A vehicle-mounted intelligent control system for new energy vehicles

Abstract

The present invention relates to the field of intelligent control technology, and provides an on-board intelligent control system for a new energy vehicle, comprising: an MCU control circuit, an inverter output circuit, a control output circuit, an in-vehicle environment monitoring circuit, and a communication circuit. The inverter output circuit is connected to the MCU control circuit and is used to receive an inverter output instruction issued by the MCU control circuit. The control output circuit is connected to the MCU control circuit and is used to receive a control output instruction issued by the MCU control circuit. The in-vehicle environment monitoring circuit comprises a human body detection circuit, a temperature detection circuit, and an in-vehicle environment detection circuit. The communication circuit is connected to the MCU control circuit and is used for data interaction between the MCU control chip and peripheral devices. The present invention can perform intelligent detection and analysis on vehicle internal information, detect various vehicle data in a timely manner, and analyze and judge conventional driving conditions.

Description

Technical Field

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

[0002] The current vehicle control system mainly focuses on the intelligent experience of the driving area. The adjustment of the vehicle control lacks safe interaction under specific circumstances. At the same time, it is also impossible to detect, analyze and intelligently adjust the in-vehicle environment. There is also little analysis of the driver's situation. Compared with the traditional vehicle control system, this solution can detect and analyze the driver's driving situation and remind the driver of fatigue driving. When the driver is in poor physical condition, the route can be planned and the alarm can be issued according to the communication circuit. In addition, the system is equipped with various sensors to detect the temperature, humidity and harmful gases in the car to determine whether the driver is driving under the influence of alcohol. The strain gauge installed on the driver's seat can detect whether the vehicle is overloaded and analyze and judge unconventional driving conditions. The charging of the car also adopts the inverter output circuit for high-power and efficient charging mode. Summary of the invention

[0003] The problem solved by the present invention is how to provide a vehicle-mounted intelligent control system that can intelligently detect and analyze vehicle internal information, timely detect various vehicle data, and analyze and judge conventional driving conditions.

[0004] To solve the above problems, the present invention provides an on-board intelligent control system for a new energy vehicle, comprising: an MCU control circuit, an inverter output circuit, a control output circuit, an in-vehicle environment monitoring circuit, and a communication circuit. The inverter output circuit is connected to the MCU control circuit for receiving an inverter output instruction issued by the MCU control circuit. The control output circuit is connected to the MCU control circuit for receiving a control output instruction issued by the MCU control circuit. The in-vehicle environment monitoring circuit comprises a human body detection circuit, a temperature detection circuit, and an in-vehicle environment detection circuit. The communication circuit is connected to the MCU control circuit for data interaction between the MCU control circuit and peripheral devices.

[0005] Furthermore, the MCU control circuit includes an MCU control chip, a UART interface circuit, a crystal oscillator circuit, a filter capacitor circuit, and a limit switch circuit. The input end of the MCU control chip is connected to a power supply, the output end is connected to the UART interface circuit, the signal end is respectively connected to two crystal oscillator circuits, the protection end is connected to the filter capacitor circuit, and the control end is connected to the limit switch circuit.

[0006] Furthermore, the inverter output circuit includes a current sensor circuit, an analog-to-digital converter circuit, a power interface circuit, an inverter op amp circuit, a voltage stabilizing circuit, a first MOS tube, and a second MOS tube. The input end of the current sensor circuit is connected to the power interface circuit via an inductor, the first control end is connected to the MCU control chip, the second control end is connected to the drain of the first MOS tube via a voltage stabilizing tube, the source of the first MOS tube is connected to the drain of the second MOS tube, the gate is connected to the MCU control chip, the source of the second MOS tube is grounded, the gate is connected to the MCU control chip, the output end is connected to the inverter op amp circuit, the input end of the inverter op amp circuit is connected to the analog-to-digital converter circuit, the input end of the analog-to-digital converter circuit is connected to the power supply, the output end is grounded, and the control end is connected to the MCU control chip. The voltage stabilizing circuit adopts a multi-stage voltage stabilizing circuit to power various circuits of the vehicle-mounted intelligent control system.

