CN202676729U - Magnetic induction rotation speed measuring device - Google Patents
Magnetic induction rotation speed measuring device Download PDFInfo
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- CN202676729U CN202676729U CN 201220117288 CN201220117288U CN202676729U CN 202676729 U CN202676729 U CN 202676729U CN 201220117288 CN201220117288 CN 201220117288 CN 201220117288 U CN201220117288 U CN 201220117288U CN 202676729 U CN202676729 U CN 202676729U
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Abstract
The utility model provides a magnetic induction rotation speed measuring device, which comprises a magnet and a magnetic induction mechanism, wherein the magnet is fixed on a rotating object, and the magnetic induction mechanism is used for detecting the rotation speed of the magnet. In an embodiment of the utility model, rotation speeds of rotating objects such as a motor shaft and the like can be monitored through a simple structure, and damage to the objects such as the motor shaft and the like caused by abnormal rotation speeds can be prevented. In addition, the magnetic induction rotation speed measuring device is low in cost and reasonable in structure, and an existing product can be easily modified. Furthermore, the magnetic induction rotation speed measuring device is also applicable to elevators, motor vehicles, rotating mechanical equipment, conveying equipment, other household appliances, numerical control equipment, ships, aviation equipment, aviation airplanes, military equipment and the like.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of magnetic strength rotation-speed measuring device.
Background technology
Along with the raising of living standards of the people, increasing electronic product has entered family.Much all to use motor (motor) in the existing electronic product, comprise air-conditioning, refrigerator, electric fan etc.Existing motor all has the motor shaft as the power efferent, and motor shaft can independently exist, or at motor shaft some accessories is set, such as flabellum.The motor of existing electronic product is not provided with speed measuring device, therefore can't monitor the running status of motor.When motor caused motor rotational shaft speed to cross slow or stall owing to reasons such as load are excessive, motor can't auto-breaking, is easy to cause burn-down of electric motor.
Same, this phenomenon does not exist only on the motor type product, all have this problem on the product of any needs monitoring rotating speed.
The utility model content
For the product that solves the needs monitoring rotating speed such as motor in the prior art can't adopt simple structure to obtain the problem of its rotating speed, the utility model embodiment has proposed a kind of magnetic strength rotation-speed measuring device.Described technical scheme is as follows:
The utility model embodiment has proposed a kind of magnetic strength rotation-speed measuring device, comprising: magnetic, described magnetic are fixed in and rotate on the thing; Also comprise be used to the magnetic induction mechanism that surveys described magnetic rotating speed.
Preferred as technique scheme, described magnetic induction mechanism comprises: be fixed in described rotation thing side with the magnetic induction detecting coil of surveying described magnetic rotating speed, when described magnetic induction detecting coil detect magnetic the time output current the pulse current output circuit, determine to rotate the pulse detection delay circuit of thing rotating speed according to the output current of pulse current output circuit, the on-off circuit of opening according to the pulse detection delay circuit, the input power disconnecting circuit that when on-off circuit is opened, disconnects the input power of described rotation thing; Described magnetic induction detecting coil is electrically connected described pulse current output circuit, and described pulse detection delay circuit is electrically connected described inductive impulse current output circuit; Described pulse detection delay circuit is electrically connected described on-off circuit; Described on-off circuit is electrically connected described input power disconnecting circuit.
Preferred as technique scheme, described magnetic induction mechanism also comprises:
Be electrically connected described pulse current output circuit amplifies and send to described pulse detection delay circuit with the electric current with output pulse current amplifying circuit;
Be electrically connected described pulse current amplifying circuit and separate output circuit with the pulse current that described pulse current amplifying circuit output current is filtered.
Preferred as technique scheme, described rotation thing is the motor shaft of motor; Described magnetic is fixed on the described motor shaft, or on the accessory that rotates synchronously with described motor shaft.
Preferred as technique scheme, described pulse current amplifying circuit comprises: positive voltage VDD, negative voltage VSS, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first diode D1, the first capacitor C 1, the second capacitor C 2, the first triode VT1;
Described positive voltage VDD connects the positive pole of the first diode D1 by the first resistance R 1, described negative voltage VSS connects the negative pole of the first diode D1;
The positive pole of described the first diode D1 connects the first resistance R 1 and magnetic induction detecting coil L, and described the first diode D1 is in parallel with the first capacitor C 1, and magnetic induction detecting coil L is with after the second resistance R 2 is connected, and is in parallel with described the first capacitor C 1;
The base stage b of the first triode VT1 connects the second resistance R 2 and the magnetic induction detecting coil L as biasing resistor, and collector c connects positive voltage VDD by the 3rd resistance R 3, and emitter e connects negative voltage VSS.
