CN203949982U - Frost removal timer pick-up unit - Google Patents
Frost removal timer pick-up unit Download PDFInfo
- Publication number
- CN203949982U CN203949982U CN201420333804.9U CN201420333804U CN203949982U CN 203949982 U CN203949982 U CN 203949982U CN 201420333804 U CN201420333804 U CN 201420333804U CN 203949982 U CN203949982 U CN 203949982U
- Authority
- CN
- China
- Prior art keywords
- chip
- frost removal
- test
- removal timer
- main control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to frost removal timer technical field, discloses a kind of frost removal timer pick-up unit.It comprises host computer and test board, after test board is connected with 485 buses, forms test group, and test group is carried out data interaction by 485 hubs and host computer; Test board comprises the load module for gathering frost removal timer time data, for receiving and process the main control module (300) of time data that load module passes, be uploaded to the communication module (400) of host computer by 485 buses for data after main control module (300) is processed, and be the supply module of load module, main control module (300) and communication module (400) power supply.The utility model can support many frost removal timers to test simultaneously, has realized mass, the automatic test of frost removal timer.
Description
Technical field
The utility model relates to frost removal timer technical field, specifically, relates to a kind of frost removal timer pick-up unit.
Background technology
Some refrigeration plants such as air-conditioning, refrigerator are after refrigeration work after a while, the surface of its refrigerator one deck frost that all can condense, this will have a strong impact on the refrigerating efficiency of refrigeration plant, therefore be mostly provided with defrost part on these refrigeration plants, i.e. defrost circuit including frost removal timer.The principle of work of defrost part is: after last time defrost finishes, the orange line in frost removal timer contact grey lines and contact is connected, and timer and compressor, fan turn round simultaneously.Frost removal timer is connected with defrosting heater, but because frost removal timer internal resistance is larger, defrosting heater internal resistance is less, and therefore voltage major part is added on frost removal timer, and defrosting heater heating is very little.When frost removal timer and the compressor accumulative total that turns round reaches while setting timing simultaneously, the orange line in the contact grey lines of timer and contact is connected.Defrosting heater is directly through insurance and defrost switch energising defrost, and now defrost motor is by the short circuit of defrost temp control switch.Frost removal timer stall.After long-pending frostization is complete, when the evaporator surface temperature rise to 10～16 DEG C, defrost temperature detect switch (TDS) contact disconnection defrost circuit, while frost removal timer entry into service.The approximately 5 minutes back contact grey lines that turn round are connected with the orange line in contact again, complete automatic defrosting process one time.Compressor, fan be entry into service refrigeration again.Then,, in the time that evaporator temperature is down to defrosting temperature detect switch (TDS) reset temperature, temperature detect switch (TDS) closed communicating defrosting heater, for defrost is next time got ready.
Can the quality of frost removal timer quality directly have influence on defrost part and normally work, and each frost removal timer needs through strict test before dispatching from the factory, to guarantee that quality reaches a standard.Frost removal timer is due to the singularity of product, a work period often needs more than 5 hours, so the test for this product will spend a large amount of time and manpower, at present also rest on manual testing's stage for the test of frost removal timer, and traditional manual testing not only work efficiency is low, but also can not ensure the accuracy of measurement data.
Summary of the invention
Not only work efficiency is low for the test of frost removal timer in prior art for the utility model, but also can not ensure the problem of the accuracy of measurement data, and a kind of communicating circuit for frost removal timer detection system is provided.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Frost removal timer pick-up unit, it comprises host computer and test board, after test board is connected with 485 buses, forms test group, test group is carried out data interaction by 485 hubs and host computer; Test board is used for measuring frost removal timer timing and defrost time, and test board shows at host computer after the time data of mensuration is uploaded to host computer; Test board comprises the load module for gathering frost removal timer time data, for receiving and process the main control module of time data that load module passes, communication module for data upload after main control module is processed to host computer, and be the supply module of load module, main control module and communication module power supply.
