JPH1186158A - Lifting-type sensing device and test system of sensing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting-type sensing device which has a simple configuration, is also functionally sufficient, and also improves reliability. SOLUTION: A sensor-mounted base 5, which has a sensor 4 that is attachable and detachable is movable, the base 5 is connected to a ceiling side provided part 3 only with wires 6, the base 5 is provided with a lifting mechanism 25 which winds the wires 6 and feeds the wires 6 with fall due to its own weight and a connector 19 that is connected to the sensor 4, the part 3 is provided with a latch mechanism 12 that locks the base 5 and a connector 15 that is connected to a warning circuit, and the connector 19 on the side of the base 5 is connected to the connector 15 on the side of the part 3, when the base 5 is locked to the part 3 by the mechanism 12.

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 testing system for the sensing device. More specifically,
According to the present invention, a sensor attached to a high place can be lowered by its own weight to perform inspections and the like, and when the sensor reaches an installation position by being raised, the sensor is easily connected to an alarm circuit. The present invention relates to a lifting type sensing device. The present invention also provides a test unit for testing the elevating type sensing device that is lowered to a stop position, transmits the test result wirelessly from the test unit to the ceiling-side installation part, and performs the test on the ceiling-side installation part. The present invention relates to a test system for a lifting type sensing device for transmitting a result to an alarm circuit.

[0002]

2. Description of the Related Art In this type of a lift type detection device, a fire detector is connected to a ceiling-side installation portion by a wire or a signal cable, and the wire or the signal cable is wound or unreeled by a winding mechanism. The vessel can be moved up and down. Then, at the time of caution, the wire or signal cable is wound up by the winding mechanism so that the sensor is placed on the ceiling, while when performing the test, the wire or signal cable is unreeled from the winding mechanism,
The sensor is lowered and stopped at the test position so that the sensor can be tested and inspected.

[0003] The adoption of such a structure is based on the following reasons. First of all, regularly (once every six months)
The inspection of the sensor is obligatory, and it is desired that the inspection can be easily performed. Second, if the sensor is installed in a high place such as a gymnasium or arena (event hall), usually a catwalk (narrow passage)
Inspections have been provided to make inspections easier, but when such facilities are not in place, a long ladder can be put on a predetermined location and climbed on the ladder for inspections, or long inspections can be performed. Since the inspection is performed using rods, dangerous work must be performed, and since accidents have occurred during the work, it is easy and safe to perform inspection work. It is what is desired.

[0004] Many of such conventional elevating 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. Microfilm of No. 60-7648 (Japanese Utility Model Application No. 58-164572),
Microfilm of Japanese Utility Model Application Laid-Open No. 3-66484 (Japanese Utility Model Application No. 1-126446), see JP-A-6-309575].

[0005] It is to be noted that, although the sensor is not moved up and down, a conventional apparatus in which an abnormality generating means is brought close to the sensor [Japanese Utility Model Application Laid-Open No. 60-95687 (Japanese Utility Model Application No. 58-185).
864), and a conventional device in which the warning light is lowered [see the microfilm of Japanese Utility Model Application Laid-Open No. 5-87685 (Japanese Utility Model Application No. 3-44534)].
Has been 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 elevating type sensing device has the following disadvantages. (1) For example, when lowering the sensors, the motor is rotated to draw out a wire or the like from the winding mechanism, but the sensors do not lower, or a control circuit for each sensor is required to lower the sensors individually. Or the sensor could not be attached or detached, resulting in inadequate functionality. (2) The structure of the lifting mechanism and the control circuit for driving and controlling the lifting mechanism are complicated, the number of components used is large, and the price is high. (3) Since the signal line is wound or unwound, the signal line needs to be long, and furthermore, there is a risk of metal fatigue of the signal line, which is problematic in reliability. SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to solve the drawbacks of the conventional device, and to provide a lifting and lowering type sensing device which has a simple structure, is functionally sufficient, and has improved reliability.

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

[0008]

According to the first aspect of the present invention, there is provided an elevating type sensing device in which a sensor is mounted at a high place and the sensor is moved up and down. In the enabled elevating type sensing device, the sensor allows the detachable sensor mounting base to be movable, and the sensor mounting base and the ceiling-side installation portion are connected only by wires, and the sensor mounting base includes Provided with a connector connected to a detector and a lifting mechanism that unwinds the wire or pulls out the wire when dropped by its own weight, and a ceiling-side installation part that is connected to a latch mechanism that holds the sensor mounting base and an alarm circuit. And a connector on the sensor mounting base side and a connector on the ceiling side mounting portion are connected when the sensor mounting base is locked to the ceiling side mounting portion by a latch mechanism. It is characterized in that it has a configuration.

