CN105258957A - Eddy current retarder test system on the basis of filtering adjustment and emitter-coupled amplification - Google Patents
Eddy current retarder test system on the basis of filtering adjustment and emitter-coupled amplification Download PDFInfo
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- CN105258957A CN105258957A CN201510816160.8A CN201510816160A CN105258957A CN 105258957 A CN105258957 A CN 105258957A CN 201510816160 A CN201510816160 A CN 201510816160A CN 105258957 A CN105258957 A CN 105258957A
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Abstract
The present invention discloses an eddy current retarder test system on the basis of filtering adjustment and emitter-coupled amplification. The eddy current retarder test system on the basis of filtering adjustment and emitter-coupled amplification comprises an eddy current retarder, a driver, a temperature sensor, a current transducer, a torque sensor, a processing unit and an upper computer, wherein the driver, the temperature sensor, the current transducer and the torque sensor are connected with the eddy current retarder, the processing unit is connected with the temperature sensor, the current transducer and the torque sensor, and the upper computer is connected with the driver and the processing unit. The processing unit is composed of a single chip microcomputer, an analog-to-digital conversion unit, a voltage conversion unit, a CAN communication unit, a signal filtering adjustable unit, a temperature signal amplification unit connected with the analog-to-digital conversion unit and the like, wherein the analog-to-digital conversion unit, the voltage conversion unit, the CAN communication unit and the signal filtering adjustable unit are connected with the single chip microcomputer. Through adoption of the signal filtering adjustable unit, the filtering processing of converted torque signals may be performed, so that the converted torque signals may be not affected by interference factors from the system itself or the outside. Therefore, the test precision of the eddy current retarder test system on the basis of filtering adjustment and emitter-coupled amplification may be improved.
Description
Technical field
The present invention relates to a kind of eddy current retarder test system, specifically refer to a kind of eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering.
Background technology
Current vortex retarder is a kind of auxiliary brake device for automobile, is commonly called as electricity and stops, and is mainly used in motorbus, urban public traffic vehicles and heavy truck.This device is arranged between automobile drive axle and wheel box, realizes contactless braking by electromagnetic induction principle.
Eddy current retarder test system detects for the performance of the current vortex retarder before dispatching from the factory, thus guarantee that qualified current vortex retarder could commercially circulate, and the eddy current retarder test system therefore having superperformance then seems excellent in important.But, traditional eddy current retarder test system, need manually to see that various instrument shows, then verify with standard value one by one, record, such labour intensity is large, and efficiency is low, easily erroneous judgement or misregistration, and traditional eddy current retarder test system signal that it collects in test process is easily interfered, the impact of factor, causes its test result inaccurate.
Summary of the invention
The object of the invention is to overcome traditional eddy current retarder test system, need manually to see that various instrument shows, then verify with standard value one by one, record, such labour intensity is large, efficiency is low, the impact of the factor that is easily interfered, causes the inaccurate defect of its test result, provides a kind of eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering.
Object of the present invention is achieved through the following technical solutions: the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering, comprise current vortex retarder, the driver be connected with current vortex retarder respectively, temperature sensor, current transducer and torque sensor, the processing unit be connected with temperature sensor, current transducer and torque sensor respectively, and the host computer be connected with processing unit with driver respectively, described processing unit is then by single-chip microcomputer, the AD conversion unit be connected with single-chip microcomputer, voltage conversion unit, CAN communication unit and signal filtering adjustable elements, the temperature signal amplifying unit be connected with AD conversion unit, the emitter-base bandgap grading manifold type amplifying circuit be connected with signal filtering adjustable elements, the A/D converting unit be connected with emitter-base bandgap grading manifold type amplifying circuit, and the torque signal amplifying unit be connected with A/D converting unit forms, described temperature signal amplifying unit is also connected with temperature sensor, and voltage conversion unit is connected with current transducer, and torque signal amplifying unit is then also connected with torque sensor, and CAN communication unit is then connected with host computer by CAN, described signal filtering adjustable elements is by triode VT9, triode VT10, positive pole is connected with the base stage of triode VT10 after polar capacitor C20, negative pole then forms the polar capacitor C21 of the input end of this signal filtering adjustable elements after resistance R14, N pole is connected with the positive pole of polar capacitor C21, P pole is then in turn through diode D2 that resistance R13 is connected with the negative pole of polar capacitor C21 after resistance R14, positive pole is connected with the base stage of triode VT10, the polar capacitor C19 that negative pole is then connected with the emitter of triode VT9 after potentiometer R15, N pole forms the output terminal of this signal filtering adjustable elements, the diode D3 that P pole is then connected with the base stage of triode VT9 after resistance R11, one end is connected with the base stage of triode VT9, the resistance R12 that the other end is then connected with the negative pole of polar capacitor C21 after resistance R14, be serially connected in the resistance R17 between the N pole of diode D3 and the collector of triode VT10, one end is connected with the emitter of triode VT10, the resistance R16 of other end ground connection, positive pole is connected with the emitter of triode VT10, the polar capacitor C22 of minus earth, and N pole is connected with the N pole of diode D3, the voltage stabilizing diode D4 of P pole ground connection forms, the control end of described potentiometer R15 is then connected with the P pole of diode D3, the collector of described triode VT9 is then connected with the P pole of diode D2, the input end of described signal filtering adjustable elements is connected with the output terminal of emitter-base bandgap grading manifold type amplifying circuit, its output terminal is then connected with single-chip microcomputer.
