CN115402236B - Vehicle-mounted sensor position monitoring system and method - Google Patents
Vehicle-mounted sensor position monitoring system and method Download PDFInfo
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- CN115402236B CN115402236B CN202211137977.9A CN202211137977A CN115402236B CN 115402236 B CN115402236 B CN 115402236B CN 202211137977 A CN202211137977 A CN 202211137977A CN 115402236 B CN115402236 B CN 115402236B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 138
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- 239000013307 optical fiber Substances 0.000 claims abstract description 199
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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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
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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Abstract
The embodiment of the invention relates to the technical field of intelligent driving, and discloses a vehicle-mounted sensor position monitoring system and method, wherein the system comprises the following steps: controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system; after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments; and transmitting the variation of the position of the optical fiber sensor to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information. By applying the technical scheme of the invention, the position of the vehicle-mounted sensor can be monitored, and the change condition can be quantified; after the vehicle-mounted sensor is shifted, maintenance personnel can be guided to restore the installation position of the vehicle-mounted sensor.
Description
Technical Field
The embodiment of the invention relates to the technical field of intelligent driving, in particular to a vehicle-mounted sensor position monitoring system and method.
Background
Currently, as a core component of an intelligent vehicle, an on-vehicle sensor (such as a laser radar, a camera, a millimeter wave radar, etc.) is greatly affected by the installation position of the on-vehicle sensor, and the installation position of the on-vehicle sensor determines not only the performance condition but also the use safety of the intelligent vehicle and influences the service life of an intelligent driving system in the intelligent vehicle. Therefore, before the intelligent vehicle leaves the factory, various vehicle-mounted sensors are generally installed at reasonable positions of the intelligent vehicle.
However, in the use process of the intelligent vehicle, the installation position of the vehicle-mounted sensor is sometimes changed due to the influence of factors such as collision, so that a scheme capable of monitoring whether the position of the vehicle-mounted sensor is changed is needed.
Disclosure of Invention
In view of the above problems, the embodiments of the present invention provide a vehicle-mounted sensor position monitoring system and method, which are used for solving the problem in the prior art that the relative position cannot be repaired by guiding.
According to an aspect of an embodiment of the present invention, there is provided an in-vehicle sensor position monitoring system including: the monitoring system comprises a monitoring host, an optical fiber sensor and an alarm;
The monitoring host is used for controlling the light source to emit light signals to the optical fiber sensor;
The optical fiber sensor is connected with the monitoring host, the relative positions of the optical fiber sensor and the vehicle-mounted sensor are fixed, and the optical fiber sensor is used for transmitting corresponding optical signals to the monitoring host after receiving the optical signals;
The monitoring host is also used for determining the change of the position of the optical fiber sensor according to the change of the optical signals transmitted at different times after receiving the optical signals transmitted at different times by the optical fiber sensor;
The alarm is used for receiving the change quantity of the position of the optical fiber sensor transmitted by the monitoring host and sending out alarm information according to the change quantity.
In an optional manner, when the variation of the optical signal exceeds a first target variation threshold, the monitoring host is further configured to determine a deformation level corresponding to the variation of the optical signal according to a preset warning rule and the variation of the optical signal, and transmit the deformation level to the alarm, where the warning rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different deformation levels;
The warning information sent by the warning device comprises warning information corresponding to the deformation grade.
In an optional manner, the monitoring host is further configured to determine, according to the initial position of the optical fiber sensor and the amount of change in the position of the optical fiber sensor, the position of the optical fiber sensor after the change.
In an alternative, the monitoring host includes a detector and a microprocessor;
the detector is used for converting the optical signal transmitted by the optical fiber sensor into an electric signal, processing the electric signal, and then sending the processed electric signal to the microprocessor, wherein the processing of the electric signal comprises at least one of amplification processing and filtering processing;
The microprocessor is used for converting the received electric signals into corresponding digital signals, and determining the change amount of the position of the optical fiber sensor and the changed position of the optical fiber sensor by carrying out signal demodulation calculation on the digital signals.
In an optional manner, the monitoring host is further configured to control the light source to emit an optical signal to the optical fiber sensor before monitoring the position of the vehicle-mounted sensor, and determine whether the optical fiber sensor can normally transmit the optical signal according to whether the optical signal transmitted by the optical fiber sensor is received.
In an optional manner, when the variation of the optical signal exceeds a second target variation threshold, the monitoring host is further configured to determine a repair level corresponding to the variation according to a preset repair level rule and the variation of the optical signal, where the repair rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different repair levels;
The alarm is also used for receiving the repair grade transmitted by the monitoring host and sending repair reminding information corresponding to the repair grade.
According to another aspect of the embodiment of the present invention, there is provided a vehicle-mounted sensor position monitoring method applied to a monitoring host in the above vehicle-mounted sensor position monitoring system, the method including:
controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system;
after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments;
and transmitting the variation of the position of the optical fiber sensor to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information.
In an alternative, the method further comprises:
When the variation of the optical signal exceeds a first target variation threshold, determining a deformation grade corresponding to the variation according to a preset warning rule and the variation of the optical signal, wherein the warning rule is used for representing the correspondence between a plurality of different variation thresholds and a plurality of different deformation grades;
and transmitting the deformation grade corresponding to the variation to the alarm so as to trigger the alarm to send out alarm information corresponding to the deformation grade.
In an alternative, the method further comprises:
And determining the position of the optical fiber sensor after the change according to the initial position of the optical fiber sensor and the change amount of the position of the optical fiber sensor.
In an alternative, the method further comprises:
Before the position of the vehicle-mounted sensor is monitored, a light source is controlled to emit light signals to the optical fiber sensor, and whether the optical fiber sensor can normally transmit the light signals is determined according to whether the light signals transmitted by the optical fiber sensor are received or not.
