基于433 MHz无线通信与虹膜识别的矿用唯一性检卡装置

Mine uniqueness detection device based on 433 MHz wireless communication and iris recognition

煤矿井下人员出入井口应设置检测识别卡工作是否正常和唯一性检测的装置。利用基于掌纹与指纹、人脸图像、步态等生物特征的唯一性检测技术对本人携带本卡进行检测存在受环境影响识别精度不高的问题;现有矿用唯一性检卡装置受检测区域外识别卡干扰,对人员携带多张识别卡、携带错误识别卡、未携带识别卡的情况检测效果不理想。针对上述问题,设计了一种基于433 MHz无线通信与虹膜识别的矿用唯一性检卡装置。首先,通过调节定向天线的发射功率,实现检测区域范围实时配置;433 MHz无线通信模块通过定向天线向检测区域内识别卡配置检测区域标志符,读卡基站读取识别卡的电文数据,通过判断电文数据的检测区域标志符是否与配置的检测区域标志符相等,以排除区域外识别卡的干扰,对检测区域内识别卡数量进行检测,将检测结果写入中间数据库的结果表。然后,采集待检人员的虹膜信息,通过识别虹膜信息查询该人员的识别卡信息。最后,判断根据虹膜信息查询到的识别卡信息与中间数据库的结果表信息是否匹配,实现识别卡唯一性检测。测试结果表明,针对携带多张识别卡、携带错误识别卡、未携带识别卡与本人携带本卡的情况,该装置的检测准确率均为100%,且平均检测时间均不超过2 s。

The entrance of the underground personnel in coal mine should be equipped with a device to detect whether the identification card is working properly and uniquely.There are problems in the use of uniqueness detection technology based on palm prints and fingerprints,facial images,gait and other biological characteristics to detect the person carrying this card.The recognition accuracy is low due to the impact of the environment.The existing mine uniqueness detection device is interfered by the identification card outside the detection area,and the detection effect is not ideal when the person carries multiple identification card,carries wrong identification card,and does not carry the identification card.In order to solve the above problems,a mine uniqueness detection device based on 433 MHz wireless communication and iris recognition is designed.Firstly,by adjusting the transmission power of the directional antenna,real-time configuration of the detection area is realized.The 433 MHz wireless communication module configures the detection area identifier to the identification cards in the detection area through the directional antenna.The card reader base station reads the message data of the identification cards,and detects whether the detection area identifier of the message data is equal to the configured detection area identifier.In order to eliminate the interference of identification cards outside the area,the number of identification cards in the detection area is detected,and the detection results are written into the result table of the intermediate database.Secondly,the iris information of the personnel to be inspected is collected,and the identification card information of the personnel is queried by identifying the iris information.Finally,by judging whether the identification card information queried according to the iris information matches with the result table information of the intermediate database,the uniqueness detection of the identification card is realized.The test results show that the detection accuracy of the device is 100%for the cases of carrying multiple identification cards,carrying wrong identification cards,not carrying identification cards and carrying right identification cards.The average detection time does not exceed 2 s.