CN114771453A - Vehicle collision detection method and device, vehicle-mounted system and computer equipment - Google Patents
Vehicle collision detection method and device, vehicle-mounted system and computer equipment Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01013—Means for detecting collision, impending collision or roll-over
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R2021/01302—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring vehicle body vibrations or noise
Abstract
The invention relates to the technical field of vehicle safety, and discloses a vehicle collision detection method, a device, a vehicle-mounted system and computer equipment, wherein the method comprises the steps of continuously monitoring the vehicle acceleration and the vehicle speed of a vehicle according to the collected data from a vehicle-mounted acceleration sensor, judging whether a vibration condition exists in real time according to the collected signals from a vehicle-mounted vibration sensor, and confirming whether a vehicle collision event needing to trigger rescue occurs according to the comparison result of the real-time vehicle speed and the historical vehicle speed with a preset vehicle speed threshold value only when the vibration condition exists, so that the high-frequency sampling of the acceleration data by the vehicle-mounted acceleration sensor is not needed, the logic judgment of the vehicle collision is not needed, the product cost and the alarm false triggering probability of the detection equipment are reduced, the accuracy of the detection result and the system performance and the service life of the detection equipment are improved, is convenient for practical application and popularization.
Description
Technical Field
The invention belongs to the technical field of vehicle safety, and particularly relates to a vehicle collision detection method and device, a vehicle-mounted system and computer equipment.
Background
With the development of modern traffic and the popularization of automobiles, the occurrence frequency of traffic accidents is also increased more and more obviously. In view of the increasing frequency, it is necessary to establish a mechanism for detecting vehicle collision and automatically alarming for quick rescue. Particularly, when a car accident happens in a collision, the information of the car accident is reported quickly and timely, and the rescue time of the emergency accident can be greatly shortened, so that the casualties of the car accident are reduced. However, the existing vehicle collision detection algorithm still has certain defects.
For example, a sensor generally used by a vehicle collision detection device at present is an acceleration sensor having an automatic detection function, then real-time acceleration acquisition data is obtained by high-frequency acquisition of the acceleration sensor, and finally, logical judgment of vehicle collision is performed at all times according to the acceleration acquisition data. However, such a high-frequency sampling method may cause an increase in product cost (i.e., if a better vehicle collision detection is desired, an acceleration sensor with better quality is required to improve detection accuracy, but the acceleration sensor with better quality means an increase in product cost) and a decrease in system performance (i.e., if a cheaper acceleration sensor is used to perform high-frequency sampling, since safety facilities inside the vehicle may interfere with the sensitivity of the sensor, the peak range of data acquired by high-frequency sampling may be greatly affected, and a collision signal of the vehicle cannot be accurately detected), so that the detection apparatus may have problems of short service life (due to the need to use the calculation capability of the detection apparatus at any time), a decrease in accuracy of a vehicle collision detection result, and a higher probability of false alarm triggering.
In summary, it is necessary to perfect an existing vehicle collision detection algorithm so as to better determine whether a vehicle has a collision accident requiring rescue and trigger an alarm in time when the vehicle is determined to have the collision accident, that is, how to accurately determine whether the vehicle collision accident requiring rescue is generated according to collected data obtained by low-frequency sampling through a cheap acceleration sensor, which is a technical problem that needs to be solved by those skilled in the art urgently.
Disclosure of Invention
In order to solve the problems of product cost increase and system performance reduction caused by the fact that high-frequency sampling is needed in the conventional vehicle collision detection mode, the invention aims to provide a vehicle collision detection method, a vehicle collision detection device, a vehicle-mounted system, computer equipment and a computer readable storage medium.
In a first aspect, the present invention provides a vehicle collision detection method, performed after a vehicle enters a driving state, including:
continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the acquired data from the vehicle-mounted acceleration sensor;
judging whether a vibration condition exists in real time according to a collected signal from a vehicle-mounted vibration sensor;
if the vibration condition is judged to exist, judging whether the real-time absolute value of the vehicle acceleration is larger than a preset acceleration threshold value or not and whether the real-time value of the vehicle speed is larger than a preset vehicle speed threshold value or not;
if the real-time absolute value of the vehicle acceleration is larger than the acceleration threshold and the real-time value of the vehicle speed is larger than the vehicle speed threshold, starting first timing;
before the first timing reaches a preset first time length, judging whether a real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not;
if the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value, starting second timing;
when the second timing reaches a preset second time length, judging whether all real-time values of the vehicle speed in the second time length are smaller than the vehicle speed threshold value;
and if all real-time values of the vehicle speed in the second time period are smaller than the vehicle speed threshold value, determining that a vehicle collision event occurs.
