Vehicle weighing system, air suspension system, and vehicle

Abstract

The utility model discloses a vehicle weighing system, air suspension system and vehicle, and this system includes: pressure sensing component is connected with the air suspension system of vehicle, is used for detecting the gas pressure of the airbag of air suspension system to the voltage signal of corresponding gas pressure conversion, control module is connected with pressure sensing component, is used for receiving voltage signal to determine the current load of vehicle according to voltage signal, wherein, control module has pre -stored voltage signal and the corresponding relationship of current load between pre -labeling. The utility model can efficiently, accurately monitor the actual load condition of vehicle, make the determination process of load more simple, simple structure, easy to realize, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a vehicle weighing system, an air suspension system, and a vehicle. Background Technology

[0002] In the logistics and transportation industry, preventing truck overloading is a crucial aspect of ensuring road traffic safety and extending vehicle lifespan. However, because trucks typically have multiple axles, the load distribution between these axles is complex and dynamically changing due to factors such as cargo weight, loading position, and suspension system, making it difficult to accurately estimate the actual load capacity of the entire vehicle.

[0003] In related technologies, commonly used weighing methods often rely on weighbridges or high-cost multi-sensor systems, which are not only inconvenient to operate, but also have high installation and maintenance costs, making it difficult to achieve real-time and accurate monitoring of the load of multi-axle vehicles. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one objective of this utility model is to provide a vehicle weighing system that can efficiently and accurately monitor the actual load of a vehicle, making the load measurement process simpler, while also having a simple structure, being easy to implement, and reducing costs.

[0006] Therefore, the second objective of this utility model is to provide an air suspension system.

[0007] Therefore, the second objective of this utility model is to provide a vehicle.

[0008] To achieve the above objectives, an embodiment of the first aspect of this utility model discloses a vehicle weighing system, comprising: a pressure sensing component connected to the vehicle's air suspension system for detecting the gas pressure of the airbags in the air suspension system and converting the gas pressure into a corresponding voltage signal; and a control module connected to the pressure sensing component for receiving the voltage signal and determining the current load of the vehicle based on the voltage signal, wherein the control module pre-stores a pre-calibrated correspondence between the voltage signal and the current load.

[0009] According to the vehicle weighing system of this utility model embodiment, the pressure sensing component is connected to the air suspension system. When the pressure inside the airbag in the air suspension system changes, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. The voltage signal is then transmitted to the control module. The control module determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This enables efficient and accurate monitoring of the actual load of the vehicle, making the load measurement process simpler. At the same time, the structure is simple and easy to implement, reducing costs.

[0010] In addition, the vehicle weighing system according to the above embodiments of this utility model may also have the following additional technical features:

[0011] In some embodiments, the pressure sensing component includes: a sensing unit for converting the changed gas pressure into a corresponding resistance value when the gas pressure of the airbag changes; and a conversion unit connected to the sensing unit for converting the resistance value into a voltage signal output.

[0012] In some embodiments, the sensing unit includes: a sensing diaphragm for generating a corresponding mechanical deformation when the gas pressure of the airbag changes; and a piezoresistive element disposed on the sensing diaphragm for converting the mechanical deformation into a corresponding resistance value.

[0013] In some embodiments, the vehicle weighing system further includes a calibration module, which is connected to the pressure sensing component and the control module respectively, for receiving the voltage signal and calibrating the voltage signal to output a calibrated voltage signal.

[0014] In some embodiments, the calibration module includes a temperature detection unit for detecting the operating ambient temperature of the pressure sensing component.

[0015] In some embodiments, the correction module further includes a signal correction unit, configured to correct the voltage signal according to the operating environment temperature to output the corrected voltage signal, wherein the signal correction unit stores a pre-calibrated correspondence between the operating environment temperature and the voltage signal.

[0016] In some embodiments, the vehicle weighing system further includes a protective housing, wherein the pressure sensing component is mounted within a cavity of the protective housing.

[0017] In some embodiments, the vehicle weighing system further includes a display module connected to the control module, configured to receive a load signal sent by the control module to indicate the current load, and to display the current load based on the load signal.

