发明名称 |
DISPOSITIF DE SECURITE, NOTAMMENT DISPOSITIF OPTIQUE DE PROTECTION |
摘要 |
A protective system on a machine has a beam producing apparatus and a device to give an output signal in response to it. The impulse generator (0) works from the light emitter (D1) which lights a photo-electric device (D2) with impulsed beams. There is a discriminator (G1) at the photo-electric device output so that a signal is only produced when the photo-electric device is illuminated. There is also time delay (H) connected between the impulse generator and the discriminator. The impulse generator is a unijunction device connected by controlled rectifier (S) controlling the light emitter. There are monostables assisting in time delay and oscillating functions. |
申请公布号 |
BE830942(A1) |
申请公布日期 |
1975.11.03 |
申请号 |
BE19750157925 |
申请日期 |
1975.07.03 |
申请人 |
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发明人 |
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分类号 |
H04B10/00;F16P3/14;H01H35/00;H04B10/22 |
主分类号 |
H04B10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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