CN213714621U

CN213714621U - Function test equipment of tire pressure monitoring sensor

Info

Publication number: CN213714621U
Application number: CN202023053756.2U
Authority: CN
Inventors: 耿名见; 巩振华; 朱鹏
Original assignee: Tianjin Senpujie Electronics Co ltd
Current assignee: Tianjin Senpujie Electronics Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-16
Anticipated expiration: 2030-12-17

Abstract

The utility model provides a function test device of a tire pressure monitoring sensor, which comprises a first shielding box, a second shielding box and a testing device, wherein the first shielding box is provided with a first signal interface and a first interface, and a low-frequency trigger and a testing area are arranged in the first shielding box; the second shielding box is provided with a second signal interface and a second interface, and a tire pressure controller is arranged in the second shielding box; one end of the monitoring control end is communicated with the first interface to send a trigger instruction to the low-frequency trigger, and the other end of the monitoring control end is communicated with the second interface to receive a signal of the tire pressure controller; and the signal attenuators are arranged between the first signal interface and the second signal interface and are respectively communicated through coaxial signal lines.

Description

Function test equipment of tire pressure monitoring sensor

Technical Field

Embodiments of the present invention generally relate to sensor monitoring equipment technology field, and more particularly, to a functional test equipment of a tire pressure monitoring sensor.

Background

When the tire pressure monitoring sensor is produced, the function verification is carried out on a semi-finished product, the sensor with abnormal function is prevented from flowing into the next production link, the qualification rate of products can be effectively improved, and the existing detection product is high in cost, easy to interfere, complex in operation, low in speed and low in efficiency.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, the utility model provides a functional test equipment of tire pressure monitoring sensor.

The utility model discloses the technical scheme of implementation is: a functional test device of a tire pressure monitoring sensor comprises a first shielding box, a second shielding box and a testing device, wherein the first shielding box is provided with a first signal interface and a first interface, and a low-frequency trigger and a testing area are arranged in the first shielding box;

the second shielding box is provided with a second signal interface and a second interface, and a tire pressure controller is arranged in the second shielding box;

one end of the monitoring control end is communicated with the first interface to send a trigger instruction to the low-frequency trigger, and the other end of the monitoring control end is communicated with the second interface to receive a signal of the tire pressure controller;

and the signal attenuators are arranged between the first signal interface and the second signal interface and are respectively communicated through coaxial signal lines.

Furthermore, the inner walls of the first shielding box and the second shielding box are bonded with pyramid-shaped wave-absorbing shielding materials.

Further, the first shielding box is a switch type shielding box, and a product to be tested is placed in the test area by opening the first shielding box; the second shielding box is a hermetic shielding box.

Furthermore, the monitoring control end is monitoring software of a computer upper computer.

Furthermore, the monitoring control end is connected with the first signal interface by sending a trigger instruction to the low-frequency trigger through a USB serial port line in a serial port communication mode.

Furthermore, the second interface is provided with four wires, one is a power supply anode, the other is a power supply cathode, the rest two wires are CANH and CANL connected with the CAN card, and the signal of the tire pressure controller is sent to the computer upper computer monitoring software through the CAN card.

The embodiment of the utility model provides an among the functional test equipment of a tire pressure monitoring sensor, following technological effect has been realized: the first shielding box and the second shielding box adopt metal closed shielding boxes, wave-absorbing materials are paved on the inner walls of the first shielding box and the second shielding box, so that the sensor signal of the station can be effectively prevented from radiating to other stations, and the signals of other stations can be prevented from interfering with the station; the signal transmission between the first shielding box and the second shielding box adopts a coaxial signal line and a signal attenuator, so that the signal intensity received by the second shielding box from the first shielding box is more accurate; the second shielding case is a closed shielding case, and mainly prevents that the tire pressure controller from being influenced by other factors (direction, position, etc. change), can lead to measuring inaccurately, adopts two shielding cases simultaneously, also can guarantee that the tire pressure controller is not influenced.

It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

fig. 1 is a functional test apparatus of a tire pressure monitoring sensor;

fig. 2 is a schematic view of the inside of a first shield box of a functional test device of a tire pressure monitoring sensor.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 2 is:

