CN118182318A - Low-speed prompt tone system of electric automobile - Google Patents
Low-speed prompt tone system of electric automobile Download PDFInfo
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- CN118182318A CN118182318A CN202410345068.7A CN202410345068A CN118182318A CN 118182318 A CN118182318 A CN 118182318A CN 202410345068 A CN202410345068 A CN 202410345068A CN 118182318 A CN118182318 A CN 118182318A
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Abstract
The invention provides a low-speed prompt tone system of an electric automobile, which comprises: automobile instrument, power amplifier module and loudspeaker; the automobile instrument is provided with a PCB, the output end of the PCB is connected with the input end of the power amplification module, and the output end of the power amplification module is connected with the input end of the loudspeaker; the PCB is provided with an MCU and a CAN transceiver, the MCU receives the vehicle speed and gear information through the CAN transceiver and judges whether the vehicle is in a forward gear or not and the vehicle speed is lower than a set vehicle speed threshold value, if yes, the PCB is controlled to output alarm prompt information, and the power amplifier module drives the loudspeaker to prompt broadcasting. The invention can reduce the production cost of the electric automobile and increase the intelligence of the automobile electronic equipment.
Description
Technical Field
The invention relates to the technical field of automobile electronics, in particular to a low-speed prompt sound system of an electric automobile.
Background
When the electric automobile runs at a low speed in a pure electric mode, the driving motor is smaller in starting sound, so that pedestrians are not easy to perceive the approach of the automobile, potential safety hazards exist, and therefore, according to the GB/T37153 standard requirement, the electric automobile is required to be provided with an automobile prompt sound system, namely a low-speed prompt sound alarm is required to be installed, and when the running speed of the electric automobile is lower than a certain value, a prompt sound is sent out, and the automobile is warned to the outside personnel of the automobile to approach the automobile, so that the safety of the outside personnel is improved. The existing prompt tone system at present only comprises a low-speed prompt tone alarm, wherein the low-speed prompt tone alarm is a single device, and is required to finish the receiving and processing of signals such as vehicle speed, gear and the like and send out prompt sound. The low-speed prompt tone alarm needs to be provided with a hard wire signal input interface, and because signals such as a vehicle speed, a gear and the like are needed by the low-speed prompt alarm, a gateway and a CAN node are added to a whole vehicle network, and the production cost of the vehicle is increased. Therefore, how to conveniently and inexpensively set the low-speed warning sound alarm has important significance.
Disclosure of Invention
The invention provides a low-speed prompt tone system of an electric automobile, which solves the problem that the production cost of the automobile is increased due to the fact that a gateway and a CAN node are required to be added to a whole automobile network by arranging a low-speed prompt tone alarm of the existing electric automobile, and CAN reduce the production cost of the electric automobile and increase the intelligence of automobile electronic equipment.
In order to achieve the above object, the present invention provides the following technical solutions:
an electric vehicle low speed alert sound system comprising: automobile instrument, power amplifier module and loudspeaker;
The automobile instrument is provided with a PCB, the output end of the PCB is connected with the input end of the power amplification module, and the output end of the power amplification module is connected with the input end of the loudspeaker;
The PCB is provided with an MCU and a CAN transceiver, the MCU receives the vehicle speed and gear information through the CAN transceiver and judges whether the vehicle is in a forward gear or not and the vehicle speed is lower than a set vehicle speed threshold value, if yes, the PCB is controlled to output alarm prompt information, and the power amplifier module drives the loudspeaker to prompt broadcasting.
Preferably, the PCB board is provided with an audio recording and playing module, and the audio recording and playing module is connected with the MCU through signals;
and the MCU controls the loudspeaker to play the preset audio stored by the audio recording and playing module according to the speed and gear information.
Preferably, the MCU is provided with a hard wire input interface circuit, and the hard wire input interface circuit is respectively connected with a vehicle speed signal wire, a small lamp signal wire, a left steering signal wire, a right steering signal wire and a reversing signal wire of the whole vehicle;
the MCU receives speed and gear signals of the vehicle through the hard wire input interface circuit.
Preferably, the PCB is provided with a power module;
the power module is electrically connected with the MCU, the audio recording and playing module and the power amplification module respectively so as to supply power.
