CN101882907A - Signal converting circuit for passive revolution speed sensor - Google Patents
Signal converting circuit for passive revolution speed sensor Download PDFInfo
- Publication number
- CN101882907A CN101882907A CN 201010235938 CN201010235938A CN101882907A CN 101882907 A CN101882907 A CN 101882907A CN 201010235938 CN201010235938 CN 201010235938 CN 201010235938 A CN201010235938 A CN 201010235938A CN 101882907 A CN101882907 A CN 101882907A
- Authority
- CN
- China
- Prior art keywords
- circuit
- terminal
- counnter attack
- tach signal
- attack diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a signal converting circuit for a passive revolution speed sensor. The signal converting circuit comprises a revolution speed signal input circuit, a revolution speed signal processing circuit, an IC chip power supply circuit and a revolution speed signal output circuit, wherein the revolution speed signal input circuit is connected with the revolution speed signal processing circuit and the revolution speed signal output circuit sequentially; and the revolution speed signal output circuit is also connected with the IC chip power supply circuit. The signal converting circuit matches a revolution speed sensor outputting a sinusoidal signal with a frequency converter inputting a pulse signal and avoids the trouble of replacing a speed encoder in the revolution speed sensor or a processing circuit in the frequency converter by converting the sinusoidal signal into the pulse signal through the revolution speed signal processing circuit, and is particularly suitable for a practical system of which a motor speed measuring signal is a passive signal and a control system processing circuit is an active processing circuit, convenient and practical and low in cost as components of the signal converting circuit can be easily bought in an electronic market.
Description
Technical field
The present invention relates to the signaling conversion circuit between a kind of motor speed measuring device and the Frequency Converter Control system, particularly a kind of signal converting circuit for passive revolution speed sensor.
Background technology
Along with the fast development of power electronics, universal frequency converter is more and more universal, and universal frequency converter high performance of control technology is enough to make the control performance of alternating current machine and direct current machine to compare favourably, even has surpassed the performance of direct current machine.The control of high-performance motor at present is divided into to be had the speed control feedback and not to have speed control.Be not still waiting further improvement but there is speed control in the performance of low-speed stage, like this as a high performance of control system, it is particularly important that the performance of speed probe and signal just seem.Universal frequency converter is of a great variety in the market, the rate signal treatment circuit is also varied, but in the majority with the square wave treatment circuit, because the speed probe output signal mostly is square wave in the market, therefore, existing frequency converter and speed probe can directly mate.But on the market especially import motor of many motors is arranged also now, just be furnished with high performance output signal during manufacturing and be sinusoidal wave speed probe, this speed probe just can not be directly and input processing circuit be that the frequency converter of pulse signal directly mates, for the two can be mated, existing method is the treatment circuit of changing the speed encoder in the speed probe or changing frequency converter.But this replacing is pretty troublesome, and has increased cost of investment.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention will design the signal converting circuit for passive revolution speed sensor that a kind of sinusoidal signal with speed probe output is converted to the pulse signal that the Frequency Converter Control system can sample, to satisfy the needs of Frequency Converter Control system.
