CN116778726B - Monitoring management system based on displacement measurement and speed measurement - Google Patents
Monitoring management system based on displacement measurement and speed measurement Download PDFInfo
- Publication number
- CN116778726B CN116778726B CN202311034084.6A CN202311034084A CN116778726B CN 116778726 B CN116778726 B CN 116778726B CN 202311034084 A CN202311034084 A CN 202311034084A CN 116778726 B CN116778726 B CN 116778726B
- Authority
- CN
- China
- Prior art keywords
- motor vehicle
- annular pressure
- acceleration
- pressure sensor
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 55
- 238000005259 measurement Methods 0.000 title claims abstract description 45
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 17
- 230000001133 acceleration Effects 0.000 claims abstract description 66
- 230000003287 optical effect Effects 0.000 claims description 20
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 206010039203 Road traffic accident Diseases 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention discloses a monitoring management system based on displacement measurement and speed measurement, which relates to the technical field of displacement measurement and speed measurement, and comprises a control mechanism and an intelligent monitoring mechanism, wherein the intelligent monitoring mechanism is arranged on the roof of a motor vehicle and comprises an acceleration monitoring unit, a satellite positioning unit, a controller and a wireless signal transceiver, the acceleration monitoring unit is used for monitoring the acceleration of the motor vehicle, the controller is used for measuring and calculating the whole vehicle running speed of the motor vehicle according to the acceleration and the initial speed of the motor vehicle, the acceleration monitoring unit and the satellite positioning unit are respectively and electrically connected with the controller, the controller is in signal connection with the control mechanism through the wireless signal transceiver, when the control mechanism receives overspeed information of the motor vehicle, the real-time position of the motor vehicle is tracked according to the satellite positioning unit, the initial distance and the final distance of the overspeed time period of the motor vehicle from the starting point of a highway are measured and calculated, and the spatial range of the overspeed of the motor vehicle is determined based on the initial distance.
Description
Technical Field
The invention relates to the technical field of displacement measurement and speed measurement, in particular to a monitoring management system based on displacement measurement and speed measurement.
Background
The measurement of the speed of the vehicles on the expressway is not only related to the effective management of the vehicles on the expressway, but also related to the life and property safety of people. The existing speed measuring modes of the expressway vehicle are as follows:
1. single point speed measurement: the single-point speed measurement is commonly called as an 'electronic eye', and the speed measurement point is very common on highways, and is frequently used for measuring the speed by using a high-definition camera when a vehicle passes through, and overspeed behaviors are immediately photographed on urban roads and rural roads. Such a speed measurement point is relatively fixed and often occurs near a speed limit sign.
2. Interval speed measurement: the interval speed measurement is more complex in equipment than the single-point speed measurement. The time of the start point of the test of the vehicle entering the interval is needed to be passed, the time of the end point of the speed measurement of the vehicle exiting the interval is recorded, and the average passing speed can be accurately obtained by dividing the length of the speed measurement distance by the time spent.
3. Flow speed measurement: the flow speed measurement actually also belongs to one of fixed-point speed measurement, and the difference is that the flow speed measurement is more flexible, and traffic police departments set temporary speed measurement equipment to measure and monitor road vehicles through setting the flow speed measurement points on different road segments.
With respect to the instruments used for speed measurement, generally they comprise: radar velocimeters, video velocimeters, laser velocimeters, and the like.
In summary, the management department of the expressway cannot control the speed condition of the motor vehicle on the expressway in the whole process at present, the problem of difficulty in evidence obtaining exists when accident problems occur, the intervention cannot be performed in time when the vehicle is overspeed or in fault or accident occurs, and intelligent overall management cannot be realized for the running condition of the motor vehicle on the expressway, so that improvement is necessary for the prior art.
Disclosure of Invention
The invention provides a monitoring management system based on displacement measurement and speed measurement, which aims to monitor the running speed of a motor vehicle on a highway in the whole process and realize intelligent overall management.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a monitoring management system based on displacement measurement and speed measurement, includes control mechanism, intelligent monitoring mechanism install the motor vehicle roof that traveles on the highway, intelligent monitoring mechanism include acceleration monitoring unit, satellite positioning unit, controller, wireless signal transceiver, acceleration monitoring unit be used for monitoring the acceleration of motor vehicle, the controller calculate the whole vehicle speed of motor vehicle according to acceleration and initial speed of motor vehicle, acceleration monitoring unit, satellite positioning unit be connected with the controller electricity respectively, the controller pass through wireless signal transceiver and control mechanism signal connection, control mechanism when receiving motor vehicle overspeed information, follow the real-time position of motor vehicle according to satellite positioning unit to in the overspeed time period, initial distance and the termination distance of motor vehicle position distance highway start point, and confirm the space scope that motor vehicle overspeed is located based on this.