[0018] To achieve the above objectives, an embodiment of the second aspect of this utility model discloses an air suspension system, including: an airbag, and a vehicle weighing system as described in any embodiment of the first aspect of this utility model.

[0019] According to the air suspension system of this utility model embodiment, the pressure sensing component is connected to the air suspension system. When the pressure inside the airbag changes in the air suspension system, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. Then, the voltage signal is transmitted to the control module. The control module determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This can efficiently and accurately monitor the actual load of the vehicle, making the load measurement process simpler. At the same time, the structure is simple and easy to implement, reducing costs.

[0020] To achieve the above objectives, a third aspect of the present invention discloses a vehicle including an air suspension system as described in the second aspect of the present invention.

[0021] According to the vehicle of this utility model embodiment, the pressure sensing component is connected to the air suspension system. When the pressure inside the airbag in the air suspension system changes, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. The voltage signal is then transmitted to the control module. The control module determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This enables efficient and accurate monitoring of the actual load of the vehicle, simplifies the load measurement process, and is simple in structure, easy to implement, and reduces costs.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of a vehicle weighing system according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a pressure sensing component according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram showing the connection between a pressure sensing component and an air suspension system according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram showing the correspondence between the change in resistance value and the change in gas pressure according to an embodiment of the present invention;

[0028] Figure 5 This is a structural block diagram of an air suspension system according to an embodiment of the present invention;

[0029] Figure 6 This is a structural block diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0031] The following is for reference. Figure 1 A vehicle weighing system according to an embodiment of the present invention is described.

[0032] Figure 1 This is a structural schematic diagram of a vehicle weighing system according to an embodiment of the present invention. Figure 1 As shown, the vehicle weighing system 100 includes a pressure sensing component 110 and a control module 120.

[0033] Specifically, the pressure sensing component 110 is connected to the vehicle's air suspension system to detect the gas pressure of the airbags in the air suspension system and convert the gas pressure into a corresponding voltage signal; the control module 120 is connected to the pressure sensing component 110 to receive the voltage signal and determine the current load of the vehicle based on the voltage signal. The control module 120 has a pre-defined correspondence between the voltage signal and the current load.

[0034] Among them, such as Figure 2 As shown, the pressure sensing component 110 is, for example, a pressure transformer sensor.

[0035] In this embodiment, the pressure sensing component 110 is connected to the vehicle's air suspension system. Its main function is to detect the gas pressure inside the airbags in the air suspension system in real time and convert the gas pressure parameter into a corresponding voltage signal output. Since the airbags in the air suspension system will experience pressure changes due to compression when bearing the vehicle's load, these changes can accurately reflect the vehicle's current load status.

[0036] like Figure 3As shown, for example, the air suspension system is connected to the pressure chamber of the pressure sensing component 110 via a pipe. When the current load of the vehicle changes, the airbag is compressed or stretched, causing changes in the gas pressure inside the airbag. These pressure changes are transmitted to the pressure sensing component 110 via a pipe, which converts the detected gas pressure into a voltage signal.

[0037] The control module 120 is electrically connected to the pressure sensing component 110. The pressure sensing component 110 transmits a voltage signal to the control module 120. After receiving the voltage signal, the control module 120 determines the current load of the vehicle based on the correspondence between the voltage signal and the current load that is pre-calibrated and stored in its internal system.

[0038] For example Figure 4 The correspondence shown indicates that when the voltage signal corresponds to a voltage of 4.5V, the load corresponding to that voltage can be determined to be 16.85T.

[0039] The correspondence between the voltage signal and the current load can be established through experimental data, ensuring a high degree of matching accuracy and repeatability between the voltage signal and the load.

[0040] This allows for efficient and accurate monitoring of the vehicle's actual load, making the load measurement process simpler. Furthermore, its simple structure and ease of implementation reduce costs.

[0041] Therefore, the aforementioned vehicle weighing system 100, with its pressure sensing component 110 connected to the air suspension system, can detect changes in the pressure within the airbags of the air suspension system, convert the gas pressure into a corresponding voltage signal, and then transmit the voltage signal to the control module 120. The control module 120 determines the vehicle's current load based on the received voltage signal and the pre-stored correspondence between the voltage signal and the current load. This enables efficient and accurate monitoring of the vehicle's actual load, simplifies the load measurement process, and is simple in structure, easy to implement, and reduces costs.

[0042] In one embodiment of the present invention, the pressure sensing component 110 includes a sensing unit and a conversion unit, wherein the sensing unit is used to convert the changed gas pressure into a corresponding resistance value when the gas pressure of the airbag changes; the conversion unit is connected to the sensing unit and is used to convert the resistance value into a voltage signal output.

[0043] In this embodiment, the sensing unit and the conversion unit are capable of converting gas pressure into a voltage signal. Specifically, after the sensing unit detects a change in the gas pressure inside the airbag in the air suspension system, it converts this physical pressure change into a corresponding change in resistance value. The conversion unit is electrically connected to the sensing unit. The sensing unit transmits the resistance value to the conversion unit, which receives the resistance value and further converts it into a voltage signal output through circuit processing.

[0044] The conversion unit includes, but is not limited to, a pressure transmitter. After receiving the resistance value, the pressure transmitter can convert the detected resistance value into a voltage signal output, which is convenient for the control module 120 to identify and process, thereby accurately determining the current load of the vehicle.

[0045] In one embodiment of the present invention, the sensing unit includes a sensing diaphragm and a piezoresistive element, wherein the sensing diaphragm is used to generate corresponding mechanical deformation when the gas pressure of the airbag changes; the piezoresistive element is disposed on the sensing diaphragm and is used to convert the mechanical deformation into a corresponding resistance value.

[0046] Piezoresistive elements include, for example, piezoresistive transformers.

[0047] In this embodiment, when the gas pressure in the airbag changes, the sensing diaphragm undergoes a corresponding mechanical deformation; a piezoresistive element is disposed on or on the surface of the sensing diaphragm, and the resistance value changes with the mechanical deformation of the diaphragm, thereby realizing the sensing and conversion of gas pressure.

[0048] like Figure 4 As shown, as the gas pressure inside the airbag increases, the sensing diaphragm undergoes mechanical deformation, which increases the resistance of the piezoresistive element. Consequently, the voltage signal converted from the resistance value also increases, thus achieving a positive mapping from pressure change to voltage signal. This facilitates accurate monitoring and analysis of the vehicle's load status in the future.

[0049] In one embodiment of this utility model, such as Figure 1 As shown, the vehicle weighing system 100 also includes a calibration module 130, which is connected to the pressure sensing component 110 and the control module 120 respectively, for receiving voltage signals and calibrating the voltage signals to output calibrated voltage signals.

[0050] In an embodiment, such as Figure 1As shown, the calibration module 130 is connected to both the pressure sensing component 110 and the control module 120. It receives the voltage signal output from the pressure sensing component 110 and performs calibration processing on this signal to eliminate any potential errors or deviations, ensuring that the output voltage signal accurately reflects the true state of the gas pressure inside the airbag. The calibrated voltage signal is then transmitted to the control module 120, enabling the control module 120 to analyze and process the signal based on greater precision, thereby achieving more accurate monitoring of the vehicle's load condition.

[0051] In one embodiment of the present invention, the calibration module 130 includes a temperature detection unit for detecting the operating ambient temperature of the pressure sensing component 110.

[0052] In this embodiment, the temperature detection unit includes, for example, a temperature sensor. Since temperature changes may affect the electrical characteristics of internal components (such as piezoresistive elements) of the pressure sensing component 110, leading to measurement errors, the temperature detection unit acquires the operating ambient temperature of the pressure sensing component 110. This operating ambient temperature is then combined with the voltage signal output by the pressure sensing component 110, and the correction module 130 performs comprehensive analysis and compensation processing. This eliminates or reduces the impact of temperature drift, improves the accuracy of vehicle load measurement results, and enhances the reliability and adaptability of the vehicle weighing system 100 operating in different temperature environments.

