JP6755450B2 - Opposed radio sensor sighting device - Google Patents

Description

The present invention relates to a radio wave sensor composed of a transmitter for transmitting radio waves and a receiver for receiving radio waves, and particularly relates to a structure of a sight for confirming the antenna directions of the transmitter and the receiver. is there.

As a conventional radio wave sensor used for the purpose of detecting an intruder for crime prevention, there is a form in which a transmitter and a receiver are installed facing each other with a warning section separated. When a human (intruder) passes through the caution section, a part of the radio wave being received is blocked and the received signal becomes smaller, so that the detection signal is output.

Since radio waves are reflected by surrounding buildings, fences, ground, etc., the radio wave sensor may be in a warning state even if the antenna is pointed in the direction in which the radio waves are reflected, and if it is operated as it is, a correct warning section should be formed. The detection area becomes wider, causing malfunctions that detect the movement of people, cars, trees, etc. in the vicinity other than the area you want to watch out, or the grass, trees, etc. in the warning section are blown by the wind and shake. A malfunction that detects a small movement of the antenna may occur.
Therefore, in order to form a correct warning section and exhibit sufficient performance, it is necessary to correctly face the antennas of the transmitter and the receiver.

In addition, there is a radio wave sensor in which the distance between the transmitter and the receiver in the warning section is several hundred meters, and the longer the warning section, the more difficult it is to adjust the direction of the antenna. Therefore, the radio wave sensor is also provided with a sight similar to the sight of the infrared sensor of Patent Document 1.

5 is a view showing a conventional sight, FIG. 6 is a schematic cross-sectional view of surface C of FIG. 5, and FIG. 7 is a schematic cross-sectional view of DD of FIG.
It includes a reflector antenna 11 and a light collection prevention plate 12. The light collection prevention plate 12 is for preventing the electronic components from becoming hot and damaged or the resin from melting when strong light is collected by the reflector antenna 11.

As shown in FIGS. 5 and 6, the eyepiece transmissive unit 14, the objective translucent unit 15, and the plane reflector 16 are provided, and the objective translucent unit 15 aims at the eyepiece transmissive unit 15 via the plane reflector 16. It constitutes the optical axis. The aiming optical axis refers to an optical axis that passes through the center of each of the objective translucent part, the plane reflector, and the eyepiece translucent part from the R direction in which the object (transmitter or receiver installed facing each other) is located.

When the object (transmitter or receiver installed facing each other) adjusts the angle in the direction located at the center of the objective translucent unit 15 when viewed from the eyepiece transmissive unit 14, the antenna directions are matched. It is set to. The transmitter and receiver are equipped with sights, and by making adjustments using the sights on both sides, the antennas of the transmitter and receiver are correctly opposed to each other.

Japanese Patent No. 5568820

However, when adjusting the direction of the antenna, when looking through the eyepiece transmissive portion 14, the operator's field of view is as wide as the field of view 17, so that an extra object can be seen. Then, since the line of sight is not fixed by the plane reflector 16 and it is difficult to know where the aiming optical axis is, it becomes difficult to find an object outside (R direction) of the objective light transmitting portion 15.

Further, when the line of sight from the eyepiece transmissive unit 14 to the objective translucent unit 15 via the plane reflector 16 does not come to the center of the eyepiece translucent unit 14, the plane reflector 16, and the objective translucent unit 15, that is, If the line of sight deviates from the aiming optical axis, the transmitter and receiver antennas cannot be properly opposed to each other even if the adjustment is intended, causing variations among workers and adjusting the direction of the antennas. There is a risk of accuracy difference.

Therefore, it is an object of the present invention to provide a sighting device capable of fixing the line of sight of an operator to the aiming optical axis when adjusting the direction of the antenna and visually adjusting the direction with high accuracy from a certain correct position. And.

In order to solve the above problems, the aiming device of the opposed installation type radio wave sensor of the present invention includes an eyepiece translucent portion, an objective translucent portion, and a plane reflecting mirror, and the objective translucent portion is provided via the plane reflecting mirror. An aiming optical axis is formed on the eyepiece translucent portion, and the reflector antenna is provided with a condensing prevention plate having an elliptical field diaphragm hole at the bottom, and is between the eyepiece translucent portion and the plane reflector. The field diaphragm hole is arranged in.

According to the present invention, the operator can instantly identify the visual field diaphragm hole formed in the lower part of the light collection prevention plate when looking through the eyepiece translucent portion. Therefore, it is possible to easily look through the visual field diaphragm hole from the eyepiece translucent portion at a constant angle, and the line of sight can be fixed to the aiming optical axis at the correct angle.
In addition, since the line of sight can be instantly fixed to the aiming optical axis, the adjustment time for the antenna direction can be shortened, and highly accurate visual adjustment can be performed, reducing variations in the antenna direction due to differences in operators. , Anyone can always make adjustments at a certain level.

Furthermore, since the antennas of the transmitter and receiver can be correctly opposed to each other, the detection area that occurred when the antennas were not oriented correctly became wider, and people, cars, trees, etc. in the vicinity other than the area to be warned of, etc. Malfunctions that detect the movement of the antenna and malfunctions that detect small movements such as grass and trees in the caution section being blown by the wind and shaking are reduced.
The cost of the equipment can be reduced by simply making a hole in the light collection prevention plate that has been used in the past without adding new parts to narrow the field of view of the sight. It also leads to.

It is a figure which showed the embodiment of the sighting device of this invention. It is a figure which showed the light-collecting prevention plate used for the sighting device of this invention. FIG. 1 is a schematic cross-sectional view of surface A of FIG. FIG. 3 is a schematic cross-sectional view taken along the line BB of FIG. It is a figure which showed the conventional sighting device. FIG. 5 is a schematic cross-sectional view of surface C of FIG. FIG. 6 is a schematic cross-sectional view taken along the line DD of FIG.

1 is a view showing an embodiment of the sight of the present invention, FIG. 3 is a schematic cross-sectional view of surface A of FIG. 1, and FIG. 4 is a schematic cross-sectional view of BB of FIG.
As shown in FIGS. 1 and 3, the eyepiece transmissive unit 4, the objective translucent unit 5, and the plane reflector 6 are provided, and the objective translucent unit 5 aims at the eyepiece transmissive unit 4 via the plane reflector 6. It constitutes the optical axis.
A light collection prevention plate 2 is provided at the opening of the reflector antenna 1, and an elliptical field diaphragm hole 3 is formed in the lower portion of the light collection prevention plate 2 as shown in FIG.

As shown in FIG. 3, the visual field diaphragm hole 3 is arranged between the plane reflector 6 and the eyepiece translucent portion 4, and is arranged so that the aiming optical axis passes through the center of the visual field diaphragm hole 3. As a result, when the operator adjusting the direction of the radio wave sensor looks through the eyepiece translucent portion 4, the visual field diaphragm hole 3 can be instantly recognized as shown in FIG. 4, and the line of sight may be directed to the visual field diaphragm hole 3. I understand.
By making the light-collecting prevention plate 2 a dark color such as black or navy blue, the field diaphragm hole 3 becomes more conspicuous and easier to recognize.

By directing the line of sight to the field of view diaphragm hole 3, the worker's field of view is narrowed to the field of view 7, and the operator can look into the field of view at a certain angle, the line of sight is fixed, and the direction of the antenna is adjusted visually with high accuracy. be able to.
In addition, it is possible to reduce variations in the accuracy of antenna direction adjustment due to differences in workers, and it is possible to always adjust the antenna direction at a constant level no matter who performs it.

Furthermore, by adopting a structure that doubles as a light collection prevention plate that has been used in the past, the field of view diaphragm mechanism when adjusting the direction of the antenna reduces the number of parts and assembly man-hours, and also reduces the cost of equipment. be able to.

Although the embodiments of the present invention have been described above, the above-described embodiments are presented as examples, and the scope of the invention is not limited to this, and can be implemented in various other embodiments. It is included in the scope of the invention described in the claims and the equivalent scope thereof.

1 Reflector antenna 2 Condensing prevention plate 3 Eyepiece diaphragm hole 4 Eyepiece translucent part 5 Objective translucent part 6 Plane reflector 7 Field 11 Reflector antenna 12 Condensing prevention plate 14 Eyepiece translucent part 15 Eyepiece translucent part 16 Flat surface Reflector 17 field of view

Claims (1)

A sighting device for confirming the orientation of both antennas of the transmitter or the receiver of the opposed installation type radio wave sensor composed of a radio wave transmitter and a radio wave receiver.
It is equipped with an eyepiece translucent part, an objective translucent part, and a plane reflector.
An aiming optical axis is formed from the objective translucent portion to the eyepiece translucent portion via the plane reflecting mirror.
The antenna is a reflector antenna provided with a condensing prevention plate.
An elliptical field diaphragm hole is made in the lower part of the light collection prevention plate.
A sighting device for an opposed-installed radio wave sensor in which the field diaphragm hole is arranged between the eyepiece translucent portion and the plane reflecting mirror.