As preferably, above-mentioned test group can have M group, and arbitrary group in described M group test group is equipped with 485 separate buses of a road, any in described 485 separate buses all can be connected with N test board on the way, wherein, 1≤M≤4,1≤N≤500.
The utility model adopts test board to gather timing and the defrost time of frost removal timer to be measured, realize the automatic test of frost removal timer, test board can also be uploaded to host computer by the time data collecting, host computer can be to the data analysis collecting, the utility model can continuous running and without artificial nurse, has realized the batch of frost removal timer, efficiently test.
In a preferred embodiment of the present utility model, comprise 4 test groups, each test group comprise 500 with the mutual test board of same road 485 buses, 4 tunnel 485 buses of 4 test groups synthesize 1 road by 485 hubs and are connected to host computer, have realized the data interaction of host computer and 2000 test boards; Thereby realized the robotization of frost removal timer, the test of mass, greatly saved human cost, and the test of robotization can also improve the precision of test greatly; In addition, 4 test groups can non-stop run in 24 hours, has improved greatly the efficiency of frost removal timer test.
As preferably, main control module can also adopt STM8S003F3P6 chip.STM8S003F3P6 chip price is cheap, and stable performance has also ensured stability of the present utility model in reducing the utility model manufacturing cost.
As preferably, load module can also comprise two identical testing circuits, is respectively defrost testing circuit and timely checking circuit; Defrost testing circuit is connected alternating voltage at frost removal timer during in defrost state, and to main control module output pulse signal; Timely checking circuit is connected alternating voltage at frost removal timer during in definition status, and to main control module output pulse signal.
As preferably, defrost testing circuit can also comprise NEC2501 chip, and its pin 1 and pin 2 are configured to connect alternating voltage at frost removal timer during in defrost state, and its pin 4 accesses VCC, and its pin 3 accesses the pin 20 of main control module; Timely checking circuit can also comprise NEC2501 chip, and its pin 1 and pin 2 are configured to connect alternating voltage at frost removal timer during in definition status, and its pin 4 accesses VCC, and its pin 3 accesses the pin 19 of main control module.
In a preferred embodiment of the present utility model, main control module adopts STM8S003F3P6 chip, load module comprises the defrost testing circuit being become by NEC2501 chip structure and the timely checking circuit being become by NEC2501 chip structure, the pin 1 of 2 NEC2501 chips in defrost testing circuit and timely checking circuit and pin 2 respectively by frost removal timer repeat circuit a pair of often open, the alternating current of normally closed contact access 220V; Frost removal timer is in the time of defrost state, and the NEC2501 chip in defrost testing circuit is connected the alternating current of 220V and sent the pulse signal of 50Hz to main control module; Frost removal timer is in the time of definition status, and the NEC2501 chip in timely checking circuit is connected the alternating current of 220V and sent the pulse signal of 50Hz to main control module; Owing to adopting the civil power power frequency component of 50Hz as clock reference, ensure the stability of reference clock and reduced cost; In addition, construct by sort circuit, can record accurately timing and the defrost time of surveyed frost removal timer, because in the time that frost removal timer generation state is changed, defrost testing circuit or timely checking circuit can lose power frequency time reference, stop timing, have ensured the accuracy of data.
As preferably, the signal that communication module can transmit main control module is converted to 485 signals, and is uploaded to host computer by 485 buses.
As preferably, communication module can also comprise MAX485ESA chip and CD4053BCSJ chip, the serial signal that MAX485ESA chip can transmit main control module is converted to 485 signals, and CD4053BCSJ chip can be selected whether 485 signals after the conversion of MAX485ESA chip to be uploaded to 485 buses.
As preferably, on the pin 4 of CD4053BCSJ chip, can also be connected to communication pilot lamp by MMBT3906 transistor.