Described emitter-base bandgap grading manifold type amplifying circuit is by amplifier P1, triode VT5, triode VT6, triode VT7, triode VT8, negative pole is connected with the negative pole of amplifier P1, positive pole then forms the electric capacity C11 of the input end of this emitter-base bandgap grading manifold type amplifying circuit, one end is connected with the negative pole of amplifier P1, the resistance R5 of other end ground connection, negative pole is connected with the positive pole of amplifier P1, the electric capacity C12 that positive pole is then connected with the negative pole of electric capacity C11, positive pole is connected with the negative pole of amplifier P1, the electric capacity C13 that negative pole is then connected with the output terminal of amplifier P1 after resistance R6, the electric capacity C14 be in parallel with electric capacity C13, be serially connected in the resistance R7 between the emitter of triode VT5 and the base stage of triode VT8, be serially connected in the resistance R8 between the emitter of triode VT6 and the base stage of triode VT7, positive pole is connected with the collector of triode VT8, the polar capacitor C18 of minus earth, the electric capacity C17 be in parallel with polar capacitor C18, negative pole is connected with the collector of triode VT7, the electric capacity C16 of plus earth, the electric capacity C15 be in parallel with electric capacity C16, and one end is connected with the emitter of triode VT8, the resistance R9 that the other end then forms the output terminal of this emitter-base bandgap grading manifold type amplifying circuit after resistance R10 forms, the base stage of described triode VT5 is connected with the output terminal of amplifier P1, its collector is then connected with the collector of triode VT7, the base stage of described triode VT6 is connected with the base stage of triode VT5, its collector is then connected with the collector of triode VT8, the emitter of described triode VT7 is connected with the tie point of resistance R10 with resistance R9, the input end of described emitter-base bandgap grading manifold type amplifying circuit is connected with the output terminal of A/D converting unit.
Further, described A/D converting unit is by signal acquisition circuit, and the change-over circuit be connected with signal acquisition circuit output forms; The input end of described signal acquisition circuit is connected with the output terminal of torque signal amplifying unit, and the output terminal of described change-over circuit is connected with the input end of emitter-base bandgap grading manifold type amplifying circuit.
Described signal acquisition circuit is by triode VT1, the electric capacity C2 that negative pole is connected with the emitter of triode VT1, positive pole then forms the input end of this signal acquisition circuit, the electric capacity C1 be in parallel with electric capacity C2, the electric capacity C3 that positive pole is connected with the positive pole of electric capacity C2, negative pole is then connected with the base stage of triode VT1, positive pole is connected with the collector of triode VT1, the electric capacity C6 of negative pole then ground connection, and the diode D1 that P pole is connected with the negative pole of electric capacity C6, N pole is then connected with change-over circuit forms; The emitter of described triode VT1 is also connected with change-over circuit.
Described change-over circuit is by conversion chip U, triode VT2, triode VT3, triode VT4, positive pole is connected with the VPOS pin of conversion chip U, the electric capacity C4 of minus earth, the electric capacity C5 be in parallel with electric capacity C4, positive pole is connected with the base stage of triode VT2, the electric capacity C8 of minus earth, the electric capacity C7 be in parallel with electric capacity C8, negative pole is connected with the emitter of triode VT2, the electric capacity C9 that positive pole is then connected with the collector of triode VT3, ground connection while negative pole is connected with the base stage of triode VT3, the electric capacity C10 that positive pole is then connected with the collector of triode VT3, one end is connected with the emitter of triode VT3, the resistance R1 that the other end is then connected with the VOUT pin of conversion chip U, one end is connected with the emitter of triode VT4, the other end is the resistance R3 of ground connection after resistance R2 then, and the resistance R4 be serially connected between the emitter of triode VT4 and base stage forms, the VPOS pin of described conversion chip U connects+5V voltage, its VINP pin is then connected with the emitter of triode VT1, its COMM pin is then all connected with the N pole of diode D1 with GNEG pin, its VNEG pin connects-5V voltage while being then connected with the base stage of triode VT2, its GPOS pin is then all connected with the emitter of triode VT2 with VOUT pin and FDBK pin, the grounded collector of described triode VT2, the collector of described triode VT4 is connected with the collector of triode VT3, its base stage is then connected with the tie point of resistance R2 with resistance R3, the VOUT pin of described conversion chip U then forms the output terminal of this change-over circuit.
Described conversion chip U is AD603 integrated chip.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can complete testing process automatically, without the need to desk checking, record, reduce the labour intensity of tester, improve testing efficiency, and avoid occurring the existing picture such as erroneous judgement or misregistration in test process and affecting the assessment of tester to current vortex retarder performance.
(2) manifold type amplifying circuit of the present invention can amplify the moment of torsion digital signal after conversion, and the moment of torsion digital signal after it amplifies there will not be the existing picture of distortion, therefore can improve the present invention and detect essence to the moment of torsion of current vortex retarder.
(3) the present invention is provided with signal filtering adjustable elements, it can carry out filtering process to the torque signal after conversion, therefore the torque signal after this conversion can not be subject to the impact of the disturbing factor from system self or the external world, so then can improve measuring accuracy of the present invention.
(4) structure of the present invention is simple, with low cost, is suitable for extensive popularization.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the structural drawing of processing unit of the present invention.
Fig. 3 is the circuit structure diagram of A/D converting unit of the present invention.
Fig. 4 is the structural drawing of emitter-base bandgap grading manifold type amplifying circuit of the present invention.
Fig. 5 is the circuit structure diagram of signal filtering adjustable elements of the present invention.
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 eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering of the present invention, by driver, current vortex retarder, temperature sensor, current transducer, torque sensor, processing unit and host computer composition.
During enforcement, driver is connected with current vortex retarder, and it is for controlling the action such as acceleration, deceleration, start and stop of current vortex retarder.This temperature sensor, current transducer and torque sensor are then all connected with current vortex retarder, this temperature sensor for gathering the working temperature of current vortex retarder, the TN3000 type LED temperature digital display sensor that it preferentially adopts Shanghai Yang Ji Electronic Science and Technology Co., Ltd. to produce; Current transducer is then for gathering the real-time working electric current of current vortex retarder, and it preferentially adopts the HZ-AC-D1 potline current transmitter of Beijing Hua Zhixing Science and Technology Ltd. far away production; Torque sensor is then for gathering the real-time torque signal of current vortex retarder, and its ZJ-A type torque rotary speed sensor preferentially adopting Jiangsu Lan Ling Electromechanical Technology Co., Ltd to research and develop realizes.Processing unit is then connected with temperature sensor, current transducer and torque sensor simultaneously, and it processes for the temperature signal to current vortex retarder, current signal and torque signal.This host computer is connected with driver, and processing unit is also connected with host computer by CAN, this host computer is as human-computer exchange window, tester can input the steering order to current vortex retarder on host computer, and by host computer, steering order is sent to driver, by driver, current vortex retarder is controlled; Meanwhile, this host computer also can receive the various signals that processing unit sends, and tester understands the various real-time information of current vortex retarder by host computer.
In order to the better various live signals to current vortex retarder process, as shown in Figure 2, this processing unit is then by single-chip microcomputer, AD conversion unit, voltage conversion unit, signal filtering adjustable elements, emitter-base bandgap grading manifold type amplifying circuit, A/D converting unit, temperature signal amplifying unit, torque signal amplifying unit and CAN communication unit composition.
Wherein, this temperature signal amplifying unit is used for carrying out amplification process to the temperature signal collected, therefore it is connected with temperature sensor, and AD conversion unit is then for being converted to digital signal the temperature signal after amplification, and it is connected with temperature signal amplifying unit.This torque signal amplifying unit is used for carrying out amplification process to torque signal, therefore it is connected with torque sensor, this A/D converting unit is then for being converted to the discernible digital signal of system the torque signal after amplification, and it is connected with torque signal amplifying unit.This emitter-base bandgap grading manifold type amplifying circuit can amplify the moment of torsion digital signal after conversion, moment of torsion digital signal after it amplifies there will not be the existing picture of distortion, therefore can improve the present invention and detect essence to the moment of torsion of current vortex retarder, it need be connected with A/D converting unit.Described signal filtering adjustable elements is then connected with emitter-base bandgap grading manifold type amplifying circuit, and it is for carrying out filtering process to the torque signal after amplification, avoids the torque signal after amplifying to be subject to the impact of the external world or system self undesired signal.This voltage conversion unit is connected with current transducer, and it is for being converted to voltage signal the current signal collected.Single-chip microcomputer is then connected with AD conversion unit, voltage conversion unit and signal filtering adjustable elements simultaneously, and it is for identifying temperature signal, voltage signal and torque signal.This CAN communication unit is then connected with single-chip microcomputer, its for process after various Signal transmissions to host computer.
As shown in Figure 3, described A/D converting unit is by signal acquisition circuit, and the change-over circuit be connected with signal acquisition circuit output forms.The input end of described signal acquisition circuit is connected with the output terminal of torque signal amplifying unit, and the output terminal of described change-over circuit is connected with the input end of emitter-base bandgap grading manifold type amplifying circuit.
Described signal acquisition circuit is by electric capacity C1, and electric capacity C2, electric capacity C3, electric capacity C6, diode D1 and triode VT1 form.Described change-over circuit is then by conversion chip U, and triode VT2, triode VT3, triode VT4, electric capacity C4, electric capacity C5, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, resistance R1, resistance R2, resistance R3 and resistance R4 form.
During connection, the input end that the negative pole of electric capacity C2 is connected with the VINP pin of conversion chip U, its positive pole then forms this signal acquisition circuit.Electric capacity C1 is then in parallel with electric capacity C2.The positive pole of electric capacity C3 is connected with the positive pole of electric capacity C2, its negative pole is then connected with the base stage of triode VT1.The positive pole of electric capacity C6 is connected with the collector of triode VT1, its negative pole then ground connection.The P pole of diode D1 is connected with the negative pole of electric capacity C6, its N pole is then connected with the COMM pin of conversion chip U and GNEG pin simultaneously.The positive pole of electric capacity C4 is connected with the VPOS pin of conversion chip U, its minus earth.Electric capacity C5 and electric capacity C4 is in parallel.The positive pole of electric capacity C8 is connected with the base stage of triode VT2, its minus earth.Electric capacity C7 and electric capacity C8 is in parallel.The negative pole of electric capacity C9 is connected with the emitter of triode VT2, its positive pole is then connected with the collector of triode VT3.While the negative pole of electric capacity C10 is connected with the base stage of triode VT3, ground connection, its positive pole are then connected with the collector of triode VT3.One end of resistance R1 is connected with the emitter of triode VT3, its other end is then connected with the VOUT pin of conversion chip U.One end of resistance R3 is connected with the emitter of triode VT4, its other end then ground connection after resistance R2.Between the emitter that resistance R4 is serially connected in triode VT4 and base stage.
Simultaneously, the VPOS pin of described conversion chip U connects that+5V voltage, its VNEG pin connect-5V voltage while being then connected with the base stage of triode VT2, its GPOS pin is then all connected with the emitter of triode VT2 with VOUT pin and FDBK pin, and its VOUT pin also forms the output terminal of this change-over circuit.The grounded collector of described triode VT2; The collector of described triode VT4 is connected with the collector of triode VT3, its base stage is then connected with the tie point of resistance R2 with resistance R3.In order to reach better implementation result, described conversion chip U is preferably AD603 integrated chip to realize.
As shown in Figure 4, described emitter-base bandgap grading manifold type amplifying circuit is by amplifier P1, triode VT5, triode VT6, triode VT7, triode VT8, negative pole is connected with the negative pole of amplifier P1, positive pole then forms the electric capacity C11 of the input end of this emitter-base bandgap grading manifold type amplifying circuit, one end is connected with the negative pole of amplifier P1, the resistance R5 of other end ground connection, negative pole is connected with the positive pole of amplifier P1, the electric capacity C12 that positive pole is then connected with the negative pole of electric capacity C11, positive pole is connected with the negative pole of amplifier P1, the electric capacity C13 that negative pole is then connected with the output terminal of amplifier P1 after resistance R6, the electric capacity C14 be in parallel with electric capacity C13, be serially connected in the resistance R7 between the emitter of triode VT5 and the base stage of triode VT8, be serially connected in the resistance R8 between the emitter of triode VT6 and the base stage of triode VT7, positive pole is connected with the collector of triode VT8, the polar capacitor C18 of minus earth, the electric capacity C17 be in parallel with polar capacitor C18, negative pole is connected with the collector of triode VT7, the electric capacity C16 of plus earth, the electric capacity C15 be in parallel with electric capacity C16, and one end is connected with the emitter of triode VT8, the resistance R9 that the other end then forms the output terminal of this emitter-base bandgap grading manifold type amplifying circuit after resistance R10 forms.
The base stage of described triode VT5 is connected with the output terminal of amplifier P1, its collector is then connected with the collector of triode VT7.The base stage of described triode VT6 is connected with the base stage of triode VT5, its collector is then connected with the collector of triode VT8.The emitter of described triode VT7 is connected with the tie point of resistance R10 with resistance R9.The output terminal of described emitter-base bandgap grading manifold type amplifying circuit is connected with the input end of signal filtering adjustable elements
As shown in Figure 5, this signal filtering adjustable elements then by triode VT9, triode VT10, resistance R11, resistance R12, resistance R13, resistance R14, potentiometer R15, resistance R16, resistance R17, polar capacitor C19, polar capacitor C20, polar capacitor C21, polar capacitor C22, diode D2, diode D3 and voltage stabilizing diode D4 form.
Wherein, triode VT9, resistance R13, resistance R14, potentiometer R15, diode D2, polar capacitor C19, polar capacitor C20 and polar capacitor C21 form signal filter circuit jointly.The positive pole of described polar capacitor C19 is connected with the base stage of triode VT10, its negative pole is then connected with the emitter of triode VT9 after potentiometer R15.The input end that the positive pole of described polar capacitor C21 is connected with the base stage of triode VT10 after polar capacitor C20, its negative pole then forms this signal filtering adjustable elements after resistance R14.The N pole of described diode D2 is connected with the positive pole of polar capacitor C21, its P pole is then connected with the negative pole of polar capacitor C21 after resistance R14 through resistance R13 in turn.The collector of described triode VT9 is then connected with the P pole of diode D2.The control end of described potentiometer R15 is then connected with the P pole of diode D3.
In addition, the N pole of described diode D3 forms the output terminal of this signal filtering adjustable elements, its P pole is then connected with the base stage of triode VT9 after resistance R11.One end of resistance R12 is connected with the base stage of triode VT9, its other end is then connected with the negative pole of polar capacitor C21 after resistance R14.Resistance R17 is then serially connected between the N pole of diode D3 and the collector of triode VT10.One end of resistance R16 is connected with the emitter of triode VT10, its other end ground connection.Described polar capacitor C22 positive pole is connected with the emitter of triode VT10, its minus earth, and the N pole of described voltage stabilizing diode D4 is connected with the N pole of diode D3, its P pole ground connection.The output terminal of described signal filtering adjustable elements is connected with single-chip microcomputer.Filtered the undesired signal be entrained in wherein by signal filter circuit after torque signal after conversion is input to signal filter circuit, torque signal is after filtering input to single-chip microcomputer again; The resistance of adjustment potentiometer R15 then can adjust the frequency filtering of signal filter circuit, makes it can filter the undesired signal of different frequency.
As mentioned above, just well the present invention can be implemented.
Claims (5)
1. the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering, comprise current vortex retarder, it is characterized in that, also comprise the driver, temperature sensor, current transducer and the torque sensor that are connected with current vortex retarder respectively, the processing unit be connected with temperature sensor, current transducer and torque sensor respectively, and the host computer be connected with processing unit with driver respectively, described processing unit is then by single-chip microcomputer, the AD conversion unit be connected with single-chip microcomputer, voltage conversion unit, CAN communication unit and signal filtering adjustable elements, the temperature signal amplifying unit be connected with AD conversion unit, the emitter-base bandgap grading manifold type amplifying circuit be connected with signal filtering adjustable elements, the A/D converting unit be connected with emitter-base bandgap grading manifold type amplifying circuit, and the torque signal amplifying unit be connected with A/D converting unit forms, described temperature signal amplifying unit is also connected with temperature sensor, and voltage conversion unit is connected with current transducer, and torque signal amplifying unit is then also connected with torque sensor, and CAN communication unit is then connected with host computer by CAN, described signal filtering adjustable elements is by triode VT9, triode VT10, positive pole is connected with the base stage of triode VT10 after polar capacitor C20, negative pole then forms the polar capacitor C21 of the input end of this signal filtering adjustable elements after resistance R14, N pole is connected with the positive pole of polar capacitor C21, P pole is then in turn through diode D2 that resistance R13 is connected with the negative pole of polar capacitor C21 after resistance R14, positive pole is connected with the base stage of triode VT10, the polar capacitor C19 that negative pole is then connected with the emitter of triode VT9 after potentiometer R15, N pole forms the output terminal of this signal filtering adjustable elements, the diode D3 that P pole is then connected with the base stage of triode VT9 after resistance R11, one end is connected with the base stage of triode VT9, the resistance R12 that the other end is then connected with the negative pole of polar capacitor C21 after resistance R14, be serially connected in the resistance R17 between the N pole of diode D3 and the collector of triode VT10, one end is connected with the emitter of triode VT10, the resistance R16 of other end ground connection, positive pole is connected with the emitter of triode VT10, the polar capacitor C22 of minus earth, and N pole is connected with the N pole of diode D3, the voltage stabilizing diode D4 of P pole ground connection forms, the control end of described potentiometer R15 is then connected with the P pole of diode D3, the collector of described triode VT9 is then connected with the P pole of diode D2, the input end of described signal filtering adjustable elements is connected with the output terminal of emitter-base bandgap grading manifold type amplifying circuit, its output terminal is then connected with single-chip microcomputer,
Described emitter-base bandgap grading manifold type amplifying circuit is by amplifier P1, triode VT5, triode VT6, triode VT7, triode VT8, negative pole is connected with the negative pole of amplifier P1, positive pole then forms the electric capacity C11 of the input end of this emitter-base bandgap grading manifold type amplifying circuit, one end is connected with the negative pole of amplifier P1, the resistance R5 of other end ground connection, negative pole is connected with the positive pole of amplifier P1, the electric capacity C12 that positive pole is then connected with the negative pole of electric capacity C11, positive pole is connected with the negative pole of amplifier P1, the electric capacity C13 that negative pole is then connected with the output terminal of amplifier P1 after resistance R6, the electric capacity C14 be in parallel with electric capacity C13, be serially connected in the resistance R7 between the emitter of triode VT5 and the base stage of triode VT8, be serially connected in the resistance R8 between the emitter of triode VT6 and the base stage of triode VT7, positive pole is connected with the collector of triode VT8, the polar capacitor C18 of minus earth, the electric capacity C17 be in parallel with polar capacitor C18, negative pole is connected with the collector of triode VT7, the electric capacity C16 of plus earth, the electric capacity C15 be in parallel with electric capacity C16, and one end is connected with the emitter of triode VT8, the resistance R9 that the other end then forms the output terminal of this emitter-base bandgap grading manifold type amplifying circuit after resistance R10 forms, the base stage of described triode VT5 is connected with the output terminal of amplifier P1, its collector is then connected with the collector of triode VT7, the base stage of described triode VT6 is connected with the base stage of triode VT5, its collector is then connected with the collector of triode VT8, the emitter of described triode VT7 is connected with the tie point of resistance R10 with resistance R9, the input end of described emitter-base bandgap grading manifold type amplifying circuit is connected with the output terminal of A/D converting unit.
2. the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering according to claim 1, it is characterized in that, described A/D converting unit is by signal acquisition circuit, and the change-over circuit be connected with signal acquisition circuit output forms; The input end of described signal acquisition circuit is connected with the output terminal of torque signal amplifying unit, and the output terminal of described change-over circuit is connected with the input end of emitter-base bandgap grading manifold type amplifying circuit.
3. the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering according to claim 2, it is characterized in that, described signal acquisition circuit is by triode VT1, negative pole is connected with the emitter of triode VT1, positive pole then forms the electric capacity C2 of the input end of this signal acquisition circuit, the electric capacity C1 be in parallel with electric capacity C2, positive pole is connected with the positive pole of electric capacity C2, the electric capacity C3 that negative pole is then connected with the base stage of triode VT1, positive pole is connected with the collector of triode VT1, the electric capacity C6 of negative pole then ground connection, and P pole is connected with the negative pole of electric capacity C6, the diode D1 that N pole is then connected with change-over circuit forms, the emitter of described triode VT1 is also connected with change-over circuit.
4. the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering according to claim 3, it is characterized in that, described change-over circuit is by conversion chip U, triode VT2, triode VT3, triode VT4, positive pole is connected with the VPOS pin of conversion chip U, the electric capacity C4 of minus earth, the electric capacity C5 be in parallel with electric capacity C4, positive pole is connected with the base stage of triode VT2, the electric capacity C8 of minus earth, the electric capacity C7 be in parallel with electric capacity C8, negative pole is connected with the emitter of triode VT2, the electric capacity C9 that positive pole is then connected with the collector of triode VT3, ground connection while negative pole is connected with the base stage of triode VT3, the electric capacity C10 that positive pole is then connected with the collector of triode VT3, one end is connected with the emitter of triode VT3, the resistance R1 that the other end is then connected with the VOUT pin of conversion chip U, one end is connected with the emitter of triode VT4, the other end is the resistance R3 of ground connection after resistance R2 then, and the resistance R4 be serially connected between the emitter of triode VT4 and base stage forms, the VPOS pin of described conversion chip U connects+5V voltage, its VINP pin is then connected with the emitter of triode VT1, its COMM pin is then all connected with the N pole of diode D1 with GNEG pin, its VNEG pin connects-5V voltage while being then connected with the base stage of triode VT2, its GPOS pin is then all connected with the emitter of triode VT2 with VOUT pin and FDBK pin, the grounded collector of described triode VT2, the collector of described triode VT4 is connected with the collector of triode VT3, its base stage is then connected with the tie point of resistance R2 with resistance R3, the VOUT pin of described conversion chip U then forms the output terminal of this change-over circuit.
5. the eddy current retarder test system of and emitter-base bandgap grading coupling amplification adjustable based on filtering according to claim 4, it is characterized in that, described conversion chip U is AD603 integrated chip.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839782A (en) * | 2010-06-01 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | Eddy current retarder test system and method thereof |
| CN101839783A (en) * | 2010-06-01 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | System and method for testing hydrodynamic retarder |
| CN105007652A (en) * | 2014-11-28 | 2015-10-28 | 成都雷克尔科技有限公司 | Light beam excitation logic protection emitter coupled double-filtering car light alarm system |
| CN105049996A (en) * | 2014-11-18 | 2015-11-11 | 成都雷克尔科技有限公司 | Mirror type voltage-stabilizing oscillation type high-definition audio processing system with adjustable filtering frequency |
-
2015
- 2015-11-21 CN CN201510816160.8A patent/CN105258957A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839782A (en) * | 2010-06-01 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | Eddy current retarder test system and method thereof |
| CN101839783A (en) * | 2010-06-01 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | System and method for testing hydrodynamic retarder |
| CN105049996A (en) * | 2014-11-18 | 2015-11-11 | 成都雷克尔科技有限公司 | Mirror type voltage-stabilizing oscillation type high-definition audio processing system with adjustable filtering frequency |
| CN105007652A (en) * | 2014-11-28 | 2015-10-28 | 成都雷克尔科技有限公司 | Light beam excitation logic protection emitter coupled double-filtering car light alarm system |
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Application publication date: 20160120 |