CN105160888B

CN105160888B - A kind of system and method for not parking vehicle car weight information gathering with matching

Info

Publication number: CN105160888B
Application number: CN201510654882.8A
Authority: CN
Inventors: 潘若愚; 陈军; 褚伟; 宋海波; 梁昌勇; 吴昊; 张公让; 朱克毓; 曹龙涛; 潘立生; 宋志诚; 林朋; 宋常华; 陶庭兴
Original assignee: Anhui Tech-Handgo Co Ltd; Hefei University of Technology
Current assignee: Anhui Tech-Handgo Co Ltd; Hefei University of Technology
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2017-11-10
Anticipated expiration: 2035-10-12
Also published as: CN105160888A

Abstract

For the deficiency of existing e measurement technology, a kind of system and method for the not parking vehicle car weight information gathering provided by the invention with matching：Described system, including track car weight information monitoring module, tire identification module, monitoring ultrasonic module, message processing module；Described method, including 10 steps；Beneficial technique effect：The invention provides the hardware environment for multilane, by the reasonable combination to each module and configuration, overcome it is original need vehicle introducing single track, caused by great in constructing amount, the problems such as flow speeds are slow.

Description

System and method for collecting and matching vehicle weight information of non-stop vehicle

Technical Field

The invention belongs to the technical field of measurement, particularly relates to a vehicle non-stop weighing technology in traffic transportation monitoring, and particularly relates to a system and a method for collecting and matching vehicle weight information of a non-stop vehicle.

Background

The road vehicles often have overload during the transportation of goods, which not only can cause serious damage to the road, but also can cause traffic accidents. In order to avoid the damage of the overloaded vehicle to the road, the special transportation vehicles of special enterprises are also provided with the on-vehicle weight monitoring device, but the on-vehicle weight monitoring device has no universality; generally, a static or dynamic weighing device is arranged at a junction where a card is specially arranged, such as a toll station, to weigh and detect vehicles, mainly for weighing and charging, but parking and weighing are often needed. As the quantity of the retained domestic automobiles is increased, the promotion of economic development and the increase of electricity and commercial businesses to the logistics industry is increased, vehicles such as goods and the like are increased year by year, and the demand of weighing without stopping the automobiles is more and more emphasized.

In the aspect of weighing, the device that the cooperation was weighed not stopped among the prior art mainly has: the infrared vehicle divider, the axle recognizer, the dynamic truck scale and the like need to lead the vehicle into a single lane, so that the construction quantity is large, the lane width can be increased or reduced, and meanwhile, the infrared vehicle divider has the characteristic of concealment. Under the condition of weighing without stopping the vehicle and keeping the vehicle unattended, drivers sometimes have some cheating means to move the center of the vehicle back and forth so as to ensure that the weight weighed by the vehicle scale is much smaller than the actual weight.

The products on the market are mature in the technology of identifying the vehicle type and the license plate number by the camera. At present, the vehicle weighing detection provides the requirement of dynamic weighing without stopping the vehicle running freely on two lanes, and the camera performs photographing and license plate recognition, so that the information of the camera and the license plate is fused, and evidence is provided for punishing overweight vehicles. Since weighing and camera shooting are often produced by two specialized manufacturers, and the weighing equipment and camera shooting equipment differ in the speed at which information is sensed and processed and transmitted, and their respective speeds may be disturbed by networks and various circuits. Because the axletree recognizer needs to adopt the signal of dividing the car that the infrared ray divides the car to provide, come to count the axletree quantity of whole car, then just can obtain whole axle number, but when the vehicle went in the two lanes simultaneously, the problem that can't detect the two cars side by side is divided to placing of infrared ray to and the current whole weighbridge formula truck scale can not solve the unordered weighing problem of driving of vehicle and position confusion, so the measure that the two lanes freely travel the vehicle and weigh and detect has not been solved to the scheme of perfect system at present.

The method has the advantages that the photos and license plate numbers of the passing vehicles need to be synchronously provided for the weighing records, so that the weighing monitoring information can be completely matched, and the matching error rate is reduced, which is an index that needs to be improved all the time in the field of dynamic weighing.

Therefore, a set of vehicle detection device and method suitable for multiple lanes needs to be provided, so that the problem that the existing vehicle weight information acquisition and matching system can only detect a single lane is solved.

Disclosure of Invention

Aiming at the defects of the prior measurement technology, the system and the method for acquiring and matching the vehicle weight information of the non-stop vehicle can solve the problem of acquiring the vehicle weight information of the non-stop vehicle when the one-way two-lane vehicle drives and the problem of difficulty in matching the vehicle information of the picture vehicle acquired by the network camera equipment with the weighing equipment information, improve the accuracy of information matching, and avoid the phenomenon of discarding data due to matching errors; and daily traffic flow and overload rate can be uploaded simultaneously in real time.

The invention adopts the following technical scheme for achieving the aim of the invention:

a system for collecting and matching vehicle weight information of a non-stop vehicle comprises a lane vehicle weight information monitoring module 1000, a tire identification module 2000, an ultrasonic monitoring module 3000 and an information processing module 4000;

the lane weight information monitoring module 1000 is respectively connected with the ultrasonic monitoring module 3000 and the information processing module 4000; the tire identification module 2000 and the ultrasonic monitoring module 3000 are respectively connected with the information processing module 4000;

the lane weight information monitoring module 1000 is responsible for collecting signals when vehicles pass through by equipment in the unit and feeding back lane weight information data packets to a rear-stage module; the lane weight information data packet contains vehicle entering time information, vehicle wheel passing time information, weight information of each axle, vehicle photo data and a vehicle leaving signal; the lane weight information monitoring module 1000 comprises more than 2 lane information monitoring units;

the tire identification module 2000 is responsible for collecting the passing time of the wheel and the position information of the wheel;

the ultrasonic monitoring module 3000 is responsible for determining the starting and stopping time of a single vehicle and whether the vehicle has a cross-lane driving behavior;

the information processing module 4000 is responsible for processing data of the lane weight information monitoring module 1000, the tire identification module 2000 and the ultrasonic monitoring module 3000, determining accurate weight information of a single vehicle at a corresponding position, and forwarding the weight information to the server;

the vehicle weight information comprises wheel track, axle number, axle weight, axle distance, vehicle weight, vehicle speed, license plate number, license plate color and vehicle photos.

The acquisition and matching method of the system for acquiring and matching the vehicle weight information of the non-stop vehicle is adopted and comprises the following steps:

step 1: detecting whether a vehicle enters a monitoring area: if no vehicle enters, keeping a standby state; if the vehicle enters, the step 2 is carried out;

step 2: establishing a vehicle data packet, preparing to receive vehicle weight information, and then entering step 3;

and step 3: monitoring the real-time position of a single vehicle entering the monitoring area, and then entering step 4;

and 4, step 4: establishing a data packet of a single vehicle, selecting a camera for photographing and identifying a license plate, and then entering step 5;

and 5: judging the running condition of the vehicle by monitoring the number and the positions of the wheels, and then entering step 6;

step 6: calculating the weight of the axle according to the driving condition obtained by judging in the step 5, calculating the weight of the axle according to the driving condition of the vehicle in the lane, the pressing line driving condition of the vehicle, the cross-lane driving condition of the vehicle, or calculating the weight of the axle according to the oblique driving condition; then step 7 is carried out;

and 7: judging whether the vehicle completely passes: if the vehicle passes completely, go to step 8; otherwise, returning to the step 5;

and 8: summarizing and matching vehicle weight information, and then entering step 9;

and step 9: judging whether all vehicles in the monitoring area are driven out; if yes, entering step 10; otherwise, returning to the step 2;

step 10: and (5) forwarding the vehicle weight information to the remote server, and returning to the step 1.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a hardware environment aiming at multiple lanes, and solves the problems of large construction amount, low traffic flow speed and the like caused by the fact that vehicles need to be led into a single lane in the prior art through reasonable combination and configuration of all modules.

The invention also overcomes the problem of poor compatibility of the traditional weighing and camera equipment.

The invention also solves the problem that the existing integral wagon balance cannot weigh the running vehicles with disorder vehicles and disordered positions.

Through the comprehensive application of a plurality of dynamic motor weighers, namely quartz crystal sensors, geomagnetic induction coils, tire recognizers, CCD cameras and auxiliary ultrasonic probes, through comprehensive arrangement and marking of weighing and image information, the vehicle weight information and the number of vehicle axles of running vehicles on two lanes can be counted simultaneously under the condition of no stop, the wheel distance and the vehicle speed are increased, through setting different equipment numbers, vehicle information headers and data packaging start-stop marks, the weighing information and the image information acquired by the cameras and the analyzed license plate information can be effectively matched, the problem that the vehicle weight information of multi-lane vehicles is not easy to acquire and match is solved, the waste of manpower and material resources, which is time-consuming and labor-consuming and needs to arrange for a specially-assigned person to wait, such as facilities for establishing safety islands at toll gates and the like is avoided. The tire width can be determined through the tire identifier, whether the vehicle has the condition of cross-road driving or not and the speed measurement timing is started according to the vehicle position information, the whole axle weight of the vehicle can be measured through the first quartz crystal sensor and is used as the end point of the speed measurement timing, and the vehicle speed of the vehicle is calculated according to the distance between the tire identifier and the quartz crystal sensor and the triggering time of the tire identifier and the quartz crystal sensor; the second quartz crystal sensor is used for collecting the vehicle weight information of the vehicle crossing the lane, and when the vehicle is judged to drive across the lane, the vehicle weight information collected by the second quartz crystal sensor is used for estimating the weight of the axle; the CCD camera can take photos for two times continuously, the shot pictures are digital pictures, and the color of the license plate and characters on the license plate can be analyzed. And effectively matching the lane information and the time information carried by the hardware, integrating the lane information and the time information into a picture, and storing the picture in a server through a network module. Because the information is digital, the server can identify and display the traffic flow and the overload rate in real time on the same day.

Drawings

FIG. 1 is a block schematic of the present invention.

Fig. 2 is a schematic diagram showing the connection relationship of units in the modules in fig. 1.

Fig. 3 is a schematic view of an internal structure of the first lane information detecting unit of fig. 2.

Fig. 4 is an internal structural diagram of the second lane information detecting unit in fig. 2.

Fig. 5 is a schematic view of the installation of the present invention.

Fig. 6 is a simplified perspective view of fig. 5.

FIG. 7 is a flow chart of the acquisition matching method of the present invention.

FIG. 8 is a schematic block diagram of the acquisition matching method of the present invention.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

referring to fig. 1, a system for collecting and matching vehicle weight information of a non-stop vehicle is characterized in that: the system comprises a lane weight information monitoring module 1000, a tire identification module 2000, an ultrasonic monitoring module 3000 and an information processing module 4000;

Referring to fig. 2, further, the lane weight information monitoring module 1000 includes more than one lane information monitoring units; each lane information monitoring unit comprises a lane central ultrasonic probe, a first ground induction coil detector, a first dynamic truck scale, a second ground induction coil detector, a second dynamic truck scale and a camera; wherein,

the output end of the first ground induction coil is connected with the input end of the first ground induction coil detector; the output end of the second ground induction coil is connected with the input end of the second ground induction coil detector; the output end of the first ground induction coil detector, the output end of the first dynamic truck scale, the output end of the second ground induction coil detector, the output end of the second dynamic truck scale and the camera are respectively connected with the input end of the information processing module 4000; the output end of the ultrasonic probe in the center of the lane is connected with the input end of the ultrasonic monitoring module 3000;

the central ultrasonic probe is responsible for monitoring whether a vehicle runs across the lane on the lane where the central ultrasonic probe is located;

the first ground induction coil receives the fixed-frequency electric signal sent by the first ground induction coil detector, and when a vehicle enters the first ground induction coil, the first ground induction coil feeds back an electric signal which changes correspondingly;

the first ground induction coil detector is responsible for sending a fixed-frequency electric signal to the first ground induction coil, receiving an electric signal fed back by the first ground induction coil, judging whether a vehicle enters or not and forming a switching value signal;

the first dynamic motor scale is used for collecting a charge signal obtained when a vehicle passes through the first dynamic motor scale, amplifying the charge signal and converting the charge signal into a voltage value;

the second ground induction coil is used for receiving the fixed-frequency electric signal sent by the second ground induction coil detector and feeding back the correspondingly changed electric signal when a vehicle exits the second ground induction coil;

the second ground sensing coil detector is responsible for sending a fixed-frequency electric signal to the second ground sensing coil, receiving an electric signal fed back by the second ground sensing coil, judging whether a vehicle leaves or not and forming a switching value signal;

the second dynamic motor scale is used for collecting charge signals obtained when the vehicle passes through the second dynamic motor scale, amplifying the charge signals and converting the charge signals into voltage values;

the camera is responsible for receiving the control signal of the information processing module 4000 to take a picture twice and transmitting the picture data to the information processing module 4000;

further, the model of the central ultrasonic probe is DDY1CJC 1; the first ground induction coil and the second ground induction coil are wound by high-temperature resistant tinned wires with the diameter of 0.75 mm; the first ground induction coil and the second ground induction coil are both 2 meters long and 1 meter wide; cutting angles of 45 degrees and 20cm long are respectively formed at four corners of the first ground induction coil and the second ground induction coil; the models of the first ground induction coil detector and the second ground induction coil detector are LD102 single-channel coil vehicle detectors of Shanghai De Hui electronics; the models of the first dynamic truck scale and the second dynamic truck scale are GBS-30DZ dynamic truck scales; the first dynamic truck scale and the second dynamic truck scale comprise quartz crystal sensors, cables, charge amplifiers and weighing controllers; the camera is available in the form of DS-2CD986A available from haokangwei.

Referring to fig. 3, further, the lane weight information monitoring module 1000 includes 2 lane information monitoring units, which are respectively recorded as a first lane information monitoring unit 1100 and a second lane information monitoring unit 1200;

the first lane information monitoring unit 1100 comprises a first lane central ultrasonic probe 1101, a first lane first ground induction coil 1102, a first lane first ground induction coil detector 1103, a first lane first dynamic truck scale 1104, a first lane second ground induction coil 1106, a first lane second ground induction coil detector 1107, a first lane second dynamic truck scale 1108 and a first lane camera 1109;

the second lane information monitoring unit 1200 includes a second lane central ultrasonic probe 1201, a second lane first ground induction coil 1202, a second lane first ground induction coil detector 1203, a second lane first dynamic truck scale 1204, a second lane second ground induction coil 1206, a second lane second ground induction coil detector 1207, a second lane second dynamic truck scale 1208, and a second lane camera 1209;

the first lane information monitoring unit 1100 is disposed on a lane, wherein a frequency change signal of a ground induction coil of a first ground induction coil 1102 of the first lane, a frequency change signal of a ground induction coil of a second ground induction coil 1106 of the first lane, a transceiving time change signal of an ultrasonic probe of a central ultrasonic probe 1101 of the first lane, a voltage signal of a first dynamic truck scale 1104 of the first lane, and a voltage signal of a second dynamic truck scale 1108 of the first lane;

referring to fig. 4, further, the second lane information monitoring unit 1200 is disposed on an adjacent lane and is responsible for feeding back a ground induction coil frequency variation signal of the first ground induction coil 1202 of the second lane, a ground induction coil frequency variation signal of the second ground induction coil 1206 of the second lane, a transceiving time variation signal of the ultrasonic probe 1101 at the center of the first lane, a voltage signal of the first dynamic truck scale 1204 of the second lane, and a voltage signal of the second dynamic truck scale 1208 of the second lane;

the tire identification module 2000 includes a tire identifier 2100 and a tire identification controller 2200; the tire identifier 2100 is connected to the information processing module 4000 via the tire identification controller 2200;

the ultrasonic monitoring module 3000 comprises an inter-road ultrasonic probe 3100 and an ultrasonic detection host 3200; the inter-road ultrasonic probe 3100 is arranged at a boundary position between the first lane and the second lane, and is responsible for detecting a time change signal transmitted and received by the ultrasonic probe when a single vehicle travels across lanes, namely, a vehicle signal which cannot be detected by a lane central ultrasonic probe of a lane weight information monitoring unit in the first lane and the second lane when the vehicle travels across lanes is detected; the road ultrasonic probe 3100 is connected to the information processing module 4000 via an ultrasonic inspection host 3200.

Further, the tire identifier 2100 is of the model LZ-A tire identifier of the tribasic technology; the type of the road ultrasonic probe 3100 is DDY1CJC1 ultrasonic probe; the model of the ultrasonic detection host 3200 is DDY1CJC1 ultrasonic detection host.

Referring to fig. 2, further, the information processing module 4000 includes a first camera 4100, a second camera 4200, a first single chip microcomputer 4100, a second single chip microcomputer 4200, and a network communication processing module 4300; wherein,

the first camera 4100, the second camera 4200, the first single chip microcomputer 4100 and the network communication processing module 4300 are respectively connected with the second single chip microcomputer 4200;

the first single chip microcomputer 4100 is respectively connected with the tire identification controller 2200, the first lane information monitoring unit 1100, the second lane information monitoring unit 1200 and the ultrasonic detection host 3200; the first single chip microcomputer 4100 respectively acquires the number and position information of tires fed back by the tire identification controller 2200, the voltage values corresponding to the passing time and the tire load of all tires on the first lane fed back by the first lane information monitoring unit 1100, the voltage values corresponding to the passing time and the tire load of all tires on the second lane fed back by the second lane information monitoring unit 1200, and the switching value data formed by the ultrasonic transmitting/receiving time change reflecting the vehicle entering and leaving, fed back by the ultrasonic detection host 3200, and transmits the data to the second single chip microcomputer 4200;

the camera 1109 in the first lane information monitoring unit 1100 is responsible for taking a license plate picture of a vehicle on a lane where the first lane information monitoring unit 1100 is located, and feeding back the license plate picture to the second single chip microcomputer 4200;

the camera 1209 in the second lane information monitoring unit 1200 is responsible for taking a license plate picture of a vehicle on the lane where the second lane information monitoring unit 1200 is located, and feeding the license plate picture back to the second single chip microcomputer 4200;

the first single chip microcomputer 4100 is a weighing controller and is responsible for sending a photographing control signal to the second single chip microcomputer and judging and summarizing data of the front sensor; the processing result of the first single chip microcomputer 4100 is transmitted to the second single chip microcomputer 4200 for further processing;

the second single chip microcomputer 4200 is an image processing module and is responsible for receiving the photographing control signal of the first single chip microcomputer, controlling the camera to photograph, recognizing the license plate of the photograph and storing the license plate information under the corresponding vehicle weight information;

the network communication processing module 4300 is responsible for transmitting the processing result of the second single chip microcomputer 4200 to the remote server.

Further, the model of the first single chip microcomputer 4100 is STM32F103RBT 6; the model of the second singlechip 4200 is AT91SAM9G45 of ARM9 kernel; the model of the network communication processing module 4300 is ZHD750 embedded 3G DTU of 750T.

Referring to fig. 5 and fig. 6, further, a system for acquiring and matching the vehicle weight information of the non-stop vehicle is arranged on a unidirectional double lane; recording one lane of the one-way double lanes as a first lane and recording the other lane as a second lane;

a first lane information monitoring unit 1100 is provided on the first lane; a second lane information monitoring unit 1200 is provided on the second lane; a tire recognizer 2100 is arranged on the first lane and the second lane together; an inter-road ultrasonic probe 3100 is provided between the first lane and the second lane; wherein,

a first lane first ground induction coil 1002, a first lane central ultrasonic probe 1101, a first lane first dynamic truck scale 1104, a first lane second dynamic truck scale 1108, a first lane second ground induction coil 1106 and a first lane camera 1109 are sequentially arranged in the traveling direction of a first lane; the width of the first lane first dynamic truck scale 1104 is equal to the width of the first lane; one end of the first lane second dynamic truck scale 1108 is adjacent to a boundary between the first lane and the second lane;

a second lane first ground induction coil 1202, a second lane central ultrasonic probe 1201, a second lane first dynamic truck scale 1204, a second lane second dynamic truck scale 1208, a second lane second ground induction coil 1207 and a second lane camera 1209 are sequentially arranged in the driving direction of a second lane; the width of the second lane first dynamic truck scale 1204 is equal to the width of the second lane; one end of the second dynamic truck scale 1208 of the second lane is adjacent to the boundary between the first lane and the second lane;

the width of the first lane first dynamic truck scale 1104 is equal to the width of the second lane first dynamic truck scale 1204;

the width of the first lane second dynamic truck scale 1108 is equal to the width of the second lane second dynamic truck scale 1208;

the sum of the widths of the first lane second dynamic truck scale 1108 and the second lane second dynamic truck scale 1208 is equal to the width of the first lane first dynamic truck scale 1104;

the installation positions of the first lane first ground induction coil 1102, the first lane central ultrasonic probe 1101, the first lane first dynamic truck scale 1104, the first lane second ground induction coil 1106, the first lane second dynamic truck scale 1108, the first lane second ground induction coil 1106 and the first lane camera 1109 are respectively aligned with the installation positions of the second lane first ground induction coil 1202, the second lane central ultrasonic probe 1201, the second lane first dynamic truck scale 1204, the second lane second dynamic truck scale 1208, the second lane second ground induction coil 1206 and the second lane camera 1209;

the mounting location of the tire identifier 2100 is in the area between the first lane central ultrasound probe 1101 and the first lane first dynamic truck scale 1004; the width of the tire identifier 2100 is the sum of the width of the first lane and the width of the second lane;

the inter-road ultrasonic probe 3100 is installed at a boundary between the first lane and the second lane, and the installation position of the inter-road ultrasonic probe 3100 is flush with the installation position of the first lane central ultrasonic probe 1101 and the installation position of the second lane central ultrasonic probe 1201;

first lane first ground induction coil detector 1103, first lane second ground induction coil detector 1107, second lane first ground induction coil detector 1203, second lane second ground induction coil detector 1207, first single chip microcomputer 4100, second single chip microcomputer 4200, network communication processing module 4300, tire identification controller 2200, ultrasonic detection host 3200 are all arranged on the sides of the two lanes.

Referring to fig. 7, the acquisition and matching method of the system for acquiring and matching the weight information of the non-stop vehicle is carried out according to the following steps:

Referring to fig. 7, further, the specific steps of the collecting and matching method using the system for collecting and matching the weight information of the non-stop vehicle are as follows:

step 1: detecting whether a vehicle enters:

according to the information detected in and from the first and second lane information monitoring units 1100 and 1200 of the lane information monitoring module 1000

Judging whether a vehicle enters or not through a reflection signal of a first road first ground induction coil 1102 connected with a first road first ground induction coil detector 1103 and a reflection signal of a second road first ground induction coil 1202 connected with a second road first ground induction coil detector 1203, and if not, continuously detecting; if the reflected signal of the first ground induction coil 1102 of the first lane and/or the reflected signal of the first ground induction coil 1202 of the second lane changes, the vehicle enters, and step 2 is carried out;

step 2: establishing a vehicle data packet to prepare for receiving vehicle weight information:

a switching value into which a change in a reflected signal of the first lane first ground induction coil detector 1103 is converted by the first lane first ground induction coil detector 1103;

a switching amount into which the reflection signal variation of the second lane first ground induction coil detector 1203 is converted by the second lane first ground induction coil detector 1203;

the first single chip microcomputer 4100 receives the switching value fed back by the first ground induction coil detector 1103 of the first lane and the switching value fed back by the first ground induction coil detector 1203 of the second lane, thereby judging that the vehicle enters the corresponding lane; when the first single-chip microcomputer 4100 determines that a vehicle enters, a vehicle data packet is established to prepare for receiving vehicle weight information, and then the step 3 is carried out;

and step 3: judging whether a single vehicle enters or not and judging the position of the vehicle:

the ultrasonic detection host 3200 detects the transmitting and receiving time of the first lane central ultrasonic probe 1101, the second lane central ultrasonic probe 1201 and/or the inter-road ultrasonic probe 3100, determines which ultrasonic probes feedback the transmitting and receiving time changes, the ultrasonic detection host 3200 sends the detection result to the first single chip microcomputer 4100, and the first single chip microcomputer 4100 judges the number of vehicles and the lane to which the vehicles belong;

and 4, step 4: establishing a data packet of a single vehicle, selecting a photographing camera to photograph and identifying a license plate:

the first single chip microcomputer 4100 sets a single vehicle data packet according to the judged number of the vehicles and the result of the lane to which the vehicles belong and sends the single vehicle data packet to the second single chip microcomputer 4200; the second single chip microcomputer 4200 starts the corresponding first lane camera 1109 and/or second lane camera 1209 to take pictures:

if the first lane has a car, then start the first lane camera 1109;

if the second lane has a vehicle, a second lane camera 1209 is started;

if both lanes have cars, then start the first lane camera 1109 and the second lane camera 1209;

if the vehicle is driving across lanes, the first lane camera 1109 and the second lane camera 1209 are started;

the second singlechip 4200 identifies the license plate color and characters of the picture, and simultaneously enters the step 5;

and 5: detecting the number and the positions of the wheels to judge the running condition of the wheels of the vehicle:

the tire identification module 2000 detects the wheel position and wheel passing time of the vehicle, generates a digital position sequence and feeds the digital position sequence back to the first single chip microcomputer 4100, the first single chip microcomputer 4100 decodes the sequence to obtain the wheel number and the wheel position, and then the running condition of the vehicle wheel is judged:

if the triggered tire recognizers are positioned at two sides of the lane boundary and the number of the triggered tire recognizers is even, judging that the vehicle runs in the lane; if the number of tires on one side is 2, only one vehicle passes when the number of tires on one side is 0, and two vehicles pass when the number of tires on both sides is 2;

if the triggered tire recognizer is located at the lane boundary, judging that the vehicle presses the line to run;

if the triggered tire recognizers are positioned on two sides of the lane boundary and the number of the triggered tire recognizers is 1, judging that the vehicle drives across the lane, and the number of the vehicles on the driving lane is 1;

if the total number of the triggered tire identifiers is 1, determining that the single vehicle runs obliquely;

subsequently, go to step 6;

step 6: selecting an axle weight calculation method:

if the vehicle is judged to be driven in the lane through the step 5, the axle weight calculation method of the step 6.1 is executed; if the step 5 judges that the vehicle runs under the condition of pressing the line, the step 6.2 is executed; if the vehicle is judged to be driven across lanes in the step 5, executing a step 6.3; if the vehicle is judged to be driven obliquely by the step 5, executing a step 6.4;

step 6.1: when the vehicle runs in the lane, the weighing result of the first lane first dynamic truck scale 1104 and/or the second lane first dynamic truck scale 1204 is the axle weight of the current axle of the vehicle on the corresponding lane;

step 6.2: when the vehicle presses the line and the number of tires in the lane is 1, for the vehicle to run by pressing the line, the axle weight of the measured axle is twice of the difference value between the first lane first dynamic truck scale 1104 and the first lane second dynamic truck scale 1108, or twice of the difference value between the second lane first dynamic truck scale 1204 and the second lane second dynamic truck scale 1208;

when the vehicle presses the line and the number of the tires in the lane is 2, the vehicle in the other lane drives through the line, and the measured axle weight of the axle is the sum of two times of the values of the first dynamic truck scale of the vehicle lane and the second dynamic truck scale of the other lane minus the first dynamic truck scale of the other lane;

in other words, the value is (the value fed back by the first lane first dynamic vehicle scale 1104 + the value fed back by the second lane first dynamic vehicle scale 1204) × 2 — the value fed back by the first lane second dynamic vehicle scale 1108, or (the value fed back by the first lane first dynamic vehicle scale 1104 + the value fed back by the second lane first dynamic vehicle scale 1204) × 2 — the value fed back by the second lane second dynamic vehicle scale 1208;

step 6.3: the number of vehicles passing through simultaneously needs to be judged when the vehicle travels across the lane:

if the number of tires is 2, the number of vehicles is 1 and step 6.3.1 is carried out; if the number of the tires is 4, judging the lane for weight measurement when the number of the vehicles passing by simultaneously is 2; if the number of tires in the lane is 1, the wheels of the vehicle on the lane where the axle weight is measured are on both sides of the lane boundary, then step 6.3.2 is performed; if the number of tires in the lane is 3, the wheel on the lane on which the axle weight is measured is the wheel on another lane in addition to the wheel of the vehicle to be measured, step 6.3.3;

step 6.3.1: when the bicycle runs across the lane, the measured axle weight of the axle is the sum of two first dynamic motor balances 1004;

in other words, it is the value fed back by the first lane first dynamic truck scale 1104 + the value fed back by the second lane first dynamic truck scale 1204;

step 6.3.2: the weight of the measured axle of the vehicle is twice the value of the first dynamic truck scale of the current lane;

in other words, the value of x 2 fed back to the first lane first dynamic vehicle scale 1104, or the value of x 2 fed back to the second lane first dynamic vehicle scale 1204);

step 6.3.3: the measured weight of the axle of the vehicle is the value of the first dynamic truck scale 1004 of the current lane minus the value of the first dynamic truck scale 1004 of the other lane;

in other words, the value fed back by the first lane first dynamic truck scale 1104 is the value fed back by the second lane first dynamic truck scale 1204, or the value fed back by the second lane first dynamic truck scale 1204 is the value fed back by the first lane first dynamic truck scale 1104;

step 6.4: the weight of the axle of the vehicle is measured as the sum of four values of two first dynamic motor balances 1004 measured twice in succession;

in other words, the value fed back by the first lane first dynamic vehicle scale 1104 for the first time + the value fed back by the first lane first dynamic vehicle scale 1104 for the second time + the value fed back by the second lane first dynamic vehicle scale 1204 for the first time + the value fed back by the second lane first dynamic vehicle scale 1204 for the second time;

and 7: judging whether the vehicle completely passes:

if the vehicle is judged to completely pass through the area to be detected, performing step 8; if not, returning to the step 5;

and 8: vehicle weight information summarization and matching:

the first single chip microcomputer 4100 collects the vehicle weight information of all axles, calculates the vehicle speed and estimates the vehicle wheel base according to the triggering time and distance between the tire identifier 2100 and the first dynamic vehicle scale 1104 of the first lane and the first dynamic vehicle scale 1204 of the second lane, calculates the vehicle length according to the change of the receiving and transmitting time of the ultrasonic probe, sends the data to the second single chip microcomputer 4200, and the second single chip microcomputer 4200 matches the license plate information which is identified with the vehicle weight information which is sent by the first single chip microcomputer;

and step 9: determining whether all entering vehicles have left:

if the vehicle entering the detection area does not exit yet and the vehicle enters the monitoring area, returning to the step 4 to collect and match information of the vehicle newly entering the monitoring area;

if all the vehicles driving into the detection area are driven out and no new vehicle enters the monitoring area, namely all the vehicles entering the monitoring area leave, then the step 10 is carried out;

step 10: the second single chip microcomputer 4200 packs the vehicle information packets in all the vehicle information packets, sends the packed vehicle information packets to the server through the network communication module 4300, and returns to step 1 to prepare for next vehicle information collection and matching.

Referring to fig. 8, the working principle and process of expanding to an environment with three lanes or more by adopting the collecting and matching method of the system for collecting and matching the weight information of the non-stop vehicle are as follows:

the method comprises the following steps: the weighing controller resets the statistical parameters in the system to zero after no vehicle passes by 24 points every day;

the statistical parameters mainly comprise a vehicle counter and an overweight counter, wherein the first lane vehicle counter is set to be 1 and M, the second lane vehicle counter is set to be 2 and N, and the overweight counter is set to be C; the criteria for no vehicle passing are: after the second ground induction coil of the first lane or the second lane sends a signal that a vehicle leaves, the front ground induction coil of the inner second lane has no signal that the vehicle enters, and a sensor between the two coils has no signal change; when a vehicle enters at 24 points, zeroing vehicle system counters 1, M, 2 and N under the condition that the adjacent rear ground induction coil sends a signal that the vehicle leaves and the front ground induction coil does not have a signal that the vehicle enters and the sensor between the two coils does not change;

step two: the first lane weight information monitoring unit and the second lane weight information monitoring unit convert frequency changes of first and second ground induction coils in respective units into switching values, convert charge information of a first dynamic automobile scale (quartz crystal sensor) and a second dynamic automobile scale (quartz crystal sensor) into voltage information, transmit the voltage information to the weighing controller, and send ultrasonic transceiving action signals of an ultrasonic probe in the center of a lane to the ultrasonic detection host; the ultrasonic detection host judges whether the ultrasonic receiving and transmitting time is different from the receiving and transmitting time of the ground through ultrasonic receiving and transmitting action signals of the ultrasonic probes at the centers of the first lane and the second lane and the lane-dividing ultrasonic probes, and sends a judgment result to the weighing controller; the tire identification controller converts the trigger signal obtained from the tire identifier into a digital sequence and sends the digital sequence to the weighing controller;

step three: the weighing controller sets a start-stop header for data packaging according to the switching values received from the first lane vehicle weight information monitoring unit and the second lane vehicle weight information monitoring unit and transmits the start-stop header to the image processing module; the weighing controller forms a trigger quantity according to a judgment result sent by the ultrasonic detection host, and simultaneously sets a vehicle counter and sends the trigger quantity to the image processing module, so that the image processing module triggers the camera to take a picture; the weighing controller determines the number and position information of wheels according to the number sequence obtained from the tire identification controller, and sets an axle number counter at the same time, and places the wheel track information under the current axle number counter; the weighing controller is used for converting voltage information received from the first lane vehicle weight information monitoring unit and the second lane vehicle weight information monitoring unit into a vehicle weight value, calculating and storing the vehicle weight value under the current axle number counter; the weighing controller puts the weighing information under the same vehicle counter according to the time mark, and simultaneously sets an overweight counter to count whether the vehicle is overrun or not and sends the information to the image processing module;

the data packaging start and stop headers are S and E respectively, wherein S is a start header, and E is an end header;

when a signal that a vehicle enters a first ground induction coil of a first lane or a second lane is detected, judging whether the vehicle enters or not, wherein the judging method is the same as the standard in the step one, if the vehicle enters, no response exists, if no vehicle enters, a data packaging starting header S is formed in the weighing controller, an ultrasonic probe is started to work through an ultrasonic detection host, and the data packaging starting header S is sent to the image processing module;

when a second ground induction coil of the first lane or the second lane has a signal that the vehicle leaves the vehicle weight information acquisition area and the first ground induction coil detector judges that no vehicle enters the first ground induction coil of the first lane or the second lane, a data packaging mark E is formed and the packaging end mark E is sent to the image processing module; otherwise, continuously detecting the second ground induction coils of the two lanes;

whether a vehicle enters or exits and the position of the vehicle are judged according to the ultrasonic detector, meanwhile, the ultrasonic detector is used as the basis for separating the vehicle, the ultrasonic detector continuously detects when no vehicle enters, and when the vehicle enters, the ultrasonic detector judges the lane where the vehicle passes, and the judging method comprises the following steps: if the receiving and sending time of the ultrasonic probe in the first lane is changed relative to the receiving and sending time from the ground, the vehicle is judged to be in the first lane; if only the transmitting and receiving time of the ultrasonic probe in the second lane is changed relative to the transmitting and receiving from the ground, the vehicle is judged to be in the second lane; if only the transmitting and receiving time of the lane-dividing ultrasonic probe is changed relative to the transmitting and receiving from the ground, the vehicle is judged to cross the lane and run near the center, and still runs in the first lane; if the receiving and sending time of the ultrasonic probe in the first lane and the lane dividing ultrasonic probe is detected to be changed relative to the receiving and sending time from the ground, the vehicle is judged to be in the first lane; if the receiving and sending time of the ultrasonic probe in the second lane and the lane dividing ultrasonic probe is detected to be changed relative to the receiving and sending time from the ground, the vehicle is judged to be in the second lane; if the receiving and sending time of the ultrasonic probe in the first lane and the receiving and sending time of the ultrasonic probe in the second lane are detected to be changed relative to the receiving and sending time from the ground, the fact that vehicles exist in the two lanes is judged; if the transmitting and receiving time of the three ultrasonic probes is changed, the vehicles are judged to be in two lanes; meanwhile, a counter of a corresponding lane vehicle counting system is added with 1 to serve as a vehicle information header, if a vehicle enters a first lane, the M in the M is added with 1, the vehicle information header of the vehicle entering the first lane after initialization is 1,1, if a vehicle enters a second lane, the N in the N is added with 1, and the vehicle information header of the vehicle entering the second lane for the first time after initialization is 2,1, the vehicle information header is sent to an image processor module, and the image processor module receives the vehicle information header and starts a camera of the corresponding lane to take a picture;

the weighing controller receives signals of the tire identifier through the tire identification controller, records the obtained wheel number and distance information and whether the vehicle has the behavior of crossing lanes during running, sets an axle number counter Z for counting the number of axles owned by each vehicle, adds 1 to the axle number counter Z under the corresponding vehicle information header, and records the triggering time; when the number of the wheels is one, the bicycle is judged to be inclined; when the wheels are distributed on the first lane and the lane boundary line, the vehicle is driven by the first lane single vehicle line pressing; when the wheels are distributed on a second lane and a lane boundary line, the vehicle in the second lane is pressed to run;

the weighing controller carries out load conversion on the voltage converted from the charge of the dynamic automobile scale by the received charge amplifier, places the load under an axle number counter Z, calculates the triggering time, calculates the speed of a corresponding axle according to the triggering time of the tire identification controller and the set distance between the tire identification controller and the axle number counter Z, and records the speed of the corresponding axle under the corresponding axle number counter Z; the weight obtained by processing the first lane first dynamic truck scale and the first lane second dynamic truck scale is set as W11 and W12, the weight obtained by processing the second lane first dynamic truck scale and the second lane second dynamic truck scale is set as W21 and W22, and when a vehicle runs in a lane, the first dynamic truck scale is the axle weight under the current axle number counter Z of the corresponding lane; when the vehicle runs across the lane, the axle weight of the current axle number counter Z is twice of the load collected by the first dynamic truck scale; when the vehicle has the behavior of driving with a pressure-separation lane line, the axle weight of the current axle number counter Z is twice of the value obtained by subtracting the load of the second dynamic truck scale of the current lane from the load collected by the first dynamic truck scale of the current lane; when the vehicles in other lanes are identified to have lane crossing behavior, the axle weight under the current axle number counter Z is the value obtained by subtracting the load of the second dynamic truck scale in the current lane from the load collected by the first dynamic truck scale in the current lane;

the load per axis calculation method is as follows: when the vehicle runs in the lane, the first dynamic truck scale is the axle weight under the current axle number counter Z of the corresponding lane, namely W1= W11, W2= W21; when the vehicle runs by one vehicle or two vehicles run by side and in a staggered mode and the lane crossing behavior is adopted: each axle weight of the first road vehicle weight is set to W1= W11+ W21 when the two wheels of the first road vehicle are on the lane boundary or on both sides; each axle weight of the vehicle weight of the second lane is set to W1= W11+ W21 when two wheels of the vehicle of the second lane are on or on both sides of the lane boundary;

when two lanes simultaneously have the vehicle to go flush, four wheels simultaneously pass through the tire recognizer, when two wheels of the first lane vehicle are on a lane boundary line, each axle weight of the first lane vehicle is set to be W1= (W11-W12) = 2, and each axle weight of the second lane vehicle is set to be W2= W21-W12; each axle weight of the first lane vehicle is set to W1= W11 × 2 and each axle weight of the second lane vehicle is set to W2= W21-W11 when the two wheels of the first lane vehicle are on both sides of the lane boundary; when two wheels of the second lane vehicle are on the lane boundary, each axle weight of the first lane vehicle is set to be W1= W11-W22, and each axle weight of the second lane vehicle is set to be W2= (W21-W22) × 2; when two wheels of the second lane vehicle are arranged on two sides of a lane dividing line, each axle weight of the first lane vehicle is set to be W1= W11-W21, and each axle weight of the second lane vehicle is set to be W2= W21 x 2;

whether a vehicle goes out is judged according to the ultrasonic detector, and the judgment standard is as follows: the time for the ultrasonic probe of the corresponding lane to receive and transmit the ultrasonic waves is the same as the time for the ground to receive and transmit the ultrasonic waves; continuing to calculate the weight per axle when the vehicle is not fully departing; if the vehicle leaves, the time for the ultrasonic probe to transmit and receive the ultrasonic waves is the same as the time for transmitting and receiving the ultrasonic waves to the ground, and the vehicle weight information of the whole vehicle is calculated;

weighing information (including the number of axles, the axle distance between the axles and the axles, the wheel distance between each axle, the load of each axle, the speed of each axle, the load of the whole vehicle and the average speed of the whole vehicle) is collected and recorded under a corresponding vehicle information header, if the vehicle is overweight, 1 is added under an overweight counter C and placed under the vehicle information header, then the collected data is sent to an image processing module, and an axle number technical device Z is returned to zero;

step four: the image processing module receives the header of the vehicle counter sent by the weighing controller, triggers the camera to take a picture according to the triggering quantity of the weighing controller, and stores the received picture data sent back by the camera in the header of the vehicle counter; the image processing module identifies the license plate information in the comparison sheet by applying an image processing algorithm and then stores the license plate information in a header of a vehicle counter; the image processing module receives the vehicle weight information character string with the header of the vehicle counter from the weighing controller, and sequentially arranges and fuses the pictures and the license plate information character string under the same vehicle counter;

step five: the image processing module receives a data packaging start-stop header sent by the vehicle weight controller, arranges and packages vehicle weight information within the time of the data packaging start-stop header according to the header of the vehicle counter, and sends the vehicle weight information to the server database through the network module;

the image processing module receives a packaging end mark E; the image processing module packs the stored matched vehicle weight with the vehicle information header and the image information in the time interval of the data packing header S and the packing end mark E;

step six: and (3) counting the real-time traffic flow on the server according to the value of the vehicle counter, counting the number of overloaded vehicles according to the value of the overweight counter, and counting the overload rate according to the ratio of the two.

And counting the real-time traffic flow on the server according to the sum of the values of M, N, counting the number of overloaded vehicles according to the value of C, and counting the overload rate according to the value of C/(M + N).

Furthermore, the ground induction coil adopts a standard high-temperature resistant tinned wire with the diameter of 0.75mm, the size of the wire is 2 meters long and 1 meter wide, and a cutting angle of 45 degrees and 20cm long is arranged on the angle. The distance between the coil and the roadside is 50cm, the coils are vertically overlapped and wound together, the number of turns is determined according to the total circumference, and the number of turns of the coils can be 4 or 5 when the circumference is 6 meters. The wire connecting the coil to the ground coil detector must be helically twisted (greater than 20 twists per meter). The induction coil creates a fixed reflected signal when receiving a fixed frequency pulse, forming a "resonant frequency", and the resonant frequency of the coil changes when a large amount of metal, such as a vehicle, comes close.

The earth induction coil detector is used for sending electric pulses to the coil and receiving reflected signals of the coil, when a large amount of metal is close to the coil, the resonance frequency of the coil detector and the coil is changed, the earth induction coil detector can detect the change, the change is recorded as the occurrence of the vehicle by the coil detector, and when one vehicle is detected, the relay is given voltage. The coil detector output can be set to be in a pulse mode or a existence mode, and in the pulse mode, only when a vehicle is just pressed on the coil or leaves the coil, a voltage signal is output to the relay, and the pulse mode is realized by setting rising edge trigger and falling edge trigger; in the presence mode, the relay may continuously output a high level by outputting a voltage to the relay as long as the output of the vehicle detector is detected to be always on. The invention adopts a pulse mode, outputs a signal when a vehicle presses a coil on the upstream along the driving direction, and outputs a level signal when the vehicle leaves the coil on the downstream along the driving direction (for forming a packaging file to transmit to a database, thereby saving the flow and improving the real-time property).

The ultrasonic detector is used for detecting whether a vehicle enters a detection area or leaves the detection area, can accurately detect the vehicles passing close to each other continuously, and comprises an ultrasonic probe and a host, wherein the probe for detecting the ultrasonic vehicles has the dual functions of transmitting and receiving and is arranged right above a road, and the ultrasonic probe continuously monitors the height of the road surface at the frequency of 10 to 50 times per second and receives reflected waves from the vehicles. When the vehicle passes under the probe, the return time of the detected reflected wave is obviously different, namely the existence of the vehicle can be sensed, and after the vehicle leaves, the return time of the ultrasonic wave received by the probe can recover the time of returning from the road surface. The ultrasonic probes are three in number and are respectively arranged in the centers of the inner lane and the outer lane and right above the lane boundary line.

The tire recognizer model is LZ-A, and is composed ofA certain number of modularized vehicle tire detection sensors arranged at certain intervals in sequence inA direction perpendicular to the vehicle traveling direction, the core component used by the tire recognizer isA vehicle tire detection sensor developed by the science and technology limited company, the wear-resistant rubber is used asA main material, and the tire recognizer is composed ofA shell,A conductive layer, an isolation layer,A circuit board printed with two grid electrodes,A lining core, an output cable and the like, and the output signal internal resistance is low: not more than 4 omega (including signal line resistance), the anti-interference ability is very strong. The weighing controller judges the width of the tire of the detected vehicle according to the number of signals detected when the vehicle passes through the tire identifier, so as to calculate the number of the tires of the passing vehicle. Meanwhile, since the vehicle tire detection sensors are sequentially arranged on one line side by side, the driving position of the driving vehicle can be judged according to the detected signals of the wheel axle sensors, whether the driving vehicle is on the corresponding lane or not, whether the driving vehicle has the behavior of lane changing or lane crossing, and the wheel track of the corresponding wheel can be determined according to the detected signal points. And when the tire identifier is installed, a standard distance is formed between the tire identifier and the dynamic truck scale and is set to be 0.2 m, the running speed is calculated by detecting the time difference of the first axle of the vehicle continuously passing through the tire identifier and the dynamic truck scale, or the average speed of the vehicle is calculated by integrating the speed of each axle.

The tire identification controller is connected with vehicle tire detection sensors in all the tire identifiers, and integrates the detected high-level signal positions, the detected high-level signal numbers and the detected time points into a character string and sends the character string to the weighing controller.

The dynamic truck scale adopts a KISTLER quartz crystal sensor in Switzerland, and takes a second generation dynamic weighing technology (WIM II) as an inner core. The quartz crystal sensor with the quartz crystal as the core component has better linear output, so that the linear relation between stress and charge can be well reflected, output signals are repeatedly weighed all the time, accurate weighing stability is ensured, no signal drift exists, and the calibration is easy. The quartz crystal sensor employed is insensitive to lateral side forces (forces other than vertically downward). The quartz crystal sensor is a long strip 70mm wide in appearance, and the length can be determined, so that the installation area is small. Compared with a bent plate type sensor and a piezoelectric film sensor, the effective bearing width is also narrowed, but the installation workload is small, and meanwhile, the quartz crystal sensor can completely detect the load applied to the quartz crystal when a single axle passes through, so that the weight of a single axle of a moving vehicle can be effectively detected. The dynamic motor weighers are four in total, two of the dynamic motor weighers occupy two lanes respectively, the other two dynamic motor weighers are 50cm long and are connected with each other on a broken line of the lane dividing, the arrangement directions of the four motor weighers are perpendicular to the driving direction, and the two long dynamic motor weighers and the two short dynamic motor weighers are connected with each other at the broken line of the lane dividing and are arranged side by side.

The charge amplifier can convert a piezoelectric charge signal generated by the precise quartz sensor into a voltage signal with a corresponding proportion, and output the voltage signal to the weighing controller.

The weighing controller fuses and sends information collected by the weighing system to the image processing module and determines whether to perform image recognition. Acquiring information of passing vehicles through a ground induction coil detector to establish marking information of start and stop of data packaging, and simultaneously using the marking information as a starting signal for starting other equipment; determining the information of complete vehicles passing through by an ultrasonic detector, establishing a header of weighing information of each vehicle and sending the header to an image processing module; the method comprises the steps of directly determining whether the vehicle has the behavior of driving across a lane, the wheel track of the vehicle, the number of axles and the time of each wheel passing through by signals transmitted by a tire recognizer, calculating corresponding axle weight information and the passing time by a proportional formula according to voltage signals transmitted by a charge amplifier, calculating the average driving speed of the vehicle by integrating a tire recognition controller, axle weight information converted from the voltage signals of the charge amplifier and the passing time, and calculating the wheel track of the vehicle and the weight of the whole vehicle by setting the distance between a dynamic truck scale and the tire recognizer. And determining whether the vehicle is overloaded by comparing the axle and the vehicle weight value defined in the vehicle type database, and then forming character information of whether the vehicle is overloaded.

And the camera adopts a ccd camera, and continuously shoots two pictures when receiving the shooting trigger signal, wherein the formed picture format is BMP.

The image processing module adopts a scheme of adding an embedded processor ARM and a digital signal processor DSP, the embedded processor is an S3C2410 embedded microprocessor based on an ARM920T inner core, the ARM is used as a main controller to control the photographing of a camera and the image acquisition and communication interface of an image sensor, and simultaneously, the fusion of symmetrical and heavy information and the packaging and sending of data are completed; the DSP completes the digital image processing algorithm and performs algorithm-level processing on the digital image.

The network module adopts an external 3G network module, is internally provided with a TCP/IP protocol stack, and transmits data after being communicated with a network server of a specific IP through a standard AT command set.

As shown in fig. 5, a detection area is arranged in the driving direction, the detection area covers two lanes, a ground induction coil is arranged at the beginning of the detection area, the centers of the inner lane and the outer lane of the ground induction coil are constructed, and the construction of the ground induction coil is constructed according to the conventional construction requirement; three ultrasonic probes are arranged at the center of an inner lane and an outer lane and at the position of a lane boundary line, the lower part of a ground sensing coil is arranged and is just above the ground position close to the ground sensing coil, a tire recognizer consisting of a row of vehicle tire detection sensors is paved on the whole road vertical to the driving direction under the ultrasonic probes, two dynamic motor balances which are parallel to the tire recognizer and cover the whole inner lane and the whole outer lane are arranged at a distance of 0.2 meter, two dynamic motor balances with the length of 0.5 meter are arranged at the lower part close to the two dynamic motor balances, and the four dynamic motor balances are spliced on the lane boundary line and can output four groups of charge information to a charge amplifier; the regional ground induction coil is arranged behind the second group of short dynamic automobiles and used for judging that the vehicle is out of a detection region, the camera is arranged above the center of the inner side road and the outer side road, and the position of the camera can be used for continuously and twice snapshotting when the vehicle is detected by the ultrasonic probe.

Each dynamic truck scale is connected with a charge amplifier, the charge amplifier is connected with a weighing controller, charge information of the dynamic truck scales is converted into corresponding voltage signals after being detected by the charge amplifier and then transmitted to the weighing controller, and the weighing controller forms a single-shaft load information character string for storage according to the ratio of the voltage signals to the internal setting; the ground induction coil is connected with the ground induction coil detector, and the ground induction coil detector is connected with the weighing controller;

the ground induction coil detector sends an electric pulse to the ground induction coil, the ground induction coil and a capacitor in the ground induction coil detector form a 'resonance frequency', when a large amount of metal passes through, the resonance frequency changes and is detected by the ground induction coil, the ground induction coil detector is connected with the weighing controller, the ground induction coil detector sends a switching value to the weighing controller to serve as a judgment standard for detecting that a vehicle enters a detection area or leaves the detection area, and the weighing controller establishes a start header and an end header of data packaging according to the judgment;

the tire recognizer is connected with the tire recognition controller, the tire recognition controller is connected with the weighing controller, the tire recognition controller judges the number of tires, the distance between the tires and the condition whether the tires have pressure or cross-lane driving according to the switching value sent by the tire recognizer, and simultaneously records the triggering time and transmits the information to the weighing controller;

the ultrasonic detection host machine judges whether a vehicle passes according to the time for the ultrasonic probe to receive and transmit ultrasonic waves and sends the information of the vehicle passing to the weighing controller, the weighing controller determines whether to establish a header of a data packet of matching information of each vehicle according to the detection result of the ultrasonic waves, and sends the header to the image processing module when the header is established, and meanwhile, the camera is started to take a picture;

the camera is connected with the image processing module, and the image processing module is also connected with the weighing controller and the network module;

the weighing controller is connected with the charge amplifier, the ultrasonic detection host, the geomagnetic coil detector, the tire recognition controller and the image processor, the weighing controller integrates the vehicle weight information of the vehicle under the header of a data packet of corresponding vehicle matching information according to information transmitted by each module, then the vehicle weight information with the vehicle information header is sent to the image processing module, the camera continuously takes pictures at two sides according to the command of the image processing module and then transmits the picture information back to the image processing module, the image processing module recognizes the picture information and integrates the recognized license plate information (including license plate number and license plate color) with the corresponding picture and the header information;

the network communication module is directly connected with the image processing module, is connected with a corresponding server through an instruction of the image processing module, and sends a result obtained by processing of the image processing module to the server.

Claims

1. The utility model provides a system that vehicle weight information acquisition and matching do not stop which characterized in that: the system comprises a lane weight information monitoring module (1000), a tire identification module (2000), an ultrasonic monitoring module (3000) and an information processing module (4000);

the lane weight information monitoring module (1000) is respectively connected with the ultrasonic monitoring module (3000) and the information processing module (4000); the tire identification module (2000) and the ultrasonic monitoring module (3000) are respectively connected with the information processing module (4000);

the lane weight information monitoring module (1000) is responsible for collecting signals when vehicles pass through by equipment in the unit and feeding back lane weight information data packets to the rear-stage module; the lane weight information data packet contains vehicle entering time information, vehicle wheel passing time information, weight information of each axle, vehicle photo data and a vehicle leaving signal; the lane weight information monitoring module (1000) comprises more than 2 lane information monitoring units;

the tire identification module (2000) is responsible for collecting the passing time of the wheel and the position information of the wheel;

the ultrasonic monitoring module (3000) is responsible for determining the starting and stopping time of the single vehicle and whether the vehicle has the behavior of crossing the lane;

the information processing module (4000) is responsible for processing data of the lane weight information monitoring module (1000), the tire identification module (2000) and the ultrasonic monitoring module (3000), determining accurate weight information of a single vehicle at a corresponding position, and forwarding the weight information to the server;

the lane vehicle weight information monitoring module (1000) comprises more than one lane information monitoring unit; each lane information monitoring unit comprises a lane central ultrasonic probe, a first ground induction coil detector, a first dynamic truck scale, a second ground induction coil detector, a second dynamic truck scale and a camera; wherein,

the output end of the first ground induction coil is connected with the input end of the first ground induction coil detector; the output end of the second ground induction coil is connected with the input end of the second ground induction coil detector; the output end of the first ground induction coil detector, the output end of the first dynamic truck scale, the output end of the second ground induction coil detector, the output end of the second dynamic truck scale and the camera are respectively connected with the input end of the information processing module (4000); the output end of the ultrasonic probe in the center of the lane is connected with the input end of the ultrasonic monitoring module (3000);

the camera is responsible for receiving the control signal of the information processing module (4000) to take pictures twice and transmitting the picture data to the information processing module (4000).

2. The system for acquiring and matching the vehicle weight information of the non-stop vehicle as claimed in claim 1, wherein: the model of the central ultrasonic probe is DDY1CJC 1; the first ground induction coil and the second ground induction coil are wound by high-temperature resistant tinned wires with the diameter of 0.75 mm; the first ground induction coil and the second ground induction coil are both 2 meters long and 1 meter wide; cutting angles of 45 degrees and 20cm long are respectively formed at four corners of the first ground induction coil and the second ground induction coil; the models of the first ground induction coil detector and the second ground induction coil detector are LD102 single-channel coil vehicle detectors of Shanghai De Hui electronics; the models of the first dynamic truck scale and the second dynamic truck scale are GBS-30DZ dynamic truck scales; the first dynamic truck scale and the second dynamic truck scale comprise quartz crystal sensors, cables, charge amplifiers and weighing controllers; the camera is available in the form of DS-2CD986A available from haokangwei.

3. The system for acquiring and matching the vehicle weight information of the non-stop vehicle according to claim 1 or 2, wherein:

the lane weight information monitoring module (1000) comprises 2 lane information monitoring units which are respectively marked as a first lane information monitoring unit (1100) and a second lane information monitoring unit (1200);

the first lane information monitoring unit (1100) comprises a first lane central ultrasonic probe (1101), a first lane first ground induction coil (1102), a first lane first ground induction coil detector (1103), a first lane first dynamic truck scale (1104), a first lane second ground induction coil (1106), a first lane second ground induction coil detector (1107), a first lane second dynamic truck scale (1108) and a first lane camera (1109);

the second lane information monitoring unit (1200) comprises a second lane central ultrasonic probe (1201), a second lane first ground induction coil (1202), a second lane first ground induction coil detector (1203), a second lane first dynamic truck scale (1204), a second lane second ground induction coil (1206), a second lane second ground induction coil detector (1207), a second lane second dynamic truck scale (1208) and a second lane camera (1209);

the first lane information monitoring unit (1100) is arranged on a lane, wherein a ground induction coil frequency change signal of a first ground induction coil (1102) of the first lane, a ground induction coil frequency change signal of a second ground induction coil (1106) of the first lane, an ultrasonic probe transceiving time change signal of a central ultrasonic probe (1101) of the first lane, a voltage signal of a first dynamic truck scale (1104) of the first lane and a voltage signal of a second dynamic truck scale (1108) of the first lane are transmitted and received by the ultrasonic probe;

the second lane information monitoring unit (1200) is arranged on an adjacent lane and is responsible for feeding back a ground induction coil frequency change signal of a first ground induction coil (1202) of a second lane, a ground induction coil frequency change signal of a second ground induction coil (1206) of the second lane, a receiving and sending time change signal of an ultrasonic probe of a central ultrasonic probe (1101) of the first lane, a voltage signal of a first dynamic truck scale (1204) of the second lane and a voltage signal of a second dynamic truck scale (1208) of the second lane on the lane;

the tire identification module (2000) comprises a tire identifier (2100) and a tire identification controller (2200); the tire recognizer (2100) is connected with the information processing module (4000) through a tire recognition controller (2200);

the ultrasonic monitoring module (3000) comprises an inter-road ultrasonic probe (3100) and an ultrasonic detection host (3200); the inter-road ultrasonic probe (3100) is arranged at a boundary position of the first lane and the second lane and is responsible for detecting a time change signal transmitted and received by the ultrasonic probe when a single vehicle travels across lanes, namely, a vehicle signal which cannot be detected by a lane central ultrasonic probe of a lane weight information monitoring unit in the first lane and the second lane when the vehicle travels across lanes is detected; the road ultrasonic probe (3100) is connected with the information processing module (4000) through the ultrasonic detection host (3200).

4. The system for acquiring and matching the vehicle weight information of the non-stop vehicle as claimed in claim 3, wherein: the model of the tire recognizer (2100) is an LZ-A tire recognizer of the Splendid technology; the model of the road ultrasonic probe (3100) is DDY1CJC1 ultrasonic probe; the model of the ultrasonic detection host (3200) is DDY1CJC1 ultrasonic detection host.

5. The system for acquiring and matching the vehicle weight information of the non-stop vehicle as claimed in claim 3, wherein:

the information processing module (4000) comprises a first camera (4100), a second camera (4200), a first single chip microcomputer (4100), a second single chip microcomputer (4200) and a network communication processing module (4300); wherein,

the first camera (4100), the second camera (4200), the first single chip microcomputer (4100) and the network communication processing module (4300) are respectively connected with the second single chip microcomputer (4200);

the first single chip microcomputer (4100) is respectively connected with the tire identification controller (2200), the first lane information monitoring unit (1100), the second lane information monitoring unit (1200) and the ultrasonic detection host (3200); the method comprises the steps that the first single chip microcomputer (4100) respectively obtains the number and position information of tires fed back by a tire identification controller (2200), the voltage values corresponding to the passing time and the tire load of all tires on a first lane fed back by a first lane information monitoring unit (1100), the passing time and the voltage values corresponding to the tire load of all tires on a second lane fed back by a second lane information monitoring unit (1200), and switching value data formed by ultrasonic receiving and sending time changes reflecting vehicle entering and leaving fed back by an ultrasonic detection host (3200), and the switching value data are transmitted to the second single chip microcomputer (4200);

a camera (1109) in the first lane information monitoring unit (1100) is responsible for shooting license plate pictures of vehicles on a lane where the first lane information monitoring unit (1100) is located and feeding back the license plate pictures to the second single chip microcomputer (4200);

a camera (1209) in the second lane information monitoring unit (1200) is responsible for shooting license plate pictures of vehicles on a lane where the second lane information monitoring unit (1200) is located, and feeding back the license plate pictures to the second single chip microcomputer (4200);

the first single chip microcomputer (4100) is a weighing controller and is responsible for sending a photographing control signal to the second single chip microcomputer and judging and summarizing data of the front sensor; the processing result of the first single chip microcomputer (4100) is transmitted to the second single chip microcomputer (4200) for further processing;

the second single chip microcomputer (4200) is an image processing module and is responsible for receiving the photographing control signal of the first single chip microcomputer, controlling the camera to photograph, recognizing the license plate of the photograph and storing the license plate information under the corresponding vehicle weight information;

the network communication processing module (4300) is responsible for transmitting the processing result of the second singlechip (4200) to the remote server.

6. The system for acquiring and matching the vehicle weight information of the non-stop vehicle as claimed in claim 3, wherein:

a system for acquiring and matching the weight information of the non-stop vehicle is arranged on a one-way double lane; recording one lane of the one-way double lanes as a first lane and recording the other lane as a second lane;

a first lane information monitoring unit (1100) is arranged on the first lane; a second lane information monitoring unit (1200) is arranged on the second lane; a tire recognizer (2100) is arranged on the first lane and the second lane together; an inter-road ultrasonic probe (3100) is provided between the first lane and the second lane; wherein,

a first lane channel first ground induction coil (1002), a first lane central ultrasonic probe (1101), a first lane first dynamic truck scale (1104), a first lane second dynamic truck scale (1108), a first lane second ground induction coil (1106) and a first lane camera (1109) are sequentially arranged in the traveling direction of a first lane;

a second lane first ground induction coil (1202), a second lane central ultrasonic probe (1201), a second lane first dynamic truck scale (1204), a second lane second dynamic truck scale (1208), a second lane second ground induction coil (1206) and a second lane camera (1209) are sequentially arranged in the driving direction of a second lane;

the installation positions of a first lane first ground induction coil (1102), a first lane central ultrasonic probe (1101), a first lane first dynamic truck scale (1104), a first lane second ground induction coil (1106), a first lane second dynamic truck scale (1108), a first lane second ground induction coil (1106) and a first lane camera (1109) are respectively aligned with the installation positions of a second lane first ground induction coil (1202), a second lane central ultrasonic probe (1201), a second lane first dynamic truck scale (1204), a second lane second dynamic truck scale (1208), a second lane second ground induction coil (1206) and a second lane camera (1209);

the mounting location of the tire identifier (2100) is in the region between the first lane central ultrasound probe (1101) and the first lane first dynamic truck scale (1004);

the inter-road ultrasonic probe (3100) is installed at the boundary of a first lane and a second lane, and the installation position of the inter-road ultrasonic probe (3100) is flush with the installation position of a first lane central ultrasonic probe (1101) and the installation position of a second lane central ultrasonic probe (1201);

the system comprises a first lane first ground induction coil detector (1103), a first lane first charge amplifier (1105), a first lane second ground induction coil detector (1107), a second lane first ground induction coil detector (1203), a second lane first charge amplifier (1205), a second lane second ground induction coil detector (1207), a first single chip microcomputer (4100), a second single chip microcomputer (4200), a network communication processing module (4300), a tire identification controller (2200) and an ultrasonic detection host (3200), wherein the first lane first ground induction coil detector, the second lane first charge amplifier, the second lane second ground induction coil detector, the first single chip microcomputer (4100), the second single chip microcomputer (4200), the network communication processing module (4300).

7. The method for collecting and matching the vehicle weight information of the non-stop vehicle as claimed in any one of claims 1 to 6 is characterized in that: the method comprises the following steps:

8. The acquisition and matching method of the system for acquiring and matching the weight information of the non-stop vehicle according to claim 7, wherein the method comprises the following steps:

step 1: detecting whether a vehicle enters:

according to the information detected in the first lane information monitoring unit (1100) and the second lane information monitoring unit (1200) in the lane information monitoring module (1000)

Judging whether a vehicle enters or not through a reflection signal of a first road first ground induction coil (1102) connected with a first road first ground induction coil detector (1103) and a reflection signal of a second road first ground induction coil (1202) connected with a second road first ground induction coil detector (1203), and if not, continuously detecting; if the reflected signal of the first ground induction coil (1102) of the first lane and/or the reflected signal of the first ground induction coil (1202) of the second lane changes, the vehicle enters, and the step 2 is carried out;

a switching value into which a change of a reflection signal of the first lane first ground induction coil detector (1103) is converted by the first lane first ground induction coil detector (1103);

a switching value into which a change in a reflected signal of the second lane first ground induction coil detector (1203) is converted by the second lane first ground induction coil detector (1203);

the first single chip microcomputer (4100) receives the switching value fed back by the first ground induction coil detector (1103) of the first lane and the switching value fed back by the first ground induction coil detector (1203) of the second lane, and therefore the fact that the vehicle enters the corresponding lane is judged; when the first single chip microcomputer (4100) determines that a vehicle enters, a vehicle data packet is established, vehicle weight information is ready to be received, and then the step 3 is carried out;

the method comprises the steps that the ultrasonic detection host (3200) detects the transmitting and receiving time of a first lane central ultrasonic probe (1101), a second lane central ultrasonic probe (1201) and/or an inter-road ultrasonic probe (3100), determines which ultrasonic probes feed back the change of the transmitting and receiving time, the ultrasonic detection host (3200) sends the detection result to a first single chip microcomputer (4100), and the first single chip microcomputer (4100) judges the number of vehicles and the lane to which the vehicles belong;

the first single chip microcomputer (4100) sets a single vehicle data packet according to the judged number of the vehicles and the result of the lane to which the vehicles belong and sends the single vehicle data packet to the second single chip microcomputer (4200); the second singlechip (4200) starts the corresponding first lane camera (1109) and/or second lane camera (1209) to take pictures:

if the first lane has a car, starting a first lane camera (1109);

if the second lane has a vehicle, starting a second lane camera (1209);

if both lanes have cars, starting a first lane camera (1109) and a second lane camera (1209);

if the vehicle is driving across lanes, starting a first lane camera (1109) and a second lane camera (1209);

the second singlechip (4200) identifies the license plate color and characters of the picture, and simultaneously, the step 5 is carried out;

the tire identification module (2000) detects the wheel position and the wheel passing time of the vehicle, generates a digital position sequence and feeds the digital position sequence back to the first single chip microcomputer (4100), the first single chip microcomputer (4100) decodes the sequence to obtain the wheel number and the wheel position, and then the running condition of the vehicle wheel is judged:

subsequently, go to step 6;

step 6: selecting an axle weight calculation method:

step 6.1: when the vehicle runs in the lane, the weighing result of the first dynamic truck scale (1104) of the first lane and/or the first dynamic truck scale (1204) of the second lane is the axle load of the current axle of the vehicle on the corresponding lane;

step 6.2: when the vehicle presses the line and the number of tires in the lane is 1, for the vehicle to run, the measured axle weight of the axle is twice of the difference value of a first dynamic truck scale (1104) of the first lane and a second dynamic truck scale (1108) of the first lane or twice of the difference value of a first dynamic truck scale (1204) of the second lane and a second dynamic truck scale (1208) of the second lane;

in other words, the feedback value is (the value fed back by the first lane first dynamic vehicle scale (1104) and the value fed back by the second lane first dynamic vehicle scale (1204) × 2-the value fed back by the first lane second dynamic vehicle scale (1108), or (the value fed back by the first lane first dynamic vehicle scale (1104) and the value fed back by the second lane first dynamic vehicle scale (1204) × 2-the value fed back by the second lane second dynamic vehicle scale (1208));

step 6.3.1: when the bicycle runs across the lane, the measured axle weight of the axle is the sum of two first dynamic motor weighers (1004);

in other words, the value fed back by the first lane first dynamic truck scale (1104) is + the value fed back by the second lane first dynamic truck scale (1204);

in other words, a value of 2 is fed back to the first dynamic truck scale (1104) of the first lane, or a value of 2 is fed back to the first dynamic truck scale (1204) of the second lane;

step 6.3.3: the weight of the axle of the vehicle measured is the value of the first dynamic truck scale (1004) of the current lane minus the value of the first dynamic truck scale (1004) of the other lane;

in other words, the value fed back by the first lane first dynamic truck scale (1104) -the value fed back by the second lane first dynamic truck scale (1204), or the value fed back by the second lane first dynamic truck scale (1204) -the value fed back by the first lane first dynamic truck scale (1104);

step 6.4: the weight of the axle of the vehicle is measured as the sum of four values of two first dynamic motor balances (1004) measured twice in succession;

in other words, the value fed back for the first time by the first lane first dynamic vehicle scale (1104), the value fed back for the second time by the first lane first dynamic vehicle scale (1104), the value fed back for the first time by the second lane first dynamic vehicle scale (1204), and the value fed back for the second time by the second lane first dynamic vehicle scale (1204) are obtained;

and 7: judging whether the vehicle completely passes:

and 8: vehicle weight information summarization and matching:

the method comprises the steps that the first single chip microcomputer (4100) collects vehicle weight information of all axles, the vehicle speed is calculated according to the triggering time and the distance between the tire recognizer (2100) and the first dynamic vehicle scale (1104) of the first lane and the triggering time and the distance between the tire recognizer and the first dynamic vehicle scale (1204) of the second lane, the vehicle distance is estimated, the vehicle length is calculated according to the change of the receiving and sending time of the ultrasonic probe, data are sent to the second single chip microcomputer (4200), and the second single chip microcomputer (4200) matches the recognized license plate information with the vehicle weight information sent by the first single chip microcomputer;

and step 9: determining whether all entering vehicles have left:

step 10: and the second singlechip (4200) packs the single vehicle information packets in all the single vehicle information packets, sends the single vehicle information packets to the server through the network communication module (4300), returns to the step 1, and prepares for next vehicle information acquisition and matching.

9. The method for collecting and matching the vehicle weight information of the non-stop vehicle as claimed in any one of claims 1 to 6 is characterized in that:

step two: the first lane weight information monitoring unit and the second lane weight information monitoring unit convert frequency changes of first and second ground induction coils in respective units into switching values, convert charge information of a quartz crystal sensor in a first dynamic truck scale and a second dynamic truck scale into voltage information, transmit the voltage information to a weighing controller, and send ultrasonic transceiving action signals of an ultrasonic probe in the center of a lane to an ultrasonic detection host; the ultrasonic detection host judges whether the ultrasonic receiving and transmitting time is different from the receiving and transmitting time of the ground through ultrasonic receiving and transmitting action signals of the ultrasonic probes at the centers of the first lane and the second lane and the lane-dividing ultrasonic probes, and sends a judgment result to the weighing controller; the tire identification controller converts the trigger signal obtained from the tire identifier into a digital sequence and sends the digital sequence to the weighing controller;

weighing information, including the number of axles, the axle distance between the axles and the axles, the wheel distance between each axle, the load of each axle, the speed of each axle, the load of the whole vehicle and the average speed of the whole vehicle, is collected and recorded under a corresponding vehicle information header, if the vehicle is overweight, 1 is added under an overweight counter C and placed under the vehicle information header, then the collected data is sent to an image processing module, and an axle number technical device Z is reset to zero;

step six: the real-time traffic flow is counted on the server according to the value of a vehicle counter, the number of overloaded vehicles is counted according to the value of an overweight counter, and the overload rate is counted according to the ratio of the two values;