[0053] In one embodiment of the present invention, the correction module 130 further includes a signal correction unit, used to correct the voltage signal according to the working environment temperature, so as to output the corrected voltage signal, wherein the signal correction unit has a pre-defined correspondence between the working environment temperature and the voltage signal.

[0054] In this embodiment, the signal correction unit receives the ambient temperature from the temperature detection unit and compensates the current voltage signal based on the pre-calibrated and stored correspondence between the ambient temperature and the voltage signal, such as a temperature compensation curve or a compensation parameter table. Since temperature changes can cause output drift in the pressure sensing component 110, leading to deviations from the true value, this correction method based on pre-stored calibration data effectively eliminates errors caused by temperature factors, resulting in a more accurate and stable corrected voltage signal. This not only improves the measurement accuracy of the vehicle weighing system but also enhances its adaptability and reliability under complex environmental conditions.

[0055] In one embodiment of the present invention, the vehicle weighing system 100 further includes a protective housing, and a pressure sensing component 110 is installed inside the cavity of the protective housing.

[0056] In this embodiment, a chamber is provided inside the protective housing, within which the pressure sensing component 110 is fixedly installed. This protective housing isolates the pressure sensing component 110 from the external environment, effectively preventing interference from external factors such as dust, moisture, and vibration, thus improving the system's stability and durability. Simultaneously, the chamber structure provides a good sealing and support environment for the pressure sensing component 110, ensuring it maintains sensitivity and measurement accuracy even under complex operating conditions. This structure not only enhances the system's environmental adaptability but also extends the service life of the pressure sensing component 110, contributing to the long-term reliable operation of the vehicle weighing system 100.

[0057] In one embodiment of this utility model, such as Figure 1 As shown, the vehicle weighing system 100 also includes a display module 140, which is connected to the control module 120 and is used to receive a load signal sent by the control module 120 to indicate the current load, and to display the current load based on the load signal.

[0058] In this embodiment, the display module 140 is connected to the control module 120. After the control module 120 determines the current load of the vehicle, it sends a load signal to the display module 140 to indicate the current load. Upon receiving the load signal, the display module 140 can intuitively display the current load status of the vehicle, for example, displaying the current load as 16.85T on the dashboard. This design allows users to obtain vehicle load data in real time and conveniently, improving information readability and ease of operation. This not only enhances the user experience but also improves the efficiency and safety of vehicle load measurement.

[0059] Furthermore, when the vehicle's current load exceeds a preset load threshold, i.e., when the voltage corresponding to the voltage signal reaches the maximum voltage value Umax, the display module 140 will issue an alarm prompt, such as an audible and visual alarm or a screen flashing prompt, to remind the driver or relevant personnel to take timely measures. The introduction of this alarm function further enhances the system's safety and practicality, helps prevent safety hazards and equipment damage caused by overloading, ensures the vehicle operates within a safe load range, and improves the overall safety and compliance of transportation operations. For example, Umax = 4.7V ± 100mV.

[0060] In summary, according to the vehicle weighing system 100 of this utility model embodiment, the pressure sensing component 110 is connected to the air suspension system. When the pressure inside the airbag in the air suspension system changes, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. Then, the voltage signal is transmitted to the control module 120. The control module 120 determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This can efficiently and accurately monitor the actual load of the vehicle, making the load measurement process simpler. At the same time, the structure is simple and easy to implement, reducing costs.

[0061] The present invention also proposes an air suspension system in the embodiments.

[0062] like Figure 5 The diagram shown is a structural block diagram of an air suspension system according to an embodiment of the present invention. The air suspension system 200 includes an airbag and a vehicle weighing system 100 as described in any of the above embodiments of the present invention.

[0063] It should be noted that the specific implementation of the air suspension system 200 in weighing a vehicle is similar to that of the vehicle weighing system 100 in any of the above embodiments of the present invention. Therefore, for a detailed exemplary description of the air suspension system 200 in the process of weighing a vehicle, please refer to the relevant description of the vehicle weighing system 100 mentioned above. To reduce redundancy, it will not be repeated here.

[0064] According to the air suspension system 200 of this utility model embodiment, the pressure sensing component 110 is connected to the air suspension system. When the pressure inside the airbag changes in the air suspension system, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. Then, the voltage signal is transmitted to the control module 120. The control module 120 determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This can efficiently and accurately monitor the actual load of the vehicle, making the load measurement process simpler. At the same time, the structure is simple and easy to implement, reducing costs.

[0065] The present invention also proposes a vehicle 200 in the embodiments.

[0066] like Figure 6 The diagram shown is a structural block diagram of a vehicle according to an embodiment of the present invention. The vehicle 300 includes an air suspension system 200 as described in the second aspect embodiment of the present invention.

[0067] It should be noted that the specific implementation method of the vehicle 300 when weighing the vehicle is similar to the specific implementation method of the air suspension system 200 in any of the above embodiments of the present utility model. Therefore, for a detailed exemplary description of the process of the vehicle 300 weighing the vehicle, please refer to the relevant description section of the air suspension system 200 mentioned above. To reduce redundancy, it will not be repeated here.

[0068] According to the vehicle 300 of this utility model embodiment, the pressure sensing component 110 is connected to the air suspension system. When the pressure inside the airbag in the air suspension system changes, it can detect the gas pressure inside the airbag and convert the gas pressure into a corresponding voltage signal. Then, the voltage signal is transmitted to the control module 120. The control module 120 determines the current load of the vehicle based on the received voltage signal and the correspondence between the voltage signal and the current load stored in its internal memory. This can efficiently and accurately monitor the actual load of the vehicle, making the load measurement process simpler. At the same time, the structure is simple and easy to implement, reducing costs.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle weighing system, characterized in that, include: A pressure sensing component, connected to the vehicle's air suspension system, is used to detect the gas pressure of the airbags in the air suspension system and convert the gas pressure into a corresponding voltage signal. A control module, connected to the pressure sensing component, is used to receive the voltage signal to determine the current load of the vehicle based on the voltage signal. The control module has a pre-defined correspondence between the voltage signal and the current load stored in it.

2. The vehicle weighing system according to claim 1, characterized in that, The pressure sensing component includes: The sensing unit is used to convert the change in gas pressure in the airbag into a corresponding resistance value when the gas pressure changes. A conversion unit, connected to the sensing unit, is used to convert the resistance value into the voltage signal output.

3. The vehicle weighing system according to claim 2, characterized in that, The sensing unit includes: A sensing diaphragm is used to generate corresponding mechanical deformation when the gas pressure in the airbag changes; A piezoresistive element is disposed on the sensing diaphragm to convert the mechanical deformation into the corresponding resistance value.

4. The vehicle weighing system according to claim 1, characterized in that, Also includes: The calibration module is connected to both the pressure sensing component and the control module. It receives the voltage signal and calibrates the voltage signal to output the calibrated voltage signal.

5. The vehicle weighing system according to claim 4, characterized in that, The correction module includes: A temperature detection unit is used to detect the operating ambient temperature of the pressure sensing component.

6. The vehicle weighing system according to claim 5, characterized in that, The correction module also includes: A signal correction unit is used to correct the voltage signal according to the operating environment temperature to output the corrected voltage signal. The signal correction unit has a pre-defined correspondence between the operating environment temperature and the voltage signal.

7. The vehicle weighing system according to claim 1, characterized in that, Also includes: A protective housing, wherein the pressure sensing component is installed within the cavity of the protective housing.

8. The vehicle weighing system according to claim 1, characterized in that, Also includes: The display module is connected to the control module and is used to receive a load signal sent by the control module to indicate the current load, and to display the current load based on the load signal.

9. An air suspension system, characterized in that, include: Airbags, and a vehicle weighing system as described in any one of claims 1-7.

10. A vehicle, characterized in that, include: The air suspension system as described in claim 9.

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