In an alternative, the method further comprises:
When the variation of the optical signal exceeds a second target variation threshold, determining a repair grade corresponding to the variation according to a preset repair grade rule and the variation of the optical signal, wherein the repair rule is used for representing the correspondence between a plurality of different variation thresholds and a plurality of different repair grades;
and transmitting the repair grade corresponding to the variable quantity to the alarm so as to trigger the alarm to send out repair reminding information corresponding to the repair grade.
In an alternative way, the controlling the light source to emit light signals to a fiber optic sensor in the in-vehicle sensor position monitoring system includes:
After a vehicle provided with the vehicle-mounted sensor is started, controlling a light source to emit light signals to the optical fiber sensor;
Or after the vehicle collides, controlling a light source to emit light signals to the optical fiber sensor;
or during the vehicle maintenance, controlling the light source to emit light signals to the optical fiber sensor.
According to the embodiment of the invention, the monitoring host controls the light source to emit the optical signal to the optical fiber sensor, the optical signal is received by the monitoring host after being transmitted by the optical fiber sensor, the monitoring host determines the change amount of the position of the optical fiber sensor through the change amount of the optical signal, and as the relative positions of the optical fiber sensor and the vehicle-mounted sensor are fixed, namely the change amount of the position of the optical fiber sensor can reflect the change amount of the position of the vehicle-mounted sensor, the corresponding warning information is sent out through the warning device, so that a vehicle owner can know whether the position of the vehicle-mounted sensor changes at any time, and the vehicle owner can know the state of an intelligent driving system conveniently.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present invention can be more clearly understood, and the following specific embodiments of the present invention are given for clarity and understanding.
Drawings
The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a schematic layout of an embodiment of an in-vehicle sensor position monitoring system provided by the present invention;
FIG. 2 is a schematic diagram illustrating the structure of an embodiment of the in-vehicle sensor position monitoring system provided by the present invention;
FIG. 3 illustrates a signal conversion schematic of an embodiment of the in-vehicle sensor position monitoring system provided by the present invention;
FIG. 4 is a schematic diagram of a microprocessor of an embodiment of the in-vehicle sensor position monitoring system provided by the present invention;
FIG. 5 is a schematic flow chart of an embodiment of a method for monitoring the position of an on-board sensor according to the present invention;
FIG. 6 is a schematic diagram showing the structure of an embodiment of the in-vehicle sensor position monitoring device provided by the present invention;
Fig. 7 shows a schematic structural diagram of an embodiment of the vehicle-mounted sensor position monitoring device provided by the invention.
Wherein:
11. monitoring a host; 12. an optical fiber sensor;
13-18, a vehicle-mounted sensor, wherein: 13. the system comprises a short wave camera, a long wave camera, a laser radar, a round looking camera, a parallel auxiliary sensor, a millimeter wave radar and a camera module, wherein the short wave camera, the long wave camera, the laser radar, the round looking camera and the camera module are respectively arranged in sequence;
19. An alarm; 21. a laser; 22. a coupler; 23. a first power supply unit; 24. a splitter;
25. a detector, wherein: 31. a photodetector; 32. an integrated circuit;
26. A second power supply unit;
27. a microprocessor, wherein: 41. the device comprises a main control chip 42, a core computing chip 43, a pulse circuit unit 44 and a data acquisition card;
28. And a driving circuit.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
With technological progress, the degree of vehicle intellectualization is higher and higher, and intelligent vehicles are generated. The intelligent vehicle is generally provided with a plurality of vehicle-mounted sensors (such as a laser radar, a camera, a millimeter wave radar and the like), and an intelligent driving system in the intelligent vehicle can acquire corresponding sensor data through the vehicle-mounted sensors and can realize a plurality of intelligent functions such as auxiliary driving functions and the like through processing the sensor data. Thus, the in-vehicle sensor may be regarded as a core component of the intelligent vehicle.
In addition, the accuracy of the acquired sensor data can be influenced by the installation position of the vehicle-mounted sensor on the intelligent vehicle, the performance condition of the intelligent vehicle can be determined by the installation position of the vehicle-mounted sensor, the use safety of the intelligent vehicle can be determined, and even the service life of an intelligent driving system in the intelligent vehicle can be influenced. Therefore, before the intelligent vehicle leaves the factory, it is often necessary to determine the reasonable position of the in-vehicle sensor in the intelligent vehicle and install the in-vehicle sensor in the reasonable position.
However, the position where the on-board sensor is installed sometimes changes during use of the intelligent vehicle. For example, there are cases where the smart vehicle collides, or the smart vehicle often runs on a rough road, or is subjected to an external force impact, or the like, which may cause a change in the position where the in-vehicle sensor is mounted.
Therefore, a scheme capable of monitoring whether the position of the vehicle-mounted sensor changes is needed, so that a user can timely determine whether the position of the vehicle-mounted sensor changes. Aiming at the problem, the application provides a vehicle-mounted sensor position monitoring system and a vehicle-mounted sensor position monitoring method so as to monitor the position of a vehicle-mounted sensor.
FIG. 1 shows a schematic layout of an embodiment of the in-vehicle sensor position monitoring system of the present invention. In this figure, the monitoring host 11, the optical fiber sensor 12, the vehicle-mounted sensors 13-18 and the alarm 19 are included. As shown in fig. 1, the system includes a monitoring host 11, a fiber optic sensor 12, and an alarm 19.
The monitoring host 11 is used for controlling the light source to emit light signals to the optical fiber sensor 12.
The optical fiber sensor 12 is connected with the monitoring host 11, the relative positions of the optical fiber sensor 12 and the vehicle-mounted sensor are fixed, and the optical fiber sensor 12 is used for transmitting corresponding optical signals to the monitoring host 11 after receiving the optical signals.
In this case, when the position of the optical fiber sensor 12 changes, the position of the in-vehicle sensor changes accordingly, and the amount of change in the position of the optical fiber sensor 12 is the same as the amount of change in the position of the in-vehicle sensor.
