JP2000029390A - Sealing destruction detecting seal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to detect the cutting/short circuit of a lead wire extending to a sensor part by connecting a two-core shielding wire, etc., or a terminal resistance to the lead wire to be connected to the sensor part. SOLUTION: A sealing destruction detecting seal has a detection circuit, in which a wire conductive material 2 and a wire conductive material 3 are alternately closely arranged and are put in a plane form on the adhered surface of the sealing paper 1, thereby allowing the peeling, cutting, etc., of the sealing paper to be detected as the cutting of the wire conductive material 2 or the short circuit between the wire conductive material 2 and the wire conductive material 3. The two-core shielding wire or the terminal resistance is utilized, thereby allowing the direction of a signal current not to be read from outside. The short circuit or peeling applied on the electric wire or seal is caught as the change of current value and a signal is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal discarding detection seal capable of detecting an illegal act performed by discarding various sealing papers at the time of start.

[0002]

2. Description of the Related Art Conventionally, regarding this type of discard detection,
Affixing a seal made of optical fiber or linear conductive material in a planar shape to the protective wall or the back side of the junction of the trunk, and cutting off light and current generated when cutting with a tool etc. without noticing the existence of the line, Although there is a known means for performing destruction detection, there is no danger that the signal line to be exposed is easily short-circuited due to the fact that the signal line to be exposed is simply short-circuited, and there is no such means that does not detect the time of destruction by the seal applied to the surface of the unsealing detection target. .

[0003]

[0005] Of the optical fibers described in the prior art, it is impossible to replace an optical fiber without blocking light, and although it is optimal for this type of detection, it is difficult to cut and bend. There are features,
Not only is it difficult to process into a seal, but also there is a risk that the entire optical fiber will be peeled off, and it is difficult to incorporate the optical fiber into a seal or the like that can be viewed. The method of detecting by disconnection of the linear conductive material has the danger that the signal line to the sensor is easily short-circuited, the signal is not output, and the seal is destroyed, and there is a problem that it is difficult to use it on the surface of the open detection target. is there.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and an object of the present invention is to connect a two-core shielded wire or the like or a terminating resistor to a conductor connected to a sensor unit. By doing so, it is possible to detect the disconnection / short-circuit of the lead wire to the sensor part, and further lay two sheets of linear conductive material on the lower side of the opaque sealing paper alternately in a plane to form a line. Providing a circuit that issues an alarm when the conductive material is cut or short-circuited is considered to be the most reliable means of detecting a discarding action applied to the seal paper.

[0005]

Means for Solving the Problems In order to achieve the above object, the sealing paper 1 of the seal for discarding detection in the present invention is made opaque.

A linear conductive material 2 and a linear conductive material 3 are arranged on the bonding surface side of the sealing paper 1 so as to be alternately close to each other, the width of the line is 0.5 mm or less, and the interval between the linear conductive materials is 1 mm. The following is preferred.

Terminals 4 and 5 are provided at both ends of the linear conductive material 2, and terminals 6 are provided at one point on the line of the linear conductive material 3.

[0008] Terminals 4 and 5 are covered with signal wires 11
A detection circuit 12 is connected to the terminal 6 and the shield wire 10 is connected to the terminal 6.

The seal paper 1 is provided with a designated print 7 to prevent forgery and the like.

The adhesive surface of the sealing paper 1 is composed of a strong adhesive seal 8 and a release paper 9 to be attached to an opening detection target portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In FIGS. 1 to 4, when the seal discard detection seal of the present invention is used, first, as described above,

The release paper 9 (unnecessary after pasting) is peeled off from the strong adhesive seal 8 and attached to the opening detection target portion.

A fixed resistor R [Ω] is connected between the terminals 5 and 6.

A constant voltage E [V] is applied between the terminals 4 and 6.

【Example】

When the two-core shielded wires 10, 11 and 12 connected to the seal for discarding detection of the present invention are short-circuited or cut with a metal such as a needle or a cutter knife, the shielded wire 1.
The structure is such that the coated wires 11 and 12 are short-circuited with 0 and the coated wires 11 and 12 are cut if the wire is further cut.

When the sealing paper 1 is peeled off as it is, the sealing paper 1 is torn and the pattern of the linear conductive material 2 is cut, so that the terminal 4.
A disconnection state occurs between the five sections. In the case where an attempt is made to peel off with a cutter knife or the like, the adjacent linear conductive material 2 and linear conductive material 3 are short-circuited via a sword or the like, and conduction is caused between the terminals 4, 5, and 6.

When the sealing paper 1 is peeled off, the structure of the linear conductive materials 2 and 3 between the strong adhesive seal 8 and the sealing paper 1 is cut by tearing of the sealing paper 1.

The present invention is configured as described above, and has the following effects.

"The current flowing through the resistor is proportional to the voltage,
According to Ohm's law, which is inversely proportional to the resistance, when a resistance of R [Ω] is connected to a power supply of E [V], if a current flowing through this detection circuit is I [A], I = E / R [A ] Holds. Therefore, when the voltage is constant and the resistance value between the terminals 4 and 6 changes, when the fixed resistance RΩ is connected to the terminals 5 and 6, the normal state is RΩ + line resistance.
At the time of an abnormal short circuit, only the line resistance (several ohms) is obtained, and at the time of disconnection, the resistance becomes infinite. From this, it is possible to easily detect the breakage of the seal by detecting a change in the current value due to a short circuit or disconnection between the conductive materials.

[0018] By providing a structure for outputting by short-circuit or disconnection, the surface of the opening detection object is attached to the surface, and by using the opaque sealing paper 1, the arrangement pattern of the linear conductive materials 2 and 3 can be read without any problem. An alarm is issued even if peeling off from the direction or mischief with a needle point or the like.

By making the sealing paper 1 thin and sticky, it is easy to stick and it is difficult to peel it off. Even if the sealing paper 1 is pasted again, it can be layered by the adhesive applied to the sealing paper 1. Is produced, and the linear conductive materials 2 and 3 are short-circuited / disconnected.

By connecting the terminals 4 and 6 of the next seal discard detection seal to the terminals 5 and 6 and connecting fixed terminal resistors to the final seal discard detection seal terminals 5 and 6, a plurality of attachments can be performed. .

[0021] Two- or three-wire detection is possible without the need for a sensor power supply.

In general, not only the position of the terminal but also the direction of the signal current cannot be confirmed from the outside, and it is possible to accurately detect when the seal is discarded by directly attaching the terminal to the opening detection target portion.

[Brief description of the drawings]

FIG. 1 is a plan view of a seal discarding detection seal of the present invention on an adhesive surface side.

FIG. 2 is a circuit diagram of the seal discard detection seal of the present invention.

FIG. 3 is a system diagram in which a plurality of seal discard detection seals are connected.

FIG. 4 is a view showing a usage state in which a seal discard detection seal is attached to an opening detection target.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealing paper 2 Linear conductive material 3 Linear conductive material 4 Terminal 5 Terminal 6 Terminal 7 Printing 8 Strong adhesive seal 9 Release paper 10 Shield wire 11 Covered wire 12 Covered wire a Opening detection target part R Resistance E Voltage I Current

Claims (1)

[Claims] 1. A detection circuit in which linear conductive materials 2 and linear conductive materials 3 are alternately brought close to an adhesive surface of a sealing paper 1 and are laid in a plane so that peeling and cutting of the sealing paper 1 are performed in a linear manner. A seal discarding detection seal for detecting a cut of the conductive material 2 or a short circuit between the linear conductive material 2 and the linear conductive material 3.