CN211959098U - Troubleshooting device and refrigerating system of stepping motor coil - Google Patents
Troubleshooting device and refrigerating system of stepping motor coil Download PDFInfo
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- CN211959098U CN211959098U CN202020877496.1U CN202020877496U CN211959098U CN 211959098 U CN211959098 U CN 211959098U CN 202020877496 U CN202020877496 U CN 202020877496U CN 211959098 U CN211959098 U CN 211959098U
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Abstract
The utility model provides a troubleshooting device and refrigerating system of step motor coil, the troubleshooting device of step motor coil includes: a step motor coil module; the coil driving module is connected with the stepping motor coil module; the current sampling module is connected with the coil driving module; the fault troubleshooting module is respectively connected with the coil driving module and the current sampling module; the utility model provides a circuit structure is simple, with low costs troubleshooting circuit, provides the guarantee for whole air conditioner refrigerating system's safe and reliable operation and efficiency steady operation to improve economic benefits.
Description
Technical Field
The utility model belongs to the technical field of circuit failure diagnosis, a troubleshooting device is related to, especially relate to a troubleshooting device and refrigerating system of step motor coil.
Background
The stepping motor is widely applied in the field of automatic control, the control of an air conditioning system is provided with a swing blade motor, an electronic expansion valve and the like, particularly the electronic expansion valve plays an important role in the air conditioning system, and the working state of the electronic expansion valve directly influences the energy efficiency of the air conditioner and the operation safety of the system. The control method of the stepping motor or the electronic expansion valve comprises the following steps: (1) the circuit only applies driving pulse to the coil of the electronic expansion valve (the coil of the stepping motor); (2) the circuit applies a driving pulse and simultaneously detects the high-low level state of the interface. There are problems as follows: (1) the actual action state of the coil of the electronic expansion valve can not be detected, including poor contact of a connecting wire, disconnection of the coil and turn-to-turn/interphase short circuit faults of the coil, circuits can not be directly detected, and the fault is judged only by the temperature of an external pipeline or by observing whether a motor rotates or not during the fault, so that the existence of hysteresis is judged; (2) poor contact of the connecting wire of the electronic expansion valve and disconnection of the coil can be detected, but the coil cannot be detected when turn-to-turn short circuit and interphase short circuit occur.
Therefore, how to provide a troubleshooting device for timely detecting a stepping motor coil circuit fault has become a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a fault finding device and refrigerating system of step motor coil for solve prior art and can't provide the problem that the fault finding device of in time detecting step motor coil circuit trouble is provided at the system during operation.
In order to achieve the above objects and other related objects, an aspect of the present invention provides a troubleshooting device for a stepping motor coil, the troubleshooting device for a stepping motor coil including: a step motor coil module; the coil driving module is connected with the stepping motor coil module; the current sampling module is connected with the coil driving module; the fault troubleshooting module is respectively connected with the coil driving module and the current sampling module; the fault troubleshooting module sends an electric signal to the coil driving module, the coil driving module amplifies the electric signal and transmits the amplified signal to the stepping motor coil module, the stepping motor coil module is electrified to work, the current sampling module collects a current signal in a loop formed by the stepping motor coil module and the coil driving module and transmits the current signal to the fault troubleshooting module, and the fault troubleshooting module conducts fault troubleshooting on the stepping motor coil according to the current signal.
In an embodiment of the present invention, the first pin of the troubleshooting module is connected to the first pin of the coil driving module; a second pin of the troubleshooting module is connected with a second pin of the coil driving module; a third pin of the troubleshooting module is connected with a third pin of the coil driving module; a fourth pin of the troubleshooting module is connected with a fourth pin of the coil driving module; and a fifth pin of the troubleshooting module is connected with the current sampling module.
In an embodiment of the present invention, the current sampling module is connected to the eighth pin of the coil driving module.
