JPH045796A - Human body detector for crime prevention - Google Patents

Abstract

PURPOSE:To improve the efficiency of operation tests by turning on a test indicating lamp until the lapse of prescribed time after the operating of a test switch an inhibiting the turning-on automatically after the lapse of the prescribed time. CONSTITUTION:The detecting area or the detecting sensitivity of a human body detecting sensor 101 can be ascertained easily because a detection indication is operated by a test indicating lamp 10a for the prescribed time when a cover 1b is attached and a power source voltage is energized after the wiring of a detector 1 is finished. The labor of attaching and detaching the detector cover 1b during the operation tests is reduced and the detection indication after the operation tests is prevented from being left inhibited because the detection indication is inhibited automatically after the lapse of the prescribed time. Moreover, it is possible to obtain a structure in which a test switch SW1 can be operated manually and also a human body detector for crime prevention in which the labor of the operation test is reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention aims to improve a human body detector for crime prevention.

[Prior art] Recently, human body detection sensors installed at entrances, windows, etc., send a detection signal to a separate security receiver to issue an alarm when a human body is detected, thereby preventing illegal attacks on residences, etc. Security human body detectors designed to prevent intrusions have been developed and are being used.

FIG. 6 shows a schematic configuration of such a crime prevention human body detector 100, which includes a human body detection sensor 101 such as a pyroelectric element that detects heat rays emitted from the human body, and a human body detection sensor 101 that detects heat rays emitted from the human body. A detection signal amplification unit 102 that amplifies the signal; and a signal processing unit that processes the detection signal of the detection signal amplification unit 102 and sends the detection signal to a separate security receiver (not shown) via a signal line β. l! g103.

By the way, when installing a crime prevention system using such a crime prevention human body detector 100, an operation test is usually conducted to confirm that the detection area and sensitivity of the human body detection sensor 101 are appropriate. , Since security receivers are generally installed in remote locations, the detector 100
It is difficult to confirm that it has worked. For this purpose, each detector 100 has a test indicator L100 and a test switch 5W100! ! B104 is provided,
When the human body detection sensor 101 detects a human body and outputs a detection signal while the test switch 5W100 is operated, the transistor Q100 of the test display section 104
The test indicator light L100 is turned on by conducting the test indicator light L100, thereby making it easy to confirm the operation of the detector 00.

FIGS. 7(a) and 7(b) show the shape of the shadow of such a crime prevention human body detector 100.
A cover 100b is removably attached to 0a, a test switch 5W100 is provided on the detector base 100a side covered by the cover 1OOb, and a test indicator L100 is provided on the outer periphery of the detector 100.

By the way, in such a detector 100, it is necessary to make the existence of the detector 100 as difficult to notice as possible after the operation test is completed. Therefore, conventionally, the test switch 5W
After operating the detector 100, attach the cover to the detector base 100b and perform an operation test, and for the detector 100 that has been tested, remove the cover again, release the operation of the test switch 5W100, and then attach the cover again. Improvements have been desired since it is often time-consuming.

FIG. 8 shows an example of a crime prevention system configured using a crime prevention human body detector 200, in which the detector 200 connects a pair of power lines j ! 1. A bridge diode BD which receives tR supplied via f2 without distinguishing the voltage polarity and keeps the voltage polarity constant; and a bridge diode F' BD.
a constant voltage power supply circuit 201 that stabilizes the power supply voltage received by the detector 200 at a voltage level required by the internal circuit of the detector 200;
The human body detection unit 202 has a human body detection sensor (not shown) and switches the voltage switching contact 202a from the normally closed contact side to the normally closed contact side when a human body is detected.

In addition, in order to prevent inconveniences such as intentional disconnection of the wiring when the cover is removed, a tamper-resistant device that opens when the cover (not shown) covering the detector 200 is removed is also provided.
A switch 2°3 is provided.

On the other hand, the security receiver 300 is used for monitoring! R# child D+ connected power line! A loop is formed with the detection line 13 connected to the first detection terminal DS through the detector 200, and a monitoring current is applied, and when a human body is detected on the detector 200 side, the collection voltage switching contact 202a is activated. When the tamper switch 203 is actuated to open the loop, a disconnection of the monitoring current is detected and an alarm is issued. Therefore, each detector 200 has a non-voltage switching contact 202a (normally closed contact side) and a tamper switch 2.
03 are connected in series in order to form line j! 4, and at the detector 200 at one end of this line 14, the voltage switching contact 2
02a to the detection line 13, while the tamper switch 203 is connected to the detector 200 at the other end of the line 14.
It is necessary to connect one end of the power supply line 11 to the power supply line 11.

