JPH02301298A - Remote monitor control system - Google Patents

Abstract

PURPOSE:To use a thermosensing sensor systematically and to attain utilization over a wide range by using the thermosensing sensor receiving a heat ray radiated from a human body and outputting a detection signal as a means inputting a signal to one of terminal equipments. CONSTITUTION:A thermosensing sensor A is connected to a terminal equipments 62, an output of the thermosensing sensor A is sent to a central controller 61 via the terminal equipment 62 to apply blink control to a lighting fixture when it is used, e.g. as the load with the central controller 61. When the load is the lighting fixture, since there is a case of desiring consecutive lighting or consecutive extinguishing regardless of visit of a person to a sensing area, a function able to set the mode such as automatic blink, dimmer lighting, consecutive blink and consecutive extinguishment is provided to the central controller 61 to satisfy the requirements. Thus, the thermosensing sensor is taken in the system via a terminal equipment to utilize the thermosensing sensor over a wide range.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to remote monitoring using a heat-sensitive sensor that is attached to a ceiling or wall and detects infrared rays emitted from a heat source such as a human body using a pyroelectric infrared sensor. It concerns control systems.

[Prior Art] This type of conventional heat-sensitive sensor directly controls a load, such as a lighting fixture, using a signal detected by a human body.

[Problems to be Solved by the Invention] Therefore, there was a problem that the heat-sensitive sensor could not be used systematically.

The present invention has been provided in view of the above-mentioned points, and an object of the present invention is to provide a remote monitoring and control system that can be used over a wide range of systems by systematically using heat-sensitive sensors.

[Means for Solving the Problems] The present invention provides a means for inputting a signal to one of the terminal devices.
It uses a heat-sensitive sensor that receives heat rays emitted from the human body and outputs a detection signal.

[Function] With the above configuration, the heat-sensitive sensor is utilized through one of the terminal devices, and the heat-sensitive sensor is incorporated into the system.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. Third
The figure shows a sectional view of the thermal sensor A, FIG. 4 shows a partially enlarged view, and FIG. 5 shows an exploded perspective view of the sensor section B. As shown in FIG. 5, the sensor section B is composed of a substantially cylindrical rotating frame 1, a lens 2 composed of twelve spherical Fresnel lenses, and a dome-shaped rotating frame 3. The lower surface of the rotating frame 1 has an opening 4 through which the lens 2 protrudes, and four protrusions 5 project from the upper peripheral end surface.

In addition, opposing protrusions 6 and 7 are protruded from the inner circumferential surface, and
One of the protrusions 6 has an ff 16a recessed in the vertical direction. Opposed protrusions 8 and 9 are integrally provided on the upper peripheral end surface of the lens 2, and one of the protrusions 8 has a rib 8a formed on its outer surface. A recess 10 is formed in the lower peripheral end surface of the rotary frame 3 in which a printed circuit board on which a pyroelectric element or the like is mounted is disposed.

Here, the rib 8 of the lens 2 is attached to the edge 6a of the protrusion 6 of the rotating frame 1.
After the lens 2 is placed into the rotary frame 1 with the lens 2 aligned, the protrusion 5 of the rotary frame 1 is press-fitted into the recess 10 of the rotary frame 3, thereby completing the sensor section B. At this time, the outer surface of the protrusion 9 of the lens 2 comes into contact with the inner surface of the protrusion 7 of the rotating frame l. In order to prevent the protrusions 8 and 9 of the lens 2 from protruding from the upper surface of the protrusions 6 and 7 of the rotary frame 1, they are pressed against the lower circumferential end surface of the rotary frame 3. Note that the groove 6a provided in the protrusion 6 may be provided in the protrusion 8 of the lens 2, and the rib 8a may be provided in the protrusion 6.

As shown in FIG. 3, a pyroelectric element 11 is installed inside the rotating frame 3.
A printed circuit board 12 on which components such as the like are mounted is fixed to a boss 14 with tapping screws 13. The sensor part B has a lens 2 part protruding from the opening 16 of the body 15, and
5, and the sensor part B is biased and placed by a presser metal fitting 18 which is fixed to the body 15 with a tapping screw 17. That is, the sensor part B is positioned on the body 15 by the presser metal fitting 18 and is rotatably mounted. A printed circuit board 19 for power supply control is fixed to the body 15 with tapping screws 20, and the printed circuit board 1 is inserted through the window hole 3a (FIG. 5) of the rotating frame 3 of the sensor section B.
A lead wire 21 from 2 is connected to the printed circuit board 19 by soldering, and a lead wire 22 from the printed circuit board 19 is further connected to a terminal portion 24 provided on the cover 23. The cover 23 is fixed to the body 15 with assembly screws 25.

The terminal portion 24 is composed of a terminal screw 24a and a terminal plate 24b. Insulating walls 26 are provided between the terminal screws 24a and on both sides.
are integrally formed, and a holding plate 27 is placed on top of the holding plate 27 for insulation. Further, a decorative plate 28 is attached to the lower surface of the body 15.

When heat rays enter the pyroelectric element 11 through the lens 2 protruding from the rotating frame 1 of the sensor section B, a detection output is obtained only when the amount of heat rays changes, and the lens 2
The detection range can be adjusted by 15 degrees in all directions. The detection output obtained when the hot wire is received is taken out to the outside from the terminal section 24 described above.

As shown in FIG. 8, a mounting bracket 2 is attached to the top surface of the cover 23.
9 are rotatably attached to the mounting bracket 29 , one end of a return spring 30 is engaged with the upper part of the mounting bracket 29 , and the other end of the return spring 30 is locked to the upper surface of the cover 23 . is biased in the direction of standing up. Further, the mounting bracket 29 has an elongated hole (not shown) through which a bolt 31 is inserted. As shown in FIG. 3, the bolt 3 is attached to the body 15.
An insertion hole 32 is drilled through which the bolt 3 is inserted.
1 is inserted through this insertion hole 32 and the long hole of the mounting bracket 29,
A nut 33 is screwed onto the tip of the bolt 31 as shown in FIG. This nut 33 has a rectangular shape, and its peripheral edge abuts against the mounting bracket 29 to prevent rotation.

As shown in FIG. 8, a mounting hole 35 is made in the ceiling material 34,
After inserting the upper part of the thermal sensor A into the mounting hole 35 with the bolt 31 loosened, tighten the bolt 31 to lower the mounting bracket 29 onto the top surface of the ceiling material 34 and attach the flange 15a of the body 15 to the ceiling material 34. The heat-sensitive sensor A is mounted by abutting against the lower surface of the ceiling material 34 and sandwiching the ceiling material 34 between the mounting bracket 29 and the flange 15a.

Next, the rotation mechanism of the senna section B will be explained. As shown in FIG. 6, FIG. 3, and FIG.
6 is positioned in a hole 37 drilled in the center piece 18a of the presser metal fitting 18. That is, by positioning the protrusion 36 in the hole 37, the rotation range (angle) of the sensor part B
It is a restriction. Further, holes 18b are bored on both sides of the presser metal fitting 18, through which the tapping screws 17 are inserted. The protrusion 38 protruding from the side of the rotating frame 3 is loosely fitted into a guide groove 39 formed in the body 15 to determine the position of the rotating frame 3. , the projection 38 is inserted along the guide groove 39 for positioning. Furthermore, a plurality of ring-shaped ribs 40 are provided around the protrusion 36 of the rotating frame 3 to protrude in the radial direction. This rib 40 produces a click action when the sensor section B is rotated along a vertical plane with respect to the body 15. Therefore, when setting the required area after installing the thermal sensor A, the click action function can be activated by operating the rotating frame 3.
By making the diameter of the hole 37 of the presser metal fitting 18 the same as the diameter of one location of the rib 40 of the rotating frame 3, centering can be performed. In addition, since it is a heat-sensitive sensor whose main purpose is to be mounted on the ceiling, it is compact and has a clean design.
Since it has a structure that allows it to rotate by 15 degrees in all directions, there are fewer restrictions on where it can be installed.

Next, the structure of the lens 2 and the pyroelectric element 11 of the sensor part B will be explained. In this embodiment, the pyroelectric element 11 is basically made of four elements, and the lens 2 for condensing infrared rays is a dome-shaped lens with less aberration. It uses a Fresnel lens. The lens 2 is made of, for example, a synthetic resin (for example, high-density polyethylene) through which heat rays can easily pass through, and the pyroelectric element 11 as an infrared sensor is arranged near the center of the lens 2 as a spherical body. . Therefore, since the pyroelectric element 11 does not come into contact with the outside airflow, the pyroelectric element 11 can detect without error even if there is a difference in temperature distribution due to turbulence in the outside airflow.

As shown in FIG. 5, the lens 2 has 12 lens parts 2a.
, 2b, and the optical axis of each lens portion 2a, 2b is set radially with the pyroelectric element 11 as the center. Here, the uneven surface of the lens 2 is formed on the inner circumferential surface side to reduce reflection on the outer circumferential surface and prevent a decrease in transmission efficiency. Further, the lens portions 2a and 2b are formed around the intersection of the lens 2 and the normal line set at the center of the light receiving surface of the pyroelectric element 11 as the center. That is, the lens parts 2a and 2b are divided into four lens parts 2a, which are divided at 90° intervals in the circumferential direction near the center.
and eight lens parts 2b divided at 45° intervals on the outer periphery of the lens part 2a.

As shown in 10'1(a), the pyroelectric element 11 is TO-
Four pieces are arranged in a 5-inch package 41, as shown in the same figure (b).
), four pyroelectric elements 11 are connected in series with their polarities reversed to apply power. Further, the polarities shown in parentheses may be used for connection. Same figure (
e) is X in (a) of the same figure.

It shows the viewing angle on the Y axis.

In this way, the four pyroelectric elements 11 and the lens 2 are divided into 12 parts.
By combining these, 48 detection areas are set. 1°1 and 12 are thermal sensor A
The figure shows the case where the sensor is attached to a ceiling surface, and the marks E in the figure indicate the detection areas of each lens portion 2a and 2b. 1st
Figure 3 shows a case where there are two pyroelectric elements 11, and the 11th
In the case shown in the figure, the detection area is wider (dotted chain line in the figure)
can be ensured. Figure 14 shows this thermal sensor A.
This is a diagram showing the detection area where the ceiling height is 3.5 m.
In this case, the detection area is 4.9 m in diameter on the floor, and if the height of the desk is 70 cm, the detection area is 3.9 m in diameter. Moreover, since the lens 2 is divided into a plurality of parts, each lens part 2a.

2b, it can be divided into a plurality of detection areas, and even if the amount of movement of the heat source is small, it can be detected. Therefore, for example, when this thermal sensor A is installed in a conference room, it has a function of detecting the movement of a hand on a desk, and can have characteristics closer to presence detection. Furthermore, by changing the number of divisions of the lens 2, it is possible to correspond to various detection areas.

FIG. 1 shows a schematic configuration of a remote monitoring and control system using the heat-sensitive sensor A described above.

A central control device 61 and a plurality of monitoring terminals 62, control terminals 63, wireless relay terminals 67, external interface terminals 68, and pattern setting terminals 69 each have a pair of signals. The transmission signal Vs, which is connected to the signal line 64 from the central control unit 61 and sent to the signal line 64, includes a start pulse signal ST indicating the start of signal transmission, and a signal mode. Mode data signal MD shown, terminal device 62, 63.67
Address data signal AD transmitting 8-bit address data calling ~69, control data signal CD transmitting control data controlling load, ~L, checksum data signal C8, and terminal device 62.63.67~ This is a bipolar (±24V) time-division multiplexed signal consisting of a return standby signal WT that sets a return period from 69, and data is transmitted by pulse width modulation. In each terminal device 62, 63, 67 to 69, when the address data of the transmission signal Vs received via the signal line 64 matches its own unique address data, it takes in the control data of the transmission signal ■S, and The monitoring data signal is returned as a current mode signal (a signal sent by short-circuiting the signal lines 64 via an appropriate low impedance) in synchronization with the return standby signal WT of the transmission signal Vs. The central control device 61 also includes a dummy signal transmitting means that always sends out a dummy transmission signal with the mode data signal MD in a dummy mode, and either a monitoring terminal 62 or a wireless relay terminal 67, or an external interface terminal. 68. When the interrupt signal Vi as shown in FIG. 2(b) returned from the pattern setting terminal 69 is received, the interrupt generating terminal 62.7 to 9 is detected and the terminal 62.67 - 69 to return monitoring data. The central control device 61 also uses the monitoring data sent back to the central control device 61 from the monitoring terminal 62 or the wireless relay terminal 67, the external interface terminal 68, and the pattern setting terminal 69 as described above. Creates control data to be transmitted to the control terminal 63 that controls the corresponding loads 1 to L4, and transmits the control data to the signal line 6.
The control terminal 63 is time-division multiplexed and loaded via the control terminal 63 to control the control terminal 63.

The wireless relay terminal 67 includes an optical wireless transmitter Y,
It is a terminal device that relays data in an optical wireless system consisting of an optical wireless receiver X and a wireless signal line 70, and the optical wireless receiver This data is received via the wireless signal line 70 and transferred to the central control unit 61. Further, the external interface terminal device 68 is a terminal device that performs data transmission with the external control device 61, and the pattern setting terminal device 69 transmits pattern control data input from the data input section 69a to the central control device 61. This is the terminal device for the transfer. The monitoring terminal 62 and the control terminal 63 installed in the distribution board 66 or the relay control panel 66a have the dimensions agreed upon in the distribution board, and their control output enables the remote control relay for load control. (A latching relay that can be turned on and off using a hand switch) 5 is in turn to be controlled.

When the heat-sensitive sensor A is connected to the terminal device 62, the output of the heat-sensitive sensor A is transmitted to the central control device 61 via the terminal device 62, and the load is set as a lighting device by the central control device 61, the lighting device I'm trying to control the flashing. If the load is a lighting device, you may want to turn it on or off continuously regardless of whether people enter or exit the detection area. The central control device 61 is provided with a function to set modes such as continuous blinking and continuous turning off.

[Effects of the Invention] As described above, the present invention uses a heat-sensitive sensor that receives heat rays emitted from a human body and outputs a detection signal as a means for inputting a signal to one of the terminal devices. , the heat-sensitive sensor can be incorporated into the system via the terminal device, and the heat-sensitive sensor can be used in a wide range of areas.

Therefore, for example, when the load is a lighting fixture, the central control device can turn the load on, off, dimming, etc. in response to a signal from a heat-sensitive sensor, creating a more amenity-friendly presentation. It is possible.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a remote monitoring and control system according to an embodiment of the present invention, and FIG. 2 is a diagram showing the format of the same transmission signal.
FIG. 3 is a sectional view of the heat-sensitive sensor same as above, FIG. 4 is a partially enlarged sectional view of same as above, and FIG.
Fig. 6 is an exploded perspective view of the main parts of the same as above, Fig. 7 (1) (b) is a broken bottom view and plan view of the same as above, Fig. 8 is a sectional view showing the same as above in the installed state, Fig. 9 is same as above. Bottom view of Figure 10 (a
) to (c) are layout diagrams, connection diagrams, and explanatory diagrams showing the configuration of the pyroelectric element same as above, and FIGS. 11 to 14 are explanatory diagrams showing the detection area of same as above, respectively. 61 is a central control unit, 62 and 63 are terminal devices, 64 is a signal line, and A is a heat-sensitive sensor. Agent Patent Attorney Ishi 1) Chief 7 Figure 4 Figure 5 Figure 6 Figure 7 Figure 7 (b) Figure 8 Figure 9 Figure 10 (b) (C) Figure 11 Figure 13 Figure 14 Voluntary writing of figure procedure correction)

Claims (1)

[Claims] (1) A plurality of terminal devices each having a unique address are connected to the central control device via signal lines, and the central control device sends address data, control data, and signals from the terminal devices back to the central control device. A transmission signal consisting of a return signal period, etc. is transmitted in a time-division manner to each terminal device, each terminal device receives the transmission signal, and the terminal device whose address matches its own takes in the control data following the address data and controls the load. The signal input to the terminal from the outside is returned to the central control unit within the above-mentioned return signal period, and the central control unit transmits the signal to other terminals based on the signal from the terminal to reduce the load. The remote monitoring and control system is characterized in that a heat-sensitive sensor that receives heat rays emitted from a human body and outputs a detection signal is used as a means for inputting a signal to one of the terminal devices. Remote monitoring and control system.