In the application, the relative position of the optical fiber sensor 12 and the vehicle-mounted sensor (13-18) can be fixed through the arrangement of the optical fiber sensor 12 and the vehicle-mounted sensor. In one arrangement mode, the optical fiber sensors 12 are arranged near the mounting points of the vehicle-mounted sensors (13-18), such as anchoring parts and the like, the clamping points are used for arranging and fixing the optical fiber sensors 12 and are rigidly connected with the mounting points of the vehicle-mounted sensors (13-18), and the mounting positions of the vehicle-mounted sensors (13-18) are changed to cause the clamping points to shift, so that the deformation of the optical fiber sensors 12 is caused, and the relative position fixing of the optical fiber sensors 12 and the vehicle-mounted sensors is realized.
The optical fiber sensor 12 is an optical communication channel passing through each vehicle-mounted sensor (13-18) corresponding to the monitoring system, the monitoring host 11 emits light beams through the optical fiber sensor 12, the light beams return to the monitoring host 11 after passing along the optical communication channel for a circle, when the positions of the vehicle-mounted sensors (13-18) change, the optical fiber sensor 12 is correspondingly deformed, and the different bending degrees of the deformation can lead to different reflection spectrums. In this case, if the position of the optical fiber sensor 12 changes, the optical signals before and after the change are different.
The monitoring host 11 is further configured to determine, after receiving the optical signals transmitted by the optical fiber sensor 12 at different times, a change amount of a position where the optical fiber sensor 12 is located according to the change amounts of the optical signals transmitted at the different times.
Since the optical signals transmitted to the monitoring host 11 are different before and after the position of the optical fiber sensor 12 changes, the monitoring host 11 can determine the change amount of the position of the optical fiber sensor 12 according to the change amount of the optical signals.
Further, since the relative positions of the optical fiber sensor 12 and the in-vehicle sensor are fixed, the amount of change in the position of the optical fiber sensor 12 can be used as the amount of change in the position of the in-vehicle sensor.
The alarm 19 is configured to receive the change amount of the position of the optical fiber sensor 12 transmitted by the monitoring host 11, and send out alarm information according to the change amount.
According to the embodiment of the invention, the monitoring host 11 controls the light source to emit the optical signal to the optical fiber sensor 12, the optical signal is received by the monitoring host 11 after being transmitted by the optical fiber sensor 12, the monitoring host determines the change amount of the position of the optical fiber sensor 12 through the change amount of the optical signal, and as the relative positions of the optical fiber sensor 12 and the vehicle-mounted sensor (13-18) are fixed, namely the change amount of the position of the optical fiber sensor 12 can reflect the change amount of the position of the vehicle-mounted sensor (13-18), the corresponding warning information is sent out through the warning device 19, so that a vehicle owner can be helped to know whether the position of the vehicle-mounted sensor changes at any time, and the vehicle owner can know the state of the intelligent driving system conveniently.
The monitoring host 11 is further configured to determine a deformation level corresponding to the variation of the optical signal according to a preset warning rule and the variation of the optical signal when the variation of the optical signal exceeds a first target variation threshold, and transmit the deformation level to the alarm 19, where the warning rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different deformation levels;
the warning information sent by the warning device 19 includes warning information corresponding to the deformation level.
In the above embodiment, after receiving the warning information, the user can more intuitively determine the position change condition of the vehicle-mounted sensor (13-18) according to the warning information, so as to help the user to make a corresponding decision.
If the warning rule is preset as the corresponding relation between three different variation thresholds and three different deformation levels, the deformation levels are represented by a first level, a second level and a third level, and when the variation of the optical signal meets the condition that the deformation level is the first level, the warning device 19 sends warning information containing the first-level deformation; the warning information corresponding to different deformation grades can be distinguished, if the warning indicator 19 sends out the warning information in a picture display mode, when the deformation grade is the first grade, the picture is displayed in yellow, when the deformation grade is the second grade, the picture is displayed in blue, and when the deformation grade is the third grade, the picture is displayed in red; in addition, the alarm 19 may be provided with a speaker, and when the deformation level is three-level, the alarm is given out through the speaker while the picture is displayed, so as to indicate to the user that the position of the in-vehicle sensor (13-18) is seriously changed. In this case, based on the warning information, the user can make a corresponding decision to check the vehicle, to repair it later or to repair it immediately, etc.
The monitoring host 11 is further configured to determine a changed position of the optical fiber sensor 12 according to an initial position of the optical fiber sensor 12 and a change amount of the position of the optical fiber sensor 12.
In the present application, the initial position of the optical fiber sensor 12 may be stored in the monitoring host 11 in advance, in which case, the monitoring host 11 may further determine the position of the optical fiber sensor 12 after the change by combining the initial position of the optical fiber sensor 12 and the amount of change in the position of the optical fiber sensor 12.
In one possible design of the application, the monitoring host 11 includes a detector 25 and a microprocessor 27;
The detector 25 is configured to convert the optical signal transmitted by the optical fiber sensor 12 into an electrical signal, process the electrical signal, and then send the processed electrical signal to the microprocessor 27, where the process performed on the electrical signal includes at least one of amplification and filtering;
In the above embodiment, by amplifying the electric signal, it is possible to avoid that the electric signal is too weak to be used for determining the amount of change in the position of the optical fiber sensor 12 or that the amount of change in the position of the optical fiber sensor 12 cannot be accurately determined; by filtering the electrical signal, the clutter of the electrical signal can be reduced, and the workload of subsequent electrical signal processing can be reduced when the electrical signal is processed later, thereby improving the accuracy of determining the variation of the position of the optical fiber sensor 12.
The microprocessor 27 is configured to convert the received electrical signal into a corresponding digital signal, and determine the amount of change in the position of the optical fiber sensor 12 and the position of the optical fiber sensor 12 after the change by performing signal demodulation calculation on the digital signal.