However, since each detector 200 is provided with a bridge diode BD so that there is no need to distinguish between the polarity of the power supply lines ll and β2, it is necessary to trace the wiring to determine the tR line 11. However, it is necessary to use a tester to distinguish and confirm the polarity, which is time-consuming and requires improvement.

[Issue 8m to be solved by the invention The first invention proposed in view of the above circumstances allows the lighting operation of the test indicator light until a predetermined time has elapsed after the test switch is operated. The object of the present invention is to provide a crime prevention human body detector which reduces the effort of operation testing by automatically prohibiting the lighting operation after that, and prevents forgetting to operate the test switch.

In addition, the second invention is a crime prevention device that makes it easy to determine the polarity of the power line led out from the security receiver side, making wiring easier and improving workability even when the power terminal is a non-polar type. The purpose is to provide a human body detector.

[Means for Solving the Problem] A first invention (corresponding to claim 1) proposed to achieve the above object is a crime prevention human body equipped with a test indicator light for performing an operation test at the time of installation. The detector includes a test switch and a timer control circuit that allows the test indicator light to turn on until a predetermined time has elapsed after the test switch is operated, and then prohibits the lighting operation. It is said to be configured with a section.

The present invention according to claim 2 is configured to be operated in conjunction with the attachment of the test switch in the first invention or the cover covering the detector base.

A second invention (corresponding to claim 3) includes a non-polar power input terminal that receives power supply voltage from a separately placed security receiver and a detection signal output terminal that outputs a human body detection signal. In security human body detectors, polarity display switches and
a set of polarity indicator lights connected to the above-mentioned - polarity type power input terminal, and when the above-mentioned polarity indicator switch is operated, the polarity indicator lights are set according to the polarity of the power supply voltage supplied to the above-mentioned power input terminal. The configuration is such that one of the lights is turned on.

According to a fourth aspect of the present invention, the polarity display switch according to the second aspect of the present invention is operated in conjunction with opening and opening of the cover covering the detector base.

[Function] According to the present invention as set forth in claim 1, the lighting operation of the test indicator light is allowed until a predetermined time period elapses after the test switch of the timer control circuit section is operated. When a human body is detected by the human body detection sensor, the test indicator light turns on, but after a predetermined time has elapsed after the test switch is operated, the timer control circuit prohibits the test indicator light from turning on. Therefore, even if a human body is detected by the human body detection sensor, the test indicator light will not light up.

In the present invention as set forth in claim 2, when the cover is attached to the detector base, the test switch is operated and the same operation as in claim 1 is performed.

In the present invention as set forth in claim 3, when the polarity display switch of the polarity display section is operated with the pair of power lines led out from the security receiver connected, one of the polarity display lights of the set is
Only the polarity indicator light connected to either the positive or negative power supply line lights up to indicate the polarity, and when the operation of the polarity indicator switch is released, the polarity indicator light goes out.

Further, in the present invention as set forth in claim 4, when the cover of the detector base is removed, the polarity display switch is operated in conjunction to display the polarity of the power line, and when the cover is attached to the detector body, the polarity is displayed. The operation of the display switch is released and the polarity display stops.

[Example] The invention will now be described in detail with reference to the drawings.

FIG. 1 shows an example of the internal configuration of the security human body detector 1 of the first invention (corresponding to claim 1), and the same parts as the conventional configuration are given the same reference numerals and explained. Omitted.

In the figure, lO is the test indicator lamp 10a that receives the detection signal transmitted from the test indicator lamp 10a and the detection signal amplifier 102.
11 has a test switch SWI, and the test indicator light 10a is turned off until a predetermined time elapses after the test switch SW1 is operated. This is a timer control circuit section that allows the lighting operation and the transmission of the detection signal), and thereafter prohibits display on the test display section 1o (prohibits the transmission of the detection signal).

As shown in FIGS. 2(a) and 2(b), the test switch SWI is installed on a board (not shown) provided on the detector base 1a of the detector 1, and is connected to the base 1a of the detector 1. When the cover 1b is removed, the operation piece protrudes and the test switch SW1 is opened, and when the cover 1b is attached to the base 1a, the operation piece of the test switch SWI is pushed down by the tongue piece F provided on the cover 1b side. It is designed to be closed. (Corresponding to claim 2).

The test indicator light 10a is provided on the outer periphery of the base Ia, and is structured so that the display can be checked with the cover 1b attached.