In an embodiment of the present invention, the stepping motor coil module is a four-phase stepping motor coil using dual power supplies; the first end of the stepping motor coil module is connected with the sixteenth pin of the coil driving module; the second end of the stepping motor coil module is connected with the fifteenth pin of the coil driving module; the third end of the stepping motor coil module is connected with the fourteenth pin of the coil driving module; the fourth end of the stepping motor coil module is connected with the thirteenth pin of the coil driving module; the fifth end and the sixth end of the stepping motor coil module are connected with the positive electrode of the power supply; and a ninth pin of the coil driving module is connected with the positive electrode of the power supply.
In an embodiment of the present invention, the troubleshooting device of the stepping motor coil further includes: and the connector module is respectively connected with the stepping motor coil module and the coil driving module, and the coil driving module transmits the amplified electric signal to the stepping motor coil module through the connector module.
In an embodiment of the present invention, the first end of the stepping motor coil module is connected to the first pin of the connector module, and the first pin of the connector module is connected to the sixteenth pin of the coil driving module; the second end of the stepping motor coil module is connected with the second pin of the connector module, and the second pin of the connector module is connected with the fifteenth pin of the coil driving module; the third end of the stepping motor coil module is connected with the third pin of the connector module, and the third pin of the connector module is connected with the fourteenth pin of the coil driving module; the fourth end of the stepping motor coil module is connected with the fourth pin of the connector module, and the fourth pin of the connector module is connected with the thirteenth pin of the coil driving module; the fifth end of the stepping motor coil module is connected with the fifth pin of the connector module, the sixth end of the stepping motor coil module is connected with the sixth pin of the connector module, and the fifth pin and the sixth pin of the connector module are both connected with the positive electrode of the power supply; and the fifth pin and the sixth pin of the connector module are both connected with the ninth pin of the coil driving module.
In an embodiment of the present invention, the current sampling module includes: the sampling circuit comprises a first sampling resistor, a second sampling resistor and a sampling capacitor; one end of the sampling capacitor is connected with a fifth pin of the troubleshooting module and one end of the second sampling resistor, the other end of the sampling capacitor is connected with one end of the first sampling resistor and the ground, and the other end of the first sampling resistor is connected with the other end of the second sampling resistor and an eighth pin of the coil driving module.
In an embodiment of the present invention, the current sampling module includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor and an operational amplifier; one end of the first resistor is connected with an eighth pin of the coil driving module and one end of the third resistor, the other end of the first resistor is connected with one end of the second resistor and the ground, the other end of the second resistor is connected with one end of the fourth resistor and the negative input end of the operational amplifier, the other end of the fourth resistor is connected with the output end of the operational amplifier and one end of the fifth resistor, the other end of the fifth resistor is connected with one end of the first capacitor and the fifth pin of the troubleshooting module, and the other end of the first capacitor is connected with the ground.
Another aspect of the present invention provides a refrigeration system, comprising a troubleshooting device for a stepper motor coil; the troubleshooting device of step motor coil includes: the device comprises a stepping motor coil module, a coil driving module, a current sampling module and a troubleshooting module; the coil driving module is connected with the stepping motor coil module; the current sampling module is connected with the coil driving module; the fault troubleshooting module is respectively connected with the coil driving module and the current sampling module; the fault troubleshooting module sends an electric signal to the coil driving module, the coil driving module amplifies the electric signal and transmits the amplified signal to the stepping motor coil module, the stepping motor coil module is electrified to work, the current sampling module collects a current signal in a loop formed by the stepping motor coil module and the coil driving module and transmits the current signal to the fault troubleshooting module, and the fault troubleshooting module conducts fault troubleshooting on the stepping motor coil according to the current signal.
As above, step motor coil's troubleshooting device, following beneficial effect has:
the utility model discloses a troubleshooting device of step motor coil for the controller in the troubleshooting module is at last electricity or in the system work, can in time detect whether electronic expansion valve coil or other step motor coils have trouble such as open a way, short circuit, need not to wait that pressure or pipeline temperature among the air conditioning system judge again that it is out of order, avoids air conditioning system to move the potential safety hazard of bringing for the reliability operation of system under the electronic expansion valve fault state. The fault troubleshooting circuit is simple in circuit structure and low in cost, and guarantees safe and reliable operation and energy efficiency stable operation of the whole air-conditioning refrigeration system, so that economic benefits are improved.
