System and method for detecting intelligent key

A smart key and detection system technology, which is applied in the field of electronic product quality detection, can solve the problems of inability to accurately detect the accuracy of LF signal magnetic field strength measurement, and achieve the effect of ensuring consistency

Active Publication Date: 2013-09-04
上海纳恩汽车技术股份有限公司
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Problems solved by technology

[0006] Aiming at the problem that the measurement accuracy of the LF signal magnetic field strength of mass-produced smart keys can

Method used

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  • System and method for detecting intelligent key
  • System and method for detecting intelligent key

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[0023] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the present invention will be further explained below in conjunction with specific drawings.

[0024] See figure 1 , Which shows the composition structure of the smart key 100, the smart key 100 generally includes a 3D low-frequency antenna 101, a 3D low-frequency receiving module 102, a power management module 103, a UHF transmitting module 104, a battery 105, a button 106, and a microcomputer 107. . Among them, the microcomputer 107 controls other modules during the control and processing of the entire smart key 100; the 3D low-frequency receiving module 102 measures the strength of the low-frequency magnetic field through the 3D low-frequency antenna 101, which has an X-axis antenna, a Y-axis antenna and a Z-axis antenna , Can measure the intensity of low-frequency magnetic field from three directions, effectively ensuring the accuracy...

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Abstract

The invention discloses a system and a method for detecting an intelligent key. The system is characterized in that constant magnetic fields are produced respectively by 3D Helmholtz coils; the intensity of the magnetic fields is measured by a 3D low-frequency (LF) receiving module in an intelligent key needing to be detected; and detection and calibration of intelligent key wireless measurement performances are finished according to the magnetic field intensity measured by the intelligent key needing to be detected. The system and the method can automatically and fast detect accuracy of LF signal magnetic field intensity detection carried out by the intelligent key, carry out detection of performances of an intelligent key wireless-communication module, battery power and the like, and guarantee consistency, reliability and stability of products to the maximum degree.

Description

Technical field [0001] The invention relates to a detection technology for the quality of electronic products, in particular to a detection technology for automobile smart keys. Background technique [0002] The continuous improvement of people's demand for vehicle comfort, safety and convenience has promoted the continuous development of cars in the direction of intelligence. The smart key system PEPS (Passive Entry Passive Start) integrates the safety, comfort and convenience functions of the car, and is one of the signs of the development of the car in the direction of intelligence. Nowadays, the PEPS system has gradually become the mainstream configuration of foreign high-end models, and it is also rapidly being applied to most popular models and new models. [0003] The smart key system uses radio frequency identification (RFID) technology, including smart keys (transponders) and vehicle base stations (readers). In order to achieve low-cost and low-power two-way communicatio...

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Application Information

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IPC IPC(8): G07C9/00
Inventor 周易
Owner 上海纳恩汽车技术股份有限公司
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