A new energy vehicle central control system

Abstract

The present invention relates to the technical field of intelligent central control, and provides a central control system for a new energy vehicle, comprising: an MCU control circuit, a data acquisition circuit, a data interaction circuit, a power management circuit and a drive circuit, wherein the MCU control circuit comprises an MCU control chip and an MCU peripheral circuit, the data acquisition circuit comprises a video acquisition circuit and a video sound effect processing circuit, the data interaction circuit can adopt multiple modes to perform data interaction with peripherals, the power management circuit is connected to the MCU control chip, and is used to receive a power management instruction issued by the MCU control chip, and the drive circuit comprises an inverter drive circuit, an isolation drive circuit and a radar drive circuit; the present invention can manage the power supply of a vehicle, and at the same time perform data acquisition and data interaction when the vehicle is driving, and transmit the data to the MCU control chip and the peripheral circuit, and then realize positioning drive of the central control system of the new energy vehicle through the MCU control chip.

Description

Technical Field

[0001] The present invention relates to the field of intelligent central control technology, and in particular to a central control system for a new energy vehicle. Background Art

[0002] The present invention is a central control system for new energy vehicles. New energy vehicles can be accurately positioned and displayed, and power can be supplied to new energy vehicles at the same time, and the smooth and safe power supply can be ensured. At the same time, data collection and data interaction can be completed during the rescue process, which can effectively improve the efficiency of rescue work and optimize the rescue procedure. The system mainly includes a power management circuit, a data acquisition circuit, a data interaction circuit, a drive circuit, and an MCU control circuit. The system realizes the intelligent central control of new energy vehicles through the MCU control circuit. The power management circuit can control the multi-string lithium battery management DEMO system as an independent lithium battery management system, and discharge the lithium battery for electrical control of the vehicle. Power replenishment, the system has data acquisition and data interaction circuits, which can collect road information during the rescue, and provide real-time feedback of the collected information through the MCU control circuit. The data interaction circuit can interact with the MCU control chip and peripherals in different ways. The drive circuit includes an inverter drive circuit, an isolation drive circuit, and a radar drive circuit. The inverter drive circuit can provide inverter drive during power replenishment to ensure the efficiency of power replenishment. The isolation drive circuit is used to ensure the safety of power transmission, and performs power isolation on power transmission to ensure the safety of power supply. The radar drive circuit is connected to the corresponding GPS positioning circuit to send precise positioning information to ensure the smooth progress of the rescue work. Summary of the invention

[0003] The problem solved by the present invention is to collect and interact with data while the vehicle is driving during the rescue process, and transmit the data to an MCU control chip and peripheral circuits, thereby realizing a new energy vehicle central control system for the rescue of the new energy vehicle through the MCU control chip.

[0004] To solve the above problems, the present invention provides a new energy vehicle central control system, including: an MCU control circuit, a data acquisition circuit, a data interaction circuit, a power management circuit and a drive circuit, the MCU control circuit includes an MCU control chip and an MCU peripheral circuit, the data acquisition circuit includes a video acquisition circuit and a video and sound processing circuit, the data interaction circuit can adopt a variety of methods to interact with peripherals for data, the power management circuit is connected to the MCU control chip, and is used to receive a power management instruction issued by the MCU control chip, and the drive circuit includes an inverter drive circuit, an isolation drive circuit, and a radar drive circuit.

[0005] Furthermore, the MCU peripheral circuit includes an MCU filter capacitor circuit, a JTAG interface circuit, an MCU crystal oscillator circuit, and an MCU limit switch circuit. The input end of the MCU control chip is connected to a power supply, the output end is connected to the JTAG interface circuit, the protection end is connected to the MCU filter capacitor circuit, and the control end is connected to the MCU limit switch circuit. The input end of the JTAG interface circuit is connected to a power supply via a resistor and a capacitor, respectively, and the output end is grounded.

[0006] Furthermore, the video acquisition circuit includes a first image sensor chip, a second image sensor chip, a video conversion circuit, and a video crystal oscillator circuit. The input end of the first image sensor chip is connected to a power supply via a pull-up resistor and a pull-up capacitor, and the output end is connected to the second image sensor chip; the input end of the second image sensor chip is connected to a power supply via a pull-up resistor, and the output end is connected to ground via a resistor and a capacitor, and the conversion end is connected to the video conversion circuit. The video conversion circuit includes a video conversion chip and a video connection interface. The input end of the video conversion chip is connected to a power supply via an inductor, and the output end is connected to the input end of the video connection interface. The output end of the video connection interface is grounded. The signal end of the video conversion chip is connected to the video crystal oscillator circuit. The input end of the video crystal oscillator circuit is connected to a power supply, and the output end is grounded via a resistor.

