CN218343655U - Electric motor car intelligence system based on bluetooth communication - Google Patents
Electric motor car intelligence system based on bluetooth communication Download PDFInfo
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- CN218343655U CN218343655U CN202222804380.7U CN202222804380U CN218343655U CN 218343655 U CN218343655 U CN 218343655U CN 202222804380 U CN202222804380 U CN 202222804380U CN 218343655 U CN218343655 U CN 218343655U
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Abstract
The utility model discloses an electric vehicle intelligent contact system based on Bluetooth communication, which relates to the technical field of electric vehicles and comprises a Bluetooth controller as a host, a Bluetooth instrument and a Bluetooth charger connected with the Bluetooth controller through a Bluetooth network, wherein the Bluetooth instrument and the Bluetooth charger are used as slave machines, and data transmission is coordinated by the host machine; the Bluetooth charger is connected with the battery through the charging switch circuit, and the charging switch circuit is used for being controlled to form a passage when the Bluetooth charger is connected with the host computer in a Bluetooth mode; the Bluetooth instrument is used for converting the handle analog signals into corresponding PWM signals through the handle signal processing circuit and sending the PWM signals to the Bluetooth controller, and the Bluetooth controller is used for realizing the control of the rotating speed and the torque of the motor based on the received PWM signals. The system adopts wireless transmission to replace wired transmission, and solves the problem that wiring of a system wire harness is complex.
Description
Technical Field
The utility model belongs to the technical field of the electric motor car technique and specifically relates to an electric motor car intelligence antithetical couplet system based on bluetooth communication.
Background
At present, the communication structure of the electric two-wheel vehicle system mainly takes one-wire communication as a main part, 485 communication as an auxiliary part, and a small number of high-end vehicle types adopt CAN communication. The communication modes have the problem of communication interference, particularly the 485 communication has the worst interference resistance, the packet loss rate of data is higher than that of the other two communication modes, and the master-slave communication mode is adopted, so that the bus utilization rate is low. In the three communication modes, the cost of one-wire communication is the lowest, but only point-to-point communication can be carried out, the resource utilization rate is low, and the communication speed is slow; the CAN communication speed is high, a multi-host communication mechanism is adopted, the bus utilization rate is high, and the cost is highest. The problem of wiring exists in all three communication modes, and more communication nodes and more wire harnesses are more troublesome to route, so that a series of problems are caused in an electric vehicle system.
SUMMERY OF THE UTILITY MODEL
The invention provides an electric vehicle intelligent connection system based on Bluetooth communication aiming at the problems and the technical requirements. And wireless transmission is adopted to replace wired transmission, so that the problem of complex wiring of a system wire harness is solved.
The technical scheme of the utility model as follows:
an intelligent contact system of an electric vehicle based on Bluetooth communication comprises a Bluetooth controller as a host, a Bluetooth instrument and a Bluetooth charger, wherein the Bluetooth instrument and the Bluetooth charger are connected with the Bluetooth controller through a Bluetooth network and are used as slave machines, and data transmission is coordinated by the host machine; the Bluetooth charger is connected with the battery through the charging switch circuit, and the charging switch circuit is used for being controlled to form a passage when the Bluetooth charger is connected with the host computer in a Bluetooth mode; the DC converter is also connected with a Bluetooth instrument and used for providing voltage required by the instrument; the Bluetooth instrument is used for converting the conversion analog signals into corresponding PWM signals through the conversion signal processing circuit and sending the PWM signals to the Bluetooth controller, and the Bluetooth controller is used for controlling the rotating speed and the torque of the motor based on the received PWM signals.
The further technical scheme is that the handle-turning signal processing circuit is arranged in the Bluetooth instrument and comprises a handle-turning signal sampling circuit, an MCU and a handle-turning signal conversion circuit which are sequentially connected; the handle transferring signal sampling circuit is used for converting the collected handle transferring analog signals from an original level range to a set level range and connecting an analog signal collecting port of the MCU, and the handle transferring signal conversion circuit is used for receiving corresponding PWM signals converted by the MCU and converting signal amplitude values to set amplitude values and transmitting the set amplitude values to the Bluetooth controller.