Preferably, the initial distance and the final distance are measured along the trend of the expressway, and the space range refers to the expressway interval between a certain satellite positioning coordinate point and another satellite positioning coordinate point on the expressway.
Preferably, the expressway is provided with a speed measuring device for measuring the initial speed of the motor vehicle on the expressway, and the speed measuring device is arranged in a range of 100-200 m away from the starting point of the expressway.
Preferably, the acceleration monitoring unit includes first fixed plate and the second fixed plate of relative setting, first fixed plate, second fixed plate between fixedly connected with optical axis, optical axis on sliding connection have linear bearing, optical axis both ends cover respectively be equipped with first annular pressure sensor, second annular pressure sensor, linear bearing outer wall's both ends respectively fixedly connected with first annular pressure sleeve, second annular pressure sleeve, first annular pressure sleeve and second annular pressure sleeve symmetric distribution in linear bearing's both ends and cover establish outside the optical axis, the outside end of first annular pressure sleeve and second annular pressure sleeve respectively with relative first annular pressure sensor or second annular pressure sensor under initial state, initial state refer to acceleration monitoring unit in the horizontal gesture and motor vehicle acceleration is 0.
Preferably, the acceleration monitoring unit overcoat be equipped with the protecting crust, protecting crust bottom fixedly connected with bottom plate, the bottom plate upper surface be equipped with inclination sensor, the four corners fixedly connected with of bottom plate lower surface adjustable height supporting legs, adjustable height supporting foot bottom be equipped with the connecting plate, connecting plate and motor vehicle roof fixed connection, first fixed plate and second fixed plate bottom and bottom plate upper surface fixed connection, bottom plate upper surface, the axis of optical axis respectively with motor vehicle wheel bottom place plane parallel.
Preferably, the inclination sensor is used for detecting the inclination of the motor vehicle ascending or descending, and the controller calculates the pressure value A applied to the first annular pressure sensor or the second annular pressure sensor by the end part of the first annular pressure sleeve or the second annular pressure sleeve in the inclination state according to the inclination information, the linear bearing, the mass of the first annular pressure sleeve and the mass of the second annular pressure sleeve, and corrects the acceleration data of the motor vehicle based on the pressure value A.
Preferably, the top end of the protecting shell is respectively provided with a controller, a wireless signal transceiver and a satellite positioning unit, the controller is electrically connected with a vehicle-mounted power supply, when the motor vehicle accelerates along the running direction far away from the second annular pressure sensor, the second annular pressure sensor detects a pressure value B, the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve which are integrally connected are recorded as inertial components, the inertial force of the inertial components is recorded as F when the motor vehicle accelerates, when the motor vehicle accelerates in a horizontal running mode, the inertial force F is equal to the pressure value B under the condition of neglecting the friction force between the linear bearing and an optical axis, and according to the calculation formula F=ma of the inertial force, the total mass m of the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve is known to be C, and the total mass m of the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve is calculated to be obtained: a=f/m=b/C.
Preferably, when the motor vehicle runs uphill in an accelerating way, the inertiase:Sub>A force f=b-ase:Sub>A, wherein the pressure value ase:Sub>A is ase:Sub>A pressure value of the inertiase:Sub>A component acting on the second annular pressure sensor according to the self mass and the inclination angle, and B is ase:Sub>A pressure value detected by the second annular pressure sensor; when the motor vehicle runs down ase:Sub>A slope in ase:Sub>A decelerating manner, the inertiase:Sub>A force f=b-ase:Sub>A, wherein the pressure value ase:Sub>A is ase:Sub>A pressure value of the inertiase:Sub>A member acting on the first annular pressure sensor according to the self mass and the inclination angle, and B is ase:Sub>A pressure value detected by the first annular pressure sensor.
Preferably, in the case of a horizontal deceleration of the motor vehicle, the first annular pressure sensor detects a pressure value B, the acceleration a=f/m=b/C of the motor vehicle.
