Motor fault monitoring alarm

Abstract

The utility model provides a motor fault monitoring alarm. The motor fault monitoring alarm comprises a shell; the detection end of the current detection module is connected with the winding of the motor, and the current detection module is used for detecting the winding current of the motor; the switch module is connected to a power supply path of the motor in series, and the switch module is used for selectively conducting the power supply path of the motor; the input end of the processing module is connected with the output end of the current detection module, the output end of the processing module is connected with the input end of the switch module, and the processing module is used for sending out an alarm signal according to the winding current and controlling the on-off of the switch module. According to the motor fault monitoring alarm, an automatic motor monitoring mode is utilized, operation is simpler and more convenient, the accuracy is higher, the detection efficiency and quality of motor faults are effectively improved, the motor faults can be processed in time through the automatic monitoring mode, and then more serious safety accidents are avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motor monitoring, and particularly to a motor fault monitoring alarm. Background Art

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction, and it is widely used in various fields. The traditional method for detecting motor faults is to measure the winding current with tools such as a clamp ammeter, and then the detection personnel judge the operating state of the motor by comparing the winding current.

[0003] This detection method is not only inconvenient to operate but also inaccurate, resulting in low detection efficiency and quality of motor faults. Moreover, the manual detection method has a large lag and cannot handle motor faults in time, easily causing more serious safety accidents. Summary of the Invention

[0004] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a motor fault monitoring alarm.

[0006] To achieve the above object, the present disclosure provides a motor fault monitoring alarm, including: a housing; a current detection module, the current detection module is arranged in the housing, and the detection end of the current detection module is connected to the winding of the motor, and the current detection module is used to detect the winding current of the motor; a switch module, the switch module is connected in series on the power supply path of the motor, and the switch module is used to selectively conduct the power supply path of the motor; a processing module, the processing module is arranged in the housing, and the input end of the processing module is connected to the output end of the current detection module, the output end of the processing module is connected to the input end of the switch module, and the processing module is used to send an alarm signal according to the winding current and control the on-off of the switch module.

[0007] Optionally, the alarm further includes: a signal conversion module, the signal conversion module is arranged in the housing, and the signal conversion module is connected in series between the input end of the processing module and the output end of the current detection module, and the signal conversion module is used to convert the winding current signal into a digital signal.

[0008] Optionally, the signal conversion module includes: a first conversion unit disposed inside the housing, with the input end of the first conversion unit connected to the output end of the current detection module, and the first conversion unit is configured to convert the winding current signal into an analog signal; a second conversion unit disposed inside the housing, with the input end of the second conversion unit connected to the output end of the first conversion unit, and the output end of the second conversion unit connected to the input end of the processing module, and the second conversion unit is configured to convert the analog signal into the digital signal.

[0009] Optionally, the signal conversion module further includes: an opto-isolation unit disposed inside the housing, and the opto-isolation unit is connected in series between the output end of the second conversion unit and the input end of the processing module, with the input end of the opto-isolation unit connected to the output end of the second conversion unit and the output end of the opto-isolation unit connected to the input end of the processing module, and the opto-isolation unit is used for opto-isolation.

[0010] Optionally, the current detection module includes: a DC current transformer disposed inside the housing, with the detection end of the DC current transformer connected to the winding of the DC motor, and the output end of the DC current transformer connected to the input end of the processing module, and the DC current transformer is used to detect the winding current of the DC motor; and / or an AC current transformer disposed inside the housing, with the detection end of the AC current transformer connected to the winding of the AC motor, and the output end of the AC current transformer connected to the input end of the processing module, and the AC current transformer is used to detect the winding current of the AC motor.

[0011] Optionally, the current detection module further includes: a switching switch disposed on the housing, with the output end of the switching switch connected to the input end of the processing module, and the switching switch is used to switch the working mode of the processing module; wherein, the working modes of the processing module include: a DC motor monitoring mode and an AC motor monitoring mode.

[0012] Optionally, the alarm further includes: a temperature detection module disposed inside the housing, with the detection end of the temperature detection module connected to the motor, and the output end of the temperature detection module connected to the input end of the processing module, and the temperature detection module is used to detect the temperature of the motor; wherein, the processing module is used to issue an alarm signal according to the temperature of the motor and control the on-off of the switch module.

