CN112665696A - High-precision real-time vehicle weighing system - Google Patents
High-precision real-time vehicle weighing system Download PDFInfo
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- CN112665696A CN112665696A CN202011236767.6A CN202011236767A CN112665696A CN 112665696 A CN112665696 A CN 112665696A CN 202011236767 A CN202011236767 A CN 202011236767A CN 112665696 A CN112665696 A CN 112665696A
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Abstract
A high-precision real-time weighing system for vehicles comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors; the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively; in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle. By adopting the invention, the installation is convenient and fast when the sensor is installed, the cost is low, and the sensing precision can be improved by tens of times.
Description
Technical Field
The invention relates to a vehicle weighing technology, in particular to a high-precision real-time vehicle weighing system.
Background
With the rapid development of the logistics industry, the research on the real-time weighing system of the vehicle is concerned. On the one hand, the current on-vehicle real-time weighing system adopts resistance strain sensor usually, and its precision is relatively poor, is more and more difficult to satisfy the demand of on-vehicle real-time weighing, especially measures rigid structure's deformation, and the precision problem is obvious. On the other hand, for the traditional vehicle-mounted real-time weighing system, a sensor is arranged between a carriage and a frame, one end of the sensor is fixed on a newly added part of the frame, and the other end of the sensor is suspended and used for supporting the carriage. Therefore, when the equipment is added, the whole carriage needs to be lifted. This approach has certain drawbacks. Firstly, lifting the carriage can damage the automobile structure, so that the gravity center of the automobile main body is raised, and potential safety hazards are caused; meanwhile, as an additional connecting piece, the sensor also changes the fixing mode and the fixing point of the carriage and the frame, so that the connection strength is easy to weaken, and the safety factor is further influenced. Secondly, adopt above-mentioned traditional on-vehicle real-time weighing system, to raise the carriage, need relatively large-scale hoisting apparatus, it is more to the requirement in place and erection equipment, and the security of erection equipment itself also requires highly to cause the cost to be high.
In view of this, how to design a real-time weighing system for a vehicle, which has high precision and is convenient to install, is the subject of the present invention.
Disclosure of Invention
The invention provides a high-precision real-time vehicle weighing system, and aims to realize high precision and convenience in installation.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-precision real-time weighing system for a vehicle is used for weighing vehicle cargos, the vehicle is provided with at least two axles for bearing, and each axle is fixedly provided with two bearing seats for connecting a vehicle body main body; the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors; the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts which are distributed in the length direction of the metal plate; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively; in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle. A high-precision real-time vehicle weighing system is used for weighing vehicle cargos, an automobile control center and at least two axles for bearing are arranged on a vehicle, and two bearing seats for connecting a vehicle body main body are fixedly arranged on each axle; the innovation lies in that: the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module connected with the automobile control center; the strain sensing device comprises a plurality of strain sensors; the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts which are distributed in the length direction of the metal plate; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively; in an assembly state, the strain sensors are positioned on the axle and are arranged back to back in the circumferential direction of the positioned axle in one-to-one correspondence with the bearing seats; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle.
The relevant content in the above technical solution is explained as follows:
1. in this scheme, all have the laminating region that the laminating corresponds the axletree on a supporting part and two location portions for location and support.
2. In this solution, the "axle" is usually also called "axle" and is connected to the vehicle body through a suspension, and wheels are mounted on both ends of the axle. The axle is used for bearing the load of the automobile and maintaining the normal running of the automobile on the road.
2.3. In the scheme, the control center can remotely control the real-time weighing information of the vehicle.
3.4. In this aspect, preferably, the upper surface of the main body of the metal plate has a bonding region; the metal plate is attached and positioned with the corresponding axle glue through the attaching area. The fit region is matched with the curved surface of the corresponding axle.
4.5. In this aspect, it is preferable that the strain sensor is positioned at a bottom portion of the axle circumferential surface in an assembled state. The upper surface of the main body of the metal plate is provided with a bonding area; the metal plate is attached and positioned with the corresponding axle through the attaching area. The laminating location is the viscose connection location.
