CN104807574A - Torque sensor based on voltage compensation - Google Patents
Torque sensor based on voltage compensation Download PDFInfo
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- CN104807574A CN104807574A CN201510201898.3A CN201510201898A CN104807574A CN 104807574 A CN104807574 A CN 104807574A CN 201510201898 A CN201510201898 A CN 201510201898A CN 104807574 A CN104807574 A CN 104807574A
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Abstract
The invention discloses a torque sensor based on voltage compensation. The torque sensor is mainly composed of a torsion shaft (1), an oscillator (4), a current collection ring (3) arranged on the torsion shaft (1), a strain gauge pasted on the torsion shaft (1) and connected with the current collection ring (3), a frequency conversion module (7) connected with the current collection ring (3), a signal phase locking processing system (5) connected with the frequency conversion module (7), and a display instrument (6) connected with the signal phase locking processing system (5). The torque sensor is characterized in that a voltage compensation module (8) is arranged between the current collection ring (3) and the oscillator (4). The torque sensor has the voltage compensation function, can compensate for voltage when working voltage fluctuates, and the unstable phenomenon caused by voltage fluctuation is avoided.
Description
Technical field
The present invention relates to a kind of sensor, specifically refer to a kind of torque sensor based on voltage compensation.
Background technology
Along with the fast development of modern science and technology, torque measurement techniques has become the new branch of measuring technology.The application of torque measurement is more and more extensive, arrive greatly aircraft, as oceangoing ship, drilling well, generating set and metallurgical and mining equipment etc., littlely arrive micromotor, household electrical appliance and clock and watch etc.Torque measurement is the requisite contents such as various mechanical new product development, quality inspection, optimal control, monitoring of working condition and fault diagnosis.Torque measurement accurately to shorten modern machinery and equipment lead time, improve equipment performance, reduce development cost there is important effect.
Torque sensor operationally its operating voltage can fluctuate unavoidably, and traditional torque sensor then can affect the stability of its performance because of the fluctuation of operating voltage, thus carrys out very large obstacle to torque capacity measuring tape.Therefore, a kind of torque sensor not being subject to voltage influence of fluctuations is provided to be then the current task of top priority.
Summary of the invention
The object of the invention is to overcome the defect that conventional torque sensor is easily subject to operating voltage influence of fluctuations, a kind of torque sensor based on voltage compensation is provided.
Object of the present invention is achieved through the following technical solutions: a kind of torque sensor based on voltage compensation, primarily of torsion shaft, oscillator, be arranged on the collector ring in torsion shaft, be pasted onto the foil gauge be connected in torsion shaft and with collector ring, the frequency translation module be connected with collector ring, the signal locking disposal system be connected with frequency translation module, the display instrument be connected with signal locking disposal system, is also provided with voltage compensation module between collector ring and oscillator, described voltage compensation module is by compensation chips U2, triode VT9, triode VT10, positive pole is connected with the DRC pin of compensation chips U2, the polar capacitor C10 that negative pole is then connected with the SWC pin of compensation chips U2 after inductance L 6, N pole is connected with the IPK pin of compensation chips U2, the diode D9 that P pole is then connected with the VCC pin of compensation chips U2 after resistance R21, one end is connected with the GND pin of compensation chips U2 after resistance R23, the resistance R22 of other end ground connection, positive pole is connected with the SWE pin of compensation chips U2, the polar capacitor C11 of minus earth, N pole is connected with the SWC pin of compensation chips U2, the voltage stabilizing diode D10 that P pole is then connected with the emitter of triode VT10, one end is connected with the SWE pin of compensation chips U2, the other end is then as the resistance R24 of an output stage of circuit, and positive pole is connected with the collector of triode VT10, negative pole then forms as the polar capacitor C12 of another output stage of circuit after diode D11, the base stage of described triode VT9 is connected with the VCC pin of compensation chips U2, its collector is then connected with the tie point of resistance R23 with resistance R22, the CLL pin of described compensation chips U2 is connected with the collector of triode VT9, GND pin is connected with the negative pole of polar capacitor C11, its TC pin is then connected with the base stage of triode VT10, the P pole of described diode D9 is also connected with the negative pole of polar capacitor C10.