10. the system comprises a first shielding box 11, a low-frequency trigger 12, a first signal interface 13, a first interface 14, a test area 20, a second shielding box 21, a tire pressure controller 22, a second signal interface 23, a second interface 30, a signal attenuator 40 and a monitoring control terminal.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The following describes a function test device of a tire pressure monitoring sensor provided by an embodiment of the present invention with reference to fig. 1 to 2, including: the device comprises a first shielding box 10, a second shielding box and a third shielding box, wherein the first shielding box 10 is provided with a first signal interface 12 and a first interface 13, and a low-frequency trigger 11 and a test area 14 are arranged in the first shielding box 10;

a second shielding box 20 provided with a second signal interface 22 and a second interface 23, the second shielding box 20 being internally provided with a tire pressure controller 21;

a monitoring control terminal 40, one end of which is connected and communicated with the first interface 13 to send a trigger instruction to the low frequency trigger 11, and the other end of which is connected and communicated with the second interface 23 to receive a signal of the tire pressure controller 21;

and the signal attenuator 30 is arranged between the first signal interface 12 and the second signal interface 22 and is respectively connected and communicated through coaxial signal lines, so that the signal intensity received by the first shielding box 10 by the second shielding box 20 is more accurate.

In some embodiments, as shown in fig. 2, pyramidal wave-absorbing shielding materials are bonded to inner walls of the first shielding box 10 and the second shielding box 20, which can effectively ensure that a sensor signal at the station does not radiate to other stations, and also ensure that signals at other stations do not interfere with the station. It should be noted that the shape of the wave-absorbing material is not limited to the pyramid shape, and the shielding effect is not limited to the laying of the wave-absorbing material, but also can be realized by using a shielding net, and the like.

In some embodiments, the first shielding cage 10 is a switch-type shielding cage, and the testing is initiated by opening the first shielding cage 10 to place the product to be tested in the test area and closing the lid of the first shielding cage 10. The second shielding box 20 is a closed shielding box, and mainly prevents the tire pressure controller 21 from being influenced by other factors (direction, position, etc.) and causing inaccurate measurement, and meanwhile, the two shielding boxes are adopted, so that the tire pressure controller is not influenced. It should be noted that the device uses two shielding boxes, but is not limited to two shielding boxes, and if the arrangement is proper, one shielding box may be also used.

In some embodiments, the monitoring control terminal 40 is a computer monitoring software.

In some embodiments, the connection between the monitoring control terminal 40 and the first signal interface 12 is to send a trigger instruction to the low-frequency trigger 11 through a USB serial port line in a serial port communication manner, where the low-frequency trigger 11 sends out a 125KHz carrier signal through an internal circuit to trigger a sensor, so that the sensor sends out a 433.92MHz high-frequency signal, where the signal includes information such as an ID, a temperature, and a pressure of the sensor; the high-frequency signal in the first shielding box 10 is transmitted out through the first signal interface 12, passes through the signal attenuator 30 through the coaxial signal line, and then is transmitted to the second signal interface 22 through the coaxial signal line, and is conducted into the second shielding box 20, and the signal is detected by the tire pressure controller 21, the tire pressure controller 21 processes the received signal, and the processed signal is transmitted to the upper computer monitoring software of the computer through the second interface 23, the upper computer monitoring software of the computer displays the ID value of the current sensor, the detected signal strength, the temperature, the pressure and other information, and the upper computer of the computer automatically judges whether the product is qualified or not and completes the test.

It should be noted that, when triggering the low frequency trigger 11, the triggering is not limited to using a computer host, but may also be automatically triggered by installing a switch after detecting that the cover is closed.

In some embodiments, the second interface 23 has four wires, one is a positive power supply electrode, the other is a negative power supply electrode, the remaining two are CANH and CANL connected to the CAN card, and the signal of the tire pressure controller 21 is sent to the monitoring software of the computer upper computer through the CAN card, which is a device dedicated to CAN communication.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A functional test device of a tire pressure monitoring sensor, comprising:

the first shielding box is provided with a first signal interface and a first interface, and a low-frequency trigger and a test area are arranged in the first shielding box;

2. The functional test equipment of the tire pressure monitoring sensor according to claim 1, wherein the pyramidal wave-absorbing shielding material is adhered to the inner walls of the first shielding box and the second shielding box.

3. The functional test equipment of a tire pressure monitoring sensor according to claim 2, wherein the first shielding box is a switch-type shielding box, and a product to be tested is placed in the test area by opening the first shielding box; the second shielding box is a hermetic shielding box.

4. The functional test equipment of the tire pressure monitoring sensor according to claim 1, wherein the monitoring control terminal is monitoring software of a computer upper computer.

5. The functional test equipment of the tire pressure monitoring sensor according to claim 4, wherein the monitoring control terminal is connected with the first signal interface by sending a trigger instruction to the low frequency trigger through a USB serial port line in a serial port communication manner.

6. The functional test equipment of the tire pressure monitoring sensor according to claim 5, wherein the second interface has four wires, one is a positive power supply and the other is a negative power supply, the remaining two are CANH and CANL connected to a CAN card, and the signals of the tire pressure controller are sent to the monitoring software of the computer through the CAN card.