CN202758045U - Apparatus used for detecting drive circuit of electromagnetic induction - Google Patents
Apparatus used for detecting drive circuit of electromagnetic induction Download PDFInfo
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- CN202758045U CN202758045U CN 201220429353 CN201220429353U CN202758045U CN 202758045 U CN202758045 U CN 202758045U CN 201220429353 CN201220429353 CN 201220429353 CN 201220429353 U CN201220429353 U CN 201220429353U CN 202758045 U CN202758045 U CN 202758045U
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- electromagnetic induction
- driving circuit
- expansion valve
- induction device
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Abstract
The utility model discloses an apparatus used for detecting a drive circuit of electromagnetic induction. The apparatus is characterized in that a driving waveform output from a drive circuit to an electromagnetic induction device on a control panel of a machine to be measured is collected, a theory motion position of the electromagnetic induction device can be calculated according to the driving waveform, the calculated theory motion position and the set position input on the control panel of the machine to be measured are compared, if the result is consistent, the drive circuit is normal, otherwise, the drive circuit is in fault. The detection method and the detection apparatus are especially suitable for detecting the performance of the drive circuit of the electromagnetic induction devices such as an electronic expansion valve and a stepping motor, the electronic expansion valve opening degree and the real time display of the stepping motor motion position can be realized, the accurate detection of abnormal drive circuit can be completed, and the apparatus can be taken as a test platform tool of control software, the driving control of the fixed point opening degree can be rapidly set, and the verify of the software functionality of the control software can be completed.
Description
Technical field
The utility model belongs to the electronic circuit technical field of measurement and test, specifically, relates to a kind of device that detects for the driving circuit to type electromagnetic induction devices such as electric expansion valve or stepper motors.
Background technology
In present air-conditioning products, electric expansion valve and stepper motor are indispensable important composition parts in the air-conditioning system.In the process that air-conditioning products is produced and tested, need to detect the various functional circuits on the air conditioning circuit board and the performance of topworks.But, for the detection of electric expansion valve in the air-conditioning products and stepper motor, also lack at present a kind of detection means directly perceived, effective.Describe as an example of electric expansion valve example, electric expansion valve is being driven in the process of control, how many current apertures of electric expansion valve is on earth, can't be embodied intuitively.If there is problem, actually the problem of electric expansion valve self Hai Shi be used for the problem of the driving circuit of control electronic expansion valve events, can't be known, this just brings very large puzzlement to solution of problem.
Meanwhile, in new product development and debug phase, the aperture that system personnel need to be regulated electric expansion valve is tested some parameters and is known the real situation, owing to lack special accent valve instrument, this brings inconvenience also for the exploitation of system.And, for the Software for Design personnel, after writing the control software of electric expansion valve, also lack suitable test platform the control software that writes is carried out second test.
The utility model content
The purpose of this utility model is to provide a kind of device that detects for the driving circuit to the electromagnetic induction device, can carry out fast detecting to the unusual condition of the driving circuit that is used for driving the action of electromagnetic induction device, and then realize the accurate location of fault.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of device that detects for the driving circuit to the electromagnetic induction device comprises main control unit, converting interface and display unit; Described converting interface is used for connecting machine control panel to be measured, receives driving circuit to the driving signal of electromagnetic induction device output, and transfers to described main control unit; Described main control unit calculates the theoretical operating position of electromagnetic induction device according to the drive signal waveform that receives, and then exports described display unit to and show.
Further, described electromagnetic induction device is electric expansion valve or stepper motor.
Preferably, described main control unit is laid on the check-out console, and described converting interface is laid on the card extender, and on the display board that described display unit is laid in, three circuit boards connect by inter-board interface is corresponding.
Further again, in described converting interface, comprise two interfaces that are respectively applied to the corresponding connection of connection terminal of the output interface of driving circuit and electric expansion valve or stepper motor, each pin in two interfaces is one by one after corresponding the connection, again with card extender on inter-board interface in the one by one corresponding connection of corresponding each pin.
