| 摘要 |
First and second transparent electrostatic electrodes (20, 22) are used on a transparent door (10), and are connected to an exciter/receiver unit (30) by conductors (24, 26). These electrodes are respectively used as an exciter antenna plate and an electrostatic reader antenna plate by the exciter/receiver unit (30). A suitable computer security system, using the exciter/receiver unit (30) to provide identifying information of tags as they are read at the exit, can identify items which have not been properly purchased or rented, and could trigger an alarm or block opening of the door. This same principle can likewise be applied to security areas which restrict passage of personnel. A similar arrangement can be provided for use on a transparent windshield or other transparent window of a vehicle, in this case in conjunction with an electrostatic radio frequency identification device which stores vehicle identifying information and transmits it when activated by an exciter/receiver unit (30). This permits automated assembly operations, or automated recording of assembly operations, as the vehicle moves along an assembly line, since its vehicle identifying information is thereby automatically readable. Also, such electrodes can be used on containers for medical use, such as for blood samples which are to be tested, or for testing or inventory of vials of chemicals. |