Technical solution of the present invention is achieved in that a kind of signal converting circuit for passive revolution speed sensor, comprise tach signal input circuit, tach signal treatment circuit, IC chip power power supply circuits and tach signal output circuit, described tach signal input circuit is connected with the tach signal output circuit successively with the tach signal treatment circuit, and described tach signal output circuit also is connected with IC chip power power supply circuits;
Described tach signal input circuit and tach signal output circuit have comprised the connecting terminal block of one four pin respectively;
Described tach signal treatment circuit is made up of signal processing circuit A and signal processing circuit B, described signal processing circuit A comprises resistance R 1, resistance R 2, filter capacitor C1, counnter attack diode VD1, counnter attack diode VD2 and amplifier IC1A, the left end of resistance R 1 is connected with the terminal 1 of tach signal input circuit, right-hand member successively with the upper end of filter capacitor C1, the anode of counnter attack diode VD1, the negative electrode of counnter attack diode VD2, the terminal 3 of amplifier IC1A connects, the left end of resistance R 2 is connected with the negative electrode of counnter attack diode VD2, right-hand member is connected with the terminal 1 of amplifier IC1A, the terminal 1 of described amplifier IC1A also is connected with the terminal 1 of tach signal output circuit, terminal 2 successively with the anode of counnter attack diode VD2, the negative electrode of counnter attack diode VD1, the lower end of filter capacitor C1, the terminal 2 of tach signal input circuit connects, and the lower end of described filter capacitor C1 also is connected with power supply ground; Described signal processing circuit B comprises resistance R 3, resistance R 4, filter capacitor C2, counnter attack diode VD3, counnter attack diode VD4 and amplifier IC1B, the left end of resistance R 3 is connected with the terminal 3 of tach signal input circuit, right-hand member successively with the upper end of filter capacitor C2, the anode of counnter attack diode VD3, the negative electrode of counnter attack diode VD4, the terminal 5 of amplifier IC1B connects, the left end of resistance R 4 is connected with the negative electrode of counnter attack diode VD4, right-hand member is connected with the terminal 7 of amplifier IC1B, the terminal 7 of described amplifier IC1B also is connected with the terminal 3 of tach signal output circuit, terminal 6 successively with the anode of counnter attack diode VD4, the negative electrode of counnter attack diode VD3, the lower end of filter capacitor C2, the terminal 4 of tach signal input circuit connects, and the lower end of described filter capacitor C2 also is connected with power supply ground;
Described IC1 chip power power supply circuits comprise electrochemical capacitor C4, filter capacitor C3 and counnter attack diode VD5, described electrochemical capacitor C4 is in parallel with filter capacitor C3, the upper end of described electrochemical capacitor C4 also is connected with the terminal 2 of positive source, tach signal output circuit respectively, the lower end of electrochemical capacitor C4 also is connected with the anode of power supply ground, counnter attack diode VD5 respectively, and the negative electrode of counnter attack diode VD5 is connected with the terminal 3 of tach signal output circuit.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention has converted sinusoidal signal to pulse signal by the tach signal treatment circuit, thereby realized the coupling of speed probe with the frequency converter of input pulse signal of output sinusoidal signal, avoided changing the trouble of the treatment circuit of speed encoder in the speed probe or replacing frequency converter.For the motor speed measuring signal of reality is that passive signal and control system treatment circuit are system's particularly suitables of active treatment circuit
2, velocity transducer output signal of the present invention is made up of the signal of 90 ° of two-way phase phasic differences, has therefore designed the identical signal processing circuit of two-way function, can also design the multiple signals treatment circuit as required.
3, because the present invention is made up of components and parts such as common electric capacity, resistance, amplifiers, conveniently build change-over circuit with cystosepiment as required at any time, and process is waited in the making sheet that need not to wait long.
4, the used components and parts of the present invention electronic market can have been bought everywhere, and is convenient and practical, cheap.
Description of drawings
The present invention only has an accompanying drawing, wherein:
Fig. 1 is the signal converting circuit for passive revolution speed sensor schematic diagram.
