| 摘要 |
1. A vibration sensor for burglary detection, fitted with a mechanical and electric converter for the reception of the alarm signal, an amplifier, an integrating capacitor, a relay to be connected with a light or acoustic signal generator or for both signals simultaneously, characterised in that the output of the mechanical and electric converter (1) is connected with a matching system (2), the output of which is connected with the output of the first amplifier (3) and with the input of a monostable vibrator (10), whereas the output of the first amplifier (3) is connected with the input of a mixer (5) and with the input of the wobbulated signal generator (4), while the output of the mixer (5) is connected with the input of the second amplifier (6) and with the input of the alarm signal duration identification system (9), whereas the output of the second amplifier (6) is connected with the input of a limited current source (7), whereas the output of the power source (7), .<IMAGE>
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