[0013] Optionally, the alarm further includes: a touch screen disposed on the housing, and a communication end of the touch screen is connected to a communication end of the processing module. The touch screen is configured to display alarm information according to the alarm signal and output a control signal to the processing module; and / or a host computer, which is disposed away from the housing, and a communication end of the host computer is connected to a communication end of the processing module. The host computer is configured to display alarm information according to the alarm signal and output a control signal to the processing module.

[0014] Optionally, the switch module includes: a intermediate relay, a coil of the intermediate relay is disposed in the housing, and contacts of the intermediate relay are connected in series on a power supply path of the motor. A coil power supply end of the intermediate relay is connected to an output end of the processing module; wherein, the processing module is configured to control a power-on state of the coil of the intermediate relay according to the winding current to control the on / off of the contacts of the intermediate relay.

[0015] Optionally, the alarm further includes: a power supply module disposed in the housing, and a power supply end of the power supply module is connected to a power supply end of an external power supply. A power supply end of the power supply module is connected to a power supply end of the processing module; wherein, the alarm further includes: an indicator light disposed on the housing, and a power supply end of the indicator light is connected to the power supply end of the power supply module. The indicator light is configured to emit an indicating light when the power supply module supplies power; and / or a power switch disposed on the housing, and the power switch is connected in series between the power supply end of the power supply module and the power supply end of the external power supply. The power switch is configured to selectively conduct a path between the power supply module and the external power supply.

[0016] The technical solution provided by the present disclosure may include the following beneficial effects:

[0017] Through the cooperation of the current detection module and the switch module, the processing module can issue an alarm signal according to the winding current of the motor and control the on / off of the power supply path of the motor, thereby realizing automatic monitoring of motor faults. Thus, by using an automated motor monitoring method, not only is the operation more convenient, but also the accuracy is higher, thereby effectively improving the detection efficiency and quality of motor faults. Moreover, the automatic monitoring method has stronger timeliness, so that motor faults can be processed in a timely manner, thereby avoiding more serious safety accidents.

[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present disclosure. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0020] Figure 1 is a schematic structural diagram of a motor fault monitoring and alarm proposed in an embodiment of the present disclosure;

[0021] Figure 2 is a schematic structural diagram of a motor fault monitoring and alarm proposed in an embodiment of the present disclosure;

[0022] Figure 3 is a schematic circuit diagram at the detection end of the current detection module in a motor fault monitoring and alarm proposed in an embodiment of the present disclosure;

[0023] As shown in the figure: 1. Housing;

[0024] 2. Current detection module, 21. DC current transformer, 22. AC current transformer, 23. Switch;

[0025] 3. Switch module, 31. Coil, 32. Contact;

[0026] 4. Processing module;

[0027] 5. Signal conversion module, 51. First conversion unit, 52. Second conversion unit, 53. Optoelectronic isolation unit;

[0028] 6. Temperature detection module, 7. Touch screen, 8. Power supply module, 9. Indicator light, 10. Power switch;

[0029] 100. Motor. Detailed implementation manners

[0030] The embodiments of the present disclosure will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0031] Such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, an embodiment of the present disclosure provides a motor 100 fault monitoring alarm, including: a housing 1, a current detection module 2, a switch module 3, and a processing module 4. The current detection module 2 is disposed within the housing 1, and the detection end of the current detection module 2 is connected to the winding of the motor 100. The current detection module 2 is configured to detect the winding current of the motor 100. The switch module 3 is connected in series to the power supply path of the motor 100, and the switch module 3 is configured to selectively conduct the power supply path of the motor 100. The processing module 4 is disposed within the housing 1, and the input end of the processing module 4 is connected to the output end of the current detection module 2, and the output end of the processing module 4 is connected to the input end of the switch module 3. The processing module 4 is configured to issue an alarm signal based on the winding current and control the on / off of the switch module 3.