Preferably, the controller groups data of the first annular pressure sensor and the second annular pressure sensor, the data set of the first annular pressure sensor represents pressure data in a deceleration state and the data set of the second annular pressure sensor represents pressure data in an acceleration state in the running process of the vehicle in a direction far away from the second annular pressure sensor, the first annular pressure sensor is arranged on one side close to the vehicle head, and the second annular pressure sensor is arranged on one side towards the vehicle tail.
Preferably, the control mechanism judges the abnormal running of the motor vehicle through a preset program, and the judging method comprises the following steps: judging that the motor vehicle is in a sudden braking state according to negative acceleration a1 in a certain value M of the motor vehicle, judging that the motor vehicle is in a collision accident state and is accelerated and displaced due to collision according to negative acceleration a1 in the certain value M and positive acceleration a2 in a certain value P, wherein the certain value M is determined according to a value range of the negative acceleration a1 in the sudden braking state of the motor vehicle, which is experimentally measured and calculated, and the certain value P is determined according to an acceleration value range in the process of experimentally measuring and calculating the displacement of the motor vehicle due to collision.
Preferably, the control mechanism determines that a plurality of vehicles are abnormal in running in the same time period according to satellite positioning signals, if the vehicles are abnormal in running, the control mechanism prompts that the vehicles are in a high probability, monitors whether the abnormal running vehicles continue to move by tracking the satellite positioning units of the vehicles, and determines that the vehicles are in traffic accidents when all or part of the abnormal running vehicles are not moved any more, and informs expressway management staff of organizing emergency rescue.
Preferably, the control mechanism calculates the whole-course running speed condition of the motor vehicle according to the measured initial speed and the measured acceleration of the motor vehicle, draws a running speed curve, judges the space range of overspeed running, and informs highway management personnel of the overspeed running information to cooperate with the relevant parts for management.
Preferably, the intelligent monitoring mechanism is further provided with a loudspeaker, the loudspeaker is arranged in a cab of the motor vehicle and is electrically connected with the controller through a wire, and when the control mechanism finds that the motor vehicle is in overspeed running, the driver is warned and stopped through the loudspeaker in time.
The monitoring management system based on displacement measurement and speed measurement has the following beneficial effects:
the invention realizes the implementation monitoring of the speed of the motor vehicle on the expressway, realizes the whole-course intelligent control of the running speed of the motor vehicle based on the speed, is favorable for timely processing traffic accidents, distinguishing accident responsibility and accurately following the responsibility of the driving vehicle on the overspeed running, thereby improving the safety management effect of the expressway.
Drawings
FIG. 1 is a schematic top view of the intelligent monitoring mechanism of the present invention (mounted on the roof of a motor vehicle);
FIG. 2 is a schematic diagram of the front view of the intelligent monitoring mechanism of the present invention (with the protective housing broken away);
FIG. 3 is a cross-sectional structural view of the acceleration monitoring unit of the present invention;
1: motor vehicle, 2: bottom plate, 3: protective shell, 4: controller, 5: wireless signal transceiver, 6: height-adjustable supporting legs, 7: connecting plate, 8: first fixed plate, 9: second fixed plate, 10: linear bearing, 11: first annular press sleeve, 12: first annular pressure sensor, 13: second annular press sleeve, 14: second annular pressure sensor, 15: an optical axis.
It should be noted that: the drawings are schematic, and the size proportion among the structures of the invention is not understood by the proportional relation drawn in the drawings, and the actual size proportion is set according to the needs.
Detailed Description
The following detailed description of the embodiments of the present invention in a stepwise manner is provided merely as a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that, the positional or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, and specific orientation configuration and operation, and thus should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-3:
the utility model provides a monitoring management system based on displacement measurement and speed measurement, includes control mechanism, intelligent monitoring mechanism install the motor vehicle roof that traveles on the highway, intelligent monitoring mechanism include acceleration monitoring unit, satellite positioning unit, controller, wireless signal transceiver, acceleration monitoring unit be used for monitoring the acceleration of motor vehicle, the controller calculate the whole speed of going of motor vehicle according to the acceleration and the initial speed of motor vehicle, control mechanism can install the safety control center on the highway, and intelligent monitoring mechanism can be unified to install the roof at every motor vehicle. Because the motor vehicle runs in three modes of acceleration, deceleration and uniform speed, the real-time driving speed of the motor vehicle can be tracked and calculated in a full range by combining the initial speed with the acceleration data. Because the motor vehicle has two states of parking and collision, a satellite positioning unit is arranged, and the parking or collision state can be judged by combining the speed information of the motor vehicle through the satellite positioning unit.