Preferably, the MCU sends a low-speed prompt CAN message to the whole vehicle network through the CAN transceiver when the vehicle is in a forward gear and the vehicle speed is lower than a set vehicle speed threshold.
Preferably, the method further comprises: MP5;
The MP5 is in communication connection with the automobile instrument through a CAN bus, and after the MP5 receives the low-speed prompt CAN message through the CAN bus, the MP5 displays low-speed prompt information according to the low-speed prompt CAN message so as to remind a driver in the automobile.
Preferably, the MP5 is provided with a man-machine interaction operation interface, and the vehicle occupant sets the audio content of the low-speed prompt tone of the vehicle and the set threshold value through the man-machine interaction operation interface.
Preferably, the method further comprises: a noise acquisition device;
the noise acquisition device is in signal connection with the automobile instrument and is used for acquiring an automobile external noise signal, the automobile instrument judges the automobile external noise sound level according to the automobile external noise signal acquired by the noise acquisition device, and the MCU controls the output power of the power amplification module according to the automobile external noise sound level so as to enable the volume played by the loudspeaker to be matched with the automobile external noise sound level.
Preferably, the method further comprises: the vehicle-mounted vision acquisition device;
The vehicle-mounted visual acquisition device is in signal connection with the automobile instrument, the vehicle-mounted visual acquisition device is used for acquiring video images around a vehicle and identifying whether pedestrians exist around the vehicle, and the MCU controls the power amplifier module to activate when the pedestrians exist around the vehicle so as to control the volume of the loudspeaker when the vehicle is in a forward gear and the speed is lower than a set speed threshold.
Preferably, the method further comprises: a radar sensor;
the radar sensor is in signal connection with the automobile instrument, the radar sensor is used for collecting the distance between the pedestrians and the vehicles around the vehicle, and the MCU controls the loudspeaker to carry out low-speed prompt when the distance between the pedestrians and the vehicles around the vehicle is smaller than a set threshold value.
The invention provides a low-speed prompt tone system of an electric automobile, which receives speed and gear signals through an automobile instrument, and further controls a power amplifier module to play and control a low-speed prompt tone of a loudspeaker according to the speed and the gear signals, so that the problem that the production cost of the automobile is increased due to the fact that a gateway and a CAN node are required to be added to a whole automobile network due to the arrangement of a low-speed prompt tone alarm of the existing electric automobile is solved, the production cost of the electric automobile CAN be reduced, and the intelligence of automobile electronic equipment is improved.
Drawings
In order to more clearly illustrate the specific embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described.
Fig. 1 is a schematic diagram of a low-speed alert sound system of an electric automobile.
Detailed Description
In order to make the solution of the embodiment of the present invention better understood by those skilled in the art, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
Aiming at the problem that the cost of the automobile is increased when the low-speed warning sound alarm is adopted by the current electric automobile, the invention provides the low-speed warning sound system of the electric automobile, which solves the problem that the production cost of the automobile is increased due to the fact that the gateway and the CAN node are required to be added to the whole automobile network by arranging the low-speed warning sound alarm of the existing electric automobile, and CAN reduce the production cost of the electric automobile and increase the intelligence of automobile electronic equipment.
As shown in fig. 1, a low-speed alert sound system for an electric vehicle includes: automobile instrument, power amplifier module and speaker. The automobile instrument is provided with a PCB, the output end of the PCB is connected with the input end of the power amplifier module, and the output end of the power amplifier module is connected with the input end of the loudspeaker. The PCB is provided with an MCU and a CAN transceiver, the MCU receives the vehicle speed and gear information through the CAN transceiver and judges whether the vehicle is in a forward gear or not and the vehicle speed is lower than a set vehicle speed threshold value, if yes, the PCB is controlled to output alarm prompt information, and the power amplifier module drives the loudspeaker to prompt broadcasting.