Based on the above invention, a new vehicle collision detection scheme based on a vehicle-mounted acceleration sensor and a vehicle-mounted vibration sensor is provided, which continuously monitors the vehicle acceleration and the vehicle speed of the vehicle according to the collected data from the vehicle-mounted acceleration sensor, and judges whether a vibration condition exists in real time according to the collected signal from the vehicle-mounted vibration sensor, and only when the vibration condition exists, confirms whether a vehicle collision event needing to trigger rescue occurs according to the comparison result of the real-time vehicle speed and the historical vehicle speed with a preset vehicle speed threshold value, thereby not only needing to perform high-frequency sampling of the acceleration data by the vehicle-mounted acceleration sensor, but also needing not to perform logic judgment of vehicle collision at any moment, and accurately confirming whether the vehicle collision event needing to trigger rescue occurs according to the collected data obtained by low-frequency sampling of a cheap acceleration sensor, and then can reduce the product cost and warning of the check out test set and trigger the probability by mistake, and promote the system performance and life of accuracy and check out test set of the testing result, facilitate the practical application and popularizing.
In one possible design, after determining that a vehicle collision event has occurred, the method further includes:
determining the current positioning data of the vehicle through a vehicle-mounted positioning module;
and uploading a vehicle collision alarm message carrying the current positioning data to a monitoring platform through a wireless communication module.
In one possible design, upon determining that a shock condition exists, the method further includes:
and when the real-time absolute value of the vehicle acceleration is not greater than the acceleration threshold and/or the real-time value of the vehicle speed is not greater than the vehicle speed threshold, continuously judging whether a vibration condition exists in real time according to a collecting signal from the vehicle-mounted vibration sensor.
In one possible design, after the first timer is started, the method further includes:
when the first timing reaches the first time, if the real-time value of the vehicle speed is found not to be smaller than the vehicle speed threshold, judging whether a vibration condition exists in real time according to a collecting signal from the vehicle-mounted vibration sensor.
In one possible design, the acceleration threshold is zero, the vehicle speed threshold is 6 kilometers per hour, the first duration is 10 seconds, and/or the second duration is 60 seconds.
In a second aspect, the present invention provides a vehicle collision detection device, which is used for starting a vehicle after the vehicle enters a driving state, and comprises a data monitoring unit, a vibration judging unit, a threshold value comparing unit, a first timing starting unit, a first vehicle speed judging unit, a second timing starting unit, a second vehicle speed judging unit and an event determining unit;
the data monitoring unit is used for continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the collected data from the vehicle-mounted acceleration sensor;
the vibration judging unit is used for judging whether a vibration condition exists in real time according to a collected signal from the vehicle-mounted vibration sensor;
the threshold comparison unit is respectively in communication connection with the data monitoring unit and the vibration judgment unit and is used for judging whether the real-time absolute value of the vehicle acceleration is greater than a preset acceleration threshold and whether the real-time value of the vehicle speed is greater than a preset vehicle speed threshold when the vibration condition is judged to exist;
the first timing starting unit is in communication connection with the threshold comparison unit and is used for starting first timing when the real-time absolute value of the vehicle acceleration is judged to be larger than the acceleration threshold and the real-time value of the vehicle speed is judged to be larger than the vehicle speed threshold;
the first vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the first timing starting unit and is used for judging whether the real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not before the first timing reaches a preset first time period;
the second timing starting unit is in communication connection with the first vehicle speed judging unit and is used for starting second timing when the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value;
the second vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the second timing starting unit and is used for judging whether all real-time values of the vehicle speed in a second time length are smaller than the vehicle speed threshold value or not when the second timing reaches a preset second time length;
the event determining unit is in communication connection with the second vehicle speed judging unit and is used for determining that a vehicle collision event occurs when all real-time values of the vehicle speed in the second time period are judged to be smaller than the vehicle speed threshold value.