In the invention, the acceleration monitoring unit and the satellite positioning unit are respectively and electrically connected with a controller, the controller is in signal connection with a control mechanism through a wireless signal receiving and transmitting device, and the control mechanism can receive all information acquired or calculated by the controller; when the control mechanism receives overspeed information of the motor vehicle, tracking the real-time position of the motor vehicle according to the satellite positioning unit, measuring and calculating the initial distance and the final distance of the position of the motor vehicle from the starting point of the expressway in the overspeed time period, and determining the space range of overspeed of the motor vehicle based on the initial distance and the final distance. The initial distance is the distance from the position just starting overspeed to the starting point of the expressway, and the final distance is the distance from the starting point of the expressway after overspeed is finished.
In a preferred scheme, the initial distance and the termination distance are measured along the trend of the expressway, and the space range refers to the expressway interval between a certain satellite positioning coordinate point and another satellite positioning coordinate point on the expressway. I.e. the measured distance is referenced to the highway itself, and the spatial range is also a certain section of the highway. Through the arrangement, the overspeed of the motor vehicle can be identified, and the whole overspeed process is monitored.
It is necessary here that the highway is provided with a speed measuring device for measuring the initial speed of the motor vehicle on the highway, which is installed in a range of 100-200 meters from the start of the highway. Namely, the motor vehicle is in a constant-speed running state at 100-200 m after entering a highway, and the motor vehicle is used as an initial speed. If the speed is not uniform, but rather in the acceleration phase, a speed can also be measured as the initial speed, and the driving speed can then be calculated from the acceleration data.
Example 2
Based on example 1, this example discloses:
as shown in fig. 1-3, the acceleration monitoring unit includes a first fixing plate 8 and a second fixing plate 9 that are oppositely disposed, an optical axis 15 is fixedly connected between the first fixing plate 8 and the second fixing plate 9, a linear bearing 10 is slidably connected on the optical axis 15, a first annular pressure sensor 12 and a second annular pressure sensor 14 are respectively sleeved at two ends of the optical axis 15, a first annular pressure sleeve 11 and a second annular pressure sleeve 13 are respectively fixedly connected at two ends of an outer wall of the linear bearing 10, the first annular pressure sleeve 11 and the second annular pressure sleeve 13 are symmetrically distributed at two ends of the linear bearing 10 and sleeved outside the optical axis 15, outer ends of the first annular pressure sleeve 11 and the second annular pressure sleeve 13 are respectively in non-pressure contact with the first annular pressure sensor 12 or the second annular pressure sensor 14 which are opposite in an initial state, and the initial state refers to that the acceleration monitoring unit is in a horizontal posture and the acceleration of a motor vehicle is 0.
As shown in fig. 1-3, the acceleration monitoring unit is sleeved with a protecting shell 3, the bottom end of the protecting shell 3 is fixedly connected with a bottom plate 2, an inclination sensor (not shown in the drawing) is arranged on the upper surface of the bottom plate 2, four corners of the lower surface of the bottom plate 2 are fixedly connected with adjustable supporting feet 6, the bottom end of the adjustable supporting feet is provided with a connecting plate 7, the connecting plate 7 is fixedly connected with the roof of the motor vehicle 1, the bottom ends of the first fixing plate 8 and the second fixing plate 9 are fixedly connected with the upper surface of the bottom plate 2, and the axes of the upper surface and an optical axis 15 of the bottom plate 2 are respectively parallel to the plane where the bottom ends of wheels of the motor vehicle 1 are located. The shape of the connecting plate can be manufactured according to the shape of the roof of the motor vehicle, and the bottom plate and the optical axis are parallel to planes of the bottom ends of a plurality of wheels of the motor vehicle through the adjustment of the height-adjustable supporting legs, so that the direction of the detected acceleration is matched with the running direction of the motor vehicle.
Example 3
Based on example 2, this example discloses:
as shown in fig. 1-3, the tilt sensor is used to detect the tilt angle of the motor vehicle 1 when it is ascending or descending, and the controller 4 calculates the pressure value a applied to the first annular pressure sensor 12 or the second annular pressure sensor 14 by the end of the first annular pressure sleeve or the second annular pressure sleeve in the tilt angle state according to the tilt angle information, the mass of the linear bearing 10, the first annular pressure sleeve 11 and the second annular pressure sleeve 13, and corrects the acceleration data of the motor vehicle based on the pressure value a. That is, the pressure value detected by the first annular pressure sensor 12 or the second annular pressure sensor 14 includes the pressure value a, and the pressure value a should be subtracted to reflect the real inertial force data.
Example 4
Based on example 3, this example discloses:
as shown in fig. 1-3, the top end of the protecting shell 3 is respectively provided with a controller 4, a wireless signal transceiver 5 and a satellite positioning unit (not shown in the drawings), the controller 4 is electrically connected with a vehicle-mounted power supply, when the vehicle 1 accelerates along a running direction far away from the second annular pressure sensor, the second annular pressure sensor 14 detects a pressure value B, the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve which are integrally connected are recorded as inertial components, the inertial force of the inertial components is recorded as F when the vehicle accelerates, when the vehicle accelerates horizontally, the inertial force F is equal to the pressure value B under the condition of neglecting the friction force between the linear bearing and an optical axis, and according to a calculation formula f=ma of the inertial force, the total mass m of the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve is known as C, and the total mass m of the three is calculated as: a=f/m=b/C.
As shown in fig. 1 to 3, when the motor vehicle 1 is traveling uphill, the inertial force f=b-ase:Sub>A, wherein the pressure value ase:Sub>A is ase:Sub>A pressure value of the inertial member acting on the second annular pressure sensor 14 according to its own mass and inclination, and B is ase:Sub>A pressure value detected by the second annular pressure sensor; when the motor vehicle is traveling down ase:Sub>A slope with deceleration, the inertial force f=b-ase:Sub>A, where the pressure value ase:Sub>A is ase:Sub>A pressure value that the inertial member acts on the first annular pressure sensor 12 according to its own mass and inclination, and B is ase:Sub>A pressure value detected by the first annular pressure sensor 12.
The present embodiment considers three factors of the horizontal acceleration running, the uphill acceleration running, and the downhill deceleration running of the motor vehicle, and in the case of the horizontal deceleration running, the first annular pressure sensor 12 detects the pressure value B, and the acceleration a=f/m=b/C of the motor vehicle. The controller groups the data of the first annular pressure sensor and the second annular pressure sensor, and the data set of the first annular pressure sensor represents the pressure data in a decelerating state and the data set of the second annular pressure sensor represents the pressure data in an accelerating state in the driving process in the direction away from the second annular pressure sensor. Typically, a first annular pressure sensor is disposed on a side closer to the vehicle head and a second annular pressure sensor is disposed on a side toward the vehicle tail.
Example 5
Based on example 4, this example discloses:
as shown in fig. 1 to 3, the control mechanism judges that the motor vehicle runs abnormally by a preset program, and the judging method is as follows: judging that the motor vehicle is in a sudden braking state according to negative acceleration a1 in a certain value M of the motor vehicle, judging that the motor vehicle is in a collision accident state and is accelerated and displaced due to collision according to negative acceleration a1 in the certain value M and positive acceleration a2 in a certain value P, wherein the certain value M is determined according to a value range of the negative acceleration a1 in the sudden braking state of the motor vehicle, which is experimentally measured and calculated, and the certain value P is determined according to an acceleration value range in the process of experimentally measuring and calculating the displacement of the motor vehicle due to collision.
As shown in fig. 1-3, the control mechanism determines that a plurality of vehicles are abnormal in running in the same time period and near the same expressway position according to satellite positioning signals, so that a high probability of occurrence of vehicle accidents is prompted, monitors whether the abnormal running vehicles continue to move by tracking satellite positioning units of the vehicles, determines that the vehicles are traffic accidents when all or part of the abnormal running vehicles do not move any more, and informs expressway management staff of organizing emergency rescue.
Example 6
Based on example 5, this example discloses:
as shown in fig. 1-3, the control mechanism calculates the whole travel speed of the motor vehicle according to the measured initial speed and acceleration of the motor vehicle, draws a travel speed curve, determines the space range of overspeed travel, and informs highway management personnel of the overspeed travel information to cooperate with the relevant part for management.
