CN110682861A - Error-proofing system and method of automobile prompt tone device - Google Patents
Error-proofing system and method of automobile prompt tone device Download PDFInfo
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- CN110682861A CN110682861A CN201910943199.4A CN201910943199A CN110682861A CN 110682861 A CN110682861 A CN 110682861A CN 201910943199 A CN201910943199 A CN 201910943199A CN 110682861 A CN110682861 A CN 110682861A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
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Abstract
The invention relates to the technical field of automobile warning tone devices, in particular to an error-proofing system and method of an automobile warning tone device, which comprises a power supply, a microcontroller, a digital signal processing unit, a power amplifier and a loudspeaker which are sequentially connected; the microcontroller is respectively in communication connection with the automobile CAN network, the power supply, the digital signal processing unit and the power amplifier and is used for monitoring state signals of the power supply, the digital signal processing unit and the power amplifier and completing resetting of the power supply, the digital signal processing unit and/or the power amplifier according to the state signals obtained through monitoring. The invention aims to provide an error-proofing system and method of an automobile prompt tone device, and the technical scheme provided by the invention solves the technical problems that the existing low-speed prompt tone device of an electric automobile cannot be restarted due to faults and emits unexpected prompt tones.
Description
Technical Field
The invention relates to the technical field of automobile prompt tone devices, in particular to an error-proofing system and method of an automobile prompt tone device.
Technical Field
Electric vehicles are increasingly recognized by the nation and the market as a vehicle without pollution emission. The electric automobile has no fuel engine, no sound is generated when the electric automobile starts and runs at low speed, and passers by the automobile can easily ignore the approaching of the automobile and cause collision accidents. Further, the state also issues mandatory standards for such problems, and the electric vehicle needs to generate an alarm sound, and a low-speed alarm sound generating device is also started to be equipped on the electric vehicle.
The low-speed warning tone device of the electric automobile is used for avoiding the accident of collision, and if the device fails to operate or gives an unexpected warning tone, the device also has potential safety hazards, so that the accident is caused.
Disclosure of Invention
The invention aims to provide an error-proofing system and method of an automobile prompt tone device, and the technical scheme provided by the invention solves the technical problems that the existing low-speed prompt tone device of an electric automobile cannot be restarted due to faults and emits unexpected prompt tones.
In order to solve the technical problem, the invention provides an error-proofing system of an automobile warning tone device, which comprises a power supply, a microcontroller, a digital signal processing unit, a power amplifier and a loudspeaker, wherein the power supply, the microcontroller, the digital signal processing unit, the power amplifier and the loudspeaker are sequentially connected;
the microcontroller is respectively in communication connection with the automobile CAN network, the power supply, the digital signal processing unit and the power amplifier and is used for monitoring state signals of the power supply, the digital signal processing unit and the power amplifier and completing resetting of the power supply, the digital signal processing unit and/or the power amplifier according to the state signals obtained through monitoring.
Preferably, the digital signal processing unit comprises a sound generation module, an amplitude limiting module, a filtering module and a feedback module connected between the sound generation module and the filtering module, wherein the sound generation module, the amplitude limiting module and the filtering module are sequentially connected;
the amplitude limiting module is used for limiting the volume range; the filtering module is used for limiting a frequency range; the feedback module is used for intercepting whether the signal meets the design requirement.
The invention also provides a mistake-proofing method of the automobile prompt tone device, which is used for the mistake-proofing system; the method comprises a resetting step and a self-adapting step:
the resetting step comprises:
a100, a microcontroller acquires state signals of a power supply, a digital signal processing unit and a power amplifier;
a200, the microcontroller acquires a state signal error of a power supply, a digital signal processing unit and/or a power amplifier and sends a reset control signal to a module with the wrong state signal;
a300, the power supply, the digital signal processing unit and/or the power amplifier receive a reset control signal, and start a reset program to try to recover;
the step of self-adapting comprises:
b100, the feedback module acquires the audio signal output by the filtering module and outputs a feedback signal to the sound generation module;
b200, if the audio signal exceeds the set audio signal of the sound generation module, the feedback module outputs a feedback signal with a reduced value; if the audio signal is smaller than the set audio signal of the sound generation module, the feedback module outputs a feedback signal with an increased value;
and B300, the sound generation module outputs an audio signal according to the feedback signal.