In a third aspect, the invention provides a vehicle-mounted system, which comprises a power supply device, a main control board, a shell structural part and installation accessories, wherein a power module, an acceleration sensor, a vibration sensor and a Micro Control Unit (MCU) module are arranged on the main control board, the shell structural part is used for internally arranging the power supply device and the main control board, and the installation accessories are used for fixedly installing the shell structural part on a vehicle body;
the power supply module is respectively and electrically connected with the power supply device, the acceleration sensor, the vibration sensor and the MCU module, and is used for converting electric energy from the power supply device into working voltages which are respectively suitable for the acceleration sensor, the vibration sensor and the MCU module and supplying the working voltages to the acceleration sensor, the vibration sensor and the MCU module;
the MCU module is in communication connection with the acceleration sensor and the vibration sensor, respectively, and is configured to execute the vehicle collision detection method according to any possible design of the first aspect or the first aspect.
In a possible design, the main control board is further provided with a positioning module and a wireless communication module which are respectively in communication connection with the MCU module, wherein the positioning module is provided with a three-axis acceleration sensor used as the acceleration sensor;
the positioning module is used for determining the current positioning data of the vehicle after the vehicle collision event is judged to occur;
and the wireless communication module is used for uploading the vehicle collision alarm message carrying the current positioning data to a monitoring platform.
In a fourth aspect, the present invention provides a computer device, comprising a memory, a processor and a transceiver, which are sequentially connected in communication, wherein the memory is used for storing a computer program, the transceiver is used for transmitting and receiving messages, and the processor is used for reading the computer program and executing the vehicle collision detection method according to the first aspect or any possible design of the first aspect.
In a fifth aspect, the present invention provides a computer-readable storage medium having stored thereon instructions which, when run on a computer, perform a vehicle collision detection method as set forth in the first aspect or any possible design thereof.
In a sixth aspect, the invention provides a computer program product comprising instructions which, when run on a computer, cause the computer to carry out a vehicle collision detection method as described in the first aspect or any possible design of the first aspect.
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 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 present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a vehicle collision detection method provided by the invention.
Fig. 2 is a schematic structural view of a vehicle collision detection apparatus provided by the present invention.
Fig. 3 is a schematic circuit diagram of a power supply device and a main control board in the vehicle-mounted system according to the present invention.
Fig. 4 is a schematic structural diagram of a computer device provided by the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the present invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various objects, these objects should not be limited by these terms. These terms are only used to distinguish one object from another. For example, a first object may be referred to as a second object, and similarly, a second object may be referred to as a first object, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone or A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists singly or A and B exist simultaneously; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
As shown in fig. 1, the vehicle collision detection method provided in the first aspect of this embodiment may be implemented by, but not limited to, a Computer device having certain computing resources and being communicatively connected with a vehicle-mounted acceleration sensor and a vehicle-mounted vibration sensor, for example, a Micro Controller Unit (MCU), a vehicle-mounted Computer (which is a special-purpose vehicle information product developed specifically for the special operating environment and the electrical circuit characteristics of a vehicle, having high temperature resistance, dust resistance, and shock resistance functions, and capable of being integrated with an electronic circuit of the vehicle), a Personal Computer (PC, which refers to a multipurpose Computer with a size, price, and performance suitable for Personal use, and electronic devices such as a desktop Computer, a notebook Computer, a small notebook Computer, a tablet Computer, and a super notebook, etc. all belong to Personal computers, smart phones, Personal digital assistants (PADs), or wearable devices, whether a vehicle collision event needing to trigger rescue occurs or not can be accurately confirmed according to collected data obtained by low-frequency sampling of the low-cost acceleration sensor, so that the product cost and the alarm false triggering probability of the detection equipment can be reduced, the accuracy of a detection result and the system performance and the service life of the detection equipment are improved, and the practical application and popularization are facilitated. As shown in fig. 1, the vehicle collision detection method is executed after the vehicle enters a driving state (for example, after the engine is started), and may include, but is not limited to, the following steps S1 to S8.
S1, continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the acquired data from the vehicle-mounted acceleration sensor.