Among the figure, 1, the tach signal input circuit, 2, the tach signal treatment circuit, 3, IC1 chip power power supply circuits, 4, the tach signal output circuit.5, sinusoidal rotating speed input signal, 6, the pulse rotational speed output signal, 21, signal processing circuit A, 22, signal processing circuit B.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.As shown in Figure 1, a kind of signal converting circuit for passive revolution speed sensor, comprise tach signal input circuit 1, tach signal treatment circuit 2, IC chip power power supply circuits 3 and tach signal output circuit 4, described tach signal input circuit 1 is connected with tach signal output circuit 4 successively with tach signal treatment circuit 2, and described tach signal output circuit 4 also is connected with IC chip power power supply circuits 3; Described tach signal input circuit 1 and tach signal output circuit 4 have comprised the connecting terminal block of one four pin respectively; Described tach signal treatment circuit 2 is made up of signal processing circuit A21 and signal processing circuit B22, described signal processing circuit A21 comprises resistance R 1, resistance R 2, filter capacitor C1, counnter attack diode VD1, counnter attack diode VD2 and amplifier IC1A, the left end of resistance R 1 is connected with the terminal 1 of tach signal input circuit 1, right-hand member successively with the upper end of filter capacitor C1, the anode of counnter attack diode VD1, the negative electrode of counnter attack diode VD2, the terminal 3 of amplifier IC1A connects, the left end of resistance R 2 is connected with the negative electrode of counnter attack diode VD2, right-hand member is connected with the terminal 1 of amplifier IC1A, the terminal 1 of described amplifier IC1A also is connected with the terminal 1 of tach signal output circuit 4, terminal 2 successively with the anode of counnter attack diode VD2, the negative electrode of counnter attack diode VD1, the lower end of filter capacitor C1, the terminal 2 of tach signal input circuit 1 connects, and the lower end of described filter capacitor C1 also is connected with power supply ground; Described signal processing circuit B22 comprises resistance R 3, resistance R 4, filter capacitor C2, counnter attack diode VD3, counnter attack diode VD4 and amplifier IC1B, the left end of resistance R 3 is connected with the terminal 3 of tach signal input circuit 1, right-hand member successively with the upper end of filter capacitor C2, the anode of counnter attack diode VD3, the negative electrode of counnter attack diode VD4, the terminal 5 of amplifier IC1B connects, the left end of resistance R 4 is connected with the negative electrode of counnter attack diode VD4, right-hand member is connected with the terminal 7 of amplifier IC1B, the terminal 7 of described amplifier IC1B also is connected with the terminal 3 of tach signal output circuit 4, terminal 6 successively with the anode of counnter attack diode VD4, the negative electrode of counnter attack diode VD3, the lower end of filter capacitor C2, the terminal 4 of tach signal input circuit 1 connects, and the lower end of described filter capacitor C2 also is connected with power supply ground; Described IC1 chip power power supply circuits 3 comprise electrochemical capacitor C4, filter capacitor C3 and counnter attack diode VD5, described electrochemical capacitor C4 is in parallel with filter capacitor C3, the upper end of described electrochemical capacitor C4 also is connected with the terminal 2 of positive source, tach signal output circuit 4 respectively, the lower end of electrochemical capacitor C4 also is connected with the anode of power supply ground, counnter attack diode VD5 respectively, and the negative electrode of counnter attack diode VD5 is connected with the terminal 3 of tach signal output circuit 4.
Operation principle of the present invention is as follows: because two paths of signals treatment circuit function is identical, be that example is introduced signal processing of the present invention with speed probe 1 below.The sinusoidal rotating speed input signal 5 of electrode is sent into signal processing circuit A21 by the terminal 1 and the terminal 2 of tach signal input circuit 1, when signal during for positive half cycle, sinusoidal signal is through resistance R 1 current limliting, filter capacitor C1 filtering, deliver to terminal 3 and the terminal 2 of amplifier IC1A through counnter attack diode VD1, the signal polarity of terminal 3 is for just, the signal polarity of terminal 2 is for negative, resistance R 2 connects terminal 1 and the terminal 3 of amplifier IC1A, according to digital circuit " empty short " " empty disconnected " principle, when the current potential of the terminal 3 of amplifier IC1A is higher than the current potential of terminal 2, lead-out terminal 1 is oppositely output, level is " height ", be amplifier IC1A work high level, be+15V at this; When the current potential of the terminal 3 of amplifier IC1A is lower than the current potential of terminal 2, lead-out terminal 1 output oppositely, level is low, is GND at this power supply electrical level for amplifier IC1A.Through zero passage like this conversion, being input as sinusoidal tach signal, promptly to change duty ratio for same frequency be 50% pulse rotational speed output signal 6, this signal outputed to the terminal 1 of tach signal output circuit 4.Another road principle of signal conversion is identical therewith.Adopt this treatment circuit can satisfy the processing needs of a transducer two-way output signal.