Drawings
Fig. 1 is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to another embodiment of the present invention.
Description of the element reference numerals
1 troubleshooting device of stepping motor coil
11 stepping motor coil module
12 coil driving module
13 current sampling module
14 troubleshooting module
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The fault troubleshooting device for the stepping motor coil provided by the embodiment provides a fault troubleshooting circuit with a simple circuit structure and low cost, and guarantees safe and reliable operation and energy efficiency stable operation of the whole air-conditioning refrigeration system, so that economic benefits are improved.
Please refer to fig. 1, which is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to an embodiment of the present invention. As shown in fig. 1, the troubleshooting apparatus 1 of the stepping motor coil includes: the stepping motor comprises a stepping motor coil module 11, a coil driving module 12, a current sampling module 13 and a troubleshooting module 14. The stepping motor coil module takes an electronic expansion valve coil as an example.
The coil driving module 12 is connected to the stepping motor coil module 11.
The current sampling module 13 is connected to the coil driving module 12.
The troubleshooting module 14 is respectively connected with the coil driving module 12 and the current sampling module 13.
The troubleshooting module 14 sends an electric signal to the coil driving module 12, the coil driving module 12 amplifies the electric signal and transmits the amplified signal to the stepping motor coil module 11, the stepping motor coil module 11 works with electricity, and the current sampling module 13 collects a current signal in a loop formed by the stepping motor coil module 11 and the coil driving module 12 and transmits the current signal to the troubleshooting module 14, so that the troubleshooting module 14 performs troubleshooting on the electronic expansion valve coil according to the current signal. When the coil of the electronic expansion valve is open-circuited, no current passes through the coil, and the current sampling module 13 samples a current value of 0; when the electronic expansion valve coil has a turn-to-turn short circuit, the current sampling module 13 samples that the current value is necessarily larger than the preset current value.
Please refer to fig. 2, which is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to an embodiment of the present invention. The electric current sampling adopts resistance sampling mode, and other components and parts or devices that can realize the electric current sampling are also in the utility model discloses the within range of protection. As shown in fig. 2, one embodiment of resistance sampling is shown.
In fig. 2, the troubleshooting module is a Micro Controller Unit (MCU), the coil driving module is exemplified by a driving chip ULN2003, and a first pin P1 of the troubleshooting module is connected to a first pin 1B of the coil driving module; the second pin P2 of the troubleshooting module is connected with the second pin 2B of the coil driving module; the third pin P3 of the troubleshooting module is connected with the third pin 3B of the coil driving module; a fourth pin P4 of the troubleshooting module is connected with a fourth pin 4B of the coil driving module; the fifth pin P5 of the troubleshooting module is connected to the current sampling module. Pins P1, P2, P3 and P4 of the MCU are electronic expansion valve driving pulse signal output pins.
And the current sampling module is connected with an eighth pin E of the coil driving module.
The stepping motor coil module is an electronic expansion valve coil, wherein the electronic expansion valve is an electric electronic expansion valve, and preferably a four-phase stepping motor coil using dual power supplies.
The first end of the stepping motor coil module is connected with a sixteenth pin 1C of the coil driving module; the second end of the stepping motor coil module is connected with a fifteenth pin 2C of the coil driving module; the third end of the stepping motor coil module is connected with a fourteenth pin 3C of the coil driving module; the fourth end of the stepping motor coil module is connected with a thirteenth pin 4C of the coil driving module; the fifth end and the sixth end of the stepping motor coil module are connected with the positive pole of the power supply by + 12V; and a ninth pin COM of the coil driving module is connected with the positive electrode +12V of the power supply.
It should be noted that the stepping motor coil module may be directly connected to the coil driving module correspondingly, or the electrical signal may be connected and transmitted between the stepping motor coil module and the coil driving module through the connector module CN 1. In the latter, the troubleshooting device for a stepping motor coil further includes: the connector module CN1 is respectively connected with the stepping motor coil module and the coil driving module, and the coil driving module transmits the amplified electric signal to the stepping motor coil module through the connector module. Specifically, the connector module is an electronic expansion valve socket.