[0032] It can be understood that since the detection end of the current detection module 2 is connected to the winding of the motor 100, and the output end of the current detection module 2 is connected to the input end of the processing module 4, the current detection module 2 can detect the winding current of the motor 100 and send the winding current signal to the processing module 4. Since the switch module 3 is connected in series to the power supply path of the motor 100, and the input end of the switch module 3 is connected to the output end of the processing module 4, the switch module 3 can conduct or cut off the power supply path of the motor 100 under the control of the processing module 4.

[0033] Through the cooperation of the current detection module 2 and the switch module 3, the processing module 4 can issue an alarm signal based on the winding current of the motor 100 and control the on / off of the power supply path of the motor 100, thereby realizing the automatic monitoring of the motor 100 fault. Thus, by using the automated motor 100 monitoring method, not only is the operation more convenient, but also the accuracy is higher, effectively improving the detection efficiency and quality of the motor 100 fault. Moreover, the automatic monitoring method has stronger timeliness, enabling timely handling of the motor 100 fault and thus avoiding more serious safety accidents.

[0034] It should be noted that the housing 1 is used to carry the current detection module 2, the processing module 4, etc., to achieve the efficient integration of the alarm, and thus facilitate the carrying and arrangement of the alarm, making the use of the alarm more convenient. The specific type of the housing 1 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the housing 1 can be a structure close to a cuboid, and the housing 1 has a detachable rear cover or a detachable front cover.

[0035] The current detection module 2 is configured to detect the winding current of the motor 100. The specific type of the current detection module 2 can be set according to actual needs, and no limitation is imposed thereon.

[0036] The switch module 3 is configured to selectively conduct the power supply path of the motor 100. The specific type of the switch module 3 can be set according to actual needs, and no limitation is imposed thereon.

[0037] The processing module 4 is used to send an alarm signal according to the winding current and control the on / off of the switch module 3. Specifically, the processing module 4 compares and judges the winding current value with a preset current value. When the winding current value is less than the preset current value, the processing module 4 does not send an alarm signal and controls the switch module 3 to remain in the conducting state. When the winding current value is not less than the preset current value, the processing module 4 sends an alarm signal to prompt the operator to perform maintenance in a timely manner, and at the same time controls the switch module 3 to switch from the conducting state to the off state. Thus, through the automatic monitoring of the processing module 4, it is convenient for the operator to perform pre-inspection and troubleshoot potential motor 100 faults in a timely manner, improving the timeliness and accuracy of motor 100 fault determination, avoiding serious faults caused by small problems not being discovered in time, and at the same time reducing the workload of the operator.

[0038] Among them, the specific type of the processing module 4 can be set according to actual needs, and there is no limitation on this. By way of example, the processing module 4 can be a Central Processing Unit (CPU).

[0039] At the same time, compared with the thermal protection relay in the related embodiments, the alarm of this embodiment not only has a higher detection accuracy, but also the preset current value set during long-term use will not change, has higher stability, and the alarm of this embodiment is not affected by the external environmental temperature factor, has a higher detection accuracy, and continuously provides precise protection for the motor 100, reducing the risk of damage to the motor 100 caused by the failure of the thermal element.

[0040] Moreover, in the alarm of this embodiment, different preset current values can correspond to different motors 100. Therefore, the alarm can be applied to different motors 100 only by changing the preset current value, with stronger general ability and wider application range.

[0041] As Figure 1 shown, in some embodiments, the alarm further includes: a signal conversion module 5. The signal conversion module 5 is disposed in the housing 1, and the signal conversion module 5 is connected in series between the input end of the processing module 4 and the output end of the current detection module 2. The signal conversion module 5 is used to convert the winding current signal into a digital signal.

[0042] It can be understood that since the signal conversion module 5 is connected in series between the input end of the processing module 4 and the output end of the current detection module 2, the signal conversion module 5 can convert the winding current signal output by the current detection module 2 into a digital signal that the processing module 4 can process, so that the processing module 4 can send an alarm signal according to the winding current signal and control the on / off of the power supply path of the motor 100, thereby realizing the automatic monitoring of the motor 100 fault.

[0043] It should be noted that the signal conversion module 5 is used to convert the winding current signal into a digital signal. The specific type of the signal conversion module 5 can be set according to actual needs and is not limited in this regard.