Claims (1)
1. signal converting circuit for passive revolution speed sensor, it is characterized in that: comprise tach signal input circuit (1), tach signal treatment circuit (2), IC chip power power supply circuits (3) and tach signal output circuit (4), described tach signal input circuit (1) is connected with tach signal output circuit (4) successively with tach signal treatment circuit (2), and described tach signal output circuit (4) also is connected with IC chip power power supply circuits (3);
Described tach signal input circuit (1) and tach signal output circuit (4) have comprised the connecting terminal block of one four pin respectively;
Described tach signal treatment circuit (2) is made up of signal processing circuit A (21) and signal processing circuit B (22), described signal processing circuit A (21) comprises resistance R 1, resistance R 2, filter capacitor C1, counnter attack diode VD1, counnter attack diode VD2 and amplifier IC1A, the left end of resistance R 1 is connected with the terminal 1 of tach signal input circuit (1), right-hand member successively with the upper end of filter capacitor C1, the anode of counnter attack diode VD1, the negative electrode of counnter attack diode VD2, the terminal 3 of amplifier IC1A connects, the left end of resistance R 2 is connected with the negative electrode of counnter attack diode VD2, right-hand member is connected with the terminal 1 of amplifier IC1A, the terminal 1 of described amplifier IC1A also is connected with the terminal 1 of tach signal output circuit (4), terminal 2 successively with the anode of counnter attack diode VD2, the negative electrode of counnter attack diode VD1, the lower end of filter capacitor C1, the terminal 2 of tach signal input circuit (1) connects, and the lower end of described filter capacitor C1 also is connected with power supply ground; Described signal processing circuit B (22) comprises resistance R 3, resistance R 4, filter capacitor C2, counnter attack diode VD3, counnter attack diode VD4 and amplifier IC1B, the left end of resistance R 3 is connected with the terminal 3 of tach signal input circuit (1), right-hand member successively with the upper end of filter capacitor C2, the anode of counnter attack diode VD3, the negative electrode of counnter attack diode VD4, the terminal 5 of amplifier IC1B connects, the left end of resistance R 4 is connected with the negative electrode of counnter attack diode VD4, right-hand member is connected with the terminal 7 of amplifier IC1B, the terminal 7 of described amplifier IC1B also is connected with the terminal 3 of tach signal output circuit (4), terminal 6 successively with the anode of counnter attack diode VD4, the negative electrode of counnter attack diode VD3, the lower end of filter capacitor C2, the terminal 4 of tach signal input circuit (1) connects, and the lower end of described filter capacitor C2 also is connected with power supply ground;
Described IC1 chip power power supply circuits (3) comprise electrochemical capacitor C4, filter capacitor C3 and counnter attack diode VD5, described electrochemical capacitor C4 is in parallel with filter capacitor C3, the upper end of described electrochemical capacitor C4 also is connected with the terminal 2 of positive source, tach signal output circuit (4) respectively, the lower end of electrochemical capacitor C4 also is connected with the anode of power supply ground, counnter attack diode VD5 respectively, and the negative electrode of counnter attack diode VD5 is connected with the terminal 3 of tach signal output circuit (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010235938 CN101882907A (en) | 2010-07-23 | 2010-07-23 | Signal converting circuit for passive revolution speed sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010235938 CN101882907A (en) | 2010-07-23 | 2010-07-23 | Signal converting circuit for passive revolution speed sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101882907A true CN101882907A (en) | 2010-11-10 |
Family
