CN218228532U - Calibration equipment for vehicle tire pressure sensor - Google Patents

Abstract

The utility model discloses a calibration equipment to vehicle tire pressure sensor. The calibration equipment for the vehicle tire pressure sensor can realize that: the calibration equipment can automatically walk to each tire to be tested of a vehicle according to a preset route, the signal transmitting module is controlled to move to the first position and/or the second position at the tire to be tested, the signal transmitting module is controlled to transmit a request signal to the tire pressure sensor to be tested at the first position and/or the second position, and a request response signal transmitted by the tire pressure sensor to be tested is received through the signal receiving module, so that the tire pressure sensor to be tested of the tire to be tested can be automatically calibrated, the labor workload is reduced, the labor cost is reduced, and the calibration efficiency is improved.

Description

Calibration equipment for vehicle tire pressure sensor

Technical Field

The utility model relates to a vehicle electronics technical field especially relates to a calibration equipment to vehicle tire pressure sensor.

Background

With the safety of vehicles, the Ministry of industry and communications and the Ministry of transportation, passenger vehicles, commercial vehicles and the like are required to be additionally provided with tire pressure sensors. Therefore, the work of calibrating the vehicle to which the tire pressure sensor has been mounted follows.

The conventional calibration mode usually adopts manual handheld special equipment to calibrate each tire of each vehicle, so that the calibration workload is large, particularly, the calibration work on a trailer of a container truck and the trailer is huge, the manual calibration wastes time and labor, and the efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a calibration equipment to vehicle tire pressure sensor to the realization carries out automatic calibration to the tire pressure sensor of vehicle, reduces artificial work volume and cost, improves work efficiency.

According to the utility model discloses an aspect provides a calibration equipment to vehicle tire pressure sensor, and this calibration equipment to vehicle tire pressure sensor includes: the device comprises a base, a walking driving device connected with the base, a lifting module, a lifting plate, a signal transmitting module, a signal receiving module and a control module;

the control module is at least electrically connected with the walking driving device, the lifting module, the signal transmitting module and the signal receiving module; the signal transmitting module and the signal receiving module are arranged on the lifting plate, and the lifting plate is fixedly connected with the lifting module;

the walking driving device is used for driving the equipment to sequentially walk to the positions of the tires to be tested along a preset route according to the walking driving signals output by the control module;

the lifting module is used for adjusting the height of the lifting plate according to the height adjusting signal output by the control module so as to drive the signal transmitting module to move to a first position or a second position;

the control module is used for controlling the signal transmitting module to move to the first position and/or the second position to send a request signal to a tire pressure sensor to be detected of the tire to be detected when the equipment walks to the tire to be detected;

the signal receiving module is used for receiving a request response signal sent by a tire pressure sensor to be detected of a tire to be detected and sending the request response signal to the control module;

the control module is also used for calibrating the tire pressure sensor of each tire to be tested when the request response signal is received.

Optionally, the control module comprises a first control unit and a second control unit; the first control unit is at least electrically connected with the walking driving device, the lifting module and the second control unit; the second control unit is electrically connected with the signal transmitting module and the signal receiving module respectively;

the first control unit is used for outputting a walking driving signal to the walking driving device so as to drive the equipment to sequentially walk to the positions of the tires to be tested along a preset route; outputting a height adjusting signal to the lifting module to adjust the height of the lifting plate so as to drive the signal transmitting module to move to the first position or the second position;

the second control unit is used for controlling the signal transmitting module to send a request signal to a tire pressure sensor to be tested of a tire to be tested when the signal transmitting module moves to the first position or the second position, and calibrating the tire pressure sensor of each tire to be tested when the request response signal is received.

Optionally, the walking driving device at least comprises four walking driving units, and each walking driving unit at least comprises a first driving unit, a first motor and wheels; the control module is electrically connected with the first driving unit, the first driving unit is electrically connected with the first motor, and an output shaft of the first motor is connected with the wheel; the control module is used for outputting a walking driving signal to the first driving unit so as to drive the first motor to drive the wheels to walk to the positions of the tires to be tested along a preset route.

Optionally, the lifting module includes a second driving unit and a second motor, the second motor is electrically connected to the second driving unit, the second driving unit is electrically connected to the control module, and the lifting plate is fixedly connected to an output shaft of the second motor; the control module is used for outputting a height adjusting signal to the second driving unit so as to adjust the height of the lifting plate to drive the signal transmitting module to move to the first position or the second position.

Optionally, the signal transmitting module is a low frequency transmitter.

Optionally, the signal receiving module is a high frequency receiver.

Optionally, the calibration equipment for the vehicle tire pressure sensor further comprises an air pressure detection module, which is arranged on the lifting plate, electrically connected with the control module, and used for detecting the height of the lifting plate and sending the height to the control module.

Optionally, the calibration device for the vehicle tire pressure sensor further includes an attitude information detection module, electrically connected to the control module, and configured to acquire attitude information of the device and send the attitude information to the control module.