Preferred as technique scheme, described pulse current separates output circuit and comprises: the second diode D2, the negative pole of described the second diode D2 connect the collector c of the first triode VT1 of described pulse current amplifying circuit.
Preferred as technique scheme, described pulse detection delay circuit comprises: the 4th resistance R 4, the 5th resistance R 5, the second capacitor C 2, Zener diode VDW; Described the 4th resistance R 4 is connected with described the 5th resistance R 5, and described the 4th resistance R 4 connects the positive pole of described positive voltage VDD and described the second diode D2; Described the 5th resistance R 5 connects the positive pole of described negative voltage VSS and described the second diode D2; Described the 5th resistance R 5 is in parallel with the second capacitor C 2, and connects the negative pole of Zener diode VDW.
Preferred as technique scheme, described on-off circuit comprises: Zener diode VDW, the second triode VT2, relay K; The base stage b of described the second triode VT2 connects the positive pole of described Zener diode VDW, and the collector c of described the second triode VT2 connects positive voltage VDD by described relay K, and the emitter e of described the second triode VT2 connects negative voltage VSS.
Preferred as technique scheme, described pulse current amplifying circuit is connected with electronic counter or pulse clearing lamp.
Preferred as technique scheme, described pulse current detects delay circuit and is provided with manual reset switch.
The beneficial effect of the technical scheme that the utility model embodiment provides is: the utility model embodiment can be by the monitoring of simple structure realization to the rotating speed of the article for rotation such as motor shaft, with the damage that prevents that the objects such as motor shaft from causing unusually because of rotating speed.Cost of the present utility model is simple, rational in infrastructure simultaneously, is easy to existing product is reequiped.The utility model also is applicable to elevator, motor vehicle, rotary machine equipment, conveying equipment, other household electrical appliance, numerical control device, steamer, air equipment, space shuttle, military equipment etc.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the below will do one to the accompanying drawing that uses among the embodiment and introduce simply, apparently, below listed accompanying drawing only be embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the utility model embodiment;
Fig. 2 is the structured flowchart of the utility model embodiment;
Fig. 3 realizes a kind of concrete circuit diagram of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
Embodiment 1
As shown in Figure 1, the magnetic strength rotation-speed measuring device of the utility model embodiment comprises: magnetic 1, described magnetic are fixed in and rotate on the thing; Also comprise be used to the magnetic induction mechanism 2 that surveys described magnetic rotating speed.
The simple structure that can adopt the utility model embodiment realizes namely by being fixed on the magnetic that rotates on the thing, being used for the magnetic induction mechanism of this magnetic of induction to rotating testing the speed of thing, and the rotating speed of thing is rotated in monitoring.This structure not only cost is low, is easy to realize, and is easy to improve at existing product.
Further, on the basis of embodiment 1, the application provides concrete implementation.Certainly, this implementation is just in order to play illustrational effect, but not the restriction that the application's general plotting is made.Those skilled in that art are appreciated that the mode of any realization under the application's general plotting, even it is not put into the application, and also should be within the application's protection domain.
Concrete, such as Fig. 2, magnetic induction mechanism comprises described in the embodiment 1: be fixed in described rotation thing side with the magnetic induction detecting coil 21 of surveying described magnetic rotating speed, when described magnetic induction detecting coil 21 detect magnetic the time output current pulse current output circuit 22, determine to rotate the pulse detection delay circuit 24 of thing rotating speed according to the output current of pulse current output circuit 22, the on-off circuit 25 of opening according to pulse detection delay circuit 24, the input power disconnecting circuit 26 that when on-off circuit 25 is opened, disconnects the input power of described rotation thing; Described magnetic induction detecting coil 21 is electrically connected described pulse current output circuit 22, and described pulse detection delay circuit 24 is electrically connected described inductive impulse current output circuit 22; Described pulse detection delay circuit 24 is electrically connected described on-off circuit 25; Described on-off circuit 25 is electrically connected described input power disconnecting circuit 26.
