JPH0898283A - Amplifier for remote supervisory and controlling system - Google Patents

Abstract

PURPOSE: To provide a remote supervisory and controlling system to which working can easily be applied. CONSTITUTION: A bracket 52 is mounted on each of the upper and lover parts of the body 1 of an amplifier A, respectively. A pair of insertion holes 52a, 52a are provided on the bracket 52. A fixing metal fitting 56 is formed in nearly chevron shape by providing a connecting piece 56a to be connected to the insertion hole 52a on one side on one terminal. Also, a screw hole 56b to be screwed with a fixing screw inserted into the insertion hole 52a on the other side is provided on the other terminal of the fixing metal fitting 56. The amplifier A can easily be mounted on a hanging bolt 60 by holding there between the bracket 52 erected between a concrete ceiling AA and a system ceiling BB and the fixing metal fitting 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amplifier used in a remote monitoring control system for remotely controlling the operation of a load.

[0002]

2. Description of the Related Art Conventionally, there has been provided a load control system which controls a load of a lighting fixture or the like by using a control terminal of this type. For example, as shown in FIG.
A plurality of operation terminals 90 having a plurality of switches S for monitoring the operation state of each switch S, and a plurality of loads L ₁ ...
There is known a remote monitoring and control system in which a plurality of control terminals 91 for controlling the are connected to a transmission processing device 92 via a two-wire transmission line Ls. Individual addresses are set to the operation terminal device 90 and the control terminal device 91, and the transmission processing device 92 individually recognizes the operation terminal device 90 and the control terminal device 91 using the addresses.

The transmission processing device 92 is connected to the transmission line Ls by
The transmission signal Vs having the format as shown in FIG. 9A is transmitted. That is, the transmission signal Vs is a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and an address data signal for transmitting address data for individually calling the operation terminal 90 and the control terminal 91. AD, a control data signal CD for transmitting control data for controlling the load L _1, ..., A checksum data signal CS for detecting a transmission error, and a return data signal from the operation terminal 90 or the control terminal 91. Multi-pole (± 24V) consisting of the signal return period WT which is the time slot
This is a time division multiplex signal and data is transmitted by pulse width modulation.

In each of the operation terminals 90 and the control terminals 91, when the address data transmitted by the transmission signal Vs received via the transmission line Ls matches the preset address data, the transmission signal Vs is transmitted. The control data is fetched from the device and the return data is used as a current mode signal (a signal sent by short-circuiting the transmission lines Ls via an appropriate low impedance) in synchronization with the signal return period WT of the transmission signal Vs. Send it back.

Further, the transmission processing device 92 is provided with dummy signal transmitting means and interrupt signal processing means. The dummy signal transmitting means always sends out a dummy transmission signal in which the mode data signal MD is in the dummy mode. In addition, the interrupt signal processing means, when receiving the interrupt signal Vi as shown in FIG. 9B which is generated in response to the operation of the switch S in any of the operation terminals 90, the operation which generated the interrupt signal Vi. The terminal device 90 is searched, and the address data set in the operating terminal device 90 is returned as reply data (operation data). That is, the dummy signal transmitting means always sends a dummy transmission signal to the transmission line Ls, and the interrupt signal Vi generated from the operation terminal 90 in accordance with the operation of the switch S is synchronized with the start pulse signal ST of the dummy transmission signal. Transmission processing device 9
From 2 the mode data signal M is generated by the interrupt processing means.
Transmission signal Vs in which D is the address confirmation mode is transmitted through transmission line L
send to s. In each operation terminal device 90, an interrupt flag for requesting an interrupt when an interrupt signal Vi is generated is set, and in the operation terminal device 90 in which the interrupt flag is set, the mode data signal MD is the transmission signal Vs in the address confirmation mode. When it receives, the address data set in the operation terminal device 90 is returned as reply data (operation data) in synchronization with the signal return period WT of the transmission signal Vs. In this way, the transmission processing device 92 can acquire the address of the operation terminal device 90 that has generated the interrupt signal Vi.

In the transmission processing device 92, the interrupt signal Vi
When the address of the operation terminal device 90 that has generated
The control data to be transmitted to the control terminal 91 to which the load L ₁ ... Which has a preset correspondence relationship with the switch S is connected is generated, and the transmission signal Vs including the control data is sent to the transmission line Ls to cope with The control data is transmitted to the control terminal 91 for controlling the loads L ₁ ...