Optionally, the calibration equipment for the vehicle tire pressure sensor further comprises a power supply module, a charging module and a wireless module; the power module, the charging module and the wireless module are electrically connected with the control module.

Optionally, the request response signal includes at least an ID number of the tire pressure sensor to be tested.

The utility model discloses technical scheme through providing a calibration equipment to vehicle tire pressure sensor, should include the calibration equipment to vehicle tire pressure sensor: the device comprises a base, a walking driving device connected with the base, a lifting module, a lifting plate, a signal transmitting module, a signal receiving module and a control module; the control module is at least electrically connected with the walking driving device, the lifting module, the signal transmitting module and the signal receiving module; the signal transmitting module and the signal receiving module are arranged on the lifting plate, and the lifting plate is fixedly connected with the lifting module; the walking driving device is used for driving the equipment to sequentially walk to the positions of the tires to be tested along a preset route according to the walking driving signals output by the control module; the lifting module is used for adjusting the height of the lifting plate according to the height adjusting signal output by the control module so as to drive the signal transmitting module to move to a first position or a second position; the control module is used for controlling the signal transmitting module to send a request signal to a tire pressure sensor to be detected of the tire to be detected when the equipment walks to the tire to be detected and moves to the first position and/or the second position; the signal receiving module is used for receiving a request response signal sent by a tire pressure sensor to be tested of a tire to be tested and sending the request response signal to the control module; the control module is also used for calibrating the tire pressure sensor of each tire to be tested when the request response signal is received. The device can realize that: the calibration equipment can automatically walk to each tire to be tested of a vehicle according to a preset route, the signal transmitting module is controlled to move to the first position and/or the second position at the tire to be tested, the signal transmitting module is controlled to transmit a request signal to the tire pressure sensor to be tested at the first position and/or the second position, and a request response signal transmitted by the tire pressure sensor to be tested is received through the signal receiving module, so that the tire pressure sensor to be tested of the tire to be tested can be automatically calibrated, the labor workload is reduced, the labor cost is reduced, and the calibration efficiency is improved.

It should be understood that the statements herein are not intended to identify key or critical features of any embodiment of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is a schematic structural diagram of a calibration apparatus for a tire pressure sensor of a vehicle provided in an embodiment of the present invention;

fig. 2 is a block diagram of a circuit structure of a calibration apparatus for a tire pressure sensor of a vehicle provided in an embodiment of the present invention;

fig. 3 is a schematic diagram of a calibration route of a tire pressure sensor of a vehicle provided in an embodiment of the present invention;

fig. 4 is a schematic diagram of calibration of a calibration apparatus provided in an embodiment of the present invention at a first position;

fig. 5 is a schematic diagram of calibration of a calibration apparatus provided in an embodiment of the present invention at a second position;

fig. 6 is a block diagram of a circuit structure of another calibration apparatus for a tire pressure sensor of a vehicle provided in an embodiment of the present invention;

fig. 7 is an electrically controlled connection diagram of a calibration device for a tire pressure sensor of a vehicle provided in an embodiment of the present invention;

fig. 8 is a logic diagram of the main function of the ECU provided in the embodiment of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is the embodiment of the utility model provides a structural schematic diagram to calibration equipment of vehicle tire pressure sensor, fig. 2 is the embodiment of the utility model provides a circuit structure block diagram to calibration equipment of vehicle tire pressure sensor, fig. 3 is the embodiment of the utility model provides a route schematic diagram to vehicle tire pressure sensor calibration. Referring to fig. 1 to 3, the calibration apparatus 100 for a tire pressure sensor of a vehicle includes: the device comprises a base 10, a walking driving device 20 connected with the base 10, a lifting module 30, a lifting plate 40, a signal transmitting module 50, a signal receiving module 60 and a control module 70; wherein, the control module 70 is at least electrically connected with the walking driving device 20, the lifting module 30, the signal transmitting module 50 and the signal receiving module 60; the signal transmitting module 50 and the signal receiving module 60 are arranged on the lifting plate 40, and the lifting plate 40 is fixedly connected with the lifting module 30; the walking driving device 20 is configured to drive the equipment to sequentially walk to each tire to be tested along a preset route according to a walking driving signal output by the control module 70; the lifting module 30 is used for adjusting the height of the lifting plate 40 according to the height adjusting signal output by the control module 70 to drive the signal emitting module 50 to move to the first position or the second position; the control module 70 is configured to send a request signal to a tire pressure sensor to be tested of the tire to be tested when the apparatus walks to the tire to be tested and the signal transmitting module 50 is controlled to move to the first position and/or the second position; the signal receiving module 60 is configured to receive a request response signal sent by a tire pressure sensor of a tire to be tested and send the request response signal to the control module 70; the control module 70 is further configured to calibrate the tire pressure sensor of each tire under test upon receiving the request response signal.

The preset route refers to a walking route planned around each tire of the vehicle to be tested, namely the walking route which rounds around the vehicle. For example, the walking route planned by the markers 1 to 8 around the vehicle shown in fig. 3. When the vehicle to be measured is calibrated, the calibration equipment only needs to sequentially walk to the tire to be measured according to a preset route, and then the tire pressure sensor of each tire to be measured is calibrated. The tire pressure sensor of each tire to be detected is calibrated, including the tire pressure sensors, and the tires where the tire pressure sensors are located, so that the system can accurately acquire the tire pressure state information corresponding to each tire in the follow-up tire pressure monitoring process, and can accurately acquire which tire pressure corresponding to which tire is abnormal when abnormal conditions such as tire burst occur. The step of calibrating each tire pressure sensor may be numbering each tire pressure sensor. The tire at each tire pressure sensor can be marked by marking each tire, so that the marks of the tire pressure sensors corresponding to each tire are accurately corresponding to each other, and the tire pressure sensors corresponding to which tire can be accurately traced in time when the tire pressure problem occurs in the follow-up process conveniently.

Fig. 4 is a schematic diagram of calibration of the calibration apparatus provided in the embodiment of the present invention at a first position, and fig. 5 is a schematic diagram of calibration of the calibration apparatus provided in the embodiment of the present invention at a second position. A calibration schematic of a double row comprising an outer wheel 11 and an inner wheel 12 is shown in figures 4 and 5. Wherein, be provided with first child pressure sensor 13 on the outer wheel 11, the current position state of first child pressure sensor 13 is in the minimum of outer wheel. The inner wheel 12 is provided with a second tire pressure sensor 14, and the current position state of the second tire pressure sensor 14 is at the highest position of the inner wheel.

Generally, a vehicle is provided with a tire pressure sensor on each tire, and the tire pressure sensor is generally disposed at a valve of the tire. In the calibration, the position state of the valve of the tire to be measured is set to be located at the lowest position (approximate) or the highest position (approximate) of the tire, for example, the first tire pressure sensor of the outer wheel 13 shown in fig. 4 is located at the lowest position of the outer wheel, and the second tire pressure sensor of the inner wheel 14 shown in fig. 5 is located at the highest position of the inner wheel. Thus, the first position is a height where the height of the rising and lowering plate 40 in the vertical direction is close to the lowest position of the tire, and the second position is a height where the height of the rising and lowering plate 40 in the vertical direction is close to the highest position of the tire. In other words, the position state of the tire pressure sensor under test of the tire under test of the present embodiment may be set in advance as follows: either at the lowest or highest tire for calibration. The specific height values of the first position and the second position can be preset according to information such as the specific size of the tire, the specific size of the calibration equipment and the like. The specific numerical values thereof may be set according to actual conditions, and are not specifically limited herein.

The lifting plate 40 is fixedly connected to the lifting module 30, and the lifting module 30 can move in the vertical direction according to the height adjustment signal output by the control module 70. For example, it may be moved in a vertical direction to the height of the first position or the height of the second position. Since the signal transmitting module 50 and the signal receiving module 60 are provided on the elevating plate 40, they can be moved together in the same manner as the movement of the elevating plate 40. Therefore, the lifting module 30 can adjust the height of the lifting plate 40 according to the height adjusting signal output by the control module 70 to drive the signal transmitting module 50 to move to the first position or the second position.

Illustratively, a single tire calibration is used, such as outer wheel 11 shown in FIG. 4. When the vehicle to be calibrated needs to be calibrated, the control module 70 controls the calibration device 100 for the tire pressure sensor of the vehicle to travel to the tire to be calibrated (for example, the outer wheel 11) of the vehicle according to the preset route, adjusts the height of the lifting plate 40 by controlling the lifting module 30 to control the signal transmitting module 50 to move to the first position and/or the second position, and then controls the signal transmitting module 50 to send a request signal to the tire pressure sensor to be calibrated of the tire to be calibrated. It should be noted that, since the tire pressure sensor to be tested of the tire to be tested may be located at the lowest position of the tire (corresponding to the first position, as shown in the calibration of fig. 4), or may be located at the highest position of the tire (corresponding to the second position, as shown in the calibration of fig. 5). Therefore, the control module 70 can control the signal transmitting module 50 to perform the calibration test at the lowest position of the tire first, and to perform the calibration test at the highest position if the tire pressure sensor to be tested is not detected. Or firstly carrying out calibration test at the highest position of the tire, and then carrying out calibration test at the lowest position if the tire pressure sensor to be tested cannot be detected. For example, the control module 70 first controls the lifting module 30 to adjust the height of the lifting plate 40 to control the signal transmitting module 50 to move to the first position, and controls the signal transmitting module 50 to transmit a request signal to the tire pressure sensor to be tested of the tire to be tested, and if the signal receiving module 60 receives a request response signal transmitted by the tire pressure sensor to be tested, it indicates that the tire pressure sensor to be tested of the tire to be tested is located at the lowest position of the tire, and the control module 70 may directly calibrate the tire pressure sensor to be tested. If the signal receiving module 60 does not receive the request response signal sent by the tire pressure sensor to be tested (the corresponding control module 70 does not receive the request response signal either), it indicates that the tire pressure sensor to be tested of the tire to be tested is not located at the lowest position of the tire, but located at the highest position of the tire, the control module 70 controls the lifting module 30 to adjust the height of the lifting plate 40 to control the signal transmitting module 50 to move to the second position, and controls the signal transmitting module 50 to send the request signal to the tire pressure sensor to be tested of the tire to be tested, if the signal receiving module 60 receives the request response signal sent by the tire pressure sensor to be tested, it indicates that the tire pressure sensor to be tested of the tire to be tested is located at the highest position of the tire, and the control module 70 directly calibrates the request response signal. Further, it is also possible to provide: the highest position of the tire is calibrated, that is, the signal transmitting module 50 is controlled to move to the second position and send a request signal to the tire pressure sensor to be tested of the tire to be tested. The specific setting can be set according to actual conditions, and is not specifically limited herein.

The walking driving signal can be a high level signal or a low level signal. The height adjustment signal may also be a high or low signal. The setting may be specifically performed according to actual conditions, and is not specifically limited herein.

When the signal transmitting module 50 sends a request signal to the tire to be tested at the first position or the second position, if the signal receiving module 60 receives a request response signal sent by the tire pressure sensor, it indicates that the tire pressure sensor of the tire to be tested is located at the lowest position or the highest position of the corresponding tire. This is because each tire pressure sensor is provided therein with a signal receiver and a signal transmitter. When the signal transmitting module 50 transmits a request signal to the tire pressure sensor, the signal receiver in the tire pressure sensor responds when receiving the request signal, and transmits a request response signal to the outside through the signal transmitter therein. Wherein, the signal receiver in the tire pressure sensor can be a high-frequency receiver, and the signal transmitter can be a low-frequency transmitter. The transmission frequency range of the low-frequency transmitter is related to the frequency transmission range of the signal transmission module, and may be set according to actual conditions, which is not limited herein.

In the technical solution of this embodiment, the implementation process of the calibration device for the tire pressure sensor of the vehicle is as follows: referring to fig. 1 to 5, taking the calibration of a single outer wheel 11 shown in fig. 4 or 5 as an example, when a vehicle to be calibrated needs to be calibrated, the control module 70 outputs a walking driving signal to the walking driving device 20, and the walking driving device 20 drives the calibration equipment 100 to sequentially walk to the tire to be calibrated according to a preset route according to the walking driving signal, for example, as shown in fig. 3, the vehicle walks to the tire to be calibrated at each marked position according to routes marked by 1 to 8 to calibrate each tire to be calibrated. Assuming that the calibration device travels to the mark 1 shown in fig. 3 to calibrate the tire to be measured at the mark 1, the control module 70 outputs a height adjustment signal to the lifting module 30, the lifting module 30 adjusts the height of the lifting plate 40 to a first position according to the height adjustment signal to drive the signal transmitting module 50 to move to the first position, after the signal transmitting module 50 moves to the first position, the control module 70 controls the signal transmitting module 50 to transmit a request signal to the tire to be measured at the first position, and if the signal receiving module 60 receives a request response signal transmitted by the tire pressure sensor to be measured, it is indicated that the tire pressure sensor to be measured of the tire to be measured is located at the lowest position of the tire, and the control module 70 directly calibrates the tire to be measured. If the signal receiving module 60 does not receive the request response signal sent by the tire pressure sensor to be tested (the corresponding control module 70 does not receive the request response signal), which indicates that the tire pressure sensor to be tested of the tire to be tested is not located at the lowest position of the tire, but located at the highest position of the tire, the control module 70 controls the lifting module 30 to adjust the height of the lifting plate 40 to the second position, so as to drive the signal transmitting module 50 to move to the second position, and controls the signal transmitting module 50 to send the request signal to the tire pressure sensor to be tested of the tire to be tested, if the signal receiving module 60 receives the request response signal sent by the tire pressure sensor to be tested, it indicates that the tire pressure sensor to be tested of the tire to be tested is located at the highest position of the tire, and the control module 70 directly calibrates the tire pressure sensor to be tested. In addition, it can also be arranged that the calibration test is performed at the highest point of the tire. Thereby, it is possible to realize: the calibration equipment can automatically walk to each tire to be tested of a vehicle according to a preset route, the signal transmitting module 50 is controlled to move to the first position and/or the second position at the tire to be tested, the signal transmitting module 50 is controlled to transmit a request signal to the tire pressure sensor to be tested at the first position and/or the second position, and a request response signal transmitted by the tire pressure sensor to be tested is received through the signal receiving module, so that the tire pressure sensor to be tested of the tire to be tested can be automatically calibrated, the workload of workers is reduced, the labor cost is reduced, and the calibration efficiency is improved. Further, the control module 70 may control the calibration device to sequentially calibrate the tire to be measured at each marked position according to a preset route, thereby autonomously completing the calibration work for one circle around the vehicle, and achieving the functions of releasing manpower and improving efficiency.

The utility model discloses technical scheme through providing a calibration equipment to vehicle tire pressure sensor, should include the calibration equipment to vehicle tire pressure sensor: the device comprises a base, a walking driving device connected with the base, a lifting module, a lifting plate, a signal transmitting module, a signal receiving module and a control module; the control module is at least electrically connected with the walking driving device, the lifting module, the signal transmitting module and the signal receiving module; the signal transmitting module and the signal receiving module are arranged on the lifting plate, and the lifting plate is fixedly connected with the lifting module; the walking driving device is used for driving the equipment to sequentially walk to the positions of the tires to be tested along a preset route according to the walking driving signals output by the control module; the lifting module is used for adjusting the height of the lifting plate according to the height adjusting signal output by the control module so as to drive the signal transmitting module to move to a first position or a second position; the control module is used for controlling the signal transmitting module to transmit a request signal to a tire pressure sensor to be tested of the tire to be tested when the equipment walks to the tire to be tested and the signal transmitting module moves to the first position and/or the second position; the signal receiving module is used for receiving a request response signal sent by a tire pressure sensor to be tested of a tire to be tested and sending the request response signal to the control module; the control module is also used for calibrating the tire pressure sensor of each tire to be tested when the request response signal is received. The device can realize that: the calibration equipment can automatically walk to each tire to be tested of a vehicle according to a preset route, the signal transmitting module is controlled to move to the first position and/or the second position at the tire to be tested, the signal transmitting module is controlled to transmit a request signal to the tire pressure sensor to be tested at the first position and/or the second position, and a request response signal transmitted by the tire pressure sensor to be tested is received through the signal receiving module, so that the tire pressure sensor to be tested of the tire to be tested can be automatically calibrated, the labor workload is reduced, the labor cost is reduced, and the calibration efficiency is improved.

It should be noted that, the technical scheme of this embodiment is also applicable to automatic calibration of a tire pressure sensor with double-row wheels. When the double-row vehicle is calibrated, the distance L0 from a signal transmitting module (or a transmitting antenna) to the vehicle edge line of the vehicle to be tested is the maximum transmitting distance of the signal transmitting module on a preset route (particularly, the distance is related to the frequency range selection of the signal transmitting module and can be set according to specific conditions). For example, the inner wheel 12 and the outer wheel 11 of the double row wheel shown in fig. 4 and 5 are calibrated. The specific implementation process is as follows: when a vehicle to be tested (double-row wheel) needs to be calibrated, the control module 70 controls the calibration device of the pair of vehicle tire pressure sensors to travel to the tire to be tested of the vehicle according to a preset route (at this time, the distance between the signal transmitting module and the outer wheel 11 is L0, so that the tire pressure sensor of the outer wheel 11 enters the signal transmitting distance range of the signal transmitting module 50), the control module 70 outputs a height adjusting signal to the lifting module 30, the lifting module 30 adjusts the height of the lifting plate 40 to a first position according to the height adjusting signal to drive the signal transmitting module 50 to move to the first position, and after the signal transmitting module 50 moves to the first position, the control module 70 controls the signal transmitting module 50 to send a request signal to the tire to be tested at the first position. If the signal receiving module 60 receives the request response signal sent by the tire pressure sensor to be measured, it indicates that the tire pressure sensor to be measured of the outer wheel 11 is located at the lowest position of the tire, and the control module 70 may calibrate the outer wheel 11 directly. If the signal receiving module 60 does not receive the request response signal sent by the tire pressure sensor to be tested (the corresponding control module 70 does not receive the request response signal), which indicates that the tire pressure sensor to be tested of the outer wheel 11 is not located at the lowest position of the outer wheel but located at the highest position of the outer wheel, the control module 70 controls the lifting module 30 to adjust the height of the lifting plate 40 to the second position, so as to drive the signal transmitting module 50 to move to the second position, and controls the signal transmitting module 50 to send the request signal to the tire pressure sensor to be tested of the outer wheel 11, if the signal receiving module 60 receives the request response signal sent by the tire pressure sensor to be tested, which indicates that the tire pressure sensor to be tested of the outer wheel 11 is located at the highest position of the outer wheel, the control module 70 directly calibrates the outer wheel 11. In addition, it may be set to perform calibration test at the highest position of the outer wheel 11.

After the outer wheel 11 is calibrated, the control module 70 controls the calibration device to move a distance of L0 in a direction close to the outer wheel 11 by controlling the travel driving device, so that the tire pressure sensor of the outer wheel 11 avoids the signal transmission distance range of the signal transmission module 50, and the tire pressure sensor of the inner wheel 12 enters the signal transmission distance range of the signal transmission module 50. After the calibration apparatus 100 moves a distance L0 in a direction approaching the outer wheel 11, the inner wheel 12 is calibrated again in the above-described manner for calibrating the outer wheel 11. Therefore, the tire pressure sensor can be calibrated for the vehicle with double-row wheels, the manual workload is reduced, the working efficiency is improved, and the application range is enlarged. Further, the control module 70 can control the calibration device to sequentially calibrate the outer wheel and the inner wheel of the to-be-measured double-row wheel at each marking position according to a preset route, so that the calibration work of one circle around the vehicle can be automatically completed, and the functions of releasing manpower and improving efficiency are realized.

It should be noted that, for a double-row tire, it is usually necessary to manually set in advance: the tire pressure sensors of the inner wheel and the outer wheel are preset to be opposite in position (or the position of the air valve), so that the tire pressure sensors of the double-row wheels can be detected. For example, when the valve position state of the inner wheel is set at the lowest position of the tire, the valve position state of the outer wheel is set at the highest position of the tire. Or conversely, the valve position state of the inner wheel is set at the highest position of the tire, and the valve position state of the outer wheel is set at the lowest position of the tire. The calibration equipment provided by the embodiment can be suitable for tire pressure calibration detection in scenes such as vehicle maintenance stations, vehicle management stations and the like.

Fig. 6 is a block diagram of a circuit structure of another calibration apparatus for a tire pressure sensor of a vehicle provided in an embodiment of the present invention. As an embodiment, optionally, with reference to fig. 6, the control module 70 comprises a first control unit 71 and a second control unit 72; wherein, the first control unit 71 is electrically connected with at least the walking driving device 20, the lifting module 30 and the second control unit 72; the second control unit 72 is electrically connected with the signal transmitting module 50 and the signal receiving module 60 respectively; the first control unit 71 is configured to output a walking driving signal to the walking driving device 20 to drive the apparatus to sequentially walk to each tire to be tested along a preset route; outputting a height adjusting signal to the lifting module 30 to adjust the height of the lifting plate 40 to drive the signal emitting module 50 to move to the first position or the second position; the second control unit 72 is configured to control the signal transmitting module 50 to send a request signal to a tire pressure sensor of a tire to be tested when the signal transmitting module 50 moves to the first position or the second position, and calibrate the tire pressure sensor of each tire to be tested when receiving the request response signal.

The first Control Unit 71 and the second Control Unit 72 may be Micro Control Units (MCUs).

The second control unit 72 may be disposed on the lifting plate 40, the second control unit 72 is electrically connected to the signal transmitting module 50 and the signal receiving module 60, and is configured to control the signal transmitting module 50 to send a request signal to a tire pressure sensor of a tire to be tested when calibrating the tire to be tested, the tire pressure sensor to be tested sends a request response signal to the signal receiving module 60 when receiving the request signal, the signal receiving module 60 sends the request response signal to the second control unit 72 when receiving the request response signal, and the second control unit 72 calibrates the tire pressure sensor to be tested according to the request response signal. Further, the second control unit 72 may send the calibration results for each tire under test to the first control unit 71.

Optionally, the request response signal includes at least an ID number of the tire pressure sensor to be tested.

The second control unit 72 may mark the tires to be tested in sequence according to the sequence of the calibration of the tires to be tested in the preset route, for example, sequentially numbering the tires using natural numbers. The second control unit 72 may calibrate the tire pressure sensor of the tire to be tested according to the ID number of the tire pressure sensor to be tested, which is obtained according to the tire to be tested with the corresponding number. For example, if the number of the tire to be tested is the third tire, the second control unit 72 obtains the ID number of the tire pressure sensor of the third tire, and uses the ID number as the number of the tire pressure sensor of the third tire, thereby achieving the calibration.

Optionally, the walking drive device comprises at least four walking drive units, each walking drive unit comprises at least a first drive unit 201, a first motor 202 and wheels 203; the control module 70 is electrically connected with the first driving unit 201, the first driving unit 201 is electrically connected with the first motor 202, and an output shaft of the first motor 202 is connected with the wheel 203; the control module 70 is configured to output a walking driving signal to the first driving unit 201 to drive the first motor 201 to drive the wheel to walk to each tire to be tested along a preset route.

The walking drive device includes four walking drive units, such as a first walking drive unit 21, a second walking drive unit 22, a third walking drive unit 23, and a fourth walking drive unit 24 shown in fig. 1. Wherein each walking drive unit comprises a first motor, a first drive unit and wheels.

The first driving unit 201 may be a driver, and the first motor 202 may be a dc motor. The walking driving signal can be a high level signal or a low level signal. The control module 70 may drive the first motor 202 to rotate by outputting the walking driving signal to the first driving unit 201, and the first motor 202 rotates to drive the corresponding wheel to rotate through an output shaft thereof. Therefore, the control module 70 can drive the first motor of each walking driving unit to rotate by sending a walking driving signal to the first driving unit of each walking driving unit, so as to drive the four wheels to rotate, thereby realizing self-walking of the calibration equipment. Wherein the rotational speed and the steering of each wheel can be set by means of a travel drive signal. For example, the duty ratio, the period, and the like of the low level after the high level is set may be specifically set according to the actual situation, and is not specifically limited herein.

Optionally, the lifting module 30 includes a second driving unit 31 and a second motor 32, the second motor 32 is electrically connected to the second driving unit 31, the second driving unit 31 is electrically connected to the control module 70, and the lifting plate 40 is fixedly connected to an output shaft of the second motor 32; the control module 70 is configured to output a height adjustment signal to the second driving unit 31 to adjust the height of the lifting plate 40 to drive the signal emitting module 50 to move to the first position or the second position.

Wherein, the second driving unit 31 may be a driver, and the second motor 32 may be a lifting motor. The height adjustment signal may be a high level signal or a low level signal. The control module 70 may drive the second motor 32 to rotate by outputting the height adjustment signal to the second driving unit 31, and since the lifting plate 40 is fixedly connected to the output shaft of the second motor 32, the second motor 32 can rotate to drive the lifting plate to move in the vertical direction through the output shaft. Furthermore, the height values of the first position and the second position are preset, so that the lifting plate can be adjusted to the first position or the second position by setting the duty ratio, the period and the like of the height adjusting signal.

Optionally, the signal transmitting module is a low frequency transmitter.

Referring to fig. 1, the calibration apparatus for a tire pressure sensor of a vehicle further includes a low frequency antenna 51. Wherein the signal transmitting module 50 transmits the request signal through the low frequency antenna. The frequency range of the low-frequency transmitter is related to the frequency range of the signal receiver of the tire pressure sensor, the distance from the signal transmitting module to the vehicle edge line and the like, and the frequency range of the low-frequency transmitter can be specifically set according to actual conditions, and is not specifically limited herein.

Optionally, the signal receiving module is a high frequency receiver.

Referring to fig. 1, the calibration apparatus for a tire pressure sensor of a vehicle further includes a high frequency antenna 62. The signal receiving module 60 receives a request response signal transmitted by the tire pressure sensor through the high frequency antenna.

Optionally, the calibration apparatus for a tire pressure sensor of a vehicle further includes an air pressure detecting module 80 disposed on the lifting plate 40 and electrically connected to the control module 70, for detecting the height of the lifting plate 40 and sending the height to the control module 70.

The air pressure detecting module 80 is disposed on the lifting plate 40, moves in the vertical direction together with the lifting plate 40 and the signal emitting module 50, and can be used to detect and obtain the height information of the signal emitting module 50 and send the height information to the control module 70, and the control module 70 can compare whether the detected height information reaches the preset first position or second position height through a comparator (the comparator may be disposed in the control module).

The air pressure detecting module 80 may be a barometer.

Optionally, the calibration device for the vehicle tire pressure sensor further includes an attitude information detection module 90, electrically connected to the control module 70, for acquiring the attitude information of the device and sending the attitude information to the control module 70.

The attitude information detection module 90 may be disposed on the base 10, and configured to acquire attitude information of the calibration device and send the attitude information to the control module 70. The attitude information may include triaxial acceleration information, triaxial angular velocity information, triaxial angle information, and the like of the calibration device.

The attitude information detection module 90 may be an attitude inertial sensor. The attitude inertial sensor is provided with an X/Y/Z three-way acceleration sensor and a P/Y/R three-axis angular velocity steering signal, and can acquire acceleration information, angular velocity information and the like of the calibration equipment. The control module 70 can plan the stroke, the route and the like of the calibration device by adopting a trajectory calculation and positioning method based on the inertial sensor, so that the calibration device can walk according to the preset route.

Optionally, the calibration equipment for the vehicle tire pressure sensor further comprises a power supply module 110, a charging module 120 and a wireless module 130; the power module 110, the charging module 120 and the wireless module 130 are electrically connected to the control module 70.

The power module 110 may be a battery, such as a rechargeable lithium battery, for supplying power to the calibration device. The charging module 120 may charge the power module 110. The wireless module 130 may be a bluetooth module, a wireless WIFI module, or the like.

Fig. 7 is an electronic control connection schematic diagram of a calibration device for a vehicle tire pressure sensor provided in an embodiment of the present invention. Referring to fig. 7, the signal transmitting module, the signal receiving module, and the second control unit may be integrated inside the wireless controller 101. The power module, the charging module, the wireless module, the first control unit, the driving unit (including the first driving unit and the second driving unit), and the attitude information detection module may form an ECU control unit 102 of the whole calibration apparatus.

Fig. 8 is a logic diagram of the main function of the ECU provided in the embodiment of the present invention. As shown in fig. 8, the position calibration is initialized first, the vehicle information is output, and then whether the vehicle reaches the position P is judged, if yes, the calibration is performed, and if not, an error alarm is performed. Further, whether calibration is completed or not is judged, and if the calibration is not completed, an error alarm is given; if the calibration is finished, whether the inner wheel is calibrated is judged, if so, the inner wheel is calibrated, and if not, whether the last tire is calibrated is judged. If the tire is the last tire, the end is informed, if not, the tire continues to run to the next position P +1, and the step is returned to be judged repeatedly.

It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present invention may be executed in parallel, may be executed sequentially, or may be executed in different orders, as long as the desired result of the technical solution of the present invention can be achieved, and the present invention is not limited thereto.

The above detailed description does not limit the scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A calibration device for a tire pressure sensor of a vehicle, comprising: the device comprises a base, a walking driving device connected with the base, a lifting module, a lifting plate, a signal transmitting module, a signal receiving module and a control module;

the control module is at least electrically connected with the walking driving device, the lifting module, the signal transmitting module and the signal receiving module; the signal transmitting module and the signal receiving module are arranged on the lifting plate, and the lifting plate is fixedly connected with the lifting module;

the walking driving device is used for driving the equipment to sequentially walk to the positions of the tires to be tested along a preset route according to the walking driving signals output by the control module;

the lifting module is used for adjusting the height of the lifting plate according to the height adjusting signal output by the control module so as to drive the signal transmitting module to move to a first position or a second position;

the control module is used for controlling the signal transmitting module to move to the first position and/or the second position to send a request signal to a tire pressure sensor to be detected of the tire to be detected when the equipment walks to the tire to be detected;

the signal receiving module is used for receiving a request response signal sent by a tire pressure sensor to be tested of a tire to be tested and sending the request response signal to the control module;

the control module is also used for calibrating the tire pressure sensor of each tire to be tested when the request response signal is received.

2. Calibration arrangement for a tire pressure sensor of a vehicle according to claim 1, characterized in that the control module comprises a first control unit and a second control unit; the first control unit is at least electrically connected with the walking driving device, the lifting module and the second control unit; the second control unit is electrically connected with the signal transmitting module and the signal receiving module respectively;

the first control unit is used for outputting a walking driving signal to the walking driving device so as to drive the equipment to sequentially walk to the tire to be tested along a preset route; outputting a height adjusting signal to the lifting module to adjust the height of the lifting plate so as to drive the signal transmitting module to move to the first position or the second position;

the second control unit is used for controlling the signal transmitting module to send a request signal to a tire pressure sensor to be tested of a tire to be tested when the signal transmitting module moves to the first position or the second position, and calibrating the tire pressure sensor of each tire to be tested when the request response signal is received.

3. The calibration apparatus for tire pressure sensor of vehicle according to claim 1, wherein said traveling drive device comprises at least four traveling drive units, each of said traveling drive units comprises at least a first drive unit, a first motor and a wheel; the control module is electrically connected with the first driving unit, the first driving unit is electrically connected with the first motor, and an output shaft of the first motor is connected with the wheel; the control module is used for outputting a walking driving signal to the first driving unit so as to drive the first motor to drive the wheels to walk to the positions of the tires to be tested along a preset route.

4. The calibration equipment for the tire pressure sensor of the vehicle as claimed in claim 1, wherein the lifting module comprises a second driving unit and a second motor, the second motor is electrically connected with the second driving unit, the second driving unit is electrically connected with the control module, and the lifting plate is fixedly connected with an output shaft of the second motor; the control module is used for outputting a height adjusting signal to the second driving unit so as to adjust the height of the lifting plate to drive the signal transmitting module to move to the first position or the second position.

5. The calibration device for the tire pressure sensor of the vehicle according to claim 1, wherein the signal transmitting module is a low frequency transmitter.

6. Calibration equipment for a tire pressure sensor of a vehicle according to claim 1, characterized in that the signal receiving module is a high frequency receiver.

7. The apparatus for calibrating a tire pressure sensor of a vehicle of claim 1, further comprising an air pressure detecting module disposed on the lifting plate and electrically connected to the control module, for detecting the height of the lifting plate and sending the height to the control module.

8. The calibration equipment for the tire pressure sensor of the vehicle as claimed in claim 1, further comprising an attitude information detection module electrically connected with the control module for acquiring attitude information of the equipment and sending the attitude information to the control module.

9. The calibration equipment for the vehicle tire pressure sensor according to claim 1, further comprising a power supply module, a charging module and a wireless module; the power module, the charging module and the wireless module are all electrically connected with the control module.

10. Calibration arrangement for a tire pressure sensor of a vehicle according to claim 1, characterized in that the request response signal comprises at least the ID number of the tire pressure sensor to be tested.

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