As shown in fig. 1-3, the intelligent monitoring mechanism is further provided with a speaker (not shown in the drawings), the speaker is arranged in the cab of the motor vehicle 1 and is electrically connected with the controller 4 through a wire, and the control mechanism warns and stops the driver in time through the speaker when finding that the motor vehicle is running at overspeed.
The invention realizes the implementation monitoring of the speed of the motor vehicle on the expressway through the arrangement, realizes the whole-course intelligent control of the running speed of the motor vehicle based on the implementation monitoring, is favorable for timely processing traffic accidents, distinguishing accident responsibility and accurately tracking the driving vehicle running at overspeed, thereby improving the safety management effect of the expressway.
Claims (4)
1. A monitoring management system based on displacement measurement and speed measurement is characterized in that: the intelligent monitoring mechanism is arranged on the roof of the motor vehicle running on the expressway;
the intelligent monitoring mechanism comprises an acceleration monitoring unit, a satellite positioning unit, a controller and a wireless signal receiving and transmitting device, wherein the acceleration monitoring unit is used for monitoring the acceleration of the motor vehicle, and the controller measures and calculates the whole-course vehicle speed of the motor vehicle according to the acceleration and the initial speed of the motor vehicle;
the acceleration monitoring unit and the satellite positioning unit are respectively and electrically connected with the controller, and the controller is in signal connection with the control mechanism through the wireless signal transceiver;
when the control mechanism receives overspeed information of the motor vehicle, tracking the real-time position of the motor vehicle according to the satellite positioning unit, measuring and calculating the initial distance and the termination distance of the position of the motor vehicle from the starting point of the expressway in the overspeed time period, and determining the space range of overspeed of the motor vehicle based on the initial distance and the termination distance;
the initial distance and the termination distance are measured along the trend of the expressway;
the space range refers to a highway section between a certain satellite positioning coordinate point and another satellite positioning coordinate point on the highway;
the expressway is provided with a speed measuring device for measuring the initial speed of the motor vehicle on the expressway, and the speed measuring device is arranged in a range of 100-200 meters away from the starting point of the expressway;
the acceleration monitoring unit comprises a first fixed plate and a second fixed plate which are oppositely arranged, an optical axis is fixedly connected between the first fixed plate and the second fixed plate, a linear bearing is connected on the optical axis in a sliding manner, and a first annular pressure sensor and a second annular pressure sensor are respectively sleeved at two ends of the optical axis;
the two ends of the outer wall of the linear bearing are fixedly connected with a first annular pressing sleeve and a second annular pressing sleeve respectively, and the first annular pressing sleeve and the second annular pressing sleeve are symmetrically distributed at the two ends of the linear bearing and sleeved outside the optical axis;
the outer side ends of the first annular pressure sleeve and the second annular pressure sleeve are respectively in non-pressure contact with the first annular pressure sensor or the second annular pressure sensor which are opposite in an initial state, wherein the initial state refers to that the acceleration monitoring unit is in a horizontal posture and the acceleration of the motor vehicle is 0;
the acceleration monitoring unit is sleeved with a protective shell, the bottom end of the protective shell is fixedly connected with a bottom plate, the upper surface of the bottom plate is provided with an inclination sensor, four corners of the lower surface of the bottom plate are fixedly connected with height-adjustable supporting feet, and the bottom end of the height-adjustable supporting foot is provided with a connecting plate;
the connecting plate is fixedly connected with the roof of the motor vehicle, the bottom ends of the first fixing plate and the second fixing plate are fixedly connected with the upper surface of the bottom plate, and the axes of the upper surface of the bottom plate and the optical axis are respectively parallel to the plane where the bottom ends of the wheels of the motor vehicle are positioned;
the controller calculates a pressure value A applied to the first annular pressure sensor or the second annular pressure sensor by the end part of the first annular pressure sleeve or the second annular pressure sleeve in the inclination angle state according to the inclination angle information, the linear bearing, the mass of the first annular pressure sleeve and the mass of the second annular pressure sleeve, and corrects acceleration data of the motor vehicle based on the pressure value A;
the top end of the protective shell is respectively provided with a controller, a wireless signal transceiver and a satellite positioning unit;
the controller is electrically connected with the vehicle-mounted power supply, when the motor vehicle accelerates along the running direction far away from the second annular pressure sensor, the second annular pressure sensor detects a pressure value B, the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve which are integrally connected are recorded as inertia components, the inertia force of the inertia components is recorded as F when the motor vehicle accelerates, when the motor vehicle accelerates in a horizontal running mode, the inertia force F is equal to the pressure value B under the condition that the friction force between the linear bearing and the optical axis is ignored, according to the calculation formula F=ma of the inertia force, the total mass m of the linear bearing, the first annular pressure sleeve and the second annular pressure sleeve is known to be C, and the calculation can be obtained: a=f/m=b/C;
when the motor vehicle runs uphill in an accelerating way, the inertiase:Sub>A force F=B-A, wherein the pressure value A is ase:Sub>A pressure value of the inertiase:Sub>A component acting on the second annular pressure sensor according to the self mass and the inclination angle, and B is ase:Sub>A pressure value detected by the second annular pressure sensor; when the motor vehicle runs down ase:Sub>A slope in ase:Sub>A decelerating way, the inertiase:Sub>A force F=B-A, wherein the pressure value A is ase:Sub>A pressure value of the inertiase:Sub>A component acting on the first annular pressure sensor according to the self mass and the inclination angle, and B is ase:Sub>A pressure value detected by the first annular pressure sensor;
in the case of a horizontal deceleration running of the motor vehicle, the first annular pressure sensor detects a pressure value B, the acceleration a=f/m=b/C of the motor vehicle;
the controller groups the data of the first annular pressure sensor and the second annular pressure sensor, and the controller is used for driving in the direction away from the second annular pressure sensor;
the data set of the first annular pressure sensor represents the pressure data in a deceleration state, the data set of the second annular pressure sensor represents the pressure data in an acceleration state, the first annular pressure sensor is arranged on one side close to the vehicle head, and the second annular pressure sensor is arranged on one side towards the vehicle tail;
the control mechanism judges the abnormal running of the motor vehicle through a preset program, and the judging method comprises the following steps:
judging that the motor vehicle is in a sudden braking state according to negative acceleration a1 in a certain value M of the motor vehicle, judging that the motor vehicle is in a collision accident state and is accelerated and displaced due to collision according to negative acceleration a1 in the certain value M and positive acceleration a2 in a certain value P, wherein the certain value M is determined according to a value range of the negative acceleration a1 in the sudden braking state of the motor vehicle, which is experimentally measured and calculated, and the certain value P is determined according to an acceleration value range in the process of experimentally measuring and calculating the displacement of the motor vehicle due to collision.
2. A displacement measurement and velocity measurement based monitoring management system according to claim 1, wherein: the control mechanism judges that a plurality of vehicles are abnormal in running in the same time period according to satellite positioning signals, the vehicles are prompted to have a high probability of occurrence of vehicle accidents, satellite positioning units of all vehicles are tracked to monitor whether the vehicles with abnormal running continue to move, and when all or part of vehicles with abnormal running do not move any more, the vehicles are judged to be traffic accidents, and expressway management staff is informed of organizing emergency rescue.
3. A monitoring and management system based on displacement measurement and velocity measurement as claimed in claim 2, wherein: the control mechanism calculates the whole-course running speed condition of the motor vehicle according to the measured initial speed and acceleration of the motor vehicle, draws a running speed curve, judges the space range of overspeed running, and informs highway management personnel of the overspeed running information to cooperate with the relevant part for management.