[0007] Furthermore, the video and sound processing circuit includes a circuit converter chip, an analog-to-digital converter chip, an audio power amplifier chip, and an audio connection interface. The input end of the circuit converter chip is connected to the power supply via a pull-up resistor, the output end is connected to the analog-to-digital converter chip, the protection end is grounded via a capacitor, and the control end is connected to the MCU control chip. The input end of the analog-to-digital converter chip is connected to the power supply via a pull-up resistor, the output end is connected to the audio power amplifier chip, and the protection end is grounded via a capacitor. The input end of the audio power amplifier chip is connected to the power supply via a pull-up resistor, the output end is connected to the audio connection interface, the protection end is grounded via a voltage regulator tube and a filter capacitor, and the control end is connected to the MCU control chip.

[0008] Furthermore, the data interaction circuit includes a 485 communication circuit and a GPS positioning circuit, the 485 communication circuit includes a 485 communication chip and a 485 connection interface, the input end of the 485 communication chip is connected to the power supply, the protection end is grounded through a voltage regulator tube, the output end is connected to the 485 connection interface, and the control end is connected to the MCU control chip.

[0009] Furthermore, the GPS positioning circuit includes a voltage regulator circuit, a first data card chip, a second data card chip, a data card interface, a serial communication chip, a GPS chip, and a transistor circuit. The input end of the first data card chip is connected to a power supply, the output end is connected to the second data card chip, and the protection end is connected to the voltage regulator circuit; the input end of the serial communication chip is connected to a power supply, the signal end is connected to the second data card chip via a resistor and a capacitor, the output end is connected to the data card interface, and the protection end is connected to the voltage regulator circuit; the input end of the GPS chip is connected to a power supply via an inductor, the output end is connected to a positioning antenna, and the control end is connected to the MCU control chip; the input end of the second data card chip is connected to a power supply, the output end is connected to a positioning antenna, the control end is connected to the MCU control chip, and the regulation end is connected to the transistor circuit.

[0010] Furthermore, the power management circuit includes a power management chip, an isolation tube circuit, an optocoupler circuit, a transformer circuit, and a USB interface circuit. The input end of the power management chip is connected to the base of the transistor, the emitter of the transistor is grounded via a resistor and a light-emitting diode, and the collector is connected to the MCU control chip. The first output end of the power management chip is connected to the optocoupler circuit, the input end of the optocoupler circuit is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip. The second output end of the power management chip is connected to the input end of the USB interface circuit, the output end of the USB interface circuit is connected to the transformer circuit, the protection end of the power management chip is connected to the isolation tube circuit, and the control end is connected to the MCU control chip.

[0011] Furthermore, the inverter drive circuit includes an inverter isolation chip, an inverter MOS tube circuit, an inverter inductor circuit, an inverter sensor chip, and an inverter operational amplifier circuit. The input end of the inverter isolation chip is connected to a power supply, the output end is grounded via a capacitor, and the control end is connected to the MCU control chip. The inverter MOS tube circuit includes a first MOS tube, a second MOS tube, and a third MOS tube. The drain of the first MOS tube is connected to the power supply, the gate is connected to the MCU control chip, and the source is connected to the source of the second MOS tube. The gate of the second MOS tube is connected to the MCU control chip, the source is connected to the inverter sensor chip, the drain is connected to the source of the third MOS tube, the gate of the third MOS tube is connected to the MCU control chip, and the drain is grounded. The input end of the inverter sensor chip is connected to the input end of the inverter inductor circuit, the output end of the inverter inductor circuit is grounded, the control end is connected to the MCU control chip, the output end of the inverter sensor chip is connected to the inverter operational amplifier circuit, the input end of the inverter operational amplifier circuit is connected to the power supply, and the control end is connected to the MCU control chip.

[0012] Furthermore, the isolation driving circuit includes an isolation optocoupler and an isolation MOS tube circuit, the input end of the isolation optocoupler is connected to the power supply, the output end is connected to the MCU control chip, the control end is connected to the gate of the isolation MOS tube circuit via a resistor, the drain of the isolation MOS tube is connected to the MCU control chip, the source is grounded, and the voltage regulator is arranged between the power supply and the ground.

[0013] Further, the radar driving circuit includes a radar driving chip, a radar operational amplifier circuit, a transformer circuit, and a speaker circuit. The input end of the radar driving chip is connected to the power supply through a voltage regulator tube, the control end is connected to the MCU control chip, and the output end is connected to the input end of the transformer circuit. The first output end of the transformer circuit is connected to the input end of the speaker circuit, and the output end of the speaker circuit is grounded. The second output end of the transformer circuit is connected to the radar operational amplifier circuit. The radar operational amplifier circuit includes a first radar operational amplifier chip, a second radar operational amplifier chip, a first radar triode, and a second radar triode. The input end of the first radar operational amplifier chip is connected to the power supply, the output end is connected to the second radar operational amplifier chip, the control end is connected to the collector of the first radar triode, the emitter of the first radar triode is grounded, and the base is connected to the transformer circuit. The input end of the second radar operational amplifier chip is connected to the power supply, the output end is connected to the base of the second radar triode, the emitter of the second radar triode is grounded, and the collector is connected to the MCU control chip.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the system mainly includes a power management circuit, a data acquisition circuit, a data interaction circuit, a drive circuit, and an MCU control circuit. The system realizes the intelligent central control of new energy vehicles through the MCU control circuit. The power management circuit can control the multi-string lithium battery management DEMO system as an independent lithium battery management system, and discharge the lithium battery to supply power to the vehicle. The system has data acquisition and data interaction circuits, which can collect road information during the rescue, and provide real-time feedback of the collected information through the MCU control circuit. The data interaction circuit can communicate with the MCU control chip and peripherals in different ways. According to the interaction, the drive circuit includes an inverter drive circuit, an isolation drive circuit, and a radar drive circuit. The inverter drive circuit can provide inverter drive during power replenishment to ensure the efficiency of power replenishment. The isolation drive circuit is used to ensure the safety of power transmission and to isolate the power transmission to ensure the safety of power replenishment. The radar drive circuit is connected to the corresponding GPS positioning circuit and adopts a car-grade series radar drive chip. It integrates ultrasonic transmission and reception and uses two dual radar drive chips. The chip drives the ultrasonic transducer to emit ultrasonic waves, and the front-end AFE is used to collect data through the receiving amplification acquisition and filtering circuits, and the data is given to the MCU central processor to ensure the smooth progress of the rescue work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the principle structure of the overall structure of Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic diagram of the principle structure of the MCU control circuit of Example 2 of the present invention;

[0017] Figure 3 Schematic diagram of the principle structure of the video acquisition circuit of Embodiment 3 of the present invention;

[0018] Figure 4 Schematic diagram of the principle structure of a video and sound effect processing circuit according to Embodiment 4 of the present invention;

[0019] Figure 5 This is a schematic diagram of the principle structure of a 485 communication circuit according to Embodiment 5 of the present invention;

[0020] Figure 6 This is a schematic diagram of the principle structure of the GPS positioning circuit of Example 6 of the present invention;

[0021] Figure 7 Schematic diagram of the principle structure of the power management circuit of Embodiment 7 of the present invention;

[0022] Figure 8 Schematic diagram of the principle structure of the inverter drive circuit of Example 8 of the present invention;

[0023] Fig. 9 Schematic diagram of the principle structure of the isolation driving circuit of Embodiment 9 of the present invention;

[0024] Fig.10 Schematic diagram of the principle structure of the radar driving circuit of embodiment 10 of the present invention.

[0025] Description of reference numerals:

[0026] 1-MCU control circuit; 2-data acquisition circuit; 3-data interaction circuit; 4-power management circuit

[0027] 5- Driving circuit. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0031] like Figure 1 As shown, the present invention provides a new energy vehicle central control system, including: an MCU control circuit 1, a data acquisition circuit 2, a data interaction circuit 3, a power management circuit and a drive circuit, the MCU control circuit 1 includes an MCU control chip and an MCU peripheral circuit, the data acquisition circuit 2 includes a video acquisition circuit and a video and sound effect processing circuit, the data interaction circuit 3 can adopt a variety of methods to interact with peripherals for data, the power management circuit is connected to the MCU control chip, and is used to receive a power management instruction issued by the MCU control chip, and the drive circuit includes an inverter drive circuit, an isolation drive circuit, and a radar drive circuit.

[0032] like Figure 2 As shown, in one embodiment of the present invention, the MCU peripheral circuit includes an MCU filter capacitor circuit, a JTAG interface circuit, an MCU crystal oscillator circuit, and an MCU limit switch circuit. The input end of the MCU control chip is connected to a power supply, the output end is connected to the JTAG interface circuit, the protection end is connected to the MCU filter capacitor circuit, the control end is connected to the MCU limit switch circuit, the input end of the JTAG interface circuit is connected to the power supply via a resistor and a capacitor, and the output end is grounded.

[0033] It should be noted that, in this embodiment, pins 76 and 77 of the MCU control chip are grounded via capacitors C31 and C32 respectively, the MCU crystal oscillator circuit is arranged between pins 76 and 77 of the MCU control chip, the input end of pin 160 of the MCU control chip is connected to the power supply via a pull-up resistor, and the output end is grounded via a pull-down capacitor, the MCU limit switch circuit (S1) is arranged between the power supply and the ground, pins 136, 131, 127, and 126 of the MCU control chip are respectively connected to the JTAG interface circuit, the input end of the MCU filter capacitor circuit is connected to the power supply, and the output end is grounded, and the MCU filter capacitor is used to filter out the AC component in the MCU power rectification circuit to make the output DC smoother.