ID=43054826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201010235938 Pending CN101882907A (en) | 2010-07-23 | 2010-07-23 | Signal converting circuit for passive revolution speed sensor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101882907A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109557332A (en) * | 2018-12-25 | 2019-04-02 | 西安翔迅科技有限责任公司 | A kind of tach signal conversion equipment based on Taylor algorithm |
CN110161276A (en) * | 2019-04-29 | 2019-08-23 | 株洲电力机车电机修造有限公司 | A kind of velocity sensor for pulling motor of railway vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101022248A (en) * | 2006-11-09 | 2007-08-22 | 智勇 | Universal control device for frequency transformer and control method thereof |
CN201285598Y (en) * | 2008-07-30 | 2009-08-05 | 中国北车集团大连机车研究所有限公司 | AC/DC isolation signal transducer |
CN201754573U (en) * | 2010-07-23 | 2011-03-02 | 中国北车股份有限公司大连电力牵引研发中心 | Passive revolution sensor signal converting circuit |
-
2010
- 2010-07-23 CN CN 201010235938 patent/CN101882907A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101022248A (en) * | 2006-11-09 | 2007-08-22 | 智勇 | Universal control device for frequency transformer and control method thereof |
CN201285598Y (en) * | 2008-07-30 | 2009-08-05 | 中国北车集团大连机车研究所有限公司 | AC/DC isolation signal transducer |
CN201754573U (en) * | 2010-07-23 | 2011-03-02 | 中国北车股份有限公司大连电力牵引研发中心 | Passive revolution sensor signal converting circuit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109557332A (en) * | 2018-12-25 | 2019-04-02 | 西安翔迅科技有限责任公司 | A kind of tach signal conversion equipment based on Taylor algorithm |
CN110161276A (en) * | 2019-04-29 | 2019-08-23 | 株洲电力机车电机修造有限公司 | A kind of velocity sensor for pulling motor of railway vehicle |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101324633A (en) | Rotary speed sensor with bus interface for automobile | |
CN101957806A (en) | Peripheral component interconnection standard acquisition device for synchronous serial interface signal | |
CN201754573U (en) | Passive revolution sensor signal converting circuit | |
CN105445535A (en) | Digital current transducer and detection device | |
CN202903119U (en) | Detection circuit for displacement sensor | |
CN101882907A (en) | Signal converting circuit for passive revolution speed sensor | |
CN102621345A (en) | Detection method and device of rotation speed of generator | |
CN203722530U (en) | Variable frequency air conditioner, air condition compressor controller and current sampling circuit thereof | |
CN102590589A (en) | 4-20mA current transmitter circuit | |
CN102981042B (en) | Three-phase current detection circuit for frequency converter | |
CN103439556A (en) | Optical coupling isolation linear detection circuit and implementation method thereof | |
CN202533482U (en) | 4-20 ma current transmitter circuit | |
CN202940789U (en) | Frequency current isolation conversion module | |
CN203812008U (en) | Analog signal collector | |
CN112367075B (en) | Single-interface multifunctional signal processing circuit | |
CN210893413U (en) | Wireless vibration sensor with high integration level | |
CN204556718U (en) | A kind of based on monolithic processor controlled hyperchannel small area analysis real-time acquisition system | |
CN204761359U (en) | Hall calbiration system that motor drive used | |
CN207020235U (en) | A kind of frequency converter three-phase exports bus list resistor current sample circuit | |
CN203289377U (en) | Frequency-conversion driving board and control-board interface circuit | |
CN201820220U (en) | Peripheral-components-interconnection acquisition device for synchronous serial interface signals | |
CN201340273Y (en) | Automobile direction sensor | |
CN203057113U (en) | Periodic pulse width/voltage signal unipolar precision converting circuit | |
CN201360220Y (en) | Frequency converter current signal converting circuit | |
CN204578423U (en) | Based on the low-power machine drive system of FPGA |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20101110 |
|
C20 | Patent right or utility model deemed to be abandoned or is abandoned |