[0007] Furthermore, the control output circuit includes a gate driver circuit, a gate driver circuit, and a bus buffer circuit, characterized in that the gate driver circuit includes a gate driver chip, the input end of the gate driver chip is connected to the power supply, the output end is grounded via a capacitor, and the control end is connected to the MCU control chip; the gate driver circuit includes a gate driver chip, the input end of the gate driver chip is connected to the power supply, the output end is grounded via a voltage regulator tube and a capacitor, and the control end is connected to the MCU control chip; the input end of the bus buffer circuit is connected to the power supply, and the output end is connected to the MCU control chip.

[0008] Furthermore, the human body detection circuit includes a voice recognition circuit, a steering wheel pressure detection circuit and a seat cushion sensing circuit. The voice recognition circuit includes an audio conversion chip, an audio operational amplifier circuit, an audio adjustment crystal oscillator, and a first transistor. The input end of the audio operational amplifier circuit is connected to a power supply, and the output end is connected to the audio conversion chip. The input end of the audio conversion chip is connected to a power supply, and the output end is grounded via a capacitor. The control end is connected to the MCU control chip, the signal end is connected to the audio adjustment crystal oscillator, the adjustment end is connected to the base of the first transistor, the collector of the first transistor is connected to the power supply via a light-emitting diode, and the emitter is grounded.

[0009] Furthermore, the steering wheel pressure detection circuit includes a first pressure detection op amp chip, a second pressure detection op amp chip, a third pressure detection op amp chip, a fourth pressure detection op amp chip, a fifth pressure detection op amp chip, a sixth pressure detection op amp chip, an instrument amplifier chip, and a pressure detection interface. The input end of the first pressure detection op amp chip is connected to a power supply, the output end is connected to the pressure detection interface, and the control end is connected to the instrument amplifier chip; the input end of the second pressure detection op amp chip is connected to a power supply, the output end is connected to the pressure detection interface, the control end is connected to the instrument amplifier chip, and the signal end is connected to the third pressure detection op amp chip. The output end of the third pressure detection op amp chip is connected to the input end of the fourth pressure detection op amp chip. The input end of the fourth pressure detection op amp chip is connected to the pressure detection interface. The input end of the instrument amplifier chip is connected to a power supply, and the output end is connected to the input end of the fifth pressure detection op amp chip. The output end of the fifth pressure detection op amp chip is connected to the input end of the sixth pressure detection op amp chip, and the output end of the sixth pressure detection op amp chip is connected to the MCU control chip.

[0010] Furthermore, the seat cushion sensing circuit includes two seat cushion sensing op amp chips, a rectifier bridge circuit, and a seat cushion sensing chip. The input end of the seat cushion sensing chip is connected to the power supply, the control end is connected to the MCU control chip, and the output end is respectively connected to the first seat cushion sensing op amp chip and the second seat cushion sensing op amp chip. The output end of the first seat cushion sensing op amp chip is connected to the second seat cushion sensing op amp chip, the rectifier end is connected to the input end of the rectifier bridge circuit, the output end of the second seat cushion sensing op amp chip is grounded, and the rectifier end is connected to the output end of the rectifier bridge circuit.

[0011] Furthermore, the temperature detection circuit includes a temperature detection chip, a first temperature amplification circuit, and a second temperature amplification circuit. The input end of the first temperature amplification circuit is connected to a power supply, the protection end is connected to a voltage-stabilizing resistor, and the output end is connected to the temperature detection chip. The input end of the temperature detection chip is connected to a power supply, and the output end is connected to the input end of the second temperature amplification circuit. The output end of the second temperature amplification circuit is connected to the MCU control chip; the in-vehicle environment detection circuit includes an in-vehicle gas detection circuit and an in-vehicle audio and video circuit. The in-vehicle gas detection circuit includes a harmful gas detection circuit and an alcohol detection circuit. The harmful gas detection circuit includes a gas sensor chip, a gas detection MOS tube circuit, and a gas signal amplification circuit. The input end of the body sensor chip is connected to the power supply, the control end is connected to the drain of the gas detection MOS tube circuit, the source of the gas detection MOS tube circuit is grounded, the gate is connected to the MCU control chip, the output end of the gas sensor chip is connected to the input end of the gas signal amplification circuit, the output end of the gas signal amplification circuit is connected to the MCU control chip, the alcohol detection circuit includes an alcohol detection sensor chip and an alcohol detection triode circuit, the input end of the alcohol detection sensor chip is connected to the power supply, the control end is connected to the emitter of the alcohol detection triode circuit, the collector of the alcohol detection triode circuit is grounded, the base is connected to the MCU control chip, and the output end of the alcohol detection sensor chip is connected to the MCU control chip.