In the operation terminal device 90 and the control terminal device 91, the transmission signal Vs transmitted on the transmission line Ls, respectively.
By rectifying and stabilizing the full-wave, the power supply for the operation of the internal circuit is obtained. The loads L _1, ... Connected to the control terminal 91 are supplied with power from a separately provided external power source through the control terminal 91.

Here, since the transmission line Ls becomes long in proportion to the distance from the transmission processing device 92, the transmission signal V _S is attenuated or dull in the middle, or the operation terminal device 90 or the control terminal device. Since the consumption current of the transmission line Ls may exceed the rating when the number of 91 increases, in such a case, as shown in FIG. 8, an amplifier 93 for relaying and amplifying the transmission signal V _S is used. It is necessary to insert it in the middle of Ls. The amplifier 93 is operated by an AC power supplied by the feed wired power line E, the transmission signals V _S to the amplified and transmitted signal V _S attenuation or dullness, or the transmission line Ls transmitted through the transmission line Ls This is to prevent the rating from being exceeded.

[0009]

In the amplifier 93 having the above-mentioned conventional structure, the body 93a thereof is formed so as to correspond to the contract size of the distribution board specified in the Japanese Industrial Standard (JIS), and the power supply line E is Since the terminal portion 93b to be connected is exposed, a box (not shown) is provided in terms of safety when the terminal portion 93b is installed near an inspection port provided on a ceiling surface or the like.
It was stored in. However, if specifications are changed at the time of construction of such a remote monitoring control system, depending on the construction process of a building such as a building to which the remote monitoring control system is introduced, for example, when the interior work is almost completed, Even if the specifications are changed as described above, it is often impossible to secure a space for mounting the amplifier 93 or the box, and the amplifier 93 having the body 93a corresponding to the contract size of the distribution board may be difficult to construct. was there.

An object of the present invention is to solve the above problems, and an object of the present invention is to provide an amplifier of a remote monitoring control system which can be easily installed.

[0011]

In order to achieve the above object, the invention of claim 1 performs transmission processing of an operation terminal and a control terminal each having an address via a two-wire transmission line. Connected to the equipment to send and receive data by time division multiplex transmission signal, the transmission processing equipment sends out the transmission signal including address data to the transmission line to access the operation terminal and the control terminal individually. However, when the operation data from the operation terminal is received during the signal return period set in synchronization with the transmission signal, control data is generated based on the operation data, and the correspondence relationship between the operation terminal that generated the operation data and the address is generated. Is used in a remote monitoring control system that transmits control data to a preset control terminal to control the operation of the control terminal, and operates with a transmission processing device via a transmission line. An amplifier connected to a control terminal or a control terminal and relay-amplifying a transmission signal transmitted from at least a transmission treatment device through a transmission line to an operation terminal or a control terminal, which is a hanging bolt on a system ceiling. It is characterized in that it is provided with an attaching means for attaching to.

The invention of claim 2 is a preferred embodiment of the invention of claim 1, characterized in that the attaching means has an engaging and fixing portion for elastically engaging with the suspension bolt. According to a third aspect of the present invention, in the first or second aspect of the invention, there is provided a quick-connect terminal block for an external power source, which fast-connects a power line connected to an external power source for amplifying a transmission signal, It is characterized in that it is provided with a quick-connecting terminal block for external power supply, which is paired with a quick-connecting terminal block for fast-wiring feed wiring for sending and wiring an external power supply.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the quick-connect terminal block for the external power supply and the feed wiring has an insertion hole into which the power supply line is inserted, and the insertion hole has a diameter of an opening end. The power supply line is of a size that can be inserted with the coating attached, and is formed so that the diameter becomes smaller toward the inside. A fifth aspect of the present invention is characterized in that, in the first to fourth aspects of the present invention, the transmission line is provided with a quick connection terminal block for connecting the transmission lines in a quick connection manner.

[0014]

According to the first aspect of the present invention, the amplifier for relay-amplifying the transmission signal to the operation terminal or the control terminal is provided with the attaching means for attaching to the suspension bolt on the system ceiling. Therefore, the amplifier is suspended on the system ceiling. Since it can be easily attached to the bolt and the amplifier can be arranged near the inspection port without using a box, the design of the remote monitoring and control system is facilitated.

