JPH0213358B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an integrated intrusion detector that uses ultrasonic waves, light, radio waves, etc., and relates to a signal transmission system that transmits ultrasonic waves, light, radio waves, etc. signals into the atmosphere. The element and the receiving element, which receives the signal sent into the atmosphere from the signal transmitting element and reflected by an object, are arranged diagonally of the vessel whose front surface is approximately square. Mounting holes and external connection terminals are arranged on the remaining plane of the shaped body, and the front surface of the nearly square shaped body is partitioned between the hole from which the signal transmitting element and the receiving element protrude, and this hole. covered with a first lid body having a partition;
The integrated intrusion detector is characterized in that the front surface of the first lid is covered with a second lid made of a material through which the signal passes and the signal transmitting element, receiving element, etc. are not visible to the naked eye. It is.

Conventionally, a signal transmitting element for ultrasonic waves, light, radio waves, etc. and a receiving element for receiving the signal transmitted from the signal transmitting element into the atmosphere and returned after being reflected by an object are housed in one housing. So-called integrated intrusion detectors are well known, such as those shown in Fig.
There is something like the one shown in B. In the case of the one shown in Fig. 1A, the signal sending element a and the receiving element b are fixed inside the main body c, and the angle can be adjusted at the connection point d with the axis e, and the mounting part f is attached to the construction material. It is fixed to . In the case of the one shown in Fig. 1B, the signal transmitting element a' and the receiving element b' are rotatably secured to both ends of the main body e' having a rectangular front surface, and mounting holes g and g are provided in the central part m. 'An external connection terminal h, a display part j, and an adjustment part k are provided, and the whole is covered with a cover 1. In the conventional example shown in Fig. 1A, the main body c, the axis e for adjusting the angle, and the mounting part f are separated, and as the height dimension H becomes larger, the overall size becomes larger and more noticeable. It had some serious flaws. In addition, in the case of the one shown in Fig. 1B, the mounting holes g, g', external connection terminal h, display section j, and adjustment section k are housed in the central part m, so this central part can be used as a small space. If you try to downsize the device, the mounting holes will have to be provided in the empty space after placing the external connection terminal h, display section j, and adjustment section k.
For example, it has the disadvantage that it is extremely difficult to place it in a position where it can be attached to a switch box or an outlet box. Furthermore,
If the signal transmitting element and the receiving element are placed close together, the transmitted signal will directly enter the receiving element, reducing the sensitivity of the detector, so simply reducing the size would pose a problem in terms of performance.

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to transmit a signal by arranging the signal transmitting element and the receiving element diagonally of a housing whose front surface is approximately square. Increase the distance between the element and the receiving element, and fill the remaining space with mounting holes.
The purpose is to provide a compact detector by effectively utilizing space by arranging external connection terminals, and also to prevent direct transmission and reception of signals between the signal transmitting element and the receiving element. The purpose is to provide a detector with excellent performance despite its small size by providing a lid body to prevent a decrease in sensitivity. By arranging the mounting holes at the top and bottom ends, it can be attached to a support in the ceiling, a switchboard, etc.
The object is to obtain an integrated intrusion detector that can be easily installed in an outlet box.

The present invention will be explained in detail below based on examples.

In FIG. 2, A is a housing whose front surface is approximately square, and a container 1 is sandwiched between a first lid 15 and a back lid 18 with the container 1 in the center. The front surface of the body 15 is covered with a second lid body 33. The device body 1 includes a signal transmitting element 2 that transmits signals such as ultrasonic waves, light, and radio waves into the atmosphere, and a signal transmitted from the signal transmitting element 2 into the atmosphere, which is returned by an object and receives the returned signal. The receiving element 3 to receive the signal is fixed to both ends on the diagonal line p, and the printed board 4
Holes 8, 9, 10 from which external connection terminals 5, 5, 5..., indicator lamp 6, sensitivity adjustment volume 7, etc. protrude, and hole 17 for external connection wiring space
is provided at the upper left, and a positioning protrusion 12 for supporting the battery 11 is provided at the lower right, that is, in the direction of the diagonal line r,
The mounting holes 14, 14 and the screws 16 for tightening the first lid 15 are arranged on the center line q, and the first lid 1
5. It is a synthetic resin container body provided with stepped portions 19 and 20 into which the back cover body 18 fits. The signal sending element 2
When the signal is an ultrasonic wave, an electrostrictive element such as an element made of barium titanate is used, when the signal is light, an infrared light emitting diode is used, and when the signal is a radio wave, for example, a Gunn diode is used. The printed board 4 has the external connection terminals 5,
5..., an electronic component 21 that constitutes a display lamp 6, a sensitivity adjustment volume 7, a circuit for driving the signal sending element 2, a signal processing circuit for amplifying, detecting, level determining, etc. the output of the receiving element 3, etc. , 21... are also attached, and the mounting holes 14, 1 of the container body 1
Holes 22, 22 at positions corresponding to 4, back cover body 18
It is provided with holes 24, 24 through which wood screws 23, 23 for attaching it to the vessel body 1 pass. The back cover body 18
are mounting tarma holes 13, mounting screw through holes 25, 2
5' is provided on the center line q', and the external connection wire extraction hole 47 is provided at the upper left, and the wood screw through holes 26, 26 are provided.
Set up in a square. The example is the above-mentioned mounting hole 1.
3 and the through hole 25 are set to 83.5 mm to enable installation on a switch box.
The interval between the through hole 25' and the through hole 25' is set to 66.5 mm to enable attachment to an outlet box. The first lid body 13 is arranged such that the holes 27 and 28 through which the signal sending element 2 and the receiving element 3 pass are on the diagonal line p', and the hole 29 through which the indicator lamp 6 protrudes is in the center, and the battery 11,
The convex portions 30, 30 covering the external connection terminals 5, 5... are placed on another diagonal line r' that intersects the diagonal line p', and the partition wall 31 that partitions the signal transmitting element 2 and receiving element 3 is placed on the center line q''. A notch 32 with which the screw 16 for attaching the lid 15 engages, a protruding piece 34 of the second lid 33,
It is a synthetic resin molded body provided with holes 35, 35 into which 34 is fitted. When this first lid body 15 is attached to the container body 1, as shown in FIG.
is configured to protrude from the surface 15a of the lid 15. At this time, the signal sending surface 2a,
The height of the receiving surface 3a is lower than that of the partition wall 31. Further, as shown in FIGS. 2 and 3A, the indicator lamp 6 protrudes from the hole 29. However, the battery 11, external connection terminals 5, 5..., sensitivity adjustment volume 7, other indicator lamps 6, mounting holes 14, 14, screws 16, external connection wire wiring space hole 17, etc., which do not need to be visible from the outside, etc. It is designed to be hidden. The second lid body 33 is made of a material that allows signals sent into the atmosphere and signals that are reflected by objects and returns, and is made of a material whose interior cannot be seen with the naked eye. It is provided with protruding pieces 34, 34 that lock onto the front surface of one lid. This second lid body is, for example, a fine mesh wire mesh when the signal is an ultrasonic wave, and is, for example, a translucent acrylic resin plate when the signal is light or radio waves. This second lid body 33 does not need to be completely opaque, but only needs to be such that the inside cannot be seen from a distance that is conceivable in the state of use. If the signal is an ultrasonic wave and there is a concern that the inside will be visible if a wire mesh is used, use a third lid member 3 made of textile cloth or foamed urethane.
6 and the first and second lids.
4A to 4C are views showing the state in which the signal transmitting element 2 and the receiving element 3 are attached to the container body 1, and the signal transmitting element 2 and the receiving element 3 are fitted into a bowl-shaped body 37 that receives them. A notch 3 is provided on the side surface of this bowl-shaped body 37.
8, 38, and both end bent portions 39, 39 of the semicircular arc-shaped mounting spring 40 are engaged with these notches 38, 38. A central portion 41 of this semicircular arc-shaped mounting spring 40
The protruding piece 43 of the spring 42 engaged with the back side of the container body 1 is locked, the signal sending element 2 or the receiving element 3 is attracted in the X direction, and it is rotatably locked to the container body 1. . Note that the bowl-shaped body 37 has a hole 4 through which a terminal 44 of the signal transmitting element 2 or the receiving element 3 is passed.
5,45 are provided. The signal transmitting element 2 or the receiving element 3 fixed to the body 1 is rotated by sliding the semicircular arc-shaped mounting spring 40 and the protruding piece 43 of the spring 42 in the Y direction as shown in FIG. 4B. As shown in FIG. 4C, in the Z direction, the above-mentioned The signal sending element 2 and the receiving element 3 can adjust their directivity in a direction that combines the Y and Z directions. And the state with the first and second lids removed (the state shown in Figure 3 A)
The container body 1 is connected to the back cover body 18 with the mounting screws.
is fixed to the construction material, and after adjusting the pointing directions of the signal transmitting element 2 and receiving element 3, the first and second lids are attached.

When a power source is connected to the integrated intrusion detector, ultrasonic waves and
A signal such as light or power is transmitted, and the transmitted signal is reflected by an object and returns to the receiving element 3. When the transmitted signal is an ultrasonic wave, when a moving object enters the detection area, a signal with an advanced or delayed phase (called Doppler frequency) is generated depending on the phase of the transmitted signal, and this phase lead or lag is detected to detect the intrusion. If the transmitted signal is light, the reflected signal increases or decreases due to the intrusion of a moving object, and the intrusion is detected by detecting the amount of change in this increase or decrease.

By the way, the signal emitted from the signal sending element 2 is sent out with a certain spread. FIG. 7 shows the directivity when ultrasonic waves are used as the sending signal. The sound pressure level is on the vertical axis, and the horizontal axis is on the left and right with the center at zero degrees.
This is a diagram showing the directivity of sound with an angle of up to 180 degrees, and if the level when the sound pressure level is half the value is taken as zero, the result will be as shown in Figure 8. As is clear from FIG. 7, although the sound pressure level is low, it is emitted in all directions. Therefore, the larger the distance between the two elements 2 and 3, the less the signal that directly enters the receiving element 3 from the signal transmitting element 2. Therefore, in the case of a case whose front surface is approximately square, both elements 2 and 3 are placed on the diagonal line p as shown in FIG.
Comparing the case where both elements are provided on the center line q and the case where both elements are provided on the center line q, l ₃ = √ ² ₁ + ² ₁ > l ₁ , and the case where the elements are provided on the diagonal line p has the largest spacing, as described above. The probability that a signal directly enters the receiving element 3 from the signal transmitting element 2 is reduced. Next, when the first lid body is provided, as shown in FIGS. 9A to 9B, since the partition wall 31 exists, the amount of sound waves going around to the back side of the partition wall 31 is reduced, and the degree to which the transmitted signal is directly received is further reduced. Sensitivity is improved. Then, a mounting hole is provided at the upper and lower ends on the center line q, and this one side constitutes a substantially square vessel body, and both elements are provided at both ends on the diagonal line p, which is the longest dimension of the plane of this vessel body, Since the external connection terminals 5, 5, the display section 6, the sensitivity adjustment volume 7, and the battery 11 are provided near another diagonal line that intersects with the above diagonal line, the space can be used effectively. In addition, since the mounting holes are provided at the upper and lower ends of the center line q, it can be mounted on narrow materials, and if the distance between the Daruma hole 13 and the mounting hole 25 is 83.5 mm, the switch can be mounted as shown in Figure 10. It can also be attached to the box 46, and this attachment hole 13
If the distance between the mounting hole 25' and the mounting hole 25' is set to 66.5 mm, it can be mounted to an outlet box.

As described above, the present invention includes a signal transmitting element that transmits signals such as ultrasonic waves, light, and radio waves into the atmosphere, and a signal that is transmitted from the signal transmitting element into the atmosphere and receives a signal that returns after being reflected by an object. A receiver element is arranged diagonally within a housing having a substantially square front face, and a mounting hole and an external connection terminal are arranged on the remaining plane inside the housing having a substantially square front face. Since this is an intrusion detector, the signal transmitting element 2 and the receiving element 3 are attached to both ends on the diagonal line p of the vessel 1 whose front surface is approximately square, so that l ₃ =√ ² as shown in FIG. ₁ + ² ₂ > l ₁ ,
The distance between both elements 2 and 3 is increased compared to the case where they are installed at the upper and lower ends of the center line q of the vessel body, and the degree to which the transmitted signal is directly received by the receiving element 3 is reduced,
Deterioration of sensitivity can be prevented, and the center line q,
A mounting hole is provided at the upper and lower ends of q', and this hole is used as one side to construct a substantially square container 1, and both elements 2 and 3 are placed on the diagonal p of this container 1 on the other diagonal r. External connection terminals 5, 5, display section 6, battery 11
By arranging the holes, we were able to make it compact, and when installing it, we could easily attach it to the horizontal supports on the back of the ceiling.By matching the spacing of the mounting holes with the mounting screw pitch of switchboxes and outboxes, we were able to make it even more compact. This has the effect of simplifying the installation process. In addition, a signal transmitting element that transmits signals such as ultrasonic waves, light, and radio waves into the atmosphere, and a receiving element that receives signals sent back from the signal transmitting element into the atmosphere after being reflected by objects are shown on the front. is placed on the diagonal of the approximately square-shaped body, and the mounting holes and external connection terminals are placed on the remaining plane of the almost square-shaped body; is covered with a first lid body having a hole through which the signal transmitting element and the receiving element project, and a partition wall partitioning between the holes, the signal passes through the front surface of the first lid body, and the signal transmits the signal. Since the integrated intrusion detector is characterized in that the receiving element and the like are covered with a second lid made of a material that cannot be seen visually, the signal transmitting element 2 and the receiving element 3 are covered with the first lid 1.
A partition wall 31 protrudes from the through holes 27 and 28 of 5 and partitions the signal transmitting element 2 and the receiving element 3 in the center.
Since the signal transmitting element 2 is directly connected to the receiving element 3,
This reduces the possibility that signals will be incident on the sensor and prevents a decrease in sensitivity.

Further, in the present invention, since the signal transmitting element and the receiving element are arranged apart from each other on both ends of the diagonal line inside the container whose front surface is approximately square, the distance between the signal transmitting element and the receiving element is reduced at the front of the container. This has the advantage that it is possible to maximize the arrangement of the signal transmitting elements and the receiving elements, and to minimize mutual interference between the signal transmitting element and the receiving element. In addition, a partition wall is formed on the first lid that covers the front surface of the container to further reduce mutual interference between the signal transmitting element and the receiving element, so the partition wall is formed when assembling parts into the container. The assembly work is easy without getting in the way, and the first lid body,
Each function is appropriately distributed among the container body, printed circuit board, back cover, etc., and each of the above parts is configured separately.
A detector with excellent assembly is realized.

[Brief explanation of drawings]

FIGS. 1A and 1B are perspective views showing a conventional example of the integrated intrusion detector of the present invention. Figure 2 is an exploded perspective view of one embodiment of the present invention, Figure 3A is a plan view with the first lid removed, and Figure 3B is a sectional view at center lines q, q', q''. Figures 4A to 4C are views showing how the signal transmitting element 2 or receiving element 3 is attached to the vessel 1, Figure 4A is an exploded perspective view, and Figures 4B and 4C are cross-sectional views of the same. 5 is a diagram explaining the relationship between the positions and dimensions of both elements 2 and 3, FIG. 6 is a partial perspective view of the container body 1 with the first lid attached, and FIGS. 7 to 8 are A diagram showing the directivity of the sending signal of the ultrasonic sending element,
9A and 9B are diagrams showing the state of the sending signal when both elements 2 and 3 are attached to the housing 1, and FIG. 10 is an explanatory diagram showing the status when the housing A is attached to the switchbox. . A... Housing, 1... Body, 2... Signal sending element, 3...
Receiving element, 15...first lid, 18...back lid,
33...Second lid body.

Claims (1)

[Claims] 1. A container, a first lid that covers the surface of the container, a second lid that covers the surface of the first lid, and a back lid that covers the back of the container. It is a detector that has a rectangular shape as a whole, with a printed circuit board sandwiched between the body and the back cover, and the body transmits signals such as ultrasonic waves, light, and radio waves to the atmosphere. A signal transmitting element that transmits a signal into the atmosphere, and a receiving element that receives a signal that is reflected by an object and returned from this signal transmitting element into the atmosphere are placed diagonally apart from each other, and , mounting holes are provided at the upper and lower ends on the center line of the remaining plane inside the body, and holes from which the external connection terminal, the sensitivity adjustment volume, and the display element can protrude are formed in the other remaining plane; A protrusion is provided on the flat surface of the battery for easily fixing the battery, and the first lid is provided with holes at locations corresponding to the signal sending element, the receiving element, and the display element, and the hole of the signal sending element and the hole of the signal sending element are provided. a partition wall separating the hole from the receiving element; the second lid body is made of a material that allows the transmitting signal and the receiving signal to pass through and the signal transmitting element, the receiving element, etc. are not visible to the naked eye; and a printed circuit board. An integrated intrusion detector characterized by having an external connection terminal, a sensitivity adjustment volume, and a display element.