[0034] like Figure 3 As shown, in one embodiment of the present invention, the video acquisition circuit includes a first image sensor chip, a second image sensor chip, a video conversion circuit, and a video crystal oscillator circuit. The input end of the first image sensor chip is connected to a power supply via a pull-up resistor and a pull-up capacitor, and the output end is connected to the second image sensor chip; the input end of the second image sensor chip is connected to a power supply via a pull-up resistor, and the output end is connected to ground via a resistor and a capacitor, and the conversion end is connected to the video conversion circuit. The video conversion circuit includes a video conversion chip and a video connection interface. The input end of the video conversion chip is connected to a power supply via an inductor, and the output end is connected to the input end of the video connection interface. The output end of the video connection interface is grounded. The signal end of the video conversion chip is connected to the video crystal oscillator circuit. The input end of the video crystal oscillator circuit is connected to a power supply, and the output end is grounded via a resistor.

[0035] It should be noted that, in this embodiment, the video acquisition circuit includes a first image sensor chip, a second image sensor chip, a video conversion circuit, and a video crystal oscillator circuit. The input end of the first image sensor chip is connected to the power supply through a pull-up resistor and a pull-up capacitor, and the output end is connected to the second image sensor chip; the input end of the second image sensor chip is connected to the power supply through a pull-up resistor, and the output end is connected to the ground through a resistor and a capacitor, and the conversion end is connected to the video conversion circuit. The video conversion circuit includes a video conversion chip and a video connection interface. The input end of the video conversion chip is connected to the power supply through an inductor, and the output end is connected to the input end of the video connection interface. The output end of the video connection interface is grounded. The signal end of the video conversion chip is connected to the video crystal oscillator circuit. The input end of the video crystal oscillator circuit is connected to the power supply, and the output end is grounded through a resistor. The camera used in the video acquisition module is also mainly used in the automotive field. At the same time, through a high-speed decoding chip, high-speed video acquisition and recording can be achieved.

[0036] like Figure 4As shown, in one embodiment of the present invention, the video and sound processing circuit includes a circuit converter chip, an analog-to-digital converter chip, an audio power amplifier chip, and an audio connection interface. The input end of the circuit converter chip is connected to the power supply via a pull-up resistor, the output end is connected to the analog-to-digital converter chip, the protection end is grounded via a capacitor, and the control end is connected to the MCU control chip. The input end of the analog-to-digital converter chip is connected to the power supply via a pull-up resistor, the output end is connected to the audio power amplifier chip, and the protection end is grounded via a capacitor. The input end of the audio power amplifier chip is connected to the power supply via a pull-up resistor, the output end is connected to the audio connection interface, the protection end is grounded via a voltage regulator tube and a filter capacitor, and the control end is connected to the MCU control chip.

[0037] It should be noted that, in this embodiment, pins 3, 4, and 8 of the circuit converter are respectively connected to the power supply via a pull-up resistor, pins 2 and 7 are respectively grounded via a capacitor, the first leads of pins 5 and 6 are connected to the power supply via a pull-up resistor, and the second leads are connected to pins 4 and 3 of the analog-to-digital converter chip, pins 1 and 2 of the analog-to-digital converter chip are respectively grounded via a resistor, pin 5 is grounded, the first lead of pin 6 is connected to the power supply, the second lead is grounded via a capacitor, the first lead of pin 7 is grounded via a capacitor, the second lead is connected to pin 7 of the power amplifier chip, and pin 8 is connected to pin 11 of the power amplifier chip; the audio connection interface includes an interface J3 and an interface J4, the first lead of pin 33 of the audio power amplifier chip is connected to the power supply, and the second lead is grounded via a capacitor, the pins 2, 3, 5, and 6 of the audio power amplifier chip are respectively connected to pins 1, 2, and 3 of the interface J3 via capacitors, and pins 16 and 20 are respectively connected to pins 1, 2, and 3 of the interface J3 via capacitors. The inductor is connected to pins 4 and 3 of the interface J4, and pins 14 and 15 are connected to the power supply. The capacitors C430-C443 are set between the power supply and the ground, and the voltage regulator tubes D50-D53 are set between the power supply and the ground. The system uses the circuit converter chip to power the analog-to-digital converter and transmit the analog signal to it. The analog-to-digital converter converts the analog signal into a digital signal and transmits it to the circuit conversion chip. The system uses an extremely high-frequency circuit conversion chip to amplify the audio signal and adopts an asynchronous modulation method. When the audio signal cycle changes, the high-frequency carrier signal remains unchanged. Therefore, when the audio frequency is relatively low, the number of carriers is still high, which is very beneficial for suppressing high-frequency carriers and reducing distortion. The frequency conversion band of the carrier is based on the audio signal frequency, so there is no mutual interference problem with the fundamental wave, thereby realizing the audio sound effect amplifier and completing the collection of the original sound during video collection through the video acquisition circuit.

[0038] like Figure 5As shown, in one embodiment of the present invention, the data interaction circuit 3 includes a 485 communication circuit and a GPS positioning circuit, the 485 communication circuit includes a 485 communication chip and a 485 connection interface, the input end of the 485 communication chip is connected to the power supply, the protection end is grounded through a voltage regulator tube, the output end is connected to the 485 connection interface, and the control end is connected to the MCU control chip.

[0039] It should be noted that, in this embodiment, pin 1 of the 485 communication chip is connected to the MCU control chip via a resistor, pins 2, 3, and 4 are connected to the MCU control chip, pin 8 is connected to the power supply, pin 5 is grounded, the first lead of pin 6 is connected to the power supply via a resistor, the second lead is grounded via a voltage regulator D10, the third lead is connected to the 485 connection interface, the first lead of pin 7 is grounded via a voltage regulator D8, and the second lead is connected to the 485 connection interface. The voltage regulator D9 is arranged between pins 6 and 7 of the 485 communication chip. The 485 communication chip outputs a twisted pair signal by connecting to the 485 connection interface. A voltage regulator is arranged on the twisted pair to ensure that the transmission of the 485 communication signal is more stable. At the same time, the 485 communication signal can be used for high-speed data transmission over short distances.

[0040] like Figure 6 As shown, in one embodiment of the present invention, the GPS positioning circuit includes a voltage regulator circuit, a first data card chip, a second data card chip, a data card interface, a serial communication chip, a GPS chip, and a triode circuit. The input end of the first data card chip is connected to a power supply, the output end is connected to the second data card chip, and the protection end is connected to the voltage regulator circuit; the input end of the serial communication chip is connected to a power supply, the signal end is connected to the second data card chip via a resistor and a capacitor, the output end is connected to the data card interface, and the protection end is connected to the voltage regulator circuit; the input end of the GPS chip is connected to a power supply via an inductor, the output end is connected to a positioning antenna, and the control end is connected to the MCU control chip; the input end of the second data card chip is connected to a power supply, the output end is connected to a positioning antenna, the control end is connected to the MCU control chip, and the adjustment end is connected to the triode circuit.

[0041] It should be noted that, in the present embodiment, the GPS positioning circuit adopts the GPS positioning chip for data positioning, and completes the transmission of the positioning signal by connecting the serial communication chip. At the same time, a voltage regulator circuit is set on the front stage of the first data card chip, the second data card chip, the serial communication chip, and the GPS chip to reduce the voltage pulse interference in the signal transmission. Correspondingly, a transistor circuit is set on the second data card chip, the collector of the transistor circuit is connected to the pin 1 of the second data card chip, the emitter is grounded, and the base is connected to the MCU control chip. A transistor is set between the MCU control chip and the second data card chip to amplify the signal to be transmitted. At the same time, positioning antennas are set on the second data card chip and the GPS chip, which are mainly used for vehicle positioning. At the same time, a better network environment is provided for the data transmission of the system, which facilitates the real-time reporting of positioning data.

[0042] like Figure 7 As shown, in one embodiment of the present invention, the power management circuit includes a power management chip, an isolation tube circuit, an optocoupler circuit, a transformer circuit, and a USB interface circuit. The input end of the power management chip is connected to the base of the transistor, the emitter of the transistor is grounded via a resistor and a light-emitting diode, and the collector is connected to the MCU control chip. The first output end of the power management chip is connected to the optocoupler circuit, the input end of the optocoupler circuit is connected to the power supply, the output end is grounded, and the control end is connected to the MCU control chip. The second output end of the power management chip is connected to the input end of the USB interface circuit, and the output end of the USB interface circuit is connected to the transformer circuit. The protection end of the power management chip is connected to the isolation tube circuit, and the control end is connected to the MCU control chip.

[0043] It should be noted that, in this embodiment, the power management chip is connected to the MCU control chip, and the corresponding instruction execution is completed according to the power management instruction issued by the MCU control chip. The output end of the power management chip is connected to the optocoupler circuit and the USB interface circuit, and the voltage transformation and voltage stabilization operation can be completed through the connection of the transformer circuit through the USB interface circuit. The function of the optocoupler circuit is to effectively isolate the electrical input and output circuits, and the signal can be transmitted in the form of light; it has a good anti-interference effect. At the same time, the isolation tube circuit is connected to the protection end of the power management chip (the isolation tube consists of pull-up resistors R49-R56 and pull-down capacitors C52-C59). Through the indirect connection between the isolation tube and the optocoupler circuit, the isolation effect of the power supply is better. At the same time, the collector of the transistor is connected to the MCU control chip, and the emitter is grounded through a resistor and a light-emitting diode. The corresponding light display can be completed according to different instructions issued by the MCU control chip.

