CN204758622U - Magnetoelectric tachometric transducer's processing circuit - Google Patents
Magnetoelectric tachometric transducer's processing circuit Download PDFInfo
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- CN204758622U CN204758622U CN201520492824.5U CN201520492824U CN204758622U CN 204758622 U CN204758622 U CN 204758622U CN 201520492824 U CN201520492824 U CN 201520492824U CN 204758622 U CN204758622 U CN 204758622U
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- filter circuit
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Abstract
The utility model discloses a magnetoelectric tachometric transducer's processing circuit, including voltage signal input line, low pass filter circuit, second resistance, third resistance, the 5th resistance, amplifier, comparator and two -value signal output line, wherein, the input/output of low pass filter circuit end respectively with voltage signal input line and second ohmic connection, the other end that low pass filter circuit output is connected relatively to second resistance is held with the inverting input of amplifier and is connected, third resistance both ends are connected with the inverting input end and the output of amplifier respectively, and the 5th resistance both ends are connected with the output of amplifier and the inverting input end of comparator respectively, and two -value signal output line is connected with the output of comparator. The utility model has the advantages that the whole structure is simple it is single, use components and parts few, with low costs, and can guarantee the warp the utility model discloses the stability of the signal after the processing.
Description
Technical field
The utility model relates to sensor, specifically the signal processing circuit of magnetoelectric tachometric transducer.
Background technology
Sensor be a kind of with certain degree of accuracy measured convert to have with it determine corresponding relation, be convenient to the measurement mechanism of certain physical quantity applied.It is the loudspeaker of acquisition target and infosystem, is system senses, obtains and the window of Detection Information.For the object rotated, its rotating speed is difficult to direct-detection, generally all adopts indirect method to carry out, and namely by various sensor, rotating speed is become other physical quantity, as mechanical quantity, electricity, magnetic and light etc., then shows.
Speed probe is the one in numerous sensor type, and it plays an important role in departments such as industry, agricultural and traffic, and is widely applied in these areas.Such as, in machine tooling, monitor the rotating speed of main shaft with speed probe; In communications and transportation, speed probe is mainly used to measure the rotating speed of rotary part and the travel speeds of automobile such as big-and-middle-sized motorcar engine main shaft, power output shaft, axletree; Agriculturally, speed probe is mainly used to monitor the parts that large-scale combined harvester engine spindle, detachment roller, cereal conveying main spindle etc. rotate, so that Timeliness coverage is abnormal and process in time, thus prevent the damage of part, obtain the benefit arranged.
Speed probe can be divided into according to the difference of principle of work: magneto-electric, photo-electric, centrifugal, electric vortex type, Hall-type etc.Wherein, magnetoelectric tachometric transducer, based on electromagnetic induction principle, is interacted by magnetoelectricity and the rotating speed of rotating shaft is converted to corresponding induction electromotive force, then through processing and analyze the actual speed that just can obtain rotating shaft to output induced electromotive force signal.The signal of magnetoelectric tachometric transducer collection need be converted to through signal transacting the binary signal only having high voltage and low-voltage, so that Signal Terminal process provides signal source for the chip such as single-chip microcomputer or DSP is main body.Current magnetoelectric tachometric transducer involved components and parts when realizing signal conversion are many, and cost is high, and after process, the stability of signal usually can not be guaranteed.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of signal processing circuit of magnetoelectric tachometric transducer, and its structure is simple, and use components and parts few, cost is low, and can ensure the stability processing rear signal.
