CN215003890U

CN215003890U - Vehicle dynamic weighing blank pressing passing behavior alarm device

Info

Publication number: CN215003890U
Application number: CN202121519590.0U
Authority: CN
Inventors: 林宇凡; 闵永军; 孙文进; 吕晗珺
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-03
Anticipated expiration: 2031-07-05

Abstract

The utility model provides a vehicle dynamic weighing blank pressing traffic action alarm device, includes: the device comprises a pressure sensing device, a signal conditioning module, a controller, an alarm device and a power supply module. The pressure sensing device is buried in the engineering material of the weighing blind area between the exposed weighing platform and the road edge, a signal output terminal of the pressure sensing device is connected with a signal input port of the signal conditioning module, a signal output terminal of the signal conditioning module is connected with a signal input port of the controller, an alarm signal output terminal of the controller is connected with the alarm device, and an output terminal of the power supply module is connected with power supply input ports of the pressure sensing device, the signal conditioning module, the controller and the alarm device respectively. When the axle is driven on the exposed weighing platform to have blank pressing passing behavior, the device can effectively identify the blank pressing passing behavior and give out sound and light alarm, and the number of the used pressure sensors is small, the requirements on dynamic response and precision are not high, and the cost of the device can be effectively reduced.

Description

Vehicle dynamic weighing blank pressing passing behavior alarm device

Technical Field

The utility model relates to a heavy technical field of vehicle meter, in particular to be applied to vehicle unipolar dynamic weighing anti-cheating device in highway lane.

Background

The vehicle overload transportation easily induces road traffic safety accidents, accelerates the damage of highway infrastructure and disturbs the order of freight market, and the vehicle overload management is the normalized regulatory law enforcement work of traffic transportation and public security departments. The dynamic weighing detection of the vehicle is the main overload control means at present. Under the drive of benefits, part of overloaded vehicle drivers control the motion mode of the vehicle when passing through the dynamic weighing equipment by utilizing the defects of the existing vehicle dynamic weighing equipment, and the purpose that the axle load measurement value of the dynamic weighing instrument is lower than the actual axle load of the vehicle is achieved. When a driver drives a vehicle to pass through the weighing platform, the vehicle is close to the road edge and exceeds the weighing platform to run, and wheels are pressed between the weighing platform and the road surface, so that the action of blank pressing and passing (also called pressing and weighing edges or welting and weighing) is one of the ways of reducing weight and cheating. By using the method, when the axle passes through the weighing platform, part of the weight of the axle is directly born by the road surface without passing through the weighing platform, and the dynamic weighing instrument can only weigh the axle weight born by the weighing platform and is lower than the actual axle weight. In order to prevent the vehicle from rubbing and colliding with road facilities when passing through the weighing instrument, a gap is inevitably left between each side of the weighing platform and the road edge in the direction perpendicular to the driving direction to form a weighing blind area, so that the common weighing instrument is difficult to stop the cheating action of blank pressing and passing. The pre-embedded weighing sensor dynamic weighing device is provided in Chinese patent CN207946147, wherein the weighing sensor is pre-embedded in a weighing road surface road engineering material, and for a vehicle with a blank-pressing running, the weight of the vehicle can be calculated through the overlapping area part of adjacent pre-embedded weighing sensors perpendicular to the running direction, so that the weighing precision of the dynamic weighing system is improved. However, the key point of the above scheme is to improve the dynamic weighing precision, and in the specific implementation process, the embedded weighing sensors are required to be distributed over the weighing area at high density, so that the weighing device is required to have a large number of sensors, fast dynamic response, high precision and high cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the used pressure sensor of current vehicle dynamic weighing anti-blank pressing current cheating device large in quantity, performance requirement height and with high costs not enough, the utility model provides a vehicle dynamic weighing blank pressing current behavior alarm device, the device can effectively discern the driver at the current cheating action of blank pressing when highway lane unipolar dynamic weighing, and used pressure sensor is small in quantity moreover, performance requirement is low, and is with low costs.

The utility model provides a technical scheme that its technical problem adopted is: the vehicle dynamic weighing and edge pressing passing behavior alarm device consists of five parts, namely a pressure sensing device, a signal conditioning module, a controller, an alarm device and a power module. The pressure sensing device is buried in the engineering material of a weighing blind area between an exposed weighing platform and a road edge, according to the size of the weighing blind area, the pressure sensing device on each side is composed of 2-4 sensor groups, each sensor group is composed of 2-3 sensors, one sensor is tightly attached to the edge of the weighing platform, the other sensors are distributed in a staggered mode, full coverage of vertical load measurement of wheels of the weighing blind area is achieved, a signal output terminal of the pressure sensing device is connected with a signal input port of a signal conditioning module, a signal output terminal of the signal conditioning module is connected with a signal input port of a controller, an alarm signal output terminal of the controller is connected with an alarm device, and output terminals of a power supply module are respectively connected with the pressure sensing device, the signal conditioning module, the controller and a power supply input port of the alarm device. The pressure sensing device detects the vertical load of the wheel when the axle passes through the weighing platform and the blank pressing passing action occurs; the signal conditioning module is used for filtering, screening, amplifying and the like the pressure signal of the pressure sensing device; the controller collects the output signal of the signal conditioning module, calculates the output signal, compares the output signal with a preset threshold value, outputs a control signal of the alarm device and turns on or off the alarm device; when the alarm device is turned on, an audible and visual alarm is given; the power supply module supplies power to the pressure sensing device, the signal conditioning module, the controller and the alarm device; in addition, in order to ensure timely and accurate identification of all blank pressing passing behaviors, the supporting frames on two sides of the weighing platform perpendicular to the driving direction are hidden below the weighing flat plate, and once the wheels deviate from the weighing platform, the pressure sensing device of the device can detect pressure signals. When an axle is driven onto a weighing platform for weighing, if a blank pressing passing behavior occurs, a pressure sensing device can detect the vertical load of a wheel to generate a pressure signal, the signal is filtered, compared and screened out a maximum pressure signal through a signal conditioning module and amplified, a controller collects the pressure signal amplified by the signal conditioning module, calculation and judgment are carried out, if the measured pressure value is greater than a preset threshold value, an alarm device opening signal is output, and an audible and visual alarm is given out by the alarm device; if no blank pressing passing behavior occurs, the alarm device does not work.