In order to improve detection efficiency, be provided with 2N road converting interface at described card extender, wherein N road converting interface is used for connecting N platform electric expansion valve and driving circuit thereof, forms the expansion valve converting interface; N road converting interface is used for connecting N platform stepper motor and driving circuit thereof in addition, forms the motor converting interface; N road expansion valve converting interface and N road motor converting interface are one by one after the corresponding parallel connection, and be corresponding in parallel with the N road inter-board interface on the card extender again.Thus can be simultaneously the driving circuit of N road electric expansion valve or stepper motor be detected, to accelerate the detection speed of machine control panel to be measured.
In order to make described pick-up unit with the function that drives the action of electric expansion valve or stepper motor, electric expansion valve or stepper motor are carried out the exploitation debugging of regulation and control software to make things convenient for system personnel carrying out new product development and debug phase, on described card extender, also be provided with two-way and drive interface, be respectively applied to the connection terminal of connecting electronic expansion valve and the connection terminal of stepper motor, described two-way drives interface and is in parallel, and be in parallel with independent one road inter-board interface on the card extender, receive the driving signal that check-out console sends and also export electric expansion valve to or stepper motor.
Further, described driving signal is set of pulses signal; On described check-out console, also be provided with the multi-path light electric coupler, after each the road pulse signal that receives by the inter-board interface on the check-out console carries out the photoelectricity isolation processing via No. one photoelectrical coupler separately, transfer to again described main control unit.
Further, on described device, also be provided with key circuit, gather key command and transfer to described main control unit and carry out the instruction parsing, with response user operation.
Further, in described device, also be provided with transformer, A.C. contactor, toggle switch and earth leakage protective device; Be transferred to the normally opened contact of A.C. contactor via earth leakage protective device by the AC power of attaching plug access, and when described normally opened contact is closed, transfer to transformer and carry out decompression transformation, AC power by transformer output generates dc supply via rectification, filtering, mu balanced circuit, is the direct current electricity consumption load supplying in the device; Described toggle switch is connected between the coil of AC power cord and described A.C. contactor, and described device is carried out on off control.
Preferably, on described device, also be provided with software debugging interface and computer interface, connect described main control unit by interface circuit, with convenient commissioning device and the computing machine of connecting, so to the system software in the device carry out updating operation or the electric expansion valve that system personnel is write, step motor control software carries out secondary development, checking.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is for electric expansion valve, the special driving circuit pick-up unit of this class electromagnetic induction device design of stepper motor, no matter produce or problem that testing laboratory occurs for solving, realize the aperture control of electric expansion valve or stepper motor, still control exploitation, the checking of software, all be very important.By developing this pick-up unit, not only can realize the aperture of electric expansion valve and the real-time demonstration of stepper motor operating position, to finish the accurate detection of driving circuit abnormality situation, can also be as the test platform frock of control software, the driving control of quick-setting fixed point aperture is to finish the functional checking to control software.
After reading by reference to the accompanying drawings the detailed description of the utility model embodiment, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
The overall architecture synoptic diagram of a kind of embodiment of Fig. 1 device that to be the utility model being used for of proposing detect the driving circuit of electromagnetic induction device;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of part functional circuit on the check-out console among Fig. 1;
Fig. 3 is based on pick-up unit shown in Figure 1 and the overhaul flow chart of a kind of embodiment of a kind of driving circuit detection method of proposing.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Present embodiment is for to electric expansion valve, the driving circuit of this class electromagnetic induction device of stepper motor is realized Performance Detection, at first designed a cover pick-up unit, it is the test platform frock, machine control panel to be measured is connected on the described pick-up unit, by controlling electronic expansion valve-driving circuit or the stepper motor driving circuit operation on the machine control panel to be measured, and collection is by the drive waveforms of driving circuit output, and then calculate the theoretical operating position of electromagnetic induction device according to drive waveforms, whether just can judge driving circuit to be detected according to the theoretical operating position that calculates thus normal.That is, when the theoretical operating position that calculates is consistent with the desired location on formerly being input to machine control panel to be measured, can judge that then driving circuit is normal; If inconsistent, then can judge described driving circuit fault.
The below at first is described in detail the concrete assembling structure of described pick-up unit.