In the step S1, the vehicle-mounted acceleration sensor refers to an acceleration sensor fixedly mounted on the vehicle, and is configured to acquire the real-time acceleration of the vehicle by a low-frequency, medium-frequency or high-frequency sampling manner (i.e., without limitation to the sampling frequency, even if the sampling frequency is once per second). In the embodiment, whether a vehicle collision event needing to trigger rescue occurs is determined according to the comparison result between the real-time vehicle speed and the historical vehicle speed and the preset vehicle speed threshold, so that high-frequency sampling of acceleration data (namely, an acceleration sensor with excellent quality is not needed) by the vehicle-mounted acceleration sensor is not needed, and the method can be preferably realized by adopting a three-axis acceleration sensor (which is an existing acceleration sensor based on the basic principle of acceleration to realize acceleration measurement work and has the characteristics of small size, light weight, low cost and the like), for example, adopting the three-axis acceleration sensor arranged in a vehicle positioning module (positioning equipment arranged on a vehicle at present is provided with the three-axis acceleration sensor) so as to reduce the required product cost on the acceleration sensor. In addition, the monitoring result of the vehicle acceleration is the acquired real-time acceleration; meanwhile, the speed is an integral result of the acceleration and the duration, so that the monitoring result of the vehicle speed can be calculated by a conventional integral algorithm based on the acquired real-time acceleration.
And S2, judging whether a vibration condition exists in real time according to a collected signal from the vehicle-mounted vibration sensor.
In step S2, the vehicle-mounted vibration sensor refers to a vibration sensor fixedly mounted on the vehicle, which is an existing sensor for receiving external vibration mechanical quantity and converting the received external vibration mechanical quantity into an electric quantity proportional to the received external vibration mechanical quantity (i.e., a collected sensing signal), and a three-axis vibration sensor may be preferably used. In addition, specifically, according to the collected signal from the vehicle-mounted vibration sensor, it is determined whether a vibration condition exists in real time, including but not limited to: and judging whether the instant signal amplitude (namely the converted instant electric quantity) of the acquired signal from the vehicle-mounted vibration sensor exceeds a preset amplitude threshold value, if so, judging that a vibration condition exists, and otherwise, judging that the vibration condition does not exist.
And S3, if the vibration condition is judged to exist, judging whether the real-time absolute value of the vehicle acceleration is larger than a preset acceleration threshold value or not and whether the real-time value of the vehicle speed is larger than a preset vehicle speed threshold value or not.
In the step S3, since the vehicle-mounted vibration sensor is inevitably vibrated by a mechanical amount at the time of the collision of the vehicle, whether the vehicle has collided or not can be preliminarily confirmed based on the result of sensing the vibration condition. If the vibration condition is judged to exist, whether a vehicle collision event needing to trigger rescue occurs needs to be further confirmed based on the comparison results of the vehicle acceleration and the vehicle speed and corresponding threshold values. The acceleration threshold is used as a criterion for determining whether sudden acceleration or sudden deceleration occurs due to vehicle collision, and specifically, the acceleration threshold may default to zero. The vehicle speed threshold is used as a criterion for determining whether the vehicle is currently in a higher vehicle speed driving state in which it is determined that rescue needs to be triggered when a vehicle collision occurs, and specifically, the vehicle speed threshold may be, for example, 6 kilometers per hour. If it is determined that there is no vibration, it is necessary to continuously determine whether there is a vibration in real time based on the collected signal from the vehicle-mounted vibration sensor, and the process returns to step S2.
And S4, if the real-time absolute value of the vehicle acceleration is larger than the acceleration threshold and the real-time value of the vehicle speed is larger than the vehicle speed threshold, starting first timing.
In step S4, if it is determined that the real-time absolute value of the vehicle acceleration is greater than the acceleration threshold and the real-time value of the vehicle speed is greater than the vehicle speed threshold, it indicates that the vehicle is currently in a higher vehicle speed driving state and suddenly accelerates or suddenly decelerates at the moment of collision, and it is necessary to subsequently confirm whether a vehicle collision event requiring triggering of rescue occurs according to the comparison results of the real-time vehicle speed and the historical vehicle speed with the preset vehicle speed threshold. In addition, when it is determined that the real-time absolute value of the vehicle acceleration is not greater than the acceleration threshold and/or the real-time value of the vehicle speed is not greater than the vehicle speed threshold, it indicates that the vehicle is not suddenly accelerated or decelerated due to a vehicle collision and still in a safe driving state, and the vehicle safety is not affected by the vehicle collision occurring recently before, and no rescue needs to be triggered, and at this time, it may continue to determine whether a vibration condition exists in real time according to the acquisition signal from the vehicle-mounted vibration sensor, i.e., return to execute step S2.