Further, described frequency translation module is by process chip U1, triode VT7, triode VT8, N pole is connected with the emitter of triode VT7 after resistance R18, P pole is then in turn through inductance L 5, resistance R13, the diode D7 be connected with the base stage of triode VT7 after resistance R14 and diode D8, positive pole is connected with the LBD pin of process chip U1, the polar capacitor C6 that negative pole is then connected with the tie point of resistance R14 with diode D8, positive pole is connected with the CX pin of process chip U1, the polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor C6, one end is connected with the N pole of diode D7, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C7 after resistance R15, one end is connected with the VFB pin of process chip U1, the resistance R17 that the other end is then connected with the base stage of triode VT7, positive pole is connected with the emitter of triode VT8, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT7, the resistance R19 that the other end is then connected with the negative pole of polar capacitor C9 after resistance R20, and form with the polar capacitor C8 that resistance R19 is in parallel, the LX pin of described process chip U1 is connected with the P pole of diode D7, its LBR pin is all connected with the N pole of diode D7 with IC pin as the input end of circuit, GND pin ground connection, VS pin together with the tie point of resistance R13 with inductance L 5, the base stage of described triode VT8 is connected with the tie point of resistance R20 with resistance R19, its emitter is then connected with the collector of triode VT7, collector is then connected with the N pole of diode D7.
Described signal locking disposal system is by front end input circuit, and the phase lock circuitry be connected with front end input circuit, the signal amplification circuit be connected with phase lock circuitry, the change-over circuit be connected with signal amplification circuit forms.
Described front end input circuit comprises resistance R1, resistance R2, inductance L 1, inductance L 2, diode D1, diode D2, diode D3 and electric capacity C1, the P pole ground connection of described diode D1, N pole is then connected with the N pole of diode D2 after polar capacitor C1, one end of resistance R1 is connected with the N pole of diode D1, the other end is then as an input pole of circuit, one end of resistance R2 is connected with the N pole of diode D1, the other end is then connected with phase lock circuitry, one end of inductance L 2 is connected with the N pole of diode D1 after resistance R2, the other end is then connected with the p pole of diode D2, the N pole of described diode D2 after inductance L 1 as another input pole of circuit, P pole is connected with phase lock circuitry, the N pole of diode D3 is connected with the P pole of diode D2, ground connection while P pole is then connected with phase lock circuitry.
Described phase lock circuitry is by field effect transistor Q1, triode VT1, triode VT2, the polar capacitor C2 that positive pole is connected with the emitter of triode VT1 after resistance R3, negative pole is then connected with the base stage of triode VT1, the resistance R4 that one end is connected with the collector of triode VT1, the other end is connected with the collector of triode VT2 after inductance L 4, the resistance R6 that one end is connected with the base stage of triode VT2, the other end is connected with signal amplification circuit, and one end is connected with the base stage of triode VT2 after inductance L 3, the resistance R5 of other end ground connection forms; The grid of described field effect transistor Q1 is connected with the N pole of diode D3, source electrode is connected with the base stage of triode VT2, it drains and be then connected with the collector of triode VT1, the collector of described triode VT1 is connected with the tie point of inductance L 2 with resistance R2, its base stage is then connected with signal amplification circuit, and the collector of described triode VT2 is respectively with the P pole of diode D3 and signal amplification circuit is connected, its grounded emitter.
Described signal amplification circuit is by amplifier P1, triode VT3, triode VT4, positive pole is connected with the base stage of triode VT1 after resistance R7, the polar capacitor C4 that negative pole is then connected with the positive pole of amplifier P1, positive pole is connected with the negative pole of amplifier P1 after resistance R8, the polar capacitor C3 that negative pole is then connected with the base stage of triode VT2 after resistance R6, positive pole is connected with the negative pole of polar capacitor C3, the electrode capacitance C5 that negative pole is connected with change-over circuit, one end is connected with the emitter of triode VT4, the resistance R9 that the other end is connected with the negative pole of amplifier P1, one end is connected with the base stage of triode VT4, the resistance R10 that the other end is connected with the base stage of triode VT1, and N pole is connected with the base stage of triode VT1, the voltage stabilizing diode D4 of P pole ground connection forms, the base stage of described triode VT3 is connected with the collector of triode VT2, its emitter is connected with the negative pole of polar capacitor C3, collector is connected with the base stage of triode VT1, and the collector of described triode VT4 is connected with change-over circuit respectively with the output terminal of amplifier P1.
