CN214355767U - Electric motor coach control system and electric motor coach - Google Patents
Electric motor coach control system and electric motor coach Download PDFInfo
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- CN214355767U CN214355767U CN202022895800.8U CN202022895800U CN214355767U CN 214355767 U CN214355767 U CN 214355767U CN 202022895800 U CN202022895800 U CN 202022895800U CN 214355767 U CN214355767 U CN 214355767U
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Abstract
The application provides [ electric ] motor coach control system and [ electric ] motor coach. The electric motor coach control system comprises a whole car controller, a speed signal processing module and a gear signal processing module, wherein the whole car controller is used for generating a speed signal and a gear signal; the instrument is communicated with the vehicle control unit and used for receiving the vehicle speed signal and the gear signal and generating a square wave signal according to the vehicle speed signal and the gear signal; and the low-speed reminder is electrically connected with the instrument and used for receiving the square wave signal and generating a prompt tone according to the square wave signal. The complexity of a vehicle CAN network is not increased, only the square wave signal is generated by the instrument according to the vehicle speed signal and the gear signal, and the low-speed reminder generates a prompt sound according to the square wave signal, so that the prompt of the vehicle in the low-speed running process is realized. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
Description
Technical Field
The application relates to the field of electric motor coach control, in particular to an electric motor coach control system and an electric motor coach.
Background
With the popularization of new energy passenger cars, electric drive becomes the mainstream of the current passenger car industry. The driving motor has the characteristics of low noise and small vibration, no roaring sound of an engine exists during operation, the motor is quite quiet, the sense of existence of the vehicle in a road running environment is reduced, the vehicle can rub against the shoulders of pedestrians accidentally or come to the front of the pedestrians suddenly, people are prevented suddenly, and certain potential safety hazards are brought. For this reason, the national standard GB7258-2017 "technical conditions for safety of operation of motor vehicles" 12.13.2 specifies: when the vehicle starts and the speed of the pure electric vehicle and the plug-in hybrid electric vehicle is lower than 20km/h, the pure electric vehicle and the plug-in hybrid electric vehicle can give out proper prompting sound to personnel outside the vehicle. At present, in order to meet the standard requirement, low-speed reminders are installed on electric motor coaches, when the speed of the motor coach is less than 20km/h, the low-speed reminders send out reminding sounds, the control methods of the low-speed reminders are various, most of the low-speed reminders are controlled by a CAN bus, the low-speed reminders are used as a node on a CAN network, receive control messages and send out preset sounds, the cost is high, and the complexity of the CAN network of the motor coach is increased.
SUMMERY OF THE UTILITY MODEL
The main aim at of this application provides an [ electric ] motor coach control system and [ electric ] motor coach to solve among the prior art the scheme cost that control low-speed reminiscences sent prompt message is higher and increased the problem of the complexity of vehicle CAN network.
In order to achieve the above object, according to one aspect of the present application, there is provided an electric motor coach control system including: the vehicle control unit is used for generating a vehicle speed signal and a gear signal; the instrument is communicated with the vehicle control unit and used for receiving the vehicle speed signal and the gear signal and generating a square wave signal according to the vehicle speed signal and the gear signal; and the low-speed reminder is electrically connected with the instrument and used for receiving the square wave signal and generating a prompt tone according to the square wave signal.
Further, the system also comprises a mute switch which is electrically connected with the instrument through a ground wire.
Further, the mute switch is a rocker switch.
Further, the system also comprises an instrument desk in the vehicle, and the mute switch and the instrument are installed on the instrument desk in the vehicle.
Further, the meter comprises a display screen, and when the mute switch is turned off, the display screen displays the information that the sound of the low-speed reminder is turned off.
Further, the low-speed reminder is electrically connected with the instrument through a single wire.
Further, the instrument further comprises a CAN processor and a logic processor, wherein the CAN processor is electrically connected with the logic processor, the CAN processor is used for receiving the vehicle speed signal and the gear signal, and the logic processor is used for generating the corresponding square wave signal according to the vehicle speed signal and the gear signal.