[0044] As Figure 1 shown, in some embodiments, the signal conversion module 5 includes: a first conversion unit 51 and a second conversion unit 52. The first conversion unit 51 is disposed in the housing 1, and the input end of the first conversion unit 51 is connected to the output end of the current detection module 2. The first conversion unit 51 is used to convert the winding current signal into an analog signal. The second conversion unit 52 is disposed in the housing 1, and the input end of the second conversion unit 52 is connected to the output end of the first conversion unit 51. The output end of the second conversion unit 52 is connected to the input end of the processing module 4. The second conversion unit 52 is used to convert the analog signal into a digital signal.

[0045] It can be understood that since the input end of the first conversion unit 51 is connected to the output end of the current detection module 2 and the output end of the first conversion unit 51 is connected to the input end of the second conversion unit 52, the first conversion unit 51 can convert the winding current signal into an analog signal and send it to the second conversion unit 52. Since the output end of the second conversion unit 52 is connected to the input end of the processing module 4, the second conversion unit 52 can convert the analog signal into a digital signal and send it to the processing module 4.

[0046] Thus, through the cooperation of the first conversion unit 51 and the second conversion unit 52, the winding current signal output by the current detection module 2 can be converted into a digital signal that the processing module 4 can process, so that the processing module 4 can issue an alarm signal according to the winding current signal and control the on-off of the power supply path of the motor 100, thereby realizing the automatic monitoring of the motor 100 failure.

[0047] It should be noted that the first conversion unit 51 is used to convert the winding current signal into an analog signal. The specific type of the first conversion unit 51 can be set according to actual needs and is not limited in this regard. For example, the first conversion unit 51 can be an integrated circuit, a chip, etc. for conversion. The first conversion unit 51 converts the winding current signal collected by the current detection module 2 into an analog quantity signal of 4 mA - 20 mA.

[0048] The second conversion unit 52 is used to convert the analog signal into a digital signal. The specific type of the second conversion unit 52 can be set according to actual needs and is not limited in this regard. For example, the second conversion unit 52 can be an integrated circuit, a chip, etc. for conversion. For example: an analog-to-digital converter.

[0049] As Figure 1As shown, in some embodiments, the signal conversion module 5 further includes: an opto-isolation unit 53. The opto-isolation unit 53 is disposed in the housing 1, and the opto-isolation unit 53 is connected in series between the output end of the second conversion unit 52 and the input end of the processing module 4. The input end of the opto-isolation unit 53 is connected to the output end of the second conversion unit 52, and the output end of the opto-isolation unit 53 is connected to the input end of the processing module 4. The opto-isolation unit 53 is used for opto-isolation.

[0050] It can be understood that since the input end of the opto-isolation unit 53 is connected to the output end of the second conversion unit 52, and the output end of the opto-isolation unit 53 is connected to the input end of the processing module 4, the opto-isolation unit 53 can not only realize the signal transmission between the output end of the second conversion unit 52 and the input end of the processing module 4, but also realize opto-isolation, thereby preventing the pulse of the signal transmitted by the second conversion unit 52 from impacting the processing module 4, and further ensuring the stable operation of the processing module 4.

[0051] It should be noted that the opto-isolation unit 53 is used for opto-isolation. The specific type of the opto-isolation unit 53 can be set according to actual needs, and there is no limitation in this regard. By way of example, the opto-isolation unit 53 can be an integrated circuit, a chip, etc. for isolation, for example: an optocoupler.

[0052] As Figure 1 As shown, in some embodiments, the current detection module 2 includes: a DC current transformer 21 and / or an AC current transformer 22. The DC current transformer 21 is disposed in the housing 1, and the detection end of the DC current transformer 21 is connected to the winding of the DC motor 100. The output end of the DC current transformer 21 is connected to the input end of the processing module 4. The DC current transformer 21 is used for detecting the winding current of the DC motor 100. The AC current transformer 22 is disposed in the housing 1, and the detection end of the AC current transformer 22 is connected to the winding of the AC motor 100. The output end of the AC current transformer 22 is connected to the input end of the processing module 4. The AC current transformer 22 is used for detecting the winding current of the AC motor 100.