According to the second aspect of the present invention, if the attaching means has the engagement fixing portion that elastically engages with the suspension bolt, the engagement fixing portion elastically engages with the suspension bolt. It can be easily attached. According to the configuration of the invention of claim 3, a quick-connect terminal block for the external power source, which connects the power supply line connected to the external power source for amplifying the transmission signal in a quick-linking manner, and a quick-connect terminal block for the external power source Since it was equipped with a quick-connect type terminal block for quick-wiring that feeds and wires the external power supply in pairs, it became possible to connect the power supply line to the amplifier easily by a quick-connect method. The construction is easy.

In the structure of the invention of claim 4, the quick-connect terminal block for the external power supply and the feed wiring has an insertion hole into which the power supply wire is inserted, and the diameter of the opening end of the insertion hole is covered with the power supply wire. It is a size that can be inserted while attaching, and was formed so that the diameter becomes smaller as it goes inside, so the power supply line can be inserted into the insertion hole of the quick-connect terminal block with the covering attached, It is possible to prevent the core wire of the power supply line from being exposed.

According to the fifth aspect of the invention, since the transmission line fast-connecting terminal block for connecting the transmission lines in a quick-connecting manner is provided, the transmission lines can be easily connected.

[0018]

【Example】

(Embodiment 1) An embodiment of the present invention will be described with reference to FIGS. FIG. 5 shows an example of construction of a remote monitoring control system using the amplifier A of this embodiment, and the configuration other than the amplifier A is common to that of the conventional example. Therefore, common parts are denoted by the same reference numerals, and description thereof is omitted. As shown in FIG. 5, this amplifier A is similar to the conventional amplifier 93 in that the transmission processing device 92 and the operation terminal 90 ₂ are connected via the transmission line Ls.
Is operated by an AC power supply supplied from the outside to amplify the transmission signal transmitted from the transmission processing device 92 via the transmission line Ls and transmits the amplified transmission signal to the operation terminal device 90 ₂ . The return signal transmitted from the terminal device 90 ₂ to the transmission processing device 92 via the transmission line Ls is relayed. The transmission signal transmitted from the transmission processing device 92 has the format shown in FIG. 9 as in the conventional example.

FIG. 2 shows the circuit configuration of the amplifier A of this embodiment.
You This amplifier A has an input side circuit block CB.₁And output
Side circuit block CB₂And both of these circuit blocks
CB ₁, CB₂Is a photo coupler PC described later₁, PC₂
And are electrically isolated from each other.
Input side circuit block CB₁From the transmission processor 92
Input terminal 10 connected to transmission line Ls₁, 10₂And the biography
It is transmitted from the transmission processing device 92 via the transmission line Ls.
Transmission signal is diode bridge DB₁Receive through
The signal receiving circuit 11 and the signal receiving circuit 11 are connected in parallel.
Photo coupler PC₁Output described later by
Side circuit block CB₂Optical connection with signal waveform shaping circuit 22
Signal transmission circuit 12 and diode bridge DB₁
The constant voltage circuit 13 that obtains a constant voltage from the output of
Output side circuit block CB₂Return signal receiver circuit
26 and photo coupler PC₂Optical connection by
Return signal reception times to receive the returned return signal
Route 14 and receive return signal to diode bridge DB
₁Via the input terminal 10₁, 10₂On the transmission line Ls
Return signal transmitting circuit 15 for transmitting, and output side circuit block
CB₂Noise removal to remove noise from the return signal from the
And a circuit 16.

On the other hand, the output side circuit block CB₂Is external
Power supply end for connecting to AC power supply and receiving power supply
Child 20 and step-down tiger whose primary side is connected to the power supply terminal 20
And a diode block on the secondary side of this step-down transformer T.
Ridge DB₂And smoothing capacitor C₁And the constant voltage circuit 21
Connected via the input side circuit block CB ₁
Signal transmission circuit 12 and photo coupler PC₁By light contact
The continued signal waveform shaping circuit 22 and this signal waveform shaping circuit
A signal drive circuit 23 controlled by the output of the path 22,
A pair of 3-terminal regulators connected to the output terminal of the drive circuit 23.
Lator 24₁, 24₂And 3 terminal regulator 24₁，
24₂To the output terminal of the surge absorber Z₁~ Z₃Through
Output terminal 25 provided₁~ 25₃And output terminal 25₁
~ 25₃Terminal for operation via the transmission line Ls connected to the
90₂While receiving the return signal transmitted from
Photo coupler PC₂Input side circuit block CB₁
Return signal receiver connected to the return signal receiving circuit 13
Circuit 26 and output terminal 25 ₁~ 25₃Detect short circuit between
The transmission line short circuit detection circuit 27 and the short circuit of the transmission line Ls are displayed.
And a short circuit display circuit 28.