[0044] like Figure 8As shown, in one embodiment of the present invention, the inverter drive circuit includes an inverter isolation chip, an inverter MOS tube circuit, an inverter inductor circuit, an inverter sensor chip, and an inverter op amp circuit. The input end of the inverter isolation chip is connected to a power supply, the output end is grounded through a capacitor, and the control end is connected to the MCU control chip. The inverter MOS tube circuit includes a first MOS tube, a second MOS tube, and a third MOS tube. The drain of the first MOS tube is connected to the power supply, the gate is connected to the MCU control chip, and the source is connected to the source of the second MOS tube. The gate of the second MOS tube is connected to the MCU control chip, the source is connected to the inverter sensor chip, the drain is connected to the source of the third MOS tube, the gate of the third MOS tube is connected to the MCU control chip, and the drain is grounded. The input end of the inverter sensor chip is connected to the input end of the inverter inductor circuit, the output end of the inverter inductor circuit is grounded, and the control end is connected to the MCU control chip. The output end of the inverter sensor chip is connected to the inverter op amp circuit, the input end of the inverter op amp circuit is connected to the power supply, and the control end is connected to the MCU control chip.

[0045] It should be noted that, in this embodiment, pins 1, 2, and 3 of the inverter sensor chip are connected to the source of the first MOS tube, pins 4, 5, and 6 are connected to pin 1 of the inductor L24 of the inverter inductor circuit, the first lead of pin 2 of the inductor L24 is grounded via a resistor and a capacitor, the second lead is connected to pin 1 of the inductor L25, the first lead of pin 2 of the inductor L25 is connected to the power supply, and the second lead is connected to the MCU control chip; pin 7 of the inverter sensor chip is connected to the power supply, pin 8 is grounded, capacitors C337 and C338 are arranged between the power supply and the ground, and pin 10 is connected to the MCU control chip. The MCU control chip, pin 9 is connected to pin 3 of the inverter operational amplifier chip via a resistor, pin 3 of the inverter operational amplifier chip is grounded via a resistor, pin 2 is connected to pin 1 of the inverter operational amplifier chip via a resistor and a capacitor respectively, pin 4 of the inverter operational amplifier chip is connected to the power supply, capacitor C335 is arranged between the power supply and the ground, pin 1 of the inverter sensor chip is connected to the MCU control chip via a resistor, the inverter drive circuit is used for power output, the battery of the power management circuit is inverter driven for output, and power control of current and voltage sampling is performed through the MOS tube circuit.

[0046] like Fig. 9 As shown, in one embodiment of the present invention, the isolation driving circuit includes an isolation optocoupler and an isolation MOS tube circuit, the input end of the isolation optocoupler is connected to the power supply, the output end is connected to the MCU control chip, the control end is connected to the gate of the isolation MOS tube circuit via a resistor, the drain of the isolation MOS tube is connected to the MCU control chip, the source is grounded, and the voltage regulator is arranged between the power supply and the ground.

[0047] It should be noted that, in this embodiment, the first lead of pin 1 of the isolation optocoupler is connected to the power supply via a resistor, the second lead is connected to the MCU control chip via a resistor and a light-emitting diode, pin 2 is connected to the MCU control chip, the first lead of pin 3 is connected to the gate of the isolation MOS tube via a resistor, the second lead is grounded via a light-emitting diode, and pin 4 is connected to the power supply. The isolation drive circuit mainly amplifies the PWM wave of the MCU weak signal through the isolation optocoupler and the isolation MOS tube circuit, and then outputs a strong signal control instruction.

[0048] like Fig.10 As shown, in one embodiment of the present invention, the radar driving circuit includes a radar driving chip, a radar operational amplifier circuit, a transformer circuit, and a speaker circuit. The input end of the radar driving chip is connected to a power supply through a voltage regulator, the control end is connected to the MCU control chip, and the output end is connected to the input end of the transformer circuit. The first output end of the transformer circuit is connected to the input end of the speaker circuit, and the output end of the speaker circuit is grounded. The second output end of the transformer circuit is connected to the radar operational amplifier circuit. The radar operational amplifier circuit includes a first radar operational amplifier chip, a second radar operational amplifier chip, a first radar triode, and a second radar triode. The input end of the first radar operational amplifier chip is connected to a power supply, the output end is connected to the second radar operational amplifier chip, the control end is connected to the collector of the first radar triode, the emitter of the first radar triode is grounded, and the base is connected to the transformer circuit. The input end of the second radar operational amplifier chip is connected to a power supply, the output end is connected to the base of the second radar triode, the emitter of the second radar triode is grounded, and the collector is connected to the MCU control chip.

