CN202008594U - Multi-motor fault monitoring device - Google Patents
Multi-motor fault monitoring device Download PDFInfo
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- CN202008594U CN202008594U CN2010206213390U CN201020621339U CN202008594U CN 202008594 U CN202008594 U CN 202008594U CN 2010206213390 U CN2010206213390 U CN 2010206213390U CN 201020621339 U CN201020621339 U CN 201020621339U CN 202008594 U CN202008594 U CN 202008594U
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Abstract
The utility model relates to a multi-motor fault monitoring device which is used for fixing a single-speed motor or a common-zero multi-speed multi-winding motor. The multi-motor operating state monitoring device comprises a CPU (central processing unit) module and a motor operating state detection module; the motor operating state detection module at least comprises a motor fault detection circuit; each motor fault detection circuit comprises two optocoupler isolating modules; each optocoupler isolating module is connected with two input signals; one input signal is connected with the power supply end Vd of some coil winding of a motor and accessed to one input end of each of the two optocoupler isolating modules respectively through a current limiting resistor and a one-way protecting diode, and the other input end of each of the two optocoupler isolating modules is connected with a zero line and a phase line respectively; an output end signal is accessed to an I/O (input/output) interface of the CPU module or in output connection with a group of I/O interfaces of a singlechip in the CPU module after passing through an analog/digital conversion circuit. The multi-motor operating state monitoring device has simple structure, low cost and high safety, can accurately and reliably judge the motor fault, and is easy to realize.
Description
Technical field
The utility model relates to a kind of electrical fault monitoring device, particularly relates to a kind of multiple electric motors fault monitoring device, is applied to fixedly single-speed motor or totally zero many grades of fast multiwinding machines, adopts photoelectric isolation technology that the multiple electric motors fault is monitored.
Background technology
Modern industry, agricultural or even commercial field, the use of motor is more and more frequent, for industrial and agricultural production and office automation are provided convenience, for development and national economy has been made indelible contribution.But development along with every profession and trade automated control technologies such as chemical industry, oil and electronics, auto industrys; product quality and production safety have proposed higher technical requirement to control procedure and opertaing device; to implement reliable safety precautions to production or equipment simultaneously, also must reach higher precision the fault detect of equipment and the judgement of running status.For example,, control the prerequisite that all is absolutely necessary for its energy consumption measurement and enforcement as rates ground to the state recognition of fan coil and industrial many grades of speed motors in the central air conditioner field; And for the safeguard protection of motor and equipment; how to realize the accurate judgement of motor operating state and fault type; how electric motor protective device is taked further to move to play crucial effects, and this relates to the problems such as serviceable life of safety in production and equipment.But the prior motor status identification means, the technical scheme circuit relative complex of employing, equipment cost is higher, and is accurate inadequately to the detection of motor operating state.
Technical scheme and the Related product that detects about motor operating state in the past generally lacked the detection and the judgement of fault to the running status of motor, therefore produced the blind area of some controls and monitoring, even omission, false retrieval so that cause unnecessary loss.For example in the central air conditioner field, fan coil itself is exactly many grades of speed motors, in central air conditioner system detection and metering system, the monitoring problem that just has fan coil, though can realize some running status functions according to technology in the past, but when opening circuit with indoor equipment appears in system, fault such as power down or artificial destruction or when removing situation such as detection line, because there is the monitoring blind area in system, and enter the inspection of user's family relatively the difficulty and don't gear to actual circumstances, therefore certainly will cause the supervision blind area as can not and reporting to the police, even phenomenon occurs usurping by monitoring of equipment.This it serves to show the importance that in time detects system failure equipment and in time report to the police and handle, resolution system malfunction monitoring problem and commodity resource stealing problem rapidly.This class electrical fault detects problem and exists equally in the use of industrial motor.The industrial control automation degree is more and more higher now, mechanics of communication is more and more flourishing, monitoring to equipment also proposes higher requirement, if the fault of problem motor can not in time monitor and obtain to handle, may cause bigger potential safety hazard, even security incident appears, cause heavy losses for the people masses' the security of the lives and property.
The utility model content
The utility model proposes a kind of multiple electric motors failure detector at the prior art deficiency, can realize accurately, reliably that the running status of multiple electric motors detects and fault judgement.
