CN109116147B - Signal calibration circuit for electric automobile vehicle-mounted system - Google Patents
Signal calibration circuit for electric automobile vehicle-mounted system Download PDFInfo
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- CN109116147B CN109116147B CN201810850446.1A CN201810850446A CN109116147B CN 109116147 B CN109116147 B CN 109116147B CN 201810850446 A CN201810850446 A CN 201810850446A CN 109116147 B CN109116147 B CN 109116147B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Abstract
The invention discloses a signal calibration circuit for an electric automobile vehicle-mounted system, which comprises a signal receiving circuit, an enhancement comparison circuit and a compensation output circuit, wherein the signal receiving circuit receives a data signal at the input end of a signal transmission channel for receiving a signal by a control terminal of the electric automobile vehicle-mounted system, a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering and then inputting the data signal into the enhancement comparison circuit, the enhancement comparison circuit uses a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2 to form a signal enhancement circuit for adjusting the frequency of the signal, finally the compensation output circuit uses a compensation circuit consisting of a power supply +10V and a variable resistor RW3 to provide a compensation potential for a signal output port, an operational amplifier AR2 is designed for amplifying the output signal of the enhancement comparison circuit in phase, and finally the signal is output after being stabilized by a triode voltage stabilizing circuit consisting of a triode, the effect of automatically calibrating the signal is realized, and the signal error is reduced.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a signal calibration circuit for an electric automobile vehicle-mounted system.
Background
The electric vehicle-mounted system is a 'nervous system' of the electric vehicle, so that the quality of the electric vehicle-mounted system is determined by the quality of the electric vehicle-mounted system, the electric vehicle-mounted system control terminal exchanges information with other equipment of the electric vehicle through a signal transmission channel, then under the long-time working state of the electric vehicle, signals in the signal transmission channel are often abnormal in the transmission process, the signal error received by the electric vehicle-mounted system control terminal is larger, the performance of the electric vehicle-mounted system is seriously influenced, and therefore stable and efficient transmission of the signals in the signal transmission channel for the electric vehicle-mounted system control terminal is required to be ensured in real time.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, and in order to overcome the defects of the prior art, the present invention aims to provide a signal calibration circuit for an electric vehicle on-board system, which has the characteristics of ingenious design and humanized design, detects a signal at an input end of a signal transmission channel for receiving a signal by a control terminal of the electric vehicle on-board system in real time, and can automatically calibrate the signal and reduce signal errors.
The technical scheme includes that the signal calibration circuit for the electric automobile vehicle-mounted system comprises a signal receiving circuit, an enhancement comparison circuit and a compensation output circuit, the signal receiving circuit receives data signals at the input end of a signal transmission channel for receiving signals at a control terminal of the electric automobile vehicle-mounted system, a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering and then inputting the data signals into the enhancement comparison circuit, the enhancement comparison circuit adjusts signal frequency by using a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2, meanwhile, the comparison circuit consisting of an operational amplifier AR3 and an operational amplifier AR4 is designed for comparing the signals, wherein an emitter signal of the triode Q2 is positively fed back into the non-phase input end of the operational amplifier AR4 to adjust the output signal potential of the enhancement comparison circuit, and finally the compensation output circuit uses a power supply +10V and the variable resistor RW3 to form a compensation circuit to provide compensation potential for a compensation output port Meanwhile, an operational amplifier AR2 in-phase amplification enhanced comparison circuit output signal is designed, and finally the signal is output after being stabilized by a triode voltage stabilizing circuit consisting of a triode Q4 and a voltage stabilizing tube D8, namely the signal is input into a signal transmission channel for receiving signals of a vehicle-mounted system control terminal of the electric vehicle;
the enhanced comparison circuit comprises a transistor Q1, a base of a transistor Q1 is connected with one end of a resistor R1 and a resistor R2, a collector of the transistor Q2 is connected with the other end of the resistor R2, one end of the resistor R2 and one end of the resistor R2, a contact 1 of a variable resistor RW2, a collector of the transistor Q2, an emitter of the transistor Q2 is connected with one end of a capacitor C2 and one end of the resistor R2, the other end of the capacitor C2 is connected with one end of the resistor R2 and a contact 1 of the variable resistor RW2, the other ends of the resistors R2 and R2 are grounded, a contact 2 of the variable resistor RW2 is connected with one end of the capacitor C2, a contact 3 of the variable resistor RW2 is connected with the emitter of the transistor Q2 and the other end of the capacitor C2, one end of the resistor R2, a collector of the transistor Q2 is connected with a contact 2 of the variable resistor RW2, a contact 3 of the variable resistor D2 and a positive electrode of the transistor R2, the other end of the resistor R7 and the other end of the capacitor C5 are grounded, the cathode of the diode D5 and the other end of the capacitor C6 are connected with the base of the triode Q3 and the other end of the resistor R8, the emitter of the triode Q3 is connected with one end of the resistor R9 and one end of the resistor R10, the other end of the resistor R9 is grounded, the other end of the resistor R10 is connected with the non-inverting input end of the amplifier AR3 and the inverting input end of the amplifier AR4, the inverting input end of the amplifier AR3 is connected with one end of the resistor R12, the other end of the resistor R12 is connected with the power supply +5V, the non-inverting input end of the amplifier AR4 is connected with one end of the resistor R11, the other end of the resistor R11 is connected with the other end of the resistor R11, the output end of the amplifier AR 11 is connected with one end of the resistor R11, and the other end of the resistor R.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. a signal enhancement circuit composed of a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2 is used for adjusting the signal frequency, the triode Q1, a resistor R3, a capacitor C3 and a resistor R4 have the effect of adjusting the signal frequency, the triode Q1 has the effect of amplifying signals, the resistor R3 and the resistor R4 have the function of reducing the signal potential, when abnormal signals are contained in the signals, the triode Q2 is conducted at the moment, the signals are fed back to the in-phase input end of an operational amplifier AR4, the effect of reducing the signals output by the operational amplifier AR4 is achieved, the frequency of the signals can be adjusted by adjusting the variable resistor RW1, the effect of automatically calibrating the signals is achieved, and signal errors are reduced.
2. Can adjust the signal potential that switches on of triode Q2 through adjusting variable resistance RW2, also be the effect that plays the regulation signal amplitude promptly, designed simultaneously and carried the comparison circuit that ware AR3, fortune were put the ware AR4 and constitute to signal comparison processing, can stabilize the static operating point of signal, wherein triode Q2 is for enlargiing the triode, can strengthen the signal, has stabilized the signal, has improved the stability of signal greatly.
Drawings
FIG. 1 is a block diagram of a signal calibration circuit for an electric vehicle on-board system according to the present invention.
FIG. 2 is a schematic diagram of a signal calibration circuit for an electric vehicle onboard system according to the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In the first embodiment, the signal calibration circuit for the on-board system of the electric vehicle comprises a signal receiving circuit, an enhancement comparison circuit and a compensation output circuit, wherein the signal receiving circuit receives a data signal at the input end of a signal transmission channel for receiving a signal by a control terminal of the on-board system of the electric vehicle, the data signal is filtered by a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 and then is input into the enhancement comparison circuit, the enhancement comparison circuit adjusts the signal frequency by a signal enhancement circuit consisting of a transistor Q1, a transistor Q2, a transistor Q3, a variable resistor RW1 and a variable resistor RW2, and the comparison circuit consisting of an operational amplifier AR3 and an operational amplifier AR4 is designed for comparing the signal, wherein an emitter signal of the transistor Q2 is fed back into a non-phase input end of the operational amplifier AR4 to adjust the output signal potential of the enhancement comparison circuit, and finally the compensation output circuit provides a compensation potential for a signal output port by a compensation circuit consisting of a power, meanwhile, an operational amplifier AR2 in-phase amplification enhanced comparison circuit output signal is designed, and finally the signal is output after being stabilized by a triode voltage stabilizing circuit consisting of a triode Q4 and a voltage stabilizing tube D8, namely the signal is input into a signal transmission channel for receiving signals of a vehicle-mounted system control terminal of the electric automobile;
the enhanced comparison circuit utilizes a signal enhancing circuit consisting of a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2 to adjust signal frequency, the triode Q1, a resistor R3, a capacitor C3 and a resistor R4 have the effect of adjusting signal frequency, the triode Q1 has the effect of amplifying signals, the resistor R3 and the resistor R4 have the function of reducing signal potential, the capacitor C3 is a filter capacitor, when abnormal signals are contained in the signals, the triode Q2 is conducted at the moment, signals are fed back to the non-inverting input end of an operational amplifier AR4 to reduce the effect of the signals output by the operational amplifier AR4, the frequency of the signals can be adjusted by adjusting the variable resistor RW1, the conducting signal potential of the triode Q2 can be adjusted by adjusting the variable resistor 2, namely, the effect of adjusting the amplitude of the signals is achieved, and finally, a comparison circuit consisting of the operational amplifier AR3 and the operational amplifier AR4 is designed to compare the signals, the signal working point can be stabilized, wherein the transistor Q2 is an amplifying transistor, the signal can be enhanced, the effect of automatically calibrating the signal can be realized, and the signal error is reduced, the base of the transistor Q1 is connected with one end of the resistor R1 and the resistor R2, the collector of the transistor Q1 is connected with the other end of the resistor R1, one end of the resistor R6 and one end of the resistor R8, the contact 1 of the variable resistor RW2 and the collector of the transistor Q3, the emitter of the transistor Q1 is connected with one end of the capacitor C3 and one end of the resistor R3, the other end of the capacitor C3 is connected with one end of the resistor R4 and the contact 1 of the variable resistor RW1, the other ends of the resistors R2-R4 are grounded, the contact 2 of the variable resistor RW1 is connected with one end of the capacitor C4, the contact 3 of the variable resistor RW2 is connected with the emitter of the transistor Q2 and the other end of the capacitor C2, one end of the collector of the resistor R, A contact 3 of a variable resistor RW2, an anode of a diode D5 and one end of a capacitor C6, a base of a transistor Q2 is connected to one end of a capacitor C5 and one end of a resistor R7, the other end of a resistor R7 and the other end of the capacitor C7 are grounded, a cathode of the diode D7 and the other end of the capacitor C7 are connected to a base of the transistor Q7 and the other end of the resistor R7, an emitter of the transistor Q7 is connected to one end of the resistor R7 and one end of the resistor R7, the other end of the resistor R7 is grounded, the other end of the resistor R7 is connected to a non-inverting input end of the operational amplifier AR 7 and an inverting input end of the operational amplifier AR 7, the inverting input end of the operational amplifier AR 7 is connected to one end of the resistor R7, the other end of the operational amplifier AR 7 is connected to one end of the resistor R7, and one end of the operational amplifier AR 7 is connected to an output end of the resistor R7, The other end of the resistor R16 is connected to the non-inverting input terminal of the amplifier AR 2.
In the second embodiment, on the basis of the first embodiment, the compensation output circuit uses a compensation circuit formed by a power supply +10V and a variable resistor RW3 to provide a compensation potential for a signal output port, and simultaneously, an operational amplifier AR2 is designed to amplify in phase and enhance an output signal of the comparison circuit, and finally, the output signal is stabilized by a triode RW voltage stabilizing circuit formed by a triode Q4 and a voltage stabilizing tube D8 to be output, so that the stability of the signal is further improved, that is, the output signal is input into a signal transmission channel for receiving a signal at a control terminal of an electric vehicle system, an inverting input terminal of the operational amplifier AR2 is connected to one end of a resistor R17 and a resistor R18, the other end of the resistor R17 is grounded, the other end of the resistor R18 is connected to an output terminal of the operational amplifier AR2 and a contact 2 of the variable resistor RW3, a collector of the triode Q4 and one end of a resistor R19, a contact 1 of the variable resistor RW3 is connected to a cathode of a diode D, the anode of the diode D6 is connected with one end of the resistor R14 and one end of the resistor R15, the other end of the resistor R14 is connected with the +10V power supply, the other end of the resistor R15 is connected with the anode of the diode D7, the base of the triode Q4 is connected with the other end of the resistor R19 and the cathode of the voltage regulator tube D8, the anode of the voltage regulator tube D8 is grounded, the emitter of the triode Q4 is connected with one end of the resistor R20, and the other end of the resistor R20 is connected with the signal output port.
In a third embodiment, on the basis of the first embodiment, the signal receiving circuit receives a data signal at the input end of a signal transmission channel for receiving a signal at a control terminal of an electric vehicle system, a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering and then inputting the data signal into the enhanced comparison circuit, so that the anti-interference performance of the signal is improved, one end of the inductor L1 is connected with a signal input port, the negative electrode of a voltage regulator tube D1 and one end of a capacitor C1, the positive electrode of the voltage regulator tube D1 is grounded, the other end of the capacitor C1 is grounded, the other end of the inductor L1 is connected with one end of the capacitor C2 and the base electrode of a triode Q1.
When the signal calibration circuit is used specifically, the signal calibration circuit for the electric automobile vehicle-mounted system comprises a signal receiving circuit, an enhancement comparison circuit and a compensation output circuit, wherein the signal receiving circuit receives a data signal at the input end of a signal transmission channel for receiving a signal at a control terminal of the electric automobile vehicle-mounted system, a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering and then inputting the data signal into the enhancement comparison circuit, the enhancement comparison circuit uses a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2 to form a signal enhancement circuit for adjusting the signal frequency, the triode Q1, a resistor R3, the capacitor C3 and the resistor R4 have the effect of adjusting the signal frequency, the triode Q1 has the effect of amplifying the signal, the resistor R3 and the resistor R4 have the function of reducing the signal potential, the capacitor C3 is a filter capacitor, when the signal contains an abnormal, at this moment, the triode Q2 is conducted, a feedback signal is fed into the non-inverting input end of the operational amplifier AR4, the effect of reducing the output signal of the operational amplifier AR4 is achieved, the frequency of the signal can be adjusted by adjusting the variable resistor RW1, the conducting signal potential of the triode Q2 can be adjusted by adjusting the variable resistor RW2, namely, the effect of adjusting the amplitude of the signal is achieved, finally, a comparison circuit composed of the operational amplifier AR3 and the operational amplifier AR4 is designed to compare the signal, the signal working point can be stabilized, wherein the triode Q2 is an amplifying triode which can enhance the signal, the effect of automatically calibrating the signal is achieved, the signal error is reduced, finally, the compensation output circuit adopts a compensation circuit composed of a power supply 86510V and the variable resistor RW3 to provide compensation potential for a signal output port, meanwhile, the non-inverting amplification voltage stabilizing circuit of the operational amplifier AR4 is designed to enhance the output signal of the comparison circuit, and finally, the output is stabilized through the triode, namely, the signal is input into a signal transmission channel for receiving signals of a control terminal of a vehicle-mounted system of the electric automobile.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. The signal calibration circuit for the electric automobile vehicle-mounted system comprises a signal receiving circuit, an enhancement comparison circuit and a compensation output circuit, and is characterized in that the signal receiving circuit receives a data signal at the input end of a signal transmission channel for receiving a signal by a control terminal of the electric automobile vehicle-mounted system, a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering and then inputting the data signal into the enhancement comparison circuit, the enhancement comparison circuit adjusts the signal frequency by using a signal enhancement circuit consisting of a triode Q1, a triode Q2, a triode Q3, a variable resistor RW1 and a variable resistor RW2, the comparison circuit consisting of an operational amplifier AR3 and an operational amplifier AR4 is designed for comparing and processing the signal, wherein an emitter signal of the triode Q2 is fed back into a non-phase input end of the operational amplifier AR4 for adjusting the output signal potential of the enhancement comparison circuit, and finally the compensation output circuit consists of a power supply +10V and the variable resistor RW3 for providing a compensation potential for, meanwhile, an operational amplifier AR2 in-phase amplification enhanced comparison circuit output signal is designed, and finally the signal is output after being stabilized by a triode voltage stabilizing circuit consisting of a triode Q4 and a voltage stabilizing tube D8, namely the signal is input into a signal transmission channel for receiving signals of a vehicle-mounted system control terminal of the electric automobile;
the enhanced comparison circuit comprises a transistor Q1, a base of a transistor Q1 is connected with one end of a resistor R1 and a resistor R2, a collector of the transistor Q2 is connected with the other end of the resistor R2, one end of the resistor R2 and one end of the resistor R2, a contact 1 of a variable resistor RW2, a collector of the transistor Q2, an emitter of the transistor Q2 is connected with one end of a capacitor C2 and one end of the resistor R2, the other end of the capacitor C2 is connected with one end of the resistor R2 and a contact 1 of the variable resistor RW2, the other ends of the resistors R2 and R2 are grounded, a contact 2 of the variable resistor RW2 is connected with one end of the capacitor C2, a contact 3 of the variable resistor RW2 is connected with the emitter of the transistor Q2 and the other end of the capacitor C2, one end of the resistor R2, a collector of the transistor Q2 is connected with a contact 2 of the variable resistor RW2, a contact 3 of the variable resistor D2 and a positive electrode of the transistor R2, the other end of the resistor R7 and the other end of the capacitor C5 are grounded, the cathode of the diode D5 and the other end of the capacitor C6 are connected with the base of the triode Q3 and the other end of the resistor R8, the emitter of the triode Q3 is connected with one end of the resistor R9 and one end of the resistor R10, the other end of the resistor R9 is grounded, the other end of the resistor R10 is connected with the non-inverting input end of the amplifier AR3 and the inverting input end of the amplifier AR4, the inverting input end of the amplifier AR3 is connected with one end of the resistor R12, the other end of the resistor R12 is connected with the power supply +5V, the non-inverting input end of the amplifier AR4 is connected with one end of the resistor R11, the other end of the resistor R11 is connected with the other end of the resistor R11, the output end of the amplifier AR 11 is connected with one end of the resistor R11, and the other end of the resistor R.
2. The signal calibration circuit for the electric vehicle on-board system according to claim 1, wherein the compensation output circuit comprises an operational amplifier AR2, an inverting input terminal of the operational amplifier AR2 is connected to one terminal of a resistor R17 and a resistor R18, the other terminal of the resistor R17 is connected to ground, the other terminal of the resistor R18 is connected to an output terminal of the operational amplifier AR2 and a contact 2 of a variable resistor RW3, a collector of a transistor Q4 and one terminal of a resistor R19, a contact 1 of the variable resistor RW3 is connected to a cathode of a diode D7, a contact 3 of the variable resistor RW3 is connected to a cathode of a diode D6 and a collector of a transistor Q3, an anode of the diode D6 is connected to one terminal of a resistor R14 and a resistor R15, the other terminal of the resistor R14 is connected to a power supply +10V, the other terminal of the resistor R14 is connected to an anode of a diode D14, a base of the transistor Q14 is connected to the other terminal of the resistor R14 and a cathode of an emitter of the transistor D14, the transistor D, the other end of the resistor R20 is connected with the signal output port.
3. The signal calibration circuit for the electric vehicle on-board system according to claim 1 or 2, wherein the signal receiving circuit comprises an inductor L1, one end of the inductor L1 is connected with the signal input port and the negative electrode of a voltage regulator tube D1 and one end of a capacitor C1, the positive electrode of the voltage regulator tube D1 is grounded, the other end of the capacitor C1 is grounded, the other end of the inductor L1 is connected with one end of a capacitor C2 and the base electrode of a triode Q1, and the other end of the capacitor C2 is grounded.
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| CN201810850446.1A CN109116147B (en) | 2018-07-28 | 2018-07-28 | Signal calibration circuit for electric automobile vehicle-mounted system |
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| CN201810850446.1A CN109116147B (en) | 2018-07-28 | 2018-07-28 | Signal calibration circuit for electric automobile vehicle-mounted system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109831180B (en) * | 2019-02-26 | 2023-03-21 | 郑州力通水务有限公司 | Signal compensation circuit for water supply remote monitoring system |
| CN109849681A (en) * | 2019-03-30 | 2019-06-07 | 郝蕾 | The torque signal compensation circuit of the four-wheel drive system of electric car |
| CN110971229B (en) * | 2019-12-26 | 2020-08-25 | 郑州科技学院 | Electronic signal calibration system |
| CN111953306B (en) * | 2020-08-26 | 2021-03-02 | 郑州工程技术学院 | Big data multi-center combined control system |
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| CN101551689A (en) * | 2008-03-31 | 2009-10-07 | 上海电气自动化设计研究所有限公司 | Constant-current source circuit for hot resistance calibration system of device aging screening machine |
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