And S5, before the first timing reaches a preset first time length, judging whether the real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not.
In step S5, the first time period is used as a criterion for determining whether a rapid deceleration occurs in a short time due to a vehicle collision, and specifically, the first time period is 10 seconds.
And S6, if the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value, starting second timing.
In step S6, if it is determined that the real-time value of the vehicle speed is smaller than the vehicle speed threshold, it indicates that the vehicle has rapidly decelerated due to a vehicle collision in a short time, and it is necessary to further confirm whether a vehicle collision event requiring rescue triggering has occurred based on the comparison result between the historical vehicle speed and the preset vehicle speed threshold. In addition, when the first time reaches the first time, if it is found that the real-time value of the vehicle speed is still not smaller than the vehicle speed threshold, it indicates that the vehicle is not rapidly decelerated in a short time due to vehicle collision, the vehicle is still in a high vehicle speed driving state, the vehicle safety is not affected by the vehicle collision which occurs recently before, and rescue does not need to be triggered, and at this time, whether a vibration condition exists or not can be continuously determined in real time according to the acquisition signal from the vehicle-mounted vibration sensor, that is, the process returns to the step S2.
And S7, when the second timing time reaches a preset second time length, judging whether all real-time values of the vehicle speed in the second time length are smaller than the vehicle speed threshold value.
In step S7, the second period of time is used as a criterion for determining whether to resume the higher vehicle speed running state within a certain period of time by rapidly decelerating in a short time due to a vehicle collision, and specifically, the second period of time is 60 seconds.
And S8, if all real-time values of the vehicle speed in the second time period are smaller than the vehicle speed threshold value, determining that a vehicle collision event occurs.
In step S8, if it is determined that all real-time values of the vehicle speed in the second time period are less than the vehicle speed threshold, it indicates that by continuously observing the vehicle speed, it is found that the vehicle is rapidly decelerated in a short time due to a vehicle collision and does not return to a higher vehicle speed driving state in a certain time period, and a vehicle safety is affected by a vehicle collision occurring recently before, it is necessary to trigger a rescue, that is, it is determined that a vehicle collision event occurs currently. In addition, if it is determined that the real-time value of the vehicle speed is not less than the vehicle speed threshold before the second timing reaches the second duration, it indicates that the vehicle has recovered to be in a higher vehicle speed driving state, and the vehicle safety is not affected by the latest vehicle collision before the vehicle collision, and rescue does not need to be triggered, and at this time, it may continue to determine whether a vibration condition exists in real time according to the acquisition signal from the vehicle-mounted vibration sensor, that is, return to execute step S2.
After the step S8, in order to trigger an alarm in time, it is preferable that after the vehicle collision event is determined, the method further includes, but is not limited to, the following steps S91 to S92: s91, determining the current positioning data of the vehicle through a vehicle-mounted positioning module; and S92, uploading a vehicle collision alarm message carrying the current positioning data to a monitoring platform through a wireless communication module. Specifically, the vehicle-mounted Positioning module may be, but is not limited to, a BDS (BeiDou Navigation Satellite System)/GPS (Global Positioning System) module, and thus the current Positioning data may be obtained based on a Satellite Positioning result; and the wireless communication module may be, but is not limited to, a wireless Mobile communication module specifically based on GSM (Global System for Mobile Communications) technology or WiFi technology. After uploading the vehicle collision warning message, the process may return to step S2 to continue the vehicle collision detection.