In the pick-up unit of present embodiment, mainly comprise the ingredients such as main control unit, converting interface and display unit.Wherein, described converting interface is used for being connected with machine control panel to be measured, receives the driving signal of driving circuit output on the control panel, and transfers to described main control unit.Described main control unit is as the core component of whole pick-up unit, according to the drive signal waveform that receives, calculate the theoretical operating position that generates the electromagnetic induction device, such as the theoretical aperture of electric expansion valve or the theoretical position of stepper motor etc., and then the driving display unit shows this theory aperture or theoretical position.Theoretical aperture or theoretical position that system personnel shows by observing display unit, see its whether with oneself formerly be input to machine control panel to be measured on setting value consistent, by comparing, whether the driving circuit that just can judge accurately on the machine control panel to be measured is normal.
For convenient described pick-up unit is connected with machine control panel to be measured, and make things convenient for system personnel to observe in real time testing result, present embodiment preferably is laid in described main control unit on the independent check-out console, described converting interface is laid in independently on the card extender, display unit is laid on the independent display board, referring to shown in Figure 1, between each circuit board by inter-board interface is set, utilize winding displacement to carry out connecting between plate, realize the communication between plates of signal.Specifically, can inter-board interface P-CN1 be set at display board, the driving signal that the reception check-out console is exported by the inter-board interface M-CN13 that arranges on it, and transfer to display unit to drive display unit demonstration parameters, theoretical operating position or diagnostic trouble code.In the present embodiment, described display unit preferably adopts 6 charactrons to design as the output interface of check-out console detection data, carries out reasonable distribution by the displaying contents to every charactron, with the display requirement that satisfies parameters and detect data.
Be provided with six for the inter-board interface M-CN14 ~ M-CN19 that is connected with card extender at check-out console, why six inter-board interface M-CN14 ~ M-CN19 are set, in order can be simultaneously the driving circuit of five electric expansion valves or stepper motor to be detected in the lump, and an electric expansion valve or stepper motor driven control, with the detection speed of accelerating machine control panel to be measured (owing in air-conditioning products, generally all be provided with a plurality of electric expansion valves or stepper motor, adopt this design of present embodiment to detect simultaneously the driving circuit of the many covers in the air-conditioning products, so that testing efficiency significantly improves).Certainly, the laying quantity of described inter-board interface also can be designed to other suitable numbers according to actual needs, and present embodiment does not specifically limit this.
On card extender, inter-board interface J-CN12～J-CN17 carries out transmitting between plate to the driving signal that collects by winding displacement and the corresponding connection of inter-board interface M-CN14 ~ M-CN19 on the check-out console.For the electromagnetic induction part of electric expansion valve and this class of stepper motor, described driving signal is set of pulses signal, transfers to respectively each phase connection terminal of electric expansion valve or stepper motor, to drive the action of electric expansion valve or stepper motor.For when the driving circuit on not hindering machine control panel to be measured drives control to electric expansion valve or stepper motor, finish the acquisition testing of pulse signal, for the converting interface that is arranged on the card extender, present embodiment preferably adopts paired design, the interface of a pair of parallel connection namely all is set in each road converting interface, is respectively applied to the corresponding connection of output interface with connection terminal and the driving circuit of electric expansion valve (perhaps stepper motor).Describe as an example of J-CN1, J-CN7 example, interface J-CN1 is connected on the connection terminal of electric expansion valve, interface J-CN7 is connected on the output interface of driving circuit, two interface J-CN1, J-CN7 are in parallel with inter-board interface J-CN13 on card extender, i.e. corresponding connection one by one of corresponding each pin in three interfaces, for example 1 pin in three interfaces is interconnected, 2 pins are interconnected, 6 pins are interconnected, and realize thus collection and the transmission of set of pulses signal.
The connection terminal of considering present electric expansion valve is usually designed to 6 needle interfaces, and the connection terminal of stepper motor is usually designed to 5 needle interfaces, in order to satisfy the wiring requirement of two kinds of devices, present embodiment preferably lay to be used for respectively the converting interface (J-CN1 for example of connecting electronic expansion valve and driving circuit thereof on card extender, J-CN7) with the converting interface that is connected connecting stepper motor and driving circuit thereof (J-CN18 for example, J-CN23), although two-way converting interface number of pin is different, but the interface definition mode is basically identical, be that the 1-4 pin is used for transmission 4 road pulse signals, four phase connection terminals of connecting electronic expansion valve or stepper motor; 5,6 pins (being 5 pins for stepper motor) are used for the transmission direct supply, the common driving control that realizes electric expansion valve or stepper motor.Described two-way converting interface is in parallel, and then is in parallel with road inter-board interface (for example J-CN13) on the card extender, realize at synchronization that a set of pulses drives between the collection of signal and plate and transmit.