The signal receiving circuit 11 of the input side circuit block CB ₁ has one input terminal 10 ₁ and a diode bridge D.
Are those Zener diode ZD ₁ is formed by connecting through a resistor R ₁ between an output end of the B _1, the signal transmitting circuit 12 across the series circuit between the resistor R ₁ and the Zener diode ZD ₁ a light emitting diode LD ₁ of the series circuit is connected between the transistor Q ₁ for driving the light emitting diode LD _1. In addition, this light emitting diode L
D ₁ constitutes the photocoupler PC ₁ .

When a transmission signal is transmitted as a bipolar signal between the input terminals 10 ₁ and 10 ₂ through the transmission line Ls, one input terminal 10 ₁ has a higher potential than the other input terminal 10 ₂ . At this time, a constant voltage corresponding to the Zener voltage of the Zener diode ZD ₁ is generated at the output terminal of the signal receiving circuit 11. On the contrary, when the input terminal 10 ₁ has a lower potential,
Since the Zener diode LD ₁ becomes conductive, the voltage between the output terminals of the signal receiving circuit 11 becomes substantially zero. Then, when the constant voltage is output from the signal receiving circuit 11, the transistor Q ₁ of the signal transmitting circuit 12 is turned on and the light emitting diode LD constituting the photocoupler PC ₁ is formed.
_{When 1} is turned on and the output from the signal receiving circuit 11 is substantially zero, the transistor Q ₁ is turned off and the light emitting diode LD ₁ is turned off. Therefore, the signal receiving circuit 11 and the signal transmitting circuit 12 can transmit the transmission signals transmitted from the input terminals 10 ₁ and 10 ₂ to the output side circuit block CB ₂ via the photocoupler PC ₁ .

On the other hand, a photo coupler PC₁Of the
Transistor Q₂Embedded in the signal waveform shaping circuit 22
The constant voltage output from the constant voltage circuit 21 is divided.
And then two comparator ICs₁, IC₂Each different
Voltage dividing resistor R for providing a fixed reference voltage₂~ R_FourAnd series
Connected transistor Q₃To turn on and off
ing. Here, the signal waveform shaping circuit 22 is
Plastic PC₁Phototransistor Q₂And the voltage dividing resistance
R₂~ R_FourAnd transistor Q₃And a series circuit with
Comparator IC₁, IC₂It has and. One side
Comparator IC ₁The non-inverting terminal of is a resistor R₂And resistance R₃When
Connected to the connection point of the other comparator IC₂Inversion of
Terminal has resistance R₃And resistance R_FourIs connected to the connection point with
It Also, two comparator ICs₁, IC₂The rest of
Terminal (comparator IC₁Inverting terminal and comparator
IC₂Is the Zener diode ZD₂Contact
The zener voltage is constantly input as the reference voltage.
Has been done. Therefore, the transistor Q₃Is off
When it comes to comparator IC₁Non-inverting terminal and the other
Parator IC₂The voltage input to the inverting terminal of
Since it is lower than the pressure, each comparator IC₁, IC₂
Outputs "L" and "H", respectively. On the contrary, Transis
Q₃When is on, each comparator IC₁, IC₂
Outputs "H" and "L", respectively.

The output terminals of the _two comparators IC ₁ and IC ₂ are respectively connected to the bases of the four transistors Qa to Qd forming the signal drive circuit 23. These four transistors Qa to Qd form a bridge circuit connected to the diode bridge DB ₂ , the transistors Qa and Qc are NPN type, the transistors Qb and Qd are PNP type, and the transistors Qa and Qd are The bases are commonly connected to the output terminal of the comparator IC ₁ , and the bases of the transistors Qc and Qd are commonly connected to the output terminal of the comparator IC ₂ . Therefore, the comparator I
When the output of C ₁ is "H", the transistor Qa is turned on and the transistor Qb is turned off.
When it is L ", the transistor Qa is turned off and the transistor Qb is turned on. Similarly, the output of the comparator IC ₂ is" H "/" L ", and the transistor Qc is turned on / off.
Off, the transistor Qd turns off / on.