In a preferred embodiment of the present utility model, main control module has adopted STM8S003F3P6 chip, communication module has adopted MAX485ESA chip, MAX485ESA chip is 485 level transferring chip, the rs 232 serial interface signal of STM8S003F3P6 chip can be converted to antijamming capability is stronger, 485 farther signals of propagation distance; In bus, can not cause Communications failure in order to ensure that multiple 485 nodes hang over, on MAX485ESA chip, be also connected to CD4053BCSJ analog switch chip, by STM8S003F3P6 chip controls CD4053BCSJ chip, can realize automatic selection and whether 485 signals after the conversion of MAX485ESA chip be uploaded in bus, and whether disconnect and being connected of 485 buses.
Communication module of the present utility model can adopt MAX485ESA chip, due to the advantage of MAX485ESA chip in cost and stability, has ensured the stability of communication module and has reduced production cost.Because the maximum carry number of MAX485ESA chip is 32 nodes (in the utility model, said node all represents that test board accesses the access point of 485 buses), in order to realize the multinode communication of road 485 buses, on MAX485ESA chip, can also access CD4053BCSJ chip as analog switch, when communication module is during in idle condition, main control module can cut off being connected of communication module and 485 buses by controlling CD4053BCSJ chip, in the time that communication module need to be to 485 bus uploading data, main control module can be connected automatically by controlling CD4053BCSJ chip the communication that has been connected of communication module and 485 buses.By this kind of circuit structure, 485 buses and multiple internodal stable communication are ensured.On MAX485ESA chip of the present utility model, can also be connected to one and can connect, cut off the hand switch being connected between communication module and 485 buses, when CD4053BCSJ chip breaks down cannot normally work time, can realize turning on and off between communication module and 485 buses by described hand switch.
On communication module of the present utility model, can also be provided with communication pilot lamp, communication pilot lamp can be by the pin 4 of MMBT3906 transistor access CD4053BCSJ chip, in the time there is data communication between communication module and 485 buses, communication pilot lamp lights, indicate simply and easily the duty of communication module, avoided the maloperation because not knowing that duty causes.
As preferably, on main control module, can also be connected to wrong pilot lamp, qualified pilot lamp, defrost status indicator lamp and definition status pilot lamp; The pin 12 of mistake pilot lamp one end access VCC one end access main control module, the pin 13 of qualified pilot lamp and one end access VCC one end access main control module, the pin 14 of defrost status indicator lamp one end access VCC one end access main control module, the pin 11 of definition status pilot lamp one end access VCC one end access main control module.
The utility model is in the time testing frost removal timer, if the test of the frost removal timer of surveying is obstructed out-of-date, mistake pilot lamp lights, if when the test of the frost removal timer of surveying is passed through, qualified pilot lamp lights, mistake pilot lamp and qualified pilot lamp can also adopt the lamp of different glow colors, thereby make tester can know intuitively, easily that whether surveyed frost removal timer is qualified.When surveyed frost removal timer during in defrost state defrost status indicator lamp light, when surveyed frost removal timer during in definition status definition status pilot lamp light, defrost status indicator lamp and definition status pilot lamp can also adopt the pilot lamp of different colours, thereby make tester can know in real time the duty of surveyed frost removal timer.
As preferably, supply module can also comprise DC power-supply circuit, and it is the VCC of 5V that DC power-supply circuit provides voltage; The input end access 5V direct supply of DC power-supply circuit, input end is by stabilivolt output VCC in parallel with it, and the two ends of stabilivolt are also parallel with respectively filter capacitor and decoupling capacitor; DC power-supply circuit is provided with DC power supply switch and the fusing resistor of controlling break-make.Under the effect of stabilivolt, filter capacitor and decoupling capacitor, the output terminal of DC power-supply circuit can be exported the 5V direct current VCC of high-quality more, has ensured the stable power-supplying to test board.In DC power-supply circuit, can also be provided with DC power supply switch and fusing resistor; DC power supply switch makes tester can manually disconnect or connect DC power-supply circuit; thereby fusing resistor can fuse and disconnect VCC under DC power-supply circuit overload or short-circuit conditions, and the modules in test board is had to protective effect.