The light source is a laser 21, and the detector 25 comprises a photodetector and an integrated circuit;
the photodetector is used for converting the optical signal transmitted by the optical fiber sensor 12 into an electrical signal; the integrated circuit is configured to process the electrical signal and send the processed electrical signal to the microprocessor 27;
The microprocessor 27 includes: the main control chip 41, the core calculation chip 42, the pulse circuit unit 43 and the data acquisition card 44;
The data acquisition card 44 is configured to receive the electrical signal, convert the electrical signal into a digital signal, and send the digital signal to the core computing chip 42;
The core computing chip 42 is configured to receive the digital signal and perform signal demodulation computation, and send a result of the signal demodulation computation to the main control chip 41, and is further configured to send a pulse signal to the pulse circuit unit 43 when the laser 21 is required to transmit an optical signal to the optical fiber sensor 12;
The pulse circuit unit 43 is configured to receive the pulse signal and send a pulse current to the laser 21 to trigger the laser 21 to emit an optical signal to the optical fiber sensor 12;
The main control chip 41 is configured to receive the result of the signal demodulation calculation, determine the position of the optical fiber sensor 12 at the different moments and the change amount of the position according to the result, and send the change amount of the position of the optical fiber sensor 12 to the alarm 19.
The monitoring host 11 is further configured to control the light source to emit an optical signal to the optical fiber sensor 12 before monitoring the position of the vehicle-mounted sensor, and determine whether the optical fiber sensor 12 can normally transmit the optical signal according to whether the optical signal transmitted by the optical fiber sensor 12 is received.
In the above embodiment, the cooperative work of multiple electronic components is implemented by the conversion of the optical signal by the photodetector, the processing of the electrical signal by the integrated circuit, the demodulation calculation of the digital signal by the core computing chip 42, and the determination of the position of the optical fiber sensor 12 at different moments and the variation of the position by the main control chip 41, so that the position of the optical fiber sensor 12 at different moments and the variation of the position can be determined quickly and accurately.
The monitoring host 11 is further configured to determine, when the variation of the optical signal exceeds a second target variation threshold, a repair level corresponding to the variation according to a preset repair level rule and the variation of the optical signal, where the repair rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different repair levels;
The alarm 19 is further configured to receive the repair level transmitted by the monitoring host 11, and send repair reminding information corresponding to the repair level.
In the above embodiment, after receiving the repair reminding information, the user can determine whether the installation position of the vehicle-mounted sensor (13-18) needs to be repaired and the emergency degree of the repair according to the content of the repair reminding information; further embodiments may refer to the deformation level, and issue repair alert information of different alert degrees according to different repair levels.
The warning device 19 comprises a vehicle-mounted host and/or a mobile terminal, and a vehicle owner can check the position change condition of the vehicle-mounted sensor through the vehicle-mounted host, and can also check the position change information of the vehicle-mounted sensor from the mobile terminal remotely through the vehicle account; when the microprocessor 27 monitors abnormality, under the condition that the vehicle-mounted host operates, the vehicle-mounted host pushes alarm prompt information preferentially; and under the condition that the vehicle-mounted host is not operated, the mobile terminal is preferentially used for remotely pushing related information to the vehicle owner.
Fig. 2 shows a schematic structural diagram of an embodiment of the vehicle-mounted sensor position monitoring system provided by the invention. As shown in fig. 2, the monitoring host 11 includes a laser 21, a coupler 22, a splitter 24, a detector 25, a power supply unit, a microprocessor 27, and a driving circuit 28.
The driving circuit 28 is used for meeting the on-off requirement of the laser 21.
The power supply unit includes a first power supply unit 23 and a second power supply unit 26; the first power supply unit 23 and the second power supply unit 26 are the main power supply and the auxiliary power supply of the present embodiment, and are used for satisfying the electric energy required by the operation of the monitoring host 11.
Fig. 3 shows a signal conversion schematic diagram of an embodiment of the vehicle-mounted sensor position monitoring system provided by the invention. As shown in fig. 3, the detector 25 includes a photodetector (AVALANCHE PHOTO DIODE, APD) 31 and an integrated circuit 32. The optical signal received by the monitoring host 11 is converted into an electrical signal by the photodetector 31, the electrical signal is amplified and filtered by the integrated circuit 32 and then sent to the data acquisition card 44, the data acquisition card 44 converts the electrical signal into a digital signal and sends the digital signal to the microprocessor 27, and after the microprocessor 27 performs analysis processing, the change of the position of the optical fiber sensor 12 is obtained and sent to the alarm 19 for the vehicle owner to check.
Fig. 4 is a schematic structural diagram of a microprocessor of an embodiment of the vehicle-mounted sensor position monitoring system provided by the invention. As shown in fig. 4, the microprocessor 27 includes a main control chip 41, a core computing chip 42, a pulse circuit unit 43, and a data acquisition card 44.
The core computing chip 42 performs reflected light wave signal demodulation computation on the digital signal, and outputs the computation result to the main control chip 41. The main control chip 41 can select different systems according to the requirements, and an embedded Linux system is selected in the embodiment.
The main control chip 41 evaluates the position change condition of the vehicle-mounted sensor through the change condition of the optical fiber sensor 12, and compares the calculation result of the demodulation calculation of the reflected light wave signal with a stored target value to diagnose the change amount of the corresponding position, wherein the target value is the initial data of the reflection of the collected light signal after the optical fiber sensor 12 is distributed. The main control chip 41 diagnoses the position change condition of each vehicle-mounted sensor by comparing and analyzing the change amount of the optical signal transmitted by the optical fiber sensor 12 at different moments, and when it is diagnosed that a large deviation exists between the installation position change condition of a certain vehicle-mounted sensor and the target value, it is determined that the position of the vehicle-mounted sensor is abnormal, and then the warning is performed by the warning device 19.