Further, the transistor Qa and the transistor Q
The input terminal of the three-terminal regulator 24 ₁ is connected to the connection point with b, and the input terminal of the three-terminal regulator 24 ₂ is connected to the connection point between the transistor Qc and the transistor Qd. And these two 3-terminal regulators 2
4 _1, 24 ₂ of the ground terminals are commonly connected is connected to the ground terminal 25 _3, 3-terminal regulator 24 _1, 24 ₂
Output terminals are connected to output terminals 25 ₁ and 25 ₂ , respectively.

[0026] Therefore, the two outputs of the comparator IC _1, IC ₂ mutual signal waveform shaping circuit 22 in accordance with the transmission signal transmitted from the input-side circuit blocks CB ₁ "
H "and" L ", so that the transistors Qa to
The bridge circuit of Qd becomes conductive. That is, the output of the comparator IC ₁ is “H” and the output of the comparator IC ₂ is “H”.
When L ", the transistor Qa and the transistor Qd
Are turned on, the transistors Qb and Qc are turned off, one three-terminal regulator 24 ₁ is turned on, and the other three-terminal regulator 24 ₂ is turned off. On the contrary, when the output of the comparator IC ₁ is “L” and the output of the comparator IC ₂ is “H”, the three-terminal regulator 24 ₁ is turned off and the three-terminal regulator 24 ₂ is turned on, resulting in the output terminal 25 ₁ , 25 ₂ , the transmission signal is output at the _double pole, and the input terminals 10 ₁ , 10
_The transmission signal input between ₂ is amplified and output terminal 2
It is output from between 5 ₁ and 25 ₂ .

On the other hand, a return signal returned from the operation terminal device 90 ₂ to the transmission processing device 92 is input to the output terminals 25 ₁ and 25 ₂ . The return signal is transmitted in the operation terminal 90 _{2 by making} the transmission lines Ls into a substantially short-circuited state, and by making the transmission lines Ls into a substantially short-circuited state, the return signal is transmitted to the collectors of the transistors Qb and Qd. The current flowing through the detection resistor R ₀ inserted between the diode bridge DB ₂ and the diode bridge DB ₂ changes. The detection resistor R ₀ constitutes the return signal receiver circuit 26, and one end thereof is connected to the inverting terminal of the comparator IC ₃ . Further, the non-inverting terminal of the comparator IC ₃ is connected to the cathode of the Zener diode ZD ₂ , and the other end of the detection resistor R ₀ is connected to the anode of the Zener diode ZD ₂ . Therefore, the output terminals 25 ₁ , 25
_{When a} short circuit occurs between the two terminals, the voltage across the detection resistor R ₀ rises and the output of the comparator IC ₃ changes from “H” to “L”, and the light emitting diode LD ₂ connected to the output terminal of the comparator IC ₃ is turned on. Turn on the light. This light emitting diode LD
₂ constitutes a photocoupler PC _2, the input circuit block C by the light emitting diode LD ₂ is turned
Phototransistor Q ₄ of the return signal receiving circuit 14 of B ₁
Turns on. As a result, the return signal input from the output terminals 25 ₁ and 25 ₂ to the output side circuit block CB ₂ is transmitted to the input side circuit block CB ₁ .

On the other hand, as described above, the photocoupler PC₂To
The return signal receiving circuit 14 through which the return signal is transmitted is
Phototransistor Q_FourTran turned on / off by
Dista Q_FiveIn addition, this transistor Q
_FiveIs a diode bridge DB ₁Connected between the output ends of
Transistor Q of return signal transmission circuit 15₆On / off
And diode bridge DB₁Between the output terminals of
Input terminal 10₁, 10₂Transmission via the transmission line Ls
The return signal is sent back to the sending processor 92.

