Described display module comprises drive circuit and display unit, and described display unit can adopt numeral method, and display screen also can be adopted to show.Described display module can adopt all circuit that can play display effect in prior art.
Hand-held checkout equipment is by a communication wire harness and the communication of refrigerator electric control plate.Hand-held checkout equipment there are display screen, button, MCU etc.
Working method particularly: be connected with hand-held checkout equipment by refrigerator electric control plate by connection after refrigerator energising, the rear hand-held checkout equipment display screen of connection can show PASS and continue N second, illustrates that hand-held checkout equipment is connected with refrigerator electric control plate.Maintenance personal is according to the phenomenon of the failure of complete machine, and by forcing load start-up mode accordingly by key assignments, display screen can show corresponding code.The MCU of hand-held checkout equipment holds RXD end code information being sent to electric-controlled plate MCU by the TXD of connection, refrigerator electric control plate controls actual loaded work piece upon receipt of the instructions, and load operating condition is sent to the RXD end of hand-held checkout equipment by the TXD end of refrigerator electric control plate MCU.The MCU of hand-held checkout equipment shows the state ON/OFF of load on a display screen according to the information that refrigerator electric control plate sends.Maintenance personal again actual measurement once the corresponding load outputs mouth of electric-controlled plate whether normally work, if normal, electric-controlled plate fault-free, otherwise then electric-controlled plate fault.
Control circuit mainly contains mode control module, main control module, display module and communication module.
1. when button is pressed, button SW1 closes rear circuit voltage and drags down as 0V by original 5V, and now main control chip detects that button control port is that low-voltage (0V) confirms that corresponding button is pressed afterwards.
2. after main control chip receives corresponding pattern, the TXD port of main control chip MCU sends control instruction, and be sent to the RXD end of refrigerator electric control plate by connection, the display screen of hand-held checkout equipment shows corresponding code.
3. refrigerator electric control buttress controls respective load unlatching according to the control instruction received, the operation conditions of load is sent to the RXD end of the main control module of hand-held checkout equipment by refrigerator electric control plate TXD port by connection, hand-held checkout equipment can make corresponding prompting after receiving the operation conditions of carrying, and such as shows load and opens.
4. when respective load starts unsuccessfully; judge described electric-controlled plate fault; when respective load starts successfully; whether maintenance personal is normal according to the output port of corresponding code refrigerator electric control plate respective load; if abnormal, then judge electric-controlled plate fault, if normally; actual loading can be detected further, judge that respective load is normal or abnormal.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1., for the hand-held checkout equipment that refrigerator electric control plate detects, it is characterized in that, comprise the control circuit of housing and enclosure interior, described control circuit comprises mode control module, main control module, display module and communication module; Described mode control module, display module and communication module are all connected with described main control module.
2. according to claim 1 a kind of for refrigerator electric control plate detect hand-held checkout equipment, it is characterized in that, described main control module comprises main control chip, resistance R10, electric capacity C8, resistance R17, resistance R18, electrochemical capacitor CE4, electric capacity C13 and electrochemical capacitor CE5, 5th pin of described main control chip connects the first power supply by resistance R10, by electric capacity C8 ground connection, 8th pin is by resistance R17 ground connection, parallel resistance R18 between 9th pin and the 10th pin, the two ends of described resistance R18 are connected with the input of crystal oscillator X1 respectively, the output head grounding of described crystal oscillator X1, 11st pin is by electrochemical capacitor CE4 ground connection, 12nd pin ground connection, 13rd pin connects the first power supply, and by electric capacity C13 in parallel and electrochemical capacitor CE5 ground connection.
3. according to claim 2 a kind of for refrigerator electric control plate detect hand-held checkout equipment, it is characterized in that, described hand-held checkout equipment is connected with refrigerator electric control plate by communication wire harness, and the TXD of described main control chip holds to hold with the RXD of refrigerator electric control plate and is connected, the RXD of main control chip holds to hold with the TXD of refrigerator electric control plate and is connected.
4. a kind of hand-held checkout equipment detected for refrigerator electric control plate according to claim 3, it is characterized in that, described communication wire harness adopts two-wire communication or single-wire communication.
5. according to claim 2 a kind of for refrigerator electric control plate detect hand-held checkout equipment, it is characterized in that, described mode control module adopts key control circuit, described key control circuit comprises control button SW1, resistance R1, resistance R2 and electric capacity C1, described control button one end ground connection, the other end connects the first power supply by resistance R1, is connected the SW-1 pin of main control chip by resistance R2 simultaneously, and described resistance R2 connects one end of Master control chip by electric capacity C1 ground connection.
6. according to claim 2 a kind of for refrigerator electric control plate detect hand-held checkout equipment, it is characterized in that, described communication module comprises communication terminal, resistance R60, resistance R61, antistatic diode DD1, antistatic diode DD2, resistance R15, resistance R25, resistance R26 and electric capacity C7, described communication terminal is used for being connected with refrigerator electric control plate, 1st pin of described communication terminal is connected the TXD pin of main control chip with resistance R25 by resistance R60, simultaneously by termination first power supply of antistatic diode DD1, by the other end ground connection of antistatic diode DD1, 2nd pin is connected the RXD pin of main control chip by resistance R60 with resistance R26, termination first power supply of antistatic diode DD2 is passed through in one end of resistance R61 contact resistance R26, by the other end ground connection of antistatic diode DD2, connect the first power supply by resistance R15 simultaneously, resistance R26 connects one end of main control chip RXD pin by electric capacity C7 ground connection, 3rd pin ground connection, 4th pin connects second source.
7. a kind of hand-held checkout equipment detected for refrigerator electric control plate according to claim 6, it is characterized in that, described first power acquisition 5V power supply, described second source adopts 12V power supply.
8. according to claim 2 a kind of for refrigerator electric control plate detect hand-held checkout equipment, it is characterized in that, described display module comprises drive circuit and display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490961.5U CN204902435U (en) | 2015-07-07 | 2015-07-07 | A handheld check out test set that is used for automatically controlled board of refrigerator to detect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490961.5U CN204902435U (en) | 2015-07-07 | 2015-07-07 | A handheld check out test set that is used for automatically controlled board of refrigerator to detect |
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| Publication Number | Publication Date |
|---|---|
| CN204902435U true CN204902435U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520490961.5U Expired - Fee Related CN204902435U (en) | 2015-07-07 | 2015-07-07 | A handheld check out test set that is used for automatically controlled board of refrigerator to detect |
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| Country | Link |
|---|---|
| CN (1) | CN204902435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425372A (en) * | 2017-08-31 | 2019-03-05 | 德州仪器公司 | It is gathered using capacitance sensing frost and ice |
-
2015
- 2015-07-07 CN CN201520490961.5U patent/CN204902435U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425372A (en) * | 2017-08-31 | 2019-03-05 | 德州仪器公司 | It is gathered using capacitance sensing frost and ice |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210707 |