CN101414803B - Method and apparatus for recognizing multi-speed motor gear based on voltage mutual inductance technology - Google Patents
Method and apparatus for recognizing multi-speed motor gear based on voltage mutual inductance technology Download PDFInfo
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Abstract
The invention relates to a multi-speed motor gear recognition method and a device thereof, in particular to a multi-speed motor gear recognition method based on voltage mutual-inductance technology and a device thereof; the method and the device can be applied to detecting the operating condition of co-zero multi-winding multi-speed motors such as a central air conditioner blower pipe coil. In the multi-speed motor gear recognition method based on the voltage mutual-inductance technology and the device thereof of the invention, different voltages are obtained according to the voltage mutual inductance characteristic among motor winding coils by measuring the voltage at the two ends of one known fixed gear drive coil; then by comparing the measured known fixed gear voltage with input standard voltage, the operating conditions including the stop condition and the operating multi-speed motor are recognized. In the multi-speed motor gear recognition method based on voltage mutual-inductance technology and the device thereof of the invention, a detection circuit for realizing voltage collection has simple structure, high safety and practicability. The installation and use are convenient, thus being capable of realizing the multi-speed motor gear recognition safely and reliably.
Description
One, technical field: the present invention relates to a kind of multi-speed motor gear recognition methods and device, particularly relate to a kind of multi-speed motor gear recognition methods and device based on voltage mutual inductance technology.Be applied to totally zero many grades of fast multiwinding machines, as the detection of the running status of central air-conditioning third gear speed fan coil.
Two, background technology: along with the continuous progress of society's science and technology, chemical industry, oil and electronics, auto industry have realized the automation control of production process already, for development and national economy has been made indelible contribution.Yet for family and civilian cause, the long-range charging of water, electricity, gas, heat and kilowatt meter reading-out system are not also popularized, and some still is at the early-stage.Along with further developing of social reform opening, market economy, in order to realize the commercialization of more voluminous industry, for fair, just angle, also for environmental protection and purpose of energy saving, present use central air-conditioning is carried out the expenses standard and the system of heating and refrigeration and reforms, arrived must row can not stage.Charging system and standard for relevant industries and field are reformed, and relevant technologies personnel have carried out deep practice and exploring.In any case but, to state recognition, control the prerequisite step that all is absolutely necessary for its energy consumption measurement with as the state-detection and the enforcement of rates ground such as central air-conditioning fan coil and industrial many grades of speed motors.Industry Control realizes that the speed of motor detects the equipment that reaches with the computer communication and is mostly to adopt rotary encoder at present, utilize the method for phase difference and pulse numeration, this method is inapplicable for the speed state identification of central air-conditioning fan coil obviously, can't implement.
For centralized monitor, computer management and information-based processing of realizing central air-conditioning fan coil running status, this case applicant has proposed a kind of many grades of speed motor status identification means previously, be used for the running status of many grades of speed motors is discerned, and make it to realize remote monitoring and and computer communication.Its technical scheme that adopts is by comparison circuit, and spacing output circuit is realized the identification output of many grades of speed motor states, and the reference voltage of comparison circuit is taken from the working standard power supply, and comparative voltage is taken from the power input of many grades of each grades of speed motor.But the weak point of its existence is: 1, circuit relative complex is an example with the three-speed motor, and the detection of each motor needs three the tunnel to detect, and collect the voltage signal of high, medium and low shelves, so the relative trouble of wiring board maintenance, and cost is higher; 2, use inconvenience, construction are complicated, and single motor will take nearly five collection lines, the construction material waste, and cost is higher; 3, single motor takies the more of hardware resource (the I/O mouth of CPU etc.), so the degree of integration of equipment is low, and it is few that individual equipment can detect number of motors.Detect if be applied to many grades of more speed motor running statuses, above weak point is more obvious.Therefore be necessary to design a kind of more advanced, easy to use, simple in structure recognition methods of many gears motor operating state and device.