In particular, the system no longer consists of a single, complex-structured alarm, but rather of a motormeter on the vehicle plus a loudspeaker; because the automobile instrument is provided with the CAN transceiver, the MCU chip and the power module, only one power amplifier module is needed, the automobile instrument is used for inputting, processing and judging the speed and gear signals during working, and the loudspeaker is controlled to send out prompt sounds. When the vehicle runs, the CAN transceiver in the automobile instrument receives the vehicle speed and gear signals, and when the MCU judges that the vehicle is in a forward gear and the vehicle speed is lower than a set threshold value, the power amplification module is responsible for amplifying the audio, and the loudspeaker is driven to play a set audio, so that low-speed prompt sound is realized. The cost of the power amplifier module added by the automobile instrument is far lower than that of an independent low-speed prompt alarm, and the low-cost automobile prompt sound system can be realized.
Further, the PCB board is provided with an audio recording and playing module, and the audio recording and playing module is connected with the MCU through signals. And the MCU controls the loudspeaker to play the preset audio stored by the audio recording and playing module according to the speed and gear information.
Further, the MCU is provided with a hard wire input interface circuit, and the hard wire input interface circuit is respectively connected with a vehicle speed signal wire, a small lamp signal wire, a left steering signal wire, a right steering signal wire and a reversing signal wire of the whole vehicle;
the MCU receives speed and gear signals of the vehicle through the hard wire input interface circuit.
Further, the PCB is provided with a power module;
the power module is electrically connected with the MCU, the audio recording and playing module and the power amplification module respectively so as to supply power.
Further, when the vehicle is in a forward gear and the vehicle speed is lower than a set vehicle speed threshold value, the MCU sends a low-speed prompt CAN message to the whole vehicle network through the CAN transceiver.
The system further comprises: MP5;
The MP5 is in communication connection with the automobile instrument through a CAN bus, and after the MP5 receives the low-speed prompt CAN message through the CAN bus, the MP5 displays low-speed prompt information according to the low-speed prompt CAN message so as to remind a driver in the automobile.
Further, the MP5 is provided with a man-machine interaction operation interface, and a vehicle passenger sets the audio content of the low-speed prompt tone of the vehicle and the set vehicle threshold through the man-machine interaction operation interface.
The system further comprises: a noise acquisition device; the noise acquisition device is in signal connection with the automobile instrument and is used for acquiring an automobile external noise signal, the automobile instrument judges the automobile external noise sound level according to the automobile external noise signal acquired by the noise acquisition device, and the MCU controls the output power of the power amplification module according to the automobile external noise sound level so as to enable the volume played by the loudspeaker to be matched with the automobile external noise sound level.
The system further comprises: the vehicle-mounted vision acquisition device; the vehicle-mounted visual acquisition device is in signal connection with the automobile instrument, the vehicle-mounted visual acquisition device is used for acquiring video images around a vehicle and identifying whether pedestrians exist around the vehicle, and the MCU controls the power amplifier module to activate when the pedestrians exist around the vehicle so as to control the volume of the loudspeaker when the vehicle is in a forward gear and the speed is lower than a set speed threshold.
The system further comprises: a radar sensor; the radar sensor is in signal connection with the automobile instrument, the radar sensor is used for collecting the distance between the pedestrians and the vehicles around the vehicle, and the MCU controls the loudspeaker to carry out low-speed prompt when the distance between the pedestrians and the vehicles around the vehicle is smaller than a set threshold value.
Therefore, the invention provides the low-speed prompt tone system of the electric automobile, which receives the speed and gear signals through the automobile instrument, and further controls the power amplifier module to play and control the low-speed prompt tone of the loudspeaker according to the speed and gear signals, so that the problem that the production cost of the automobile is increased due to the fact that a gateway and a CAN node are required to be added to an entire automobile network due to the arrangement of the low-speed prompt tone alarm of the existing electric automobile is solved, the production cost of the electric automobile CAN be reduced, and the intelligence of automobile electronic equipment is increased.
While the construction, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, the above description is only a preferred embodiment of the present invention, but the present invention is not limited to the embodiments shown in the drawings, and all changes made according to the concepts of the present invention or modifications as equivalent embodiments are within the scope of the present invention without departing from the spirit covered by the specification and drawings.