Described change-over circuit is by conversion chip U, field effect transistor Q2, triode VT5, triode VT6, rejection gate A, the diode D5 that the negative pole of P pole AND OR NOT gate A is connected, N pole is connected with the IN+ pin of conversion chip U, the diode D6 that N pole is connected with the drain electrode of field effect transistor Q2, P pole is then connected with the OUT pin of conversion chip U after resistance R12, the resistance R11 that one end is connected with the base stage of triode VT5, the other end is then connected with the source electrode of field effect transistor Q2 forms, the positive pole of described rejection gate A is connected with the collector of triode VT4, output terminal is then connected with the emitter of triode VT5, the IN+ pin of described conversion chip U is connected with the output terminal of amplifier P1, its IN-pin is then connected with the negative pole of polar capacitor C5, GND pin ground connection, OUT pin is also connected with the grid of field effect transistor Q2, VCC pin connects 15V voltage, the output terminal of the base stage AND OR NOT gate A of described triode VT5 is connected, collector is connected with the base stage of triode VT6, the collector of triode VT6 is connected with the emitter of triode VT5, its emitter is then connected with the P pole of diode D6.
Described conversion chip U is LM393 type integrated chip, and process chip U1 is MAX630 integrated chip, and compensation chips U2 is MC34063A/E integrated circuit.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can change signal frequency, signal suppressing large for fluctuation in certain frequency range, thus can improve the measuring accuracy of torque sensor.
(2) the present invention has voltage compensating function, from making compensation to voltage, can avoid the existing picture of instability caused because of voltage fluctuation when fluctuation appears in operating voltage.
(3) structure of the present invention is simple, easy and simple to handle, is suitable for promoting.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is signal locking disposal system electrical block diagram of the present invention;
Fig. 3 is frequency translation module structural representation of the present invention;
Fig. 4 is voltage compensation modular circuit structural representation of the present invention.
Reference numeral name in above accompanying drawing is called:
1-torsion shaft, 2-foil gauge, 3-collector ring, 4-oscillator, 5-signal locking disposal system, 6-display instrument, 7-frequency translation module, 8-voltage compensation module, 51-front end input circuit, 52-phase lock circuitry, 53-signal amplification circuit, 54-change-over circuit.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the present invention is primarily of to be arranged in equipment under test rotating shaft and as the torsion shaft 1 of electro-mechanical conversion element, be arranged on the collector ring 3 in torsion shaft 1, be pasted onto the foil gauge 2 be connected in torsion shaft 1 and with collector ring 3, the voltage compensation module 8 be connected with collector ring 3, the oscillator 4 be connected with voltage compensation module 8, the frequency translation module 7 be connected with collector ring 3, the signal locking disposal system 5 be connected with frequency translation module 7, and the display instrument 6 be connected with signal locking disposal system 5 forms.
When equipment under test rotates, torsion shaft 1 is driven, then measures the torque signal of torsion shaft 1 by the distortion of foil gauge 2, and signal is flowed to collector ring 3.The effect of collector ring 3 is drawn from the torsion shaft 1 be rotating by the lead-in wire of foil gauge 2, and the torque signal that namely foil gauge 2 collects is transferred to voltage compensation module 8 and frequency translation module 7 by collector ring 3; Display instrument 6 is for showing the torque value of equipment under test.And signal locking disposal system 5 is for carrying out Phase Processing to torque signal, frequency translation module 7, for changing the frequency of torque signal, makes signal frequency more stable.Voltage compensation module 8, for making compensation to the operating voltage of fluctuation, makes torque sensor from the interference of fluctuation voltage.
Wherein, display instrument 6, torsion shaft 1, foil gauge 2, collector ring 3 and oscillator 4 all adopt existing technology to realize.
As shown in Figure 2, this signal locking disposal system 5 is by front end input circuit 51, and the phase lock circuitry 52 be connected with front end input circuit 51, the signal amplification circuit 53 be connected with phase lock circuitry 52, the change-over circuit 54 be connected with signal amplification circuit 53 forms.