Three, summary of the invention:
The present invention is directed to the prior art deficiency, propose a kind of brand-new multi-speed motor gear recognition methods and device based on voltage mutual inductance technology, simple in structure, range state identification that can many grades of speed motors of safe and reliable realization is installed, easy to use.
The technical solution adopted in the present invention:
A kind of multi-speed motor gear recognition methods based on voltage mutual inductance technology, for adopting the totally zero multitap many grades of speed motors of winding, how many different rotational speed regulation that realize different gears with the winding coil number of turn, between different gears because the difference of the drive coil number of turn, the mutual voltage value of the drive coil of arbitrary gear is also different, described multi-speed motor gear recognition methods, only by measuring the magnitude of voltage at wherein some known fixed gear drive coils two ends, obtain different magnitudes of voltage according to mutual induction of voltage characteristic between the motor-driven coil then, compare by the voltage of the known fixed gear that will measure and the normal voltage of input, identification is also determined the electronic running status of these many grades of speed, comprises halted state and the gear that is moving.
Described multi-speed motor gear recognition methods, for many grades of speed motors, at first only measure the voltage at one of them gear drive coil two ends by voltage detecting circuit, the status recognition of this testing circuit is a switching value, when detected state when voltage is arranged, determine that promptly many grades of speed motors are in running status; When detected state is no-voltage, determine that promptly many grades of speed motors are halted state.
Described multi-speed motor gear recognition methods, magnitude of voltage when moving with lowest gear is a reference voltage, only measure the real-time voltage value U of many grades of speed motor lowest gear drive coils, number of turn ratio characterisitic parameter according to different gear drive coils of motor and lowest gear drive coil, based on voltage mutual inductance technology, low-grade location drive coil real-time voltage value U is with the different grade time variant voltage values that present of operational taps, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi〉Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when real-time collection voltage U＜V1, judge that then motor moves with lowest gear; When real-time collection voltage U meets Vi-1＜U＜Vi, then decidable its move with the i gear; When real-time collection voltage U meets U〉during Vi, then decidable its with the most high-grade speed operation.For example, a three-speed motor, with low grade, middle-grade when respectively, during high-grade operation, it is that voltage is arranged is the electric motor starting state that voltage detecting circuit detects.Getting low-grade location is the stationary monitoring point, by designing requirement adjusting device parameter, then can obtain three different magnitude of voltage U, corresponding with the high, normal, basic gear of motor respectively, in conjunction with the company voltage jump value V1, the V2 that are provided with, and V2 V1.When gathering voltage is U〉the V2 situation is for high-grade, is V2 when gathering voltage〉U〉the V1 situation is middle-grade, is V1 when gathering voltage〉the U situation is low-grade.During the motor halted state,, can determine the motor halted state because voltage detecting circuit detects no-voltage.
Described multi-speed motor gear recognition methods, magnitude of voltage during with the most high-grade operation is a reference voltage, only measure the real-time voltage U value of the high tap position drive coil of motor, according to the number of turn ratio characterisitic parameter of the different gear drive coils of motor with high tap position drive coil, based on voltage mutual inductance technology, high tap position drive coil real-time voltage U is with the different grade time variant voltage values that present of operation shelves speed, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi〉Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when real-time collection voltage U meets U＜V1, then decidable its with the most high-grade speed operation; When real-time collection voltage U meets Vi-1＜U＜Vi, then decidable its with the operation of n+1-i shelves speed; When real-time collection voltage U meets U〉during Vi, then decidable its with the operation of deep low gear speed.
A kind of multi-speed motor gear recognition device of realizing multi-speed motor gear recognition methods as mentioned above, contain the core CPU module, described core CPU module contains single-chip microcomputer and peripheral circuit, contain voltage acquisition module, gather the drive coil operating voltage of some gears of many grades of speed motors in real time, detectable voltage signals inserts the core CPU module after mould/number conversion, the current running status and the gear of many grades of speed motors are judged and discerned to the built-in multi-speed motor gear recognizer based on voltage mutual inductance technology of described core CPU module.