The utility model solves the problem and is achieved through the following technical solutions: the signal processing circuit of magnetoelectric tachometric transducer, comprise voltage signal input line, low-pass filter circuit, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, amplifier, comparer and binary signal output line, the input/output terminal of described low-pass filter circuit is connected with voltage signal input line and the second resistance respectively, the inverting input of the other end and amplifier that described second resistance connects low-pass filter circuit output terminal is relatively connected, described 3rd resistance two ends are connected with the inverting input of amplifier and output terminal respectively, described 4th resistance one end is connected with the in-phase input end of amplifier, its other end ground connection, described 5th resistance two ends are connected with the output terminal of amplifier and the inverting input of comparer respectively, described 6th resistance one end is connected with the in-phase input end of comparer, its other end ground connection, described binary signal output line is connected with the output terminal of comparer.During the utility model application, sensor output voltage signal inputs through voltage signal input line, first the higher interference wave of low-pass filter circuit filtered signal medium frequency is passed through, and then by amplifier, signal is amplified, signal after amplification is through comparer, by comparer, the signal of simulation is converted to the binary signal only having high voltage and low-voltage, then for the Signal Terminal process being main body by the chip such as single-chip microcomputer or DSP provides signal source.
Further, described low-pass filter circuit comprises the first resistance and the first electric capacity, described first resistance two ends are connected with voltage signal input line and the second resistance respectively, and described first electric capacity one end is connected on the circuit between the first resistance and the second resistance, its other end ground connection.
Further, the signal processing circuit of magnetoelectric tachometric transducer, also comprise the first diode and the second diode, the positive pole of described first diode and the negative pole of the second diode are all connected on the circuit between low-pass filter circuit and the second resistance, the negative pole of the first diode and the equal ground connection of positive pole of the second diode.First diode of the present utility model and the second diode form clamping circuit, are clamped down on by signal at ± 0.7V, can promote the stability of the utility model output signal.
Further, the signal processing circuit of magnetoelectric tachometric transducer, also comprises the 7th resistance, and described 7th resistance one end is connected on the output terminal of comparer, its other end external power supply.
In sum, the utility model has following beneficial effect: the utility model one-piece construction is simple, use components and parts are few, be convenient to realize, cost is low, first the voltage signal that sensor exports is passed through low-pass filter circuit filtered signal medium frequency higher interference wave during the utility model application, promote the stability of the utility model signal transacting, again through amplifier amplifies signals, and then carry out signal by comparer and be converted to binary signal, this can ensure the stability that the utility model outputs signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
Name in accompanying drawing corresponding to Reference numeral is called: R1, the first resistance, R2, the second resistance, R3, the 3rd resistance, R4, the 4th resistance, R5, the 5th resistance, R6, the 6th resistance, R7, the 7th resistance, A1, amplifier, A2, comparer, C1, the first electric capacity.
Embodiment
Below in conjunction with embodiment and accompanying drawing, detailed description is further done to the utility model, but embodiment of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, the signal processing circuit of magnetoelectric tachometric transducer, comprise voltage signal input line, low-pass filter circuit, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, amplifier A1, comparer A2 and binary signal output line, wherein, the input/output terminal of low-pass filter circuit is connected with voltage signal input line and the second resistance R2 respectively, the other end that second resistance R2 connects low-pass filter circuit output terminal is relatively connected with the inverting input of amplifier A1, 3rd resistance R3 two ends are connected with the inverting input of amplifier A1 and output terminal respectively, 4th resistance R4 is connected with the in-phase input end of amplifier A1, its other end ground connection, 5th resistance R5 two ends are connected with the output terminal of amplifier A1 and the inverting input of comparer A2 respectively, 6th resistance R6 one end is connected with the in-phase input end of comparer A2, its other end ground connection, binary signal output line is connected with the output terminal of comparer A2.7th resistance R7 one end is connected on the output terminal of comparer A2, its other end external power supply.The amplifier A1 of the present embodiment adopts the two computing sign-changing amplifier LM358 of low-power consumption to realize, and comparer A2 adopts integrated voltage comparator LM393 to realize.When the present embodiment is applied, amplifier A1 adopts 12V Power supply, and comparer A2 adopts 5V Power supply.
The low-pass filter circuit of the present embodiment comprises the first resistance R1 and the first electric capacity C1, wherein, first resistance R1 two ends are connected with voltage signal input line and the second resistance R2 respectively, and first electric capacity C1 one end is connected on the circuit between the first resistance R1 and the second resistance R2, its other end ground connection.