Specifically, a first end of the stepping motor coil module is connected with a first pin 1 of the connector module, and the first pin 1 of the connector module is connected with a sixteenth pin 1C of the coil driving module; the second end of the stepping motor coil module is connected with the second pin 2 of the connector module, and the second pin 2 of the connector module is connected with the fifteenth pin 2C of the coil driving module; the third end of the stepping motor coil module is connected with a third pin 3 of the connector module, and the third pin 3 of the connector module is connected with a fourteenth pin 3C of the coil driving module; a fourth end of the stepping motor coil module is connected with a fourth pin 4 of the connector module, and the fourth pin 4 of the connector module is connected with a thirteenth pin 4C of the coil driving module; the fifth end of the stepping motor coil module is connected with the fifth pin 5 of the connector module, the sixth end of the stepping motor coil module is connected with the sixth pin 6 of the connector module, and the fifth pin 5 and the sixth pin 6 of the connector module are both connected with the positive electrode of the power supply by + 12V; and a fifth pin 5 and a sixth pin 6 of the connector module are both connected with a ninth pin COM of the coil driving module.
In fig. 2, the current sampling module includes: the sampling circuit comprises a first sampling resistor R1, a second sampling resistor R2 and a sampling capacitor C1.
One end of the sampling capacitor C1 is connected to one end of a fifth pin P5 and one end of a second sampling resistor R2 of the troubleshooting module, the other end of the sampling capacitor C1 is connected to one end of the first sampling resistor R1 and the ground GND, and the other end of the first sampling resistor R1 is connected to the other end of the second sampling resistor R2 and the eighth pin E of the coil driving module.
It should be noted that, pin connection between step motor coil module, coil drive module and the troubleshooting module only does the utility model discloses be used as one of them well connected mode of circuit principle explanation, other changes because of the different corresponding pin connected mode that go on of chip pin definition are also in the utility model discloses the within range of protection.
Specifically, the coil driving module is a driving chip, and the troubleshooting module is an MCU (micro controller Unit). The working process of the troubleshooting device for the stepping motor coil comprises the following steps: when the controller is powered on or the system works, an MCU (Microcontroller Unit) outputs an electronic expansion valve control signal according to the preset logic of a program, and after the electronic expansion valve control signal is amplified in an opposite phase mode by a driving chip, a coil of the electronic expansion valve is powered on; and when the electronic expansion valve acts, the current passes through the electronic expansion valve coil and the internal transistor of the driving chip and then returns to GND (ground) to form a loop after passing through a sampling resistor R1, and the resistor R1 inputs the current signal sampled to the electronic expansion valve coil to the P5 port of the MCU. Comparing the sampled current value with a current value preset by software by an MCU (micro controller Unit), and judging that the coil of the electronic expansion valve is normal when the sampling value is within the range of the preset value; and when the sampling value is out of the preset value range, judging that the coil of the electronic expansion valve has a fault.
If the MCU outputs a P1 loop electronic expansion valve coil open circuit, when the P1 outputs a control signal, no current flows through the sampling resistor R1 due to the coil open circuit, the current signal fed back to the MCU input port P5 from the two ends of the R1 is 0, and the current signal is not in the current value range preset by software, and the MCU reports the open circuit fault of the electronic expansion valve coil.
If the MCU outputs a local short circuit of the coil of the electronic expansion valve of the P1 loop, when the P1 outputs a control signal, the current flowing through the sampling resistor R1 is larger than a normal value due to the short circuit of the local coil, the current signal fed back to the input port P5 of the MCU from the two ends of the R1 is also increased and exceeds the current value range preset by software, and the MCU reports the short circuit fault of the coil of the electronic expansion valve.
At present, the working power supply voltage of most of the coils of the electronic expansion valve on the market is 12V +/-10%, the working current of a single coil is 250mA, and the working current of two coils is 500mA simultaneously. When the sampling resistor R1 is 2 omega, the voltage of a single coil during working is 12-2 x 0.25-11.5V, and the sampling voltage is 0.5V; when the two coils work simultaneously, the voltage is 12-2 x 0.5-11V, and the sampling voltage is 1V. The working voltage of the electronic expansion valve coil can be within a required range, and the current sampling voltage also meets the MCU judgment precision requirement.