Described front end input circuit 51 comprises resistance R1, resistance R2, inductance L 1, inductance L 2, diode D1, diode D2, diode D3 and electric capacity C1.During connection, the P pole ground connection of described diode D1, N pole is then connected with the N pole of diode D2 after polar capacitor C1, one end of resistance R1 is connected with the N pole of diode D1, the other end is then as an input pole of circuit, one end of resistance R2 is connected with the N pole of diode D1, the other end is then connected with phase lock circuitry 52, one end of inductance L 2 is connected with the N pole of diode D1 after resistance R2, the other end is then connected with the p pole of diode D2, the N pole of described diode D2 after inductance L 1 as another input pole of circuit, P pole is connected with phase lock circuitry 52, the N pole of diode D3 is connected with the P pole of diode D2, ground connection while P pole is then connected with phase lock circuitry 52.
Phase lock circuitry 52 can carry out Phase Processing to torque signal, phase place after process is more stable, it is by field effect transistor Q1, triode VT1, triode VT2, positive pole is connected with the emitter of triode VT1 after resistance R3, the polar capacitor C2 that negative pole is then connected with the base stage of triode VT1, one end is connected with the collector of triode VT1, the resistance R4 that the other end is connected with the collector of triode VT2 after inductance L 4, one end is connected with the base stage of triode VT2, the resistance R6 that the other end is connected with signal amplification circuit 53, and one end is connected with the base stage of triode VT2 after inductance L 3, the resistance R5 of other end ground connection forms.The grid of described field effect transistor Q1 is connected with the N pole of diode D3, source electrode is connected with the base stage of triode VT2, it drains and be then connected with the collector of triode VT1, the collector of described triode VT1 is connected with the tie point of inductance L 2 with resistance R2, its base stage is then connected with signal amplification circuit 53, and the collector of described triode VT2 is respectively with the P pole of diode D3 and signal amplification circuit 53 is connected, its grounded emitter.The positive pole of described polar capacitor C2 is then connected with 15V voltage.
Signal amplification circuit 53 is by amplifier P1, triode VT3, triode VT4, positive pole is connected with the base stage of triode VT1 after resistance R7, the polar capacitor C4 that negative pole is then connected with the positive pole of amplifier P1, positive pole is connected with the negative pole of amplifier P1 after resistance R8, the polar capacitor C3 that negative pole is then connected with the base stage of triode VT2 after resistance R6, positive pole is connected with the negative pole of polar capacitor C3, the electrode capacitance C5 that negative pole is connected with change-over circuit 54, one end is connected with the emitter of triode VT4, the resistance R9 that the other end is connected with the negative pole of amplifier P1, one end is connected with the base stage of triode VT4, the resistance R10 that the other end is connected with the base stage of triode VT1, and N pole is connected with the base stage of triode VT1, the voltage stabilizing diode D4 of P pole ground connection forms.The base stage of described triode VT3 is connected with the collector of triode VT2, its emitter is connected with the negative pole of polar capacitor C3, collector is connected with the base stage of triode VT1, and the collector of described triode VT4 is connected with change-over circuit 54 respectively with the output terminal of amplifier P1.
Described change-over circuit 54 is by conversion chip U, field effect transistor Q2, triode VT5, triode VT6, rejection gate A, the diode D5 that the negative pole of P pole AND OR NOT gate A is connected, N pole is connected with the IN+ pin of conversion chip U, the diode D6 that N pole is connected with the drain electrode of field effect transistor Q2, P pole is then connected with the OUT pin of conversion chip U after resistance R12, the resistance R11 that one end is connected with the base stage of triode VT5, the other end is then connected with the source electrode of field effect transistor Q2 forms.The positive pole of described rejection gate A is connected with the collector of triode VT4, output terminal is then connected with the emitter of triode VT5, the IN+ pin of described conversion chip U is connected with the output terminal of amplifier P1, its IN-pin is then connected with the negative pole of polar capacitor C5, GND pin ground connection, OUT pin is also connected with the grid of field effect transistor Q2, VCC pin connects 15V voltage, the output terminal of the base stage AND OR NOT gate A of described triode VT5 is connected, collector is connected with the base stage of triode VT6, the collector of triode VT6 is connected with the emitter of triode VT5, its emitter is then connected with the P pole of diode D6.In order to better implement the present invention, described conversion chip U is preferably LM393 type integrated chip and realizes.
