Vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission

Abstract

The utility model provides a vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission, which comprises a power supply system, a cloud platform and a weighing acquisition instrument, and is characterized in that the weighing acquisition instrument comprises a data processing module, a piezoelectric film sensor assembly, a counting coil, a vehicle detector, a thermometer and a GPRS module; a downloading interface, an RS232 interface, an SD card interface, an internet access and dial switch, an operation indicating lamp, a power indicator and a plurality of BNC interfaces are arranged on the front face of the data processing module shell, and a power interface, a temperature sensor interface and a plurality of lane interfaces are arranged on the back face of the data processing module shell. According to the vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission, the piezoelectric film sensor, the counting coil and the thermometer which are installed on a road are utilized to acquire signals, the collected signals are processed and packaged to the GPRS module through an internal algorithm of the data processing module, the GPRS module transmits data to the cloud platform in a wireless mode, and the cloud platform transmits the data to the vehicle dynamic weighing acquisition instrument system. Therefore, a wireless transmission function is realized, and road information can be remotely monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of road vehicle overweight detection, in particular to a vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission. Background Art

[0002] The load of the vehicle has a very important impact on the service life of the road. When a vehicle is overloaded and driving on the road, it will cause damage to the road. In addition, an overloaded vehicle will easily deviate from the vehicle's own set stability when turning, bringing certain driving safety hazards. Therefore, it is necessary to install a vehicle weighing detection device on the road to detect the load and speed information of vehicles driving on the road, and to manage overloaded vehicles.

[0003] In the existing technology, dynamic weighing collection systems are mostly wired connections, which are complicated to construct and do not require vehicle information to be displayed on an industrial computer, thereby increasing the investment cost of the entire system. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a vehicle dynamic weighing collection instrument system based on GPRS wireless transmission, aiming to solve the technical problem of complex construction caused by the weighing collection system in the prior art being connected to the industrial computer through a wired connection.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a vehicle dynamic weighing collector system based on GPRS wireless transmission, which is used for monitoring the weighing data of vehicles on the road, including a power supply system, a weighing collector and a cloud platform, the weighing collector including a data processing module, and a piezoelectric film sensor component electrically connected to one end of the data processing module, the piezoelectric film sensor component including a first piezoelectric film sensor and a second piezoelectric film sensor, the first piezoelectric film sensor and the second piezoelectric film sensor are arranged in sequence at right angles to the direction of road travel, the weighing collector also includes a thermometer electrically connected to one end of the data processing module, the thermometer is installed close to one side of the piezoelectric film sensor component, the dynamic weighing collector system also includes a GPRS module electrically connected to one end of the data processing module, and the GPRS module is connected to the cloud platform via a wireless signal.

[0006] Compared with the prior art, the beneficial effect of the utility model lies in: through the above-mentioned design scheme, the signals collected by the piezoelectric film sensor assembly and the counting coil are transmitted to the load-bearing collector, the load-bearing collector processes the data and packs it for the first time through the internal circuit board algorithm, and then inputs the first packaged data into the GPRS module, the GPRS module packs the data for the second time, and sends it to the cloud platform through wireless transmission. After receiving the data, the cloud platform analyzes and displays the data, so as to monitor the axle group, wheelbase, weight, speed and road traffic flow of the vehicle on the detected road in real time. In addition, a thermometer for collecting road temperature is arranged on one side of the piezoelectric film sensor, and the temperature information collected by the thermometer is used to correct the signal data of the piezoelectric film sensor assembly through the algorithm, so that the vehicle information collected by the utility model is more accurate.

[0007] According to one aspect of the above technical solution, the weighing collector further includes a counting coil arranged in the middle of the road, and the counting coil is arranged on one side of the first piezoelectric film sensor or the second piezoelectric film sensor.

[0008] According to one aspect of the above technical solution, the weighing collector further includes a vehicle detector for processing the signal acquired by the counting coil, and the vehicle detector is electrically connected to one side of the data processing module.

[0009] According to one aspect of the above technical solution, a shell is provided outside the data processing module, and a download interface, RS232 interface, SD card interface, network port, dip switch, operation indicator light, power indicator light and several BNC interfaces are provided on the front of the shell.

[0010] According to one aspect of the above technical solution, a power supply interface, a temperature sensor interface and a plurality of lane interfaces are provided on the back side of the shell.

[0011] According to one aspect of the above technical solution, the counting coil is installed in the middle of both sides of the road, and the counting coil is installed near both sides of the first piezoelectric film sensor or the second piezoelectric film sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a modular schematic diagram of a vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission in the first embodiment of the utility model;

[0013] Figure 2 This is a front view of the housing of the weighing collector in the first embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the reverse side of the weighing and collecting instrument housing in the first embodiment of the utility model;

[0015] Figure 4This is a schematic diagram of the installation of a set of piezoelectric film sensor components, a counting coil and a thermometer in the first embodiment of the utility model;

[0016] Figure 5 This is a signal diagram of the piezoelectric film sensor in the first embodiment of the utility model;

[0017] Figure 6 This is a schematic diagram of the installation of two sets of piezoelectric film sensor components, counting coils and thermometers in the first embodiment of the utility model;

[0018] Description of main component symbols: 1-data processing module, 11-download interface, 12-RS232 interface, 13-SD card interface, 14-network port, 15-dip switch, 16-operation indicator light, 17-power indicator light, 18-BNC interface, 19-power interface, 110-temperature sensor interface, 111-first lane interface, 112-second lane interface, 2-piezoelectric film sensor assembly, 21-first piezoelectric film sensor, 22-second piezoelectric film sensor, 23-third piezoelectric film sensor, 24-fourth piezoelectric film sensor, 3-counting coil, 4-vehicle inspection device, 5-thermometer, 6-GRPS module, 7-cloud platform, 8-power supply system;

[0019] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] See also Figure 1 The first embodiment of the utility model provides a vehicle dynamic weighing collector system based on GPRS wireless transmission, which is used for monitoring the weighing data of vehicles on the road, including a power supply system 8, a weighing collector and a cloud platform 7. The weighing collector includes a data processing module 1, and a piezoelectric film sensor component 2 electrically connected to one end of the data processing module 1, the piezoelectric film sensor component 2 includes a first piezoelectric film sensor 21 and a second piezoelectric film sensor 22, the first piezoelectric film sensor 21 and the second piezoelectric film sensor 22 are arranged in sequence perpendicular to the road driving direction, the weighing collector also includes a thermometer 5 electrically connected to one end of the data processing module 1, the thermometer 5 is installed close to one side of the piezoelectric film sensor component 2, the dynamic weighing collector system also includes a GPRS module 6 electrically connected to one end of the data processing module 1, and the GPRS module 6 is connected to the cloud platform 7 through a wireless signal.

[0024] In this embodiment, the interval between the first piezoelectric film sensor 21 and the second piezoelectric film sensor 22 can be set to between 3-5m. The specific spacing facilitates accurate calculation of the time difference between the first piezoelectric film sensor 21 and the second piezoelectric film sensor 22, thereby accurately calculating the instantaneous speed of the vehicle passing over the piezoelectric film sensor assembly 2; and in this embodiment, the spacing is set to 5m.

[0025] In this embodiment, the weighing collector includes a counting coil 3 and a vehicle detector 4, wherein the counting coil 3 is mainly used to record the traffic flow information of the road. Each time a vehicle passes through the counting coil 3, the counting coil 3 triggers an induction and records data once. It can be understood that the counting coil 3 can be installed at any position in the middle of the road; however, in order to facilitate construction, the counting coil 3 is installed on both sides close to the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22, mainly to form a connecting line connecting the counting coil 3 with the vehicle detector 4 and the connecting line connecting the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22 with the data processing module 1 into a strand, which is laid and installed together, which is convenient for construction and later maintenance. Preferably, the weighing collector also includes a counting coil 3 arranged in the middle of the road, and the counting coil 3 is arranged on one side of the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22; and the vehicle detector 4 receives and processes the signal of the counting coil 3, and transfers the processed data information to the data processing module 1 for processing and packaging. It can be understood that the weighing collector also includes a vehicle detector 4 for processing the signal obtained by the counting coil 3, and the vehicle detector 4 is electrically connected to one side of the data processing module 1.

[0026] In this embodiment, since the piezoelectric film sensor assembly 2 is installed on the road, the high temperature of the road surface has a certain deviation effect on the signal collection of the piezoelectric film sensor assembly 2. For this reason, it is necessary to install a thermometer 5 close to the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22. By collecting the temperature signal and then using an algorithm in the weighing collector, the data collected by the piezoelectric film sensor assembly 2 is corrected accordingly, so that the measurement accuracy is higher. Specifically, the thermometer 5 is installed on the road close to the piezoelectric film sensor assembly 2.

[0027] See also Figure 2 , which is a front view of the shell of the data processing module 1. In this embodiment, there are thirty-two BNC interfaces 18, which are divided into four groups, each group including eight BNC interfaces 18, wherein each group corresponds to one lane. It can be understood that the utility model can process the detection data of four lanes at the same time; however, it should be noted that, starting from the end of each group of lanes, two adjacent BNC interfaces 18 are connection interfaces corresponding to a pair of piezoelectric film sensor assemblies 2, such as: the eight BNC interfaces 18 of the first group are classified into No. ①-⑧, then No. ① and No. ② are a pair, No. ③ and No. ④ are a pair, and so on, and when connected, No. ① is connected to the first piezoelectric film sensor 21, and No. ② is connected to the second piezoelectric film sensor 22. In this embodiment, only one pair of piezoelectric film sensor components 2 is installed in each lane, and a pair of BNC interfaces 18 are used. As can be seen from the figure, a download interface 11, an RS232 interface 12, an SD card interface 13, a network port 14 and a dial switch 15 are also provided in this embodiment, wherein the download interface 11 is used for later firmware upgrades; the RS232 interface 12; the SD card interface 13 are reserved interfaces, and the network port 14 is used to connect to an industrial computer to realize wired road information monitoring; the dial switch 15 is used to control data download dialing, and this interface is a reserved expansion interface; specifically, the data processing module 1 is provided with a shell on the outside, and the download interface 11, the RS232 interface 12, the SD card interface 13, the network port 14, the dial switch, the operation indicator light 16, the power indicator light 17 and several BNC interfaces 18 are provided on the front of the shell.

[0028] See also Figure 3 , which is the back view of the shell of the data processing module 1, wherein two lane interfaces are provided, each lane interface can input data signals of two lane counting coils 3, for example: the first lane interface 111 can be used for lanes 1 and 2, and the second lane interface 112 can be used for lanes 3 and 4; there are also a power interface 19 for connecting a power source and a temperature sensor interface 110 for data transmission electrically connected to a temperature sensor; it can be seen that the back side of the shell is provided with a power interface 19, a temperature sensor interface 110 and several lane interfaces.

[0029] See also Figures 4 to 5 In this embodiment, a three-axle rear eight-wheel vehicle is taken as an example;

[0030] Figure 5 In a, t1 is the signal generated when the first axis of the vehicle presses over the first piezoelectric film sensor 21;

[0031] Figure 5 In a, t2 is the signal generated when the second shaft of the vehicle presses over the first piezoelectric film sensor 21;

[0032] Figure 5 In a, t3 is the signal generated when the bottom of the vehicle passes through the first piezoelectric film sensor 21 in three axes;

[0033] Figure 5 In b, t4 is the signal generated when the first shaft of the vehicle presses over the second piezoelectric film sensor 22;

[0034] Figure 5 b) t5 is the signal generated when the second shaft of the vehicle presses over the second piezoelectric film sensor 22;

[0035] Figure 5 In b, t6 is the signal generated when the bottom of the vehicle passes through the second piezoelectric film sensor 22 in three axes;

[0036] It can be seen that the vehicle speed v can be calculated by the time difference of t4-t1 or t5-t2 or t6-t3, such as: v=5 / t3-t1 or v=5 / t4-t2 or v=5 / t6-t3;

[0037] Then, the obtained speed v is used to calculate the wheelbase L through t3-t1 or t6-t4, such as: L=v*t3-t1 or L=v*t6-t4;

[0038] The axis group can be calculated by the number of times the signal is generated by pressing the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22;

[0039] The vehicle weight can be calculated by using the voltage signal generated by pressing the first piezoelectric film sensor 21 or the second piezoelectric film sensor 22, and then using an algorithm to calculate the vehicle weight. It should be noted that the weight calculation also needs to be combined with the information collected by the thermometer 5 to obtain the final weight value.

[0040] Working principle: When the system works normally, the counting coil 3 transmits the collected signal to the vehicle inspection device 4, which processes and converts the signal received by the counting coil 3 and inputs it to the weighing collector. At the same time, the piezoelectric film sensor component 2 transmits the collected signal information to the data processing module 1 for processing. During the processing, the data processing module 1 processes the temperature information collected by the thermometer 5, and makes corresponding corrections to the information of the piezoelectric film sensor component 2 according to the temperature information, and finally calculates the wheelbase, axle group, vehicle speed and total vehicle weight of the vehicle. Finally, the calculated data results are packaged for the first time and input to the GPRS module 6. The GPRS module 6 is packaged for the second time and sent to the cloud platform 7 through wireless signals. After receiving the data, the cloud platform 7 can process and display it. It should be supplemented that the dynamic weighing system of the utility model is also provided with an image recognition module, through which the license plate information is recognized, so that the previously collected and processed information is specific to the vehicle information group of the specific license plate number, so that overloaded and speeding vehicles can be tracked and punished.

[0041] In summary, the vehicle dynamic weighing collector system based on GPRS wireless transmission in the above embodiments of the utility model collects the time, pressure, number of times the vehicle passes through and the temperature information of the road by installing a piezoelectric film sensor component, a thermometer and a counting coil on the road, and then calculates the basic information of the vehicle through the internal algorithm of the weighing collector. The information is then packaged and transmitted to the GPRS module for the first time. The GPRS module packages the data for the second time and sends it to the cloud platform wirelessly, thereby realizing cloud-based monitoring of road information without the need to install an industrial computer, making the construction of this new type convenient and low-cost.

[0042] Please refer to Figure 6 , shown is the second embodiment of the vehicle dynamic weighing collector system based on GPRS wireless transmission of the utility model. In order to improve the accuracy of the data, two groups of piezoelectric film sensor components 2 are installed on each road in this embodiment, wherein the second group of piezoelectric film sensor components 2 includes a third piezoelectric film sensor 23 and a fourth piezoelectric film sensor 24. The second group of piezoelectric film sensor components 2 can be installed between the first piezoelectric film sensor 21 and the second piezoelectric film sensor 22, or can be installed on both sides of the first piezoelectric film sensor 21 and the second piezoelectric film sensor component 2 respectively.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A vehicle dynamic weighing data collection system based on GPRS wireless transmission, used for monitoring the weighing data of vehicles on the road, including a power supply system, characterized in that: It also includes a weighing collector and a cloud platform. The weighing collector includes a data processing module and a piezoelectric film sensor assembly electrically connected to one end of the data processing module. The piezoelectric film sensor assembly includes a first piezoelectric film sensor and a second piezoelectric film sensor. The first piezoelectric film sensor and the second piezoelectric film sensor are arranged in sequence and spaced perpendicular to the road driving direction. The weighing collector also includes a thermometer electrically connected to one end of the data processing module. The thermometer is installed close to one side of the piezoelectric film sensor assembly. The dynamic weighing collector system also includes a GPRS module electrically connected to one end of the data processing module. The GPRS module is connected to the cloud platform via a wireless signal.

2. The vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission according to claim 1 is characterized in that: The weighing collector also includes a counting coil arranged in the middle of the road, and the counting coil is arranged on one side of the first piezoelectric film sensor or the second piezoelectric film sensor.

3. The vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission according to claim 2 is characterized in that: The weighing collector also includes a vehicle detector for processing the signal acquired by the counting coil, and the vehicle detector is electrically connected to one side of the data processing module.

4. The vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission according to claim 1 is characterized in that: The data processing module is provided with a shell outside, and the front of the shell is provided with a download interface, an RS232 interface, an SD card interface, an Internet port, a dip switch, a running indicator light, a power indicator light and several BNC interfaces.

5. The vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission according to claim 4 is characterized in that: The back side of the shell is provided with a power supply interface, a temperature sensor interface and a plurality of lane interfaces.

6. The vehicle dynamic weighing acquisition instrument system based on GPRS wireless transmission according to claim 2 is characterized in that: The counting coil is installed in the middle of both sides of the road, and the counting coil is installed near both sides of the first piezoelectric film sensor or the second piezoelectric film sensor.

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