CN201078756Y - Inductance type velocity detection circuit - Google Patents
Inductance type velocity detection circuit Download PDFInfo
- Publication number
- CN201078756Y CN201078756Y CNU2007201222387U CN200720122238U CN201078756Y CN 201078756 Y CN201078756 Y CN 201078756Y CN U2007201222387 U CNU2007201222387 U CN U2007201222387U CN 200720122238 U CN200720122238 U CN 200720122238U CN 201078756 Y CN201078756 Y CN 201078756Y
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- resistance
- switch triode
- inductance
- inductor
- voltage
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Abstract
The utility model relates to an inductance type speed checking circuit, which consists of individual components such as an inductor, etc., a voltage-stabilizing capacitance, a switch triode, a divider resistance and a current limit resistance; the individual components such as inductor, etc. comprise a magnetic ring body fixed on the rotary shaft to be measured and the inductor inducing the magnetic ring field; a fourth resistance with the inductor connected in series to play voltage distribution function is connected in parallel with the voltage-stabilizing capacitance and then connected with a second resistance playing protection function to the switch triode in series, so as to connect to the base of the switch triode; the base of the switch triode is connected with a trigger power supply and a third resistance plating voltage distribution function; the collector of the switch triode is connected with conduction power supply and a first resistance playing a current limit function. Compared with the prior art, the utility model has simple structure; by adopting common electronic components and simple manufacture, the purpose of rotating speed measuring can be perfectly realized; in particular, the manufacture can be realized without requirement of complex special equipment, and the cost of small amount manufacture is very low.
Description
Technical field
The utility model relates to a kind of velocity checking circuits, especially relates to a kind of inductance type velocity checking circuits that rotating speed is detected.
Background technology
Prior art adopts integrated Hall IC to detect the rotating speed of rotation axis usually, and detected signal feedback is given controller, by the rotating speed of its control rotating shaft or tumbler.Be called the tachometric survey that the patent of " Hall integrated circuit speed probe " just is to use the hall sensing components and parts to carry out as Chinese patent ZL200520020105.x, name.The Hall components and parts are integrated IC, and its cost is higher.
The utility model content
Technical problem to be solved in the utility model is: a kind of inductance type velocity checking circuits is provided, the non-integrated IC of sort circuit, only use less electronic component commonly used, realize detecting the purpose of rotating speed, can solve the existing components and parts cost problem of higher that detects.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of inductance type velocity checking circuits, described testing circuit comprise discrete components and parts, electric capacity of voltage regulation, switch triode, divider resistance and current-limiting resistance formations such as inductance; Discrete components and parts such as described inductance comprise the magnetic ring body that is fixed in the detected rotating shaft and the inductance in reaction magnetic ring magnetic field; Connected the 4th resistance of dividing potential drop effect of inductance, in parallel with described electric capacity of voltage regulation again, second resistance of connecting switch triode being shielded is connected to the base stage of described switch triode then; Base stage at switch triode is connected with the 3rd resistance that triggers power supply and play its dividing potential drop effect; The collector of switch triode is connected with turn-on power and plays first resistance of metering function.
Preferably: the voltage of described triggering power supply and turn-on power is+5V.
Preferably: the emitter of described switch triode is provided with the port of output switching signal.
The beneficial effects of the utility model are: compared to existing technology, the utility model is simple in structure, adopts electronic component commonly used, can realize the purpose of good detection rotating speed through simpler production, particularly not needing to drop into complicated professional equipment can make, very low of its a small amount of cost of manufacture.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model provides a kind of inductance type velocity checking circuits.As shown in Figure 1, a kind of inductance type velocity checking circuits, it comprises discrete components and parts, electric capacity of voltage regulation C1, switch triode TR1, divider resistance and current-limiting resistances such as inductance.
Discrete components and parts such as inductance comprise the magnetic ring body T that is fixed in the detected rotating shaft and the inductance L 1 in reaction magnetic ring magnetic field.Connected the 4th resistance R 4 of dividing potential drop effect of inductance L 1, in parallel with electric capacity of voltage regulation C1 again, second resistance R 2 of connecting switch triode TR1 being shielded is connected to the base stage of switch triode TR1 then.Inductance L 1 is with electric capacity of voltage regulation C1 and connect end ground connection.
Base stage at switch triode TR1 is connected with+and 5V triggers power supply and plays the 3rd resistance R 3 of its dividing potential drop effect; The 3rd resistance R 3 one end connect and trigger power supply, and the other end also connects the base stage of second resistance R 2 and switch triode TR1.
The collector of switch triode TR1 is connected with+turn-on power of 5V and first resistance R 1 of a metering function.The emitter of switch triode TR1 is provided with the port I/O1 of output switching signal, and this port is connected with the input/output port of controller.Switch triode TR1 grounded emitter.