Thus, based on the vehicle collision detection method described in the foregoing steps S1-S8, a new vehicle collision detection scheme based on a vehicle-mounted acceleration sensor and a vehicle-mounted vibration sensor is provided, that is, on the one hand, the vehicle acceleration and the vehicle speed of the vehicle are continuously monitored according to the collected data from the vehicle-mounted acceleration sensor, on the other hand, whether a vibration condition exists is judged in real time according to the collected signal from the vehicle-mounted vibration sensor, and only when the vibration condition exists is judged, whether a vehicle collision event needing to trigger rescue occurs is confirmed according to the comparison result of the real-time vehicle speed and the historical vehicle speed with the preset vehicle speed threshold value, so that high-frequency sampling of acceleration data by the vehicle-mounted acceleration sensor is not needed, and logical judgment of vehicle collision is not needed at all times, so that the collected data obtained by low-frequency sampling by an inexpensive acceleration sensor can be used as the basis, whether a vehicle collision event needing to trigger rescue occurs or not is accurately determined, so that the product cost of the detection equipment and the alarm false triggering probability can be reduced, the accuracy of the detection result and the system performance and service life of the detection equipment are improved, and the practical application and popularization are facilitated.
As shown in fig. 2, a second aspect of the present embodiment provides a virtual device for implementing the vehicle collision detection method according to the first aspect, which is used for starting after a vehicle enters a driving state, and includes a data monitoring unit, a vibration determination unit, a threshold comparison unit, a first timing starting unit, a first vehicle speed determination unit, a second timing starting unit, a second vehicle speed determination unit, and an event determination unit;
the data monitoring unit is used for continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the collected data from the vehicle-mounted acceleration sensor;
the vibration judging unit is used for judging whether a vibration condition exists in real time according to a collected signal from the vehicle-mounted vibration sensor;
the threshold comparison unit is respectively in communication connection with the data monitoring unit and the vibration judgment unit and is used for judging whether the real-time absolute value of the vehicle acceleration is greater than a preset acceleration threshold and whether the real-time value of the vehicle speed is greater than a preset vehicle speed threshold when the vibration condition is judged to exist;
the first timing starting unit is in communication connection with the threshold comparison unit and is used for starting first timing when the real-time absolute value of the vehicle acceleration is judged to be larger than the acceleration threshold and the real-time value of the vehicle speed is judged to be larger than the vehicle speed threshold;
the first vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the first timing starting unit and is used for judging whether a real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not before the first timing reaches a preset first time length;
the second timing starting unit is in communication connection with the first vehicle speed judging unit and is used for starting second timing when the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value;
the second vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the second timing starting unit and is used for judging whether all real-time values of the vehicle speed in a second time length are smaller than the vehicle speed threshold value or not when the second timing reaches a preset second time length;
the event determining unit is in communication connection with the second vehicle speed judging unit and is used for determining that a vehicle collision event occurs when all real-time values of the vehicle speed in the second time period are judged to be smaller than the vehicle speed threshold value.
For the working process, working details and technical effects of the foregoing device provided in the second aspect of this embodiment, reference may be made to the vehicle collision detection method described in the first aspect, which is not described herein again.
As shown in fig. 3, a third aspect of the present embodiment provides an on-board system applying the vehicle collision detection method according to the first aspect, including, but not limited to, a power supply device, a main control board, a housing structural member, and a mounting accessory, wherein the main control board is disposed with, but not limited to, a power module, an acceleration sensor, a vibration sensor, and a micro control unit MCU module, the housing structural member is used for containing the power supply device and the main control board, and the mounting accessory is used for fixedly mounting the housing structural member on a vehicle body; the power supply module is respectively and electrically connected with the power supply device, the acceleration sensor, the vibration sensor and the MCU module, and is used for converting electric energy from the power supply device into working voltages which are respectively suitable for the acceleration sensor, the vibration sensor and the MCU module and supplying the working voltages to the acceleration sensor, the vibration sensor and the MCU module; the MCU module is respectively in communication connection with the acceleration sensor and the vibration sensor and is used for executing the vehicle collision detection method in the first aspect. Specifically, the power supply device can supply power by adopting an internal battery or an external wire; the power supply module can be realized by a conventional voltage stabilizing circuit and a conventional voltage lifting circuit; the acceleration sensor is the vehicle-mounted acceleration sensor of the first aspect; the vibration sensor is the vehicle-mounted vibration sensor of the first aspect. In addition, the shell structural part can adopt a conventional shell structure to internally arrange the power supply device and the main control board, for example, a black plastic shell is adopted; the mounting fittings may employ conventional mounting structures, such as bolt structures and the like.
