CN204633662U - A kind of stable motor load detection system - Google Patents
A kind of stable motor load detection system Download PDFInfo
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- CN204633662U CN204633662U CN201520258101.9U CN201520258101U CN204633662U CN 204633662 U CN204633662 U CN 204633662U CN 201520258101 U CN201520258101 U CN 201520258101U CN 204633662 U CN204633662 U CN 204633662U
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Abstract
The utility model discloses a kind of stable motor load detection system and detection method, detection system comprises current detection module, voltage detection module, central control module, controllable silicon and motor interface, current detection module is connected on live wire, SCR control power supply is powered to motor interface, voltage detection module is connected between zero line and live wire, motor interface is provided with two, one is arranged on zero line, one is arranged on live wire, current detection module and voltage detection module are connected on central control module, central control module exports control signal to controllable silicon.Whether the utility model is with by the energy balane motor detecting input motor carries, and effectively can solve the error in judgement that mains fluctuations cause.
Description
Technical field
The utility model discloses a kind of electric motor drive system, particularly a kind of stable motor load detection system, the electric tool technical field of AC-powered.
Background technology
Electric tool, especially motor, be all generally short time work, namely tick over stand-by time is longer, and it is shorter that band carries the operating time.When tick over is standby, motor needs to consume the rotating speed that larger energy maintains equipment setting equally, and now equipment is actually and is flogging a dead horse, and this kind of situation will a lot of electric energy of waste in vain.
Utility model content
When non-loaded, comparatively macro-energy is needed to maintain rotating speed equally for the above-mentioned motor of the prior art mentioned, the shortcoming of waste electric energy, the utility model provides a kind of stable motor load to detect drive system, it is by current detection module and voltage detection module, detect supply current and the voltage of motor, thus calculate motor whether band carries, control power output further.
The technical scheme that the utility model solves the employing of its technical problem is: a kind of stable motor load detection system, detection system comprises current detection module, voltage detection module, central control module, controllable silicon and motor interface, current detection module is connected on live wire, SCR control power supply is powered to motor interface, voltage detection module is connected between zero line and live wire, motor interface is provided with two, one is arranged on zero line, one is arranged on live wire, current detection module and voltage detection module are connected on central control module, central control module exports control signal to controllable silicon.
The technical scheme that the utility model solves the employing of its technical problem further comprises:
Described live wire is serially connected with hand switch S1.
Described current detection module adopts comparison amplifier U2A, detects resistance R1 and is serially connected on live wire, and the in-phase input end of comparison amplifier U2A and inverting input are connected to and detect resistance R1 two ends.
Described voltage detection module adopts comparison amplifier U2B, the in-phase input end of comparison amplifier U2B is connected on live wire, divider resistance R18 and divider resistance R19 is connected in series between live wire and zero line, and the inverting input of comparison amplifier U2B is connected between divider resistance R18 and divider resistance R19.
Described controllable silicon adopts bidirectional triode thyristor.
Described controllable silicon is serially connected on live wire.
The beneficial effects of the utility model are: whether the utility model is with by the energy balane motor detecting input motor carries, and effectively can solve the error in judgement that mains fluctuations cause.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
The present embodiment is the utility model preferred implementation, and other its principles all are identical with the present embodiment or approximate with basic structure, all within the utility model protection range.
Please refer to accompanying drawing 1 and accompanying drawing 2, the utility model mainly comprises current detection module, voltage detection module, central control module, controllable silicon and motor interface, the present embodiment adopts electric main to power, current detection module is connected on live wire, SCR control live wire is powered to motor interface, voltage detection module is connected between zero line and live wire, motor interface is provided with two, one is arranged on zero line, one is arranged on live wire, current detection module and voltage detection module are connected on central control module, central control module exports control signal to controllable silicon, control its break-make.In the present embodiment, live wire is serially connected with hand switch S1.In the present embodiment, current detection module adopts comparison amplifier U2A, detecting resistance R1 is serially connected on live wire, the in-phase input end of comparison amplifier U2A and inverting input are connected to and detect resistance R1 two ends, by comparison amplifier U2A according to the voltage difference detecting resistance R1 two ends, be converted into the size of current through resistance R1, and input central control module, voltage detection module adopts comparison amplifier U2B, the in-phase input end of comparison amplifier U2B is connected on live wire, divider resistance R18 and divider resistance R19 is connected in series in (the divider resistance R18 be namely connected in series and divider resistance R19 and motor interface are connected in parallel) between live wire and zero line, the inverting input of comparison amplifier U2B is connected between divider resistance R18 and divider resistance R19, comparison amplifier U2B is according to the voltage difference at divider resistance R18 two ends, be converted into motor both end voltage, and export to central control module.In the present embodiment, controllable silicon adopts bidirectional triode thyristor.