The utility model can be used as the holding circuit of supervision tumbler rotating speed.Its principle of work and the course of work are as follows.(1) magnet ring is fixed together with the axle that needs detected speed; (2) when magnet ring rotates together along with axle, magnet ring produces alternating magnetic field around it, thereby induces alternating electromotive force in inductance L 1; (3) alternating electromotive force acts on the base stage of triode TR1 by the 4th resistance R 4 and second resistance R 2, makes triode TR1 along with the slewing rate of magnet ring is carried out turn-on and turn-off; (4) when triode TR1 conducting, port I/O1 receives low level, and when triode TR1 ended, port I/O1 received high level, thereby comes detection speed; (5) effect of capacitor C 1 is the output voltage that is used for stablizing inductance L1, generally adopts 85nF; The effect of (6) second resistance R 2 is when capacitor C 1 discharge, prevents that triode TR1 from owing to discharge impact burns, generally adopting 330 Ω; (7) the 3rd resistance R 3 are moved the 5VDC direct supply on being, for the triode conducting provides electric current because the voltage belt that inductance L 1 produces carry can be very little, draw the 3rd R3 so will rely on, provide electric current by 5DVC, the value of the 3rd resistance R 3 is generally 100K Ω; (8) the 4th resistance R 4 and second R2 constitute bleeder circuit with the 3rd R3 together, guarantee that the base stage of triode is the conduction voltage drop of 0.6VDC, and the value of general the 4th R4 is 14K Ω, draws on (9) first resistance R 1 triode TR1, plays metering function.
Claims (3)
1. inductance type velocity checking circuits, it is characterized in that: described testing circuit comprises discrete components and parts, electric capacity of voltage regulation (C1), switch triode (TR1), divider resistance and current-limiting resistances such as inductance; Discrete components and parts such as described inductance comprise the magnetic ring body (T) that is fixed in the detected rotating shaft and the inductance (L1) in reaction magnetic ring magnetic field; Connected the 4th resistance (R4) of dividing potential drop effect of inductance (L1), in parallel with described electric capacity of voltage regulation (C1) again, second resistance (R2) of connecting switch triode (TR1) being shielded is connected to the base stage of described switch triode (TR1) then;
Base stage at switch triode (TR1) is connected with the 3rd resistance (R3) that triggers power supply and play its dividing potential drop effect; The collector of switch triode (TR1) is connected with turn-on power and plays first resistance (R1) of metering function.
2. inductance type velocity checking circuits according to claim 1 is characterized in that: the voltage of described triggering power supply and turn-on power is+5V.
3. inductance type velocity checking circuits according to claim 1 is characterized in that: the emitter of described switch triode (TR1) is provided with the port (I/O1) of output switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201222387U CN201078756Y (en) | 2007-08-15 | 2007-08-15 | Inductance type velocity detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201222387U CN201078756Y (en) | 2007-08-15 | 2007-08-15 | Inductance type velocity detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078756Y true CN201078756Y (en) | 2008-06-25 |
Family
ID=39570823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201222387U Expired - Lifetime CN201078756Y (en) | 2007-08-15 | 2007-08-15 | Inductance type velocity detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078756Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867338A (en) * | 2010-05-19 | 2010-10-20 | 南京德朔实业有限公司 | Speed control system of brush cutter and control method thereof |
| CN104870275A (en) * | 2012-12-20 | 2015-08-26 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for detecting a speed in a vehicle |
| CN106199044A (en) * | 2015-05-06 | 2016-12-07 | 成都凯天电子股份有限公司 | Radioprotective inductance type speed probe |
| CN110441543A (en) * | 2019-07-18 | 2019-11-12 | 浙江大学 | Core inductance formula angular speed sense measuring device and method based on magnetic saturation characteristic |
| CN111699395A (en) * | 2018-02-09 | 2020-09-22 | 克诺尔商用车制动系统有限公司 | Method and device for determining speed by means of inductive speed sensor |
-
2007
- 2007-08-15 CN CNU2007201222387U patent/CN201078756Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867338A (en) * | 2010-05-19 | 2010-10-20 | 南京德朔实业有限公司 | Speed control system of brush cutter and control method thereof |
| CN104870275A (en) * | 2012-12-20 | 2015-08-26 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for detecting a speed in a vehicle |
| CN106199044A (en) * | 2015-05-06 | 2016-12-07 | 成都凯天电子股份有限公司 | Radioprotective inductance type speed probe |
| CN111699395A (en) * | 2018-02-09 | 2020-09-22 | 克诺尔商用车制动系统有限公司 | Method and device for determining speed by means of inductive speed sensor |
| US11531040B2 (en) | 2018-02-09 | 2022-12-20 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Method and device for determining a speed by means of an inductive speed sensor |
| CN110441543A (en) * | 2019-07-18 | 2019-11-12 | 浙江大学 | Core inductance formula angular speed sense measuring device and method based on magnetic saturation characteristic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080625 |