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An encrypted radio frequency decoding and pulsed led light test system

An optical testing and radio frequency technology, applied in the field of testing, can solve the problems of large size of testing equipment, occupying a lot of workshop area, inconvenient use, etc., and achieve the effect of convenient reading of data, improving use efficiency and improving integration.

Active Publication Date: 2022-03-25
深钛智能科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of testing is very expensive, and these devices are very large and occupy a large area of ​​the factory building. However, various testing devices on the market still have various problems
[0003] For example, the wireless test system and method disclosed by the authorized announcement number CN108872727A, although it has achieved a relatively comprehensive detection effect on the wireless performance of the car remote key, it does not solve the problem that the existing detection equipment is relatively large. , it is very inconvenient to use, and it cannot realize 433MHz RF signal decoding, the test of the LED light of the car key, cannot improve the centralized combination performance, and is easy to operate. For this reason, we propose an encrypted RF decoding and Pulse LED light test system

Method used

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  • An encrypted radio frequency decoding and pulsed led light test system
  • An encrypted radio frequency decoding and pulsed led light test system
  • An encrypted radio frequency decoding and pulsed led light test system

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Experimental program
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Embodiment 1

[0034] An encrypted radio frequency decoding and pulsed LED light test system, including a control module, the control module is electrically connected to a radio frequency decoding module and an LED light test module, the radio frequency decoding module is electrically connected to a receiving antenna, and the LED light test module is powered on The photoelectric conversion chip is connected to the photoelectric conversion chip, and the photoelectric conversion chip receives the LED light of the car key through the optical fiber. The control module is electrically connected to the RS485 interface, and the RS485 interface communication connection is connected to the host computer;

[0035] The decoding chip used in the radio frequency decoding module is TDA5235 chip, the photoelectric conversion chip uses photoelectric conversion chip TSL257, the control module uses STM32F302 single-chip microcomputer chip, and the program burning of the control module is connected and downloade...

Embodiment 2

[0047] Embodiment 2: The difference from Embodiment 1 is that the output mode of the baseband signal is different:

[0048] In order to improve the diversity of system use and improve the use efficiency of the system, in this embodiment, preferably, the general serial interface SPI reads out the data, and can also use the output signal of the RSSI interface of the TDA5235 chip to pass the hysteresis The comparator LM311D directly inputs the RSSI signal to the ADC conversion interface of the control module, and directly decodes the baseband signal through the ADC conversion interface of the control module, because the encoding method of the signal is ASK, which is Manchester encoding, which is known in advance. So it can be decoded by MCU itself.

[0049] refer to Figure 8-10 :

[0050] Figure 8 The demodulated RF message signal is actually tested with an oscilloscope. It can be seen that the signal is very clear, indicating that the system hardware design is correct and c...

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Abstract

The invention discloses an encrypted radio frequency decoding and pulsed LED light test system; it includes a control module, the control module is electrically connected with a radio frequency decoding module and an LED light test module, and the radio frequency decoding module is electrically connected with a receiver Antenna, the LED light test module is electrically connected with a photoelectric conversion chip, and the photoelectric conversion chip receives the LED light of the car key through an optical fiber. The control module is electrically connected with an RS485 interface, and the RS485 interface is connected with a Host computer; the present invention improves integration by integrating the radio frequency decoding module and the LED light test module into a single module; replaces the previous two modules of the spectrum analyzer and the smart camera by a single module; greatly reduces the cost , only 5% of the usual scheme, which greatly saves space, only 5% of the usual scheme.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to an encrypted radio frequency decoding and pulsed LED light testing system. Background technique [0002] PKE keyless entry system technology belongs to the field of automotive electronic system technology, and is a successful application of radio frequency identification system in the field of car access control. When the car is equipped with a PKE smart key system, the car door can be opened automatically as long as the car owner approaches the car or touches the door. The anti-theft host, and then the anti-theft host takes corresponding actions according to this instruction. This method is called active remote control, that is, the behavior of the anti-theft host depends on the instructions of the remote control. Therefore, if the anti-theft host fails to receive the signal from the remote control or receives an error signal, the host cannot handle it correctly. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R25/24G01R31/26G01R31/44
CPCB60R25/248G01R31/2635G01R31/44
Inventor 王丽国冯龙柴国占
Owner 深钛智能科技(苏州)有限公司