By the way, the output side circuit block CB₂To
Detects a short circuit of the transmission line Ls due to any accident.
The transmission line short-circuit detection circuit 27 is provided. This transmission line
In the short circuit detection circuit 27, the detection resistor R₀Both
The terminal voltage is monitored to detect a short circuit in the transmission line Ls.
Comparator IC_FourZener diode to the non-inverting terminal of
ZD₂Input the reference voltage obtained by dividing the Zener voltage of
Detection resistance R₀Voltage across the resistor is the resistance R_FiveAnd capacitor
C₃Comparator IC via time constant circuit with_FourInversion of
It is input to the terminal. Therefore, the operation terminal 90
₂Very short time for sending a return signal
In the closed state, the resistance R_FiveAnd capacitor C₃And time constant circuit
For comparator IC_FourDo not raise the inverting input of
Comparator IC_FourOutput is from "H" to "L"
Do not flip to. However, due to other reasons, the above time constant times
When the transmission line Ls is short-circuited for a time exceeding the time constant of the road
Is a comparator IC_FourOutput changes from "H" to "L"
Invert. And the comparator IC_FourConnected to the output end of
Light emitting diode LD of the transmission line short circuit display circuit 28 ₃
Lights up and informs that the transmission line Ls has been short-circuited
Has become.

Further, the input side circuit block CB ₁ is provided with a noise removing circuit 16 having an integrated circuit IC ₅ . The noise removing circuit 16 has input terminals 10 ₁ , 1
The output of the OS4 terminal of the integrated circuit IC ₅ is set to “H” only when the transmission signal input from the signal 0 ₂ is in the return period WT.
Is connected to the base of the phototransistor Q ₄ of the photocoupler PC ₂ . That is, even if the driving current for driving the load driving relay is erroneously transmitted via the transmission line Ls, the OS4 of the integrated circuit IC ₄ is prevented from being transmitted as a return signal. when the output terminal is "H" only has to turn on and off the phototransistors Q ₄ in accordance with the turning on and off of the light emitting diode LD _2. With this configuration, the correct return signal and the interrupt pulse can be transmitted without transmitting the return signal by mistake.

FIG. 3 shows an exploded perspective view of the amplifier A of this embodiment. The body 1 of the amplifier A includes a box-shaped body 1a having an open upper surface, and a cover 1b attached to the body 1a.
The overall shape is a rectangular parallelepiped box that corresponds to the distribution board agreement size. Inside the body 1, a printed circuit board 2 in which the above-mentioned input side circuit block CB ₁ and output side circuit block CB ₂ are formed and a transformer box 5 in which a step-down transformer T is installed, an AC power source from the outside A quick-connect terminal block 3 ₁ for external power supply for connecting the power supply line E for receiving supply, a fast-connect terminal block 3 ₂ for feed wiring for sending and wiring the power supply line E paired with this, and transmission a pair of quick connect terminal block 4 ₁ for input and output connecting lines Ls fast binding equation 4 ₂ is housed.

On both sides of the body 1, quick connection is stored inside.
Terminal block 3₁, 3₂Expose the connection surface of the power line E of
Connection hole 6 is formed. On one end of the printed circuit board 2
A heat sink 7 having a substantially U-shape is attached. Also cover
One end of the printed circuit board 2 is formed in the groove 8 formed inside 1b.
Part is inserted and the printed circuit board 2 is placed inside the cover 1b.
Stored upright. This printed circuit board 2 is
The lead wire 9 derived from the inductance box 5
The transformer box 5 is connected to the secondary side of the transformer T.
Covers the screw insertion hole 30b formed on the back surface of the cover 1b.
Via the mounting piece 5a of the transformer box 5 via
The fixing screw 30a is screwed and fixed to the hole 5b.
The primary side of the step-down transformer T is also a transformer box.
The lead wire 32 derived from the spacer 5 is used as the connection substrate 33.
It is connected. The power supply line E is connected to the connecting board 33.
Quick-connect terminal block 3 on the side to be connected₁Output terminal 3a
Connected. Furthermore, two quick-connect terminal blocks 3 ₁, 3
₂Are connected to each other by lead wires 34, and these leads
Line 34 is the quick-connect terminal block 3₁, 3₂Solder to the terminal board of
Be injured.

Connection holes 6 formed on both sides of the body 1
Are formed of the body 1a and the recesses 6a and 6b formed on both side walls of the cover 1b. The accommodating portion 35 of each quick-connect terminal block 3 has substantially U-shaped ribs 35a, 3 that surround the quick-connect terminal block 3 together with both side walls of the body 1a and the cover 1b.
5b, the rear end wall of the rib 35b is made low in height so that the terminal portion 38b of the quick-connect terminal block 3 described later can be led out to the printed circuit board 2 side.