[0053] It can be understood that since the detection end of the DC current transformer 21 is connected to the winding of the DC motor 100, and the output end of the DC current transformer 21 is connected to the input end of the processing module 4, the DC current transformer 21 can detect the winding current of the DC motor 100 and send the winding current signal to the processing module 4, thereby realizing the automatic monitoring of the faults of the DC motor 100 by using the processing control of the processing module 4.

[0054] Since the detection end of the AC current transformer 22 is connected to the winding of the AC motor 100, and the output end of the AC current transformer 22 is connected to the input end of the processing module 4, the AC current transformer 22 can detect the winding current of the AC motor 100 and send the winding current signal to the processing module 4, so as to realize the automatic monitoring of the faults of the AC motor 100 by using the processing and control of the processing module 4.

[0055] Thus, through the cooperation of the DC current transformer 21 and the AC current transformer 22, the alarm can realize the automatic monitoring of different types of motor 100 faults, thereby effectively expanding the applicable range of the alarm and enhancing its versatility.

[0056] It should be noted that the DC current transformer 21 is used to detect the winding current of the DC motor 100, and the specific type of the DC current transformer 21 can be set according to actual needs, and no limitation is imposed thereon.

[0057] The AC current transformer 22 is used to detect the winding current of the AC motor 100, and the specific type of the AC current transformer 22 can be set according to actual needs, and no limitation is imposed thereon.

[0058] As Figure 2 shown, in some embodiments, the current detection module 2 further includes: a changeover switch 23, the changeover switch 23 is arranged on the housing 1, and the output end of the changeover switch 23 is connected to the input end of the processing module 4, and the changeover switch 23 is used to switch the working mode of the processing module 4; wherein, the working modes of the processing module 4 include: the DC motor 100 monitoring mode and the AC motor 100 monitoring mode.

[0059] It can be understood that since the output end of the changeover switch 23 is connected to the input end of the processing module 4, the changeover switch 23 can switch the working mode of the processing module 4, so that the processing module 4 can utilize the DC motor 100 monitoring mode and cooperate with the DC current transformer 21 to realize the automatic monitoring of the faults of the DC motor 100, and utilize the AC motor 100 monitoring mode and cooperate with the AC current transformer 22 to realize the automatic monitoring of the faults of the AC motor 100.

[0060] It should be noted that the changeover switch 23 is used to switch the working mode of the processing module 4. For example: when the alarm needs to monitor the DC motor 100, the processing module 4 switches to the DC motor 100 monitoring mode through the changeover switch 23; when the alarm needs to monitor the AC motor 100, the processing module 4 switches to the AC motor 100 monitoring mode through the changeover switch 23. The specific type of the changeover switch 23 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the changeover switch 23 is a rotary switch.

[0061] Among them, since the types of the DC motor 100 and the AC motor 100 are different, the processing module 4 should also have different comparison and judgment parameters, that is, the DC motor 100 monitoring mode and the AC motor 100 monitoring mode.

[0062] As Figure 1 and Figure 3 shown, in some embodiments, the alarm further includes: a temperature detection module 6, the temperature detection module 6 is disposed in the housing 1, and the detection end of the temperature detection module 6 is connected to the motor 100, and the output end of the temperature detection module 6 is connected to the input end of the processing module 4, and the temperature detection module 6 is used to detect the temperature of the motor 100; wherein, the processing module 4 is used to send an alarm signal according to the temperature of the motor 100 and control the on-off of the switch module 3.

[0063] It can be understood that since the detection end of the temperature detection module 6 is connected to the motor 100 and the output end of the temperature detection module 6 is connected to the input end of the processing module 4, the temperature detection module 6 can detect the temperature of the motor 100 and send the temperature signal to the processing module 4, so as to cooperate with the switch module 3, so that the processing module 4 can send an alarm signal according to the temperature of the motor 100 and control the on-off of the switch module 3, thereby realizing the automatic monitoring of the motor 100 failure. Thus, using the automatic motor 100 monitoring method, not only the operation is more convenient, but also the accuracy is higher, thus effectively improving the detection efficiency and quality of the motor 100 failure. And the automatic monitoring method has stronger timeliness, so as to be able to process the motor 100 failure in time, thereby avoiding more serious safety accidents.