Please refer to fig. 3, which is a schematic circuit diagram of a troubleshooting apparatus for a stepping motor coil according to another embodiment of the present invention. As shown in fig. 3, another embodiment of resistance sampling is shown.
In fig. 3, the current sampling module includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1 and an operational amplifier U2.
One end of the first resistor R1 is connected to an eighth pin E of the coil driving module and one end of the third resistor R3, the other end of the first resistor R1 is connected to one end of the second resistor R2 and ground GND, the other end of the second resistor R2 is connected to one end of the fourth resistor R4 and the negative input end of the operational amplifier U2, the other end of the fourth resistor R4 is connected to the output end of the operational amplifier U2 and one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the first capacitor C1 and the fifth pin P5 of the troubleshooting module, and the other end of the first capacitor C1 is connected to ground GND.
It should be noted that, the utility model discloses well fault finding device of step motor coil can be applied to the fault detection of electronic expansion valve coil, in addition, is applied to other step motor coil fault detection's circuit connection structure with step motor coil's fault finding device in the circuit, also is the utility model discloses the within range of protection.
The utility model provides a refrigerating system, troubleshooting device including step motor coil.
The troubleshooting device of step motor coil includes: the device comprises a stepping motor coil module, a coil driving module, a current sampling module and a troubleshooting module; the coil driving module is connected with the stepping motor coil module; the current sampling module is connected with the coil driving module; and the troubleshooting module is respectively connected with the coil driving module and the current sampling module.
The electronic expansion valve coil fault diagnosis device comprises a fault troubleshooting module, a coil driving module, a stepping motor coil module, a current sampling module and a fault troubleshooting module, wherein the fault troubleshooting module sends an electric signal to the coil driving module, the coil driving module amplifies the electric signal and then transmits the signal to the stepping motor coil module, the stepping motor coil module is powered to work, the current sampling module collects a current signal in a loop formed by the stepping motor coil module and the coil driving module and transmits the current signal to the fault troubleshooting module, and therefore the fault troubleshooting module conducts fault troubleshooting on the electronic expansion valve coil according to the current signal.
To sum up, the utility model provides a troubleshooting device of step motor coil makes the controller in the troubleshooting module at last electricity or in the system work, can in time detect whether electronic expansion valve coil or other step motor coils have trouble such as opening a way, short circuit, need not to wait that pressure or pipeline temperature among the air conditioning system are unusual to judge whether it is out of order again, avoids the potential safety hazard that air conditioning system moves and brings for the reliability operation of system under the electronic expansion valve fault state. The fault troubleshooting circuit is simple in circuit structure and low in cost, and guarantees safe and reliable operation and energy efficiency stable operation of the whole air-conditioning refrigeration system, so that economic benefits are improved. Effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A troubleshooting device of a stepping motor coil, characterized in that the troubleshooting device of a stepping motor coil comprises:
a step motor coil module;
the coil driving module is connected with the stepping motor coil module;
the current sampling module is connected with the coil driving module;
and the fault troubleshooting module is respectively connected with the coil driving module and the current sampling module.
2. The apparatus for troubleshooting of a coil of a stepping motor according to claim 1, characterized in that:
a first pin of the troubleshooting module is connected with a first pin of the coil driving module;
a second pin of the troubleshooting module is connected with a second pin of the coil driving module;
a third pin of the troubleshooting module is connected with a third pin of the coil driving module;
a fourth pin of the troubleshooting module is connected with a fourth pin of the coil driving module;
and a fifth pin of the troubleshooting module is connected with the current sampling module.
3. The troubleshooting device of a stepping motor coil according to claim 2, characterized in that:
and the current sampling module is connected with an eighth pin of the coil driving module.