5.6. In this scheme, as further preferred, under the assembled state, two location portions of each metal sheet are respectively with corresponding axletree through the fastening of at least one ribbon staple bolt cup joint.
6.7. In the scheme, preferably, a through groove for the cable to pass through is formed on the lower surface of the supporting part of the metal plate; the lower surface of a positioning part of the metal plate is provided with a positioning groove for placing a circuit board, and the positioning groove is provided with a threading through hole for a cable to pass through. The structure is beneficial to the integration of components, and the space utilization rate is improved.
7.8. In this embodiment, preferably, the support portion and/or the positioning portion of the metal plate are provided with fixing through holes for pin fixing or screw fixing.
9. In this scheme, preferably, the signal transmission module includes a sensor junction box, and the sensor junction box is electrically connected to each strain sensor in the strain sensing device.
10. In this embodiment, as a further preferred option, the signal processing module includes a transmitter; the transmitter is a digital signal transmitter, the input end of the digital signal transmitter is electrically connected with the output end of the sensor junction box, and a digital signal output port for connecting a control center is arranged on the digital signal transmitter. The signal processing module comprises a transmitter, the input end of the transmitter is electrically connected with the output end of the sensor junction box, and the transmitter is provided with an information processing output port for being connected with an automobile control center; and the information processing output port is an RS485 port.
8.11. In this embodiment, as another preferred option, the signal processing module includes a transmitter; the transducer is an analog signal transducer, the input end of the analog signal transducer is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transducer.
9.12. In this scheme, as preferred, the metal sheet is integrated into one piece's aluminum alloy plate or corrosion resistant plate, is favorable to reducing material cost and processing cost.
The design principle and the beneficial effects of the invention are as follows:
the invention provides a high-precision real-time vehicle weighing system which can solve the problems of low precision and insufficient convenience in installation of the conventional real-time vehicle weighing system.
1. The real-time weighing system for the vehicle weighs by measuring the deformation of the axle of the vehicle, so that the strain sensor is positioned on the axle corresponding to the bearing seat. The installation is simple in operation, any structure of the vehicle body does not need to be changed, and the strength of the vehicle body is not lost, so that the real-time weighing system for the vehicle is suitable for installation during vehicle assembly and is also suitable for later-stage installation. When the device is additionally installed in the later stage, the operation is convenient and fast, and the operation cost is greatly reduced.
2. Aiming at the measurement of the deformation of the axle, the semiconductor strain sensor is adopted to replace the existing resistance strain sensor, so that the test precision can be obviously improved; further, an applicable elastomer structure is specially designed, and the precision is further improved. The system provided by the invention enables the test sensitivity to reach tens of times of that of the traditional vehicle real-time weighing system.
3. The fixed not only installation of strain sensor on the axletree is convenient, and is convenient for combine the viscose to connect, connect with the ribbon staple bolt and the fastener is connected, compares with prior art, and the reliability is high, and the security is high.
4. The vehicle weighing system provided by the invention adopts the signal processing module to process signals, then can transmit the signals to the control center of the vehicle control center capable of realizing remote control, carries out integrated processing, and can further display the signals through the original display integrated to the vehicle. Compared with the prior art, the weighing instrument does not need to be additionally and specially configured, the equipment cost can be effectively reduced, the space utilization rate can be improved, and the data can be conveniently further monitored or interacted.
Drawings
FIG. 1 is a schematic perspective view of a strain sensor mounted on an axle according to an embodiment of the present invention;
FIG. 2 is a bottom view of a strain sensor mounted on an axle in an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an elastomer metal plate of a strain sensor according to an embodiment of the present invention;
FIG. 4 is a bottom view of the elastomeric metal plate of the strain sensor in an embodiment of the present invention;
FIG. 5 is a block diagram of a real-time vehicle weighing system in an embodiment of the present invention;
FIG. 6 is a block diagram of a real-time vehicle weighing system in accordance with another embodiment of the present invention.
In the above drawings: 1. an axle; 2. a load bearing seat; 3. a metal plate; 4. a strain beam; 5. a support portion; 6. a positioning part; 7. a groove structure; 8. a through groove; 9. positioning a groove; 10. and a threading through hole.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): high-precision real-time vehicle weighing system
Referring to fig. 1 to 5, a high-precision real-time weighing system for a vehicle is used for weighing vehicle goods, wherein an automobile control center and two axles 1 for bearing are arranged on the vehicle, and two bearing seats 2 for connecting a vehicle body are fixedly arranged on each axle 1; the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module connected with the automobile control center; the strain sensing means comprises four strain sensors.
As shown in fig. 3 and 4, the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate 3 serving as an elastic body, and a cable for electric signal output; in the present embodiment, the metal plate 3 is an integrally formed aluminum alloy plate. The main body of the metal plate 3 comprises a supporting part 5 and two positioning parts 6 which are distributed in the length direction of the metal plate 3; each positioning part 6 is fixedly connected with the supporting part 5 through a sheet-shaped strain beam 4; each strain beam 4 forms a groove structure 7 on the upper surface and the lower surface of the metal plate 3.
In the assembled state, as shown in fig. 1 and 2, the strain sensors are positioned on the axle 1 and are arranged close to the load-bearing seats 2 in a one-to-one correspondence, and preferably are arranged facing away from each other in the circumferential direction of the positioned axle 1, i.e. the strain sensors are positioned at the bottom of the circumferential surface of the axle 1. (ii) a A supporting part 5 and two positioning parts 6 of the metal plate 3 main body are respectively arranged in contact with the corresponding axle 1; the groove direction of the groove structure 7 is perpendicular to the axial direction of the axle 1. In this embodiment, the two positioning portions 6 of each metal plate 3 are respectively fastened to the corresponding axle 1 by at least one tie hoop.
The upper surface of the main body of the metal plate 3 is provided with a bonding area; in the assembled state, the metal plate 3 is positioned by being attached to the corresponding axle 1 through the attaching region. In this embodiment, the attaching location is an adhesive bonding location.
In this embodiment, the supporting portion 5 and the positioning portion 6 of the metal plate 3 are provided with fixing through holes for pin fixing or screw fixing. In the present invention, fixing through holes may be further provided on the supporting portion 5 or the positioning portion 6 of the metal plate 3, which is easily understood and accepted by those skilled in the art.
In the present embodiment, as shown in fig. 3 and 4, a through slot 8 for a cable to pass through is opened on the lower surface of the supporting portion 5 of the metal plate 3; the lower surface of a positioning part 6 of the metal plate 3 is provided with a positioning groove 9 for placing a circuit board, and the positioning groove 9 is provided with a threading through hole 10 for a cable to pass through.
As shown in fig. 5, in the present embodiment, the signal transmission module includes a sensor junction box, and the sensor junction box is electrically connected to each strain sensor in the strain sensing device. In this embodiment, the signal processing module includes a transmitter, the transmitter is a digital signal transmitter, an input end of the digital signal transmitter is electrically connected to an output end of the sensor junction box, and the digital signal transmitter is provided with a digital signal output port for connecting to a control center. In this embodiment, the input end of the transmitter is electrically connected with the output end of the sensor junction box, and the transmitter is provided with an information processing output port for connecting with an automobile control center; and the information processing output port is an RS485 port.
In the present embodiment, the method of mounting the strain sensor on the axle 1: firstly, the positioning part 6 and the supporting part 5 of the strain sensor are connected with the axle 1 in an adhesive way, then two tie hoops are respectively and tightly sleeved on the peripheries of the two positioning parts 6 and the corresponding axle 1, and finally, the two tie hoops can be further fastened by pins or other fasteners through fixing through holes.
Other embodiments and structural variations of the present invention are described below:
1. in the present embodiment, the metal plate is an integrally formed aluminum alloy plate, which is low in cost, but the present invention is not limited thereto, and the metal plate is other metal plates such as a stainless steel plate, which is easily understood and accepted by those skilled in the art.
2. In the present embodiment, the attachment region is a flat surface, but the present invention is not limited thereto, and the attachment region may be a curved surface that matches the curved surface of the corresponding axle 1. As will be readily understood and accepted by those skilled in the art.
3. In the above embodiment, in the assembled state, a tie hoop is sleeved on each positioning portion of the strain sensor and the periphery of the axle corresponding to the positioning portion. The invention is not so limited. The strain sensor can further comprise a cable tie or a plurality of cable ties, and in an assembly state, each positioning part of the strain sensor and at least one cable tie arranged on the periphery of the corresponding axle are sleeved with the positioning part of the strain sensor and the periphery of the corresponding axle can also be sleeved with a plurality of anchor ears. As would be readily understood and accepted by those skilled in the art.
4. In the above embodiment, two axles are provided on the vehicle, and correspondingly, the real-time weighing system of the vehicle includes four strain sensors, but the invention is not limited thereto. Corresponding to vehicles with different numbers of bearing seats, strain sensors with corresponding numbers can be arranged in the bearing system so as to ensure the measuring accuracy. As would be readily understood and accepted by those skilled in the art.
4.5. In the above embodiment, the transmitter is a digital signal transmitter, an input end of the digital signal transmitter is electrically connected to an output end of the sensor junction box, and the digital signal transmitter is provided with a digital signal output port for connecting to a control center. But the present invention is not limited thereto. The transmitter can also be an analog signal transmitter, the input end of the analog signal transmitter is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transmitter, as shown in figure 6. As would be readily understood and accepted by those skilled in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A high-precision real-time weighing system for a vehicle is used for weighing vehicle cargos, the vehicle is provided with at least two axles for bearing, and each axle is fixedly provided with two bearing seats for connecting a vehicle body main body; the method is characterized in that: the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors;
the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts which are distributed in the length direction of the metal plate; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively;
in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle.
2. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: in the assembled state, the strain sensor is positioned at the bottom of the axle circumferential surface.
3. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: the upper surface of the main body of the metal plate is provided with a bonding area; the metal plate is attached and positioned with the corresponding axle glue through the attaching area.
4. A high accuracy real-time vehicle weighing system as recited in claim 3, wherein: the fit region is matched with the curved surface of the corresponding axle.
5. A high accuracy real-time vehicle weighing system as recited in claim 3, wherein: in an assembly state, the two positioning parts of each metal plate are respectively sleeved and fastened with the corresponding axle through at least one hoop.
6. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: a through groove for a cable to pass through is formed in the lower surface of the supporting part of the metal plate; the lower surface of a positioning part of the metal plate is provided with a positioning groove for placing a circuit board, and the positioning groove is provided with a threading through hole for a cable to pass through.
7. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: the signal transmission module comprises a sensor junction box, and the sensor junction box is electrically connected with each strain sensor in the strain sensing device.
8. A high accuracy real-time vehicle weighing system as recited in claim 7, wherein: the signal processing module comprises a transmitter; the transmitter is a digital signal transmitter, the input end of the digital signal transmitter is electrically connected with the output end of the sensor junction box, and a digital signal output port for connecting a control center is arranged on the digital signal transmitter.
9. A high accuracy real-time vehicle weighing system as recited in claim 7, wherein: the signal processing module comprises a transmitter; the transducer is an analog signal transducer, the input end of the analog signal transducer is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transducer.
10. A high accuracy real-time vehicle weighing system as claimed in any one of claims 1 to 9, wherein: the metal plate is an integrally formed aluminum alloy plate or a stainless steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236767.6A CN112665696A (en) | 2020-11-09 | 2020-11-09 | High-precision real-time vehicle weighing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236767.6A CN112665696A (en) | 2020-11-09 | 2020-11-09 | High-precision real-time vehicle weighing system |
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| Publication Number | Publication Date |
|---|---|
| CN112665696A true CN112665696A (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011236767.6A Pending CN112665696A (en) | 2020-11-09 | 2020-11-09 | High-precision real-time vehicle weighing system |
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|---|---|
| CN (1) | CN112665696A (en) |
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2020
- 2020-11-09 CN CN202011236767.6A patent/CN112665696A/en active Pending
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