The present embodiment also comprises clamp circuit, wherein, clamp circuit is realized by the first diode D1 and the second diode D2, the positive pole of the first diode D1 and the negative pole of the second diode D2 are all connected on the circuit between low-pass filter circuit and the second resistance R2, the negative pole of the first diode D1 and the equal ground connection of positive pole of the second diode D2.
During the present embodiment application, sensor output voltage signal first through the interference wave that low-pass filter circuit filtering medium frequency is higher, then is clamped down on signal through clamp circuit, and then carries out signal amplification and signal conversion.
Above content is the further description done the utility model in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (4)
1. the signal processing circuit of magnetoelectric tachometric transducer, it is characterized in that, comprise voltage signal input line, low-pass filter circuit, second resistance (R2), 3rd resistance (R3), 4th resistance (R4), 5th resistance (R5), 6th resistance (R6), amplifier (A1), comparer (A2) and binary signal output line, the input/output terminal of described low-pass filter circuit is connected with voltage signal input line and the second resistance (R2) respectively, the other end that described second resistance (R2) connects low-pass filter circuit output terminal is relatively connected with the inverting input of amplifier (A1), described 3rd resistance (R3) two ends are connected with the inverting input of amplifier (A1) and output terminal respectively, described 4th resistance (R4) is connected with the in-phase input end of amplifier (A1), its other end ground connection, described 5th resistance (R5) two ends are connected with the output terminal of amplifier (A1) and the inverting input of comparer (A2) respectively, described 6th resistance (R6) one end is connected with the in-phase input end of comparer (A2), its other end ground connection, described binary signal output line is connected with the output terminal of comparer (A2).
2. the signal processing circuit of magnetoelectric tachometric transducer according to claim 1, it is characterized in that, described low-pass filter circuit comprises the first resistance (R1) and the first electric capacity (C1), described first resistance (R1) two ends are connected with voltage signal input line and the second resistance (R2) respectively, described first electric capacity (C1) one end is connected on the circuit between the first resistance (R1) and the second resistance (R2), its other end ground connection.
3. the signal processing circuit of magnetoelectric tachometric transducer according to claim 1, it is characterized in that, also comprise the first diode (D1) and the second diode (D2), the positive pole of described first diode (D1) and the negative pole of the second diode (D2) are all connected on the circuit between low-pass filter circuit and the second resistance (R2), the negative pole of the first diode (D1) and the equal ground connection of positive pole of the second diode (D2).
4. the signal processing circuit of magnetoelectric tachometric transducer according to claim 1, is characterized in that, also comprises the 7th resistance (R7), and described 7th resistance (R7) one end is connected on the output terminal of comparer (A2), its other end external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492824.5U CN204758622U (en) | 2015-07-10 | 2015-07-10 | Magnetoelectric tachometric transducer's processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492824.5U CN204758622U (en) | 2015-07-10 | 2015-07-10 | Magnetoelectric tachometric transducer's processing circuit |
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| Publication Number | Publication Date |
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| CN204758622U true CN204758622U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492824.5U Expired - Fee Related CN204758622U (en) | 2015-07-10 | 2015-07-10 | Magnetoelectric tachometric transducer's processing circuit |
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| CN (1) | CN204758622U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991083A (en) * | 2015-07-10 | 2015-10-21 | 四川奇胜科技有限公司 | Module for output signal processing in magneto-electric rotating speed sensor |
| CN109738015A (en) * | 2019-01-11 | 2019-05-10 | 清华大学 | Signal processing apparatus |
-
2015
- 2015-07-10 CN CN201520492824.5U patent/CN204758622U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991083A (en) * | 2015-07-10 | 2015-10-21 | 四川奇胜科技有限公司 | Module for output signal processing in magneto-electric rotating speed sensor |
| CN109738015A (en) * | 2019-01-11 | 2019-05-10 | 清华大学 | Signal processing apparatus |
| CN109738015B (en) * | 2019-01-11 | 2019-11-22 | 清华大学 | Signal processing apparatus |
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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: 20151111 Termination date: 20190710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |