CN110161348B - New energy automobile fault detection system - Google Patents
New energy automobile fault detection system Download PDFInfo
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- CN110161348B CN110161348B CN201910562149.1A CN201910562149A CN110161348B CN 110161348 B CN110161348 B CN 110161348B CN 201910562149 A CN201910562149 A CN 201910562149A CN 110161348 B CN110161348 B CN 110161348B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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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
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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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The invention discloses a new energy automobile fault detection system, which comprises a frequency acquisition circuit, a feedback regulation circuit and a frequency selection transmitting circuit, wherein the frequency acquisition circuit acquires the signal frequency of an input end of an analog signal transmission channel, the feedback regulation circuit uses an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to form a composite circuit to filter disturbance signal noise, simultaneously uses a triode Q3 and a triode Q4 to form a push-pull circuit to reduce signal conduction loss, wherein the operational amplifier AR2 feeds back an output signal of the operational amplifier AR3, which is the base potential of the triode Q2, simultaneously uses a silicon controlled VTL1 and a voltage regulator tube D2 to form an abnormal signal detection circuit, and finally, the frequency selection transmitting circuit uses a resistor R10-resistor R12 and a capacitor C5-capacitor C7 to screen out a signal with single frequency from the frequency selection circuit to form an error correction signal of a control terminal of the new energy automobile fault detection system, that is, the accuracy of the power signal received by the control terminal is improved.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a new energy automobile fault detection system.
Background
At present, an automobile fault detection system comprises an automobile signal acquisition module, a control terminal, a network communication module and a display module, wherein the automobile signal acquisition module, the network communication module and the display module are all connected to the control terminal, and the automobile signal acquisition module acquires important parameters of a target automobile in real time; the control module is used for controlling each module and converting a communication protocol; the network communication module is used for sending and receiving data to the control terminal through a communication network; the display module is used for displaying automobile fault information and maintenance prompts, wherein the network communication module comprises an analog signal transmission channel, the analog signal transmission channel is a channel for receiving signals of the new energy automobile power signal acquisition module by the new energy automobile fault detection system control terminal, the power signal acquisition module is one part of the automobile signal acquisition module, errors are large due to time-varying property of automobile power signals, and the accuracy of the signals received by the control terminal needs to be improved for timely automobile power fault detection.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a new energy vehicle fault detection system, which has the characteristics of ingenious design and humanized design, and can monitor the signal frequency at the input end of the analog signal transmission channel in real time, and automatically calibrate the signal and convert the signal into an error correction signal of the new energy vehicle fault detection system control terminal.
The technical scheme for solving the problem is that the new energy automobile fault detection system comprises an automobile signal acquisition module, a control terminal, a network communication module and a display module, wherein the automobile signal acquisition module, the network communication module and the display module are all connected to the control terminal, and the automobile signal acquisition module acquires important parameters of a target automobile in real time; the control module completes control of each module and conversion of communication protocols; the network communication module sends and receives data to the control terminal through a communication network; the display module is used for displaying automobile fault information and maintenance prompts, wherein the network communication module comprises an analog signal transmission channel, the automobile signal acquisition module comprises a power acquisition module, the power acquisition module acquires power signals output by an automobile motor during working, the display module comprises a frequency acquisition circuit, a feedback regulation circuit and a frequency-selecting transmitting circuit, the frequency acquisition circuit acquires signal frequency at the input end of the analog signal transmission channel, the analog signal transmission channel is a channel for a new energy automobile fault detection system control terminal to receive signals of the new energy automobile power signal acquisition module, the feedback regulation circuit utilizes an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to form a composite circuit to filter disturbance signal noise, simultaneously utilizes a triode Q3 and a triode Q4 to form a push-pull circuit to reduce signal conduction loss, and the operational amplifier AR2 feeds back signals output by the operational amplifier AR3, the voltage of the base electrode of a triode Q2 is applied, meanwhile, a thyristor VTL1 and a voltage regulator tube D2 are used for forming an abnormal signal detection circuit detection signal, one circuit of the abnormal signal detection signal is input into the inverting input end of an operational amplifier AR3, the other circuit of the abnormal signal detection circuit detection signal is the voltage of the emitter of the triode Q1, the base electrode of the triode Q1 is used for outputting a signal by a push-pull circuit, finally, a frequency selection emitting circuit uses a resistor R10-resistor R12 and a capacitor C5-capacitor C7 for forming a frequency selection circuit for selecting a signal with single frequency, and the signal is sent into a control terminal.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. a composite circuit consisting of an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 is used for filtering disturbance signal noise, the capacitor C4 is a decoupling capacitor, high-frequency signal noise is released to the ground through a resistor R2, and meanwhile, the resistance values of a resistor R3 and a resistor R5 are different, so that the operational amplifier AR1 and the operational amplifier AR3 are used for adjusting the signal difference value and filtering disturbance signal interference, and meanwhile, a push-pull circuit consisting of a triode Q3 and a triode Q4 is used for reducing signal conduction loss and ensuring signal intensity;
2. in order to further ensure the accuracy of an error correction signal and ensure the sufficient stability of signal amplitude and frequency, an operational amplifier AR2 is firstly used for feeding back an output signal of the operational amplifier AR3, a triode Q2 high-level conduction property is utilized, a high-level signal is taken out and forms an abnormal signal detection circuit detection signal through a silicon controlled rectifier VTL1 and a voltage regulator D2, the conduction voltage of the silicon controlled rectifier VTL1 is utilized to judge an abnormal signal, the abnormal signal is divided into two paths, one path of the abnormal signal is input into an inverting input end of the operational amplifier AR3, the amplitude of the output signal of the operational amplifier AR3 is reduced, the effect of adjusting the signal amplitude is achieved, meanwhile, the two paths of the abnormal signal are the emitter potential of a triode Q5, the base electrode of a triode Q1 is a push-pull circuit output signal, the potential difference between the two paths is judged by utilizing a triode Q1, the amplitude of the output;
3. a frequency selection circuit consisting of the resistor R10, the resistor R12 and the capacitor C5 and the capacitor C7 is used for screening out a signal with single frequency, the frequency modulation effect of the signal is achieved, the signal frequency is stabilized, the signal frequency is sent to a control terminal of the new energy automobile fault detection system through the signal transmitter E1, an error correction signal of the control terminal of the new energy automobile fault detection system is provided, and the accuracy of a power signal received by the control terminal is improved.
Drawings
Fig. 1 is a schematic diagram of a frequency acquisition circuit in the new energy vehicle fault detection system according to the invention.
Fig. 2 is a schematic diagram of a feedback regulation circuit in the new energy vehicle fault detection system according to the present invention.
Fig. 3 is a schematic diagram of a frequency-selecting transmitting circuit in the new energy vehicle fault detection system according to the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The embodiment I provides a new energy automobile fault detection system, which comprises a frequency acquisition circuit, a feedback regulation circuit and a frequency selection emission circuit, wherein the frequency acquisition circuit acquires the signal frequency of an input end of an analog signal transmission channel, the analog signal transmission channel is a channel for a new energy automobile fault detection system control terminal to receive signals of a new energy automobile power signal acquisition module, the feedback regulation circuit utilizes an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to form a composite circuit to filter disturbance signal noise, meanwhile, a triode Q3 and a triode Q4 are utilized to form a push-pull circuit to reduce signal conduction loss, an operational amplifier AR2 feeds back signals output by an operational amplifier AR3 to be triode Q2 base electrode potential, simultaneously utilizes a silicon controlled VTL1 and a voltage stabilizing tube D2 to form abnormal signal detection circuit detection signals, one path is input into an inverse phase input end of the operational amplifier AR3, and two paths are triode Q1 emitter electrode potentials, the base of the triode Q1 is used for outputting signals by a push-pull circuit, and finally, a frequency selection transmitting circuit is formed by a resistor R10-resistor R12 and a capacitor C5-capacitor C7 to screen out signals with single frequency, and the signals are transmitted into a control terminal of the new energy automobile fault detection system through a signal transmitter E1;
the feedback calibration circuit utilizes an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to form a composite circuit to filter disturbance signal noise, the capacitor C4 is a decoupling capacitor to discharge high-frequency signal noise to the ground through a resistor R2, and simultaneously the resistance values of the resistor R3 and the resistor R5 are different, so that the operational amplifier AR1 and the operational amplifier AR3 adjust the signal difference value to filter disturbance signal interference, and simultaneously utilizes a triode Q3 and a triode Q4 to form a push-pull circuit to reduce signal conduction loss and ensure signal strength, so as to further ensure the accuracy of an error correction signal, the signal amplitude and frequency are sufficiently stable, the operational amplifier AR2 is utilized to feed back an output signal of the operational amplifier AR3, the triode Q2 high-level conduction property is utilized to take out a high-level signal to form an abnormal signal detection circuit detection signal through a silicon controlled VTL1 and a voltage stabilizing tube D2, the conduction voltage of the silicon controlled rectifier VTL1 is utilized to judge, an abnormal signal is divided into two paths, one path is input into an inverting input end of an operational amplifier AR3 to reduce the amplitude of an output signal of the operational amplifier AR3 and achieve the effect of adjusting the amplitude of the signal, the other path is a triode Q1 emitter potential, the base of a triode Q1 is a push-pull circuit output signal, the triode Q1 is used for judging the potential difference between the two signals, the amplitude of the output signal of the push-pull circuit is further corrected, a feedback signal is fed into an inverting input end of the operational amplifier AR1 to stabilize the amplitude of the signal, the non-inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C4, the other end of the capacitor C4 is connected with the collector of a triode Q1 and one end of a resistor R2, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R3 and one end of a capacitor C3, the output end of the operational amplifier AR1 is connected with one end of a resistor R4, the other end of the non, The other end of the resistor R3 and the other end of the resistor R5 and the other end of the capacitor C3 are grounded, the output end of the operational amplifier AR3 is connected with the emitter of the transistor Q3 and the emitter of the transistor Q3, the base of the transistor Q3 is connected with the base of the transistor Q3 and the non-inverting input end of the resistor R3, the non-inverting input end of the operational amplifier AR3, the base of the transistor Q3 is connected with the emitter of the transistor Q3 and the emitter of the transistor Q3, the emitter of the transistor Q3 is connected with one end of the resistor R3 and the inverting input end of the operational amplifier AR3, the other end of the resistor R3 is connected with the cathode of the thyristor VTL 3, the control electrode of the thyristor VTL 3 is connected with the output end of the transistor R3, one end of the capacitor C3 and the anode of the regulator D3, the base of the resistor R3 is connected with the output end of the resistor R3 and the inverting input end of the transistor R3, the collector of the transistor R3, the inverting input end of the operational amplifier AR3 is connected with the transistor, the collector of the triode Q3 is connected with the +5V power supply, the collector of the triode Q4 is connected with one end of the variable resistor R13, and the other end of the variable resistor R13 is grounded.
In the second embodiment, on the basis of the first embodiment, the frequency-selective transmitting circuit uses a resistor R10-a resistor R12 and a capacitor C5-a capacitor C7 to form a frequency-selective circuit to screen out a signal with a single frequency, so that the frequency modulation effect on the signal is realized, the frequency of the signal is stabilized, the signal is transmitted into a control terminal of the new energy vehicle fault detection system through a signal transmitter E1, and an error correction signal is provided for the control terminal of the new energy vehicle fault detection system.
In a third embodiment, on the basis of the first embodiment, the frequency acquisition circuit selects a frequency collector J1 with the model of SJ-ADC to acquire the signal frequency at the input end of the analog signal transmission channel, the power supply end of the frequency collector J1 is connected to +5V, the ground end of the frequency collector J1 is grounded, the output end of the frequency collector J1 is connected to the negative electrode of a voltage regulator tube D1 and one end of a resistor R1, the positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected to one end of a capacitor C1 and the collector of a triode Q1, and the other end of the capacitor C1 is grounded.
When the invention is used in particular, the new energy automobile fault detection system comprises a frequency acquisition circuit, a feedback regulation circuit and a frequency selection transmitting circuit, wherein the frequency acquisition circuit acquires the signal frequency of the input end of an analog signal transmission channel, the analog signal transmission channel is a channel for receiving signals of a new energy automobile power signal acquisition module by a new energy automobile fault detection system control terminal, the feedback regulation circuit utilizes a composite circuit consisting of an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to filter disturbance signal noise, the capacitor C4 is a decoupling capacitor to discharge high-frequency signal noise to the ground through a resistor R2, simultaneously, the resistor R3 and the resistor R5 have the resistance difference, so that the operational amplifier AR1 and the operational amplifier AR3 regulate the signal difference and filter disturbance signal interference, and simultaneously, a push-pull circuit consisting of a triode Q3 and a triode Q4 is utilized to reduce the conduction loss, the signal intensity is ensured, in order to further ensure the accuracy of an error correction signal, the sufficient stability of the signal amplitude and frequency is required to be ensured, an operational amplifier AR2 is firstly used for feeding back an output signal of the operational amplifier AR3, a triode Q2 high-level conduction property is utilized, a high-level signal is taken out to form an abnormal signal detection circuit detection signal through a silicon controlled rectifier VTL1 and a voltage regulator D2, the conduction voltage of the silicon controlled rectifier VTL1 is utilized to judge an abnormal signal, the abnormal signal is divided into two paths, one path of the abnormal signal is input into an inverse phase input end of the operational amplifier AR3, the amplitude of the output signal of the operational amplifier AR3 is reduced, the effect of adjusting the signal amplitude is achieved, meanwhile, the two paths of the abnormal signal are a triode Q1 emitter potential, a triode Q1 base electrode is a push-pull circuit output signal, the potential difference between the two paths is judged by utilizing a triode Q1, and finally, the frequency selection transmitting circuit uses a resistor R10-resistor R12 and a capacitor C5-capacitor C7 to form a frequency selection circuit to screen out a signal with single frequency, and the signal is sent to a control terminal of the new energy automobile fault detection system through a signal transmitter E1.
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. A new energy automobile fault detection system comprises an automobile signal acquisition module, a control terminal, a network communication module and a display module, wherein the automobile signal acquisition module, the network communication module and the display module are all connected to the control terminal, and the automobile signal acquisition module acquires important parameters of a target automobile in real time; the control terminal completes the control of each module and the conversion of the communication protocol; the network communication module sends and receives data to the control terminal through a communication network; the display module is used for displaying automobile fault information and maintenance prompts, wherein the network communication module comprises an analog signal transmission channel, the automobile signal acquisition module comprises a power acquisition module, and the power acquisition module acquires output power signals of an automobile motor during working;
the frequency acquisition circuit acquires signal frequency of an input end of an analog signal transmission channel, the analog signal transmission channel is a channel for a control terminal of a new energy automobile fault detection system to receive signals of a new energy automobile power signal acquisition module, the feedback regulation circuit utilizes an operational amplifier AR1, an operational amplifier AR3, a capacitor C3 and a capacitor C4 to form a composite circuit to filter disturbance signal noise, and simultaneously utilizes a triode Q3 and a triode Q4 to form a push-pull circuit to reduce signal conduction loss, wherein the operational amplifier AR2 feeds back an output signal of the operational amplifier AR3, the base potential of a triode Q2, the base potential of a thyristor VTL1 and a voltage regulator D2 to form an abnormal signal detection circuit detection signal, one circuit is input into an inverse phase input end of the operational amplifier AR3, the other circuit is emitter potential of a triode Q1, the base of the triode Q1 is an output signal of the push-pull circuit, and finally the frequency selection emission, A frequency selection circuit consisting of the resistor R11, the resistor R12, the capacitor C5, the capacitor C6 and the capacitor C7 is used for screening out a signal with single frequency, and the signal is sent to a control terminal of the new energy automobile fault detection system through the signal transmitter E1;
the feedback regulation circuit comprises an operational amplifier AR1, wherein a non-inverting input terminal of the operational amplifier AR1 is connected with one end of a capacitor C4, the other end of the capacitor C4 is connected with a collector of a transistor Q4 and one end of a resistor R4, an inverting input terminal of the operational amplifier AR 4 is connected with one end of the resistor R4 and one end of the capacitor C4, an output terminal of the operational amplifier AR 4 is connected with a non-inverting input terminal of the operational amplifier AR 4, the inverting input terminal of the operational amplifier AR 4 is connected with one end of the resistor R4, the other end of the resistor R4 and the other end of the capacitor C4 are grounded, an output terminal of the operational amplifier AR 4 is connected with a base of the transistor Q4, one end of the transistor Q4 and one end of the resistor R4, the non-inverting input terminal of the operational amplifier AR 4, a base of the transistor R4 is connected with an emitter of the transistor Q4 and an emitter of the transistor Q4, and a negative electrode of the transistor R4, and the other end of the thyristor R4 are connected with a negative electrode of the transistor L36, the control electrode of the controlled silicon VTL1 is connected with the resistor R7, one end of the capacitor C2 and the anode of the voltage regulator tube D2, the other ends of the resistor R7 and the capacitor C2 are grounded, the anode of the controlled silicon VTL1 is connected with the cathode of the voltage regulator tube D2 and the emitter of the triode Q2, the base of the triode Q2 is connected with the output end of the amplifier AR2 and the other end of the resistor R9, the inverting input end of the amplifier AR2 is grounded, the collector of the triode Q2 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with the power supply +5V, the collector of the triode Q3 is connected with the power supply +5V, the collector of the triode Q4 is connected with one end of the variable resistor R13.
2. The new energy automobile fault detection system as claimed in claim 1, wherein the frequency-selective transmitting circuit comprises a resistor R10, one end of the resistor R10 is connected with one end of a capacitor C5 and an emitter of a transistor Q3, the other end of the resistor R10 is connected with one end of a resistor R11 and one end of a capacitor C7, the other end of the capacitor C5 is connected with one end of a resistor R12 and one end of a capacitor C6, the other ends of the resistor R12 and the capacitor C7 are connected with ground, the other end of the resistor R11 is connected with the other end of a capacitor C6 and one end of a resistor R14, and the other end of the resistor R14 is connected with a signal transmitter E1.
3. The new energy automobile fault detection system as claimed in claim 1, wherein the frequency acquisition circuit comprises a frequency collector J1 with a model number of SJ-ADC, a power supply end of a frequency collector J1 is connected with +5V, a ground end of the frequency collector J1 is grounded, an output end of the frequency collector J1 is connected with a negative electrode of a voltage regulator tube D1 and one end of a resistor R1, a positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected with one end of a capacitor C1 and a collector of a triode Q1, and the other end of the capacitor C1 is grounded.
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| CN201910562149.1A CN110161348B (en) | 2019-06-26 | 2019-06-26 | New energy automobile fault detection system |
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| CN201910562149.1A CN110161348B (en) | 2019-06-26 | 2019-06-26 | New energy automobile fault detection system |
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| CN110460796B (en) * | 2019-08-30 | 2021-04-27 | 中瑞恒（北京）科技有限公司 | Industrial equipment operation monitoring signal regulating circuit |
| CN110658805B (en) * | 2019-09-30 | 2020-12-01 | 天津市盛丹电子技术发展有限公司 | Signal calibration circuit of industrial building fire-fighting system |
| CN110849609B (en) * | 2019-11-29 | 2021-04-27 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN111240230A (en) * | 2020-02-28 | 2020-06-05 | 李韬 | Medical ultrasonic detection control system |
| CN111458600A (en) * | 2020-05-06 | 2020-07-28 | 白有华 | 5G communication cable fault detection system |
| CN113242095B (en) * | 2021-06-29 | 2022-05-06 | 京鼎工程建设有限公司 | Computer electronic communication system |
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| US8908797B2 (en) * | 2012-03-07 | 2014-12-09 | Samsung Electronics Co., Ltd. | Apparatus and method for time alignment of an envelope tracking power amplifier |
| CN207504862U (en) * | 2017-10-11 | 2018-06-15 | 吕锋 | A kind of telecommunications early warning system |
| CN109743057B (en) * | 2019-01-10 | 2020-04-03 | 郑州工程技术学院 | Thing networking data transmission correction equipment |
| CN109831262B (en) * | 2019-03-28 | 2021-04-16 | 黄小花 | Intelligent low temperature stores up grain system signal calibration circuit |
| CN109849681A (en) * | 2019-03-30 | 2019-06-07 | 郝蕾 | The torque signal compensation circuit of the four-wheel drive system of electric car |
| CN109889795B (en) * | 2019-04-17 | 2020-09-18 | 冯芊雅 | Household video monitoring system |
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