JP2603220Y2 - Security alarm - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security alarm device which activates an alarm device such as a light emitting means or a sound generating means by detecting a human body entering a security area.

[0002]

2. Description of the Related Art Among security alarm systems that are currently in practical use, there is a so-called security lamp that combines a human body detector and a lighting device. Since this automatically detects the presence of a person and turns on the illumination lamp, it is also used as an energy-saving illumination lamp. This security light turns on the illuminating light for a preset time after detecting the human body.However, this alone has a small threatening effect, so the blinking operation is performed for a preset time after the human body is detected. There was something to make. Furthermore, a device that enables selection of a continuous lighting operation and a blinking operation by switching a switch or the like has been put to practical use.

[0003]

[Problem to be solved by the invention] However, the blinking operation alone lacks the psychological shock given to an intruder,
Further, only this kind of device that has been put to practical use has a function of selecting and using either one of continuous lighting and blinking operation, so that the effect is intimidating.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. An arbitrary combination is obtained by providing a means for outputting a continuous lighting and blinking operation together and setting an operation time of each of them. It is like that.

[0005]

According to the invention, the output mode of the alarm means is set to 2
Because of the types, the threat effect can be increased.
Since the time of each mode can be arbitrarily set, the application range is widened.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. FIG. 1 is a block diagram of an embodiment according to the present invention, in which a passive infrared detection system is used for a human body detection unit, and an operation mode is configured by lighting (continuous lighting) and blinking;
Each of these durations can be changed by adjustment by time setting means. FIG. 2 is an operation chart of a main part of FIG. FIG. 3 is a chart showing an operation when the human body detecting section repeatedly detects a human.

The infrared rays emitted from the alert area are collected by the optical system 1 and incident on the infrared detecting element 2.
Since the infrared detection element 2 is of a differential type in which an output is made only when the amount of incident infrared light changes, a case where no human enters the guard area, or a person enters the guard area and keeps standing still In this case, the infrared detecting element 2 does not output. The amount of infrared rays fluctuates when a human body enters the caution area, and a signal is transmitted from the infrared detecting element 2 to the amplifier circuit 3 according to the amount of fluctuation. Amplifying circuit 3 amplifies the signal and transmits the amplified signal to level determining circuit 4, and when this level exceeds a threshold value set by level determining circuit 4, outputs a trigger signal to first timer circuit 5.

When the first timer circuit 5 receives the trigger signal, the first timer circuit 5 sets the time t set by the first time setting means 6.
1 and transmitted to the lighting circuit 11 and the timer time end detection circuit 7. The lighting circuit 11 outputs the same signal as the input and transmits it to the OR circuit 12. The timer time end detection circuit 7 outputs a trigger signal to the second timer circuit 8 at the same time when the output of the first timer circuit 5 ends. The second timer circuit 8 having received the trigger signal outputs for the time t2 set by the second time setting means 9, and outputs the blinking circuit 10
Communicate to

The blinking circuit 10 outputs a blinking signal to O during this time t2.
The signal is transmitted to the R circuit 12. Therefore, the output of the OR circuit 12 is t
The signal becomes a continuous signal during 1 and thereafter becomes a blinking signal during t2, and this signal causes the lamp 14 to operate through the lamp drive circuit 13. If only the lighting (continuous) mode is desired, it is possible to set t2 to 0 and to set only t1. Conversely, if only the blinking mode is desired, it is possible to set t1 to 0 and t2 only. The first time setting means 6 and the second time setting means 9 are provided with an adjusting section using a variable resistor or the like. By changing the resistance value of the variable resistor, a predetermined timer time is set. Is determined.

FIG. 2A shows a detection signal from the level determination circuit 4 when a person enters the alert area, which is input to the first timer circuit 5. B is a first signal output from the first timer circuit 5 in response to the input of the detection signal.
The output signal of the time t1 set by the time setting means 6 is input to the lighting circuit 11 and also to the timer time setting end detection circuit 7. C is an output signal from the timer time end detection circuit 7, which detects that the input from the first timer circuit 5 has ended, and is input to the second timer circuit 8. D is an output signal of the time t2 set by the second time setting means 9 output from the second timer circuit 8 in response to the input from the timer time end detection circuit 7, and is input to the blinking circuit 10. . E
Is the output of the blinking circuit 10 and the second timer circuit 8
A flashing signal is issued while the input from the
Is input to B ′ is a lighting signal from the lighting circuit 11 due to the input of the output signal at the time t1 output from the first timer circuit 5. F is an output signal from the OR circuit 12, receives and outputs output signals from the lighting circuit 11 and the blinking circuit 10, and is input to the lamp driving circuit 13.

FIG. 3 is for making it easy to understand the movement when the human body detection is repeated. G in FIG. 3 is the same detection signal from the level determination circuit 4 as A in FIG. 2, and H is the same output signal from the OR circuit 12 as F in FIG. As shown in FIG. 3, when the time t1 and the time t2 are set to appropriate lengths, the lighting (continuous) mode is set while the human body is detected, and the blinking mode is set after the detection of the human body. As described above, according to the present invention, a greater threatening effect can be obtained than a threat that only blinks for a certain period of time after detection. Furthermore, if the blinking circuit 10 and the lighting circuit 11 are exchanged, it is possible to operate in the blinking mode first, and then operate in the lighting mode.

The above is an embodiment comprising an intruder detecting means constituted by an infrared detecting element, an amplifying circuit and a level judging circuit, two timer circuits capable of arbitrarily setting a time, a lighting circuit, a blinking circuit and the like. However, the same operation is performed even if an intruder detecting means of another principle is adopted. Also, in the above embodiment, an alarm sound generating circuit instead of the lighting circuit 11, an alarm interrupting circuit instead of the blinking circuit 10, an alarm siren driving circuit instead of the lamp driving circuit 13, and an alarm instead of the illuminating lamp 14. By using a siren, it can also be applied as a security alarm device that issues an alarm by sound. An embodiment combining two modes has been described above. However, it is also possible to combine three or more modes. If a switch is used instead of a variable resistor, the operation modes can be combined with or without the mode. Becomes

[0013]

According to the present invention, as described above, the operation mode of the alarm function of the security alarm device can be set arbitrarily. In the case of the above-described embodiment, since the flashing operation is performed after the lighting (continuous) operation, when used together with the security camera, the first lighting (continuous) can be used as illumination for the security camera. It can be used for intimidation by blinking action. As described above, the intimidating effect is more effective than the effect of merely blinking. Further, when used as an illumination lamp, a blinking operation is performed after lighting, so that it functions as a light-off notification, which is convenient.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is an operation chart of a main part of FIG. 1;

FIG. 3 is an operation chart when the human body detection unit repeats detection of a human.

[Explanation of symbols]

 1. Optical system 2. Infrared detector 3. Amplifier circuit 4. Level determination circuit 5. First timer circuit 6. First time setting means 7. Timer time end detection circuit 8. Second timer circuit Second time setting means 10. Blinking circuit 11. Lighting circuit 12. OR circuit 13. Lamp drive circuit 14. Lighting

Claims (3)

(57) [Scope of request for utility model registration] 1. An intruder detecting means, a first timer circuit that operates when a detection signal is output from the detecting means, and an adjustment for determining an operating time t1 (t1 ≧ 0) of the first timer circuit. A first time setting means having a section, a second timer circuit which operates after the operation of the first timer circuit is stopped, and an operation time t2 (t2
.Gtoreq.0), a second time setting means having an adjusting section for determining the first timer circuit, the first control means operating in synchronization with the first timer circuit, and the second time setting means operating in synchronization with the second timer. A security alarm device comprising alarm means controlled by both control means and a second control means. 2. The lighting device according to claim 1, wherein the first control means continuously turns on the illumination light, the second control means periodically changes the brightness of the illumination light, and the alarm means includes an illumination light. The security alarm device according to claim 1, which is a light. 3. The alarm device according to claim 1, wherein the first control means continuously generates an alarm sound, and the second control means periodically changes the loudness of the alarm sound. The security alarm device according to claim 1, wherein is a warning sound generator.