As shown in Figure 3, frequency translation module 7 is by process chip U1, triode VT7, triode VT8, N pole is connected with the emitter of triode VT7 after resistance R18, P pole is then in turn through inductance L 5, resistance R13, the diode D7 be connected with the base stage of triode VT7 after resistance R14 and diode D8, positive pole is connected with the LBD pin of process chip U1, the polar capacitor C6 that negative pole is then connected with the tie point of resistance R14 with diode D8, positive pole is connected with the CX pin of process chip U1, the polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor C6, one end is connected with the N pole of diode D7, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C7 after resistance R15, one end is connected with the VFB pin of process chip U1, the resistance R17 that the other end is then connected with the base stage of triode VT7, positive pole is connected with the emitter of triode VT8, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT7, the resistance R19 that the other end is then connected with the negative pole of polar capacitor C9 after resistance R20, and form with the polar capacitor C8 that resistance R19 is in parallel.The LX pin of described process chip U1 is connected with the P pole of diode D7, its LBR pin is all connected with the N pole of diode D7 with IC pin as the input end of circuit, GND pin ground connection, VS pin together with the tie point of resistance R13 with inductance L 5; The base stage of described triode VT8 is connected with the tie point of resistance R20 with resistance R19, its emitter is then connected with the collector of triode VT7, collector is then connected with the N pole of diode D7.The collector and emitter of described triode VT8 is together as the output terminal of circuit.In order to better implement the present invention, described process chip U1 is preferably MAX630 integrated chip to realize.
Voltage compensation module 8 then as shown in Figure 4, it is by compensation chips U2, triode VT9, triode VT10, positive pole is connected with the DRC pin of compensation chips U2, the polar capacitor C10 that negative pole is then connected with the SWC pin of compensation chips U2 after inductance L 6, N pole is connected with the IPK pin of compensation chips U2, the diode D9 that P pole is then connected with the VCC pin of compensation chips U2 after resistance R21, one end is connected with the GND pin of compensation chips U2 after resistance R23, the resistance R22 of other end ground connection, positive pole is connected with the SWE pin of compensation chips U2, the polar capacitor C11 of minus earth, N pole is connected with the SWC pin of compensation chips U2, the voltage stabilizing diode D10 that P pole is then connected with the emitter of triode VT10, one end is connected with the SWE pin of compensation chips U2, the other end is then as the resistance R24 of an output stage of circuit, and positive pole is connected with the collector of triode VT10, negative pole then forms as the polar capacitor C12 of another output stage of circuit after diode D11.The base stage of described triode VT9 is connected with the VCC pin of compensation chips U2, its collector is then connected with the tie point of resistance R23 with resistance R22; The CLL pin of described compensation chips U2 is connected with the collector of triode VT9, GND pin is connected with the negative pole of polar capacitor C11, its TC pin is then connected with the base stage of triode VT10; The P pole of described diode D9 is also connected with the negative pole of polar capacitor C10.The P pole of described diode D9 together with the emitter of triode VT9 as the input end of circuit.In order to reach better implementation result, this compensation chips U2 preferentially adopts MC34063A/E integrated circuit to realize.
As mentioned above, just well the present invention can be realized.
Claims (10)
1. the torque sensor based on voltage compensation, primarily of torsion shaft (1), oscillator (4), be arranged on the collector ring (3) in torsion shaft (1), be pasted onto torsion shaft (1) to go up and the foil gauge (2) be connected with collector ring (3), the frequency translation module (7) be connected with collector ring (3), the signal locking disposal system (5) be connected with frequency translation module (7), the display instrument (6) be connected with signal locking disposal system (5) forms, it is characterized in that: between collector ring (3) and oscillator (4), be also provided with voltage compensation module (8), described voltage compensation module (8) is by compensation chips U2, triode VT9, triode VT10, positive pole is connected with the DRC pin of compensation chips U2, the polar capacitor C10 that negative pole is then connected with the SWC pin of compensation chips U2 after inductance L 6, N pole is connected with the IPK pin of compensation chips U2, the diode D9 that P pole is then connected with the VCC pin of compensation chips U2 after resistance R21, one end is connected with the GND pin of compensation chips U2 after resistance R23, the resistance R22 of other end ground connection, positive pole is connected with the SWE pin of compensation chips U2, the polar capacitor C11 of minus earth, N pole is connected with the SWC pin of compensation chips U2, the voltage stabilizing diode D10 that P pole is then connected with the emitter of triode VT10, one end is connected with the SWE pin of compensation chips U2, the other end is then as the resistance R24 of an output stage of circuit, and positive pole is connected with the collector of triode VT10, negative pole then forms as the polar capacitor C12 of another output stage of circuit after diode D11, the base stage of described triode VT9 is connected with the VCC pin of compensation chips U2, its collector is then connected with the tie point of resistance R23 with resistance R22, the CLL pin of described compensation chips U2 is connected with the collector of triode VT9, GND pin is connected with the negative pole of polar capacitor C11, its TC pin is then connected with the base stage of triode VT10, the P pole of described diode D9 is also connected with the negative pole of polar capacitor C10.