Described multi-speed motor gear recognition device; voltage acquisition module contains voltage detecting circuit; the input of voltage detecting circuit connects the drive coil operating voltage input of some gears; record voltage signal and be divided into two-way inserts the light-coupled isolation module respectively by current-limiting resistance and unidirectional protection diode input; the output of one of them light-coupled isolation module connects an I/O input port of single-chip microcomputer in the core CPU module, and the output of another light-coupled isolation module connects one group of I/O input interface of single-chip microcomputer in the core CPU module by output behind mould/number conversion circuit.
Storage module and communication module when the core CPU module is connected with prison, the control interface of storage module, data-interface and read-write synchronised clock interface connect the corresponding control interface or the I/O interface of single-chip microcomputer in the core CPU module respectively during prison, and the serial communication interface of single-chip microcomputer connects the uplink communication module in the core CPU module.Storage module during prison, the preservation of the recorded information of realization equipment and the preservation of running parameter keep.Communication module is realized the networking and the information transmission of equipment.Communication module adopts RS-485 bus communication mode, perhaps adopts CAN bus or BUS bus communication mode, perhaps adopts wireless communication mode.
Described multi-speed motor gear recognition device, contain control/detection module of realizing Equipment Control and disable function, control/detection module is realized the strong and weak electricity isolation by the light-coupled isolation module, the input of realizing the light-coupled isolation module of state-detection connects the equipment work power supply that it will be controlled, and output connects an I/O input interface of single-chip microcomputer in the core CPU module; Realize that the input of the light-coupled isolation module of Equipment Control connects one group of I/O output interface of single-chip microcomputer, the working power of the equipment that its output control connection will be controlled.
Described multi-speed motor gear recognition device, can realize the multiport collection by a plurality of voltage detecting circuits, the input of each voltage detecting circuit is through connecting one group of I/O interface of single-chip microcomputer in the core CPU module respectively, to realize the range state identification and the control of a plurality of many grades of speed motors after mould/number conversion.
Useful good effect of the present invention:
1, the present invention proposes one rapidly, the recognition methods of motor reliable running status.Utilize the mutual voltage difference of drive coil between the different gears of motor windings, relatively obtain working as the operational taps of front motor by the voltage of gathering a certain gear and the standard transition magnitude of voltage that presets.The device that adopts this method to realize only need adopt one group of gear line, and is simple in structure, with low cost; Maintenance, repair, debugging have conveniently reduced the difficulty of construction when using, and have improved product competitiveness, have saved social resources, help the popularization of equipment.
2, multi-speed motor gear recognition methods of the present invention and device, voltage acquisition than general Acquisition Circuit have simply, safety, the characteristics that practicality is high.Voltage acquisition of the present invention has adopted light-coupled isolation and analog-to-digital conversion, has improved the fail safe and stability of equipment; The present invention proposes the voltage jump value of a wide region according to the mutual voltage difference of drive coil between the different gears of motor windings, is easy to accurate, the reliable recognition of motor gear.
3, multi-speed motor gear recognition device of the present invention is reasonable in design, installs, uses simply, and applicability is strong, can realize that the running status of many grades of speed motors is gathered in real time, realizes the remote transmission of operational factor and metrical information, and the realization metrical information is forever preserved; Information gathering is accurate, the continuous data information holding time is long.
4, multi-speed motor gear recognition methods of the present invention and device have control/detection module, can realize the disable function of motor or some external devices: directly assign forbidding by administrative center, cut off the power work loop of institute's control motor or other external device, thereby realize Long-distance Control.
5, voltage detecting circuit is simple and reliable, realizes the multiport collection easily, helps the integrated of equipment, can realize that the running status of many grades of speed motors of greater number detects and relevant device control, has reduced application cost.