The core calculation chip 42 outputs a pulse signal to the laser 21, and causes the laser 21 to output a pulse laser with a predetermined bandwidth. The specific process is as follows: the core computing chip 42 is programmed to output a predetermined pulse signal, and inputs the pulse signal to the pulse circuit unit 43, and the pulse circuit unit 43 generates a predetermined pulse current, and inputs the pulse current to the laser 21, and the laser 21 generates a pulse laser light of a predetermined bandwidth.
The core computing chip 42 outputs a specified pulse signal to enable the laser 21 to generate pulse laser with a corresponding pulse width, and the precision of the system measurement change is required to be satisfied, the precision can be selected according to actual requirements, and the spatial sampling resolution is required to be satisfied.
The optical fiber sensor 12 is an optical communication channel which corresponds to the monitoring system and passes through each vehicle-mounted sensor (13-18), the monitoring host 11 emits light beams to pass through the optical fiber sensor 12, the light beams pass through the optical communication channel for one circle and then return to the monitoring host 11, before the positions of the vehicle-mounted sensors (13-18) are monitored, the monitoring host 11 analyzes the health condition of the monitoring system according to the condition of optical signals transmitted by the optical fiber sensor 12, evaluates the working reliability of the monitoring system, and monitors the position change of the vehicle-mounted sensors (13-18) after the working reliability of the monitoring system is determined; when the relative position of the vehicle-mounted sensor (13-18) changes, the light reflection condition of the corresponding point is affected, and in the process of monitoring the position change of the vehicle-mounted sensor (13-18), the monitoring host 11 calculates the change quantity of the corresponding position according to the light reflection change conditions at different moments and sends the change quantity to the alarm 19. Meanwhile, the optical fiber sensors 12 are provided with clamping points, such as anchoring parts and the like, near the mounting points of the vehicle-mounted sensors (13-18), the clamping points are used for arranging and fixing the optical fiber sensors 12, the mounting positions of the vehicle-mounted sensors (13-18) are changed to cause displacement of the clamping points, so that deformation of the optical fiber sensors 12 is caused, different reflection spectrums are caused due to different bending degrees of the deformation, the monitoring host 11 analyzes the reflection spectrums at different moments, and the change situation is calculated, wherein the reflection spectrums are the optical signals.
The clamping points are used for fixing the optical fiber sensors, so that pressure is applied to the optical fiber sensors, the refraction and reflection changes are emphasized, the positions of the refraction and reflection changes are corresponding to the positions of the vehicle-mounted sensors, the positions and the variation of the positions of the vehicle-mounted sensors can be monitored by analyzing the light signals for emphasizing the refraction and the reflection, and therefore the light signal changes caused by the position variation of the vehicle-mounted sensors are eliminated.
It should be noted that during assembly of the fiber optic sensor 12, bending should be avoided, the working area should be avoided to be a high temperature, high pressure area, and the internal change damage caused by single point compression should be avoided during installation.
In order to realize the self-monitoring of the system, the reliability of the operation of the monitoring system is evaluated, and when the monitoring host 11 controls the laser 21 to emit optical signals to the optical fiber sensor 12, whether the optical fiber sensor 12 normally transmits the optical signals is determined according to whether the monitoring host 11 receives the optical signals transmitted by the optical fiber sensor 12; if the monitoring host 11 can receive the optical signal transmitted by the optical fiber sensor 12, the optical fiber sensor 12 is normal; if the monitoring host 11 does not receive the optical signal transmitted by the optical fiber sensor 12, the optical fiber sensor 12 is abnormal.
When the optical fiber sensor 12 has a break point, the light passing condition may be damaged, so that the monitoring host 11 cannot receive the optical signal. Therefore, through the scheme, whether the optical fiber sensor 12 can work normally or not can be determined, the self-monitoring of the monitoring system can be realized, and the reliability of the operation of the monitoring system is improved.
In order to solve the problem, when the change amount of the optical fiber sensor exceeds a second target change amount threshold, the embodiment of the invention determines a repair grade corresponding to the change amount according to a preset repair grade rule and the change amount of the optical signal, wherein the repair rule is used for representing the corresponding relation between a plurality of different change amount thresholds and a plurality of different repair grades.
The alarm is used for receiving the change quantity of the position where the optical fiber sensor is located, the changed position, the deformation grade and the repair grade and sending corresponding alarm information.
The vehicle-mounted sensor (13-18) is mainly a signal acquisition unit forming an intelligent driving system, for example, the sensor involved in the embodiment is as follows: short wave camera 13, long wave camera 14, laser radar 15, look around camera 16, auxiliary sensor 17 and millimeter wave radar 18 are drawn together to the parallel line. The vehicle-mounted sensors (13-18) are not limited to the above sensors, and can be increased or decreased according to actual schemes of the intelligent driving system.
Fig. 5 shows a flowchart of an embodiment of the in-vehicle sensor position monitoring method of the present application, which is performed by the monitoring host in the in-vehicle sensor position monitoring system in the above-described embodiment of the present application. As shown in fig. 5, the method comprises the steps of:
step 110: and controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system.
Wherein, control the light source to emit the light signal, including the following three cases:
(case 1) after the vehicle mounted with the in-vehicle sensor is started, for realizing a position condition check of the in-vehicle sensor so as not to cause a position change of the in-vehicle sensor by collision after the vehicle is flameout, thereby causing a malfunction of an intelligent driving system;
(case 2) after the vehicle collides, for determining a state of change in the installation position of the in-vehicle sensor due to the degree of collision;
(case 3) is used to guide repair restoration during the vehicle repair process.
The three conditions can cover the situation of monitoring the position change of most vehicle-mounted sensors, for example, after the vehicle runs on a bumpy road section, the position change of the vehicle-mounted sensors can be monitored by the method described in the condition 1, so that the situation that the vehicle-mounted sensors shift due to bumpiness to influence the driving safety again is avoided.
Of course, in other cases, the monitoring host may also control the light source to emit the optical signal to the optical fiber sensor in the vehicle-mounted sensor position monitoring system, which is not limited by the present application.
