JPH03125284U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1A is a schematic side view of the security sensor, Figure 1B
is a schematic front view thereof, FIG. 2A is a configuration diagram showing a group of horizontal contacts constituting a security sensor, FIGS. 2B and 2C are front views showing the contact and separation states of the group of horizontal contacts,
Figure 3A is a configuration diagram showing the vertical point group that makes up the security sensor, Figures 3B and 3C are front views showing the contact and separation states of the vertical point group, and Figure 4 is for security use. FIG. 3 is a block diagram showing the configuration of a sensor. 1...Sensor, 2...Sensor body, 3...Movable mounting plate, 4...Arm, 5...Reflector, 6...Pyroelectric element, 11...Horizontal contact group, 15...Vertical direct point Group 21...judgment signal output means, 22...abnormal signal output means, 24...reset means.

Claims (1)

[Claims for Utility Model Registration] 1. A sensor main body, a movable mounting plate for attaching the sensor main body to an installation surface, a pair of arms hanging down from the sensor main body, and a movably pivotally supported device between the arms. The device includes a reflecting mirror that collects infrared rays, and a pyroelectric element that receives the infrared rays collected by the reflecting mirror, and the infrared rays emitted from the human body are focused on the pyroelectric element by the reflecting mirror, and the infrared rays are collected by the reflecting mirror. In a security sensor that outputs an alarm signal based on a change in the level of infrared light received by an electronic element, a group of horizontal contacts provided between the movable mounting plate and the installation surface, and between the arm and the reflector. When the provided vertical point group, the movable mounting plate, and the reflecting mirror are moved, the number of times the horizontal contact group and the vertical point group are turned ON and OFF within a predetermined time is measured, and the number of times the horizontal contact group and the vertical contact group are turned ON and OFF for a predetermined number of times or more is determined. A judgment signal output signal that judges whether it is OFF and outputs a judgment signal if it has been turned ON or OFF for a predetermined number of times or more; and a security start signal output from the alarm device that inputs the judgment signal. A security sensing device comprising: abnormal signal output means that outputs a sensing area abnormal signal to the alarm device side when a judgment signal output from the output means is input; and reset means that resets the signal output of the judgment signal output means. vessel. 2. When the horizontal contact group is composed of a pair of movable contacts provided on the top surface of the movable mounting plate and a first group of conductive pieces arranged radially on the installation surface, and the movable mounting plate is moved. the movable contact and the first group of conductive pieces come into contact with each other and the movable contact is turned on;
In addition to forming an OFF state, the vertical point group is composed of a pair of fixed contacts provided near the short axis of the arm and a second group of conductive pieces arranged radially near the shaft bearing hole of the reflecting mirror. 2. The security sensor according to claim 1, wherein when the reflecting mirror is moved, the fixed contact and the second group of conductive pieces come into contact with each other and separate, so that the fixed contact turns on and off.