According to a second aspect of the present invention, in the elevating type sensing device according to the first aspect, the sensor mounting base includes:
A sensor detachably attached to the sensor mount, a connector connected to the sensor via the sensor mount, and a lifting mechanism for raising and lowering the base by winding up the wire or dropping by its own weight. It is characterized by the following.

According to a third aspect of the present invention, in the elevating type sensing device according to the first aspect, the ceiling-side installation portion connects the pulley for guiding the wire and the base when the sensor mounting base is locked. A latch mechanism for preventing the latch mechanism from dropping, a latch release mechanism for releasing the latch function of the latch mechanism, and determination as to whether a latch release signal or a sensor output signal when a received radio signal is an address addressed to the device. And an output terminal of the receiving radio unit 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. And a connector connected to an alarm circuit for transmitting a detection signal of the sensor.

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

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

According to a sixth aspect of the present invention, in the lifting and lowering type sensing device according to the fourth aspect, the first means includes a decoder for converting a received signal, an address setting circuit provided to itself, and a decoder. And a comparison circuit for comparing the received signal from the address setting circuit with its own address from the address setting circuit.

According to a seventh aspect of the present invention, in the elevating type sensing device according to the fourth aspect, the second means includes a protocol setting circuit capable of setting a protocol, and a protocol setting circuit for setting a protocol when a received signal coincides with its own address. A determination circuit for determining a type of the signal by determining a received signal and a protocol from the protocol setting circuit.

In order to achieve the second object, a test system for an up-and-down type sensing device according to the invention of claim 8 is provided.
An alarm circuit and a sensor are connected via a connector, and when a wireless lowering command is received, a wire is fed out by its own weight, the connector is disengaged, the sensor mounting base is lowered, and an elevating type sensing device, A power line circuit that is connected via a test switch to a receiving wireless unit and a latch release mechanism side of a ceiling-side installation portion of the type sensing device and that supplies power to these devices when the test switch is closed; An alarm circuit for transmitting the test result of the sensor sent from the device, and an address given to the sensor mounting base of the lifting type sensing device to be tested can be set. Can output a wireless descent command and test the sensor of the sensor mounting base that has dropped, and wirelessly test the test result of that sensor. It is obtained by a sensor test unit which can be output as a degree.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 are views for explaining a lifting and lowering 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, in which a sensor mounting base is housed in a ceiling-side installation portion. FIG.
FIG. 2 is a view illustrating the lifting type sensing device according to the first embodiment, in a state where a sensor mounting base is suspended from a ceiling-side installation portion via a wire. FIG. 3 is a diagram showing a schematic configuration of the elevating means provided on the sensor mounting base and the ceiling side installation part. FIG. 4 is a diagram illustrating a latch mechanism provided in the ceiling-side installation unit.

In these figures, a lifting type sensing device 1 is shown.
Is roughly divided into a ceiling-side installation part 3 attached to a ceiling part 2 at a high place, and a sensor mounting base 5 to which a fire detector 4 is made detachable. It has a structure in which the base 5 is connected with only the wires 6.

The ceiling side installation section 3 has an outer box 7 having a cylindrical shape with a bottom and a peripheral edge 8 of the cylindrical outer box 7 is fixed to the ceiling section 2 with screws 9 on the back surface of the ceiling section 2. It is fixed by things. 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.

The inside of the outer box 7 of the ceiling side installation section 3 includes:
The inner box 11 is installed with the center axis of the cylindrical inner box 11 aligned with the center 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 latch function of the latch mechanism 12, and an alarm circuit and an electric circuit connected to an alarm circuit A circuit board 14 on which necessary electric circuits are mounted, and a connector 15 electrically connected to the alarm circuit via the circuit board 14 are built in.