In a possible design, the main control board is further provided with a positioning module and a wireless communication module which are respectively in communication connection with the MCU module, wherein the positioning module is provided with a three-axis acceleration sensor used as the acceleration sensor; the positioning module is used for determining the current positioning data of the vehicle after the vehicle collision event is determined; and the wireless communication module is used for uploading the vehicle collision alarm message carrying the current positioning data to a monitoring platform.
For the working process, working details and technical effects of the foregoing system provided in the third aspect of this embodiment, reference may be made to the vehicle collision detection method described in the first aspect, which is not described herein again.
A fourth aspect of the present embodiment provides a computer device for executing the vehicle collision detection method according to the first aspect, as shown in fig. 4, and the computer device comprises a memory, a processor and a transceiver, which are sequentially connected in communication, wherein the memory is used for storing a computer program, the transceiver is used for transceiving messages, and the processor is used for reading the computer program and executing the vehicle collision detection method according to the first aspect. For example, the Memory may include, but is not limited to, a Random-Access Memory (RAM), a Read-Only Memory (ROM), a Flash Memory (Flash Memory), a First-in First-out (FIFO), and/or a First-in Last-out (FILO), and the like; the processor may be, but is not limited to, a microprocessor of the model number STM32F105 family. In addition, the computer device may also include, but is not limited to, a power module, a display screen, and other necessary components.
For the working process, working details and technical effects of the foregoing computer device provided in the fourth aspect of this embodiment, reference may be made to the vehicle collision detection method described in the first aspect, which is not described herein again.
A fifth aspect of the present embodiment provides a computer-readable storage medium storing instructions including the vehicle collision detection method according to the first aspect, that is, the computer-readable storage medium storing instructions that, when executed on a computer, perform the vehicle collision detection method according to the first aspect. The computer-readable storage medium refers to a carrier for storing data, and may include, but is not limited to, a computer-readable storage medium such as a floppy disk, an optical disk, a hard disk, a flash Memory, a flash disk and/or a Memory Stick (Memory Stick), and the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
For the working process, the working details and the technical effects of the foregoing computer-readable storage medium provided in the fifth aspect of this embodiment, reference may be made to the vehicle collision detection method described in the first aspect, which is not described herein again.
A sixth aspect of the present embodiments provides a computer program product containing instructions which, when run on a computer, cause the computer to carry out the vehicle collision detection method according to the first aspect. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices.
Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (10)
1. A vehicle collision detection method, which is executed after a vehicle enters a running state, comprising:
continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the collected data from the vehicle-mounted acceleration sensor;
judging whether a vibration condition exists in real time according to a collected signal from a vehicle-mounted vibration sensor;
if the vibration condition is judged to exist, judging whether the real-time absolute value of the vehicle acceleration is larger than a preset acceleration threshold value or not and whether the real-time value of the vehicle speed is larger than a preset vehicle speed threshold value or not;
if the real-time absolute value of the vehicle acceleration is larger than the acceleration threshold and the real-time value of the vehicle speed is larger than the vehicle speed threshold, starting first timing;
before the first timing reaches a preset first time, judging whether the real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not;
if the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value, starting second timing;
when the second timing reaches a preset second time length, judging whether all real-time values of the vehicle speed in the second time length are smaller than the vehicle speed threshold value;
and if all real-time values of the vehicle speed in the second time period are smaller than the vehicle speed threshold value, determining that a vehicle collision event occurs.
2. The vehicle collision detection method according to claim 1, wherein after determining that a vehicle collision event has occurred, the method further comprises:
determining the current positioning data of the vehicle through a vehicle-mounted positioning module;
and uploading a vehicle collision alarm message carrying the current positioning data to a monitoring platform through a wireless communication module.
3. The vehicle collision detecting method according to claim 1, wherein upon determining that the vibration condition exists, the method further comprises:
and when the real-time absolute value of the vehicle acceleration is not greater than the acceleration threshold and/or the real-time value of the vehicle speed is not greater than the vehicle speed threshold, continuously judging whether a vibration condition exists in real time according to the acquisition signal from the vehicle-mounted vibration sensor.
4. The vehicle collision detecting method according to claim 1, characterized in that after starting the first timer, the method further comprises:
and when the first timing reaches the first time, if the real-time value of the vehicle speed is not smaller than the vehicle speed threshold value, judging whether a vibration condition exists in real time according to a collecting signal from the vehicle-mounted vibration sensor.