2. a kind of torque sensor based on voltage compensation according to claim 1, it is characterized in that: described frequency translation module (7) is by process chip U1, triode VT7, triode VT8, N pole is connected with the emitter of triode VT7 after resistance R18, P pole is then in turn through inductance L 5, resistance R13, the diode D7 be connected with the base stage of triode VT7 after resistance R14 and diode D8, positive pole is connected with the LBD pin of process chip U1, the polar capacitor C6 that negative pole is then connected with the tie point of resistance R14 with diode D8, positive pole is connected with the CX pin of process chip U1, the polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor C6, one end is connected with the N pole of diode D7, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C7 after resistance R15, one end is connected with the VFB pin of process chip U1, the resistance R17 that the other end is then connected with the base stage of triode VT7, positive pole is connected with the emitter of triode VT8, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT7, the resistance R19 that the other end is then connected with the negative pole of polar capacitor C9 after resistance R20, and form with the polar capacitor C8 that resistance R19 is in parallel, the LX pin of described process chip U1 is connected with the P pole of diode D7, its LBR pin is all connected with the N pole of diode D7 with IC pin as the input end of circuit, GND pin ground connection, VS pin together with the tie point of resistance R13 with inductance L 5, the base stage of described triode VT8 is connected with the tie point of resistance R20 with resistance R19, its emitter is then connected with the collector of triode VT7, collector is then connected with the N pole of diode D7.
3. a kind of torque sensor based on voltage compensation according to claim 2, it is characterized in that: described signal locking disposal system (5) is by front end input circuit (51), the phase lock circuitry (52) be connected with front end input circuit (51), the signal amplification circuit (53) be connected with phase lock circuitry (52), the change-over circuit (54) be connected with signal amplification circuit (53) forms.
4. a kind of torque sensor based on voltage compensation according to claim 3, is characterized in that: described front end input circuit (51) comprises resistance R1, resistance R2, inductance L 1, inductance L 2, diode D1, diode D2, diode D3 and electric capacity C1, the P pole ground connection of described diode D1, N pole is then connected with the N pole of diode D2 after polar capacitor C1, one end of resistance R1 is connected with the N pole of diode D1, the other end is then as an input pole of circuit, one end of resistance R2 is connected with the N pole of diode D1, the other end is then connected with phase lock circuitry (52), one end of inductance L 2 is connected with the N pole of diode D1 after resistance R2, the other end is then connected with the p pole of diode D2, the N pole of described diode D2 after inductance L 1 as another input pole of circuit, P pole is connected with phase lock circuitry (52), the N pole of diode D3 is connected with the P pole of diode D2, ground connection while P pole is then connected with phase lock circuitry (52).
5. a kind of torque sensor based on voltage compensation according to claim 4, it is characterized in that: described phase lock circuitry (52) is by field effect transistor Q1, triode VT1, triode VT2, positive pole is connected with the emitter of triode VT1 after resistance R3, the polar capacitor C2 that negative pole is then connected with the base stage of triode VT1, one end is connected with the collector of triode VT1, the resistance R4 that the other end is connected with the collector of triode VT2 after inductance L 4, one end is connected with the base stage of triode VT2, the resistance R6 that the other end is connected with signal amplification circuit (53), and one end is connected with the base stage of triode VT2 after inductance L 3, the resistance R5 of other end ground connection forms, the grid of described field effect transistor Q1 is connected with the N pole of diode D3, source electrode is connected with the base stage of triode VT2, it drains and be then connected with the collector of triode VT1, the collector of described triode VT1 is connected with the tie point of inductance L 2 with resistance R2, its base stage is then connected with signal amplification circuit (53), and the collector of described triode VT2 is respectively with the P pole of diode D3 and signal amplification circuit (53) is connected, its grounded emitter.