Step 120: after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments.
Step 130: and transmitting the variation of the position of the optical fiber sensor to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information.
In the above embodiment, the optical fiber sensor can monitor the position changes of all the vehicle-mounted sensors, and the change amount of the position of the optical fiber sensor can be determined by the change amount of the optical signal, so that the change amount of the position of the vehicle-mounted sensor is determined, and the implementation cost is low.
In one possible design of the application, when the variation of the optical signal exceeds a first target variation threshold, determining a deformation level corresponding to the variation according to a preset warning rule and the variation of the optical signal, wherein the warning rule is used for representing the correspondence between a plurality of different variation thresholds and a plurality of different deformation levels;
and transmitting the deformation grade corresponding to the variation to the alarm so as to trigger the alarm to send out alarm information corresponding to the deformation grade.
In the above embodiment, the warning information corresponding to the deformation level can intuitively convey the offset degree of the vehicle-mounted sensor to the vehicle owner, so that the vehicle owner can judge whether maintenance is needed; if the deformation is set to be the first-level deformation, the second-level deformation and the third-level deformation … … n-level deformation, and the deformation is respectively corresponding to different warning information, the vehicle owner can judge the deformation degree through judging the deformation level, and then judge whether maintenance is needed, the maintenance critical degree and the like.
In one possible design of the present application, when the variation of the optical signal exceeds a second target variation threshold, determining a repair level corresponding to the variation according to a preset repair level rule and the variation of the optical signal, where the repair rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different repair levels;
and transmitting the repair grade corresponding to the variable quantity to the alarm so as to trigger the alarm to send out repair reminding information corresponding to the repair grade.
In the above embodiment, the repair reminding information is used for reminding the user to repair the installation position of the vehicle-mounted sensor, and transmitting the repair critical degree to the user through different repair grades; the setting of the repair class may be made with reference to the deformation class.
In one possible design of the present application, after receiving the optical signals transmitted by the optical fiber sensor at different times, the position of the optical fiber sensor after the change is determined according to the initial position of the optical fiber sensor and the change amount of the position of the optical fiber sensor.
After the position of the optical fiber sensor after the change is determined, the changed position information is transmitted to the alarm, and the alarm sends out corresponding alarm information.
In the above embodiment, the initial position of the optical fiber sensor is pre-stored, and the position of the optical fiber sensor after being changed is obtained through calculation and sent out, so that the user can obtain the position of the optical fiber sensor after being changed, and the user can grasp the position of the vehicle-mounted sensor conveniently, thereby helping the user to make maintenance and other decisions.
In one possible design of the present application, before monitoring the position of the vehicle-mounted sensor, the light source is controlled to emit an optical signal to the optical fiber sensor, and whether the optical fiber sensor can normally transmit the optical signal is determined according to whether the optical signal transmitted by the optical fiber sensor is received.
The warning device comprises a vehicle-mounted host and/or a mobile terminal.
The embodiment of the application can also generate the simulated images of the vehicle and the vehicle-mounted sensor according to the data such as the variable quantity by carrying the image simulation software, and display the simulated images through the vehicle-mounted host and/or the mobile terminal, so that the method is more visual, and can also provide guidance information for maintenance personnel.
The vehicle-mounted sensor position monitoring method in the embodiment of the invention can monitor the position of the vehicle-mounted sensor from time to time, help the vehicle owner know whether the position of the vehicle-mounted sensor changes at any time, and is beneficial to the vehicle owner to know the state of the intelligent driving system; when the local position abnormality or abnormal displacement exceeds a target threshold value, related information is pushed to the vehicle-mounted host computer and/or the mobile terminal, so that a vehicle owner is prompted to check or repair the vehicle, and maintenance personnel can be guided to restore the installation position of the vehicle-mounted sensor.
Fig. 6 shows a schematic structural view of an embodiment of the in-vehicle sensor position monitoring device of the present invention. As shown in fig. 6, the apparatus includes: the device comprises a control module, a determining module and a triggering module;
the control module is used for controlling the light source to emit light signals to the optical fiber sensor in the vehicle-mounted sensor position monitoring system;
The determining module is used for determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments after receiving the optical signals transmitted by the optical fiber sensor at different moments;
The triggering module is used for triggering the alarm to send out alarm information by transmitting the variation of the position of the optical fiber sensor to the alarm in the vehicle-mounted sensor position monitoring system.
The working principle of the vehicle-mounted sensor position monitoring device in the embodiment is as follows: when the optical fiber sensors are installed, fixing points of the optical fiber sensors are arranged near installation points of the vehicle-mounted sensors, the fixing points of the optical fiber sensors are the clamping points, the relative positions of the installation points of the optical fiber sensors and the clamping points are guaranteed to be fixed, the tail ends of the optical fiber sensors are connected to the controller after sequentially passing through the vehicle-mounted sensors, and particularly, a light source emits light signals and the light signals are transmitted to the control module through the optical fiber sensors to form a closed loop; detecting optical signals through the determining module, wherein the refraction and reflection conditions of the optical signals at the changing positions are changed when the mounting points of the local optical fiber sensors are changed due to the collision of vehicles, the refraction and reflection changes are emphasized at the fixing points due to the fact that pressure is applied to the optical fiber sensors, the positions of the vehicle-mounted sensors are corresponding to the refraction and reflection changing emphasized positions, and the position changes and the changing quantity of the vehicle-mounted sensors can be monitored by analyzing the light signals emphasizing the refraction and reflection; and finally, sending out corresponding warning information by the warning device.
The vehicle-mounted sensor position monitoring device in the embodiment has the beneficial effects that: the position of the vehicle-mounted sensor is monitored constantly by reasonably arranging the optical fiber sensor, so that a vehicle owner is helped to know the position condition of the position of the vehicle-mounted sensor at any time; when the local position abnormality or abnormal displacement exceeds the first target variable quantity threshold value and/or the second target variable quantity threshold value, relevant information is pushed to the warning indicator, the vehicle owner is prompted to repair the vehicle, and the maintenance personnel can be guided to restore the installation position of the vehicle-mounted sensor.