4. The troubleshooting apparatus of a stepping motor coil according to claim 3, wherein the stepping motor coil module is a four-phase stepping motor coil using a dual power supply;
the first end of the stepping motor coil module is connected with the sixteenth pin of the coil driving module;
the second end of the stepping motor coil module is connected with the fifteenth pin of the coil driving module;
the third end of the stepping motor coil module is connected with the fourteenth pin of the coil driving module;
the fourth end of the stepping motor coil module is connected with the thirteenth pin of the coil driving module;
the fifth end and the sixth end of the stepping motor coil module are connected with the positive electrode of the power supply;
and a ninth pin of the coil driving module is connected with the positive electrode of the power supply.
5. The stepping motor coil troubleshooting device according to claim 4, characterized in that the stepping motor coil troubleshooting device further comprises:
and the connector module is respectively connected with the stepping motor coil module and the coil driving module, and the coil driving module transmits the amplified electric signal to the stepping motor coil module through the connector module.
6. The stepping motor coil troubleshooting device according to claim 5, characterized in that:
the first end of the stepping motor coil module is connected with the first pin of the connector module, and the first pin of the connector module is connected with the sixteenth pin of the coil driving module;
the second end of the stepping motor coil module is connected with the second pin of the connector module, and the second pin of the connector module is connected with the fifteenth pin of the coil driving module;
the third end of the stepping motor coil module is connected with the third pin of the connector module, and the third pin of the connector module is connected with the fourteenth pin of the coil driving module;
the fourth end of the stepping motor coil module is connected with the fourth pin of the connector module, and the fourth pin of the connector module is connected with the thirteenth pin of the coil driving module;
the fifth end of the stepping motor coil module is connected with the fifth pin of the connector module, the sixth end of the stepping motor coil module is connected with the sixth pin of the connector module, and the fifth pin and the sixth pin of the connector module are both connected with the positive electrode of the power supply;
and the fifth pin and the sixth pin of the connector module are both connected with the ninth pin of the coil driving module.
7. The stepping motor coil troubleshooting apparatus according to any one of claims 1 to 6 wherein the current sampling module comprises: the sampling circuit comprises a first sampling resistor, a second sampling resistor and a sampling capacitor;
one end of the sampling capacitor is connected with a fifth pin of the troubleshooting module and one end of the second sampling resistor, the other end of the sampling capacitor is connected with one end of the first sampling resistor and the ground, and the other end of the first sampling resistor is connected with the other end of the second sampling resistor and an eighth pin of the coil driving module.
8. The stepping motor coil troubleshooting apparatus according to any one of claims 1 to 6 wherein the current sampling module comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor and an operational amplifier;
one end of the first resistor is connected with an eighth pin of the coil driving module and one end of the third resistor, the other end of the first resistor is connected with one end of the second resistor and the ground, the other end of the second resistor is connected with one end of the fourth resistor and the negative input end of the operational amplifier, the other end of the fourth resistor is connected with the output end of the operational amplifier and one end of the fifth resistor, the other end of the fifth resistor is connected with one end of the first capacitor and the fifth pin of the troubleshooting module, and the other end of the first capacitor is connected with the ground.
9. A refrigeration system, comprising a troubleshooting device for a stepper motor coil;
the troubleshooting device of step motor coil includes: the device comprises a stepping motor coil module, a coil driving module, a current sampling module and a troubleshooting module; the coil driving module is connected with the stepping motor coil module; the current sampling module is connected with the coil driving module; and the troubleshooting module is respectively connected with the coil driving module and the current sampling module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877496.1U CN211959098U (en) | 2020-05-22 | 2020-05-22 | Troubleshooting device and refrigerating system of stepping motor coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877496.1U CN211959098U (en) | 2020-05-22 | 2020-05-22 | Troubleshooting device and refrigerating system of stepping motor coil |
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| CN211959098U true CN211959098U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114011A (en) * | 2021-11-26 | 2022-03-01 | 宁波奥克斯电气股份有限公司 | Fault detection circuit and electronic equipment |
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2020
- 2020-05-22 CN CN202020877496.1U patent/CN211959098U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114011A (en) * | 2021-11-26 | 2022-03-01 | 宁波奥克斯电气股份有限公司 | Fault detection circuit and electronic equipment |
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