Described converting interface is carried out the multichannel expansion, the present embodiment preferred development becomes the five tunnel converting interface J-CN1～J-CN5 for connecting electronic expansion valve and driving circuit thereof, J-CN7～J-CN11 (can be called the expansion valve converting interface) and five tunnel is used for connecting the converting interface J-CN18～J-CN27 (can be called the motor converting interface) of stepper motor and driving circuit thereof, in parallel with five the inter-board interface J-CN13～J-CN17 grouping on the card extender respectively, namely an expansion valve converting interface and a motor converting interface and an inter-board interface are in parallel, realize thus to five electric expansion valves or five stepper motors the synchronous detection of corresponding driving circuit.
For the pulse signal of driving circuit output is realized reliable reception, be provided with five cover buffer circuits at described check-out console, be connected respectively between the different pins of five inter-board interface M-CN14 ~ M-CN18 and main control unit, after being used for five group pulse signals to five driving circuits outputs and carrying out the photoelectricity isolation processing respectively, transfer to again described main control unit.Describe as example to be connected to one between inter-board interface M-CN14 and main control unit U1 cover buffer circuit, for four phase electric expansion valve and four phase step motors, include 4 road pulse signal V-A in every group pulse signal, V-B, V-C, V-D (every phase connection terminal of electric expansion valve and stepper motor all needs to receive one road pulse signal), need to be via No. 4 photoelectrical coupler PC1, PC3, PC4, after PC6 carries out isolation processing respectively, transfer to respectively again 4 road I/O mouths of main control unit U1, to finish the detection of excitation order and theoretical aperture or theoretical position, referring to shown in Figure 2.Other quadruplet buffer circuits adopt identical building mode, originally are implemented in this and no longer launch explanation.
In the present embodiment, described main control unit U1 preferably adopts a Micro-processor MCV to carry out the circuit system design of check-out console.
For described pick-up unit being also used as the drive unit of electric expansion valve or stepper motor, on described card extender, also be provided with two-way and drive interface J-CN6, J-CN28, be respectively applied to the connection terminal of connecting electronic expansion valve and the connection terminal of stepper motor, two-way is driven interface J-CN6, after the J-CN28 parallel connection, be in parallel with inter-board interface J-CN12 again, by the inter-board interface M-CN19 on the inter-board interface J-CN12 connection check-out console, receive the driving signal (for example set of pulses signal) that check-out console sends, and then export electric expansion valve or stepper motor to by card extender, realize the driving control to electric expansion valve or stepper motor.
On described check-out console, except being provided with main control unit and buffer circuit, also be provided with key circuit, preferably include: arrange button START TEST, switching key KEY1 ,+button KEY2 ,-four buttons of button KEY3, be used for receiving system personnel's the order that arranges.The function of four buttons is respectively:
1) button START TEST is set
1.1) function of this button is that functional role arranges key;
1.2) unclamp immediately after pressing (for example in 1 second), the cyclic switching of entered function role selecting shows that namely first charactron " 1 ", " 2 ", " 3 ", " 4 " cyclic switching show;
1.3) this bond distance is by invalid.
2) switching key KEY1
2.1) function of this button is display switching key;
2.2) click and will show switching:
2.2.1) when first charactron shows " 1 " or " 3 ", unclamping immediately (for example in 1 second) after this button pressed, second and third charactron then " FA ", " Fb " cyclic switching shows;
2.2.2) when first charactron shows " 2 " or " 4 ", unclamping immediately (for example in 1 second) after this button pressed, second and third charactron then " C1 ", " C2 ", " C 3 ", " C4 ", " C5 " cyclic switching shows;
2.3) this bond distance is by invalid.
3)+button KEY2
3.1) function of this button is "+" key;
3.2) unclamp immediately after pressing (for example in 1 second), whenever increase 1 by the primary parameter value;
3.3) press rear maintenance, not unclamp, parameter value namely can increase continuously fast after 1 second, and increase 2 per 1 second, increases 1 in front 5 seconds at every turn, and per second increases 10 afterwards, decontrols this button and get final product after reaching satisfactory value.
4)-button KEY3
4.1) function of this button is " " key;
4.2) unclamp immediately after pressing (for example in 1 second), whenever subtract 1 by the primary parameter value;
4.3) press rear maintenance, not unclamp, parameter value namely can reduce continuously fast after 1 second, and subtract 2 per 1 second, subtracts 1 in front 5 seconds at every turn, and per second subtracts 10 afterwards, decontrols this button and get final product after reaching satisfactory value.
For the concrete display mode of six charactrons on the display board, present embodiment is preferably designed to following scheme:
1) charactron normally shows distribution
1.1) this shows need to be by key control, the initial default displaying contents is " 1FA000 ";
1.2) first of charactron be used for functional role and show, acquiescence shows " 1 ":
1 detects the electronic expansion valve-driving circuit on the machine control panel to be measured
The 2 detection frocks as electric expansion valve
3 detect the stepper motor driving circuit on the machine control panel to be measured
The 4 detection frocks as stepper motor;
1.3) second, third position of charactron is for switching display content, acquiescence shows " FA ";
1.3.1) when first charactron showed " 1 " or " 3 ", second, third showed that implication is charactron:
FA represents the target valve position
FB represents actual current valve position;
1.3.2) when first charactron showed " 2 " or " 4 ", second, third showed that implication is charactron:
The position display of the valve position of C1 electric expansion valve 1 or stepper motor 1
The position display of the valve position of C2 electric expansion valve 2 or stepper motor 2
The position display of the valve position of C3 electric expansion valve 3 or stepper motor 3
The position display of the valve position of C4 electric expansion valve 4 or stepper motor 4
The position display of the valve position of C5 electric expansion valve 5 or stepper motor 5;
1.4) charactron fourth, fifth, six be used for target component or the actual operation parameters of display setting, the 4th bit representation hundred figure places (then showing 0 less than hundred), the 5th bit representation tens (then showing 0 less than ten), the 6th bit representation units.
2) diagnostic trouble code of charactron shows
2.1) when reporting fault, first and second charactron shows " ER ", the expression fault;
2.2) the 5th, six charactron show numeral, expression failure code, the 5th bit representation tens (then showing 0 less than ten), the 6th bit representation units;
2.3) third and fourth charactron do not show any content.
In order to satisfy the self-powered requirement of described pick-up unit, in described pick-up unit, also be provided with transformer T1, A.C. contactor KM1, toggle switch K2 and earth leakage protective device K1, referring to shown in Figure 1.When the described pick-up unit of needs starts operation, at first attaching plug CN1 is inserted in the AC socket access 220V electric main.Electric main is transferred to the normally opened contact of A.C. contactor KM1 via earth leakage protective device K1; and after toggle switch K2 closure; coil electricity for A.C. contactor KM1; make the normally opened contact of A.C. contactor KM1 closed; and then electric main transferred to transformer T1; and after carrying out decompression transformation via transformer T1, generate by the rectification on the check-out console, filtering, mu balanced circuit that direct current is each electricity consumption load supplying with the required dc supply of electric loading on the check-out console.
In addition, on described check-out console, also preferably have additional software debugging interface M-CN20 and computer interface M-CN21, referring to shown in Figure 1, connect described main control unit by interface circuit respectively.Need to upgrade or when debugging, commissioning device can be plugged on the described software debugging interface M-CN20, by communicating by letter with main control unit, with upgrading, the debugging task of completion system software the system software of described pick-up unit.When system personnel need to be tested its control software that is used for control electric expansion valve or stepper motor action of writing, during checking, then computing machine can be connected on the described computer interface M-CN21 by data line, the aperture signal of control Software Create in the receiving computer, export main control unit to and generate corresponding set of pulses signal with conversion, and then export electric expansion valve or stepper motor to by the driving interface J-CN6 on the card extender or J-CN28, to drive the action of electric expansion valve or stepper motor, realize the checking to the control software of writing.
Based on the hardware assembling structure of Fig. 1, pick-up unit shown in Figure 2, the below is described in detail the concrete detection method of driving circuit, referring to shown in Figure 3.
Present embodiment only take detected electrons expansion valve driving circuit as example describes, may further comprise the steps:
On S301, the card extender that is connected to described pick-up unit that machine control panel to be measured and electric expansion valve is correct, for example respectively with card extender on the corresponding connection of expansion valve converting interface J-CN7/J-CN1, J-CN8/J-CN2, J-CN9/J-CN3, J-CN10/J-CN4, J-CN11/J-CN5.
Here, present embodiment is to describe simultaneously the driving circuit of 5 electric expansion valves is detected as example, if the driving circuit number that needs to detect is not 5, then can select according to actual needs to be connected on the expansion valve converting interface of suitable quantity.
S302, to the aperture setting value of machine control panel to be measured input electric expansion valve, control set of pulses signal V-A that driving circuit output on the machine control panel to be measured is used for driving the electronic expansion valve events, V-B, V-C, V-D (present embodiment describes as an example of required four road pulse signals of four phase electric expansion valves example), transfer to respectively electric expansion valve and check-out console, on the one hand drive the electronic expansion valve events, gather on the other hand this group pulse signal V-A, V-B, V-C, V-D and transfer to main control unit on the check-out console.
Whether this group pulse signal V-A, V-B, V-C, the V-D that S303, main control unit basis receive at first detects the excitation order correct, the pass valve of the corresponding electric expansion valve of different excitation order and open two kinds of different patterns of valve, concrete corresponding relation are joined and are shown in Table 1.
Table 1
In the table 1, the high level of 1 indicating impulse signal, the low level of 0 indicating impulse signal.When this group pulse signal V-A that main control unit receives in detection, V-B, V-C, V-D, if find that the excitation order is not right, when namely finding to have step number to lose, the charactron that then generates immediately on the diagnostic trouble code driving display board shows; If the excitation order is normal, then carry out subsequent step.
S304, main control unit calculate according to the pulse number that receives and generate the current corresponding theoretical aperture of electric expansion valve, and the driving charactron carries out the real-time demonstration of theoretical aperture.
For the situation that need to detect synchronously multi-channel driver circuit, main control unit can drive the theoretical aperture that charactron will calculate each electric expansion valve that generates and show in turn.
S305, after pulsed signal is complete, the theoretical aperture that charactron is shown compares with the aperture setting value of in advance input, if consistent, judges that then described driving circuit is normal; If inconsistent, then judge described driving circuit fault.
The deterministic process of this testing result needs system personnel artificially to judge, if driving circuit is normal, and electric expansion valve does not have action to setting aperture, can conclude that then fault has appearred in electric expansion valve self.
In order to improve the accuracy of testing result, present embodiment is after above-mentioned detecting step finishes, also preferably carry out taking turns again testing process, namely again to the aperture setting value of an electric expansion valve of machine control panel input to be measured, the driving circuit of controlling on the machine control panel to be measured is exported other set of pulses signal V-A, V-B, V-C, V-D.At this moment, the step number when main control unit detects the excitation order whether excitation actuating stopped since last time, if so, can judge that then described driving circuit is normal; If not, then generate diagnostic trouble code, and the driving charactron shows.
For the Performance Detection of stepper motor driving circuit, can copy the testing process of above-mentioned electric expansion valve to carry out, namely whether the excitation order is correct by detecting, whether theoretical position is consistent with setting value, judges whether stepper motor driving circuit is normal.
The pick-up unit of present embodiment can also be as the drive unit of electric expansion valve and stepper motor, be used for to drive an electric expansion valve or a stepper motor and move and set arbitrarily aperture or desired location, and realize the real-time demonstration of current aperture or current location by charactron.The startup of this function can enter by the corresponding function button on the system personnel operation detection device, and by operation+button KEY2 and-button KEY3 regulates setting value to the desired value that needs.By integrated this function on pick-up unit, can be so that the system testing of new engine becomes convenient.
Pick-up unit of the present utility model is applied in the testing process to air-conditioning control panel, can so that testing result more precisely, reliable, it is more simple, directly perceived to detect operation, the air-conditioning control panel after the detection also more has quality assurance.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. the device that the driving circuit that is used for the electromagnetic induction device detects is characterized in that: comprise main control unit, converting interface and display unit; Described converting interface is used for connecting machine control panel to be measured, receives driving circuit to the driving signal of electromagnetic induction device output, and transfers to described main control unit; Described main control unit calculates the theoretical operating position of electromagnetic induction device according to the drive signal waveform that receives, and then exports described display unit to and show.