Claims (10)
1. An electric automobile low speed alert sound system, comprising: automobile instrument, power amplifier module and loudspeaker;
The automobile instrument is provided with a PCB, the output end of the PCB is connected with the input end of the power amplification module, and the output end of the power amplification module is connected with the input end of the loudspeaker;
The PCB is provided with an MCU and a CAN transceiver, the MCU receives the vehicle speed and gear information through the CAN transceiver and judges whether the vehicle is in a forward gear or not and the vehicle speed is lower than a set vehicle speed threshold value, if yes, the PCB is controlled to output alarm prompt information, and the power amplifier module drives the loudspeaker to prompt broadcasting.
2. The low-speed alert sound system of an electric automobile according to claim 1, wherein the PCB board is provided with an audio recording and playing module, and the audio recording and playing module is in signal connection with the MCU;
and the MCU controls the loudspeaker to play the preset audio stored by the audio recording and playing module according to the speed and gear information.
3. The low-speed warning sound system of the electric automobile according to claim 2, wherein the MCU is provided with a hard wire input interface circuit, and the hard wire input interface circuit is respectively connected with a speed signal wire, a small lamp signal wire, a left steering signal wire, a right steering signal wire and a reversing signal wire of the whole automobile;
the MCU receives speed and gear signals of the vehicle through the hard wire input interface circuit.
4. The electric vehicle low-speed alert sound system according to claim 3, wherein the PCB board is provided with a power module;
the power module is electrically connected with the MCU, the audio recording and playing module and the power amplification module respectively so as to supply power.
5. The low-speed alert sound system of an electric vehicle according to claim 4, wherein the MCU sends a low-speed alert CAN message to the whole vehicle network through the CAN transceiver when the vehicle is in a forward gear and the vehicle speed is below a set vehicle speed threshold.
6. The electric vehicle low-speed alert sound system according to claim 5, further comprising: MP5;
The MP5 is in communication connection with the automobile instrument through a CAN bus, and after the MP5 receives the low-speed prompt CAN message through the CAN bus, the MP5 displays low-speed prompt information according to the low-speed prompt CAN message so as to remind a driver in the automobile.
7. The electric car low-speed alert sound system according to claim 6, wherein the MP5 is provided with a man-machine interaction operation interface through which a vehicle occupant sets an audio content of a car low-speed alert sound and the set car threshold.
8. The electric vehicle low-speed alert sound system according to claim 7, further comprising: a noise acquisition device;
the noise acquisition device is in signal connection with the automobile instrument and is used for acquiring an automobile external noise signal, the automobile instrument judges the automobile external noise sound level according to the automobile external noise signal acquired by the noise acquisition device, and the MCU controls the output power of the power amplification module according to the automobile external noise sound level so as to enable the volume played by the loudspeaker to be matched with the automobile external noise sound level.
9. The electric vehicle low-speed alert sound system according to claim 8, further comprising: the vehicle-mounted vision acquisition device;
The vehicle-mounted visual acquisition device is in signal connection with the automobile instrument, the vehicle-mounted visual acquisition device is used for acquiring video images around a vehicle and identifying whether pedestrians exist around the vehicle, and the MCU controls the power amplifier module to activate when the pedestrians exist around the vehicle so as to control the volume of the loudspeaker when the vehicle is in a forward gear and the speed is lower than a set speed threshold.
10. The electric vehicle low-speed alert sound system according to claim 9, further comprising: a radar sensor;
the radar sensor is in signal connection with the automobile instrument, the radar sensor is used for collecting the distance between the pedestrians and the vehicles around the vehicle, and the MCU controls the loudspeaker to carry out low-speed prompt when the distance between the pedestrians and the vehicles around the vehicle is smaller than a set threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410345068.7A CN118182318A (en) | 2024-03-25 | 2024-03-25 | Low-speed prompt tone system of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410345068.7A CN118182318A (en) | 2024-03-25 | 2024-03-25 | Low-speed prompt tone system of electric automobile |
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| Publication Number | Publication Date |
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| CN118182318A true CN118182318A (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410345068.7A Pending CN118182318A (en) | 2024-03-25 | 2024-03-25 | Low-speed prompt tone system of electric automobile |
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| CN (1) | CN118182318A (en) |
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- 2024-03-25 CN CN202410345068.7A patent/CN118182318A/en active Pending
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