The further technical scheme is that the handle-turning signal sampling circuit comprises three resistors, two capacitors and two diodes, wherein: the first end of the first resistor is used as the input of the handle transferring signal sampling circuit, a handle transferring signal line is connected, a handle transferring analog signal is received, the first end of the first resistor is further connected with the first end of the first capacitor, the second end of the first resistor is respectively connected with the first ends of the second resistor and the third resistor, the second end of the second resistor is used as the output of the handle transferring signal sampling circuit and is connected with an analog signal acquisition port of the MCU, the first end of the second capacitor, the anode of the first diode and the cathode of the second diode are connected with the second end of the second resistor, the second ends of the first capacitor, the second capacitor and the third resistor and the anode of the second diode are grounded, and the cathode of the first diode is connected with the first power supply.
The further technical scheme is that the handle transferring signal conversion circuit comprises four resistors, two capacitors and a triode, wherein: the first end of the fourth resistor is used as the input of the handle signal conversion circuit, the MCU is connected, the corresponding PWM signal converted by the MCU is received, the second end of the fourth resistor is respectively connected with the first end of the fifth resistor, the first end of the third capacitor and the gate pole of the triode, the collector electrode of the triode is respectively connected with the first ends of the sixth resistor and the seventh resistor, the second end of the sixth resistor is connected with the second power supply, the second end of the seventh resistor is used as the output of the handle signal conversion circuit and is connected with the Bluetooth controller, the first end of the fourth capacitor is connected with the second end of the seventh resistor, and the third capacitor, the second ends of the fourth capacitor and the fifth resistor and the emitter electrode of the triode are all grounded.
The system further comprises a Bluetooth lamp set control box connected with the Bluetooth controller through a Bluetooth network, the Bluetooth instrument is further connected with the Bluetooth lamp set control box and used for collecting switching value signals of the front and rear lamps and transmitting the switching value signals to the host, and the Bluetooth lamp set control box serves as a slave and is used for achieving wireless control of the front and rear lamps according to lamp control instructions of the host.
The system further comprises a mobile phone connected with the Bluetooth controller through a Bluetooth network, wherein after the Bluetooth connection is established, the mobile phone is used as a master machine, the Bluetooth controller is used as a slave machine, and the master machine is used for remotely managing each slave machine.
The system further comprises a Bluetooth handle connected with the Bluetooth controller through a Bluetooth network, and the Bluetooth handle is used as a slave to realize Bluetooth unlocking.
The utility model has the beneficial technical effects that:
in the intelligent connection system for the electric vehicle, the Bluetooth controller serves as a host, the other nodes serve as slaves, and data transmission among the nodes is coordinated through the Bluetooth network, so that wiring harness switching nodes are reduced, the wiring harness of the whole vehicle is optimized, various problems caused by poor contact and aging of the wiring harness are reduced, the anti-interference capability of a system bus is improved, and the communication stability and reliability of the system are improved; through the Bluetooth corresponding relation between the Bluetooth charger and the host, one-to-one charging management of the electric vehicle battery is realized, and the service life of the battery is prolonged; through will changeing signal line lug connection to carry out signal conversion apart from nearest bluetooth instrument, compare with the traditional whole vehicle control unit that will change signal line connection to the distance far away, the signal interference killing feature reinforcing of this system adds the sign indicating number for user trip safety, has promoted user trip safety and has experienced.
Drawings
FIG. 1 is a block diagram of an electric vehicle intelligent contact system based on Bluetooth communication provided by the application.
Fig. 2 is a circuit diagram of a handle bar signal processing circuit provided in the present application.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the application provides an electric vehicle intelligent connection system based on bluetooth communication, which comprises a bluetooth controller, a bluetooth instrument, a bluetooth charger, a bluetooth lamp bank control box, a mobile phone, a bluetooth handle, a DC converter, a battery, a charging switch circuit and a motor, wherein the bluetooth instrument, the bluetooth charger, the bluetooth lamp bank control box, the mobile phone and the bluetooth handle are connected with the bluetooth controller through a bluetooth network. The Bluetooth controller is a whole network center and serves as a Bluetooth host, the Bluetooth instrument, the Bluetooth charger, the Bluetooth lamp set control box and the Bluetooth handle serve as slaves, and the host is used for coordinating data transmission among the slaves. The DC converter is also respectively connected with the Bluetooth instrument and the Bluetooth lamp group control box and used for providing voltage required by the equipment. Optionally, the communication protocol can adopt the original 485 communication protocol of the whole vehicle, and the intelligent level of the whole vehicle is further improved by combining Bluetooth communication.