Four, description of drawings:
Fig. 1: multi-speed motor gear recognition device module diagram of the present invention
Fig. 2: multi-speed motor gear recognition methods work-based logic figure of the present invention (is example with three-speed motor commonly used)
Fig. 3: apparatus of the present invention detecting unit gear and transition value graph of relation (is example with the three-speed motor)
Fig. 4: multi-speed motor gear recognition device CPU modular circuit schematic diagram of the present invention
Fig. 5: storage module circuit theory diagrams during apparatus of the present invention prison
Fig. 6: multi-speed motor gear recognition device control/detection module circuit theory diagrams of the present invention
Fig. 7: multi-speed motor gear recognition device communication module circuit theory diagrams of the present invention
Fig. 8: multi-speed motor gear recognition device voltage acquisition module of the present invention
Fig. 9: multi-speed motor gear recognition device analog-to-digital conversion module of the present invention
Figure 10: multi-speed motor gear recognition device power module of the present invention
Figure 11: multi-speed motor gear recognition device BUS bus uplink communication module of the present invention
Figure 12: multi-speed motor gear recognition device CAN bus uplink communication module of the present invention
Five, embodiment:
Embodiment one: the multi-speed motor gear recognition methods that the present invention is based on voltage mutual inductance technology, for adopting the totally zero multitap many grades of speed motors of winding, how many different rotational speed regulation that realize different gears with the different gear drive coil of the motor windings number of turn, between different gears because the difference of the drive coil number of turn, the mutual voltage value of arbitrary gear is also different, only by measuring the magnitude of voltage of wherein some known fixed gear drive coils, obtain different magnitudes of voltage according to mutual induction of voltage characteristic between motor windings then, compare by the voltage of the known fixed gear that will measure and the normal voltage of input, identification is also determined the electronic running status of these many grades of speed, comprises halted state and the gear that is moving.At first only measure one of them gear coil windings voltage, the status recognition of this testing circuit can be a switching value, when detected state when voltage is arranged, determine that promptly many grades of speed motors are in running status; When detected state is no-voltage, determine that promptly many grades of speed motors are halted state.
Magnitude of voltage when moving with lowest gear is a reference voltage, only measure the real-time voltage value U at motor lowest gear coil two ends, number of turn ratio characterisitic parameter according to different gear drive coils of motor and lowest gear drive coil, based on voltage mutual inductance technology, low-grade location drive coil real-time voltage U is with the different grade time variant voltage values that present of operational taps, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi〉Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when real-time collection voltage U＜V1, judges that then motor moves with lowest gear; When real-time collection voltage U meets Vi-1＜U＜Vi, then decidable its move with the i gear; When real-time collection voltage U meets U〉during Vi, then decidable its with the most high-grade speed operation.
Referring to Fig. 2, be example with the three-speed motor, the voltage U at low-grade drive coil two ends is gathered in gear recognition methods of the present invention, and it is low and middle-grade transition values that V1 is set, and V2 is a medium and high-grade transition value.Can know judge at first whether motor is opened, judge whether motor is in to stop, in the logical relation of judging U and V1, V2, can judge the running status of motor by logic diagram if motor leaves.Fig. 3 has shown that gear gathers the magnitude relationship between voltage and the transition value, and voltage and time plot during gear switch, shows about 1 second of medium and high-grade t1-t2 change-over time, about 1 second of low and middle-grade commentaries on classics time t3-t4 by the data of our actual measurement.Consider that motor is non-resistive load influence, this speed is enough to satisfy the requirement that detects.
Embodiment two: the recognition methods of present embodiment multi-speed motor gear, different with embodiment one is: the magnitude of voltage during with the most high-grade operation is a reference voltage, only measure the real-time voltage U at the high tap position drive coil two ends of motor, according to the number of turn ratio characterisitic parameter of the different gear drive coils of motor with high tap position drive coil, based on voltage mutual inductance technology, high tap position drive coil real-time voltage U is with the different grade time variant voltage values that present of operation shelves speed, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi〉Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when real-time collection voltage U meets U＜V1, then decidable its with the most high-grade speed operation; When real-time collection voltage U meets Vi-1＜U＜Vi, then decidable its with the operation of n+1-i shelves speed; When real-time collection voltage U meets U〉during Vi, then decidable its with the operation of deep low gear speed.
Embodiment three: referring to Fig. 1～Figure 10, present embodiment is for realizing the device of aforementioned multi-speed motor gear recognition methods, comprise the core CPU module, storage module during prison, communication module, voltage acquisition module, control/detection module and power module, power module provides working power for message accounting, the control interface of storage module during prison, data-interface and read-write synchronised clock interface connect the corresponding control interface or the I/O interface of core CPU module respectively, the serial communication interface of CPU connects the uplink communication module in the core CPU module, connects host computer by the uplink communication module.The voltage acquisition module core comprises voltage detecting circuit, analog to digital conversion circuit, power supply and peripheral circuit thereof, and voltage detecting has adopted light-coupled isolation, has avoided the interference with light current.Analog to digital conversion circuit can connect core CPU by the I/O interface.
Core CPU modular circuit principle schematic 4, storage module circuit theory schematic diagram when Fig. 5 is prison, Fig. 7 is a kind of embodiment of communication module, wherein U1 is CPU, memory when U2 is prison, U3 is a uplink communication RS485 bus communication chip.Central processing unit in the core CPU module (CPU) can adopt 89S52, AT89C52, P89C54BP, P89C58A,, MC68HC11A8, MC68HC11E9, MC68HC16, PIC16C877A, EM78P447, MSP430F147, MSP430F435, E78C52D, E78E58B and follow-up release thereof compatible chip in any one, four I/O port WDOG of CPU, SO, W_CLK, SI respectively with when prison storage module corresponding interface WDOG, SO, W_CLK, SI be connected, these interfaces can be defined arbitrarily by software; The reset terminal RST of CPU is connected with the reset terminal RST of monitor; The RXD of CPU, TXD are connected with corresponding interface RXD, the TXD of uplink communication module respectively, and message accounting connects host computer by the uplink communication module, and " the half duplex communication receiving/transmission control method and the device " of our company's patent applied for adopted in the control of communication.Figure 10 is a present embodiment message accounting power module circuitry principle schematic, and wherein U5, U6 are three terminal regulator, and power module provides work and control power supply for whole message accounting.
Present embodiment detects the voltage that obtains the known fixed gear by voltage acquisition module, and the reference transition threshold voltage of its value with the standard that is provided with compared, and can determine rotating speed of motor gear under this situation, comprises halted state.For example a three-speed motor is with low grade, middle-grade when respectively, and during high-grade operation, it is that voltage is arranged is the electric motor starting state that voltage detecting circuit detects.Getting low-grade location is the stationary monitoring point, by designing requirement adjusting device parameter, then can obtain with reference voltage (civil power or valve are controlled) between three different magnitude of voltage U, corresponding with high, normal, basic gear respectively, in conjunction with the company voltage jump value V1, the V2 that are provided with, and V2 V1.When gathering voltage is U〉the V2 situation is for high-grade, is V2 when gathering voltage〉U〉the V1 situation is middle-grade, is V1 when gathering voltage〉the U situation is low-grade.During the motor halted state,, can determine the motor halted state because voltage detecting circuit detects no-voltage.Voltage acquisition module adopts optocoupler 521 to realize strong and weak electricity isolation, the steady operation of protection system.External input terminals of module comprises that DO1, the zero line 220N01 of a certain static stall that connects motor join the 220L01 that leans on voltage with being connected, and isolation detection output F1 connects the I/O interface of core CPU module CPU; Another isolation detection output U_D1 connects the input interface of analog-to-digital conversion module U7; Obtain gathering the conversion value of voltage by Fig. 9 analog-to-digital conversion.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 single channel multi-channel A/D conversion chip, 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 single channel and multichannel motor.
Present embodiment can be realized the forbidding and the working service of controlled plant by control/detection module.Control/detection module circuit theory diagrams are seen Fig. 6.Control/detection module adopts optocoupler 521 to realize the strong and weak electricity isolation, and the input of control/detection module connects the working power of controlled plant, and the isolation detection output CHECK1 of control/detection module connects the I/O interface of core CPU module CPU; Control/detection module control section core is relay DJ, also can adopt controllable silicon to realize, the input control end CONT1 of module connects the I/O interface of CPU, the working power loop of the control output end OUT1 control connection control appliance of control/detection module, motor switch for example, the telemanagement of controlled plants such as electrically operated valve.
Many grades of speed motor running statuses of the present invention recognition device, be applied in central air-conditioning charging field, can be by gear identification accurately and reliably, obtain user's accurate service time, hot exchange power in conjunction with fan coil, adopt suitable computer management and software for calculation, can realize the metering of central air-conditioning.The function of the control/detection module of dependence device can realize the Long-distance Control of user's central air-conditioning, can control the valve with electrically motorized operation of fan coil motor or pipeline.By communication module, can realize the remote centralized control and the management of motor, improve the level of management.
Embodiment four: referring to Fig. 1～Fig. 5, and Fig. 7～Figure 10.The difference of present embodiment and embodiment three is: do not contain Equipment Control/measuring ability.Only remote detection is checked the operating state of motor, and controlled function is not provided.
Embodiment five: referring to Fig. 1～Fig. 6, and Fig. 7～Figure 11.Physical circuit and annexation and embodiment three are basic identical, and difference is that communication module adopts the BUS bus communication module, among Fig. 4 the RXD of CPU, TXD respectively with Figure 11 in corresponding connection of RXD_Y, TXD_Y.
Embodiment six: physical circuit and annexation be referring to Fig. 1～Fig. 6, Fig. 7～Figure 10, Figure 12.The difference of present embodiment and embodiment three is adopted the CAN bus communication module with upper machine communication.Among Figure 12 the RST of communication module, ALE, CS2, RD, WR, INT_CAN, ADO-AD7 respectively with Fig. 4 in RST, the 30th pin ALE, the 12nd pin INTO (definition cancellation originally), the 17th pin/RD, the 16th pin/WR, the 13rd pin INT1 (definition cancellation originally), the corresponding connection of the 39-32 pin P00-P07 of CPU.CAN controller among Figure 12 is connected with transceiver is corresponding.
Claims (7)
1. multi-speed motor gear recognition methods based on voltage mutual inductance technology, for adopting the totally zero multitap many grades of speed motors of winding, how many different rotational speed regulation that realize different gears with the drive coil number of turn, between different gears because the difference of the drive coil number of turn, the mutual voltage value of arbitrary gear drive coil is also different, it is characterized in that: described multi-speed motor gear recognition methods, only by measuring the magnitude of voltage of wherein some known fixed gear drive coils, obtain different magnitudes of voltage according to mutual induction of voltage characteristic between the motor-driven coil then, compare by the voltage of the known fixed gear that will measure and the normal voltage of input, the running status of identification and definite these many grades of speed motors, comprise halted state and the gear that is moving: the magnitude of voltage when moving with lowest gear is a reference voltage, only measure the real-time voltage value U of many grades of speed motor lowest gear drive coils, number of turn ratio characterisitic parameter according to different gear drive coils of motor and lowest gear drive coil, based on voltage mutual inductance technology, the real-time voltage value U of lowest gear drive coil is with the different grade time variant voltage values that present of operational taps, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi＞Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when the real-time voltage value U of lowest gear drive coil＜V1, judge that then motor moves with lowest gear; When the real-time voltage value U of lowest gear drive coil meets Vi-1＜U＜Vi, then decidable its move with the i gear; When the real-time voltage value U of lowest gear drive coil meets U＞Vi, then decidable its with the most high-grade speed operation.
2. multi-speed motor gear recognition methods according to claim 1, it is characterized in that: for many grades of speed motors, at first only measure the operating voltage of one of them gear drive coil by voltage detecting circuit, switching value of this voltage detecting circuit output, when its detected state when voltage is arranged, determine that promptly many grades of speed motors are in running status; When its detected state is no-voltage, determine that promptly many grades of speed motors are halted state.