[0012] Furthermore, the in-vehicle audio and video circuit includes an in-vehicle display circuit and an in-vehicle audio playback circuit. The in-vehicle display circuit includes a display screen and a load control circuit. The input end of the display screen is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip. The load control circuit includes a transistor load, a relay switch and a relay interface circuit. The input end of the transistor load is connected to a power supply, the output end is connected to the input end of the relay switch, and the output end of the relay switch is connected to the relay interface circuit. The in-vehicle audio playback circuit includes an audio conversion chip and an audio crystal oscillator circuit. The input end of the audio conversion chip is connected to a power supply, the output end is connected to the voice recognition circuit, the control end is connected to the MCU control chip, and the signal end is connected to the audio crystal oscillator circuit.

[0013] Furthermore, the data interaction circuit includes a communication conversion chip, a communication connection interface, a data card connection interface, and a USB communication interface. The input end of the communication conversion chip is connected to a power supply, the output end is connected to the communication connection interface, the data end is connected to the data card connection interface, the communication end is connected to the USB communication interface, and the control end is connected to the MCU control chip. The input end of the USB communication interface is connected to a power supply, the output end is connected to a drain of a third MOS tube, the gate of the third MOS tube is grounded, and the drain is connected to the power supply, and the control end of the USB communication interface is connected to the MCU control chip.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention mainly performs intelligent detection and analysis of driving conditions. For example, the human body detection circuit can detect the driver's voice recognition, steering wheel pressure and seat cushion pressure sensing, and compare them with the data parameters under normal circumstances to judge the driver's status. In addition, various sensors are mounted on the board, including temperature detection circuit, in-vehicle gas detection circuit, and in-vehicle audio and video circuit, which can detect the temperature and humidity and harmful gas conditions in the car and whether the driver is driving under the influence of alcohol. In addition, the strain gauge detection installed on the driver's seat and the coordinated work of the in-vehicle audio and video circuit can be used to detect whether the vehicle is overloaded. In terms of charging, the inverter output circuit with frequency modulation technology is used to perform high-power and efficient charging mode. The system is also equipped with a communication circuit, which can perform wireless or wired transmission of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the principle structure of the overall structure of Embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic diagram of the principle structure of the MCU control circuit of Example 2 of the present invention;

[0018] Figure 3 Schematic diagram of the principle structure of the inverter output circuit of Embodiment 3 of the present invention;

[0019] Figure 4 Schematic diagram of the principle structure of the control output circuit of embodiment 4 of the present invention;

[0020] Figure 5 Schematic diagram of the principle structure of the speech recognition circuit of Embodiment 5 of the present invention;

[0021] Figure 6 This is a schematic diagram of the principle structure of a steering wheel pressure sensing detection circuit according to Embodiment 6 of the present invention;

[0022] Figure 7 This is a schematic diagram of the principle structure of a seat cushion sensing circuit according to Embodiment 7 of the present invention;

[0023] Figure 8 Schematic diagram of the principle structure of the temperature detection circuit of Example 8 of the present invention;

[0024] Fig. 9 Schematic diagram of the principle structure of a harmful gas detection circuit and an alcohol detection circuit according to Embodiment 8 of the present invention;

[0025] Fig.10 This is a schematic diagram of the principle structure of the in-vehicle display circuit according to Embodiment 9 of the present invention;

[0026] Fig.11Schematic diagram of the principle structure of the in-car audio playback circuit according to Embodiment 9 of the present invention;

[0027] Fig.12 This is a schematic diagram of the principle structure of the communication circuit of embodiment 10 of the present invention.

[0028] Description of reference numerals:

[0029] 1-MCU control circuit; 2-inverter output circuit; 3-control output circuit; 4-in-vehicle environment monitoring circuit; 5-data interaction circuit. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figure 1 As shown, the present invention provides an on-board intelligent control system for a new energy vehicle, comprising: an MCU control circuit 1, an inverter output circuit 2, a control output circuit 3, an in-vehicle environment monitoring circuit 4, and a communication circuit. The inverter output circuit 2 is connected to the MCU control circuit 1 for receiving an inverter output instruction issued by the MCU control circuit 1. The control output circuit 3 is connected to the MCU control circuit 1 for receiving a control output instruction issued by the MCU control circuit 1. The in-vehicle environment monitoring circuit 4 comprises a human body detection circuit, a temperature detection circuit, and an in-vehicle environment detection circuit. The communication circuit is connected to the MCU control circuit 1 for data interaction between the MCU control circuit 1 and peripheral devices.

