Object discriminating apparatus |
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| 申请号 | JP23355182 | 申请日 | 1982-12-28 | 公开(公告)号 | JPS59122980A | 公开(公告)日 | 1984-07-16 |
| 申请人 | Toshiba Corp; | 发明人 | OOYAMA MITSUZUMI; | ||||
| 摘要 | PURPOSE:To output a positive response signal even if a received question signal level is low, by forming the response signal by treating a received and noise removed question signal with a means for receiving power supply corresponding to the level detection of said question signal. CONSTITUTION:The question signal from a question apparatus on the ground is received by an object response apparatus 2 and amplified by an amplifier 23 while the noise thereof is removed by BPF22. The level of this amplified signal is detected by a level detector 24 to control a switch circuit 25 and, only when the question signal passing the amplifier 23 is a predetermined level or more, power is supplied to a means which is constituted of frequency dividers 27-29, ROM11 and a switch 12 and generates a response code subjected to frequency deflecting modulation inherent to an object from a power source. Therefore, the generation of erroneous response caused by erroneous operation generated when the question signal is a low level is prevented and, even when the question signal level is low to a certain degree, the certain response signal is sent out to accurately perform the discrimination of the object. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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