JPH0816939A - Heat ray sensor and its adaptor - Google Patents

Abstract

PURPOSE:To prevent the incorrect reports of a heat ray sensor that are caused by such bugs as moths, cockroaches. CONSTITUTION:An ultrasonic wave generator 7 is provided on the side face of a circuit part 2 of a heat ray sensor main body 1. Then the generator 7 includes an ultrasonic vibrator and its drive circuit, and the ultrasonic wave generated by the generator 7 is set at such frequency that can effectively ward off the bugs. The intensity of the ultrasonic wave is set at such levels that keep the bugs away from the main body 1 in a range of 50cm-1m. Thus it is possible to keep the bugs away from the heat ray sensor by means of the ultrasonic waves and to prevent the incorrect reports of the sensor that are caused by the bugs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat ray sensor and a heat ray sensor adapter attached to the heat ray sensor.

[0002]

2. Description of the Related Art Heat ray sensors are widely used in crime prevention systems for detecting intruders and the like.

However, since the heat ray sensor detects a moving body that radiates heat rays, it gives a warning when insects such as moths fly near it. It is to be noted that the reporting means outputting a signal indicating that a moving body that radiates heat rays has been detected.

When a heat ray sensor for the purpose of detecting an intruder gives an alarm, this alarm indicates that there was an intruder, but as described above, insects such as moths flew nearby. In some cases, the alarm was issued even though there were no intruders. That is, false information is generated.

The heat ray sensor is usually attached to a high place such as a ceiling, but cockroaches may crawl on the cover surface of the heat ray sensor. In this case as well, the heat ray sensor may give an alarm, but this is also a false alarm.

As described above, the conventional heat ray sensor has a problem that an erroneous report is generated by an insect.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat ray sensor and a heat ray sensor adapter which can prevent false alarms caused by insects.

[0008]

In order to achieve the above object, the heat ray sensor of the present invention is provided with an ultrasonic wave generating means for generating an ultrasonic wave having a frequency effective for avoiding insects.

Further, the heat ray sensor adapter of the present invention comprises:
A heat ray sensor adapter mounted between a heat ray sensor mounting base and a heat ray sensor body, wherein the heat ray sensor adapter is provided with an ultrasonic wave generating means for generating an ultrasonic wave of a frequency effective for avoiding insects. It is characterized by

[0010]

The heat ray sensor of the present invention is provided with an ultrasonic wave generating means for generating an ultrasonic wave having a frequency effective for avoiding insects, so that insects such as moths and cockroaches should be kept away from the heat ray sensor. As a result, false alarms caused by insects can be prevented.

The heat ray sensor adapter of the present invention comprises:
It is attachable between the mounting base of the heat ray sensor and the heat ray sensor body, and is provided with an ultrasonic wave generating means for generating an ultrasonic wave of a frequency effective for avoiding insects.

Therefore, by attaching this heat ray sensor adapter to the heat ray sensor, insects such as moths and cockroaches can be kept away from the heat ray sensor, and false alarms due to insects can be prevented.

Further, since the heat ray sensor adapter can be attached to the existing heat ray sensor, it can be attached at any time when the false alarm caused by the bug becomes a problem in the existing heat ray sensor.

[0014]

Embodiments will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing the configuration of an embodiment of a heat ray sensor according to the present invention, in which 1 is a sensor body, 2 is a circuit portion, and 3 is a circuit body.
Is an optical block, 4 is a cover, 5 and 6 are terminals, 7 is an ultrasonic generator, 10 is a mounting base, 11 is an opening, 12,
Reference numeral 13 represents a terminal.

The mounting base 10 is for mounting the sensor body 1 at a predetermined location such as a ceiling, and an opening 11 for drawing in the power supply line and the signal line is provided at a predetermined location on the side in contact with the mounting surface. It is provided.

Further, terminals 12 and 13 are provided inside the mounting base 10. One terminal is connected to a drawn power supply line, and the other terminal is connected to a drawn signal line. . Here, it is assumed that the power supply line is connected to the terminal 12 and the signal line is connected to the terminal 13.

Since the power supply line and the signal line are two lines, both terminals 12 and 13 actually consist of a pair of terminals, but they are shown as one in FIG. . The same applies hereinafter.

Having described the mounting base 10, the sensor body 1 will now be described. The optical block 3 includes a reflecting mirror and a pyroelectric element arranged at a substantially focal position of the reflecting mirror. The optical block 3 includes the circuit unit 2
It is mounted on one side with adjustable angle. The cover 4 covers the optical block 3 so as to cover the circuit unit 2.
Attached to. The cover 4 is detachably attached to the circuit unit 2. However, since the attachment structure is well known, detailed description thereof will be omitted.

The circuit section 2 accommodates a substrate on which a predetermined circuit such as a circuit for performing a predetermined process on a signal from the pyroelectric element of the optical block 3 is mounted. Further, terminals 5 and 6 are provided on the side of the circuit unit 2 opposite to the side on which the optical block 3 is attached. These terminals 5 and 6 are provided when the sensor body 1 is attached and fixed to the attachment base 10. To the terminals 12 and 13 of the mounting base 10, respectively.
It is provided so as to come into contact with. Since the mounting mechanism for the sensor body 1 and the mounting base 10 is well known, detailed description thereof will be omitted.

Further, an ultrasonic wave generator 7 is provided on the side surface of the circuit portion 2 of the sensor body 1. The ultrasonic generator 7 includes an ultrasonic vibrator and a drive circuit for the ultrasonic vibrator, and the power is supplied from a terminal 5 that is in contact with a terminal 12 to which a power line of the mounting base 10 is connected. ing.

Although two ultrasonic wave generators 7 are shown in FIG. 1, the number of ultrasonic wave generators 7 to be provided is arbitrary, but in general, m ultrasonic wave generators 7 of about 360 / m ° are provided. It may be arranged at intervals.

Further, the frequency of the ultrasonic wave generated from the ultrasonic wave generator 7 needs to be an effective frequency for avoiding insects, but since there are various known such frequencies, among these frequencies. The desired frequency may be adopted.

Here, the question is how far the ultrasonic waves generated from the ultrasonic wave generator 7 should be delivered. However, considering the size of moths and cockroaches, these insects can be detected from the sensor body 1. There is no problem unless the distance is within the range of 50 cm to 1 m. Therefore, the drive circuit of the ultrasonic wave generator 7 may be set so that the ultrasonic wave having the intensity satisfying this condition is generated.

As described above, when the mounting base 10 is mounted at a predetermined mounting position to connect the power supply line and the signal line to the terminals 12 and 13, respectively, and the sensor body 1 is mounted to the mounting base 10, ultrasonic waves are generated. Generator 7
Since power is supplied to the device, a predetermined ultrasonic wave is generated, which can prevent insects from approaching the heat ray sensor.

In the above description, the ultrasonic wave generator 7 is provided on the side surface of the circuit section 2, but it is clear that it can be provided at any place as long as it does not block the visual field of the optical block 3. .

The embodiment of the heat ray sensor according to the present invention has been described above. Next, the embodiment of the heat ray sensor adapter according to the present invention will be described.

FIG. 2 is a sectional view showing the construction of an embodiment of the heat ray sensor adapter according to the present invention. In the figure, 20 is an adapter, 21, 22 are terminals, 23 is an ultrasonic wave generator, 2
Reference numerals 4 and 25 denote openings. In FIG. 2, the same components as those shown in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted.

In this embodiment, the sensor body 1 differs from the sensor body shown in FIG. 1 only in that it does not have an ultrasonic generator. That is, the sensor body 1 shown in FIG. 2 is similar to the sensor body of the conventional heat ray sensor.

The adapter 20 can be attached to the attachment base 10 by a known attachment mechanism similar to the attachment mechanism of the attachment base and the sensor body in the conventional heat ray sensor, and the adapter 20 can be attached in the same manner. The sensor body 1 can be attached by the mechanism. Since this mounting mechanism is well known, its description is omitted.

The adapter 20 is provided with terminals 21 and 22. The terminals 21 and 22 are provided so as to contact the terminals 12 and 13 of the mounting base 10, respectively, when the adapter 20 is mounted and fixed to the mounting base 10. In this embodiment as well, the power supply line is connected to the terminal 12 and the signal line is connected to the terminal 13.

Further, openings 24 and 25 are opened at positions corresponding to the terminals 21 and 22 on the side opposite to the side where the terminals 21 and 22 of the adapter 20 are projected. The openings 24, 25 are provided in the adapter 20 for the sensor main body 1.
This adapter 20 is provided to insert the terminals 5 and 6 of the sensor body 1 when attaching the adapter 20.
The terminals 21 and 22 and the terminals 5 and 6 of the sensor body 1 are configured to come into contact with each other inside the adapter 20 when the sensor body 1 is attached and fixed to the adapter 20.

Further, an ultrasonic wave generator 7 is provided on the side surface of the adapter 20. The ultrasonic wave generator 7 includes an ultrasonic wave oscillator and a drive circuit thereof, and the power is supplied from a terminal 21 of the adapter 20.

Although two ultrasonic wave generators 7 are shown in FIG. 2, the number of ultrasonic wave generators 7 to be provided is arbitrary, but in general, m ultrasonic wave generators 7 of about 360 / m ° are provided. It may be arranged at intervals.

Further, the frequency of the ultrasonic wave generated from the ultrasonic wave generator 7 needs to be a frequency effective for avoiding insects, and such a frequency is well known as described above.

Furthermore, as to the distance to which the ultrasonic waves generated from the ultrasonic wave generator 7 should be delivered, there is a problem as long as the insect does not approach within 50 cm to 1 m from the sensor body 1 as described above. Therefore, the drive circuit of the ultrasonic generator 7 may be set so that the ultrasonic wave having the intensity satisfying this condition is generated.

As described above, when the sensor body 1 is mounted, the mounting base 10 is mounted at a predetermined mounting position to connect the power supply line and the signal line to the terminal 1 respectively.
2 and 13, the adapter 20 is attached to the attachment base 10, and the sensor body 1 is attached to the adapter 20.
Can be attached.

Then, the adapter 2 is attached to the mounting base 10.
0 is attached and fixed so that the ultrasonic generator 7
Since power is supplied to the device, a predetermined ultrasonic wave is generated, which can prevent insects from approaching the heat ray sensor.

From the above description, it is clear that the adapter 20 can be mounted between the mounting base of the conventional heat ray sensor and the sensor main body, and therefore, in the existing heat ray sensor, there are no moths, cockroaches, etc. When the false alarm due to the bug becomes a problem, the adapter 20 can be attached, and thus the false alarm due to the bug can be prevented.

Although the embodiments of the present invention have been described above, it is apparent that the present invention is not limited to the above embodiments and various modifications can be made.

[Brief description of drawings]

FIG. 1 is a sectional view showing the configuration of an embodiment of a heat ray sensor according to the present invention.

FIG. 2 is a cross-sectional view showing a configuration of an embodiment of a heat ray sensor adapter according to the present invention.

[Explanation of symbols]

1 ... Sensor body, 2 ... Circuit part, 3 ... Optical block, 4 ...
Cover, 5, 6 ... Terminal, 7 ... Ultrasonic generator, 10 ... Mounting base, 11 ... Opening, 12, 13 ... Terminal, 20 ... Adapter, 21, 22 ... Terminal, 23 ... Ultrasonic generator, 2
4, 25 ... Opening.

Claims (2)

[Claims] 1. A heat ray sensor comprising an ultrasonic wave generating means for generating an ultrasonic wave having a frequency effective for avoiding insects. 2. A heat ray sensor adapter mounted between a heat ray sensor mounting base and a heat ray sensor body, wherein the heat ray sensor adapter generates ultrasonic waves having a frequency effective for avoiding insects. An adapter for a heat ray sensor, which is provided with a means.