The utility model adopts separately power supply of high and low pressure, test board of the present utility model adopts the DC power supply of 5V, the input end of frost removal timer and load module adopts the ac power supply of 220V or 110V, and this has ensured the security of test board in the utility model greatly.The VCC end of DC power-supply circuit of the present utility model can also be provided with power light, and in the time that DC power-supply circuit is connected, power light lights, otherwise extinguishes.Make tester can know intuitively that test board is all to power on.
As preferably, on main control module, can also be provided with the selection of times circuit that same frost removal timer is carried out to testing time selection, selection of times circuit can also comprise 2pin toggle switch, and 2pin toggle switch is for controlling respectively the switching state between main control module pin 17 and main control module pin 15 and between main control module pin 17 and main control module pin 16.
Test data in order to ensure surveyed frost removal timer has credibility, on main control module of the present utility model, be also provided with a selection of times circuit, number of pass times selects circuit test person can manually select the testing time to same frost removal timer, thereby has ensured accuracy and the ubiquity of test data.Selection of times circuit of the present utility model can also comprise a 2pin toggle switch, can set testing time by the state that 2pin toggle switch is set.In a preferred embodiment of the present utility model, main control module has adopted STM8S003F3P6 chip, control respectively the switching state between main control module pin 17 and main control module pin 15 and between main control module pin 17 and main control module pin 16 by a 2pin toggle switch, by set the state of 2pin toggle switch be 00,01,10,11 can corresponding selected test group number be 3,4,5,6.
Brief description of the drawings
Fig. 1 is the structured flowchart of frost removal timer pick-up unit in embodiment 1;
Fig. 2 is the structured flowchart of test board in embodiment 1;
Fig. 3 is the circuit diagram of main control module in embodiment 1;
Fig. 4 is the circuit diagram of communication module in embodiment 1;
Fig. 5 is the circuit diagram of DC power-supply circuit in embodiment 1;
Fig. 6 is the circuit diagram of defrost testing circuit in embodiment 1;
Fig. 7 is the circuit diagram of timely checking circuit in embodiment 1;
Fig. 8 is the circuit diagram of wrong pilot lamp in embodiment 1, power light, qualified pilot lamp, defrost status indicator lamp and definition status pilot lamp;
Fig. 9 is the circuit diagram of selection of times circuit in embodiment 1;
Figure 10 is the circuit diagram of debug circuit in embodiment 1;
Figure 11 is the structural representation of 40pin chip locking bed in embodiment 1;
Figure 12 is the workflow diagram of host computer in embodiment 1;
Figure 13 is the workflow diagram of test board in embodiment 1.
The toponym that in accompanying drawing, each number designation refers to is as follows: 300-main control module, 400-communication module, 500-DC power-supply circuit, 600-defrost testing circuit, 700-timely checking circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, for a kind of frost removal timer pick-up unit of the present embodiment, it comprises 4 identical test groups, in each test group, be equipped with 500 test boards, 500 test boards of each test group are connected with same road 485 buses, and 4 tunnel 485 buses of 4 test groups synthesize 1 road by 485 hubs and are connected to host computer.
As shown in Figure 2, in the present embodiment, test board comprises the load module for gathering frost removal timer time data, for receiving and process the main control module 300 of time data that load module passes, for main control module 300 is processed to the communication module 400 of rear data upload to host computer, and it is the supply module that load module, main control module 300 and communication module 400 are powered.
As shown in Figure 3, the main control module 300 of the present embodiment adopts STM8S003F3P6 chip, and pin 2 and the pin 3 of STM8S003F3P6 chip access VCC, and the pin 8 of STM8S003F3P6 chip and pin 9 are respectively by ground connection after an electric capacity.
As shown in Figure 4, in this enforcement, the serial signal that communication module 400 transmits main control module 300 is converted to 485 signals, and is uploaded to host computer by 485 buses.Communication module 400 comprises MAX485ESA chip U2 and CD4053BCSJ chip U6, the serial signal that MAX485ESA chip can transmit STM8S003F3P6 chip is converted to 485 signals, and CD4053BCSJ chip U6 can select whether 485 signals after MAX485ESA chip U2 conversion to be uploaded to 485 buses.
Wherein, for MAX485ESA chip U2, its pin 8 accesses VCC, its pin 5 ground connection, its pin 2 is connected with the pin 1 of STM8S003F3P6 chip with pin 3 simultaneously, and its pin 1 is connected with the pin 3 of STM8S003F3P6 chip, and its pin 4 is connected with the pin 2 of STM8S003F3P6 chip, its pin 6 is connected with the pin 14 of CD4053BCSJ chip U6, and its pin 7 is connected with the pin 15 of CD4053BCSJ chip U6.For CD4053BCSJ chip U6, its pin 5 and 16 access VCC, its pin 3,6,7 and 8 ground connection simultaneously, its pin 9,10 and 11 connects the pin 10 of STM8S003F3P6 chip simultaneously, the pin 10 of STM8S003F3P6 chip is also by resistance R 11 ground connection, and its pin 1 and 13 accesses 485 buses (the 485BUS in figure represents 485 buses).What the pin 6 and 7 of MAX485ESA chip U2 was exported is 485 signals, can control whether 485 signals of MAX485ESA chip U2 conversion are sent to 485 buses by analog switch chip CD4053BCSJ chip U6, in the present embodiment, between pin 6 and 7 and 485 buses of MAX485ESA chip U2, can also open or turn-off by a hand switch control, when CD4053BCSJ chip U6 breaks down cannot normally work time, can realize turning on and off between MAX485ESA chip U2 and 485 buses by described hand switch.On the CD4053BCSJ chip U6 of the present embodiment, be also connected to communication pilot lamp D4, on the pin 4 of communication pilot lamp D4 by MMBT3906 transistor access CD4053BCSJ chip, in the time there is data communication between communication module and 485 buses, communication pilot lamp lights, indicate simply and easily the duty of communication module, avoided the maloperation because not knowing that duty causes.
As shown in Figure 5, in this enforcement, supply module comprises DC power-supply circuit 500, and it is the VCC of 5V that DC power-supply circuit 500 provides voltage; Input end (5V_POWER_IN) the access 5V direct supply of DC power-supply circuit 500, input end (5V_POWER_IN) is by stabilivolt (D5) output VCC in parallel with it, and the two ends of stabilivolt (D5) are also parallel with respectively filter capacitor (C7) and decoupling capacitor (C9); DC power-supply circuit 500 is provided with DC power supply switch (S4) and the fusing resistor (F1) of controlling break-make.DC power-supply circuit 500 can provide for all chips in the present embodiment the VCC of high-quality.
As shown in Figure 6, Figure 7, load module comprises two identical testing circuits, is respectively defrost testing circuit (600) and timely checking circuit 700; Defrost testing circuit 600 is connected alternating voltage at frost removal timer during in defrost state, and to main control module (300) output pulse signal; Timely checking circuit 700 is connected alternating voltage at frost removal timer during in definition status, and to main control module 300 output pulse signals.Defrost testing circuit 600 comprises a NEC2501 chip U3, and its pin 1 and pin 2 are configured to connect alternating voltage at frost removal timer during in defrost state, and its pin 4 accesses VCC, and its pin 3 accesses the pin 20 of STM8S003F3P6 chip; Timely checking circuit 700 comprises another NEC2501 chip U4, and its pin 1 and pin 2 are configured to connect alternating voltage at frost removal timer during in definition status, and its pin 4 accesses VCC, and its pin 3 accesses the pin 19 of main control module 300.
As shown in Figure 8, in the present embodiment, on the pin 11 of STM8S003F3P6 chip, be connected to definition status pilot lamp (D22), on the pin 12 of STM8S003F3P6 chip, be connected to red wrong pilot lamp (D1), on the pin 13 of STM8S003F3P6 chip, connect viridescent qualified pilot lamp (D6), on the pin 14 of STM8S003F3P6 chip, be connected to defrost status indicator lamp (D21).
As shown in Figure 9, on the STM8S003F3P6 chip of the present embodiment, be also connected with the selection of times circuit (900) of selecting for same frost removal timer being carried out to testing time, selection of times circuit (900) comprises 2pin toggle switch (S3), and 2pin toggle switch (S3) is for controlling respectively the switching state between STM8S003F3P6 chip pin 17 and STM8S003F3P6 chip pin 15 and between STM8S003F3P6 chip pin 17 and STM8S003F3P6 chip pin 16.In the present embodiment, the state that 2pin toggle switch (S3) is set is to represent same frost removal timer to test at 00 o'clock 3 times, the state that 2pin toggle switch (S3) is set is to represent same frost removal timer to test at 01 o'clock 4 times, the state that 2pin toggle switch (S3) is set is to represent same frost removal timer to test at 10 o'clock 5 times, and the state that 2pin toggle switch (S3) is set is to represent same frost removal timer to test at 11 o'clock 6 times.
As shown in figure 10, in the present embodiment, on STM8S003F3P6 chip, be also connected to debug circuit, debug circuit comprises a 4pin debugging interface P1, the pin 1 of 4pin debugging interface P1 accesses VCC, pin 4 ground connection, and pin 2 is connected with the pin 18 of STM8S003F3P6 chip, pin 3 is connected with the pin 4 of STM8S003F3P6 chip, can carry out in-circuit emulation to the utility model by debugging interface P1.
The pin 4 of STM8S003F3P6 chip accesses VCC by the resistance R 3 of a 10K, and the pin 4 of STM8S003F3P6 chip is also by a capacity earth, the two ends of this electric capacity in parallel one for the utility model being carried out to the pushbutton switch S2 of reset operation.
As shown in figure 11, in the present embodiment, defrost testing circuit 600 and timely checking circuit 700 by 40pin chip locking bed respectively corresponding access 220V alternating current and frost removal timer a pair of often open, in normally closed contact, in the present embodiment, adopt chip locking bed can use many group interfaces, if it is bad that one of them interface is inserted, can change another one and continue to use, can not affect test.
In the present embodiment, 2000 test boards are all connected on the node of 485 buses, detect that at test board frost removal timer work completes after setting circulation group number, upload the data to host computer analysis by automatic or manual mode, under host computer, send instructions subsequently to slave computer test board, by controlling the State-output product test result of pilot lamp and result being saved in to database.
As shown in figure 12, first host computer carries out parameter configuration after starting, and sets after the parameter of frost removal timer to be measured batch detection, reads the test data in 485 buses.After host computer can contrast the parameter of the data of testing board and setting, test board is sent to the instruction whether surveyed frost removal timer is qualified, the corresponding duty of controlling each pilot lamp simultaneously, host computer all deposits all data that receive in database, in order to back up, to consult.
As shown in figure 13, when frost removal timer access test board to be measured, this test board can be tested it according to the test group number of setting, and test data is uploaded to host computer, host computer is according to test data, thereby outputs test result by the state of controlling each pilot lamp with reference to setup parameter.
Frost removal timer pick-up unit in the present embodiment comprises the test board of 2000, can be reliable and stable realize 2000 test boards time measure, and the whole system of the present embodiment can realize uninterrupted test in 24 hours, greatly improved testing efficiency.
Embodiment 2
With embodiment 1, difference is that the present embodiment has 3 test groups, is equipped with 300 test boards in each test group.
Embodiment 3
With embodiment 1, difference is that the present embodiment has 2 test groups, is equipped with 250 test boards in each test group.
Embodiment 4
With embodiment 1, difference is that the host computer of the present embodiment only carries out data interaction with 1 test board by 485 buses.
Embodiment 5
With embodiment 1, difference is that in 4 test groups of the present embodiment, the quantity of test board is respectively 200,300,400 and 450.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (6)
1. frost removal timer pick-up unit, is characterized in that: comprise host computer and test board, after test board is connected with 485 buses, form test group, test group is carried out data interaction by 485 hubs and host computer; Test board comprises the load module for gathering frost removal timer time data, for receiving and process the main control module (300) of time data that load module passes, be uploaded to the communication module (400) of host computer by 485 buses for data after main control module (300) is processed, and be the supply module of load module, main control module (300) and communication module (400) power supply.
2. frost removal timer pick-up unit according to claim 1, it is characterized in that: the total M group of described test group, arbitrary group in described M group test group is equipped with 485 separate buses of a road, any in described 485 separate buses is all connected with N test board on the way, wherein, 1≤M≤4,1≤N≤500.
3. frost removal timer pick-up unit according to claim 1 and 2, is characterized in that: main control module (300) adopts STM8S003F3P6 chip.
4. frost removal timer pick-up unit according to claim 3, is characterized in that: load module comprises NEC2501 chip.
5. frost removal timer pick-up unit according to claim 4, is characterized in that: communication module (400) comprises MAX485ESA chip and CD4053BCSJ chip.
6. frost removal timer pick-up unit according to claim 5, is characterized in that: supply module is included as STM8S003F3P6 chip, NEC2501 chip, MAX485ESA chip and CD4053BCSJ chip provides the DC power-supply circuit (500) of VCC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333804.9U CN203949982U (en) | 2014-06-20 | 2014-06-20 | Frost removal timer pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333804.9U CN203949982U (en) | 2014-06-20 | 2014-06-20 | Frost removal timer pick-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203949982U true CN203949982U (en) | 2014-11-19 |
Family
ID=51892010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420333804.9U Expired - Fee Related CN203949982U (en) | 2014-06-20 | 2014-06-20 | Frost removal timer pick-up unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203949982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798898A (en) * | 2021-03-29 | 2021-05-14 | 广东敏卓机电股份有限公司 | Full-automatic detection equipment and detection method for microwave oven timer |
-
2014
- 2014-06-20 CN CN201420333804.9U patent/CN203949982U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798898A (en) * | 2021-03-29 | 2021-05-14 | 广东敏卓机电股份有限公司 | Full-automatic detection equipment and detection method for microwave oven timer |
| CN112798898B (en) * | 2021-03-29 | 2021-07-09 | 广东敏卓机电股份有限公司 | Full-automatic detection method for microwave oven timer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103019234B (en) | Battery management and acquisition subsystem of new energy vehicle and method for controlling battery management and acquisition subsystem | |
| CN100568146C (en) | Air conditioner strong power controller automatic test device and method of testing | |
| CN204086505U (en) | A kind of LED lamp intelligence aging testing system | |
| CN202583431U (en) | Power supply aging rack and power supply aging system thereof | |
| CN103929844A (en) | Automatic control device for lamp cyclic test | |
| CN102735365A (en) | Ambient temperature detection device and fault judgment method thereof | |
| CN104965147A (en) | Low-voltage-user electric energy meter series detection system and detection method | |
| CN205280797U (en) | Automatic switch circuit and electric signal testing case of range | |
| CN203849346U (en) | Aging test apparatus | |
| CN106707143A (en) | Chip internal logic verify system and method | |
| CN109283424B (en) | Testing device and method for four-port sensor signal deconcentrator with LED | |
| CN104951421A (en) | Automatic numbering and type recognition method and device for serial bus communication devices | |
| CN203949982U (en) | Frost removal timer pick-up unit | |
| CN103852733A (en) | LED power supply performance analysis device and method | |
| CN203949983U (en) | Communicating circuit for frost removal timer detection system | |
| CN109507602A (en) | Voltage sampling circuit for battery and method, system | |
| CN104076216A (en) | Detection system of defrosting timer | |
| CN115079676B (en) | Dual control board (FCT) system and testing method thereof | |
| CN209525427U (en) | Relay test platform composite control apparatus | |
| CN2916644Y (en) | Intelligent nuclear phase instrument | |
| CN209282934U (en) | New type family power consumption control system based on FPGA+Arduino | |
| CN204374671U (en) | A kind of output switch parameter Wet-dry relay terminal plate | |
| CN209911788U (en) | Controller circuit | |
| CN208299461U (en) | Working power circuit | |
| CN104991186A (en) | Automobile switch on/off function automatic identification system and identification method |
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: 20141119 Termination date: 20190620 |