[0049] It should be noted that, in this embodiment, the radar driving circuit adopts an automotive-grade radar driving chip, which drives the emission of ultrasonic waves and performs the collection function of ultrasonic reception through a speaker circuit. The output end performs voltage conversion through a transformer circuit, and the receiving end is processed by a filtering and gain amplification circuit composed of a radar operational amplifier circuit, and then the signal is given to the MCU control chip, which can achieve higher-precision recognition.

[0050] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A new energy vehicle central control system, characterized in that: include: An MCU control circuit (1), a data acquisition circuit (2), a data interaction circuit (3), a power management circuit and a drive circuit, wherein the MCU control circuit (1) comprises an MCU control chip and an MCU peripheral circuit, the data acquisition circuit (2) comprises a video acquisition circuit and a video and sound effect processing circuit, the data interaction circuit (3) can adopt a variety of methods to perform data interaction with peripherals, the power management circuit is connected to the MCU control chip and is used to receive a power management instruction issued by the MCU control chip, and the drive circuit comprises an inverter drive circuit, an isolation drive circuit and a radar drive circuit; The video acquisition circuit includes a first image sensor chip, a second image sensor chip, a video conversion circuit, and a video crystal oscillator circuit. The input end of the first image sensor chip is connected to a power supply via a pull-up resistor and a pull-up capacitor, and the output end is connected to the second image sensor chip; the input end of the second image sensor chip is connected to a power supply via a pull-up resistor, and the output end is connected to ground via a resistor and a capacitor, and the conversion end is connected to the video conversion circuit. The video conversion circuit includes a video conversion chip and a video connection interface. The input end of the video conversion chip is connected to a power supply via an inductor, and the output end is connected to the input end of the video connection interface. The output end of the video connection interface is grounded. The signal end of the video conversion chip is connected to the video crystal oscillator circuit. The input end of the video crystal oscillator circuit is connected to a power supply, and the output end is grounded via a resistor. The video and sound effect processing circuit comprises a circuit converter chip, an analog-to-digital converter chip, an audio power amplifier chip, and an audio connection interface. The input end of the circuit converter chip is connected to a power supply via a pull-up resistor, the output end is connected to the analog-to-digital converter chip, the protection end is grounded via a capacitor, and the control end is connected to the MCU control chip. The input end of the analog-to-digital converter chip is connected to a power supply via a pull-up resistor, the output end is connected to the audio power amplifier chip, and the protection end is grounded via a capacitor. The input end of the audio power amplifier chip is connected to a power supply via a pull-up resistor, the output end is connected to the audio connection interface, the protection end is grounded via a voltage regulator tube and a filter capacitor, and the control end is connected to the MCU control chip. Pins 3, 4, and 8 of the circuit converter are connected to the power supply via pull-up resistors, respectively, pins 2 and 7 are grounded via capacitors, first leads of pins 5 and 6 are connected to the power supply via pull-up resistors, and second leads are connected to pins 4 and 3 of the analog-to-digital converter chip, pins 1 and 2 of the analog-to-digital converter chip are grounded via resistors, pin 5 is grounded, the first lead of pin 6 is connected to the power supply, the second lead is grounded via a capacitor, the first lead of pin 7 is grounded via a capacitor, the second lead is connected to pin 7 of the power amplifier chip, and pin 8 is connected to pin 11 of the power amplifier chip; the audio connection interface includes interface J3 and interface J4, the first lead of pin 33 of the audio power amplifier chip is connected to the power supply, the second lead is grounded via a capacitor, pins 2, 3, 5, and 6 of the audio power amplifier chip are connected to pins 1, 2, and 3 of the interface J3 via capacitors, and pins 16 and 20 are connected to the interface via inductors. Pins 4 and 3, and pins 14 and 15 of J4 are connected to the power supply, capacitors C430-C443 are set between the power supply and the ground, and voltage regulator tubes D50-D53 are set between the power supply and the ground. The system uses the circuit converter chip to power the analog-to-digital converter and transmit analog signals to it. The analog-to-digital converter converts the analog signal into a digital signal and transmits it to the circuit conversion chip. The system uses an extremely high-frequency circuit conversion chip to amplify the audio signal and adopts an asynchronous modulation method. When the audio signal cycle changes, the high-frequency carrier signal remains unchanged. Therefore, when the audio frequency is relatively low, the number of carriers is still high, which is very beneficial for suppressing high-frequency carriers and reducing distortion. The frequency conversion band of the carrier is based on the audio signal frequency, so there is no mutual interference with the fundamental wave, thereby realizing the audio sound amplifier, and completing the acquisition of the original sound during video acquisition through the video acquisition circuit; The inverter drive circuit includes an inverter isolation chip, an inverter MOS tube circuit, an inverter inductor circuit, an inverter sensor chip, and an inverter operational amplifier circuit. The input end of the inverter isolation chip is connected to a power supply, the output end is grounded via a capacitor, and the control end is connected to the MCU control chip. The inverter MOS tube circuit includes a first MOS tube, a second MOS tube, and a third MOS tube. The drain of the first MOS tube is connected to the power supply, the gate is connected to the MCU control chip, and the source is connected to the source of the second MOS tube. The gate of the second MOS tube is connected to the MCU control chip, the source is connected to the inverter sensor chip, the drain is connected to the source of the third MOS tube, the gate of the third MOS tube is connected to the MCU control chip, and the drain is grounded. The input end of the inverter sensor chip is connected to the input end of the inverter inductor circuit, the output end of the inverter inductor circuit is grounded, and the control end is connected to the MCU control chip. The output end of the inverter sensor chip is connected to the inverter operational amplifier circuit. The input end of the inverter operational amplifier circuit is connected to the power supply, and the control end is connected to the MCU control chip.

2. A new energy vehicle central control system according to claim 1, characterized in that: The MCU peripheral circuit includes an MCU filter capacitor circuit, a JTAG interface circuit, an MCU crystal oscillator circuit, and an MCU limit switch circuit. The input end of the MCU control chip is connected to a power supply, the output end is connected to the JTAG interface circuit, the protection end is connected to the MCU filter capacitor circuit, and the control end is connected to the MCU limit switch circuit. The input end of the JTAG interface circuit is connected to a power supply via a resistor and a capacitor, and the output end is grounded.

3. A new energy vehicle central control system according to claim 1, characterized in that: The data interaction circuit (3) comprises a 485 communication circuit and a GPS positioning circuit. The 485 communication circuit comprises a 485 communication chip and a 485 connection interface. The input end of the 485 communication chip is connected to a power supply, the protection end is grounded via a voltage regulator tube, the output end is connected to the 485 connection interface, and the control end is connected to the MCU control chip.

4. A new energy vehicle central control system according to claim 3, characterized in that: The GPS positioning circuit includes a voltage regulator circuit, a first data card chip, a second data card chip, a data card interface, a serial communication chip, a GPS chip, and a triode circuit. The input end of the first data card chip is connected to a power supply, the output end is connected to the second data card chip, and the protection end is connected to the voltage regulator circuit; the input end of the serial communication chip is connected to a power supply, the signal end is connected to the second data card chip via a resistor and a capacitor, the output end is connected to the data card interface, and the protection end is connected to the voltage regulator circuit; the input end of the GPS chip is connected to a power supply via an inductor, the output end is connected to a positioning antenna, and the control end is connected to the MCU control chip; the input end of the second data card chip is connected to a power supply, the output end is connected to a positioning antenna, the control end is connected to the MCU control chip, and the regulation end is connected to the triode circuit.

5. A new energy vehicle central control system according to claim 1, characterized in that: The power management circuit includes a power management chip, an isolation tube circuit, an optocoupler circuit, a transformer circuit, and a USB interface circuit. The input end of the power management chip is connected to the base of the transistor, the emitter of the transistor is grounded via a resistor and a light-emitting diode, and the collector is connected to the MCU control chip. The first output end of the power management chip is connected to the optocoupler circuit, the input end of the optocoupler circuit is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip. The second output end of the power management chip is connected to the input end of the USB interface circuit, the output end of the USB interface circuit is connected to the transformer circuit, the protection end of the power management chip is connected to the isolation tube circuit, and the control end is connected to the MCU control chip.

6. A new energy vehicle central control system according to claim 1, characterized in that: The isolation driving circuit includes an isolation optocoupler and an isolation MOS tube circuit, the input end of the isolation optocoupler is connected to the power supply, the output end is connected to the MCU control chip, the control end is connected to the gate of the isolation MOS tube circuit via a resistor, the drain of the isolation MOS tube is connected to the MCU control chip, the source is grounded, and the voltage regulator is arranged between the power supply and the ground.

7. A new energy vehicle central control system according to claim 1, characterized in that: The radar driving circuit includes a radar driving chip, a radar operational amplifier circuit, a transformer circuit, and a speaker circuit. The input end of the radar driving chip is connected to a power supply through a voltage regulator tube, the control end is connected to the MCU control chip, and the output end is connected to the input end of the transformer circuit. The first output end of the transformer circuit is connected to the input end of the speaker circuit, and the output end of the speaker circuit is grounded. The second output end of the transformer circuit is connected to the radar operational amplifier circuit. The radar operational amplifier circuit includes a first radar operational amplifier chip, a second radar operational amplifier chip, a first radar triode, and a second radar triode. The input end of the first radar operational amplifier chip is connected to a power supply, the output end is connected to the second radar operational amplifier chip, the control end is connected to the collector of the first radar triode, the emitter of the first radar triode is grounded, and the base is connected to the transformer circuit. The input end of the second radar operational amplifier chip is connected to a power supply, the output end is connected to the base of the second radar triode, the emitter of the second radar triode is grounded, and the collector is connected to the MCU control chip.

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