The battery passes through empty opening and connects bluetooth controller, and the bluetooth charger passes through charging switch circuit and connects the battery, and charging switch circuit is used for the controlled route that forms when bluetooth charger and host computer are established the bluetooth and are connected, realizes the charger and electric vehicle batteries's one-to-one management of charging, and the principle is: after the Bluetooth charger is powered on, if the Bluetooth charger is in a Bluetooth corresponding relation with the host, connection can be established, and after a charging plug of the Bluetooth charger is inserted into a charging port on the electric vehicle, the host controls the charging switch circuit to open a charging loop so that the battery enters a charging mode. In this application embodiment, utilize bluetooth to realize that the charger binds with putting in order one-to-one of car battery, prevent that the user from changing the charger at will, thereby lead to charger and battery to mismatch and damage the battery or influence battery life. The establishment of bluetooth connection between the slave and the master belongs to the conventional mature technology in the field, and will not be described herein.
The Bluetooth instrument is used for converting the handle analog signals into corresponding PWM signals through the handle signal processing circuit and sending the PWM signals to the Bluetooth controller, and the Bluetooth controller is used for realizing the control of the rotating speed and the torque of the motor based on the received PWM signals. The handle-turning signal processing circuit is arranged inside the Bluetooth instrument, and comprises a handle-turning signal sampling circuit, an MCU and a handle-turning signal conversion circuit which are sequentially connected as shown in figure 2. Specifically, the method comprises the following steps:
the handle signal sampling circuit comprises three resistors, two capacitors and two diodes, wherein: the first end of the first resistor R1 is used as the input of a handle transferring signal sampling circuit, a handle transferring signal line is connected, and a handle transferring analog signal is received, the first end of the first resistor R1 is also connected with the first end of the first capacitor C1, the second end of the first resistor R1 is respectively connected with the first ends of the second resistor R2 and the third resistor R3, the second end of the second resistor R2 is used as the output of the handle transferring signal sampling circuit and is connected with an analog signal acquisition port of the MCU, the first end of the second capacitor C2, the anode of the first diode D1 and the cathode of the second diode D2 are all connected with the second end of the second resistor R2, the second ends of the first capacitor C1, the second capacitor C2 and the third resistor R3 and the anode of the second diode D2 are grounded, the cathode of the first diode D1 is connected with a first power supply, and the first power supply is set to be +3.3V.
The handle signal conversion circuit comprises four resistors, two capacitors and a triode, wherein: a first end of a fourth resistor R4 is used as an input of the handle signal conversion circuit, and is connected to the MCU to receive a corresponding PWM signal converted by the MCU, a second end of the fourth resistor R4 is connected to a first end of a fifth resistor R5, a first end of a third capacitor C3, and a gate of a transistor Q1, a collector of the transistor Q1 is connected to first ends of a sixth resistor R6 and a seventh resistor R7, a second end of the sixth resistor R6 is connected to a second power supply, a second end of the seventh resistor R7 is used as an output of the handle signal conversion circuit and is connected to the bluetooth controller, a first end of the fourth capacitor C4 is connected to a second end of the seventh resistor R7, second ends of the third capacitor C3, the fourth capacitor C4, the fifth resistor R5, and an emitter of the transistor Q1 are all grounded, wherein the second power supply is set to +12V.
The working principle of the handle transferring signal processing circuit is as follows: the change signal sampling circuit converts the collected change analog signal from the original 0-5V level range into the set 0-3.3V level range, and is connected to the analog signal collecting port of the MCU, the change signal conversion circuit receives the corresponding PWM signal with the frequency of 1K converted by the MCU, converts the signal amplitude into the set amplitude and transmits the set amplitude to the Bluetooth controller, namely the amplitude of the PWM signal is converted from 3.3V to 12V and is output to the Bluetooth controller. The MCU converts the analog signal into a corresponding PWM signal, which is a conventional mature technology in the art, for example, the conversion relationship between the handle voltage and the PWM duty cycle is: the corresponding duty ratio is 0 when the handle voltage is less than 1.1V, 80% when the handle voltage is more than 3.5V, and 0-80% when the handle voltage is between 1.1V and 3.5V.