Further, the fast-connecting terminal blocks 4 ₁ , 4 ₂ to which the transmission line Ls is connected are fixed by screwing the fixing screw 36a to the screwing portion 36b formed on the back surface of the cover 1b. In addition, the transmission line Ls is provided on the back surface of the cover 1b.
Through holes 37, 37 are formed to expose the connection surfaces of the quick-connect terminal blocks 4 ₁ , 4 _{2 to which} is connected. As shown in Fig. 4, the quick-connect terminal blocks 3 ₁ and 3 ₂ are rectangular parallelepiped boxes, and have a thin wall on the power wire insertion surface side and a thick wall on the rear end side. It has a so-called quick-connect structure composed of the terminal plate 38, the lock spring 39 and the release button 40, and these quick-connect structure members are housed in a housing 41 composed of a body 41a and a cover 41b. . The body 41a and the cover 41b are coupled to each other by inserting the locking studs 42 into the insertion holes 43b and 43a and caulking them.

The terminal plate 38 is a so-called terminal plate portion 38a having a U-shape that opens laterally so as to elastically sandwich the core wire of the power supply line E together with the lock spring 39 at one end, and the other end is connected to a printed circuit board described later. It becomes the terminal part 38b which does. Then, the terminal plate 38 is provided between the terminal plate portion 38a and the terminal portion 38b.
A fixing portion 38c for fixing the to the body 41a is formed. The terminal portion 38b has a shape in which the tip is bent downward in an L shape, and the base portion of the hanging piece is curved.
The fixing portion 38c is formed as a concave portion having a narrowed opening edge at the lower end.

The lock spring 39 has a locking piece 39a for locking the inserted core wire to prevent the core wire from coming off, and an elastic piece 39b for elastically holding the inserted core wire between the upper piece of the terminal plate 38 and the locking piece 39a.
And is inserted into the terminal plate portion 38a of the terminal plate 38 from the side, and the bent portion 43 and the mounting pieces 44 and 45 formed on the terminal plate portion 38a are positioned and attached at predetermined positions.

The release button 40 is used to release the elastically pinched state of the core wire between the lock spring 39 and the terminal plate 38 when the power supply line is removed. The release button 40 is arranged above the terminal plate 38 and vertically hangs down. The three release pieces 40a release the holding state of the core wire by each lock spring 39 and the terminal plate 38 at once. Here, a cutout 46 through which the release piece 40a of the release button 40 is inserted is provided on the upper piece of the terminal plate portion 38a of the terminal plate 38.

The thin portions of the body 41a and the cover 41b are provided with recesses 47a and 47b forming insertion holes 47 through which the power supply lines E inserted through the connection holes 6 are inserted. Here, the insertion hole 47 is of a size such that the power supply line E can be inserted with the coating at the opening end, and the diameter becomes smaller toward the inside, and the portion with the coating is inserted into the insertion hole 4
It can be inserted into the inside of the terminal 7, and the core wire is surely guided between the lock spring 39 and the upper piece of the terminal plate portion 38a of the terminal plate 38.

On the rear end side of the body 41a, three storage recesses 48 continuous with the insertion holes 47 are formed.
The terminal plate 38 and the lock spring 39 are housed therein. here,
A fitting recess 49 is formed in the rear end wall of the housing recess 48, and the fixing portion 38c of the terminal plate 38 is fitted into the fitting recess 49 to fix the terminal plate 38. A portion of the cover 41b corresponding to the accommodating recess 48 is entirely recessed, and a pressing convex portion 50 for pressing the upper surface of the terminal plate 38 is formed in a portion near the rear end, and the front end of the pressing convex portion 50 is formed. Release button 40 on the side
Is stored. An opening 51 for releasing, which exposes the convex portion 40b formed on the front end side of the release button 40, is formed on the side surface portion of the thick portion.

