JPH0339747Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an infrared monitoring device, and more particularly to a monitoring device characterized by a mounting structure for an infrared transmitter and a receiver.

(Prior art) Photoelectric monitoring devices are installed at regular intervals, send and receive light beams between monitoring devices, and detect when the light beams are interrupted to confirm that a person or object has entered. is well known.

The monitoring devices of the present invention are installed at intervals of 100 to 200 m, and the distance between each monitoring device is long. The task of confirming that the optical axes of the two optical axes are aligned with each other is time-consuming even for experienced workers. Further, since the monitoring device of the present invention is often used in a vast area, and as many as 50 to 60 devices are installed, it is important to carry out the installation work efficiently.

(Problem to be Solved by the Invention) The problem to be solved by the invention is to provide an infrared monitoring device that is easy to install by installing a light transmitter and a light receiver at correct angles.

(Means for solving the problem) The means for solving the problem in this invention are as follows:
A shelf board formed by fixing rings to the upper and lower ends of a plurality of pillars and overlapping the upper and lower rings so as to be rotatable with each other, the shelf board having mounting positions in the circumferential direction with respect to a vertical axis passing through the center of the rings. a pair of adjustable U-shaped support plates; a bearing plate provided on the U-shaped support plates so that the mounting position can be adjusted in the circumferential direction with respect to a vertical axis passing through the center of the ring; and an inner side of the bearing plates. a light transmitter and a light receiver, the mounting angle of which can be adjusted by means of a support shaft provided in a direction perpendicular to the vertical axis passing through the center of the ring; It is characterized in that it is equipped with a sensitivity adjustment meter that measures the state of reception of infrared rays, and that the light transmitter and the light receiver are alternately installed on each shelf board and then housed in a cylindrical cover.

(Function) To install the light transmitter 5 and the light receiver 6, first
Rotate the rings 41 and 40 to determine the mounting angle,
Next, the angle is finely adjusted using the bearing plate 18 joined to the U-shaped support plate 13, and these adjustments are made while observing the pointer of the sensitivity adjustment meter 62 provided on the light receiver 6.

(Example) The example is a monitoring device in which each part of the infrared monitoring device has an explosion-proof structure and is powered by a solar cell, and is convenient for use in areas where there is a risk of explosion, such as an oil complex. It is something.

FIG. 2 is an overall view of the infrared monitoring device, in which the base 1 is box-shaped, a storage battery and a controller are built inside, and a terminal box 2 is provided on the side. The storage battery has an explosion-proof structure with increased safety, and both the controller and the terminal box have a pressure-resistant explosion-proof structure.

Four columns 3 are provided on the upper surface of the base 1 in the vertical direction, and five shelves 4 are provided on the columns 3, and each shelf 4 is provided with a light transmitting device that emits infrared rays. A receiver 5 and a receiver 6 for receiving infrared rays are installed alternately. The support column 3, shelf board 4, light transmitter 5, and light receiver 6 are all covered with a cylindrical cover 7. Note that the cylindrical cover 7 is made of acrylic resin and allows infrared rays to pass therethrough, so there is no problem with transmitting and receiving light.

In addition, a solar cell 8 is provided at the upper end of the cylindrical cover 7. The light transmitter 5 and the light receiver 6 have a pressure-resistant explosion-proof structure, and the solar cell 8 has an increased-safety explosion-proof structure.

FIG. 1 shows the inside of the cylindrical cover 7, and the pillar 3 is provided with five shelves 4.
A light transmitter 5 is installed at the top stage, a light receiver 6 is installed at the lower stage, a light receiver 6 is installed at the next stage, and a light transmitter 6 is installed at the bottom stage.

Details of the light transmitter 5 are shown in FIG. 3, and details of the light receiver 6 are shown in FIG. 4. The light transmitter 5 is provided with a light transmitting section 51 on the front surface of a light transmitter main body 50 having an explosion-proof structure, and the light transmitter main body 50 has an explosion-proof structure.
A cable 52 for supplying power to the inside is installed on the upper and lower surfaces of the
is provided in a sealed structure. On the other hand, the receiver body 60 of the receiver 6 is also formed with an explosion-proof structure, and is provided with a light receiving section 61 on the front surface and a sensitivity adjustment meter 62 for measuring the sensitivity of the infrared reception state on the rear surface. A cable 63 for feeding power inside is provided on the upper and lower surfaces of the main body 60 in a sealed structure.

The mounting structures of the light transmitter and the light receiver are the same and are shown in FIGS. 5-7. The shelf board 4 is composed of two plates formed in a ring shape, and four pillars 3 are used, and an upper ring 4 is attached to the upper end of each pillar 3.
A lower ring 41 is connected to the lower end of the ring 40, and the upper ring 40 and the support column 3 and the lower ring 41 and the support column 3 are connected with a tension bolt 10. Then, the upper ring 40 and the lower ring 41 are polymerized.
A shelf board 4 is formed by two rings, and arc-shaped elongated holes 11 are provided along and opposite the rings.
Both rings 4 are tightened by tightening bolts 12 through
0,41 are combined.

Further, on the upper surface of the lower ring 41 of the shelf board 4, a pair of lower plates 14 of the U-shaped support plates 13 are superimposed at positions 90 degrees apart from and opposite to the mounting position of the tightening bolts 12, and both are connected to the connecting bolts. 16. The connecting bolt 16 is inserted into an arcuate long hole 17 provided in the lower ring 41. Furthermore, a bearing plate 18 bent at right angles is superimposed on the upper plate 15 of the U-shaped support plate 13, and a connecting bolt 2 is inserted through an arcuate hole 19 provided in the bearing plate 18.
0 connects the U-shaped support plate 13 and the bearing plate 18. Note that the shelf board 4 has a tightening bolt 1
By loosening the connecting bolts 16 and 2, the upper ring 40 and lower ring 41 rotate in the circumferential direction with respect to the ring center line, and the mounting positions of each ring can be mutually changed, and the bearing plate 18 is also supported in a U-shape. When the connecting bolt 20 with the plate 13 is loosened, the ring can be rotated in the circumferential direction with respect to the center line of the ring.

A light transmitter or a light receiver is attached to the inside of the rising portion of the bearing plate 18, and in the drawing, the light receiver 6 is attached. The light receiver 6 is mounted inside the bearing plate 18 by a supporting shaft 21 extending perpendicularly to the vertical direction so that the mounting angle can be changed in the vertical direction.

The embodiment has the above structure, and the infrared monitoring devices of the embodiment are installed at intervals of 100 to 200 m. Then, infrared light is transmitted and received between the monitoring devices to monitor intrusion of people and objects. Note that a solar cell 8 is used as a power source for the light transmitter 5 and the light receiver 6 during the daytime. This solar cell 8 supplies power to the light transmitter 5 and the light receiver 6, and also charges the storage battery in the base 1. When the solar cell 8 is no longer charged at night, the controller operates automatically. The light transmitter 5 and the light receiver 6 are operated using the storage battery as a power source. Therefore,
The monitoring device is capable of continuing monitoring operations throughout the day.

Next, the infrared rays emitted from the transmitter 5 are transmitted to the receiver 6.
In order to receive the light in the correct position, first place the shelf board 4.
Tightening bolts 12 and U-shaped support plate 1 fixing upper ring 40 and lower ring 41 forming
3. Loosen the connecting bolt 16 and adjust the mounting angle of the ring itself to determine the desired angle. At the same time, the vertical angle of the light receiver 6 is adjusted by the support shaft 21 of the bearing plate 18 of the U-shaped support plate 13.

These adjustment operations are performed while observing the pointer of the sensitivity adjustment meter 62. Since the pointer of this sensitivity adjustment meter 62 is designed to move when it receives infrared rays, find the point where the pointer of the meter swings strongly, and firmly tighten each bolt at the position where the needle swings the most.

Even after the above installation work is completed, the bearing plate 18 of the U-shaped support plate 13 allows you to change the direction of only the transmitter and receiver by loosening the connection bolt 20.
Final adjustments are made using the bearing plate 18. After both the light transmitter 5 and the light receiver 6 are set at desired angles, the cylindrical cover 7 is attached, power is supplied to each device, and monitoring operation is started.

(Effects of the invention) The present invention provides a sensitivity adjustment meter for measuring the sensitivity of the infrared reception state on the receiver when setting the mounting angle of the transmitter and receiver, and also allows adjustment of the mounting angle of the transmitter and receiver. The shelf board on which the light receiver is installed is composed of two rings that can rotate relative to each other, and the bearing plate on which the light transmitter and light receiver are attached is mounted on a U-shaped support plate and rotates around the center of the ring. The transmitter and receiver can be rotated in the circumferential direction with respect to the vertical axis passing through the ring, and can also be rotated in the vertical direction by means of a support shaft provided on the bearing plate in a direction perpendicular to the vertical axis passing through the center of the ring. Since the adjustment can be done while looking at the pointer of the sensitivity adjustment meter, the installation and adjustment work of the light transmitter and the light receiver can be easily performed.

In addition, the present invention has the effect that the mounting angle of the light transmitter and light receiver can be adjusted even after the ring is fixed, so that both the light transmitter and the light receiver can be installed at a more accurate angle. There is.

[Brief explanation of the drawing]

Fig. 1 is a side view of the infrared monitoring device of the present invention in which the transmitter and receiver are housed with the cylindrical cover partially cut away; Fig. 2 is a side view of the infrared monitoring device;
The figure is a cross-sectional view of the light transmitter, Figure 4 is a cross-sectional view of the light receiver,
Figure 5 is a front view showing the mounting structure of the light transmitter and receiver, Figure 6 is a sectional view taken along line A-A in Figure 3, and Figure 7 is the
It is a sectional view taken along line B-B. 1...base, 2...terminal box, 3...post, 4...
...shelf board, 40...upper ring, 41...lower ring,
5... Light transmitter, 6... Light receiver, 62... Sensitivity adjustment meter, 7... Cylindrical cover, 8... Solar cell, 1
0... Tensioning bolt, 11... Elongated hole, 12... Tightening bolt, 13... U-shaped support plate, 16... Connection bolt, 17... Elongated hole, 18... Bearing plate, 19...
Arc-shaped hole, 20... Connection bolt, 21... Support shaft.

Claims (1)

[Scope of utility model registration request] A shelf board formed by fixing rings to the upper and lower ends of a plurality of pillars and overlapping the upper and lower rings so as to be rotatable with each other, the shelf board having mounting positions in the circumferential direction with respect to a vertical axis passing through the center of the rings. a pair of adjustable U-shaped support plates; a bearing plate provided on the U-shaped support plates so that the mounting position can be adjusted in the circumferential direction with respect to a vertical axis passing through the center of the ring; and an inner side of the bearing plates. a light transmitter and a light receiver, the mounting angle of which can be adjusted by means of a support shaft provided in a direction perpendicular to the vertical axis passing through the center of the ring; An infrared monitoring device comprising a sensitivity adjustment meter for measuring the state of reception of infrared rays, the light transmitter and the light receiver being alternately installed on each of the shelf boards and then housed in a cylindrical cover.