[0064] It should be noted that the temperature detection module 6 is used to detect the temperature of the motor 100, and the specific type of the temperature detection module 6 can be set according to actual needs, and there is no limitation thereto. By way of example, the temperature detection module 6 can be a temperature sensor, and the detection end of the temperature detection module 6 is disposed outside or inside the motor 100.

[0065] Specifically, the processing module 4 compares and judges the temperature value with the preset temperature value. When the temperature value is less than the preset temperature value, the processing module 4 does not send an alarm signal and controls the switch module 3 to remain in the conducting state. When the temperature value is not less than the preset temperature value, the processing module 4 sends an alarm signal to prompt the operator to perform maintenance in time, and at the same time controls the switch module 3 to switch from the conducting state to the off state.

[0066] As Figure 2As shown, in some embodiments, the alarm further includes: a touch screen 7 and / or a host computer (not shown in the figure). The touch screen 7 is disposed on the housing 1, and the communication end of the touch screen 7 is connected to the communication end of the processing module 4. The touch screen 7 is configured to display alarm information according to the alarm signal and output a control signal to the processing module 4. The host computer is disposed away from the housing 1, and the communication end of the host computer is connected to the communication end of the processing module 4. The host computer is configured to display alarm information according to the alarm signal and output a control signal to the processing module 4.

[0067] It can be understood that since the communication end of the touch screen 7 is connected to the communication end of the processing module 4, the touch screen 7 can display alarm information according to the alarm signal, thereby facilitating on-site intuitive prompting for the operator to promptly handle the motor 100 failure. At the same time, the touch screen 7 can output a control signal to the processing module 4, thereby facilitating the operator to locally control parameters in the processing module 4. Thus, through the setting of the touch screen 7, the use of the alarm is made more flexible and convenient.

[0068] Since the communication end of the host computer is connected to the communication end of the processing module 4, the host computer can display alarm information according to the alarm signal, thereby facilitating remote prompting for the operator to promptly handle the motor 100 failure. At the same time, the host computer can output a control signal to the processing module 4, thereby facilitating the operator to remotely control parameters in the processing module 4. Thus, through the setting of the host computer, the use of the alarm is made more flexible and convenient.

[0069] It should be noted that the touch screen 7 and the host computer are respectively configured to display alarm information according to the alarm signal and output a control signal to the processing module 4. The specific types of the touch screen 7 and the host computer can be set according to actual needs, and no limitation is imposed thereon.

[0070] Among them, the touch screen 7 realizes visual parameter setting and alarm information display. Specifically, the touch screen 7 can set information such as the rated power, current, and torque of the monitored motor 100, and display information such as the alarm type and alarm value.

[0071] The alarm is provided with a communication interface connected to the processing module 4. By way of example, the alarm is provided with a NET Ethernet interface, and the processing module 4 uses the NET Ethernet interface to communicate with the programming computer during the design stage; the alarm is provided with an RS485 interface, and the processing module 4 uses the RS485 interface to implement communication interaction with the host computer; the alarm is provided with a COM interface, and the processing module 4 uses the COM interface to implement communication interaction with the touch screen 7.

[0072] In the alarm of this embodiment, since the processing module 4 transmits signals to the host computer in a remote communication manner, it can be applied to remote scenarios, such as: the protection and monitoring of the motors 100 used in facilities with complex working environments such as outdoor water pump houses, rooftop ventilation fans, basement hydraulic stations, ventilation facilities for harmful gases in pits, etc., and facilities with wide operation areas such as photovoltaic and wind farms.

[0073] As Figure 1 and Figure 3 shown, in some embodiments, the switch module 3 includes: a middle relay. The coil 31 of the middle relay is arranged in the housing 1, and the contact 32 of the middle relay is connected in series on the power supply path of the motor 100. The power supply end of the coil 31 of the middle relay is connected to the output end of the processing module 4; wherein, the processing module 4 is used to control the energization state of the coil 31 of the middle relay according to the winding current, so as to control the on-off of the contact 32 of the middle relay.

[0074] It can be understood that since the power supply end of the coil 31 of the middle relay is connected to the output end of the processing module 4, and the contact 32 of the middle relay is connected in series on the power supply path of the motor 100, the processing module 4 can control the energization state of the coil 31 of the middle relay according to the winding current, so as to control the on-off of the contact 32 of the middle relay according to the energization state of the coil 31, and further realize the on-off control of the power supply path of the motor 100.

[0075] It should be noted that the processing module 4 outputs the control signal in the form of a switch quantity by using the middle relay. The middle relay has a linked coil 31 and contact 32. The contact 32 can be a normally open contact or a normally closed contact. For example, when the coil 31 of the middle relay is energized, the normally open contact of the middle relay is turned on to ensure the energized operation of the motor 100. When the coil 31 of the middle relay is de-energized, the normally open contact of the middle relay is turned off, so that the motor 100 is de-energized and enters the maintenance state.

[0076] As Figure 1 shown, in some embodiments, the alarm further includes: a power supply module 8. The power supply module 8 is arranged in the housing 1, and the power supply end of the power supply module 8 is connected to the power supply end of the external power supply. The power supply end of the power supply module 8 is connected to the power supply end of the processing module 4.

[0077] It can be understood that since the power supply end of the power supply module 8 is connected to the power supply end of the external power supply, and the power supply end of the power supply module 8 is connected to the power supply end of the processing module 4, the power supply module 8 can convert the electric energy supplied by the external power supply and transmit it to the processing module 4, thus ensuring the stable operation of the processing module 4, and further ensuring the stable monitoring of the motor 100 failure by the alarm.

[0078] It should be noted that the specific type of the power supply module 8 can be set according to actual needs, and there is no limitation in this regard. By way of example, the power supply module 8 can be a switching power supply.

[0079] As Figure 2 shown, in some embodiments, the alarm further includes: an indicator light 9 and / or a power switch 10. The indicator light 9 is disposed on the housing 1, and the power supply terminal of the indicator light 9 is connected to the power supply terminal of the power supply module 8. The indicator light 9 is used to emit light when the power supply module 8 supplies power. The power switch 10 is disposed on the housing 1, and the power switch 10 is connected in series between the power supply terminal of the power supply module 8 and the power supply terminal of an external power supply. The power switch 10 is used to selectively conduct the path between the power supply module 8 and the external power supply.

[0080] It can be understood that since the power supply terminal of the indicator light 9 is connected to the power supply terminal of the power supply module 8, the indicator light 9 can indicate the power supply state of the power supply module 8, making the use of the alarm more convenient.

[0081] Since the power switch 10 is connected in series between the power supply terminal of the power supply module 8 and the power supply terminal of the external power supply, the power switch 10 can control the on / off of the path between the power supply module 8 and the external power supply, thereby making the use of the alarm more flexible and convenient.

[0082] It should be noted that the indicator light 9 is used to emit light when the power supply module 8 supplies power. The specific type of the indicator light 9 can be set according to actual needs, and there is no limitation in this regard.

[0083] The power switch 10 is used to selectively conduct the path between the power supply module 8 and the external power supply. The specific type of the power switch 10 can be set according to actual needs, and there is no limitation in this regard.

[0084] Thus, the alarm of this embodiment has a compact and simple structure, strong applicability, and low cost, and has extremely strong adaptability and application in the electrical field.

[0085] In the description of the present disclosure, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0086] Any process or method description, whether in a flowchart or otherwise described herein, can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations where functions may be executed in a substantially simultaneous manner or in an order opposite to that shown or discussed, depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure pertain.

[0087] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0088] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A motor fault monitoring alarm, characterized in that: include: case; A current detection module, the current detection module is arranged in the housing, and a detection end of the current detection module is connected to the winding of the motor, and the current detection module is used to detect the winding current of the motor; A switch module, the switch module is connected in series to the power supply path of the motor, and the switch module is used to selectively conduct the power supply path of the motor; A processing module, wherein the processing module is arranged in the shell, and the input end of the processing module is connected to the output end of the current detection module, and the output end of the processing module is connected to the input end of the switch module, and the processing module is used to send an alarm signal according to the winding current and control the on and off of the switch module.