Preferably, in the resetting step, if an error still occurs after the power supply, the digital signal processing unit and/or the power amplifier try to recover the set number of times, an error alarm is given, and the automobile warning tone device is turned off.
Preferably, in the self-adapting step, if the audio signal is not adapted to the set audio signal of the sound generating module after the set number of cycles, the digital signal processing unit feeds back wrong status information to the microcontroller, and the process proceeds to step a 200.
Therefore, the technical scheme provided by the invention can ensure that the automobile warning tone device can normally run, can automatically recover once an error occurs, can give an alarm in the worst case, and closes the equipment to prevent secondary accidents; it is possible to ensure that the output sound is correct and that no unintended sound is output.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of the connection of an error proofing system of an automobile warning tone device according to an embodiment of the present invention;
fig. 2 is a flow chart of an error proofing method of the automobile warning tone device according to the embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The low-speed warning tone device of the electric automobile is used for avoiding the accident of collision, and if the device fails to operate or gives an unexpected warning tone, the device also has potential safety hazards, so that the accident is caused.
As shown in fig. 1, in order to solve the above technical problem, the present embodiment provides an error protection system for an automotive warning tone device, which can automatically recover when an error occurs and ensure that the output sound is correct and does not output unexpected sound in order to ensure that the automotive warning tone device can normally operate, and the error protection system comprises a power supply, a microcontroller, a digital signal processing unit, a power amplifier and a speaker which are connected in sequence.
The power supply source obtains power supply from the outside and provides an internal power supply for the device to use; the microcontroller is communicated with the outside and controls the functional operation of the device through command information; the digital signal processing unit sends generated audio information to the power amplifier after acquiring the instruction of the microcontroller; the power amplifier amplifies the audio signal obtained by the digital signal processing unit and then transmits the amplified audio signal to the loudspeaker; the speaker converts the amplified audio signal into sound to be output.
In the connection structure, the microcontroller is respectively in communication connection with the automobile CAN network, the power supply, the digital signal processing unit and the power amplifier and is used for monitoring state signals of the power supply, the digital signal processing unit and the power amplifier and completing resetting of the power supply, the digital signal processing unit and/or the power amplifier according to the state signals obtained through monitoring.
In order to ensure the normal operation of the device, the microcontroller monitors the state signals of the power supply, the digital signal processing unit and the power amplifier, and once a state error occurs in any one part, the microcontroller starts a reset program of the part to try to recover; if the mistake still occurs more than three times, the error alarm is sent to the upper computer through the external interface, and the automobile prompt tone device is closed.
Furthermore, in order to ensure that the output sound is correct and not output unexpected sound, the digital signal processing unit comprises a sound generation module, an amplitude limiting module and a filtering module which are sequentially connected, and a feedback module connected between the sound generation module and the filtering module;
the amplitude limiting module is used for limiting the volume range; the filtering module is used for limiting the frequency range; the feedback module is used for intercepting whether the signal meets the design requirement. The feedback loop is used for intercepting whether the signal meets the design requirement. When the feedback loop is out of the design requirement, the sound generation module is enabled to reduce the value; and when the feedback loop is less than the design requirement, the sound generation module is enabled to increase the value.
As shown in fig. 2, based on the error-proofing system, the embodiment further provides an error-proofing method for an automobile warning tone device, which includes a resetting step and a self-adapting step:
wherein, the step of resetting includes:
a100, a microcontroller acquires state signals of a power supply, a digital signal processing unit and a power amplifier;
a200, the microcontroller acquires a state signal error of a power supply, a digital signal processing unit and/or a power amplifier and sends a reset control signal to a module with the wrong state signal;
a300, the power supply, the digital signal processing unit and/or the power amplifier receive a reset control signal, and start a reset program to try to recover;
the self-adapting step comprises:
b100, the feedback module acquires the audio signal output by the filtering module and outputs a feedback signal to the sound generation module;
b200, if the audio signal exceeds the set audio signal of the sound generation module, the feedback module outputs a feedback signal with a reduced value; if the audio signal is smaller than the set audio signal of the sound generation module, the feedback module outputs a feedback signal with an increased value;
and B300, outputting the audio signal by the sound generation module according to the feedback signal.
In the resetting step, if an error still occurs after the power supply, the digital signal processing unit and/or the power amplifier try to recover the set times, an error alarm is sent out, and the automobile warning tone device is turned off.
In the self-adapting step, if the audio signal is still not adapted to the set audio signal of the sound generating module after the cycle is set for the number of times, the digital signal processing unit feeds back wrong status information to the microcontroller, and the process proceeds to step a 200.
In conclusion, the technical scheme provided by the embodiment can ensure that the automobile warning tone device can normally operate, can automatically recover once an error occurs, can give an alarm in the worst case, and closes the equipment to prevent a secondary accident; it is possible to ensure that the output sound is correct and that no unintended sound is output.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (5)
1. The utility model provides a mistake proofing system of car prompt tone device which characterized in that: the device comprises a power supply, a microcontroller, a digital signal processing unit, a power amplifier and a loudspeaker which are connected in sequence;
the microcontroller is respectively in communication connection with the automobile CAN network, the power supply, the digital signal processing unit and the power amplifier and is used for monitoring state signals of the power supply, the digital signal processing unit and the power amplifier and completing resetting of the power supply, the digital signal processing unit and/or the power amplifier according to the state signals obtained through monitoring.
2. The error-proofing system according to claim 1, characterized in that: the digital signal processing unit comprises a sound generating module, an amplitude limiting module, a filtering module and a feedback module, wherein the sound generating module, the amplitude limiting module and the filtering module are sequentially connected, and the feedback module is connected between the sound generating module and the filtering module;
the amplitude limiting module is used for limiting the volume range; the filtering module is used for limiting a frequency range; the feedback module is used for intercepting whether the signal meets the design requirement.
3. An error-proofing method of an automobile prompt tone device is characterized in that: for the error proofing system of claim 2; the method comprises a resetting step and a self-adapting step:
the resetting step comprises:
a100, a microcontroller acquires state signals of a power supply, a digital signal processing unit and a power amplifier;
a200, the microcontroller acquires a state signal error of a power supply, a digital signal processing unit and/or a power amplifier and sends a reset control signal to a module with the wrong state signal;
a300, the power supply, the digital signal processing unit and/or the power amplifier receive a reset control signal, and start a reset program to try to recover;
the step of self-adapting comprises:
b100, the feedback module acquires the audio signal output by the filtering module and outputs a feedback signal to the sound generation module;
b200, if the audio signal exceeds the set audio signal of the sound generation module, the feedback module outputs a feedback signal with a reduced value; if the audio signal is smaller than the set audio signal of the sound generation module, the feedback module outputs a feedback signal with an increased value;
and B300, the sound generation module outputs an audio signal according to the feedback signal.
4. The error-proofing method according to claim 3, characterized in that: in the resetting step, if an error still occurs after the power supply, the digital signal processing unit and/or the power amplifier try to recover the set times, an error alarm is sent out, and the automobile warning tone device is turned off.
5. The error-proofing method according to claim 3, characterized in that: in the self-adapting step, if the audio signal is still not adapted to the set audio signal of the sound generating module after the number of times of the cycle setting, the digital signal processing unit feeds back wrong status information to the microcontroller, and the process proceeds to step a 200.
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| CN201910943199.4A CN110682861B (en) | 2019-09-30 | 2019-09-30 | Error-proofing system and method of automobile prompt tone device |
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| CN201910943199.4A CN110682861B (en) | 2019-09-30 | 2019-09-30 | Error-proofing system and method of automobile prompt tone device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114520944A (en) * | 2020-11-19 | 2022-05-20 | 上海汽车集团股份有限公司 | Error-proofing system and method of three-dimensional warning sound |
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