5. The vehicle collision detection method according to claim 1, characterized in that the acceleration threshold is zero, the vehicle speed threshold is 6 km/h, the first period of time is 10 seconds, and/or the second period of time is 60 seconds.
6. A vehicle collision detection device is characterized by being used for starting a vehicle after the vehicle enters a running state and comprising a data monitoring unit, a vibration judging unit, a threshold value comparing unit, a first timing starting unit, a first vehicle speed judging unit, a second timing starting unit, a second vehicle speed judging unit and an event determining unit;
the data monitoring unit is used for continuously monitoring the vehicle acceleration and the vehicle speed of the vehicle according to the acquired data from the vehicle-mounted acceleration sensor;
the vibration judging unit is used for judging whether a vibration condition exists in real time according to a collected signal from the vehicle-mounted vibration sensor;
the threshold comparison unit is respectively in communication connection with the data monitoring unit and the vibration judgment unit and is used for judging whether the real-time absolute value of the vehicle acceleration is greater than a preset acceleration threshold value or not and whether the real-time value of the vehicle speed is greater than a preset vehicle speed threshold value or not when the vibration condition is judged to exist;
the first timing starting unit is in communication connection with the threshold comparison unit and is used for starting first timing when the real-time absolute value of the vehicle acceleration is judged to be larger than the acceleration threshold and the real-time value of the vehicle speed is judged to be larger than the vehicle speed threshold;
the first vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the first timing starting unit and is used for judging whether a real-time value of the vehicle speed is smaller than the vehicle speed threshold value or not before the first timing reaches a preset first time length;
the second timing starting unit is in communication connection with the first vehicle speed judging unit and is used for starting second timing when the real-time value of the vehicle speed is judged to be smaller than the vehicle speed threshold value;
the second vehicle speed judging unit is respectively in communication connection with the data monitoring unit and the second timing starting unit and is used for judging whether all real-time values of the vehicle speed in a second time length are smaller than the vehicle speed threshold value or not when the second timing reaches a preset second time length;
and the event determining unit is in communication connection with the second vehicle speed judging unit and is used for determining that a vehicle collision event occurs when all real-time values of the vehicle speed in the second time period are smaller than the vehicle speed threshold value.
7. The vehicle-mounted system is characterized by comprising a power supply device, a main control board, a shell structural part and installation accessories, wherein a power module, an acceleration sensor, a vibration sensor and a Micro Control Unit (MCU) module are arranged on the main control board, the shell structural part is used for internally installing the power supply device and the main control board, and the installation accessories are used for fixedly installing the shell structural part on a vehicle body;
the power supply module is respectively and electrically connected with the power supply device, the acceleration sensor, the vibration sensor and the MCU module, and is used for converting electric energy from the power supply device into working voltages which are respectively suitable for the acceleration sensor, the vibration sensor and the MCU module and supplying the working voltages to the acceleration sensor, the vibration sensor and the MCU module;
the MCU module is respectively in communication connection with the acceleration sensor and the vibration sensor and is used for executing the vehicle collision detection method according to any one of claims 1 to 5.
8. The vehicle-mounted system according to claim 7, wherein a positioning module and a wireless communication module are further arranged on the main control board, and are respectively in communication connection with the MCU module, wherein the positioning module is provided with a three-axis acceleration sensor used as the acceleration sensor;
the positioning module is used for determining the current positioning data of the vehicle after the vehicle collision event is determined;
and the wireless communication module is used for uploading the vehicle collision alarm message carrying the current positioning data to a monitoring platform.
9. A computer device comprising a memory, a processor and a transceiver communicatively connected in sequence, wherein the memory is configured to store a computer program, the transceiver is configured to transmit and receive messages, and the processor is configured to read the computer program and execute the vehicle collision detection method according to any one of claims 1 to 5.
10. A computer-readable storage medium having stored thereon instructions which, when executed on a computer, carry out a vehicle collision detection method according to any one of claims 1 to 5.
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| CN202210595959.9A CN114771453A (en) | 2022-05-30 | 2022-05-30 | Vehicle collision detection method and device, vehicle-mounted system and computer equipment |
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| CN202210595959.9A CN114771453A (en) | 2022-05-30 | 2022-05-30 | Vehicle collision detection method and device, vehicle-mounted system and computer equipment |
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