The utility model, in order to reduce tick over stand-by power consumption, reduces motor speed and maintains electric machine rotation with less electric energy, the rotating speed that the equipment that returns to when equipment run with load is specified when equipment tick over is standby.For achieving the above object, by the electric current and voltage detecting motor, the utility model judges whether motor is with and carries, if judge the scheme of motor whether with carrying by detecting current of electric, when mains fluctuations, the electric current of motor also there will be fluctuation, thus cause band to carry judging unsuccessfully, only detecting the voltage that is supplied to motor to judge the scheme of motor whether with carrying, also can cause when input supply voltage fluctuates being with and year to judge unsuccessfully.Whether the utility model is with by the energy balane motor detecting input motor carries, and effectively can solve the error in judgement that mains fluctuations cause.
Detection method of the present utility model, i.e. the utility model using method in use, for being detected the electric current I flowing through motor by current detection module, the voltage U at motor two ends is detected by voltage detection module, the electric energy P=UI consumed when motor runs, be supplied to the product of the voltage of motor and the electric current of electrical consumption during by calculating motor and running, calculate power input to a machine (energy consumed when namely machine runs).When motor be not with carry time, the electric current of electrical consumption is less, by P=UI just can judge motor be not with carry, at this moment just can reduce motor speed thus reduction electrical consumption electric current, to reach the object of power saving; Carry when motor belt motor and be, the electric current of electrical consumption increases, and just can judge that motor has been with and carry, at this moment the rotating speed of motor is brought up to normal working speed by P=UI.
Whether the utility model is with by the energy balane motor detecting input motor carries, and effectively can solve the error in judgement that mains fluctuations cause.
Claims (6)
1. a stable motor load detection system, it is characterized in that: described detection system comprises current detection module, voltage detection module, central control module, controllable silicon and motor interface, current detection module is connected on live wire, SCR control power supply is powered to motor interface, voltage detection module is connected between zero line and live wire, motor interface is provided with two, one is arranged on zero line, one is arranged on live wire, current detection module and voltage detection module are connected on central control module, and central control module exports control signal to controllable silicon.
2. stable motor load detection system according to claim 1, is characterized in that: described live wire is serially connected with hand switch S1.
3. stable motor load detection system according to claim 1, it is characterized in that: described current detection module adopts comparison amplifier U2A, detecting resistance R1 is serially connected on live wire, and the in-phase input end of comparison amplifier U2A and inverting input are connected to and detect resistance R1 two ends.
4. stable motor load detection system according to claim 1, it is characterized in that: described voltage detection module adopts comparison amplifier U2B, the in-phase input end of comparison amplifier U2B is connected on live wire, divider resistance R18 and divider resistance R19 is connected in series between live wire and zero line, and the inverting input of comparison amplifier U2B is connected between divider resistance R18 and divider resistance R19.
5. stable motor load detection system according to claim 1, is characterized in that: described controllable silicon adopts bidirectional triode thyristor.
6. stable motor load detection system according to claim 1, is characterized in that: described controllable silicon is serially connected on live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258101.9U CN204633662U (en) | 2015-04-27 | 2015-04-27 | A kind of stable motor load detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258101.9U CN204633662U (en) | 2015-04-27 | 2015-04-27 | A kind of stable motor load detection system |
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| CN204633662U true CN204633662U (en) | 2015-09-09 |
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| CN201520258101.9U Active CN204633662U (en) | 2015-04-27 | 2015-04-27 | A kind of stable motor load detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811118A (en) * | 2015-04-27 | 2015-07-29 | 李保华 | Stable electric motor load detection system and detection method |
| CN108780123A (en) * | 2017-09-28 | 2018-11-09 | 深圳和而泰数据资源与云技术有限公司 | A kind of load detection method, load detecting circuit and electronic equipment |
-
2015
- 2015-04-27 CN CN201520258101.9U patent/CN204633662U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811118A (en) * | 2015-04-27 | 2015-07-29 | 李保华 | Stable electric motor load detection system and detection method |
| CN108780123A (en) * | 2017-09-28 | 2018-11-09 | 深圳和而泰数据资源与云技术有限公司 | A kind of load detection method, load detecting circuit and electronic equipment |
| WO2019061170A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳和而泰数据资源与云技术有限公司 | Load detection method, load detection circuit and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180223 Address after: 518000 Guangdong Shenzhen City, Shenzhen Nanshan District Taoyuan Street Li Shan Road University City Pioneer Park 1103 room Patentee after: Shenzhen sailing Robot Technology Co., Ltd. Address before: 523000 Fuji industrial city, Qingxi Town, Dongguan, Guangdong Province, No. 7 factory building Patentee before: Li Baohua |
|
| TR01 | Transfer of patent right |