2. the device that detects for the driving circuit to the electromagnetic induction device according to claim 1, it is characterized in that: described electromagnetic induction device is electric expansion valve or stepper motor.
3. the device that detects for the driving circuit to the electromagnetic induction device according to claim 2, it is characterized in that: described main control unit is laid on the check-out console, described converting interface is laid on the card extender, on the display board that described display unit is laid in, three circuit boards connect by inter-board interface is corresponding.
4. the device that detects for the driving circuit to the electromagnetic induction device according to claim 3, it is characterized in that: in described converting interface, comprise two interfaces that are respectively applied to the corresponding connection of connection terminal of the output interface of driving circuit and electric expansion valve or stepper motor, each pin in two interfaces is one by one after corresponding the connection, again with card extender on inter-board interface in the one by one corresponding connection of corresponding each pin.
5. the device that detects for the driving circuit to the electromagnetic induction device according to claim 4, it is characterized in that: be provided with 2N road converting interface at described card extender, wherein N road converting interface is used for connecting N platform electric expansion valve and driving circuit thereof, forms the expansion valve converting interface; N road converting interface is used for connecting N platform stepper motor and driving circuit thereof in addition, forms the motor converting interface; N road expansion valve converting interface and N road motor converting interface are one by one after the corresponding parallel connection, and be corresponding in parallel with the N road inter-board interface on the card extender again.
6. the device that detects for the driving circuit to the electromagnetic induction device according to claim 4, it is characterized in that: on described card extender, also be provided with two-way and drive interface, be respectively applied to the connection terminal of connecting electronic expansion valve and the connection terminal of stepper motor, described two-way drives interface and is in parallel, and be in parallel with independent one road inter-board interface on the card extender, receive the driving signal that check-out console sends and also export electric expansion valve to or stepper motor.
7. the device that detects for the driving circuit to the electromagnetic induction device according to claim 3, it is characterized in that: described driving signal is set of pulses signal; On described check-out console, also be provided with the multi-path light electric coupler, after each the road pulse signal that receives by the inter-board interface on the check-out console carries out the photoelectricity isolation processing via No. one photoelectrical coupler separately, transfer to again described main control unit.
8. each described device that detects for the driving circuit to the electromagnetic induction device in 7 according to claim 1, it is characterized in that: on described device, also be provided with key circuit, gather key command and transfer to described main control unit and carry out the instruction parsing.
9. each described device that detects for the driving circuit to the electromagnetic induction device in 7 according to claim 1 is characterized in that: also be provided with transformer, A.C. contactor, toggle switch and earth leakage protective device in described device; Be transferred to the normally opened contact of A.C. contactor via earth leakage protective device by the AC power of attaching plug access, and when described normally opened contact is closed, transfer to transformer and carry out decompression transformation, AC power by transformer output generates dc supply via rectification, filtering, mu balanced circuit, is the direct current electricity consumption load supplying in the device; Described toggle switch is connected between the coil of AC power cord and described A.C. contactor.
10. each described device that detects for the driving circuit to the electromagnetic induction device in 7 according to claim 1, it is characterized in that: on described device, also be provided with software debugging interface and computer interface, connect described main control unit by interface circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220429353 CN202758045U (en) | 2012-08-28 | 2012-08-28 | Apparatus used for detecting drive circuit of electromagnetic induction |
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| CN 201220429353 CN202758045U (en) | 2012-08-28 | 2012-08-28 | Apparatus used for detecting drive circuit of electromagnetic induction |
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| CN 201220429353 Expired - Fee Related CN202758045U (en) | 2012-08-28 | 2012-08-28 | Apparatus used for detecting drive circuit of electromagnetic induction |
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| CN (1) | CN202758045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798813A (en) * | 2012-08-28 | 2012-11-28 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN104360726A (en) * | 2014-12-08 | 2015-02-18 | 邢鹏达 | Computer hardware safety monitoring device |
-
2012
- 2012-08-28 CN CN 201220429353 patent/CN202758045U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798813A (en) * | 2012-08-28 | 2012-11-28 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN102798813B (en) * | 2012-08-28 | 2015-01-21 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN104360726A (en) * | 2014-12-08 | 2015-02-18 | 邢鹏达 | Computer hardware safety monitoring device |
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Granted publication date: 20130227 Termination date: 20170828 |