The technical scheme that the utility model adopted:
A kind of multiple electric motors fault monitoring device, contain the CPU module, the motor operating state detection module, described CPU module contains single-chip microcomputer and peripheral circuit, described motor operating state detection module contains an electrical fault testing circuit at least, described each electrical fault testing circuit comprises two light-coupled isolation modules, each light-coupled isolation module connects the two-way input signal, wherein one road input signal connects the power end Vd of certain coil winding of motor, and respectively by an input end of current-limiting resistance and two light-coupled isolation modules of unidirectional protection diode access, another input end of two light-coupled isolation modules connects zero line and phase line respectively; Described output end signal inserts the I/O mouth of CPU module or connects one group of I/O mouth of single-chip microcomputer in the CPU module by output behind mould/number conversion circuit.
Described multiple electric motors fault monitoring device, the quantity of the electrical fault testing circuit that the motor operating state detection module comprises, be complementary corresponding with the I/O port number of single-chip microcomputer in the CPU module, the electrical fault testing circuit output signal of corresponding many grades of speed inserts the CPU module after mould/number conversion, the built-in recognizer of single-chip microcomputer in the described CPU module, the state of judgement multiple electric motors.
Described multiple electric motors fault monitoring device, the output terminal of electrical fault testing circuit promptly the output terminal of two light-coupled isolation modules be connected with filter circuit of pressure-stabilizing respectively, be connected with communication module with the CPU module, the corresponding corresponding function port that connects communication module of the serial communication interface of single-chip microcomputer in the CPU module; Communication module adopts RS-485 bus communication mode, perhaps adopts CAN bus or BUS bus communication mode, perhaps adopts wireless communication mode.
Useful good effect of the present utility model:
1, the utility model multiple electric motors failure detector is simple in structure, and is with low cost; To the accuracy of judgement of electrical fault, reliable, safe, realize easily.Show the voltage difference of the coil winding of motor for a single-speed motor or the different running statuses of many grades of speed motors, only need to detect the magnitude of voltage of some coil winding, utilize the output voltage of this winding of motor, determine the running status of motor through the output valve of testing circuit.Maintenance, repair, debugging conveniently are applied to improve product price ratio and competitive power towards the equipment of motor detection, help the popularization of product.
2, the utility model multiple electric motors failure detector, testing circuit adopt the optocoupler module to realize the strong and weak electricity isolation, realize the fault judgement and the state recognition of motor fast according to the motor coil winding voltage.It is simple, safe and reliable that testing circuit has, the characteristics that practicality is high, the security and stability that have improved the equipment of device.The display result of actual measurement shows that the testing circuit working stability is reliable, and electrical fault detects rapidly accurately, is enough to satisfy the requirement of the detection of general device.
3, the utility model multiple electric motors failure detector, include a plurality of electrical fault testing circuits, adopt photoelectric isolation technology, the cost performance height, testing circuit is simple and reliable, can realize that the multiple electric motors running status detects and fault judgement, help the integrated on a large scale of equipment, reduce application cost.Can realize remote monitoring and management by communication module, help to improve the efficiency of management.
Description of drawings
Fig. 1: the utility model multiple electric motors failure detector CPU modular circuit schematic diagram;
Fig. 2: the utility model multiple electric motors failure detector communication module circuit theory diagrams;
Fig. 3: the utility model multiple electric motors failure detector electrical fault testing circuit schematic diagram;
Fig. 4: the utility model multiple electric motors failure detector analog-to-digital conversion module;
Fig. 5: the utility model multiple electric motors failure detector power module;
Fig. 6: the utility model multiple electric motors failure detector BUS bus uplink communication module.
Embodiment
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3, the utility model multiple electric motors fault monitoring device, contain the CPU module, the motor operating state detection module, described CPU module contains single-chip microcomputer and peripheral circuit, described motor operating state detection module contains an electrical fault testing circuit at least, it is characterized in that: described each electrical fault testing circuit comprises two light-coupled isolation modules, each light-coupled isolation module connects the two-way input signal, wherein one road input signal connects the power end Vd of certain coil winding of motor, and respectively by an input end of current-limiting resistance and two light-coupled isolation modules of unidirectional protection diode access, another input end of two light-coupled isolation modules connects zero line and phase line respectively; The output terminal of the described electrical fault testing circuit i.e. output terminal of two light-coupled isolation modules is connected with filter circuit of pressure-stabilizing respectively, and described output end signal inserts the I/O mouth of CPU module or connects one group of I/O mouth of single-chip microcomputer in the CPU module by output behind mould/number conversion circuit.
