CN217084064U - Testing device of tire pressure sensor - Google Patents
Testing device of tire pressure sensor Download PDFInfo
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- CN217084064U CN217084064U CN202220900400.8U CN202220900400U CN217084064U CN 217084064 U CN217084064 U CN 217084064U CN 202220900400 U CN202220900400 U CN 202220900400U CN 217084064 U CN217084064 U CN 217084064U
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Abstract
The utility model provides a tire pressure sensor's testing arrangement, the device includes: the device comprises a controller, a signal sending module, a signal receiving module, a communication interface module and an adjustable power supply module; the signal sending module is used for sending radio frequency signals to the tire pressure sensor in a close range or a long range according to the trigger signals of the controller, so that the radio frequency signals trigger the tire pressure sensor at a low frequency; the signal receiving module is used for sending feedback data sent by the tire pressure sensor to the controller; the adjustable power supply module is used for outputting an adjustable voltage signal according to the control signal output by the controller, so that the adjustable voltage signal adjusts the transmitting power of the signal transmitting module; the utility model discloses whether not only can test tire pressure sensor in closely scope and remote scope's performance normal, can also prevent other tire pressure sensor's signal interference, avoided the problem of spurious triggering.
Description
Technical Field
The utility model relates to a sensor test technical field especially relates to a tire pressure sensor's testing arrangement.
Background
The working principle of the tire pressure sensor is as follows: when the vehicle runs, the sensors mounted on the tires transmit the collected data such as tire pressure and tire temperature to the main controller through wireless signals, and the main controller analyzes and judges the received data such as tire pressure and tire temperature and displays and warns according to the analysis result.
In order to ensure the normal work of the tire pressure sensor, the performance of the tire pressure sensor needs to be tested before installation and use, and due to the fact that the installation position of the tire pressure sensor is close, test signals interfere with each other and are triggered by mistake in the existing test process, so that the accuracy of a test result is influenced.
It can be seen that the testing device of the tire pressure sensor in the prior art has the problem of easy false triggering, and the accuracy of the testing result of the tire pressure sensor is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of tire pressure sensor's testing arrangement, it has solved among the prior art tire pressure sensor's testing arrangement and has had the problem of easy spurious triggering, the utility model discloses whether not only can test tire pressure sensor in closely scope and remote scope's performance normal, can also prevent other tire pressure sensor's signal interference, avoided the problem of spurious triggering, improved tire pressure sensor's test accuracy and reliability.
The utility model provides a tire pressure sensor's testing arrangement, the device includes: the device comprises a controller, a signal sending module, a signal receiving module, a communication interface module and an adjustable power supply module; the input end of the signal sending module is connected with the controller, and the output end of the signal sending module is wirelessly connected with the tire pressure sensor when in use and is used for sending radio frequency signals to the tire pressure sensor in a short distance or a long distance according to the trigger signals of the controller so that the radio frequency signals trigger the tire pressure sensor at a low frequency; the input end of the signal receiving module is wirelessly connected with the tire pressure sensor when in use, and the output end of the signal receiving module is connected with the controller and used for receiving feedback data sent by the tire pressure sensor and sending the feedback data to the controller; the communication interface module is connected with the controller, and is also connected with a main control board when in use, so that the controller is in communication connection with the main control board, and the controller is also used for sending the feedback data to the main control board; the control end of the adjustable power supply module is connected with the controller, and the output end of the adjustable power supply module is connected with the signal sending module and used for outputting an adjustable voltage signal according to the control signal output by the controller, so that the adjustable voltage signal adjusts the transmitting power of the signal sending module.
Optionally, the signal sending module includes: the device comprises a trigger unit, a first transmitting unit, a second transmitting unit, a short-distance control unit and a long-distance control unit; the input end of the trigger unit is connected with the controller, and the output end of the trigger unit is respectively connected with the input end of the first transmitting unit and the input end of the second transmitting unit and used for receiving a trigger signal sent by the controller; the input end of the close-range control unit is connected with the controller, the power supply end of the close-range control unit is connected with the output end of the adjustable power supply module, and the output end of the close-range control unit is connected with the power supply end of the first transmitting unit and used for controlling the first transmitting unit to transmit radio-frequency signals to the tire pressure sensor in a close range according to a close-range trigger instruction of the controller; the input end of the remote control unit is connected with the controller, the power supply end of the remote control unit is connected with the output end of the adjustable power supply module, and the output end of the remote control unit is connected with the power supply end of the second transmitting unit and used for controlling the second transmitting unit to remotely transmit radio-frequency signals to the tire pressure sensor according to a remote triggering instruction of the controller; the output end of the first transmitting unit and the output end of the second transmitting unit are respectively in wireless connection with the tire pressure sensor.