[0034] like Figure 2As shown, in one embodiment of the present invention, the MCU control circuit 1 includes an MCU control chip, a UART interface circuit, a crystal oscillator circuit, a filter capacitor circuit, and a limit switch circuit. The input end of the MCU control chip is connected to a power supply, the output end is connected to the UART interface circuit, the signal end is respectively connected to two crystal oscillator circuits, the protection end is connected to the filter capacitor circuit, and the control end is connected to the limit switch circuit.

[0035] It should be noted that, in this embodiment, the MCU control chip serves as the central brain of the entire system, and a variety of connection interfaces are designed on it to control various series of functional modules. The crystal oscillator circuit can measure the time for the MCU control chip 1, the limit switch can close the circuit instruction function, and the filter capacitor circuit makes the system work more stable.

[0036] like Figure 3 As shown, in one embodiment of the present invention, the inverter output circuit 2 includes a current sensor circuit, an analog-to-digital converter circuit, a power interface circuit, an inverter op amp circuit, a voltage stabilizing circuit, a first MOS tube, and a second MOS tube. The input end of the current sensor circuit is connected to the power interface circuit via an inductor, the first control end is connected to the MCU control chip, the second control end is connected to the drain of the first MOS tube via a voltage stabilizing tube, the source of the first MOS tube is connected to the drain of the second MOS tube, the gate is connected to the MCU control chip, the source of the second MOS tube is grounded, the gate is connected to the MCU control chip, the output end is connected to the inverter op amp circuit, the input end of the inverter op amp circuit is connected to the analog-to-digital converter circuit, the input end of the analog-to-digital converter circuit is connected to the power supply, the output end is grounded, and the control end is connected to the MCU control chip. The voltage stabilizing circuit adopts a multi-stage voltage stabilizing circuit to power various circuits of the vehicle-mounted intelligent control system.

[0037] It should be noted that, in this embodiment, the circuit inputs three-phase AC power through the power interface circuit, and the current passes through the current sensor circuit and the analog-to-digital converter circuit in sequence to achieve AC-DC conversion and frequency modulation inversion. At the same time, in the entire rectification conversion and inversion process, current sensors are designed for each part of the circuit to monitor the current and voltage of each node, thereby further improving the circuit output power and increasing the battery charging speed while achieving frequency stability.

[0038] like Figure 4As shown, in one embodiment of the present invention, the control output circuit 3 includes a gate driver circuit, a gate driver circuit, and a bus buffer circuit, characterized in that the gate driver circuit includes a gate driver chip, the input end of the gate driver chip is connected to the power supply, the output end is grounded via a capacitor, and the control end is connected to the MCU control chip, the gate driver circuit includes a gate driver chip, the input end of the gate driver chip is connected to the power supply, the output end is grounded via a voltage regulator tube and a capacitor, and the control end is connected to the MCU control chip, and the input end of the bus buffer circuit is connected to the power supply, and the output end is connected to the MCU control chip.

[0039] It should be noted that in this embodiment, the control output circuit 3 realizes the protection of the high-power output circuit through multiple circuit drive isolation and buffer circuits such as the driver circuit, the gate driver circuit, the bus buffer circuit, etc., and performs necessary drive isolation on the DC conversion and analog-to-digital conversion processes during the inverter output process, thereby further protecting the safety of the weak current motherboard.

[0040] like Figure 5 As shown, in one embodiment of the present invention, the human body detection circuit includes a voice recognition circuit, a steering wheel pressure detection circuit and a seat cushion sensing circuit, the voice recognition circuit includes an audio conversion chip, an audio operational amplifier circuit, an audio adjustment crystal oscillator, and a first transistor, the input end of the audio operational amplifier circuit is connected to a power supply, and the output end is connected to the audio conversion chip, the input end of the audio conversion chip is connected to a power supply, the output end is grounded via a capacitor, the control end is connected to the MCU control chip, the signal end is connected to the audio adjustment crystal oscillator, the adjustment end is connected to the base of the first transistor, the collector of the first transistor is connected to the power supply via a light-emitting diode, and the emitter is grounded.