Described multiple electric motors fault monitoring device, the quantity of the electrical fault testing circuit that the motor operating state detection module comprises, be complementary corresponding with the I/O port number of single-chip microcomputer in the CPU module, be that its number of motors that can detect can be according to the maximum capacity of model expansion of the CPU that adopts, for example 51 series can be held 10 ports, can increase the port number of some simultaneously by expansion from CPU.The electrical fault testing circuit output signal of corresponding many grades of speed inserts the CPU module after mould/number conversion, the built-in recognizer of single-chip microcomputer in the described CPU module, the state of judgement multiple electric motors.
Be connected with communication module with the CPU module, the corresponding corresponding function port that connects communication module of the serial communication interface of single-chip microcomputer in the CPU module; Communication module adopts RS-485 bus communication mode, perhaps adopts CAN bus or BUS bus communication mode, perhaps adopts wireless communication mode.By communication module, can realize the remote centralized control and the management of motor, improve the level of management.
U1 is CPU among Fig. 1, and U3 is a RS485 bus communication chip among Fig. 2.Central processing unit in the CPU module (CPU) can adopt 8, and 16,32 or the like, for example AT89S52, P89C54BP, MC68HC11A8, MSP430F43 etc. comprise in the compatible chip of release any one; The RXD of CPU, TXD are connected with corresponding interface RXD, the TXD of uplink communication module respectively, and device connects host computer by communication module.
Fig. 5 is the power module circuitry schematic diagram, and wherein U5 is a three terminal regulator.
Adopt an electrical fault testing circuit to detect the magnitude of voltage of a some coil winding of motor, according to the situation of this magnitude of voltage or switching value output, detect the running status of this motor, determine whether the motor operation is normal, malfunction, halted state and the running status of identification motor.When the testing circuit output state is F1F2=01, represent that this motor is in halted state.When the testing circuit output state is that F1F2=10 represents that this machine operation is normal, during many grades of speed motors, output state is F1F2=11, then represents with different gear operations in this way.When the testing circuit output state is F1F2=00, represent this motor device fault.This module adopts optocoupler to realize the strong and weak electricity isolation, the stable and safety of protection system.The outside input of module comprises the connection a certain coil winding of motor (Vd), zero line (AC220N) and phase line (AC220L), and isolation detection output terminal (F1) connects the I/O interface of core CPU module CPU.
Embodiment two: referring to Fig. 1, Fig. 2, Fig. 4, Fig. 5.The difference of present embodiment and embodiment one is: motor detects output signal will insert single-chip microcomputer in the CPU module after mould/number conversion one group of I/O mouth, single-chip microcomputer plug-in in the described CPU module is judged the state of multiple electric motors by calculating the analog to digital conversion value.U7 is the A/D conversion chip in analog-to-digital conversion module, can adopt all kinds of serial parallel interfaces general on the market and many A/D conversion chips of single channel, precision more than eight as AD1671, AD7824, ADC0831, TLC1549, TLC1543, MAX120, in the compatible chip of MAX180 and follow-up release thereof any one, the interface ADDOUT of module, ADCLK, ADADDR, ADCS respectively with the corresponding interface ADDOUT of core CPU, ADCLK, ADADDR, ADCS connects, these interfaces can be defined arbitrarily by software, can realize the collection of the sampled voltage of multiple electric motors coil pipe.
Embodiment three: referring to Fig. 1, Fig. 3, Fig. 5, Fig. 6.The difference of present embodiment and embodiment one is: communication module adopts the BUS bus communication module, and the RXD of CPU, TXD are connected with RXD_Y, the TXD_Y correspondence of uplink communication module among Fig. 6 respectively among Fig. 1.
Claims (3)
1. multiple electric motors fault monitoring device, contain the CPU module, the motor operating state detection module, described CPU module contains single-chip microcomputer and peripheral circuit, described motor operating state detection module contains an electrical fault testing circuit at least, it is characterized in that: described each electrical fault testing circuit comprises two light-coupled isolation modules, each light-coupled isolation module connects the two-way input signal, wherein one road input signal connects the power end Vd of certain coil winding of motor, and respectively by an input end of current-limiting resistance and two light-coupled isolation modules of unidirectional protection diode access, another input end of two light-coupled isolation modules connects zero line and phase line respectively; Described output end signal inserts the I/O mouth of CPU module or connects one group of I/O mouth of single-chip microcomputer in the CPU module by output behind mould/number conversion circuit.
2. multiple electric motors fault monitoring device according to claim 1, it is characterized in that: the quantity of the electrical fault testing circuit that the motor operating state detection module comprises, be complementary with the I/O port number of single-chip microcomputer in the CPU module, the electrical fault testing circuit output signal of corresponding many grades of speed inserts the CPU module after mould/number conversion, the built-in recognizer of single-chip microcomputer in the described CPU module, the state of judgement multiple electric motors.
3. multiple electric motors fault monitoring device according to claim 1 and 2, it is characterized in that: the output terminal of the described electrical fault testing circuit i.e. output terminal of two light-coupled isolation modules is connected with filter circuit of pressure-stabilizing respectively, be connected with communication module with the CPU module, the corresponding corresponding function port that connects communication module of the serial communication interface of single-chip microcomputer in the CPU module; Communication module adopts RS-485 bus communication mode, perhaps adopts CAN bus or BUS bus communication mode, perhaps adopts wireless communication mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206213390U CN202008594U (en) | 2010-11-24 | 2010-11-24 | Multi-motor fault monitoring device |
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| CN2010206213390U CN202008594U (en) | 2010-11-24 | 2010-11-24 | Multi-motor fault monitoring device |
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| CN202008594U true CN202008594U (en) | 2011-10-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572585A (en) * | 2014-10-30 | 2016-05-11 | 德尔福技术有限公司 | System and method of electric motor fault detection |
| CN106324364A (en) * | 2016-10-13 | 2017-01-11 | 曲靖乐天科技有限责任公司 | Detecting and analyzing method for DC micromotor product and system thereof |
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
| CN112198860A (en) * | 2020-09-11 | 2021-01-08 | 中国航空工业集团公司成都飞机设计研究所 | Electric steering engine monitoring method |
| CN112230142A (en) * | 2020-09-22 | 2021-01-15 | 厦门芯阳科技股份有限公司 | Alternating current motor fault detection circuit |
-
2010
- 2010-11-24 CN CN2010206213390U patent/CN202008594U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572585A (en) * | 2014-10-30 | 2016-05-11 | 德尔福技术有限公司 | System and method of electric motor fault detection |
| CN106324364A (en) * | 2016-10-13 | 2017-01-11 | 曲靖乐天科技有限责任公司 | Detecting and analyzing method for DC micromotor product and system thereof |
| CN106324364B (en) * | 2016-10-13 | 2019-04-23 | 曲靖乐天科技有限责任公司 | A kind of determination method and system of direct current micromotor product |
| CN111123095A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
| CN111123095B (en) * | 2018-10-31 | 2022-09-27 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
| CN112198860A (en) * | 2020-09-11 | 2021-01-08 | 中国航空工业集团公司成都飞机设计研究所 | Electric steering engine monitoring method |
| CN112230142A (en) * | 2020-09-22 | 2021-01-15 | 厦门芯阳科技股份有限公司 | Alternating current motor fault detection circuit |
| CN112230142B (en) * | 2020-09-22 | 2023-12-12 | 厦门芯阳科技股份有限公司 | Alternating current motor fault detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHENGZHOU CHUNQUAN ENERGY-SAVING CO., LTD. Free format text: FORMER NAME: CHUNQUAN NUANTONG ENERGY SAVING EQUIPMENT CO., LTD., ZHENGZHOU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Bamboo hi tech Industrial Development Zone, Henan province Zhengzhou city 6 street 450001 No. 863 Software Park Patentee after: ZHENGZHOU CHUNQUAN ENERGY-SAVING CO., LTD. Address before: Bamboo hi tech Industrial Development Zone, Henan province Zhengzhou city 6 street 450001 No. 863 Software Park Patentee before: Zhengzhou Chunquan HVAC Energy-Saving Equipment Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20161124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |