JPH0998701A - Termite detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of constantly monitoring the occurrence of insect damage of a termite in an arbitrary state and actualizing early detection of the insect damage of the termite. SOLUTION: This termite detector is obtained by equipping an electrically insulating material 4 liable to be damaged by a termite with a detecting part 2 made by forming an electroconductive pattern 5 composed of an electroconductive material and with a detecting part 3 which discovers change in electrical characteristics of the electroconductive pattern 5 of the detecting part 2 and outputting the detecting signal of the termite.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for electrically detecting termite inhabitation in houses, soil and wood.

[0002]

2. Description of the Related Art As a method for early detection of termite feeding damage,
It is still common today to find food damage by observing the condition of the inspected part by a skilled craftsman, but as a method to make it easier, the wood that termites prefer is buried in the soil and periodically checked. Have been proposed, and a method of electrically detecting the collapse of timber due to termite feeding damage by a limit switch has been proposed.

Further, as an electrical early detection method, a method of electrically detecting sound or the like emitted by termites, and a means of confirming the inhabitation of termites with a small photoelectric sensor are being studied. However, in any of these methods, the shape of the device itself is inevitably larger than that of the termite to be detected, and the installation location of the detection device is practically limited.

[0004]

According to such a conventional technique, an apparatus for early detection of termite feeding damage has to have a complicated structure, and even if it exhibits desired performance, It is limited to detection, and it is difficult to detect minute gaps and wide areas.

[0005]

OBJECTS OF THE INVENTION The object of the present invention is to provide a device for realizing early detection of termite damage by constantly monitoring the occurrence of feeding damage in termites in any situation against the background of the above-mentioned conventional techniques. It is to be.

[0006]

In order to achieve the above object, the present invention provides a termite detecting device in which a conductive pattern is formed of a conductive material on an insulating material that can be eaten by termites. The electrically conductive pattern detects changes in electrical characteristics that occur when cutting or an increase in resistance value is caused by the feeding damage of termites, and the feeding damage of the termites can be detected by an appropriate output means.

[0007]

1 shows an embodiment of a termite detecting device 1 according to the present invention. The termite detection device 1 includes a detection unit 2
And a detection unit 3.

The detecting section 2 has a structure in which a conductive pattern 5 made of a conductive material, such as conductive ink, is formed on an insulating material 4 such as paper which can be eaten by termites. When detecting food damage locally, the detection unit 2 is made small, and when detecting food damage over a large area, the detection unit 2 is shaped to fit the detection range and has a large area.
Then, the conductive pattern 5 is formed in a zigzag shape in a necessary area range in order to set the detection range over the entire area portion in accordance with the areas.

Further, the detecting section 3 is assembled by an electric circuit element in order to detect an electric change of the conductive pattern 5 and output a detection signal of a termite. That is, one end of the conductive pattern 5 is connected to the negative electrode of the battery 6 and the ground 7, and the other end of the conductive pattern 5 is connected to the positive electrode of the battery 6 via the resistor 8. ing. The connection point between the conductive pattern 5 and the resistor 8 is connected to the base of the transistor 10 in the front stage of the two transistors 10 and 11 for switching in Darlington connection, and the emitter of the transistor 11 in the rear stage is The negative electrode of the battery 6 and its collector are a buzzer for warning and L for display.
It is connected to the positive side electrode of the battery 6 via an output means 12 such as an ED and an output terminal for transmitting a termite detection signal, and a resistor 9. A capacitor 13 is connected in parallel to the output means 12 as required.

When detecting termites, the detection unit 2 fixes the object to be detected, for example, the base, the pulling, the base plate, etc. in a building, and directly embeds it in the soil, etc.
It will be installed by embedding it in a state of being sandwiched between inspection wood and the like.

In the initial state, the conductive pattern 5 is set to a predetermined resistance value, and the switching transistors 10 and 11 are off. Therefore, the battery 6 is hardly consumed.

When the insulating material 4 is eaten by a termite and a chip is generated in the conductive pattern 5 with it,
The resistance value of the part becomes larger than that of the initial part, and when the feeding damage further progresses and the part is cut, the resistance value becomes infinite. At this time, the first transistor 10
Since the base potential of the transistor rises, the transistors 10, 11
Turns on, which causes current to flow from the battery 6 to the resistor 9 and the output means 12.

Therefore, the output means 12 generates a termite detection signal from the output terminal and, if necessary,
By sounding the buzzer or turning on the LED,
Notify the administrator etc. of the detection status of termites. Instead of a display means such as a buzzer or LED, a photo coupler,
By using an output conversion device such as a relay and connecting to a communication line control device such as an NCU (network control unit), it is possible to monitor the feeding damage condition of termites at a remote place through the communication line.

[0014]

Other Embodiments The electric circuit of the detection unit 3 is not limited to the circuit configuration such as the switching means for detecting the resistance change, and for example, the conductive pattern 5 is incorporated on one side of the bridge circuit,
The circuit configuration may be such that the change in the electrical balance is detected by a comparison means or the like.

[0015]

As described above, the termite detecting device of the present invention has a simple structure in which a conductive pattern made of a conductive material is formed on an insulating material that can be eaten by termites. The shape and size can be changed as needed. Therefore, conventionally,
It is possible to detect small gaps and hidden areas where it was difficult to install a termite detection device, or a wide area, and it is possible to detect termite feeding damage earlier and more reliably than before.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a termite detection device of the present invention.

[Explanation of symbols]

 1 Termite Detecting Device 2 Detecting Part 3 Detecting Part 4 Insulating Material 5 Conductive Pattern 6 Battery 7 Earth 8 Resistor 9 Resistor 10 Transistor 11 Transistor 12 Output Means 13 Capacitor

Front page continuation (72) Inventor Takeyuki Shiotsuki 1-12-3 Akanehama, Narashino City, Chiba Ikari Yakuhin Co., Ltd.

Claims (1)

[Claims] 1. A detection unit comprising a conductive pattern formed of a conductive material on an insulating material that can be eaten by termites, and a change in the electrical characteristics of the conductive pattern of the detection unit is detected.
A termite detection device comprising: a detection unit that outputs a detection signal of a termite.