3. multi-speed motor gear recognition methods based on voltage mutual inductance technology, for adopting the totally zero multitap many grades of speed motors of winding, how many different rotational speed regulation that realize different gears with the drive coil number of turn, between different gears because the difference of the drive coil number of turn, the mutual voltage value of arbitrary gear drive coil is also different, it is characterized in that: described multi-speed motor gear recognition methods, only by measuring the magnitude of voltage of wherein some known fixed gear drive coils, obtain different magnitudes of voltage according to mutual induction of voltage characteristic between the motor-driven coil then, compare by the voltage of the known fixed gear that will measure and the normal voltage of input, the running status of identification and definite these many grades of speed motors, comprise halted state and the gear that is moving: the magnitude of voltage during with the most high-grade operation is a reference voltage, only measure the real-time voltage value U of the high tap position drive coil of motor, according to the number of turn ratio characterisitic parameter of the different gear drive coils of motor with high tap position drive coil, based on voltage mutual inductance technology, the real-time voltage value U of high tap position drive coil is with the different grade time variant voltage values that present of operation shelves speed, number of turn ratio characteristic in the gear drive coil of many grades of speed motors is provided with voltage jump value V1 in advance, V2, Vi-1, Vi, Vi＞Vi-1, if many grades of speed motor shelves speed progression are n, then the i maximum is n-1, i wherein, n is a natural number, when the real-time voltage value U of high tap position drive coil meets U＜V1, then decidable its with the most high-grade speed operation; When the real-time voltage value U of high tap position drive coil meets Vi-1＜U＜Vi, then decidable its with the operation of n+1-i shelves speed; When the real-time voltage value U of high tap position drive coil meets U＞Vi, then decidable its with the operation of deep low gear speed.
4. multi-speed motor gear recognition methods according to claim 3, it is characterized in that: for many grades of speed motors, at first only measure the operating voltage of one of them gear drive coil by voltage detecting circuit, switching value of this voltage detecting circuit output, when its detected state when voltage is arranged, determine that promptly many grades of speed motors are in running status; When its detected state is no-voltage, determine that promptly many grades of speed motors are halted state.
5. multi-speed motor gear recognition device of realizing claim 1 or 3 described multi-speed motor gear recognition methodss; contain the core CPU module; described core CPU module contains single-chip microcomputer and peripheral circuit; it is characterized in that: contain the drive coil operating voltage that voltage acquisition module is gathered some gears of many grades of speed motors in real time; record voltage signal and after mould/number conversion, insert the core CPU module; the built-in multi-speed motor gear recognizer of described core CPU module based on voltage mutual inductance technology; described voltage acquisition module contains voltage detecting circuit; the input of voltage detecting circuit connects the drive coil operating voltage input of some gears; record voltage signal and be divided into two-way inserts the light-coupled isolation module respectively by current-limiting resistance and unidirectional protection diode input; the output of one of them light-coupled isolation module connects into an I/O input port of single-chip microcomputer in the core CPU module, and the output of another light-coupled isolation module connects one group of I/O input interface of single-chip microcomputer in the core CPU module by output behind mould/number conversion circuit.
6. multi-speed motor gear recognition device according to claim 5, it is characterized in that: contain control/detection module of realizing Equipment Control and disable function, control/detection module is realized the strong and weak electricity isolation by the light-coupled isolation module, the input of realizing the light-coupled isolation module of state-detection connects the equipment work power supply that it will be controlled, and output connects an I/O input interface of single-chip microcomputer in the core CPU module; Realize that the input of the light-coupled isolation module of Equipment Control connects one group of I/O output interface of single-chip microcomputer, the working power of the equipment that its output control connection will be controlled.
7. according to claim 5 or 6 described multi-speed motor gear recognition devices, it is characterized in that: voltage acquisition module contains at least one voltage detecting circuit, the realization multiport is gathered, the output signal of described each voltage detecting circuit is through connecting one group of I/O interface of single-chip microcomputer in the core CPU module respectively, to realize the range state identification and the control of a plurality of many grades of speed motors after mould/number conversion.
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| EP4087116A4 (en) * | 2021-03-19 | 2023-11-08 | Beiang Air Tech Ltd. | Gear control circuit for alternating current motor, system, switch controller, and electronic device |
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| EP4087116A4 (en) * | 2021-03-19 | 2023-11-08 | Beiang Air Tech Ltd. | Gear control circuit for alternating current motor, system, switch controller, and electronic device |
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