In the embodiment, the signal line of the steering handle is directly connected to the Bluetooth instrument closest to the Bluetooth instrument for signal conversion, so that the short-distance signal transmission is adopted, and the interference of the analog signal transmission is small. In the prior art, the signal line of the transfer handle is usually connected to the vehicle control unit which is far away, and belongs to long-distance signal transmission, and other signals which are connected to the controller together with the transfer handle are mutually interfered, so that the interference is much larger after the analog signal of the transfer handle is connected to the controller. Therefore, the implementation mode of the application improves the anti-interference capacity of the handle transferring signal, so that the reliability of important signal transmission is enhanced, and the trip safety of a user is ensured.
The Bluetooth instrument is further connected with a Bluetooth lamp set control box and used for collecting switching value signals of front and rear lamps and transmitting the signals to the host, and the Bluetooth lamp set control box is used as a slave and used for realizing wireless control of the front and rear lamps according to a lamp control command of the host. In the prior art, the traditional car lamp switching mode adopts a mechanical switch to directly cut off 12V power supply, the wiring of the mode is complicated, a plurality of plugs are needed for transfer and butt joint, and various problems caused by poor contact are increased. The system adopts a control mode of Bluetooth and an electronic switch to solve the problems, so that the wiring harness of the whole vehicle is greatly simplified, and the failure rate and the false back rate of the whole vehicle caused by the wiring harness problem are reduced.
Optionally, other external switching values (including brake, P-gear, module switch, single-support switch, T-power switch, range-extending mode switch, lamp control switch signal, and the like) except the rotating handle are directly connected to the bluetooth instrument, and the bluetooth instrument converts the external switching values into a communication instruction and sends the communication instruction to the bluetooth lamp bank control box and the bluetooth controller host so as to realize function regulation control of the vehicle lamp and the motor.
After the Bluetooth connection is established between the mobile phone and the Bluetooth controller, the mobile phone serves as a host, the Bluetooth controller serves as a slave, and the host is used for remotely managing each slave, including slave information acquisition, whole vehicle real-time state inquiry, parameter setting, program remote upgrading and the like, so that the use experience of a user is improved, and the user can operate a system conveniently.
The bluetooth handle realizes the bluetooth unblock, and the principle does: when the Bluetooth handle enters a set distance range from the electric vehicle, the electric vehicle is automatically unlocked by the Bluetooth controller, otherwise, the electric vehicle is automatically locked when the Bluetooth handle leaves the set distance range.
It should be noted that the bluetooth controller, bluetooth instrument, bluetooth charger, bluetooth banks control box, bluetooth handle, charging switch circuit etc. that this application provided are present market module, do not do the detailed description here to its inside constitution.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiment. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.
Claims (7)
1. An intelligent connection system of an electric vehicle based on Bluetooth communication is characterized by comprising a Bluetooth controller as a host, a Bluetooth instrument and a Bluetooth charger, wherein the Bluetooth instrument and the Bluetooth charger are connected with the Bluetooth controller through a Bluetooth network and are used as slaves, and data transmission is coordinated by the host; the Bluetooth charger is connected with the battery through the charging switch circuit, and the charging switch circuit is used for being controlled to form a path when the Bluetooth charger is connected with the host computer in a Bluetooth mode; the DC converter is also connected with the Bluetooth instrument and used for providing voltage required by the instrument; the Bluetooth instrument is used for converting the handle analog signals into corresponding PWM signals through the handle signal processing circuit and sending the PWM signals to the Bluetooth controller, and the Bluetooth controller is used for controlling the rotating speed and the torque of the motor based on the received PWM signals.