Optionally, the trigger unit includes: the circuit comprises a first resistor, a second resistor and a first triode; the base electrode of the first triode is connected with the enabling end of the controller through the first resistor, the emitting electrode of the first triode is connected with the triggering end of the controller, the collecting electrode of the first triode is grounded through the second resistor, and the collecting electrode of the first triode is further connected with the input end of the first emission unit and the input end of the second emission unit respectively.
Optionally, the close-range control unit or the long-range control unit comprises: the first resistor, the second resistor, the third resistor, the fourth resistor, the third triode and the fourth resistor are connected in series; the base electrode of the second triode is connected with the controller through the third resistor, the emitting electrode of the second triode is grounded, and the emitting electrode of the second triode is also connected with the collector electrode of the second triode through the fourth resistor; the base electrode of the third triode is connected with the collector electrode of the second triode through the fifth resistor, the emitting electrode of the third triode is connected with the output end of the adjustable power supply module, and the collector electrode of the third triode is connected with the power supply end of the first emitting unit or the second emitting unit.
Optionally, the short-distance control unit or the long-distance control unit further comprises: a sixth resistor and a seventh resistor; the collector of the second triode is also connected with the output end of the adjustable power supply module through the sixth resistor; and the collector of the third triode is also grounded through the seventh resistor.
Optionally, the first transmitting unit or the second transmitting unit comprises: the MOS tube switch chip, the first capacitor, the first inductor and the eighth resistor; the input end of the MOS tube switch chip is connected with the output end of the trigger unit, the power end of the MOS tube switch chip is connected with the output end of the close-range control unit or the output end of the remote control unit, the output end of the MOS tube switch chip is connected with the first end of the first inductor through the first capacitor, and the second end of the first inductor is grounded through the eighth resistor.
Optionally, the signal receiving module includes: the device comprises a receiving antenna, a filter circuit and a radio frequency receiving chip; the receiving antenna is used for receiving feedback data sent by the tire pressure sensor; the input end of the radio frequency receiving chip is connected with the receiving antenna through the filter circuit, and the output end of the radio frequency receiving chip is connected with the controller and used for sending the feedback data to the controller.
Optionally, the adjustable power module comprises: the switching voltage regulator, the second inductor and the filter circuit; the input end of the switching voltage regulator is connected with a power supply, the control end of the switching voltage regulator is connected with the controller, the output end of the switching voltage regulator is connected with the first end of the second inductor, and the second end of the second inductor is grounded through the filter circuit; and the second end of the second inductor is the output end of the adjustable power supply module.
Optionally, the filter circuit comprises: the second capacitor, the third capacitor, the ninth resistor and the tenth resistor; the first end of the second capacitor and the first end of the ninth resistor are respectively connected with the second end of the second inductor, the second end of the second capacitor and the second end of the ninth resistor are respectively connected with the first end of the third capacitor and the first end of the tenth resistor, and the second end of the third capacitor and the second end of the tenth resistor are grounded.
Optionally, the switching voltage regulator comprises an LM2596R chip.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a triggering signal control signal sending module of controller closely or remote sending radio frequency signal to tire pressure sensor to it is right to make radio frequency signal tire pressure sensor carry out the low frequency and trigger, not only can test whether tire pressure sensor is normal at closely scope and remote scope's performance, can also prevent other tire pressure sensor's signal interference, has avoided the problem of spurious triggering, has improved tire pressure sensor's test accuracy and reliability.
2. The utility model discloses a voltage signal with adjustable power module output of control signal control of controller makes adjustable voltage signal adjusts the transmitting power of signalling module to can adjust testing arrangement radio frequency signal's transmitting power in real time according to tire pressure sensor's applied scene, not only improve testing arrangement's applied scene, still further improve the accuracy and the reliability of test result.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a testing device of a tire pressure sensor according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a signal sending module according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an adjustable power module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The functional units of the same reference numerals in the examples of the present invention have the same and similar structures and functions.
Example one
Fig. 1 is a schematic structural diagram of a testing apparatus of a tire pressure sensor provided in an embodiment of the present invention, as shown in fig. 1, the testing apparatus 100 of a tire pressure sensor provided in this embodiment specifically includes:
a controller 110, a signal transmitting module 120, a signal receiving module 130, a communication interface module 140 and an adjustable power supply module 150;
the input end of the signal transmitting module 120 is connected to the controller 110, and the output end of the signal transmitting module 120 is wirelessly connected to the tire pressure sensor 200 when in use, and is configured to transmit a radio frequency signal to the tire pressure sensor 200 in a short distance or a long distance according to a trigger signal of the controller 110, so that the radio frequency signal performs low-frequency triggering on the tire pressure sensor 200;
the input end of the signal receiving module 130 is wirelessly connected to the tire pressure sensor 200 when in use, and the output end of the signal receiving module 130 is connected to the controller 110 and is configured to receive feedback data sent by the tire pressure sensor 200 and send the feedback data to the controller 110;
the communication interface module 140 is connected to the controller 110, and when in use, the communication interface module 140 is further connected to a main control board 300, so as to enable the controller 110 to be in communication connection with the main control board 300, and also enable the controller 110 to send the feedback data to the main control board 300;
the control end of the adjustable power module 150 is connected to the controller 110, and the output end of the adjustable power module 150 is connected to the signal sending module 120, and is configured to output an adjustable voltage signal according to the control signal output by the controller 110, so that the adjustable voltage signal adjusts the transmission power of the signal sending module 120.
It should be noted that the utility model discloses a triggering signal control signal transmission module of controller closely or remote transmission radio frequency signal to tire pressure sensor to make radio frequency signal right tire pressure sensor carries out the low frequency and triggers, not only can test whether tire pressure sensor is normal at closely performance of scope and remote scope, can also prevent that other tire pressure sensors are signal interference, has avoided the problem of spurious triggering, has improved tire pressure sensor's test accuracy and reliability.
Further, the utility model discloses an adjustable power module of control signal control of controller exports adjustable voltage signal, makes adjustable voltage signal adjusts the transmitting power of signalling module to can adjust testing arrangement radio frequency signal's transmitting power in real time according to tire pressure sensor's applied scene, not only improve testing arrangement's applied scene, still further improve the accuracy and the reliability of test result.
Example two
Fig. 2 is a schematic circuit diagram of a signal sending module according to an embodiment of the present invention; as shown in fig. 2, the signal transmitting module 120 includes:
a trigger unit 121, a first transmitting unit 122, a second transmitting unit 123, a short-distance control unit 124, and a long-distance control unit 125;
the input end of the trigger unit 121 is connected to the controller 110, and the output end of the trigger unit 121 is respectively connected to the input end of the first transmitting unit 122 and the input end of the second transmitting unit 123, and is configured to receive a trigger signal sent by the controller 110; the input end of the short-distance control unit 124 is connected to the controller 110, the power end of the short-distance control unit 124 is connected to the output end of the adjustable power module, and the output end of the short-distance control unit 124 is connected to the power end of the first transmitting unit 122, and is configured to control the first transmitting unit 122 to transmit a radio frequency signal to the tire pressure sensor 200 in a short distance according to a short-distance trigger instruction of the controller 110; the input end of the remote control unit 125 is connected to the controller 110, the power supply end of the remote control unit 125 is connected to the output end of the adjustable power supply module, and the output end of the remote control unit 125 is connected to the power supply end of the second transmitting unit 123, and is configured to control the second transmitting unit 123 to remotely transmit a radio frequency signal to the tire pressure sensor 200 according to a remote triggering instruction of the controller 110; the output end of the first transmitting unit 122 and the output end of the second transmitting unit 123 are wirelessly connected to the tire pressure sensor 200, respectively.
In this embodiment, the triggering unit 121 includes: the circuit comprises a first resistor R1, a second resistor R2 and a first triode Q1; the base of the first transistor Q1 is connected to the enable terminal of the controller 110 through the first resistor R1, the emitter of the first transistor Q1 is connected to the trigger terminal of the controller 110, the collector of the first transistor Q1 is connected to the ground through the second resistor R2, and the collector of the first transistor Q1 is further connected to the input terminal of the first transmitting unit 122 and the input terminal of the second transmitting unit 123, respectively.
In this embodiment, the short-distance control unit 124 or the long-distance control unit 125 includes: a third resistor R3, a fourth resistor R4, a second triode Q2, a fifth resistor R5 and a third triode Q3; the base of the second transistor Q2 is connected to the controller 110 through the third resistor R3, the emitter of the second transistor Q2 is grounded, and the emitter of the second transistor Q2 is further connected to the collector of the second transistor Q2 through the fourth resistor R4; a base of the third transistor Q3 is connected to a collector of the second transistor Q2 through the fifth resistor R5, an emitter of the third transistor Q3 is connected to an output terminal of the adjustable power supply module, and a collector of the third transistor Q3 is connected to a power supply terminal of the first transmitting unit 122 or the second transmitting unit 123.
In this embodiment, the short-distance control unit 124 or the long-distance control unit 125 further includes: sixth and seventh resistors R7; the collector of the second triode Q2 is also connected with the output end of the adjustable power supply module through the sixth resistor; the collector of the third transistor Q3 is also connected to ground through the seventh resistor R7.
In this embodiment, the first transmitting unit 122 or the second transmitting unit 123 includes: the MOS tube switch chip U1, a first capacitor C1, a first inductor L1 and an eighth resistor R8; the input end of the MOS switch chip U1 is connected to the output end of the trigger unit 121, the power supply end of the MOS switch chip U1 is connected to the output end of the short-distance control unit 124 or the long-distance control unit 125, the output end of the MOS switch chip U1 is connected to the first end of the first inductor L1 through the first capacitor C1, and the second end of the first inductor L1 is grounded through the eighth resistor R8.
It should be noted that the operation principle of the signal sending module 120 in this embodiment is as follows: when the tire pressure sensor 200 needs to be tested in a short distance, the controller 110 outputs a high level to the short distance control unit 124, so that the second transistor Q2 and the third transistor Q3 in the short distance control unit 124 are both turned on, and thus the voltage signal output by the adjustable power supply module provides electric energy for the MOS transistor switch chip U1 in the first transmitting unit 122, and therefore the first transmitting unit 122 transmits a radio frequency signal to the tire pressure sensor 200 in a short distance, so that the short distance test to the tire pressure sensor 200 is not implemented, and the signal interference of other sensors in a long distance is also prevented.
Further, when the tire pressure sensor 200 needs to be tested remotely, the controller 110 outputs a high level to the remote control unit 125, so that the second transistor Q2 and the third transistor Q3 in the remote control unit 125 are both turned on, and the voltage signal output by the adjustable power supply module provides electric energy for the MOS transistor switch chip U1 in the second transmitting unit 123, so that the second transmitting unit 123 transmits a radio frequency signal to the tire pressure sensor 200 remotely, thereby not implementing remote testing of the tire pressure sensor 200, and also preventing signal interference of other sensors in a short distance.
It should be noted that the tuning circuit composed of the first capacitor C1, the first inductor L1 and the eighth resistor R8 is used to transmit radio frequency signals to the tire pressure sensor 200, and the arrangement positions of the tuning circuits in the two transmitting units are different, and can be adaptively adjusted according to the short-distance range and the long-distance range in the tire pressure sensor 200. Wherein, the MOS tube switch chip U1 comprises a TC4422 chip.
EXAMPLE III
Fig. 3 is a schematic circuit diagram of an adjustable power module according to an embodiment of the present invention; as shown in fig. 3, in the present embodiment, the adjustable power module 150 includes:
the switching voltage regulator U2, the second inductor L2 and the filter circuit 151;
the input end of the switching voltage regulator U2 is connected to a power supply, the control end of the switching voltage regulator U2 is connected to the controller, the output end of the switching voltage regulator U2 is connected to the first end of the second inductor L2, and the second end of the second inductor L2 is grounded through the filter circuit 151; the second end of the second inductor L2 is the output end of the adjustable power module.
In this embodiment, the filter circuit 151 includes: a second capacitor C2, a third capacitor C3, a ninth resistor R9 and a tenth resistor R10; a first end of the second capacitor C2 and a first end of the ninth resistor R9 are respectively connected to a second end of the second inductor L2, a second end of the second capacitor C2 and a second end of the ninth resistor R9 are respectively connected to a first end of the third capacitor C3 and a first end of the tenth resistor R10, and a second end of the third capacitor C3 and a second end of the tenth resistor R10 are grounded.
In this embodiment, the switching voltage regulator U2 includes a LM2596R chip.
It should be noted that, the pin 4 of the switching voltage regulator U2 is connected to the controller, and is configured to receive a reference voltage output by the controller, so that the output voltage of the switching voltage regulator U2 changes with the change of the reference voltage, and output a current voltage signal to the short-distance control unit or the long-distance control unit through the second inductor L2, thereby controlling the transmission power of the first transmission unit or the second transmission unit.
In another embodiment of the present invention, the signal receiving module includes: the device comprises a receiving antenna, a filter circuit and a radio frequency receiving chip; the receiving antenna is used for receiving feedback data sent by the tire pressure sensor; the input end of the radio frequency receiving chip is connected with the receiving antenna through the filter circuit, and the output end of the radio frequency receiving chip is connected with the controller and used for sending the feedback data to the controller.
It should be noted that, the utility model provides a testing arrangement of tire pressure sensor is used for triggering of tire pressure sensor to measure, realizes tire pressure sensor's effective activation test, and its main function includes: (1) a 125K trigger signal is sent to the tire pressure sensor through a signal sending module, and the sensor is subjected to short-distance or/and long-distance low-frequency triggering; (2) receiving feedback data of the tire pressure sensor through a 433.92MHZ antenna in the signal receiving module; (3) CAN communication is realized through the communication interface module, and sensor feedback data is sent to the main control board.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A tire pressure sensor testing device, the device comprising:
the device comprises a controller, a signal sending module, a signal receiving module, a communication interface module and an adjustable power supply module;
the input end of the signal sending module is connected with the controller, and the output end of the signal sending module is in wireless connection with the tire pressure sensor when in use and is used for sending radio frequency signals to the tire pressure sensor in a short distance or a long distance according to the trigger signals of the controller so that the radio frequency signals can perform low-frequency trigger on the tire pressure sensor;
the input end of the signal receiving module is wirelessly connected with the tire pressure sensor when in use, and the output end of the signal receiving module is connected with the controller and used for receiving feedback data sent by the tire pressure sensor and sending the feedback data to the controller;
the communication interface module is connected with the controller, and is also connected with a main control board when in use, so that the controller is in communication connection with the main control board, and the controller is also used for sending the feedback data to the main control board;
the control end of the adjustable power supply module is connected with the controller, and the output end of the adjustable power supply module is connected with the signal sending module and used for outputting an adjustable voltage signal according to the control signal output by the controller, so that the adjustable voltage signal can adjust the transmitting power of the signal sending module.
2. The tire pressure sensor testing device according to claim 1, wherein the signal transmission module includes:
the device comprises a trigger unit, a first transmitting unit, a second transmitting unit, a short-distance control unit and a long-distance control unit;
the input end of the trigger unit is connected with the controller, and the output end of the trigger unit is respectively connected with the input end of the first transmitting unit and the input end of the second transmitting unit and used for receiving a trigger signal sent by the controller;
the input end of the close-range control unit is connected with the controller, the power supply end of the close-range control unit is connected with the output end of the adjustable power supply module, and the output end of the close-range control unit is connected with the power supply end of the first transmitting unit and used for controlling the first transmitting unit to transmit radio-frequency signals to the tire pressure sensor in a close range according to a close-range trigger instruction of the controller;
the input end of the remote control unit is connected with the controller, the power supply end of the remote control unit is connected with the output end of the adjustable power supply module, and the output end of the remote control unit is connected with the power supply end of the second transmitting unit and used for controlling the second transmitting unit to remotely transmit radio-frequency signals to the tire pressure sensor according to a remote triggering instruction of the controller;
the output end of the first transmitting unit and the output end of the second transmitting unit are respectively in wireless connection with the tire pressure sensor.
3. The tire pressure sensor testing device of claim 2, wherein the triggering unit includes:
the circuit comprises a first resistor, a second resistor and a first triode;
the base electrode of the first triode is connected with the enabling end of the controller through the first resistor, the emitting electrode of the first triode is connected with the triggering end of the controller, the collecting electrode of the first triode is grounded through the second resistor, and the collecting electrode of the first triode is further connected with the input end of the first emission unit and the input end of the second emission unit respectively.
4. The tire pressure sensor testing device of claim 2, wherein the short-distance control unit or the long-distance control unit includes:
the first resistor, the second resistor, the third resistor, the fourth resistor, the third triode and the fourth resistor are connected in series;
the base electrode of the second triode is connected with the controller through the third resistor, the emitting electrode of the second triode is grounded, and the emitting electrode of the second triode is also connected with the collector electrode of the second triode through the fourth resistor;
the base electrode of the third triode is connected with the collector electrode of the second triode through the fifth resistor, the emitting electrode of the third triode is connected with the output end of the adjustable power supply module, and the collector electrode of the third triode is connected with the power supply end of the first emitting unit or the second emitting unit.
5. The tire pressure sensor testing device of claim 4, wherein the short-distance control unit or the long-distance control unit further comprises:
a sixth resistor and a seventh resistor;
the collector of the second triode is also connected with the output end of the adjustable power supply module through the sixth resistor;
and the collector of the third triode is also grounded through the seventh resistor.
6. The tire pressure sensor testing device of claim 2, wherein the first transmitting unit or the second transmitting unit includes:
the MOS tube switch chip, the first capacitor, the first inductor and the eighth resistor;
the input end of the MOS tube switch chip is connected with the output end of the trigger unit, the power end of the MOS tube switch chip is connected with the output end of the close-range control unit or the output end of the remote control unit, the output end of the MOS tube switch chip is connected with the first end of the first inductor through the first capacitor, and the second end of the first inductor is grounded through the eighth resistor.
7. The tire pressure sensor testing apparatus of claim 1, wherein the signal receiving module comprises:
the device comprises a receiving antenna, a filter circuit and a radio frequency receiving chip;
the receiving antenna is used for receiving feedback data sent by the tire pressure sensor;
the input end of the radio frequency receiving chip is connected with the receiving antenna through the filter circuit, and the output end of the radio frequency receiving chip is connected with the controller and used for sending the feedback data to the controller.
8. The tire pressure sensor testing apparatus of claim 1, wherein the adjustable power supply module includes:
the switching voltage regulator, the second inductor and the filter circuit;
the input end of the switching voltage regulator is connected with a power supply, the control end of the switching voltage regulator is connected with the controller, the output end of the switching voltage regulator is connected with the first end of the second inductor, and the second end of the second inductor is grounded through the filter circuit; and the second end of the second inductor is the output end of the adjustable power supply module.
9. The tire pressure sensor testing device according to claim 8, wherein the filter circuit includes:
the second capacitor, the third capacitor, the ninth resistor and the tenth resistor;
the first end of the second capacitor and the first end of the ninth resistor are respectively connected with the second end of the second inductor, the second end of the second capacitor and the second end of the ninth resistor are respectively connected with the first end of the third capacitor and the first end of the tenth resistor, and the second end of the third capacitor and the second end of the tenth resistor are grounded.
10. The tire pressure sensor testing device of claim 8 or 9, wherein the switching voltage regulator includes an LM2596R chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220900400.8U CN217084064U (en) | 2022-04-18 | 2022-04-18 | Testing device of tire pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220900400.8U CN217084064U (en) | 2022-04-18 | 2022-04-18 | Testing device of tire pressure sensor |
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| Publication Number | Publication Date |
|---|---|
| CN217084064U true CN217084064U (en) | 2022-07-29 |
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| CN202220900400.8U Active CN217084064U (en) | 2022-04-18 | 2022-04-18 | Testing device of tire pressure sensor |
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