Further, under the condition that the vehicle speed signal is larger than the preset value, the logic processor does not output the square wave signal any more, and the low-speed reminder does not generate the prompt tone any more.
According to another aspect of the application, an electric motor coach is provided and comprises an electric motor coach control system, wherein the electric motor coach control system is any one of the electric motor coach control systems.
Further, [ electric ] motor coach still includes the frame, low-speed reminiscences installs the preceding terminal surface of frame.
By applying the technical scheme, the instrument is communicated with the vehicle control unit, the vehicle speed signal and the gear signal are received, the square wave signal is generated according to the vehicle speed signal and the gear signal, the low-speed reminder generates the prompt sound according to the received square wave signal, compared with the prior art that the low-speed reminder is set as a node on a CAN network, the low-speed reminder receives the control message and sends out the preset prompt sound, the scheme does not need to increase the complexity of the CAN network of the vehicle, only the square wave signal is generated according to the vehicle speed signal and the gear signal through the instrument, and the prompt sound is generated according to the square wave signal by the low-speed reminder, so that the prompt when the vehicle runs at low speed is realized. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic diagram of an electric motor coach control system according to an embodiment of the application.
Wherein the figures include the following reference numerals:
10. a vehicle control unit; 20. a meter; 21. a CAN processor; 22. a logical processor; 30. a low speed reminder; 40. a mute switch.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
For convenience of description, some terms or expressions referred to in the embodiments of the present application are explained below:
VCU: the Vehicle control unit is a central control unit of the new energy Vehicle, and is the core of the whole control system. The VCU collects the states of a motor and a battery, collects signals of an accelerator pedal, a brake pedal, an actuator and a sensor, and monitors the action of each part controller at the lower layer after making corresponding judgment according to the comprehensive analysis of the intention of a driver, and the VCU is responsible for the normal running, the brake energy feedback, the energy management of an engine and a power battery of the whole automobile, network management, fault diagnosis and processing, the vehicle state monitoring and the like of the automobile, thereby ensuring the normal and stable work of the whole automobile under the states of better dynamic property, higher economy and reliability.
As described in the background art, in the prior art, the scheme for controlling the low-speed reminder to send the prompt message is high in cost and increases the complexity of the vehicle CAN network, and in order to solve the problems that the scheme for controlling the low-speed reminder to send the prompt message is high in cost and increases the complexity of the vehicle CAN network, the application provides an electric motor coach control system and an electric motor coach.
In an exemplary embodiment of the present application, there is provided an electric motor coach control system, as shown in fig. 1, including:
the vehicle control unit 10 is used for generating a vehicle speed signal and a gear signal;
an instrument 20, in communication with the vehicle controller 10, for receiving the vehicle speed signal and the gear signal, and generating a square wave signal according to the vehicle speed signal and the gear signal;
and the low-speed reminder 30 is electrically connected with the meter 20 and is used for receiving the square wave signal and generating a prompt tone according to the square wave signal.
Specifically, the loudness and the tone of the prompt tone change with the change of the vehicle speed, so as to achieve a remarkable prompt effect.
Specifically, the meter receives a vehicle speed signal and a gear signal generated by the vehicle controller through the CAN bus, and the vehicle speed signal and the gear signal are shared information with the highest use frequency in a CAN bus message, so that the vehicle communication protocol cannot be adjusted due to the addition of a low-speed reminder; the instrument carries out logical operation aiming at the received vehicle speed signal and the gear signal to obtain a square wave signal, the instrument outputs square waves with different frequencies along with the change of the vehicle speed, and the low-speed reminder outputs different prompting loudness and tones to prompt pedestrians around the vehicle.