[0041] It should be noted that, in this embodiment, the voice recognition circuit realizes the collection and amplification of audio signals through the corresponding audio operational amplifier circuit, and realizes the conversion of audio information through the audio conversion chip. The audio adjustment crystal oscillator can determine the time of the audio information to ensure the efficiency of the audio information conversion. At the same time, the audio adjustment crystal oscillator can realize the remote timing operation of the voice recognition command.

[0042] like Figure 6As shown, in one embodiment of the present invention, the steering wheel pressure detection circuit includes a first pressure detection op amp chip, a second pressure detection op amp chip, a third pressure detection op amp chip, a fourth pressure detection op amp chip, a fifth pressure detection op amp chip, a sixth pressure detection op amp chip, an instrument amplifier chip, and a pressure detection interface. The input end of the first pressure detection op amp chip is connected to a power supply, the output end is connected to the pressure detection interface, and the control end is connected to the instrument amplifier chip; the input end of the second pressure detection op amp chip is connected to a power supply, and the output end is connected to the pressure detection interface. The control end is connected to the instrument amplifier chip, the signal end is connected to the third pressure detection op amp chip, the output end of the third pressure detection op amp chip is connected to the input end of the fourth pressure detection op amp chip, the input end of the fourth pressure detection op amp chip is connected to the pressure detection interface, the input end of the instrument amplifier chip is connected to the power supply, the output end is connected to the input end of the fifth pressure detection op amp chip, the output end of the fifth pressure detection op amp chip is connected to the input end of the sixth pressure detection op amp chip, and the output end of the sixth pressure detection op amp chip is connected to the MCU control chip.

[0043] It should be noted that, in this embodiment, a multi-channel pressure detection operational amplifier chip is integrated in the steering wheel pressure detection circuit, and the pressure information can be collected through the multi-channel pressure detection operational amplifier chip. The pressure information can be amplified by connecting to the instrument amplifier chip, and the pressure detection interface is designed at multiple angles of the steering wheel. The pressure information of the driver's palm on the steering wheel can be recorded in time, and the data can be transmitted to the MCU control chip for verification with the usual data to provide preliminary feedback on the driver's physical condition.

[0044] like Figure 7 As shown, in one embodiment of the present invention, the seat cushion sensing circuit includes two seat cushion sensing op amp chips, a rectifier bridge circuit, and a seat cushion sensing chip. The input end of the seat cushion sensing chip is connected to a power supply, the control end is connected to the MCU control chip, and the output end is respectively connected to a first seat cushion sensing op amp chip and a second seat cushion sensing op amp chip. The output end of the first seat cushion sensing op amp chip is connected to the second seat cushion sensing op amp chip, and the rectifier end is connected to the input end of the rectifier bridge circuit. The output end of the second seat cushion sensing op amp chip is grounded, and the rectifier end is connected to the output end of the rectifier bridge circuit.

[0045] It should be noted that, in the present embodiment, the cushion sensing operational amplifier chip, the rectifier bridge circuit, and the cushion sensing chip, the cushion sensing chip detects seat pressure through the strain gauge installed on the driver's seat, and realizes the current conversion of the pressure information through the cushion sensing operational amplifier chip and the rectifier bridge circuit, and proofreads the detected information through the MCU control chip, confirms whether it is overloaded according to the gravity sensing data of the strain gauge, and makes analysis and judgment on unconventional driving conditions. When the data is abnormal, an alarm can be sounded through the voice conversion circuit.