6. a kind of torque sensor based on voltage compensation according to claim 5, it is characterized in that: described signal amplification circuit (53) is by amplifier P1, triode VT3, triode VT4, positive pole is connected with the base stage of triode VT1 after resistance R7, the polar capacitor C4 that negative pole is then connected with the positive pole of amplifier P1, positive pole is connected with the negative pole of amplifier P1 after resistance R8, the polar capacitor C3 that negative pole is then connected with the base stage of triode VT2 after resistance R6, positive pole is connected with the negative pole of polar capacitor C3, the electrode capacitance C5 that negative pole is connected with change-over circuit (54), one end is connected with the emitter of triode VT4, the resistance R9 that the other end is connected with the negative pole of amplifier P1, one end is connected with the base stage of triode VT4, the resistance R10 that the other end is connected with the base stage of triode VT1, and N pole is connected with the base stage of triode VT1, the voltage stabilizing diode D4 of P pole ground connection forms, the base stage of described triode VT3 is connected with the collector of triode VT2, its emitter is connected with the negative pole of polar capacitor C3, collector is connected with the base stage of triode VT1, and the collector of described triode VT4 is connected with change-over circuit (54) respectively with the output terminal of amplifier P1.
7. a kind of torque sensor based on voltage compensation according to claim 6, it is characterized in that: described change-over circuit (54) is by conversion chip U, field effect transistor Q2, triode VT5, triode VT6, rejection gate A, the negative pole of P pole AND OR NOT gate A is connected, the diode D5 that N pole is connected with the IN+ pin of conversion chip U, N pole is connected with the drain electrode of field effect transistor Q2, the diode D6 that P pole is then connected with the OUT pin of conversion chip U after resistance R12, one end is connected with the base stage of triode VT5, the resistance R11 that the other end is then connected with the source electrode of field effect transistor Q2 forms, the positive pole of described rejection gate A is connected with the collector of triode VT4, output terminal is then connected with the emitter of triode VT5, the IN+ pin of described conversion chip U is connected with the output terminal of amplifier P1, its IN-pin is then connected with the negative pole of polar capacitor C5, GND pin ground connection, OUT pin is also connected with the grid of field effect transistor Q2, VCC pin connects 15V voltage, the output terminal of the base stage AND OR NOT gate A of described triode VT5 is connected, collector is connected with the base stage of triode VT6, the collector of triode VT6 is connected with the emitter of triode VT5, its emitter is then connected with the P pole of diode D6.
8. a kind of torque sensor based on voltage compensation according to claim 7, is characterized in that: described conversion chip U is LM393 type integrated chip.
9. a kind of torque sensor based on voltage compensation according to any one of claim 2 ~ 7, is characterized in that: described process chip U1 is MAX630 integrated chip.
10. a kind of torque sensor based on voltage compensation according to any one of claim 1 ~ 7, is characterized in that: described compensation chips U2 is MC34063A/E integrated circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201898.3A CN104807574A (en) | 2015-04-25 | 2015-04-25 | Torque sensor based on voltage compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201898.3A CN104807574A (en) | 2015-04-25 | 2015-04-25 | Torque sensor based on voltage compensation |
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| CN1576814A (en) * | 2003-07-16 | 2005-02-09 | 株式会社万都 | Torque detector |
| DE102007047500A1 (en) * | 2007-10-04 | 2009-04-09 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Method and device for in-situ determination of the operating states of working machines |
| CN101629861A (en) * | 2008-07-14 | 2010-01-20 | 北京新宇航世纪科技有限公司 | Torque rotary speed sensor |
| CN103674366A (en) * | 2013-12-12 | 2014-03-26 | 青岛理工大学 | Torque monitoring system of ocean energy power generation device |
| CN203912278U (en) * | 2014-06-12 | 2014-10-29 | 西安文理学院 | LED desk lamp intelligent controller |
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| CN1576814A (en) * | 2003-07-16 | 2005-02-09 | 株式会社万都 | Torque detector |
| DE102007047500A1 (en) * | 2007-10-04 | 2009-04-09 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Method and device for in-situ determination of the operating states of working machines |
| CN101629861A (en) * | 2008-07-14 | 2010-01-20 | 北京新宇航世纪科技有限公司 | Torque rotary speed sensor |
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Application publication date: 20150729 |