Specifically, the square wave signal is a periodic square wave signal that varies linearly with the vehicle speed. The instrument adjusts the frequency of the output square wave signal according to the magnitude of the vehicle speed. The vehicle speed signal CAN also be a hard-wire square wave pulse signal (namely the vehicle speed signal is obtained through a vehicle speed pulse hard wire), or a vehicle speed message sent by another controller is received through a CAN bus. Characteristics of the periodic square wave signal output by the meter: the high level is more than 12V, the low level is less than 2V, and the square wave frequency is more than 2 kHz. The square wave frequency variation relation with the vehicle speed is as follows: 0Hz corresponds to 0km/h, and 222Hz corresponds to 100km/h in a linear relationship. Logic definition of the meter output square wave: and outputting when the vehicle is in the D gear and the vehicle speed is less than 20 km/h. The low-speed reminder is responsible for receiving the square wave signal that the instrument sent to according to square wave frequency characteristic, send different suggestion loudness and tone, the sound that sends is less more the speed of a motor vehicle is big.
Specifically, the gear signal is read through the CAN bus, and the vehicle control unit generally sends out a gear information message. Of course, the gear signal may also be issued by another controller, such as a gearbox controller.
In the scheme, the instrument is communicated with the vehicle control unit, the vehicle speed signal and the gear signal are received, the square wave signal is generated according to the vehicle speed signal and the gear signal, the low-speed reminder generates the prompt tone according to the received square wave signal, compared with the prior art that the low-speed reminder is set as a node on a CAN network, the low-speed reminder receives the control message and sends out the preset prompt tone, the scheme does not need to increase the complexity of the CAN network of the vehicle, the square wave signal is generated only according to the vehicle speed signal and the gear signal through the instrument, and the prompt tone is generated according to the square wave signal by the low-speed reminder, so that the prompt when the vehicle runs at low speed is realized. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
In an embodiment of the present application, as shown in fig. 1, the system further includes a mute switch 40, the mute switch is electrically connected to the meter through a ground wire, the meter includes a display screen, and when the mute switch is turned off, the display screen displays information that the sound of the low-speed reminder is turned off. When the silence demand, through setting up the silence switch, realize closing the selectivity of low-speed reminiscences sound, show the promptness icon simultaneously on the instrument to warn the driver, low-speed reminiscences sound has been artificially closed, and can satisfy the scene demand of silence. For example, the low speed reminder may cause a certain noise when operating, may invite complaints from citizens in the morning and evening, and may require measures to implement the selective shutdown.
Specifically, when the mute switch is pressed and the low speed reminder sound is turned off, a text may be displayed on the meter to prompt the driver, for example, the following text "the low speed reminder sound is turned off" is displayed.
Specifically, when a mute requirement exists, the mute switch is pressed, and when the mute switch is pressed, the mute switch is connected with a ground wire and gives a corresponding pin of the instrument. The meter logic defines the pin as being effective to be grounded, and when the pin is effective, the meter stops outputting a control square wave signal to the low-speed reminder. In order to prompt a driver, when the mute switch is pressed down, the icon instrument displayed on the instrument does not output square wave signals any more, and the low-speed reminder does not give prompt tones any more. Of course, the mute switch may also be defined as active high.
In an embodiment of the present application, the mute switch is a rocker switch.
In an embodiment of the present application, the system further includes an in-vehicle instrument desk, and the mute switch and the instrument are mounted on the in-vehicle instrument desk.
In one embodiment of the present application, as shown in FIG. 1, the low speed reminder 30 is electrically connected to the meter 20 via a single wire. Compared with the CAN bus control method, the scheme only needs a single line to receive square wave signals, so that the cost is saved, the node of the low-speed reminder 30 does not need to be additionally arranged on the original CAN network of the vehicle, the original vehicle communication protocol does not need to be changed, and the CAN bus network architecture is simplified.
In an embodiment of the present application, as shown in fig. 1, the meter 20 further includes a CAN processor 21 and a logic processor 22, the CAN processor 21 is electrically connected to the logic processor 22, the CAN processor 21 is configured to receive the vehicle speed signal and the gear signal, and the logic processor 22 is configured to generate the corresponding square wave signal according to the vehicle speed signal and the gear signal.
In an embodiment of the application, when the vehicle speed signal is greater than a predetermined value, the logic processor does not output the square wave signal any more, and the low-speed reminder does not generate the warning sound any more. For example, when the vehicle speed is more than 20km/h, the low speed prompter does not emit a prompt tone. The low-speed reminder has the advantages that the low-speed reminder is mainly used for reminding passengers when the vehicle runs at low speed, safety of the passengers is guaranteed, when the vehicle runs normally or at high speed, the vehicle does not approach the passengers and does not have the intention of parking, and prompting is not needed.
