KR20020064492A - Invasion alarm equipment - Google Patents

Abstract

PURPOSE: Provided is an infiltration alarm device which is configured to alarm against infiltration with external structure like gas pipe or so on used so that it is widely used to protect infiltration through external structure. CONSTITUTION: The infiltration alarm device is characterized by comprising the parts of: a first tool which is adhered to an external structure and configures on a center of a weight sensor such as a strain gauge(1) to detect force added to the external structure in infiltration; a second tool which configures as an electric circuit(2) to treat the detected signal by the first tool and judge the presence of the infiltration; and a third tool which informs the presence of infiltration judged through the second tool by wanted alarm method.

Description

Intrusion alarm device {Invasion alarm equipment}

The present invention relates to the configuration of an alarm device for intrusion using an external structure, such as a gas pipe installed on the outer wall of the building, such as apartments, cost less, simpler and more efficient operation than other methods, such as recently occurring building outer wall of the apartment It is expected to be widely used to alarm and shut off intrusions using external structures such as gas pipes installed in the building.

The use of a force sensor, such as a strain gauge that attaches to an external structure and senses the force that is added to the external structure when an intruder occurs, is the heart of the present invention.

1 is a schematic diagram of an intrusion alarm apparatus according to the present invention;

2 is a brief explanatory diagram of a sensor signal processing unit;

3 is an explanatory diagram of an alarm output unit;

* Explanation of symbols for the main parts of the drawings

1: Sensor part (S: strain gauge) 2: Sensor signal processing part

21: Hixton bridge 22: Sensor signal processing electronic circuit

25 signal amplifier 26 comparator (signal comparator)

27: External reference voltage

3: alarm output unit 31: output signal of the sensor signal processing unit

32: alarm output interface 33: alarm output device

35: signal level detector 36: alarm output interface

In the configuration of the alarm device for intrusion using the external structure installed on the building exterior wall according to the present invention in order to achieve the above object, such as a strain gauge for attaching to the external structure to sense the force added to the external structure when the intrusion occurs First means for the sensor unit configured around the force sensor; A second means of a sensor signal processing unit configured of a sensor signal processing electronic circuit which processes the signal sensed by the first means and determines whether an intrusion is detected; And a third means of an alarm output unit for notifying the intrusion fact determined using the second means by the selected alarm method.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Fig. 1 shows a schematic diagram of the configuration of the alarm device according to the present invention, which is largely comprised of a sensor unit 1, a sensor signal processing unit 2, and an alarm output unit 3.

The sensor unit 1 is centered on a force sensor such as strain gauge S and is attached to a suitable place of an external structure in which deformation due to physical force by an intruder is expected. The sensor signal processing unit 2 is composed of a shockstone bridge 21 or an equivalent circuit thereof and a sensor signal processing electronic circuit 22 for processing an electric signal therefrom to determine whether an alarm has occurred. The alarm output unit 3 receives the alarm signal 31 from the sensor signal processing unit 2, generates a signal in accordance with a desired alarm method, and finally generates an alarm.

As shown in FIG. 1, when the input voltage E is applied to the shockstone bridge 21 of the sensor signal processing unit 2 and the strain gauge S has the same resistance value R as the remaining three resistors, the output of the shockstone bridge 21 is performed. The voltage Eo becomes zero. Strain gauge (S) has the characteristic that the resistance value changes when deformation by external force occurs, the resistance value changes according to the deformation caused by the external force of a specific point of the structure to which it is attached, and accordingly the output voltage Eo ( It occurs according to equation (1).

In Equation 1, F denotes the magnitude of the external force at a specific point of the structure to which the strain gauge S is attached. Indicates stress strain. In this way, the output voltage Eo of the shockstone bridge 21 generated by the external force applied to the structure is used as a basic signal for determining whether to generate an alarm in the present invention.

However, not only is it too weak to use the output voltage Eo as it is, but there is a problem of an error caused by a change in the resistance value of the strain gauge S due to other factors other than intrusion, including temperature change. In order to solve this problem, the Eo value is sent to the sensor signal processing electronic circuit 22 of the sensor signal processing section 2.

Fig. 2 is a brief description of the sensor signal processing electronic circuit 22. The signal Eo from the Samson Bridge 21 or its equivalent circuit is amplified by K times and its absolute value K * | Eo | The amplifier 25 generates a value, and compares the generated value with the voltage Ei (27), which is adjusted at the time of installation and supplied according to the use environment such as the state of the attachment structure and the temperature change, and thus K * | Eo | Is a comparator (signal comparator) 26 that outputs the alarm signal 31 only when Ei is greater than Ei. Of course, the alarm signal 31 is output also at the time of cutting | disconnection of the sensor 1 connection line, as can also be seen from the structure of the shockstone bridge 21 circuit.

The alarm output unit 3 receives the alarm signal 31 from the sensor signal processing unit 2, converts it through the alarm output interface 32 according to the desired alarm method, and finally outputs it to the alarm output unit 33. do. 3 is an explanatory diagram of the alarm output unit 3, which outputs an alarm signal 31 from the sensor signal processing unit 2 and passes through a signal level detector 35 that checks its level (1 or 0). It is sent to the alarm output device 33 via the interface 36.

Examples of the alarm output unit 33 include various devices for generating an alarm sound, wired and wireless transmission of an alarm fact, and automatic operation of a specific device, and the alarm output interface 36 includes each of these used alarm output units 33. It converts the alarm signal into a form suitable for and has a function of transmitting to the corresponding alarm output 33.

As described above, the present invention relates to the configuration of an alarm device against intrusion using an external structure such as a gas pipe installed on an exterior wall of an apartment, and the like, since the installation cost is low, and the operation is simple and effective. In addition, it is expected to be widely used to generate and block alarms for intrusion using external structures such as gas pipes installed on the exterior walls of apartments, which frequently occur frequently.

Claims (3)

In the configuration of an alarm device for intrusion using an external structure such as a gas pipe installed on the outer wall of a building, such as an apartment, First means attached to the external structure, the sensor unit being configured around a force sensor such as a strain gauge for sensing a force applied to the external structure when an intrusion occurs; A second means of a sensor signal processing unit configured of a sensor signal processing electronic circuit which processes the signal sensed by the first means and determines whether an intrusion is detected; And And a third means of an alarm output unit for notifying the intrusion fact determined by the second means by a desired alarm method. The sensor signal processor of claim 1, wherein the sensor signal processor determines whether an invasion is performed by processing a signal sensed by the sensor unit. For signal processing from force sensors such as strain gauges that detect forces applied to external structures in the event of an intrusion, the shockwave bridge or its equivalent circuit, signal amplifier, and the voltage supplied and adjusted during installation Alarm device characterized by the use of a comparator (26: signal comparator) circuit, etc., for comparing and determining alarm conditions. The alarm output unit according to claim 1, wherein the alarm output unit receives an alarm signal from the sensor signal processing unit and outputs the alarm signal to an alarm generator. An alarm device comprising an alarm output interface for converting and outputting an alarm signal according to various alarm methods including an alarm sound generator, a wired / wireless transmitter of an alarm fact, and an automatic actuator of a specific device.