[0046] like Figure 8 As shown, in one embodiment of the present invention, the temperature detection circuit includes a temperature detection chip, a first temperature amplification circuit, and a second temperature amplification circuit. The input end of the first temperature amplification circuit is connected to a power supply, the protection end is connected to a voltage-stabilizing resistor, and the output end is connected to the temperature detection chip. The input end of the temperature detection chip is connected to a power supply, and the output end is connected to the input end of the second temperature amplification circuit. The output end of the second temperature amplification circuit is connected to the MCU control chip; the in-vehicle environment detection circuit includes an in-vehicle gas detection circuit and an in-vehicle audio and video circuit. Fig. 9 As shown, the in-vehicle gas detection circuit includes a harmful gas detection circuit and an alcohol detection circuit. The harmful gas detection circuit includes a gas sensor chip, a gas detection MOS tube circuit, and a gas signal amplification circuit. The input end of the gas sensor chip is connected to a power supply, the control end is connected to the drain of the gas detection MOS tube circuit, the source of the gas detection MOS tube circuit is grounded, and the gate is connected to the MCU control chip. The output end of the gas sensor chip is connected to the input end of the gas signal amplification circuit, and the output end of the gas signal amplification circuit is connected to the MCU control chip. The alcohol detection circuit includes an alcohol detection sensor chip and an alcohol detection transistor circuit. The input end of the alcohol detection sensor chip is connected to a power supply, the control end is connected to the emitter of the alcohol detection transistor circuit, the collector of the alcohol detection transistor circuit is grounded, the base is connected to the MCU control chip, and the output end of the alcohol detection sensor chip is connected to the MCU control chip.

[0047] It should be noted that, in this embodiment, the temperature detection circuit can detect the temperature change in the car through the temperature detection chip, and the gas detection circuit in the car can detect harmful gases or alcohol gases in the car and issue an alarm through the voice recognition circuit.

[0048] like Fig.10 As shown, in one embodiment of the present invention, the in-vehicle audio and video circuit includes an in-vehicle display circuit and an in-vehicle audio playback circuit, the in-vehicle display circuit includes a display screen and a load control circuit, the input end of the display screen is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip, the load control circuit includes a transistor load, a relay switch and a relay interface circuit, the input end of the transistor load is connected to a power supply, the output end is connected to the input end of the relay switch, and the output end of the relay switch is connected to the relay interface circuit, as shown in FIG. Fig.11 As shown, the in-car audio playback circuit includes an audio conversion chip and an audio crystal oscillator circuit. The input end of the audio conversion chip is connected to a power supply, the output end is connected to the voice recognition circuit, the control end is connected to the MCU control chip, and the signal end is connected to the audio crystal oscillator circuit.

[0049] It should be noted that, in this embodiment, the display screen can display navigation information, and cooperate with the camera to monitor and take pictures inside the car to determine whether there is overloading or other factors that are not conducive to driving safety in the car. The display screen can also display the debugging instructions of the system. The load control circuit controls the circuit load through transistor load and relay switch to realize the function selection of the control system. The audio conversion chip can be connected to the voice recognition circuit, and output the corresponding audio after completing the audio conversion through the display screen.

[0050] like Fig.12 As shown, in one embodiment of the present invention, the data interaction circuit 5 includes a communication conversion chip, a communication connection interface, a data card connection interface, and a USB communication interface. The input end of the communication conversion chip is connected to a power supply, the output end is connected to the communication connection interface, the data end is connected to the data card connection interface, the communication end is connected to the USB communication interface, and the control end is connected to the MCU control chip. The input end of the USB communication interface is connected to a power supply, and the output end is connected to the drain of a third MOS tube. The gate of the third MOS tube is grounded, and the drain is connected to the power supply. The control end of the USB communication interface is connected to the MCU control chip.

[0051] It should be noted that, in this embodiment, the system performs data communication with the peripheral device through the data interaction circuit 5, and the communication conversion chip realizes wireless transmission or wired transmission of data communication by connecting the communication connection interface and the USB communication interface.

[0052] 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 vehicle-mounted intelligent control system for a new energy vehicle, characterized in that: include: An MCU control circuit (1), an inverter output circuit (2), a control output circuit (3), an in-vehicle environment monitoring circuit (4), and a data interaction circuit (5), wherein the inverter output circuit (2) is connected to the MCU control circuit (1) and is used to receive an inverter output instruction issued by the MCU control circuit (1); the control output circuit (3) is connected to the MCU control circuit (1) and is used to receive a control output instruction issued by the MCU control circuit (1); the in-vehicle environment monitoring circuit (4) comprises a human body detection circuit, a temperature detection circuit, and an in-vehicle environment detection circuit; the data interaction circuit (5) is connected to the MCU control circuit (1) and is used to (1) Data interaction with peripheral devices; the MCU control circuit (1) includes an MCU control chip; the human body detection circuit includes a voice recognition circuit, a steering wheel pressure detection circuit and a seat cushion sensing circuit; the voice recognition circuit includes an audio conversion chip, an audio operational amplifier circuit, an audio adjustment crystal oscillator, and a first transistor; the input end of the audio operational amplifier circuit is connected to a power supply, and the output end is connected to the audio conversion chip; the input end of the audio conversion chip is connected to a power supply, the output end is grounded via a capacitor, the control end is connected to the MCU control chip, the signal end is connected to the audio adjustment crystal oscillator, the adjustment end is connected to the base of the first transistor, the collector of the first transistor is connected to the power supply via a light-emitting diode, and the emitter is grounded; The steering wheel pressure detection circuit includes a first pressure detection operational amplifier chip, a second pressure detection operational amplifier chip, a third pressure detection operational amplifier chip, a fourth pressure detection operational amplifier chip, a fifth pressure detection operational amplifier chip, a sixth pressure detection operational amplifier chip, an instrument amplifier chip, and a pressure detection interface. The power input terminal of the first pressure detection operational amplifier chip is connected to the power supply, the same-direction input terminal is connected to the pressure detection interface, and the output terminal is connected to the negative input terminal of the instrument amplifier chip; the power input terminal of the second pressure detection operational amplifier chip is connected to the power supply, the same-direction input terminal is connected to the pressure detection interface, and the output terminal is connected to the positive input terminal of the instrument amplifier chip; at the same time, the output terminal of the first pressure detection operational amplifier chip is connected to one end of the first resistor. The first pressure sensing detection chip is connected to the first terminal, the other end of the first resistor is connected to the same-direction input terminal of the third pressure sensing detection op amp chip and one end of the second resistor, and the other end of the second resistor is connected to the output terminal of the second pressure sensing detection op amp chip; the output terminal of the third pressure sensing detection op amp chip is connected to the reverse input terminal of the fourth pressure sensing detection op amp chip, the output terminal of the fourth pressure sensing detection op amp chip is connected to the pressure sensing detection interface, the power input terminal of the instrument amplifier chip is connected to the power supply, and the output terminal is connected to the same-direction input terminal of the fifth pressure sensing detection op amp chip, the output terminal of the fifth pressure sensing detection op amp chip is connected to the same-direction input terminal of the sixth pressure sensing detection op amp chip, and the output terminal of the sixth pressure sensing detection op amp chip is connected to the MCU control chip.

2. The intelligent control system for new energy vehicles according to claim 1 is characterized in that: The MCU control circuit (1) further comprises a UART interface circuit, a crystal oscillator circuit, a filter capacitor circuit, and a limit switch circuit; the input end of the MCU control chip is connected to a power supply, the output end is connected to the UART interface circuit, the signal end is respectively connected to two crystal oscillator circuits, the protection end is connected to the filter capacitor circuit, and the control end is connected to the limit switch circuit.

3. The intelligent control system for new energy vehicles according to claim 1 is characterized in that: The inverter output circuit (2) comprises a current sensor circuit, an analog-to-digital converter circuit, an electric quantity interface circuit, an inverter operational amplifier circuit, a voltage stabilizing circuit, a first MOS tube, and a second MOS tube. The input end of the current sensor circuit is connected to the electric quantity interface circuit via an inductor, the first control end is connected to the MCU control chip, the second control end is connected to the drain of the first MOS tube via a voltage stabilizing tube, the source of the first MOS tube is connected to the drain of the second MOS tube, the gate is connected to the MCU control chip, the source of the second MOS tube is grounded, the gate is connected to the MCU control chip, the output end is connected to the inverter operational amplifier circuit, the input end of the inverter operational amplifier circuit is connected to the analog-to-digital converter circuit, the input end of the analog-to-digital converter circuit is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip. The voltage stabilizing circuit adopts a multi-stage voltage stabilizing circuit to supply power to various circuits of the vehicle-mounted intelligent control system.

4. The vehicle-mounted intelligent control system for new energy vehicles according to claim 1 is characterized in that: The control output circuit (3) comprises a gate driver circuit, a gate driver circuit, and a bus buffer circuit, and is characterized in that the gate driver circuit comprises a gate driver chip, the input end of the gate driver 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 gate driver circuit comprises a gate driver chip, the input end of the gate driver chip is connected to a power supply, the output end is grounded via a voltage regulator tube and a capacitor, and the control end is connected to the MCU control chip; the input end of the bus buffer circuit is connected to a power supply, and the output end is connected to the MCU control chip.