The vehicle-mounted sensor position monitoring device in the embodiment can be started according to the actual use environment, and the vehicle runs after the vehicle is started so as to realize the position condition check of the vehicle-mounted sensor, so that the position change of the vehicle-mounted sensor caused by collision after the vehicle is flamed out is avoided, and the intelligent driving system is prevented from being failed; the vehicle-mounted sensor is used for judging the change state of the mounting position of the vehicle-mounted sensor caused by the collision degree; and the maintenance process is operated for guiding maintenance restoration.
FIG. 7 is a schematic structural diagram of an embodiment of the in-vehicle sensor position monitoring device of the present invention, and the specific embodiment of the present invention is not limited to the specific implementation of the in-vehicle sensor position monitoring device.
As shown in fig. 7, the in-vehicle sensor position monitoring apparatus may include: a processor 402, a communication interface (Communications Interface) 404, a memory 406, and a communication bus 408.
Wherein: processor 402, communication interface 404, and memory 406 communicate with each other via communication bus 408. A communication interface 404 for communicating with network elements of other devices, such as clients or other servers. The processor 402 is configured to execute the program 410, and may specifically perform relevant steps in the above-described embodiment of the method for monitoring the position of the vehicle-mounted sensor.
In particular, program 410 may include program code including computer-executable instructions.
The processor 402 may be a central processing unit CPU, or an Application-specific integrated Circuit ASIC (Application SPECIFIC INTEGRATED Circuit), or one or more integrated circuits configured to implement embodiments of the present invention. The one or more processors included in the monitoring device may be the same type of processor, such as one or more CPUs; but may also be different types of processors such as one or more CPUs and one or more ASICs.
Memory 406 for storing programs 410. Memory 406 may comprise high-speed RAM memory or may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
Program 410 may be specifically invoked by processor 402 to cause the monitoring device to:
controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system;
after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments;
and transmitting the variation of the position of the optical fiber sensor to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information.
In an alternative manner, when the control light source transmits an optical signal to the optical fiber sensor in the vehicle-mounted sensor position monitoring system, the following three conditions are included:
After a vehicle provided with the vehicle-mounted sensor is started, controlling a light source to emit light signals to the optical fiber sensor, and checking the position condition of the vehicle-mounted sensor so as to prevent the position change of the vehicle-mounted sensor caused by collision after the vehicle is flameout, thereby causing the fault of an intelligent driving system;
Or after the vehicle collides, controlling a light source to emit light signals to the optical fiber sensor, and judging the change state of the installation position of the vehicle-mounted sensor caused by the collision degree;
Or in the vehicle maintenance process, controlling the light source to emit light signals to the optical fiber sensor for guiding maintenance restoration.
In an alternative mode, the alarm sends out alarm information, which is realized by the vehicle-mounted host computer and/or the mobile terminal.
Under the condition that the vehicle-mounted host operates, sending out warning information preferentially through the vehicle-mounted host;
And under the condition that the vehicle-mounted host is not operated, sending out warning information preferentially through the mobile terminal.
The vehicle-mounted sensor position monitoring equipment in the embodiment of the invention monitors the position of the vehicle-mounted sensor from time to time, so that a vehicle owner can know the change condition of the position of the vehicle-mounted sensor at any time; when the local position abnormality or abnormal displacement exceeds a target threshold, relevant information is pushed to the vehicle owner, the vehicle owner is prompted to repair the vehicle, and maintenance personnel can be guided to restore the installation position of the vehicle-mounted sensor.
The embodiment of the invention provides a computer readable storage medium, which stores at least one executable instruction, and when the executable instruction runs on a vehicle-mounted sensor position monitoring device/apparatus, the monitoring device/apparatus executes the vehicle-mounted sensor position monitoring method in any method embodiment.
The executable instructions may be specifically for causing the in-vehicle sensor position monitoring apparatus/device to:
controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system;
after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments;
and transmitting the variation of the position of the optical fiber sensor to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information.
In an optional manner, when the variation of the optical signal exceeds a first target variation threshold, determining a deformation level corresponding to the variation according to a preset warning rule and the variation of the optical signal, wherein the warning rule is used for representing a corresponding relation between a plurality of different variation thresholds and a plurality of different deformation levels;
and transmitting the deformation grade corresponding to the variation to the alarm so as to trigger the alarm to send out alarm information corresponding to the deformation grade.
In an alternative manner, the position of the optical fiber sensor after the change is determined according to the initial position of the optical fiber sensor and the change amount of the position of the optical fiber sensor.
In an alternative manner, before monitoring the position of the vehicle-mounted sensor, the light source is controlled to emit light signals to the optical fiber sensor, and whether the optical fiber sensor can normally transmit the light signals is determined according to whether the light signals transmitted by the optical fiber sensor are received.
In an optional manner, when the variation of the optical signal exceeds a second target variation threshold, determining a repair grade corresponding to the variation according to a preset repair grade rule and the variation of the optical signal, wherein the repair rule is used for representing a corresponding relation between a plurality of different variation thresholds and a plurality of different repair grades;
and transmitting the repair grade corresponding to the variable quantity to the alarm so as to trigger the alarm to send out repair reminding information corresponding to the repair grade.
In an alternative way, the controlling the light source to emit light signals to a fiber optic sensor in the in-vehicle sensor position monitoring system includes:
After a vehicle provided with the vehicle-mounted sensor is started, controlling a light source to emit light signals to the optical fiber sensor;
Or after the vehicle collides, controlling a light source to emit light signals to the optical fiber sensor;
or during the vehicle maintenance, controlling the light source to emit light signals to the optical fiber sensor.