A typical embodiment of the present application provides an electric motor coach including an electric motor coach control system, which is any one of the above electric motor coach control systems. The electric motor coach control system of the electric motor coach does not need to increase the complexity of a CAN network of the vehicle, only generates square wave signals according to vehicle speed signals and gear signals through the instrument, and generates prompt tones according to the square wave signals by the low-speed reminder, so that the prompt of the vehicle during low-speed running is realized. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
In an embodiment of the present application, the electric motor coach further includes a frame, and the low-speed reminder is installed on a front end surface of the frame. Certainly, the low-speed reminder can be installed near the front end face of the vehicle frame, and pedestrians outside the vehicle can hear the low-speed reminder when the low-speed reminder makes a sound.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) the electric motor coach control system does not need to increase the complexity of a CAN network of a vehicle, only generates square wave signals according to vehicle speed signals and gear signals through an instrument, generates prompt tones according to the square wave signals through a low-speed reminder, and realizes the prompt of the vehicle during low-speed running. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
2) The electric motor coach does not need to increase the complexity of a CAN network of a vehicle, only generates square wave signals according to vehicle speed signals and gear signals through an instrument, generates prompt tones according to the square wave signals through a low-speed reminder, and realizes the prompt of the vehicle during low-speed running. In addition, an additional control device is not required to be added in the scheme, and the low-speed reminder can be controlled by directly outputting square wave signals through the instrument. Compared with a low-speed reminder which adopts a CAN bus for communication and is controlled by a user, the low-speed reminder has the advantages of reducing cost and simplifying a control method.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An electric motor coach control system, comprising:
the vehicle control unit is used for generating a vehicle speed signal and a gear signal;
the instrument is communicated with the vehicle control unit and used for receiving the vehicle speed signal and the gear signal and generating a square wave signal according to the vehicle speed signal and the gear signal;
and the low-speed reminder is electrically connected with the instrument and used for receiving the square wave signal and generating a prompt tone according to the square wave signal.
2. The control system of claim 1, further comprising a mute switch electrically connected to the meter via a ground line.
3. The control system of claim 2, wherein the mute switch is a rocker switch.
4. The control system of claim 2, further comprising an in-vehicle instrument desk, the mute switch and the instrument being mounted on the in-vehicle instrument desk.
5. The control system of claim 2, wherein the meter includes a display screen on which information that the low speed reminder sound is turned off is displayed when the mute switch is turned off.
6. The control system of claim 1, wherein the low speed reminder is electrically connected to the meter via a single wire.
7. The control system of claim 1, wherein the meter further comprises a CAN processor and a logic processor, the CAN processor and the logic processor being electrically connected, the CAN processor being configured to receive the vehicle speed signal and the gear signal, the logic processor being configured to generate the corresponding square wave signal based on the vehicle speed signal and the gear signal.
8. The control system of claim 7, wherein in the event the vehicle speed signal is greater than a predetermined value, the logic processor no longer outputs the square wave signal and the low speed reminder no longer generates the alert tone.
9. An electric motor coach, characterized by comprising an electric motor coach control system, wherein the electric motor coach control system is the electric motor coach control system as claimed in any one of claims 1 to 8.
10. The electric motor coach as claimed in claim 9, further comprising a frame, wherein the low speed reminder is mounted on a front end surface of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895800.8U CN214355767U (en) | 2020-12-03 | 2020-12-03 | Electric motor coach control system and electric motor coach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895800.8U CN214355767U (en) | 2020-12-03 | 2020-12-03 | Electric motor coach control system and electric motor coach |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214355767U true CN214355767U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022895800.8U Active CN214355767U (en) | 2020-12-03 | 2020-12-03 | Electric motor coach control system and electric motor coach |
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|---|---|
| CN (1) | CN214355767U (en) |
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- 2020-12-03 CN CN202022895800.8U patent/CN214355767U/en active Active
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