Inside the outer box 7 and outside the inner box 11, a receiving radio unit 17 is provided on one end of an L-shaped mounting plate 16, and a receiving radio unit 17 is provided on the other end of the mounting plate 16. A limit switch 18 is attached. The receiving radio unit 17 and the limit switch 18 are electrically connected to the circuit board 14. The receiving wireless unit 17 receives a lowering command and a test result from a test unit described later, operates the latch release mechanism 13 via the circuit board 14, and sends the test result to an alarm circuit. . The limit switch 18 connects the output terminal of the receiving radio 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 has been lowered. The output terminal of the receiving radio unit 17 is connected to an alarm circuit via the circuit board 14.

The sensor mounting base 5 can be roughly classified into a disk-shaped substrate 21 having a window 20 at a position where the reception radio unit 17 is installed, and a locking box provided on the upper side of the substrate 21 in the drawing. 22 and a sensor mounting base 23 provided below the substrate 21 in the figure. The fire detector 4 is detachable from the detector mount 23. A connector 19 is provided on the upper inside of the locking box 22. The connector 19 is connected to a connection fitting of the sensor mount 23, and when the fire detector 4 is mounted on the sensor mount 23, the connector 19 is connected.
Is electrically connected to the fire detector 4 via the connection fitting. When the sensor mounting base 5 is locked to the ceiling-side installation section 3, the connector 19 of the sensor installation base 5 is completely electrically connected to the connector 15 of the ceiling-side installation section 3.

On the substrate 21, 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. As shown in FIG. 4, the inner peripheral edge of the locking box 22 has a gently curved shape from the outside to the inside, and a locking shape having a horizontal shape on the lower side of the curve. 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. And a control circuit 32 that energizes the motor 28 by a command from the ascending command switch 30 and stops energizing the motor 28 by a detection signal from the limit switch 31.

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

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

The latch mechanism 12 basically includes three latching pieces 41, 41, 41 and is configured as follows. The three latching pieces 41, 41, 41 are arranged 120 degrees apart from each other about the center 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 each latching piece 41, 41, 41 has the same configuration, only one will be described as a representative. This latch locking piece 41 is
4 is always urged in the direction of the arrow shown. The outside of the tip end of the latching piece 41 has a gentle curve from the inside to the outside, and has a horizontal shape on the upper side of the curve. This latch locking piece 4
1 is provided with a through hole 45 at the position of the inner box 11 so that the outer side of the end protrudes to the outer periphery of the inner box 11. It protrudes from the outer circumference. Further, the latching pieces 24 provided on the inner periphery of the upper end of the latching box 22 in the figure are provided with latching pieces 41, 41, 4.
1 is locked to the outside of the tip.

The latch release mechanism 13 includes a solenoid 48 fixed to the bottom plate 42, an electromagnetic piece 49 that moves within the solenoid 48 by a predetermined stroke when power is applied to the solenoid 48, and a stopper 50 for the electromagnetic piece 49. . In addition, the electromagnetic piece 49 is connected to the distal end side of the latch locking piece 41 via the connecting wire 51. This solenoid 4
8 is supplied with power, the electromagnetic piece 49 moves to the upper side in the figure, and the connecting wire 51 moves the latching piece 41, so that the latching piece 41 becomes a locking box of the sensor mounting base 5. 22 comes off from the locking piece 24. Also, the receiving radio unit 17, 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 elevating type sensing device. In FIG. 5, the + side line 55 of the power line is connected to terminals Bj and Bk. The earth 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 receiving radio unit 17, and the ground line 56 is connected to the − side of the receiving radio unit 17.
Each is electrically connected to a power supply terminal. Also,
The + side line 55 is connected to the solenoid 4 of the latch release mechanism 13.
8. It is connected to one end Pp of the output terminal of the receiving radio unit 17 via one terminal of the limit switch 18.

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

The terminal Tj of the connector 19 provided inside the sensor mounting base 5 is connected to a connection 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 mounting base 23.

FIG. 6 is a block diagram showing an example of the configuration of the receiving radio unit 17 used in the elevating type sensing device. In FIG. 6, the receiving radio unit 17 includes, for example, a light receiving diode 171 as a light receiving element, a resistor 172 for converting the output of the light receiving diode 171 into a voltage signal, an amplifier circuit 173 for amplifying the voltage signal, and an amplifier circuit for this. A detection circuit 174 for detecting the output signal of the 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
A comparison circuit 178 for detecting a match between addresses, and protocol setting circuits 179 and 180 for specifying the content of a signal.
And determination circuits 181 and 182 for specifying signal contents, output circuits 183 and 184 for outputting signals corresponding to output signals from the determination circuits 181 and 182, and a controller 185 for controlling the operation of each of the above circuits. Have.

The light receiving element 171 has a cathode connected to a power supply Vcc.
, And the anode is connected to the ground line via the resistor 172. This light receiving element 171
Converts an operation command emitted from the sensor test unit 61 or a radio signal (infrared ray) of a test result 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 supplies a voltage signal corresponding to the command signal generated in the resistor 172 to the amplifier circuit 173. The amplification circuit 173 amplifies the input command signal voltage to a predetermined level. The output terminal of the amplification 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. An output terminal of the detection circuit 174 is connected to an input terminal of the waveform shaping circuit 175, and the detected command signal is output to the waveform shaping circuit 175.
To supply. The waveform shaping circuit 175 slices the input command signal or test result signal at a certain level and shapes the waveform. The output terminal of the waveform shaping circuit 176 is
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 the comparison circuit 17
8 are compared. When the addresses match in the comparison circuit 178, a signal is 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 a signal having the same protocol to the output circuit 183. Judgment circuit 18
At 2, the protocol from the protocol setting circuit 180 is compared with the signal protocol, and a signal having the same protocol is sent to the output circuit 184. A drop command signal is output from an output terminal of the output circuit 183, and a test result signal is output from an 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 a 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 determination protocol 103, a signal 104, and a synchronization unit 105. FIG. 7B shows the sensor test result signal 20.
An example of 0 is shown. The sensor test result signal 200 is
Synchronizer 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 transmitted from the sensor test unit 61 as serial radio signals. These signals 100, 20
0 is transmitted to the receiving wireless unit 17 by radio.

8 to 10 show the sensor test unit 61. FIG. FIG. 8 shows a sensor test unit 6 used in the test system of the lifting type sensing device of the present invention.
FIG. FIG. 9 is a side view showing the sensor test unit 61.

In these figures, the sensor test unit 61 is configured as follows. A test section 63, a limit switch, and a power supply are built in a casing 62 having a predetermined rectangular outer shape. An operation switch 64 for inputting a descending command and turning on the power is provided on the front surface of the housing 62. Further, the housing 62
On the upper surface of the transmission wireless unit 65, not shown,
A display and numeric keys are provided. The transmitting wireless unit 65 can transmit 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 a keypad, a numeric keypad, a display, and an 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 FIG.
The sensor test unit 61 includes an operation switch 64, a transmission wireless unit 65, a test connector 67, a numeric keypad 68, and a display 69, and is configured as follows.

The transmission radio unit 65 is connected to the controller 6
51, a power amplifier circuit 652, and light emitting elements 653, 65
4 The controller 651 is constituted by, for example, a microcomputer, and the microcomputer comprises an arithmetic processing unit, a ROM, a RAM, an input / output interface, and a bus line connecting these. The input interface of the controller 651 is connected to a numeric keypad 68 and an operation switch 64, and also connected to a test connector 67 via a 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. Also, the controller 61
The display 69 and the power amplifier circuit 652 are connected to the output interface of the first. Light emitting elements 653 and 654 are connected to the output terminal of the power amplification circuit 652.

In the sensor test unit 61, when an address is set from the ten keys 68, the address is displayed on the display 69. When the address displayed on the display 69 is the target address, a lowering command is input by pressing the lowering command switch of the operation switch 64. Thereby, the light emitting element 65 of the transmission wireless unit 65 of the sensor test unit 61
From 3, 654, a descending command signal 100 in the signal format shown in FIG.

Further, the test connector 67 of the sensor test unit 61 is connected to the connector 19 of the sensor mounting base 5 which has come down to the stop position.
When the fire detector 4 is tested by the test unit 63, the result is input to the controller 651 of the transmission wireless unit 65, and the light emitting elements 653 and 654 of the transmission wireless unit 65 transmit the signal of the signal format shown in FIG. Detector 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 of the elevating 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 fed out by its own weight, the connectors 15 and 19 are detached from each other, and the sensor mounting base 5 is lowered. 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
3 is connected via a test switch S1,
When the test switch S1 is closed, these devices 13, 17
Line circuit 54 for supplying power to the power supply, an alarm circuit 57 for transmitting the test result of the fire detector 4 sent from the receiving radio unit 17, and the mounting of the sensor of the lifting type sensor 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, and a detector test unit 61 capable of outputting a test result of the fire detector 4- _{N as} a detector test result signal 200.

[0042] Each ceiling installation part 3 _-1, ..., 3 _-N, the terminal Bk of ceiling installation part 3 _-N-1 terminal Bj and the ceiling-side mounting section 3 _-N
Are 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,.
-N is the terminal Lj of the ceiling side installation part 3 _-N-1 and the ceiling side installation part 3
_The -L terminal Lk is connected by a line 58p, and the terminal Lej of the ceiling-side installation part 3- _N-1 and the terminal Lek of the well-side installation part 3- _N are connected by a line 59m.

In this embodiment, at present, the sensor mounting base 5- _N is lowered, and the other sensor mounting bases 5 _-N are lowered.
_-1, ..., the 5 _-N-1 ceiling installation unit 3 _-1, ..., are latched in 3 _-N-1. Further, the test connector 67 of the sensor test unit 61 is connected to the connector 19 of the ceiling side installation unit 3, and this connector 19 can supply information of the fire detector 4 to the transmission wireless unit 65 via the cable 66. It has become. The operation of the test system of the lifting type sensing device having such a configuration will be described with reference to FIGS.
This will be described with reference to FIG. Here, FIG. 12 is a diagram for explaining the operation of lowering, checking, and raising the sensor mounting base 5. FIG. 13 is a flowchart for explaining the operation of the apparatus.

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
3- _N is supplied with power and becomes operable.

Here, it is determined whether there is a fire detector 4 to be tested (step 303). If there is a fire detector 4 to be tested (step 303; YE
S), a predetermined address is inputted from the ten keys 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 descending command is issued.
4 is pressed (step 304). As a result, the transmission wireless unit 65 of the sensor test unit 61 receives the signal shown in FIG.
A descending command signal 100 having the signal format shown in FIG. 12A is transmitted to the ceiling-side installation section 3- _N (see FIG. 12A). In this case, if the address is N, the ceiling-side installation unit 3
_{At -N} , the sensor test unit 61 outputs a descending command signal 100 having the signal format shown in FIG. That is,
The descending command signal 100 is sent to the synchronization unit 101, the address 10
2. Protocol 103, falling signal 104, synchronization unit 105
And the descending command signal 10
0 is transmitted from the transmission wireless unit 65 of the sensor test unit 61.

Accordingly, the receiving radio unit 17- _N of the ceiling side installation unit 3- _N turns on the output terminal Pp of the receiving radio unit 17- _N when the address coincides after receiving the descending command signal 100. To This results in line 55,
Current flows through the solenoid 48 of the latch release mechanism 13, one electrode of the limit switch 18, the output terminal Pp of the wireless reception unit 17, the power supply ground terminal of the wireless reception 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 sucked into the solenoid 48 and the connecting wire 51 is pulled, and the latching piece 41 in the inner box 11 is pulled. Is pulled into the inner box 11. Then, the latching piece 41 on the side of the ceiling side installation part 3- _N
And the locking piece 24 on the sensor mounting base 5- _N side is released.

Therefore, the elevating mechanism 25 is mounted on the sensor mounting base 5- _N , and because of its weight, the wire 6 is drawn out from the reel 26 of the elevating mechanism 25 by its own weight. Thereby, the wire 6 is connected to the reel 2
6, the pulley 33 on the sensor mounting base 5 side, and the pulley 3 on the ceiling installation section 3 side.
The wire 6 will move through 4, 35, lowering the sensor mounting base 5- _N . When the sensor mounting base 5- _N starts lowering, the limit switch 18 is connected to the other terminal.

When the sensor mounting base 5 has reached the final descending position and stopped as shown in FIG. 12B, 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 maintained at a predetermined temperature if, for example, the fire detector is a thermal sensor (step). 306).

The test result of the fire detector 4- _N is inputted to the transmission radio unit 65 via the connector 19, the test connector 67 and the cable 66. The transmitting wireless unit 65 transmits the test result as a sensor test result signal 200 in a 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 unit 3 _-N , and the result is transmitted to the signal transmission lines 58 and 59 via the output terminals Pp and Pe.

Therefore, the test result is transmitted to a fire receiver (not shown), and a notification according to the test result is made. 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 part is corrected (Step 308), and the routine goes to the next Step 309. If the test result is not bad (step 307; NO), the process moves to the next step 309.

At step 309, the ascending command switch 30 of the sensor mounting base 5- _N is turned on (step 3).
09). Then, electric power from the battery 29 is supplied to the motor 28 via the control circuit 32, and the motor 28
Drive. When the motor 28 rotates, the rotational driving force is reduced by the speed reduction mechanism 27 and the reel 26 is wound. As a result, the wire 6 is wound around the reel 26, and the wire 6 is
Moving through 4, 35, the sensor mounting base 5- _N
It will rise as shown in FIG.

When the limit switch 31 of the sensor mounting base 5- _N finally comes into contact with the ceiling-side installation portion 3- _N , the supply of 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 part 3- _N . 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 the connector 1 that checks whether the connectors 15 and 19 are completely connected.
5, the current is supplied to the next sensor of the sensor if the connection is complete, and to the next sensor of the sensor if the connection is incomplete. Since no current is supplied, it can be easily confirmed. If a connection failure is confirmed, the sensor mounting base 5 may be moved down and up again to reconnect the connectors 15 and 19.

Then, it is determined again whether there is a fire detector 4 to be tested (step 303). If there is a fire detector 4 to be tested (step 303; Y
ES), and repeat the processing of steps 304 to 309 again. On the other hand, if there is no fire detector 4 to be tested (step 303; NO), the inspection switch S
1 is turned off (step 310), and the inspection is terminated.

As described above, the present embodiment has the following advantages. (1) Since the detector mounting base 5 is of a self-weight drop type, the structure on the ceiling side is simplified, and low-cost elevating means with few failures can be provided. (2) Even if the lifting mechanism of the lifting means breaks down,
Since the lifting mechanism falls under its own weight, it can be repaired on the ground,
Equipment for high-altitude work and high-altitude work were eliminated. (3) By using the connector 15 and the connector 19 as feed wiring, it is possible to check a contact failure, disconnection, and the like of the connector. (4) Also, if the return of the feed wiring is returned to the receiver, even if a part of the track or the connector is disconnected, the inspection can be performed from the opposite direction. (5) When the sensor mounting base 5 is lowered to the ground at the time of inspection, power can be supplied to the sensor using the connector and test results can be received.
One is enough. (6) Since the fire detector 4 can be attached to and detached from the sensor mounting base 5, the fire detector 4 can be easily replaced or repaired.

In the above embodiment, the infrared signal is used as the radio signal. However, it is needless to say that the radio signal may be connected.

Since the elevating mechanism 25 can be operated by the electric power from the battery 29, the battery 29 can be charged when the sensor mounting base 5 is locked to the ceiling-side installation part 3. Good to put. Alternatively, the elevating mechanism 25 may be configured such that the sensor mounting base 5 is lowered by its own weight when the battery 29 loses the 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 embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 14, the ceiling side installation section 3 is roughly divided into a cylindrical outer box 7 and an inner box 11a provided concentrically inside the outer box 7. The illustrated lower portion of the inner box 11a has a shape that spreads outward.

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

The permanent magnet 8 is provided inside the inner box 11a.
4 and a solenoid 8 wound on 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.

Normally, no current is supplied to the solenoid 85. Thus, 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 separates from the core 84 and the permanent magnet 84, and the sensor mounting base 5 is moved outside the ceiling side mounting portion 3. The box is detached from the box 7 and the sensor mounting base 5 is lowered.

According to such another embodiment, another configuration of the latch mechanism and the latch release mechanism according to the above embodiment can be realized. In this case, according to such another embodiment, since there is no mechanical mechanism member, the structure is simple, secure fixing is possible, and the device can be easily dropped.

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 are denoted by the same reference numerals, and description thereof will be omitted. In this figure, a latch mechanism and a latch release mechanism according to still another embodiment will be described.

First, the latch mechanism will be described. The ceiling side installation section 3 includes a cylindrical outer box 7 and an inner box 11b provided concentrically inside the outer box 7, and has the following configuration. The illustrated lower surface 11c of the inner box 11b has a closed shape, and a limit switch 91 is provided on the back surface of the lower surface 11c. This lower surface 11c has a small hole 11d.
The movable portion of the limit switch 91 protrudes from the small hole 11d.

Further, at least four through holes 71, 71,... Are formed in the side surface of the inner box 11b, and bearing type latches 72, 7 are formed through these through holes 71, 71,.
2,... Are respectively projected.

Each latch 72 is fixed to each arm 73, and this arm 73 is rotatably fixed to a fulcrum 74 projecting inward from the back surface of the inner box 11b.
A spring 75 planted from the back of the inner box 11b is in contact with the arm 73 below the fulcrum 74.
5, the arm 73 is urged, so that the latch 7
2 protrude from the through hole 71.

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

The sensor mounting base 5 is provided with a locking box 22a. This locking box 22
“a” has a cylindrical shape, and the upper end in the figure extends outward. Further, through holes 22b, 22b,... Are provided slightly above the center of the locking box 22a in accordance with the through holes 71, 71,.
The locking box 22a has an abutment surface 22d. The abutment surface 22d is provided when the cylindrical outer box 7 is fixed to the ceiling side installation portion 3 by the latch mechanism. The movable part is pressed.

When the sensor mounting base 5 is lifted 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 is moved to the corresponding position of the locking box 22a. The sensor mounting base 5 is fixed to the ceiling side installation part 3 by entering the through hole 22b.

On the other hand, when the solenoid 76 is energized and the plunger 77 is sucked, the arms 73 move toward the central axis, and the latch 72 comes off the through holes 22b, 22b,. Will be. As a result, the locking state of the locking box 22a disappears, and the sensor mounting base 5 descends by its own weight.

According to such still another embodiment, the sensor mounting base 5 can be locked to the ceiling-side installation portion 3 or the lock can be released with a relatively simple configuration.

[0074]

As described above, the up-and-down type sensing device according to the first aspect of the present invention makes it possible to move a sensor mounting base on which a sensor can be attached and detached. And a connector connected to a sensor and a lifting / lowering mechanism for feeding the wire by dropping the wire by its own weight or a connector connected to the sensor. A latch mechanism for retaining the detector mounting base and a connector connected to the alarm circuit, wherein the connector on the sensor mounting base side is provided when the sensor mounting base is locked to the ceiling-side installation portion by the latch mechanism. And the connector of the ceiling-side installation section are connected, so that the following effects are obtained.

(1) Since the sensor mounting base is of the self-weight drop type, the structure on the ceiling side is simplified, and low-cost elevating means with few failures can be provided. (2) Even if the lifting mechanism of the lifting means breaks down,
Since the lifting mechanism falls under its own weight, it can be repaired on the ground,
Equipment for high-altitude work and high-altitude work were eliminated.

According to the second aspect of the present invention, since the sensor mounting base is provided on the sensor mounting base and the sensor is detachable from the sensor mounting base, the fire detector can be easily replaced or repaired. Can be.

According to the third aspect of the present invention, the ceiling-side installation portion has a pulley for guiding the wire, a latch mechanism for preventing the base from dropping when the sensor mounting base is locked, A latch release mechanism for releasing the latch function of the mechanism, and a receiving wireless unit for determining whether the received wireless signal is an address addressed to the device, whether the signal is a latch release signal or a sensor output signal, and outputting the signal to an output terminal Therefore, the structure on the ceiling side is simplified, and a device with less trouble can be obtained.

According to the fourth aspect of the present invention, since the ceiling-side installation section is provided as feed wiring via a connector, if each ceiling-side installation section is wired, a connection failure between the connectors can be easily detected. .

According to the fifth, sixth or seventh aspect of the present invention, the first means for judging whether the address of the received signal is an address assigned to itself, and the address of the received signal is assigned to itself. Since the second means for judging the type of the signal by the protocol when the address is provided is provided, it is possible to specify each sensor and to easily identify the type of the signal.

According to the test system for an up-and-down type sensing device according to the eighth aspect of the present invention, the up-and-down type sensing device and the receiving radio unit and the latch release mechanism side of the ceiling-side installation portion of each up-and-down type sensing device are connected via a test switch. A power line circuit for supplying power to these devices when the test switch is closed, an alarm circuit for transmitting a test result of the sensor transmitted from the receiving radio unit, and a sensor test unit. Since it is provided, it has the following effects.

(1) When the sensor mounting base drops to the ground at the time of inspection, power can be supplied using the connector and test results can be received, and the effect of requiring only one sensor test unit is obtained. is there. (2) By using connectors as feed wiring, it is possible to check for poor contact of the connectors, disconnection, and the like. (3) If the return of the feed wiring is returned to the receiver, even if a part of the track or the connector is disconnected, the inspection can be performed from the opposite direction.

[Brief description of the drawings]

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

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

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

FIG. 4 is a diagram showing a latch mechanism of the lifting type sensing device.

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

FIG. 6 is a block diagram illustrating a configuration example of a reception wireless unit according to the embodiment.

FIG. 7 is a diagram showing a signal format of a wireless signal according to the embodiment;
(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 according to the first embodiment;

FIG. 9 is a side view showing an example of the sensor test unit according to the second embodiment.

FIG. 10 is a block diagram showing an electric circuit of a signal system of the sensor test unit according to the first embodiment;

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

FIG. 12 is a diagram showing an operation example of the elevating type sensing device.

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elevating type sensing device 2 Ceiling part 3 Ceiling side installation part 4 Fire detector 5 Detector mounting base 6 Wire 7 Outer box 10 Through hole 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 Reel 41 Latch Locking Piece 61 Sensor Test Unit 62 Housing 63 Test Unit 65 Transmitting Radio Unit 66 Cable 67 Test Connector 72 Latch 76 Solenoid 77 Plunger 82 Engagement box 83 Suction unit 84 Permanent magnet 85 Solenoid 86 Core

Claims (8)

[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, wherein the sensor makes a removable sensor mounting base movable, and the sensor mounting base and The ceiling-side installation section is connected only with a wire, and the sensor mounting base is provided with an elevating mechanism that winds up the wire or draws out the wire when dropped by its own weight and a connector that is connected to the sensor. A latch mechanism for retaining the sensor mounting base and a connector connected to an alarm circuit are provided, and the sensor mounting is performed when the sensor mounting base is locked to the ceiling-side installation portion by the latch mechanism. A lift-type sensing device, wherein a connector on a base side is connected to a connector on the ceiling-side installation part. 2. The sensor mounting base includes a sensor detachably mounted on the sensor mounting base, a connector connected to the sensor via the sensor mounting base, and a wire wound or dropped by its own weight. 2. The elevating type sensing device according to claim 1, further comprising an elevating mechanism for elevating and lowering the base. 3. A ceiling-side installation portion includes a pulley for guiding a wire, a latch mechanism for preventing the base from dropping when the sensor mounting base is locked, and releasing a latch function of the latch mechanism. A latch release mechanism,
When the received wireless signal is an address addressed to the device, a receiving wireless unit that determines whether the signal is a latch release signal or a sensor output signal and outputs the signal to an output terminal, and the base is locked by a latch mechanism. A limit switch for connecting the output terminal of the receiving radio unit to the latch release mechanism when the base is lowered, or to the alarm circuit when the base is lowered, and a connector connected to an alarm circuit for transmitting a detection signal of the sensor. The lifting type sensing device according to claim 1, further comprising: 4. The elevating type sensing device according to claim 1, wherein the ceiling-side installation part is a feed wiring via a connector. 5. The receiving radio unit according to claim 1, wherein the first unit determines whether an address of the received signal is an address assigned to itself, and when the address of the received signal is an address assigned to itself. 2. The elevating type sensing device according to claim 1, further comprising: a second means for judging a type of a signal by a protocol. 6. The first means includes: a decoder for converting a received signal; an address setting circuit assigned to the decoder; and a comparison unit for comparing a received signal from the decoder with a self address from the address setting circuit. 6. The elevating type sensing device according to claim 5, comprising a circuit. 7. The second means includes: a protocol setting circuit capable of setting a protocol; and, when a received signal matches a self-address, determining a received signal and a protocol from the protocol setting circuit to determine a signal. 6. The elevating type sensing device according to claim 5, further comprising a determination circuit for determining a type. 8. An ascending and descending type sensing device in which an alarm circuit and a sensor are connected via a connector, and when a wireless lowering command is received, a wire is fed out by its own weight, the connector is detached, and a sensor mounting base is lowered. A power line circuit that is connected to the receiving radio unit and the latch release mechanism side of the ceiling-side installed portion of each lifting type sensing device via a test switch, and that supplies power to these devices when the test switch is closed. An alarm circuit for transmitting a test result of a sensor transmitted from the receiving wireless unit, an address given to a sensor mounting base of a lifting type sensing device to be tested, and detection of the address. A radio descent command can be output to the sensor mounting base, and the sensor of the lowered sensor mounting base is tested, and the sensor is tested. A test system for a sensing device, comprising: a sensor test unit capable of outputting a result as a wireless test signal.