The vehicle-mounted sensor position monitoring equipment in the embodiment of the invention monitors the position of the vehicle-mounted sensor from time to time, so that a vehicle owner can know the change condition of the position of the vehicle-mounted sensor at any time; when the local position abnormality or abnormal displacement exceeds a target threshold, relevant information is pushed to an owner of the vehicle, the owner is prompted to repair the vehicle, and maintenance personnel can be guided to restore the installation position of the vehicle-mounted sensor.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. In addition, embodiments of the present invention are not directed to any particular programming language.
In the description provided herein, numerous specific details are set forth. It will be appreciated, however, that embodiments of the invention may be practiced without such specific details. Similarly, in the above description of exemplary embodiments of the invention, various features of embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. Wherein the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Except that at least some of such features and/or processes or elements are mutually exclusive.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.
Claims (10)
1. An in-vehicle sensor position monitoring system, comprising: the monitoring system comprises a monitoring host (11), an optical fiber sensor (12) and an alarm (19);
The monitoring host (11) is used for controlling a light source to emit light signals to the optical fiber sensor (12);
The optical fiber sensor (12) is connected with the monitoring host (11), the relative positions of the optical fiber sensor (12) and the vehicle-mounted sensor are fixed, and the optical fiber sensor (12) is used for transmitting corresponding optical signals to the monitoring host (11) after receiving the optical signals;
The monitoring host (11) is further used for determining the change amount of the position of the optical fiber sensor (12) according to the change amount of the optical signals transmitted at different moments after receiving the optical signals transmitted by the optical fiber sensor (12) at different moments;
the monitoring host (11) is further configured to determine a deformation level corresponding to the variation of the optical signal according to a preset warning rule and the variation of the optical signal when the variation of the optical signal exceeds a first target variation threshold, and transmit the deformation level to the warning device (19), where the warning rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different deformation levels;
The warning device (19) is used for receiving the change amount of the position of the optical fiber sensor (12) transmitted by the monitoring host (11) and sending warning information according to the change amount, and the warning information comprises warning information corresponding to the deformation grade.
2. The system according to claim 1, wherein the monitoring host (11) is further configured to determine the position of the optical fiber sensor (12) after the change according to the initial position of the optical fiber sensor (12) and the amount of change in the position of the optical fiber sensor (12).
3. The system according to claim 2, characterized in that the monitoring host (11) comprises a detector (25) and a microprocessor (27);
The detector (25) is configured to convert the optical signal transmitted by the optical fiber sensor (12) into an electrical signal, process the electrical signal, send the processed electrical signal to the microprocessor (27), and perform at least one of amplification and filtering on the electrical signal;
The microprocessor (27) is used for converting the received electric signals into corresponding digital signals, and determining the change amount of the position of the optical fiber sensor (12) and the changed position of the optical fiber sensor (12) by carrying out signal demodulation calculation on the digital signals.
4. The system according to claim 1, wherein the monitoring host (11) is further configured to control the light source to emit a light signal to the optical fiber sensor (12) before monitoring the position of the vehicle-mounted sensor, and to determine whether the optical fiber sensor (12) can normally transmit the light signal according to whether the light signal transmitted by the optical fiber sensor (12) is received.
5. The system according to claim 1, wherein the monitoring host (11) is further configured to, when the variation of the optical signal exceeds a second target variation threshold, determine a repair level corresponding to the variation according to a preset repair level rule and the variation of the optical signal, where the repair level rule is used to represent a correspondence between a plurality of different variation thresholds and a plurality of different repair levels;
the alarm (19) is further used for receiving the repair grade transmitted by the monitoring host (11) and sending repair reminding information corresponding to the repair grade.
6. A method for monitoring the position of an in-vehicle sensor, which is applied to a monitoring host in the in-vehicle sensor position monitoring system according to any one of claims 1 to 5, the method comprising:
controlling a light source to emit light signals to an optical fiber sensor in the vehicle-mounted sensor position monitoring system;
after receiving the optical signals transmitted by the optical fiber sensor at different moments, determining the variation of the position of the optical fiber sensor according to the variation of the optical signals transmitted at different moments;
when the variation of the optical fiber sensor exceeds a first target variation threshold, determining a deformation grade corresponding to the variation according to a preset warning rule and the variation of the optical signal, wherein the warning rule is used for representing the correspondence between a plurality of different variation thresholds and a plurality of different deformation grades;
And transmitting the variation of the position of the optical fiber sensor and the deformation grade corresponding to the variation to an alarm in the vehicle-mounted sensor position monitoring system, and triggering the alarm to send out alarm information corresponding to the deformation grade.
7. The method of claim 6, further comprising:
And determining the position of the optical fiber sensor after the change according to the initial position of the optical fiber sensor and the change amount of the position of the optical fiber sensor.
8. The method of claim 6, further comprising:
Before the position of the vehicle-mounted sensor is monitored, a light source is controlled to emit light signals to the optical fiber sensor, and whether the optical fiber sensor can normally transmit the light signals is determined according to whether the light signals transmitted by the optical fiber sensor are received or not.
9. The method of claim 6, further comprising:
When the variation of the optical fiber sensor exceeds a second target variation threshold, determining a repair grade corresponding to the variation according to a preset repair grade rule and the variation of the optical signal, wherein the repair grade rule is used for representing the corresponding relation between a plurality of different variation thresholds and a plurality of different repair grades;
and transmitting the repair grade corresponding to the variable quantity to the alarm so as to trigger the alarm to send out repair reminding information corresponding to the repair grade.
10. The method of claim 6, the controlling the light source to emit light signals to a fiber optic sensor in the in-vehicle sensor position monitoring system, comprising:
After a vehicle provided with the vehicle-mounted sensor is started, controlling a light source to emit light signals to the optical fiber sensor;
Or after the vehicle collides, controlling a light source to emit light signals to the optical fiber sensor;
or during the vehicle maintenance, controlling the light source to emit light signals to the optical fiber sensor.
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