5. The vehicle-mounted intelligent control system for new energy vehicles according to claim 1 is characterized in that: The seat cushion sensing circuit includes two seat cushion sensing op amp chips, a rectifier bridge circuit, and a seat cushion sensing chip. The power input end of the seat cushion sensing chip is connected to the power supply, the control end is connected to the MCU control chip, the negative and positive signal input ends are respectively connected to the output ends of the first seat cushion sensing op amp chip and the second seat cushion sensing op amp chip, and the reverse input end of the first seat cushion sensing op amp chip is connected to the reverse input end of the second seat cushion sensing op amp chip; the rectifier bridge circuit includes a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, one end of the third resistor is connected to a 5V power supply and one end of the sixth resistor, the other end of the third resistor is connected to one end of the fourth resistor, and the other end of the third resistor is connected to the same-direction input end of the first seat cushion sensing op amp chip through the seventh resistor, the other end of the fourth resistor is connected to one end of the fifth resistor and is grounded, the other end of the fifth resistor is connected to the other end of the sixth resistor, and the other end of the fifth resistor is connected to the same-direction input end of the second seat cushion sensing op amp chip through the eighth resistor.

6. The vehicle-mounted intelligent control system for new energy vehicles according to claim 1 is characterized in that: The temperature detection circuit includes a temperature detection chip, a first temperature amplification circuit, and a second temperature amplification circuit. The input end of the first temperature amplification circuit is connected to a power supply, the protection end is connected to a voltage-stabilizing resistor, and the output end is connected to the temperature detection chip. The input end of the temperature detection chip is connected to a power supply, and the output end is connected to the input end of the second temperature amplification circuit. The output end of the second temperature amplification circuit is connected to the MCU control chip; the in-vehicle environment detection circuit includes an in-vehicle gas detection circuit and an in-vehicle audio and video circuit. The in-vehicle gas detection circuit includes a harmful gas detection circuit and an alcohol detection circuit. The harmful gas detection circuit includes a gas sensor chip, a gas detection MOS tube circuit, and a gas signal amplification circuit. The gas sensor The input end of the sensor chip is connected to the power supply, the control end is connected to the drain of the gas detection MOS tube circuit, the source of the gas detection MOS tube circuit is grounded, the gate is connected to the MCU control chip, the output end of the gas sensor chip is connected to the input end of the gas signal amplification circuit, the output end of the gas signal amplification circuit is connected to the MCU control chip, the alcohol detection circuit includes an alcohol detection sensor chip and an alcohol detection triode circuit, the input end of the alcohol detection sensor chip is connected to the power supply, the control end is connected to the emitter of the alcohol detection triode circuit, the collector of the alcohol detection triode circuit is grounded, the base is connected to the MCU control chip, and the output end of the alcohol detection sensor chip is connected to the MCU control chip.

7. The on-board intelligent control system for new energy vehicles according to claim 6 is characterized in that: The in-vehicle audio and video circuit includes an in-vehicle display circuit and an in-vehicle audio playback circuit. The in-vehicle display circuit includes a display screen and a load control circuit. The input end of the display screen is connected to a power supply, the output end is grounded, and the control end is connected to the MCU control chip. The load control circuit includes a transistor load, a relay switch and a relay interface circuit. The input end of the transistor load is connected to a power supply, the output end is connected to the input end of the relay switch, and the output end of the relay switch is connected to the relay interface circuit. The in-vehicle audio playback circuit includes an audio conversion chip and an audio crystal oscillator circuit. The input end of the audio conversion chip is connected to a power supply, the output end is connected to the voice recognition circuit, the control end is connected to the MCU control chip, and the signal end is connected to the audio crystal oscillator circuit.

8. The on-board intelligent control system for new energy vehicles according to claim 1 is characterized in that: The data interaction circuit (5) comprises a communication conversion chip, a communication connection interface, a data card connection interface, and a USB communication interface. The input end of the communication conversion chip is connected to a power supply, the output end is connected to the communication connection interface, the data end is connected to the data card connection interface, the communication end is connected to the USB communication interface, and the control end is connected to the MCU control chip. The input end of the USB communication interface is connected to a power supply, the output end is connected to a drain of a third MOS tube, the gate of the third MOS tube is grounded, and the drain is connected to a power supply. The control end of the USB communication interface is connected to the MCU control chip.

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