2. The motor fault monitoring alarm according to claim 1, characterized in that: The alarm also includes: A signal conversion module is disposed in the housing and is connected in series between the input end of the processing module and the output end of the current detection module, and is used to convert the winding current signal into a digital signal.

3. The motor fault monitoring alarm according to claim 2, characterized in that: The signal conversion module comprises: A first conversion unit, wherein the first conversion unit is disposed in the housing, and an input end of the first conversion unit is connected to an output end of the current detection module, and the first conversion unit is used to convert the winding current signal into an analog signal; A second conversion unit, wherein the second conversion unit is disposed in the shell, and an input end of the second conversion unit is connected to an output end of the first conversion unit, an output end of the second conversion unit is connected to an input end of the processing module, and the second conversion unit is used to convert the analog signal into the digital signal.

4. The motor fault monitoring alarm according to claim 3, characterized in that: The signal conversion module also includes: A photoelectric isolation unit, wherein the photoelectric isolation unit is arranged in the shell, and the photoelectric isolation unit is connected in series between the output end of the second conversion unit and the input end of the processing module, the input end of the photoelectric isolation unit is connected to the output end of the second conversion unit, the output end of the photoelectric isolation unit is connected to the input end of the processing module, and the photoelectric isolation unit is used for photoelectric isolation.

5. The motor fault monitoring alarm according to claim 1, characterized in that: The current detection module comprises: A DC current transformer, the DC current transformer is arranged in the housing, and a detection end of the DC current transformer is connected to a winding of the DC motor, and the DC current transformer is used to detect the winding current of the DC motor; and / or An AC current transformer is arranged in the shell, and a detection end of the AC current transformer is connected to the winding of the AC motor. The AC current transformer is used to detect the winding current of the AC motor.

6. The motor fault monitoring alarm according to claim 5, characterized in that: The current detection module also includes: A switching switch, wherein the switching switch is arranged on the housing, and an output end of the switching switch is connected to an input end of the processing module, and the switching switch is used to switch a working mode of the processing module; Wherein, the working modes of the processing module include: a DC motor monitoring mode and an AC motor monitoring mode.

7. The motor fault monitoring alarm according to claim 1, characterized in that: The alarm also includes: A temperature detection module is arranged in the shell, and a detection end of the temperature detection module is connected to the motor, and an output end of the temperature detection module is connected to an input end of the processing module, and the temperature detection module is used to detect the temperature of the motor.

8. The motor fault monitoring alarm according to claim 1, characterized in that: The alarm also includes: A touch screen, wherein the touch screen is arranged on the housing, and a communication terminal of the touch screen is connected to a communication terminal of the processing module, and the touch screen is used to display alarm information according to the alarm signal, and output a control signal to the processing module; and / or A host computer, the host computer is arranged away from the housing, and a communication terminal of the host computer is connected to a communication terminal of the processing module, and the host computer is used to display alarm information according to the alarm signal, and output a control signal to the processing module; Wherein, the processing module is used to send out an alarm signal according to the temperature of the motor and control the on and off of the switch module.

9. The motor fault monitoring alarm according to claim 1, characterized in that: The switch module comprises: An intermediate relay, wherein the coil of the intermediate relay is arranged in the housing, and the contacts of the intermediate relay are connected in series to the power supply path of the motor, and the coil power supply end of the intermediate relay is connected to the output end of the processing module; The processing module is used to control the energizing state of the intermediate relay coil according to the winding current, so as to control the on and off of the intermediate relay contacts.

10. The motor fault monitoring alarm according to claim 1, characterized in that: The alarm device further comprises: a power supply module, the power supply module is arranged in the housing, and a power supply end of the power supply module is connected to a power supply end of an external power supply, and a power supply end of the power supply module is connected to a power supply end of the processing module; Wherein, the alarm also includes: An indicator light, the indicator light being arranged on the housing, and the power supply end of the indicator light being connected to the power supply end of the power module, the indicator light being used to emit an indicator light when the power module supplies power; and / or A power switch is arranged on the housing and is connected in series between the power supply end of the power module and the power supply end of the external power supply, and is used to selectively conduct the path between the power module and the external power supply.

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