CN112880785A - Semi-trailer vehicle-mounted weighing system based on laser displacement sensor - Google Patents
Semi-trailer vehicle-mounted weighing system based on laser displacement sensor Download PDFInfo
- Publication number
- CN112880785A CN112880785A CN202110294188.5A CN202110294188A CN112880785A CN 112880785 A CN112880785 A CN 112880785A CN 202110294188 A CN202110294188 A CN 202110294188A CN 112880785 A CN112880785 A CN 112880785A
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- vehicle
- bottom plate
- module
- wireless transmission
- remote control
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- 238000005303 weighing Methods 0.000 title claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention provides a semi-trailer vehicle-mounted weighing system which comprises a vehicle-mounted weighing end and a remote control end. The vehicle-mounted weighing end comprises a laser displacement sensor, a controller, a wireless transmission module, a positioning module, a display screen, a loudspeaker and an alarm indicator lamp. The remote control end comprises an upper computer, a wireless transmission module, a display screen, a keyboard and a microphone. The vehicle-mounted weighing end is used for collecting, transmitting, processing, calculating and displaying data. The obtained load capacity is transmitted to a remote control end, so that the vehicle can be monitored in real time, and when the vehicle is overloaded, related workers can send voice messages by using a microphone or send text messages by using a keyboard to remind a driver, so that the overload is avoided from the source. The invention has the advantages that the load capacity of the vehicle can be detected in real time, the adopted laser displacement sensor has high precision and small error, and the accurate measurement of the weight value is ensured.
Description
Technical Field
The invention relates to the field of weight measurement of semitrailers, in particular to a vehicle-mounted weighing system.
Technical Field
Because the semi-trailer has a long body, a large volume and a heavy load capacity, and a common small wagon balance is difficult to weigh, the semi-trailer can be weighed only in a place with a large wagon balance after being filled with goods, and thus the semi-trailer cannot weigh the load capacity of the semi-trailer at any time and any place due to the limitation of the wagon balance position.
Semitrailer owners usually overload to earn more profits, which not only causes serious damage to the road surface, but also threatens the safety of the semitrailer owners, so that the effective control of the load of the semitrailer plays a crucial role.
Disclosure of Invention
In order to solve the problems of the prior art background, the vehicle-mounted weighing system is designed, the load of a vehicle can be detected in real time without a wagon balance on the vehicle, the load information is displayed on a display screen, measured data can be uploaded to a background, whether the vehicle is overloaded or not can be monitored in real time, after the vehicle is overloaded, relevant background workers can send voice commands through a microphone and send text messages through a keyboard, meanwhile, an alarm indicator lamp connected with a controller flickers, a loudspeaker makes a sound, overload information is displayed on the display screen, the overload problem of the vehicle is solved from the source, and accordingly the driving safety of a driver is guaranteed.
In order to solve the above problems, the technical solution adopted by the present invention is as follows:
a semi-trailer vehicle-mounted weighing system is characterized by comprising a vehicle-mounted weighing end and a remote control end; the vehicle-mounted weighing end is in wireless connection with the remote control end.
Further, according to claim 1, the vehicle-mounted weighing terminal comprises a measuring module, a CAN bus, a controller, a power supply module, a wireless transmission module, a positioning module, a display screen, a loudspeaker and an alarm indicator lamp. .
Further, the measuring module according to claim 2 comprises a laser displacement sensor for measuring the deformation of the leaf spring; the controller is communicated with the measuring module through a CAN communication protocol, reads data measured by the laser displacement sensor in the measuring module, and calculates to obtain the bearing weight of the semitrailer; the display screen is used for displaying the numerical value of the load capacity and the instruction information sent by the remote control end; the positioning module is used for acquiring the position of the vehicle in real time; the horn and the alarm indicator lamp are used for reminding a driver when the vehicle is overloaded; the wireless transmission module is used for receiving and transmitting all information; and the power supply module, the wireless transmission module, the positioning module, the display screen, the loudspeaker and the alarm indicating lamp are all connected with the controller.
Furthermore, the deformation of the leaf spring can be measured in two ways, one is to measure the leaf spring supported by a single shaft, and the deformation of the leaf spring can be obtained by measuring the distance between the center point of the uppermost leaf spring and the frame when the frame bears the load; the other method is to measure the steel plate spring supported by double shafts, and the deformation of the steel plate spring is obtained by measuring the distance between the brackets at the two ends of the uppermost plate spring and the frame when the frame bears the load.
Furthermore, a protection device is arranged outside the laser displacement sensor, the protection device consists of an upper bottom plate, a lower bottom plate and a connecting device, the laser displacement sensor is arranged at the central position of the upper bottom plate, and for the steel plate spring supported by a single shaft, the lower bottom plate is arranged on the central point of the uppermost plate spring of each steel plate spring; for the double-shaft supported leaf springs, the lower bottom plate is arranged on the brackets at two ends of the leaf springs at two sides; the upper bottom plate is arranged on the frame right above the lower bottom plate, and the centers of the upper bottom plate and the lower bottom plate are on the same straight line; the connecting device is used for connecting the upper bottom plate and the lower bottom plate.
Further, the power module plays a role in voltage reduction and provides stable voltage for the system.
Further, the remote control end includes host computer, wireless transmission module, display screen, keyboard and microphone.
Further, the upper computer is used for sending a control command; the wireless transmission module is used for receiving and sending information; the display screen is used for displaying the position information and the load information of the vehicle; the keyboard is used for sending a text instruction; the microphone is used for sending voice messages; the remote control end is connected with the wireless transmission module.
Further, the wireless transmission module of the vehicle-mounted weighing terminal is connected with the wireless transmission module of the remote control terminal of claim 7 through a GPRS network.
The vehicle-mounted weighing system needs to be calibrated before being used. The calibration process is preferably performed on a horizontal road surface, so that the calibration accuracy can be ensured. The laser displacement sensor is used for measuring the deformation of the steel plate springs, the rigidity of each steel plate spring can be calculated through calibration, then the rigidity of each steel plate spring is input into a controller at a vehicle-mounted weighing end, calibration is completed, and the system can work normally. The specific calibration process is as follows:
the number of the whole vehicle leaf springs is 10, the number of the leaf springs supported by a single shaft is 8, the stiffness of each leaf spring is Ki (i is 1,2, … … and 8), the number of the leaf springs supported by double shafts is 2, half of the stiffness of each leaf spring is Ki (i is 9,10,11 and 12), and data collected by 12 laser displacement sensors is Xj,i(i, j ═ 1,2, … …,12), after the system is powered on, each time the system is loaded with 100N force, and after 12 times of loading, a non-homogeneous linear equation can be obtained:
the stiffness of each leaf spring can be obtained by solving the above equation.
Drawings
FIG. 1 is a schematic structural component view of a semi-trailer vehicle-mounted weighing system of the invention;
FIG. 2 is a schematic view of a protection device for a laser displacement sensor of a semi-trailer vehicle-mounted weighing system of the invention;
FIG. 3 is a schematic view of the mounting position of a single-shaft support laser displacement sensor of the semi-trailer vehicle-mounted weighing system of the invention;
FIG. 4 is a schematic view of the mounting position of a double-shaft support laser displacement sensor of the semi-trailer vehicle-mounted weighing system.
Detailed Description
As shown in figure 1, the semi-trailer vehicle-mounted weighing system consists of a vehicle-mounted weighing end and a remote control end. The vehicle-mounted weighing end comprises a measuring module, a CAN bus, a controller, a power supply module, a wireless transmission module, a positioning module, a display screen, a loudspeaker and an alarm indicator lamp. The measuring module comprises a laser displacement sensor, and the laser displacement sensor is used for measuring the deformation of the steel plate spring; the controller is communicated with the measuring module through a CAN communication protocol, reads data measured by the laser displacement sensor in the measuring module, and calculates to obtain the bearing weight of the semitrailer; the display screen is used for displaying the numerical value of the load capacity and the instruction information sent by the remote control end; the positioning module is used for acquiring the position of the vehicle in real time; the horn and the alarm indicator lamp are used for reminding a driver when the vehicle is overloaded; the wireless transmission module is used for receiving and transmitting all information; and the power supply module, the wireless transmission module, the positioning module, the display screen, the loudspeaker and the alarm indicating lamp are all connected with the controller. The remote control end comprises an upper computer, a wireless transmission module, a display screen, a keyboard and a microphone;
the method for measuring the deformation of the steel plate spring is divided into two modes, one mode is to measure the steel plate spring supported by a single shaft, and the deformation of the steel plate spring is obtained by measuring the distance from the central point of the uppermost plate spring to the frame when the frame bears the load; the other method is to measure the steel plate spring supported by double shafts, and the deformation of the steel plate spring is obtained by measuring the distance between the brackets at the two ends of the uppermost plate spring and the frame when the frame bears the load.
As shown in fig. 2, the laser displacement sensor is externally provided with a protection device, the protection device is composed of an upper bottom plate, a lower bottom plate and a connecting device, the laser displacement sensor is arranged at the central position of the upper bottom plate, as shown in fig. 3, for a steel plate spring supported by a single shaft, the lower bottom plate is arranged at the central point of the uppermost plate spring of each steel plate spring; as shown in fig. 4, for the double-shaft supported leaf spring, the lower base plate is mounted on the brackets at the two ends of the leaf spring at the two sides; the upper bottom plate is arranged on the frame right above the lower bottom plate, and the centers of the upper bottom plate and the lower bottom plate are on the same straight line; the connecting device is made of compressible materials and used for connecting the upper bottom plate and the lower bottom plate, and when the steel plate spring deforms, the connecting device can compress or stretch along with the upper bottom plate and the lower bottom plate.
The power supply module plays a role in voltage reduction and provides stable voltage for the system.
The upper computer is used for sending a control command; the wireless transmission module is used for receiving and sending information; the display screen is used for displaying the position information and the load information of the vehicle; the keyboard is used for sending a text instruction; the microphone is used for sending voice messages; the remote control end is connected with the wireless transmission module.
The wireless transmission module of the vehicle-mounted weighing terminal is connected with the wireless transmission module of the remote control terminal in claim 7 through a GPRS network.
In the embodiment, the controller communicates with the measurement module through a CAN communication protocol, reads data measured by a laser displacement sensor in the measurement module, and calculates to obtain the bearing weight of the semitrailer; the remote control system is characterized in that the remote control system comprises a display screen, a loudspeaker connected with a controller emits sound if the vehicle is overloaded, an alarm indicator lamp flickers, the numerical value of the load capacity is emitted through a wireless transmission module of a vehicle-mounted weighing end, the wireless transmission module of the remote control end receives the sound and displays the received data on the display screen of the remote control end, the overload character is displayed on the display screen, relevant workers can send voice messages by using a microphone or send character messages through a keyboard to remind drivers, and therefore overload is avoided from the source, and the relevant workers can obtain relevant information of the vehicle in real time.
Claims (9)
1. A semi-trailer vehicle-mounted weighing system is characterized by comprising a vehicle-mounted weighing end and a remote control end; the vehicle-mounted weighing end is in wireless connection with the remote control end.
2. The vehicle-mounted weighing terminal according to claim 1, comprising a measuring module, a CAN bus, a controller, a power supply module, a wireless transmission module, a positioning module, a display screen, a loudspeaker and an alarm indicator lamp.
3. The measuring module of claim 2 comprising a laser displacement sensor for measuring the amount of deflection of the leaf spring; the controller is communicated with the measuring module through a CAN communication protocol, reads data measured by the laser displacement sensor in the measuring module, and calculates to obtain the bearing weight of the semitrailer; the display screen is used for displaying the numerical value of the load capacity and the instruction information sent by the remote control end; the positioning module is used for acquiring the position of the vehicle in real time; the horn and the alarm indicator lamp are used for reminding a driver when the vehicle is overloaded; the wireless transmission module is used for receiving and transmitting all information; and the power supply module, the wireless transmission module, the positioning module, the display screen, the loudspeaker and the alarm indicating lamp are all connected with the controller.
4. The method for measuring the deformation of the leaf spring according to claim 3 is divided into two ways, one is to measure the leaf spring supported by a single shaft, and the deformation of the leaf spring is obtained by measuring the distance between the center point of the uppermost leaf spring and the vehicle frame when the vehicle frame is loaded; the other method is to measure the steel plate spring supported by double shafts, and the deformation of the steel plate spring is obtained by measuring the distance between the brackets at the two ends of the uppermost plate spring and the frame when the frame bears the load.
5. The laser displacement sensor according to claim 2, wherein the protective device is composed of an upper bottom plate, a lower bottom plate and a connecting device, the laser displacement sensor is arranged at the central position of the upper bottom plate, and for the steel plate spring supported by a single shaft, the lower bottom plate is arranged at the central point of the uppermost plate spring of each steel plate spring; for the double-shaft supported leaf springs, the lower bottom plate is arranged on the brackets at two ends of the leaf springs at two sides; the upper bottom plate is arranged on the frame right above the lower bottom plate, and the centers of the upper bottom plate and the lower bottom plate are on the same straight line; the connecting device is used for connecting the upper bottom plate and the lower bottom plate.
6. The power module of claim 1 functions as a buck to provide a stable voltage to the system.
7. The remote control terminal of claim 1, comprising an upper computer, a wireless transmission module, a display screen, a keyboard and a microphone.
8. The upper computer of claim 7 is used for sending a control command; the wireless transmission module is used for receiving and sending information; the display screen is used for displaying the position information and the load information of the vehicle; the keyboard is used for sending a text instruction; the microphone is used for sending voice messages; the remote control end is connected with the wireless transmission module.
9. The wireless transmission module of the vehicle-mounted weighing terminal according to claim 2 is connected with the wireless transmission module of the remote control terminal according to claim 7 through a GPRS network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294188.5A CN112880785A (en) | 2021-03-19 | 2021-03-19 | Semi-trailer vehicle-mounted weighing system based on laser displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294188.5A CN112880785A (en) | 2021-03-19 | 2021-03-19 | Semi-trailer vehicle-mounted weighing system based on laser displacement sensor |
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| CN112880785A true CN112880785A (en) | 2021-06-01 |
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| CN202110294188.5A Pending CN112880785A (en) | 2021-03-19 | 2021-03-19 | Semi-trailer vehicle-mounted weighing system based on laser displacement sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563071A (en) * | 2022-02-28 | 2022-05-31 | 郑州业伟实业有限公司 | Automatic monitoring device for truck load weighing |
| CN115096419A (en) * | 2022-05-13 | 2022-09-23 | 武汉工程大学 | Vehicle load measuring device and method and vehicle |
| CN116561486A (en) * | 2023-07-05 | 2023-08-08 | 深圳市汉德网络科技有限公司 | Millimeter wave radar-based vehicle load control method and ranging mechanism |
-
2021
- 2021-03-19 CN CN202110294188.5A patent/CN112880785A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114563071A (en) * | 2022-02-28 | 2022-05-31 | 郑州业伟实业有限公司 | Automatic monitoring device for truck load weighing |
| CN115096419A (en) * | 2022-05-13 | 2022-09-23 | 武汉工程大学 | Vehicle load measuring device and method and vehicle |
| CN116561486A (en) * | 2023-07-05 | 2023-08-08 | 深圳市汉德网络科技有限公司 | Millimeter wave radar-based vehicle load control method and ranging mechanism |
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