Next, to explain the operation during the operation test, the detector l
When the wiring work is completed and the cover 1b is attached to the detector base 1a, the test switch SW1 is closed, and in this state, when the Kfg voltage is supplied from the security receiver (not shown) side, the capacitor of the timer control circuit section 11 C is the power supply voltage ■C
C is charged through the resistor R1, and the terminal voltage Vc increases. Then, during the period T during which the terminal voltage Vc of the capacitor C rises and reaches the voltage Va, the voltage across the resistor R3 is lower than about 0.6 volts, so the transistor Q2 is in the off state, so the detection signal is The detection signal output from the amplifier circuit 102 is directly transmitted to the test display unit 10 to drive the test indicator light 10a to turn on. However, when time T passes and the terminal voltage Vc of capacitor C reaches voltage Va, transistor Q2 turns on and diode DI
Since the detection signal output from the detection signal amplification section 102 is grounded through the test display section 10, transmission of the detection signal to the test display section 10 is blocked and display by the test indicator light 10a is prohibited.

In this way, the wiring work for the detector 1 is completed, and the cover 1
When the power supply voltage is applied after installing b, the test indicator light FOA can display a detection display for a predetermined period of time T, making it easy to confirm the detection area and detection sensitivity of human body detection sensor 01. Detection display is automatically prohibited after a predetermined time has elapsed, so
The effort required to attach and detach the detector cover 1b during an operation test is reduced, and the detection display is prevented from being disabled and forgotten after the operation test.

In the timer control circuit section 11, by attaching the cover 1b to the detector base 1a, the period T from when the test switch SWI is operated until the transistor Q2 is turned on is determined by the following equation.

Va=(VCCx(R2+R3)/(R1+R2+R3)) x (]-e(-T/(CXRχ)) However, Rx=(R1+R2+R3)/(RIX(R2+R3))Va =0
．． 6X (R2+R3) /R3 In addition, in the above embodiment, the test switch SWI is configured to close in conjunction with the attachment of the cover 1b (corresponding to claim 2), but the test switch is not limited to such a configuration. It is also possible to have a configuration in which the SWI is manually operated, and as in the case of the above embodiment, it is possible to provide a crime prevention human body detector that reduces the labor of operation testing.

FIG. 3 shows an example of the internal configuration of the second security human body detector 2 of the present invention, in which the conventional detector 200 has a polarity display switch 20c and polarity display lights 20a, 20b. It has a configuration in which a polarity display section 20 is added, and the same parts are denoted by the same reference numerals and the description thereof will be omitted.

The polarity indicator lights 20a and 20b use light emitting diodes, and the anode side of each is connected to the power supply terminals TI and T2 (connected to the power supply line), and the cathode side is connected to a bridge diode through a current limiting resistor R and a polarity indicator switch 20C. -F' B D is connected to the negative polarity side, and by operating the polarity display switch 20c, only the polarity indicator lamp 2°a or 20b of the power terminal TI or T2 to which the positive power line is connected is turned on. The non-voltage switching contact 20 of the human body detection unit 202 is illuminated.
2a is connected to the terminals Ta-Tc, and the tamper switch 203 is connected to the terminals Td and Te.
) and (b) are explanatory diagrams showing the shape of the detector 2. When the cover 2b is not attached to the detector base 2a, the operation piece of the polarity cover switch 20c protrudes and closes, and the cover is closed. When the cover 2b is attached, the operating piece is pushed down and opened by the tongue piece F provided on the cover 2b. (Corresponding to claim 4) 9 The detector 2 having such a configuration is a detector base 2a.
When the cover 2b is removed, the polarity display switch 20c is closed, so if the power line (not shown) derived from the security receiver (not shown) is connected to the power terminals TI and T2, the positive power line is The polarity indicator light 20a or 20b on the connected power terminal side lights up, making it possible to immediately determine the positive polarity.

FIG. 5 shows a configuration example of a crime prevention system using this crime prevention human body detector 2, in which the detector 200 in the conventional crime prevention system is replaced with the detector 2.
Identical parts are given the same reference numerals and explanations will be omitted.

This system uses t derived from the security receiver 300.
tl, line 1.1 and the detection line /S through the detectors 2, and for this purpose the ! of each detector 2 must be formed. between the terminal Tb of the voltage switching contact 202a and the terminal Td of the tamper switch 203, and the tamper
The terminal Te of the switch 203 and the terminal Ta of the non-voltage switching contact 202a of the other detector 2 are connected in series by a line 14, and the non-voltage switching contact 202a at one end of the line 14 is connected in series.
The detection line 13 is connected to the terminal Ta of the line i4, and the line 15 is connected to the terminal Te of the tamper switch 203 at the other end of the line i4, and the other end of this line 15 is connected to the positive power supply line ll. It is necessary to connect to terminal T1 or T2, but since the polarity display switch 20C is closed by removing the cover 2b, the power supply line 1
Since the polarity indicator light 20a corresponding to the 1st polarity is lit up and the positive side of the power source is immediately known, the line 15 can be connected to the terminal 2 without any errors, making it possible to improve workability.

In addition, in the above explanation, the polarity display switch 20c is
Although the configuration is such that forgetting to operate the polarity display switch 20c is prevented by interlocking the operation with the attachment of the polarity display switch 20c (corresponding to claim 4), the polarity display switch 20c is not limited to such a configuration; It is possible.

In addition, in the above explanation, the polarity indicator lamps 20a, 20b and the polarity indicator switch are connected to the terminals TI, T2 and the bridge diode-F.
'B As a configuration connected between the negative electrode side of D, the power line j! Polarity indicator light 20a connected to 1 (positive side)
Alternatively, the polarity indicator lamps 20a and 20b and the polarity indicator switch are connected to terminals TI and 20b.
Connect between T2 and the positive side of the bridge diode F'BD, and connect it to the power supply line! It is also possible to have a configuration in which the connected polarity indicator lamp 20a or 20b of No. 2 (negative electrode side) is turned on.

In the above description, it is assumed that the normally closed contact of the non-voltage switching contact 202a of the detector 2 is used and the tamper switch 203 is opened with the cover 2b removed. ! 3. Line f4゜15 and tR line f
The system is designed to issue an alarm when a loop formed by connecting 1 in series is interrupted, but the configuration is not limited to this; for example, a security receiver can issue an alarm when a detection loop is formed. If you use a device that sends an alarm, the ! of detector 2! ! ! The normally closed contact of the voltage switching contact 202a is used, and the tamper switch 203 is closed when the cover is removed.The non-voltage switching contact 202a of each detector 2 and the tamper switch 203 are all connected in parallel. It is also possible to connect one connected to the power supply line 11 and the detection line 13 to form a detection loop.

[Effects of the Invention] According to the present invention as set forth in claim 1, the lighting operation of the test indicator light is allowed until a predetermined time has elapsed after the test switch is operated, and after the predetermined time has elapsed, the lighting operation of the test indicator light is allowed. Since the lighting operation is automatically prohibited, there is no need to attach or remove the cover and operate the test switch during the test, and there is no need to forget to operate the test switch, thereby improving the efficiency of the operation test.

According to the present invention as set forth in claim 2, the test switches are operated in conjunction with each other by simply attaching the cover, so that in addition to the effect set forth in claim 1, the efficiency of the -layer operation test can be improved. can.

According to the present invention as set forth in claim 3, the polarity of the power line led out from the security receiver can be immediately determined by simply operating the polarity display switch and the polarity indicator light is turned on, thereby improving the workability of wiring for the security system. can be improved.

According to the present invention as set forth in claim 4, the polarity display switch is operated in conjunction with the cover simply by attaching the cover.
In addition to the effect of claim 3, the -layer workability can be improved.

[Brief explanation of the drawing]

Figure 1 shows claim 1. 2(a) and 2(b) are explanatory diagrams of the shape thereof, and FIG. 3 is a side view of the internal configuration of the detector of the present invention described in Claims 3 and 4. 4(a) and 4(b) are explanatory diagrams of its shape, Figure 5 is a side view of the configuration of a security system using the detector, and Figure 6 is a side view of the internal configuration of a conventional detector. Figure, Figure 7 (
a) and (b) are explanatory diagrams of its shape, and FIG. 8 is a configuration side entrance of a security system using a conventional detector. [Description of symbols] 1.2... Crime prevention human body detector lb, 2b... Cover 10... Test display section 10a... Test indicator light 11... Timer control circuit section 20a, 20b. ...Polarity indicator light 20c...Polarity display switch 101...Human body detection sensor 300...Security receiver Jl, j! 2...Power line 13...Detection line SWI...Test switch

Claims (4)

[Claims] (1) In a crime prevention human body detector equipped with a test indicator light for performing an operation test at the time of installation, the test switch and the above-mentioned A human body detector for crime prevention, comprising a timer control circuit section that allows the lighting operation of a test indicator light and then prohibits the lighting operation. (2) The human body detector for crime prevention according to claim 1, wherein the test switch is operated in conjunction with attachment of a cover covering the detector base. (3) In a crime prevention human body detector equipped with a non-polar power input terminal that receives power supply voltage from a separate security receiver side and a detection signal output terminal that outputs a human body detection signal, a polarity display is provided. a switch, and a set of polarity indicator lights connected to the non-polar power input terminal, and when the polarity indicator switch is operated, the polarity indicator light is set according to the polarity of the power supply voltage supplied to the power input terminal. A crime prevention human body detector characterized by having a configuration in which either one of the indicator lights is turned on. (4) The human body detector for crime prevention according to claim 3, wherein the polarity display switch is operated in conjunction only while a cover covering the detector base is being removed.