The utility model has the advantages that: a pressure sensor is embedded in the engineering material of the weighing blind area between the exposed weighing platform and the road edge, so that the blank-pressing traffic cheating behavior can be effectively identified, the cheating and lucky psychology of drivers is eliminated, and the traffic safety is not influenced; only burying pressure sensors in weighing blind areas, wherein the number of the sensors is small; the device can effectively reduce the cost of the device as long as the device can effectively identify the cheating behavior of the non-pressure side-through, and the dynamic response and precision requirements of the pressure sensor are not high.

Drawings

Fig. 1 is the utility model relates to a vehicle dynamic weighing blank pressing current behavior alarm device's schematic diagram.

In the figure, 1 is a pressure sensing device, 2 is a signal conditioning module, 3 is a controller, 4 is an alarm device, and 5 is a power supply module.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.

Fig. 1 is a schematic structural diagram of a vehicle dynamic weighing and edge pressing passing behavior alarm device, which comprises a pressure sensing device (1), a signal conditioning module (2), a controller (3), an alarm device (4) and a power module (5). In figure 1, a pressure sensing device (1) is buried in an engineering material in a weighing blind area, a signal output terminal of the pressure sensing device (1) is connected with a signal input port of a signal conditioning module (2), a signal output terminal of the signal conditioning module (2) is connected with a signal input port of a controller (3), an alarm signal output terminal of the controller (3) is connected with an alarm device (4), and an output terminal of a power supply module (5) is respectively connected with the pressure sensing device (1), the signal conditioning module (2), the controller (3) and a power supply input port of the alarm device (4).

In the embodiment shown in fig. 1, the width of a weighing platform is 80cm, supporting frames on two sides of the weighing platform perpendicular to the driving direction are hidden under a weighing flat plate, the width of a weighing blind area between the weighing platform and a road edge is exposed and is 20cm, a pressure sensing device (1) is embedded in engineering materials in the weighing blind area, the pressure sensing device (1) on each side is composed of 3 stone crystal sheet pressure sensor groups, wherein 1 sensor group is located in the middle of the weighing blind area, the central line of the other two sensor groups is about 30cm away from the central line of the weighing blind area, each sensor group is composed of 2-3 stone crystal sheet sensors, one sensor is tightly attached to the edge of the weighing platform, and the other sensors are distributed in a staggered manner, so that the full coverage of the vertical load detection of wheels in the weighing blind area is realized. In the embodiment, the power supply module (5) simultaneously supplies power to the pressure sensing device (1), the signal conditioning module (2), the controller (3) and the alarm device (4); the pressure sensing device (1) detects the vertical load of the wheel when the axle passes through the weighing platform and the blank pressing passing action occurs; the signal conditioning module (2) firstly carries out filtering processing on the pressure signals of the pressure sensor group (1), then carries out signal magnitude comparison, screens out the maximum pressure signals and carries out amplification processing; setting the threshold value of the controller (3) to be 1kN, acquiring an output signal of the signal conditioning module (2) by the controller (3), calculating, outputting a control signal for turning on the alarm device (4) if the measured vertical load of the wheel is more than or equal to 1kN, and giving an acousto-optic alarm by the alarm device (4), otherwise, outputting a control signal for turning off the alarm device (4) by the controller (3), and enabling the alarm device (4) not to work.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, various modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a vehicle dynamic weighing blank pressing traffic action alarm device, includes: pressure sensing device, signal conditioning module, controller, alarm device and power supply unit, its characterized in that: the pressure sensing device is buried in the engineering material of the weighing blind area between the exposed weighing platform and the road edge, a signal output terminal of the pressure sensing device is connected with a signal input port of the signal conditioning module, a signal output terminal of the signal conditioning module is connected with a signal input port of the controller, an alarm signal output terminal of the controller is connected with the alarm device, and an output terminal of the power supply module is connected with power supply input ports of the pressure sensing device, the signal conditioning module, the controller and the alarm device respectively.

2. The vehicle dynamic weighing and blank pressing traffic behavior alarm device according to claim 1, characterized in that: the pressure sensing device is buried in the engineering material of the weighing blind area between the exposed weighing platform and the road edge, according to the size of the weighing blind area, the pressure sensing device on each side is composed of 2-4 sensor groups, each sensor group is composed of 2-3 sensors, one sensor is tightly attached to the edge of the weighing platform, and the other sensors are distributed in a staggered mode, so that the full coverage of the weighing blind area wheel vertical load measurement is achieved.