Further, described magnetic induction mechanism also comprises:
Be electrically connected described pulse current output circuit 22 amplifies and send to described pulse detection delay circuit 24 with the electric current with output pulse current amplifying circuit 23;
Be electrically connected described pulse current amplifying circuit 23 and separate output circuit with the pulse current that described pulse current amplifying circuit output current is filtered.
Further, the described rotation thing motor shaft that is motor; Described magnetic is fixed on the described motor shaft, or on the accessory that rotates synchronously with described motor shaft.
Embodiment 3
As shown in Figure 3, on the basis of embodiment 1 and embodiment 2, the application provides a kind of concrete circuit diagram of the application's of realization general plotting.Certainly, this circuit diagram is just in order to play illustrational effect, but not the restriction that the application's general plotting is made.Those skilled in that art are appreciated that any circuit structure under the application's general plotting, even it is not put into the application, and also should be within the application's protection domain.
As shown in Figure 3, magnetic DT can be a permanent magnet.
Described pulse current amplifying circuit comprises: positive voltage VDD, negative voltage VSS, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first diode D1, the first capacitor C 1, the second capacitor C 2, the first triode VT1;
Described positive voltage VDD connects the positive pole of the first diode D1 by the first resistance R 1, described negative voltage VSS connects the negative pole of the first diode D1;
The positive pole of described the first diode D1 connects the first resistance R 1 and magnetic induction detecting coil L, and described the first diode D1 is in parallel with the first capacitor C 1, and magnetic induction detecting coil L is with after the second resistance R 2 is connected, and is in parallel with described the first capacitor C 1;
The base stage b of the first triode VT1 connects the second resistance R 2 and the magnetic induction detecting coil L as biasing resistor, and collector c connects positive voltage VDD by the 3rd resistance R 3, and emitter e connects negative voltage VSS.
Preferred as technique scheme, described pulse current separates output circuit and comprises: the second diode D2, the negative pole of described the second diode D2 connect the collector c of the first triode VT1 of described pulse current amplifying circuit.
As shown in Figure 3, described pulse detection delay circuit comprises: the 4th resistance R 4, the 5th resistance R 5, the second capacitor C 2, Zener diode VDW; Described the 4th resistance R 4 is connected with described the 5th resistance R 5, and described the 4th resistance R 4 connects the positive pole of described positive voltage VDD and described the second diode D2; Described the 5th resistance R 5 connects the positive pole of described negative voltage VSS and described the second diode D2; Described the 5th resistance R 5 is in parallel with the second capacitor C 2, and connects the negative pole of Zener diode VDW.
As shown in Figure 3, described on-off circuit comprises: Zener diode VDW, the second triode VT2, relay K; The base stage b of described the second triode VT2 connects the positive pole of described Zener diode VDW, and the collector c of described the second triode VT2 connects positive voltage VDD by described relay K, and the emitter e of described the second triode VT2 connects negative voltage VSS.
Further, can also connect the input power disconnecting circuit of this motor as the relay K of on-off circuit, when unusual, to disconnect this input power disconnecting circuit, motor be quit work.
As shown in Figure 1, described pulse current amplifying circuit is connected with electronic counter or pulse clearing lamp.
As shown in Figure 3, described pulse current detects delay circuit and is provided with manual reset switch S.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a magnetic strength rotation-speed measuring device is characterized in that, comprising: magnetic, described magnetic are fixed in and rotate on the thing; Also comprise be used to the magnetic induction mechanism that surveys described magnetic rotating speed.
2. magnetic strength rotation-speed measuring device according to claim 1, it is characterized in that, described magnetic induction mechanism comprises: be fixed in described rotation thing side to survey the magnetic induction detecting coil of described magnetic rotating speed, when described magnetic induction detecting coil detect magnetic the time output current the pulse current output circuit, determine to rotate the pulse detection delay circuit of thing rotating speed according to the output current of pulse current output circuit, according to the on-off circuit of pulse detection delay circuit unlatching, when opening, on-off circuit disconnects the input power disconnecting circuit of the input power of described rotation thing; Described magnetic induction detecting coil is electrically connected described pulse current output circuit, and described pulse detection delay circuit is electrically connected described inductive impulse current output circuit; Described pulse detection delay circuit is electrically connected described on-off circuit; Described on-off circuit is electrically connected described input power disconnecting circuit.
3. magnetic strength rotation-speed measuring device according to claim 2 is characterized in that, described magnetic induction mechanism also comprises:
Be electrically connected described pulse current output circuit amplifies and send to described pulse detection delay circuit with the electric current with output pulse current amplifying circuit;
Be electrically connected described pulse current amplifying circuit and separate output circuit with the pulse current that described pulse current amplifying circuit output current is filtered.
4. magnetic strength rotation-speed measuring device according to claim 3 is characterized in that, described rotation thing is the motor shaft of motor; Described magnetic is fixed on the described motor shaft, or on the accessory that rotates synchronously with described motor shaft.
5. magnetic strength rotation-speed measuring device according to claim 4, it is characterized in that, described pulse current amplifying circuit comprises: positive voltage (VDD), negative voltage (VSS), the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), the first diode (D1), the first electric capacity (C1), the second electric capacity (C2), the first triode (VT1);
Described positive voltage (VDD) connects the positive pole of the first diode (D1) by the first resistance (R1), described negative voltage (VSS) connects the negative pole of the first diode (D1);
The positive pole of described the first diode (D1) connects the first resistance (R1) and magnetic induction detecting coil (L), described the first diode (D1) is in parallel with the first electric capacity (C1), magnetic induction detecting coil (L) is with after the second resistance (R2) is connected, and is in parallel with described the first electric capacity (C1);
The base stage (b) of the first triode (VT1) connects the second resistance (R2) and the magnetic induction detecting coil (L) as biasing resistor, collector (c) connects positive voltage (VDD) by the 3rd resistance (R3), and emitter (e) connects negative voltage (VSS).
6. magnetic strength rotation-speed measuring device according to claim 5, it is characterized in that, described pulse current separates output circuit and comprises: the second diode (D2), the negative pole of described the second diode (D2) connect the collector (c) of first triode (VT1) of described pulse current amplifying circuit.
7. magnetic strength rotation-speed measuring device according to claim 6 is characterized in that, described pulse detection delay circuit comprises: the 4th resistance (R4), the 5th resistance (R5), the second electric capacity (C2), Zener diode (VDW); Described the 4th resistance (R4) is connected with described the 5th resistance (R5), and described the 4th resistance (R4) connects the positive pole of described positive voltage (VDD) and described the second diode (D2); Described the 5th resistance (R5) connects the positive pole of described negative voltage (VSS) and described the second diode (D2); Described the 5th resistance (R5) is in parallel with the second electric capacity (C2), and connects the negative pole of Zener diode (VDW).
8. magnetic strength rotation-speed measuring device according to claim 7 is characterized in that, described on-off circuit comprises: Zener diode (VDW), the second triode (VT2), relay (K); The base stage (b) of described the second triode (VT2) connects the positive pole of described Zener diode (VDW), the collector (c) of described the second triode (VT2) connects positive voltage (VDD) by described relay (K), and the emitter (e) of described the second triode (VT2) connects negative voltage (VSS).
9. magnetic strength rotation-speed measuring device according to claim 8 is characterized in that, described pulse current amplifying circuit is connected with electronic counter or pulse clearing lamp.
10. magnetic strength rotation-speed measuring device according to claim 9 is characterized in that, described pulse detection delay circuit is provided with manual reset switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220117288 CN202676729U (en) | 2012-03-17 | 2012-03-17 | Magnetic induction rotation speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220117288 CN202676729U (en) | 2012-03-17 | 2012-03-17 | Magnetic induction rotation speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676729U true CN202676729U (en) | 2013-01-16 |
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ID=47497628
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220117288 Expired - Fee Related CN202676729U (en) | 2012-03-17 | 2012-03-17 | Magnetic induction rotation speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621344A (en) * | 2012-03-17 | 2012-08-01 | 佛山市顺德区海伦宝电器有限公司 | Magnetic induction rotation speed measuring device |
| CN104155468A (en) * | 2014-08-14 | 2014-11-19 | 新誉集团有限公司 | Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment |
-
2012
- 2012-03-17 CN CN 201220117288 patent/CN202676729U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621344A (en) * | 2012-03-17 | 2012-08-01 | 佛山市顺德区海伦宝电器有限公司 | Magnetic induction rotation speed measuring device |
| CN102621344B (en) * | 2012-03-17 | 2014-07-16 | 佛山市顺德区海伦宝电器有限公司 | Magnetic induction rotation speed measuring device |
| CN104155468A (en) * | 2014-08-14 | 2014-11-19 | 新誉集团有限公司 | Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150317 |
|
| EXPY | Termination of patent right or utility model |