4. A monitoring and management system based on displacement measurement and velocity measurement as claimed in claim 3, wherein: the intelligent monitoring mechanism is also provided with a loudspeaker, the loudspeaker is arranged in the cab of the motor vehicle and is electrically connected with the controller through a wire, and the control mechanism warns and stops the driver in time through the loudspeaker when finding that the motor vehicle runs at overspeed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311034084.6A CN116778726B (en) | 2023-08-17 | 2023-08-17 | Monitoring management system based on displacement measurement and speed measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311034084.6A CN116778726B (en) | 2023-08-17 | 2023-08-17 | Monitoring management system based on displacement measurement and speed measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116778726A CN116778726A (en) | 2023-09-19 |
| CN116778726B true CN116778726B (en) | 2023-10-31 |
Family
ID=87986141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311034084.6A Active CN116778726B (en) | 2023-08-17 | 2023-08-17 | Monitoring management system based on displacement measurement and speed measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116778726B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522946A (en) * | 2013-09-18 | 2014-01-22 | 江苏安嘉尔智能科技有限公司 | Vehicle-mounted vehicle speed monitoring alarming device |
| CN104554260A (en) * | 2013-10-10 | 2015-04-29 | 现代自动车株式会社 | Apparatus for controlling speed in speed enforcement section and method thereof |
| WO2018018306A1 (en) * | 2016-07-24 | 2018-02-01 | 张鹏华 | Method for measuring speed of highway, and speed measurement system |
| CN207799717U (en) * | 2017-12-29 | 2018-08-31 | 广州市中海达测绘仪器有限公司 | IC card with high-precision positioning function and the monitoring system based on IC card |
| CN110667580A (en) * | 2019-11-19 | 2020-01-10 | 常州机电职业技术学院 | Overspeed and speed limiting prevention control device and method for automobile |
-
2023
- 2023-08-17 CN CN202311034084.6A patent/CN116778726B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522946A (en) * | 2013-09-18 | 2014-01-22 | 江苏安嘉尔智能科技有限公司 | Vehicle-mounted vehicle speed monitoring alarming device |
| CN104554260A (en) * | 2013-10-10 | 2015-04-29 | 现代自动车株式会社 | Apparatus for controlling speed in speed enforcement section and method thereof |
| WO2018018306A1 (en) * | 2016-07-24 | 2018-02-01 | 张鹏华 | Method for measuring speed of highway, and speed measurement system |
| CN207799717U (en) * | 2017-12-29 | 2018-08-31 | 广州市中海达测绘仪器有限公司 | IC card with high-precision positioning function and the monitoring system based on IC card |
| CN110667580A (en) * | 2019-11-19 | 2020-01-10 | 常州机电职业技术学院 | Overspeed and speed limiting prevention control device and method for automobile |
Non-Patent Citations (1)
| Title |
|---|
| 四轮客货车安全车速实时监测模型的研究;冯辉荣;;力学与实践(06);46-49、87 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116778726A (en) | 2023-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110544390B (en) | Vehicle-vehicle interactive pedestrian active collision avoidance method and device | |
| CN208101973U (en) | A kind of intelligent driving auxiliary anti-collision system | |
| US9619432B2 (en) | Driver assisting system and method with windscreen heads-up display of vehicle environment | |
| CN207594866U (en) | A kind of vehicle load measurement system of vehicle load | |
| CN108608942A (en) | A kind of automobile anti-rear end collision method and early warning system | |
| CN207345668U (en) | Vehicle | |
| CN104494550A (en) | Active anticollision device of vehicle and calculating method of anticollision distance | |
| CN109629470B (en) | Active early warning type anti-collision guardrail for double-lane curve in mountainous area and rear-end collision early warning method | |
| CN202400085U (en) | Automobile rear-end prevention system | |
| CN104111058A (en) | Vehicle distance measuring method and device and vehicle relative speed measuring method and device | |
| CN102673561A (en) | Tailgating prevention system and method for automobile | |
| CN109774473B (en) | Speed limit control method based on camera and navigation data fusion | |
| CN106627590A (en) | Braking distance calculation method and device | |
| JP2006291502A (en) | Traffic monitoring and warning system | |
| CN109050522A (en) | A kind of automated parking system based on radar sensor and panoramic shooting | |
| CN111402626A (en) | Safe following distance control system and control method based on vehicle-road cooperation | |
| CN210242946U (en) | Wagon capable of preventing wagon from jumping | |
| EP4035966A1 (en) | Traveling device on tracks | |
| CN112918419A (en) | Vehicle-mounted method and device for preventing falling object from high altitude | |
| CN113085854A (en) | System and method for identifying obstacle above vehicle through radar camera | |
| CN116778726B (en) | Monitoring management system based on displacement measurement and speed measurement | |
| CN108759849B (en) | Automobile self-positioning navigation system | |
| CN217157480U (en) | Highway tunnel risk monitoring system based on people's car behavior analysis | |
| CN114708725B (en) | Temperature early warning system and early warning method for vehicle brake on long and large downhill road section | |
| CN111862683B (en) | Vehicle crossing early warning method using sharp-turning road section with early warning function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |