JP3531092B2 - Elevating type sensing device and test system for the sensing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting type sensing device and a sensing device testing system thereof. More specifically,
According to the present invention, a sensor attached at a high place can be lowered by its own weight for inspection and the like, and when it is raised and reaches the installation position, the sensor is easily connected to an alarm circuit. The present invention relates to a lifting type sensing device. Further, according to the present invention, the elevating type sensing device in the lowered and lowered position is tested by the test unit, and the test result is wirelessly sent from the test unit to the ceiling side installation unit, and the test is performed on the ceiling side installation unit side. The present invention relates to a test system for a lifting type sensing device which transmits a result to an alarm circuit.

[0002]

2. Description of the Related Art This type of elevating type detecting device detects a fire by connecting a fire detector and a ceiling installation portion with a wire or a signal cable, and winding or unwinding the wire or the signal cable with a winding mechanism. The vessel can be moved up and down. Then, at the time of caution, the wire or signal cable is taken up by the take-up mechanism and the detector is placed on the ceiling, while when conducting the test, the wire or signal cable is taken out from the take-up mechanism,
The sensor is lowered and stopped at the test position so that the sensor can be tested and inspected.

The reason for adopting such a structure is as follows. First of all, regularly (once every 6 months)
It is obligatory to inspect the sensor, and it is desired to make it easy to inspect. Second, if the sensor is installed at a high place such as a gymnasium or arena (exhibition hall), it is usually a catwalk (narrow passage).
It is designed to make it easier to carry out inspections by providing a check port, etc., but when such equipment is not in place, use a long ladder on a specified place to climb the ladder or perform a long inspection. Since the inspection is performed using a rod, dangerous work must be performed, and since accidents occur during the work, it is necessary to make inspection work easy and safe. There is a desire.

Many of such conventional lifting type sensing devices have been proposed in which a winding mechanism is installed on the ceiling side and a wire or a signal cable is wound or unwound by the winding mechanism [actually opened]. Microfilm of Sho 60-7648 (Practical Application Sho 58-164,572),
A microfilm of Japanese Utility Model Laid-Open No. 3-66484 (Japanese Patent Application No. 1-126446), see JP-A-6-309575].

Although the detector is not moved up and down, a conventional device in which the abnormality generating means is brought close to the detector [Shokai 60-95687 (Sho 58-185).
No. 864) microfilm], a conventional device for lowering a warning light [see microfilm of Japanese Utility Model Laid-Open No. 5-87685 (Japanese Patent Application No. 3-44534)].
Is proposed. These conventional devices are also of a type in which a winding mechanism or the like is installed on the ceiling side.

[0006]

However, the above-mentioned conventional lifting type sensing device has the following drawbacks. (1) For example, when lowering the sensor, the motor is rotated to feed out the wire or the like from the winding mechanism, but the sensor does not descend, or a control circuit for each sensor is required to lower the sensor individually. , Or the sensor could not be attached or detached, and it was not functionally sufficient. (2) The structure of the lifting mechanism and the control circuit for controlling the driving of the lifting mechanism are complicated, the number of parts used is large, and the price is high. (3) Since the signal line is rolled up or unwound, the signal line needs to be long, and there is a risk of metal fatigue of the signal line, which is a problem in reliability. Therefore, a first object of the present invention is to solve the drawbacks of the conventional device, and to provide a lifting type sensing device having a simple structure, functionally sufficient, and improved reliability.

A second object of the present invention is to provide a test system for an up-and-down type sensing device which can easily and surely test the sensor.

[0008]

In order to achieve the above-mentioned first object, a lifting type sensing device according to a first aspect of the present invention has a sensor mounted at a high place and lifts the sensor. In the enabled lifting type sensing device, the sensor mounting base to which the sensor is detachable can be moved, and the sensor mounting base and the ceiling side installation portion are connected only by a wire. Equipped with an elevating mechanism that winds the wire up or drops it by its own weight and a connector that is connected to the sensor, and connects to the latch mechanism and the alarm circuit that locks the sensor mounting base on the ceiling side installation part Is provided, and when the sensor mounting base is locked to the ceiling side installation section by a latch mechanism, the sensor installation base side connector and the ceiling side installation section connector are connected. It is characterized in that it has a configuration.

According to a second aspect of the invention, in the lifting type sensing device according to the first aspect, the sensor mounting base is
The sensor mount is equipped with a sensor that can be attached to and detached from the sensor mount, a connector that is connected to the sensor via the sensor mount, and a lifting mechanism that raises and lowers the base by winding the wire or dropping it by its own weight. It is characterized by that.

According to a third aspect of the invention, in the elevating type sensing device according to the first aspect, the ceiling-side installation section attaches the pulley for guiding the wire and the base when the sensor mounting base is locked. A latch mechanism that prevents the device from falling, a latch release mechanism that releases the latching action of this latch mechanism, and a judgment as to whether it is a latch release signal or a sensor output signal when the received wireless signal is the address addressed to the device. To the latch release mechanism side when the base is locked by the latch mechanism, or to the alarm circuit side when the base is lowered, to the output terminal of the reception wireless unit. And a connector connected to an alarm circuit for transmitting a detection signal of the sensor.

According to a fourth aspect of the invention, in the lifting type sensing device according to the first aspect, the ceiling side installation portion is a feed wiring via a connector.

According to a fifth aspect of the present invention, in the elevating / lowering type sensing device according to the first aspect, the receiving radio unit includes first means for determining whether an address of a received signal is an address given to itself. And a second means for determining the type of the signal by the protocol when the address of the received signal is the address given to itself.

According to a sixth aspect of the invention, in the elevating / lowering sensing device according to the fourth aspect, the first means is a decoder for converting a received signal, an address setting circuit provided to itself, and a decoder. It is characterized in that it comprises a comparison circuit for comparing the received signal from the self-address from the address setting circuit.

According to a seventh aspect of the invention, in the elevating type sensing device according to the fourth aspect, the second means is a protocol setting circuit capable of setting a protocol, and when a received signal matches a self address, It is characterized by comprising a judging circuit for judging the type of the signal by judging the received signal and the protocol from the protocol setting circuit.

In order to achieve the above-mentioned second object, the test system for an elevating type sensing device according to the invention as defined in claim 8 comprises:
The alarm circuit and the sensor are connected through the connectors, and when the wireless down command is received, the wire is paid out by its own weight, the connectors are disengaged from each other, and the sensor mounting base goes down. Type wireless communication device connected to the receiving wireless unit and the latch release mechanism side of the ceiling side installation part of the type sensing device through a test switch, and a power line circuit that supplies power to these devices when the test switch is closed, and the receiving wireless unit. It is possible to set the address given to the alarm circuit that transmits the test result of the sensor sent from the sensor and the sensor mounting base of the lifting type sensor to be tested. Wireless down command can be output and the lowered sensor mounting base sensor is tested, and the test result of that sensor is wirelessly tested. It is obtained by a sensor test unit which can be output as a degree.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 7 are diagrams for explaining an elevating type sensing device according to a preferred embodiment of the present invention. Here, FIG. 1 shows a lift-type sensing device according to a preferred embodiment of the present invention, and is a view showing a state in which a sensor mounting base is housed in a ceiling side installation portion. Figure 2
It is a figure showing the above-mentioned lifting type sensing device, and the state where a sensor mounting base was hung from a ceiling side installation part via a wire. FIG. 3 is a diagram showing a schematic configuration of the sensor mounting base and the elevating means provided on the ceiling side installation portion. Further, FIG. 4 is a diagram showing a latch mechanism provided in the ceiling side installation portion.

In these figures, the lifting type sensing device 1
Is roughly divided into a ceiling side installation part 3 attached to a ceiling part 2 at a high place and a sensor installation base 5 to which a fire sensor 4 is detachably attached. The ceiling side installation part 3 and the sensor installation It has a structure in which the base 5 and the base 5 are connected only by the wire 6.

The ceiling-side installation section 3 has an outer box 7 having a cylindrical outer shape with a bottom, and a peripheral edge 8 of the cylindrical outer box 7 is fixed to the ceiling section 2 with a screw 9 on the back surface of the ceiling section 2. It is fixed by that. In addition, it is necessary to form a through hole 10 having a predetermined diameter D in a portion of the ceiling portion 2 where the ceiling side installation portion 3 is provided.

Inside the outer box 7 of the ceiling side installation section 3,
The inner box 11 is installed by aligning the central axis of the cylindrical inner box 11 with the central axis of the cylindrical outer box 7. Inside the inner box 11, a latch mechanism 12 for locking the sensor mounting base 5, a latch release mechanism 13 for releasing the latching action of the latch mechanism 12, and an alarm circuit or an electric power circuit are connected. It has a built-in circuit board 14 on which the necessary electric circuits are mounted, and a connector 15 electrically connected to the alarm circuit via the circuit board 14.

Inside the outer case 7 and outside the inner case 11, the receiving radio unit 17 is provided on one surface of the tip of the L-shaped mounting plate 16 and the other surface of the tip of the mounting plate 16. A limit switch 18 is attached. The reception wireless unit 17 and the limit switch 18 are electrically connected to the circuit board 14. The reception wireless unit 17 receives a descending command and a test result from a test unit to be described later and operates the latch release mechanism 13 via the circuit board 14 or sends the test result to an alarm circuit. . The limit switch 18 connects the output terminal of the reception wireless unit 17 to the latch release mechanism 13 when the sensor mounting base 5 is locked by the latch mechanism 12, and detects that the sensor mounting base 5 is lowered. The output terminal of the reception wireless unit 17 is connected to the alarm circuit via the circuit board 14.

The sensor mounting base 5 is roughly divided into a disk-shaped substrate 21 provided with a window 20 at a position where the reception wireless unit 17 is installed, and a locking box provided above the substrate 21 in the figure. 22 and a sensor mount 23 provided below the substrate 21 in the figure. The fire detector 4 can be attached to and detached from the detector mount 23. A connector 19 is provided on the upper side inside the locking box 22. This connector 19 is connected to the connection fitting of the detector mount 23, and when the fire detector 4 is attached to the detector mount 23, the connector 19
Will be electrically connected to the fire detector 4 via the connection fitting. In addition, when the sensor mounting base 5 is locked to the ceiling-side installation portion 3, the connector 19 of the sensor mounting base 5 is completely electrically connected to the connector 15 of the ceiling-side installation portion 3.

A cylindrical locking box 22 having an inner diameter slightly larger than the outer circumference of the cylindrical inner box 11 of the ceiling side installation portion 3 is fixed on the base plate 21. As shown in FIG. 4, an inner peripheral edge of the locking box 22 has a gentle curve shape from the outer side to the inner side, and the lower side of the curve has a horizontal shape shown in the drawing. Piece 24
Is provided.

An elevating mechanism 25 is provided inside the locking box 22 of the substrate 21. This lifting mechanism 25
Is a reel 26 that winds or unwinds the wire 6, a speed reduction mechanism 27 to which the reel 26 is attached, a motor 28 that drives the speed reduction mechanism 27, a battery 29 that powers the motor 28, and a lift command switch 30. A limit switch 31 for detecting the latching, and a control circuit 32 for energizing the motor 28 in response to a command from the rising command switch 30 and stopping energization of the motor 28 in response to a detection signal from the limit switch 31.

The wire 6 wound or unwound on the reel 26 is passed through the pulley 33 provided on the sensor mounting base 5 as shown in FIG.
After passing through the two pulleys 34 and 35 provided inside 1, the fixing piece 36 of the substrate 21 is fixed. The lifting mechanism 25, the pulleys 33, 34 and 35, and the wire 6 constitute lifting means.

Next, the details of the latch mechanism 12 and the latch release mechanism 13 provided on the ceiling side installation portion 3 will be described with reference mainly to FIG.

The latch mechanism 12 basically comprises three latch locking pieces 41, 41, 41 and is constructed as follows. The three latch locking pieces 41, 41, 41 are arranged 120 degrees apart from each other about the central axis of the inner box 11. The latch locking piece 41 is rotatably fixed to a fixing piece 43 provided on the bottom plate 42 of the inner box 11. Since the latch locking pieces 41, 41, 41 have the same structure, one of them will be described as a representative. The latch locking piece 41 is formed by the spring 4
4 is always urged in the direction of the arrow shown. The outer side of the tip of the latch locking piece 41 has a gentle curve shape from the inner side to the outer side, and the upper side of the curved shape has a horizontal shape in the figure. This latch locking piece 4
A through hole 45 is formed at the position of the inner box 11 so that the outer side of the front end of 1 projects to the outer periphery of the inner box 11, whereby the outer side of the tip of the latch engaging piece 41 of the inner box 11 is formed. It projects from the outer circumference. Further, the locking pieces 24 provided on the inner periphery of the upper end of the locking box 22 in the drawing are the latch locking pieces 41, 41, 4
It is locked to the outer side of the tip of the No. 1.

The latch release mechanism 13 comprises a solenoid 48 fixed to the bottom plate 42, an electromagnetic piece 49 that moves in the solenoid 48 with a predetermined stroke when electric power is applied to the solenoid 48, and a stopper 50 of the electromagnetic piece 49. . Further, the electromagnetic piece 49 is connected to the tip end side of the latch locking piece 41 via a connecting wire 51. This solenoid 4
When electric power is supplied to 8, the electromagnetic piece 49 moves to the upper side in the drawing, and the connecting wire 51 moves the latch locking piece 41, so that the latch locking piece 41 moves to the locking box of the sensor mounting base 5. It will be disengaged from the locking piece 24 of 22. Also, the reception wireless unit 17 and the limit switch 1
8 and the solenoid 48 are electrically connected to the circuit board 14.

FIG. 5 is a circuit diagram showing an electric circuit of the lifting type sensing device. In FIG. 5, the + line 55 of the power line is connected to the terminals Bj and Bk. The ground line 56 of the power line is connected to the terminals Ej and Ek.
The + side line 55 is connected to the + power supply terminal of the reception wireless unit 17, and the ground line 56 is connected to the − of the reception wireless unit 17.
Each is electrically connected to the power supply terminal. Also,
The + side line 55 is the solenoid 4 of the latch release mechanism 13.
8, the limit switch 18 is connected to one end Pp of the output terminal of the reception wireless unit 17 through one terminal.

The signal transmission line 58j of the alarm circuit 57 has an external connection terminal Lj and one end Pp of the output terminal of the reception wireless unit 17 via the other terminal of the limit switch 18,
It is electrically connected to the terminals Tj of the connector 15, respectively. The signal transmission line 59j of the alarm circuit 57 includes an external connection terminal Lej and the other end P of the output terminal of the reception wireless unit 17.
e and the terminal Tej of the connector 15 are electrically connected. The signal transmission line 58k is connected to the external connection terminal Lk.
And a terminal Tk of the connector 15 are electrically connected. The signal transmission line 59k is connected to the external connection terminal Lek.
And a terminal Tek of the connector 15 are electrically connected.

The terminal Tj of the connector 19 provided inside the sensor mounting base 5 is a connecting metal fitting Kj of the sensor mounting base 23.
The terminal Tk is electrically connected to the connection fitting Kk, the terminal Tej is electrically connected to the connection fitting Kej, and the terminal Tek is electrically connected to the connection fitting Kek. The connection fittings Kj and Kk and the connection fittings Kej and Kek are short-circuited when the fire detector 4 is connected to the detector mount 23.

FIG. 6 is a block diagram showing an example of the configuration of the reception wireless unit 17 used in the elevating type sensing device. In FIG. 6, the reception wireless unit 17 includes, for example, a light receiving diode 171 as a light receiving element, a resistor 172 that converts the output of the light receiving diode 171 into a voltage signal, an amplifier circuit 173 that amplifies this voltage signal, and this amplifier circuit. A detection circuit 174 for detecting the output signal of 173, a waveform shaping circuit 175 for slicing the signal from the detection circuit 174 to shape the waveform, and a decoder 176 for converting the output signal from the waveform shaping circuit 175 into a predetermined signal. , Address setting circuit 177 for setting an address unique to the device
And a comparison circuit 178 for detecting a match of addresses, and protocol setting circuits 179, 180 for specifying the contents of signals.
Determination circuits 181, 182 for specifying the signal contents, output circuits 183, 184 for outputting signals according to the output signals from the determination circuits 181, 182, and a controller 185 for controlling the operation of each circuit. I have it.

The cathode of the light receiving element 171 has a power source Vcc.
Is connected to the ground line via a resistor 172. This light receiving element 171
Converts a wireless signal (infrared ray) of an operation command or a test result emitted from the sensor test unit 61 into an electric command signal and gives it to the resistor 172. The resistor 172 converts the signal into a voltage signal. The connection point between the anode of the light receiving element 171 and the resistor 172 is connected to the input terminal of the amplifier circuit 173, and the voltage signal corresponding to the command signal generated in the resistor 172 is supplied to the amplifier circuit 173. The amplifier circuit 173 amplifies the input command signal voltage to a predetermined level. The output terminal of the amplifier circuit 173 is connected to the input terminal of the detection circuit 174, and supplies the amplified command signal voltage to the detection circuit 174. The detection circuit 174 extracts a command signal from the input command signal voltage. The output terminal of the detection circuit 174 is connected to the input terminal of the waveform shaping circuit 175, and the detected command signal is applied to the waveform shaping circuit 175.
Supply to. The waveform shaping circuit 175 slices the input command signal and test result signal at a constant level to shape the waveform. The output terminal of the waveform shaping circuit 176 is the decoder 1
It is connected to 76 and converts the signal into predetermined data. The data converted by the decoder 176 and the address from the address setting circuit 177 are compared with each other by the comparison circuit 17
8 are compared. When the addresses match in the comparison circuit 178, signals are supplied to the determination circuits 181 and 182.
The determination circuit 181 compares the protocol from the protocol setting circuit 179 with the protocol of the signal, and sends the signal having the matched protocol to the output circuit 183. Judgment circuit 18
In step 2, the protocol from the protocol setting circuit 180 is compared with the protocol of the signal, and the signal having the matched protocol is sent to the output circuit 184. A drop command signal is output from the output terminal of the output circuit 183, and a test result signal is output from the output terminal of the output circuit 184. In this embodiment, these output signals are output. The terminals are wired or connected to form output terminals Pp and Pe.

FIG. 7 is an explanatory diagram showing the format of a signal received by the receiving radio unit 17. FIG. 7A shows an example of the descending command signal 100. The descending command signal 100 includes a synchronization unit 101, an address 102, a signal discrimination protocol 103, a signal 104, and a synchronization unit 105. In FIG. 7B, the sensor test result signal 20
An example of 0 is shown. The sensor test result signal 200 is
Synchronization unit 201, address 202, signal discrimination protocol 2
03, a signal 204, and a synchronization unit 205.

The descending command signal 100 and the sensor test result signal 200 are sent from the sensor test unit 61 as serial radio signals. These signals 100, 20
0 is wirelessly transmitted to the reception wireless unit 17.

8 to 10 show a sensor test unit 61. FIG. 8 shows a sensor test unit 6 used in the test system for the lifting type sensor according to the present invention.
It is a front view showing 1. FIG. 9 is a side view showing the sensor test unit 61.

In these figures, the sensor test unit 61 is constructed as follows. A test unit 63, a limit switch, and a power supply are built in a housing 62 having a predetermined rectangular outer shape. Further, on the front surface of the housing 62, an operation switch 64 for inputting a descending command and turning on a power source is provided. Further, the housing 62
On the upper surface of the transmission wireless unit 65, although not shown,
A display and a numeric keypad are provided. The transmission wireless unit 65 can send the signals 100 and 200 shown in FIG. The transmission wireless unit 65 includes a cable 66.
The test connector 67 is electrically connected via the keypad, the numeric keypad, the display, and the operation switch 6
4, others are connected.

FIG. 10 is a block diagram showing an example of an electric circuit of the sensor test unit 61. In this FIG.
The sensor test unit 61 includes an operation switch 64, a transmission wireless unit 65, a test connector 67, a ten-key pad 68, and a display 69, and is configured as follows.

The transmission wireless unit 65 is the controller 6
51, the power amplifier circuit 652, and the light emitting elements 653 and 65.
4 and. The controller 651 is composed of, for example, a microcomputer, and the microcomputer includes an arithmetic processing unit, a ROM, a RAM, an input / output interface, and a bus line connecting these. The numeric keypad 68 and the operation switch 64 are connected to the input interface of the controller 651, and the test connector 67 is connected via the cable 66. The RAM is a work memory of the arithmetic processing unit, and the ROM stores a program for operating the sensor test unit 61. In addition, the controller 61
The display 69 and the power amplifier circuit 652 are connected to the output interface 1 of FIG. Light emitting elements 653 and 654 are connected to the output terminals of the power amplification circuit 652.

In this sensor test unit 61, when an address is set from the ten-key pad 68, the address is displayed on the display 69. When the address displayed on the display 69 is the target address, the down command is input by pressing the down command switch of the operation switch 64. Accordingly, the light emitting element 65 of the transmission wireless unit 65 of the sensor test unit 61
3 and 654, the descending command signal 100 having the signal format shown in FIG.

The tester connector 67 of the sensor test unit 61 is connected to the connector 19 of the sensor mounting base 5 which has descended to the stop position, and the sensor test unit 61 is connected.
When the fire detector 4 is tested by the test unit 63 of, the result is input to the controller 651 of the transmission wireless unit 65, and from the light emitting elements 653 and 654 of the transmission wireless unit 65, the signal format shown in FIG. Sensor test result signal 2
00 will be output.

FIG. 11 is a circuit diagram showing a test system of the lifting type sensing device. In FIG. 11, the test system for the lifting type sensing device includes an alarm circuit 57 and a fire detector 4
Are connected via the connectors 15 and 19, and when the descending command signal 100 is received, the wire 6 is unwound by its own weight, the connector 15 and the connector 19 are disengaged from each other, and the sensor mounting base 5 descends. Device 1 _-1,
..., 1 and _N, the elevating sensing device 1 _-1, ..., 1 reception radio unit of _N ceiling-side mounting portion 3 of the 17 and latch release mechanism 1
It is connected to the 3 side through the test switch S1 and
These devices 13, 17 when the test switch S1 is closed
Power line circuit 54 for supplying electric power to the fire alarm unit 57, an alarm circuit 57 for transmitting the test result of the fire detector 4 sent from the receiving wireless unit 17, and a sensor mounting of the lifting type sensing device 1 _-N to be tested. it is possible to set addresses assigned to the base 5 _-N, can output a radio descent command to sensor mounting base 5 _-N of the address, and the lowered sensor mounting base 5 _-N fire detector 4 _-N is tested and the test result of the fire detector 4- _N is output as a sensor test result signal 200.

Each of the ceiling side installation parts 3 _-1 , ..., 3 _-N has a terminal Bj of the ceiling side installation part 3 _-N-1 and a terminal Bk of the ceiling side installation part 3 _-N .
Is connected by a line 55p, and the terminal Ej of the ceiling _- side installation section 3- _N-1 and the terminal Ek of the ceiling-side installation section 3- _N are connected by a line 56m. Similarly, each ceiling side installation part 3 _-1 , ..., 3
_-N indicates the terminal Lj of the ceiling side installation unit 3 _-N-1 and the ceiling side installation unit 3
The terminal Lk of _-N is connected by a line 58p, and the terminal Lej of the ceiling side installation section 3- _N-1 and the terminal Lek of the well side installation section 3- _N are connected by a line 59m.

In this embodiment, the sensor mounting base 5 _-N is currently descending, and another sensor mounting base 5 _-N
-1, ..., 5- _N-1 are latched to the ceiling side installation section _3-1, ..., 3- _N-1 . Also, the test connector 67 of the detector test unit 61 is connected to the connector 19 of the ceiling side installation section 3, and this connector 19 can supply the information of the fire detector 4 to the transmission wireless unit 65 via the cable 66. It is like this. The operation of the test system for the lifting type sensing device having such a configuration will be described with reference to FIGS.
And FIG. 13 will be described. Here, FIG. 12 is a diagram for explaining the operations of lowering, inspecting, and ascending the sensor mounting base 5. FIG. 13 is a flowchart for explaining the operation of the device.

When it is necessary to inspect the fire detectors _4-1 , ..., 4- _N (step 301; YES), first, the test switch S1 is closed (step 302). Then, DC power is applied to the lines 55p and 56m. Accordingly, the ceiling-side mounting section 3 _-1, ..., 3 reception _-N radio unit 17 _-1, ..., and 17 _-N, latch release mechanism 13 _-1, ..., 1
Power is supplied to 3- _N to enable operation.

Here, it is judged whether or not the fire detector 4 to be tested exists (step 303). If the fire detector 4 to be tested is present (step 303; YE
S), enter a predetermined address from the ten-key pad 68, and when the address displayed on the display 69 is that of the fire detector 4 to be inspected, the operation switch 6 for lowering command
Press 4 (step 304). As a result, from the transmission wireless unit 65 of the sensor test unit 61,
The descending command signal 100 in the signal format shown in (a) is sent to the ceiling side installation section 3- _N (see FIG. 12 (a)). In this case, if the address is N, the ceiling side installation unit 3
_The sensor test unit 61 outputs the descending command signal 100 in the signal format shown in FIG. That is,
The descending command signal 100 includes the synchronizing unit 101 and the address 10.
2, protocol 103, falling signal 104, synchronization unit 105
It has a signal format consisting of
0 is transmitted from the transmission radio unit 65 of the sensor test unit 61.

As a result, the receiving radio unit 17 _-N of the ceiling side installation section 3- _N turns on the output terminal Pp of the receiving radio unit 17 _-N when the descending command signal 100 is received and the addresses match. To This allows the line 55,
A current flows through the path of the solenoid 48 of the latch release mechanism 13, one electrode of the limit switch 18, the output terminal Pp of the reception wireless unit 17, the power supply ground terminal of the reception wireless unit 17, and the line 56.

As a result, the electromagnetic piece 49 of the latch release mechanism 13 of the ceiling side installation section 3- _N is attracted into the solenoid 48 and the connecting wire 51 is pulled, and the latch locking piece 41 in the inner box 11 is pulled. The tip of the is pulled into the inner box 11. Then, the latch engaging piece 41 on the side of the ceiling side installation section 3 _-N
And the locking piece 24 on the sensor mounting base 5- _N side is released.

Therefore, since the sensor mounting base 5- _N is equipped with the lifting mechanism 25 and is heavy, the wire 6 is unwound from the reel 26 of the lifting mechanism 25 by its own weight. As a result, the wire 6 becomes the reel 2
6 will be successively fed out, and the pulley 33 on the sensor mounting base 5 side and the pulley 3 on the ceiling side installation section 3 side
The wire 6 is moved through 4, 35, and the sensor mounting base 5- _N is lowered. When the sensor mounting base 5- _N starts to descend, the limit switch 18 is connected to the other terminal.

As shown in FIG. 12B, when the sensor mounting base 5 reaches the final lowered position and stops, the sensor test unit 61 is set on the sensor mounting base 5 (step 305). Then, the test connector 67 of the sensor test unit 61 is connected to the connector 19 of the sensor mounting base 5, and the test section 63 is kept at a predetermined temperature, for example, if the fire sensor is a thermal sensor (step). 306).

The test result of the fire detector 4- _N is input to the transmission wireless unit 65 via the connector 19, the test connector 67 and the cable 66. The transmission wireless unit 65 sends the test result as a sensor test result signal 200 in the signal format shown in FIG. 7B. Then, the sensor test result signal 200 is received by the reception wireless unit 17 of the ceiling side installation section 3- _N , and the result is transmitted to the signal transmission lines 58 and 59 via the output terminals Pp and Pe.

Therefore, this test result is transmitted to a fire receiver (not shown) and notified according to the test result. Here, it is determined whether or not the test result is defective based on the notification (step 307). If the test result is defective (step 307; YES), the defective portion is corrected (step 308) and the process proceeds to the next step 309. If the test result is not bad (step 307; NO), the process proceeds to the next step 309.

In step 309, the rising command switch 30 of the sensor mounting base 5- _N is turned on (step 3).
09). Then, the electric power from the battery 29 is supplied to the motor 28 via the control circuit 32.
To drive. When the motor 28 rotates, its rotational driving force is decelerated by the reduction mechanism 27 and the reel 26 is wound up. As a result, the wire 6 is wound around the reel 26, and the wire 6 is pulled by the pulley 33 and the pulley 3.
Moving through 4, 35, the sensor mounting base 5- _N
As shown in FIG. 12 (c), it will rise.

When the limit switch 31 of the sensor mounting base 5- _N finally contacts the ceiling-side installation section 3- _N , the supply of electric power to the motor 28 is stopped. In this state, the locking piece 24 of the sensor mounting base 5- _N is locked to the latch locking piece 41 of the ceiling side installation portion 3- _N . Further, in this locked state, the connector 15 of the ceiling side installation portion 3 _-N
And the connector 19 of the sensor mounting base 5- _N are electrically connected. It is necessary to check whether the connectors 15 and 19 have been completely connected to each other by checking the connector 1
Since it is provided as a feed wiring through 5, current will be supplied to the sensor next to the sensor if the connection is complete, and to the sensor next to the sensor if the connection is incomplete. Since no current is supplied, it can be easily confirmed. If a poor connection is confirmed, the sensor mounting base 5 may be lowered and raised again to reconnect the connectors 15 and 19.

Then, again, it is judged whether or not there is the fire detector 4 to be tested (step 303). If there is a fire detector 4 to be tested (step 303; Y
ES), and the processes of steps 304 to 309 are repeated again. On the other hand, when there is no fire detector 4 to be tested (step 303; NO), the inspection switch S for high places is used.
1 is turned off (step 310), and the inspection is completed.

As described above, the present embodiment has the following advantages. (1) Since the sensor mounting base 5 is of a self-weight falling type, the structure on the ceiling side is simple, and a low-cost lifting means with few failures can be provided. (2) Even if the lifting mechanism of the lifting means fails,
Since the lifting mechanism part falls by its own weight, it can be repaired on the ground,
It was possible to eliminate equipment for work in high places and work in high places. (3) By using the connector 15 and the connector 19 as the feed wiring, it is possible to check the contact failure and disconnection of the connector. (4) Further, if the return of the feed wiring is returned to the receiver, even if a disconnection occurs in a part of the line or the connector, the inspection can be performed from the opposite direction. (5) When the sensor mounting base 5 descends to the ground during inspection, the connector can be used to supply power to the sensor and receive test results, and the sensor test unit 6
One is enough. (6) Since the fire detector 4 can be attached to and detached from the detector mounting base 5, the fire detector 4 can be easily replaced or repaired.

In the above embodiment, infrared rays are used as the radio signals, but it goes without saying that they may be connected by radio waves.

Since the elevating mechanism 25 can be operated by the electric power from the battery 29, the battery 29 can be charged while the sensor mounting base 5 is locked to the ceiling side installation section 3. It is good to put it. Alternatively, the elevating mechanism 25 may be configured such that the sensor mounting base 5 descends by its own weight when the battery 29 loses electromotive force.

FIG. 14 is a view showing another embodiment of the latch mechanism and the latch release mechanism. In FIG. 14, the same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 14, the ceiling-side installation portion 3 is roughly divided into a cylindrical outer box 7 and an inner box 11a concentrically provided inside the outer box 7. The lower part of the inner box 11a shown in the figure has a shape spreading outward.

The sensor mounting base 5 is provided with an engagement box 82 instead of the locking box 22. The engagement box 82 is adapted to engage with the inside of the inner box 11a. A suction portion 83 is provided inside the engagement box 82.

Further, the permanent magnet 8 is provided inside the inner box 11a.
4 and the solenoid 8 wound around the outer periphery of the permanent magnet 84
5 and a core 86 serving as a magnetic path of the permanent magnet 84 are provided.

It is arranged that no normal current is supplied to the solenoid 85. As a result, the attracting portion 83 is always attracted to the core 86 and the permanent magnet 84 by the magnetic force of the permanent magnet 84 and the action of the core 86. As a result, the sensor mounting base 5 is fixed to the outer box 7 of the ceiling side installation unit 3.

On the other hand, when the solenoid 85 is energized so as to cancel the magnetic force of the permanent magnet 84, the attracting portion 83 is separated from the core 84 and the permanent magnet 84, and the sensor mounting base 5 is placed outside the ceiling side mounting portion 3. After detaching from the box 7, the sensor mounting base 5 descends.

The other configurations of the latch mechanism and the latch release mechanism according to the above-described embodiment can be realized also by such other embodiment. In this case, according to such another embodiment, since there is no mechanical mechanism member, the structure is simple and reliable fixing is possible, and the device can be dropped easily.

FIG. 15 is a view showing still another embodiment of the latch mechanism and the latch release mechanism. In FIG. 15, the same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted. In this figure, a latch mechanism and a latch release mechanism in still another embodiment will be described.

First, the latch mechanism will be described. The ceiling-side installation unit 3 includes a cylindrical outer box 7 and an inner box 11b that is concentrically provided inside the outer box 7, and has the following configuration. A lower surface 11c of the inner box 11b shown in the drawing has a closed shape, and a limit switch 91 is provided on the rear surface of the lower surface 11c. A small hole 11d is formed on the lower surface 11c.
The movable portion of the limit switch 91 projects from the small hole 11d.

Further, at least four through holes 71, 71, ... Are bored on the side surface of the inner box 11b. From these through holes 71, 71 ,.
2, ... are projected respectively.

Each latch 72 is fixed to each arm 73, and each arm 73 is rotatably fixed to a fulcrum 74 protruding inward from the back surface of the inner box 11b.
Further, a spring 75 erected from the back surface of the inner box 11b is in contact with the arm 73 below the fulcrum 74.
When the arm 73 is biased by 5, the latch 7
2 projects from the through hole 71.

Next, the latch release mechanism will be described.
The arm 73 extends from the latch 72 to the upper portion in the figure. The end of the extended portion of the arm 73 is fixed to the plunger 77 of the solenoid 76. The solenoid 76 is fixed to the inner surface of the outer box 7 by a substantially L-shaped fixing metal fitting 78.

Further, the sensor mounting base 5 is provided with a locking box 22a. This locking box 22
Reference character a has a cylindrical shape, and the upper end portion in the drawing spreads outward. Further, through holes 22b, 22b, ... Are provided slightly above the central portion of the locking box 22a in accordance with the through holes 71, 71 ,.
Further, the locking box 22a has a contact surface 22d, and this contact surface 22d of the limit switch 91 is fixed when the cylindrical outer casing 7 is fixed to the ceiling side installation portion 3 by the latch mechanism. It is designed to press the movable part.

When the sensor mounting base 5 rises and the locking box 22a of the ceiling-side installation section 3 engages with the outside of the inner box 11b of the ceiling-side installation section 3, each latch 72 causes each locking box 22a to move. The sensor mounting base 5 is fixed to the ceiling side installation portion 3 by entering the through hole 22b.

On the other hand, when the solenoid 76 is energized to attract the plunger 77, the arms 73, 73, ... Move to the central axis side, and the latch 72 is disengaged from the through holes 22b, 22b ,. It will be. As a result, the locked state of the locking box 22a disappears, and the sensor mounting base 5 is lowered by its own weight.

Also according to such another embodiment, the sensor mounting base 5 can be locked or unlocked to the ceiling side installation portion 3 with a relatively simple structure.

[0074]

As described above, in the lifting type sensing device according to the first aspect of the present invention, the sensor mounting base to which the sensor can be attached and detached is movable, and the sensor mounting base and the ceiling side installation portion. Is connected only by a wire, the sensor mounting base is provided with an elevating mechanism for winding the wire or dropping the wire by falling due to its own weight, and a connector connected to the sensor. A latch mechanism for locking the device mounting base and a connector connected to the alarm circuit are provided, and the sensor mounting base side connector is provided when the sensor mounting base is locked by the latch mechanism on the ceiling side installation portion. Since the above-mentioned configuration and the connector of the ceiling side installation section are connected, the following effects are obtained.

(1) Since the sensor mounting base is of a self-weight drop type, the structure on the ceiling side is simple, and a low-cost elevating means with few malfunctions can be realized. (2) Even if the lifting mechanism of the lifting means fails,
Since the lifting mechanism part falls by its own weight, it can be repaired on the ground,
It was possible to eliminate equipment for work in high places and work in high places.

According to the second aspect of the invention, since the sensor mounting base is provided on the sensor mounting base and the sensor can be attached to and detached from the sensor mounting base, replacement and repair of the fire sensor are easy. You can

According to the third aspect of the present invention, the ceiling side installation portion includes a pulley for guiding the wire, a latch mechanism for preventing the base from dropping when the sensor mounting base is locked, and the latch. A latch release mechanism that releases the latching action of the mechanism, and a reception wireless unit that determines whether it is a latch release signal or a sensor output signal when the received wireless signal is an address addressed to the device and outputs it to the output terminal Since the above structure is provided, the structure on the ceiling side can be simplified, and the device with few failures can be provided.

According to the fourth aspect of the invention, since the ceiling-side installation portion is the feed wiring via the connector, wiring of each ceiling-side installation portion makes it possible to easily detect a connection failure between the connectors. .

In the invention described in claim 5, 6 or 7, the first means for judging whether the address of the received signal is an address given to itself and the address of the received signal are given to itself. Since the second means for determining the signal type by the protocol when it is an address is provided, each sensor can be specified and the signal type can be easily identified.

A test system for an elevating type sensing device according to an eighth aspect of the present invention comprises an elevating type sensing device and a test switch on the receiving radio unit and the latch release mechanism side of the ceiling side installation part of each elevating type sensing device. Power line circuit that supplies power to these devices when the test switch is closed, an alarm circuit that transmits the test result of the sensor sent from the receiving radio unit, and a sensor test unit. Since it is equipped, it has the following effects.

(1) When the sensor mounting base drops to the ground during inspection, the connector can be used to supply power to receive the test results, and one sensor test unit is sufficient. is there. (2) By connecting the connectors to each other as the feed wiring, it is possible to check the contact failure of the connectors, disconnection and the like. (3) Further, if the return of the feed wiring is returned to the receiver, even if a disconnection occurs in a part of the line or the connector, the inspection can be performed from the opposite direction.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a lift type sensing device according to the present invention.

FIG. 2 is a diagram showing an embodiment of a lifting type sensing device according to the present invention.

FIG. 3 is a diagram showing an example of the configuration of lifting means used in the lifting type sensing device.

FIG. 4 is a view showing a latch mechanism of the elevation sensing device of the above.

FIG. 5 is a block diagram showing an example of an electric circuit of the elevation type sensing device.

FIG. 6 is a block diagram showing a configuration example of a reception wireless unit of the above.

FIG. 7 is a diagram showing a signal format of a radio signal,
(A) shows an example of the descending command signal 100, and (b) shows an example of the sensor test result signal 200.

FIG. 8 is a front view showing an example of the sensor test unit of the above.

FIG. 9 is a side view showing an example of the sensor test unit of the above.

FIG. 10 is a block diagram showing an electric circuit of a signal system of the sensor test unit.

FIG. 11 is a block diagram showing an example of the configuration of a test system for the lifting type sensing device of the above.

FIG. 12 is a diagram showing an operation example of the elevation sensing device of the above.

FIG. 13 is a flowchart for explaining a test operation of the test system for the lifting type sensing device.

FIG. 14 is a view showing another embodiment of the latch mechanism and the latch release mechanism.

FIG. 15 is a view showing still another embodiment of the latch mechanism and the latch release mechanism.

[Explanation of symbols] 1 Lifting type sensing device 2 ceiling 3 Ceiling side installation part 4 Fire detector 5 Sensor mounting base 6 wires 7 outer box 10 through holes 11, 11a, 11b Inner box 12 Latch mechanism 13 Latch release mechanism 15, 19 connector 22, 22a Locking box 22b through hole 23 Sensor mount 24 Locking piece 25 Lifting mechanism 26 reels 41 Latch locking piece 61 Sensor test unit 62 housing 63 Testing Department 65 Transmission wireless unit 66 cable 67 Test Connector 72 Latch 76 solenoid 77 Plunger 82 Engagement box 83 Adsorption part 84 permanent magnet 85 solenoid 86 core

Continuation of the front page (56) Reference JP-A-1-191295 (JP, A) JP-A-11-49486 (JP, A) JP-A-6-309575 (JP, A) Actual development Sho-60-60294 (JP , U) Actually open 3-66484 (JP, U) Actually open 60-76488 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08B 17/00 G08B 26/00

Claims (8)

(57) [Claims] 1. An elevating type sensing device in which a sensor is mounted at a high place so that the sensor can be moved up and down, and a sensor mounting base to which the sensor is detachable can be moved. The ceiling side installation unit is connected only by a wire, and the sensor mounting base is provided with an elevating mechanism for winding the wire or dropping it out by its own weight and a connector connected to the sensor. Is provided with a latch mechanism for locking the sensor mounting base and a connector connected to an alarm circuit, and the sensor mounting base is mounted when the sensor mounting base is locked by the latch mechanism on the ceiling side installation part. An elevating type sensing device, characterized in that a connector on the base side and a connector on the ceiling side installation portion are connected. 2. The sensor mounting base comprises a sensor detachably mounted on a sensor mounting base, a connector connected to the sensor via the sensor mounting base, and a wire wound or dropped by its own weight. The elevating sensor according to claim 1, further comprising an elevating mechanism for elevating the base. 3. The ceiling-side installation section includes a pulley for guiding a wire, a latch mechanism for preventing the base from dropping when the sensor mounting base is locked, and a latching action of the latch mechanism. Latch release mechanism to
When the received wireless signal is the address addressed to the device, it is judged whether it is a latch release signal or sensor output signal and outputs it to the output terminal, and the base is locked by the latch mechanism. A limit switch that connects the output terminal of the receiving wireless unit to the latch release mechanism side when the base is lowered or to the alarm circuit side when the base is lowered, and a connector connected to the alarm circuit that transmits the detection signal of the sensor. The elevating type sensing device according to claim 1, further comprising: 4. The elevating type sensing device according to claim 1, wherein the ceiling side installation portion is provided as a feed wiring via a connector. 5. The receiving wireless unit includes first means for determining whether an address of a received signal is an address given to itself, and when the address of the received signal is an address given to itself. 2. The elevating / lowering type sensing device according to claim 1, further comprising: second means for determining a signal type according to a protocol. 6. The first means comprises a decoder for converting a received signal, an address setting circuit provided to itself, and a comparison for comparing a received signal from the decoder and a self address from the address setting circuit. 6. The lifting type sensing device according to claim 5, comprising a circuit. 7. The second means is a protocol setting circuit capable of setting a protocol, and when a received signal matches a self address, the received signal and the protocol from the protocol setting circuit are judged to determine a signal. The elevating type sensing device according to claim 5, further comprising a determination circuit for determining a type. 8. An elevating type sensing device in which an alarm circuit and a sensor are connected via connectors, and when a wireless down command is received, a wire is fed out by its own weight and the connectors are disengaged from each other to lower the sensor mounting base. The equipment and a power line circuit that is connected to the receiving wireless unit and the latch release mechanism side of the ceiling side installation part of each lifting type sensing device through a test switch and that supplies power to these devices when the test switch is closed. The alarm circuit that transmits the test result of the sensor sent from the receiving wireless unit and the address given to the sensor mounting base of the lifting type sensing device to be tested can be set and the detection of the address can be set. Can output a wireless down command to the instrument mounting base, and test the sensor of the lowered sensor mounting base, and test the sensor. And a sensor test unit capable of outputting a result as a wireless test signal.