2. The electric vehicle intelligent connection system based on the Bluetooth communication is characterized in that the handle transferring signal processing circuit is arranged in the Bluetooth instrument and comprises a handle transferring signal sampling circuit, an MCU and a handle transferring signal conversion circuit which are sequentially connected; the transfer signal sampling circuit is used for converting the collected transfer analog signals from an original level range to a set level range and connecting the transfer analog signals to an analog signal collection port of the MCU, and the transfer signal conversion circuit is used for receiving corresponding PWM signals converted by the MCU, converting signal amplitude values to set amplitude values and transmitting the set amplitude values to the Bluetooth controller.
3. The bluetooth communication-based intelligent connection system for electric vehicles according to claim 2, wherein the handle signal sampling circuit comprises three resistors, two capacitors and two diodes, wherein: the first end of first resistance is as the input of commentaries on classics signal sampling circuit, connects commentaries on classics signal line, receipt change an analog signal, the first end of first electric capacity is still connected to the first end of first resistance, and the first end of second resistance and third resistance is connected respectively to the second end of first resistance, and the second end of second resistance is as the output of commentaries on classics signal sampling circuit, connects MCU's analog signal acquisition port, the first end of second electric capacity, first diode positive pole and second diode negative pole all with the second end of second resistance is connected, the second end and the second diode positive pole ground connection of first electric capacity, second electric capacity and third resistance, and first power is connected to first diode negative pole.
4. The bluetooth communication-based intelligent connection system for electric vehicles as claimed in claim 2, wherein the handle signal conversion circuit comprises four resistors, two capacitors and a triode, wherein: the first end of the fourth resistor is used as the input of the handle signal conversion circuit, is connected with the MCU and receives the corresponding PWM signal converted by the MCU, the second end of the fourth resistor is respectively connected with the first end of the fifth resistor, the first end of the third capacitor and the gate pole of the triode, the collector electrode of the triode is respectively connected with the first ends of the sixth resistor and the seventh resistor, the second end of the sixth resistor is connected with the second power supply, the second end of the seventh resistor is used as the output of the handle signal conversion circuit and is connected with the Bluetooth controller, the first end of the fourth capacitor is connected with the second end of the seventh resistor, and the second ends of the third capacitor, the fourth capacitor and the fifth resistor and the emitter electrode of the triode are all grounded.
5. The electric vehicle intelligent connection system based on the Bluetooth communication is characterized by further comprising a Bluetooth lamp set control box connected with the Bluetooth controller through a Bluetooth network, the Bluetooth instrument is further connected with the Bluetooth lamp set control box and used for collecting switching value signals of front and rear vehicle lamps and transmitting the switching value signals to a host, and the Bluetooth lamp set control box serves as a slave and is used for achieving wireless control of the front and rear vehicle lamps according to a host lamp control command.
6. The intelligent connection system for electric vehicles based on Bluetooth communication as claimed in claim 1, further comprising a mobile phone connected with the Bluetooth controller via a Bluetooth network, wherein after the Bluetooth connection is established, the mobile phone is used as a master, the Bluetooth controller is used as a slave, and the master is used for remote management of each slave.
7. The Bluetooth communication-based intelligent connection system for electric vehicles as claimed in claim 1, further comprising a Bluetooth handle connected with the Bluetooth controller via a Bluetooth network, wherein the Bluetooth handle is used as a slave to unlock Bluetooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222804380.7U CN218343655U (en) | 2022-10-24 | 2022-10-24 | Electric motor car intelligence system based on bluetooth communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222804380.7U CN218343655U (en) | 2022-10-24 | 2022-10-24 | Electric motor car intelligence system based on bluetooth communication |
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| CN218343655U true CN218343655U (en) | 2023-01-20 |
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| CN202222804380.7U Active CN218343655U (en) | 2022-10-24 | 2022-10-24 | Electric motor car intelligence system based on bluetooth communication |
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Effective date of registration: 20231107 Address after: No. 2999, Xinglong Avenue, Weixinghu Street, Yongchuan District, Chongqing 402160 Patentee after: Chongqing Yadi Technology Co.,Ltd. Address before: 214000 Dongsheng Road, Dacheng Industrial Park, anzhen street, Xishan District, Wuxi City, Jiangsu Province Patentee before: YADEA TECHNIC GROUP Co.,Ltd. |
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