In this embodiment, when the power supply wire E whose tip is stripped off is inserted into the power supply wire insertion hole 47 of the quick-connect terminal blocks 3 ₁ and 3 ₂ through the connection hole 6, the locking piece 3 of the lock spring 39 is inserted.
The core wire is elastically held between 9a and the elastic piece 39b, and the locking piece 39a is locked to the core wire to prevent the power supply line E from coming off. Moreover, since the part of the power supply line E covered with the coating is partly inserted into the insertion hole 47, the core wire is not exposed, and an accident such as an electric shock due to contact with the core wire can be prevented. . Then, when it becomes necessary to remove the power line E, when the tip of a tool such as a driver is inserted through the opening 51 for releasing and the release button 40 is operated,
The release piece 40a of the release button 40 is the locking piece 39a of the lock spring 39.
The unlocked state of the power supply line E can be released by this. Although not described, the quick-connect terminal blocks 4 ₁ , 4 ₂ have substantially the same structure as the quick-connect terminal blocks 3 ₁ , 3 ₂ . In the case of the present embodiment, the power supply line E for supplying power to the load can determine the length of the power supply line before construction and can be processed in the factory to that length, thus improving work efficiency. You can

The amplifier A of this embodiment is provided with mounting metal fittings 52 at both ends of the body 1 for mounting on the construction surface. One end of this mounting bracket 52 is fitted into the recesses 53 formed at both ends of the body 1a, and the cover 1b and the body 1 are attached.
The fixing screw 55 is screwed through the insertion holes 54a and 54b formed so as to communicate with a, and is attached to the body 1, and at the same time, the body 1a and the cover 1b are fixed.

Using the mounting bracket 52, the amplifier A can be mounted on the suspension bolt 60 installed between the concrete ceiling a and the system ceiling b shown in FIG. That is, the locking piece 56a inserted and locked in one of the pair of mounting holes 52a formed in the mounting metal fitting 52.
And using a fixing bracket 56 formed in a substantially V shape,
By fixing the fixing screw 57 to the screw hole 56 b formed at the end of the fixing member 56, the hanging bolt 60 can be clamped and fixed between the mounting member 52 and the fixing member 56. Further, as another fixing member 58, one shown in FIG. 6 may be used. That is, the mounting hole 52 of the mounting bracket 52
A fixing metal fitting 58, which has screw holes 58a corresponding to a and is formed in a substantially U-shaped cross section, is used.
The 2 and the fixing fitting 58 are screwed with the two fixing screws 57, so that the hanging bolt 60 can be clamped and fixed.

In this embodiment, since the body 1 of the amplifier A is formed to have a size corresponding to the contract size of the distribution board, it is arranged in the distribution board as in the conventional case, or the mounting metal fitting is attached. It is also possible to use 52 to attach to a construction surface such as a wall surface with a fixing screw. (Embodiment 2) This embodiment is characterized by a mounting structure for mounting the amplifier A on the suspension bolt 60, and the basic configuration including the configuration of the amplifier A itself is common to that of the first embodiment. Therefore, common parts are denoted by the same reference numerals, and description thereof will be omitted.

The amplifier A according to this embodiment has upper and lower mounting brackets 5.
It is attached to the suspension bolt 60 by using different fixing brackets 61 and 62 for the two. First, the fixed metal fitting 61 corresponding to the upper side of the mounting bracket 52 ₁ is engagement piece to tip the engaging hole 52b bored so as to be sandwiched between a pair of mounting holes 52a of the mounting member 52 is engaged 61b
And a substantially V-shaped fixing metal fitting body 61a fixed by an engaging piece 61b and a screw 63.
Engagement fixing portions 61c that are elastically engaged with the suspension bolts 60 are formed at the tips of both leg pieces of a. That is, the fitting fixing portions 61c formed on both legs of the fixing fitting body 61a are elastically engaged with the suspension bolt 60 to fix the fixing fitting 61, and the fitting fitting 52 ₁ for the amplifier A is attached to the tip of the engaging piece 61b. The amplifier A is suspended from the fixing metal fitting 61 by engaging with the engaging hole 52b.

On the other hand, the fixing metal fitting 62 corresponding to the lower mounting metal fitting 52 ₂ is a bendable rod-shaped body, and
2 _{2 and} a pair of mounting holes 52a, and is wound around and fixed to the suspension bolt 60 by the two fixing brackets 6
The amplifier A is attached and fixed to the suspension bolt 60 at 1, 62.

[0046]

According to the first aspect of the present invention, the operation terminal device and the control terminal device each having an address are connected to the transmission processing device via the two-wire type transmission line, and the time-division multiplexed transmission signal is used. The transmission / reception of data is performed, and the transmission processing device individually accesses the operation terminal and the control terminal by sending out a transmission signal including address data to the transmission line, and returns a signal set in synchronization with the transmission signal. When the operation data from the operation terminal is received during the period, the control data is generated based on the operation data, and the correspondence between the operation terminal that generated the operation data and the address is set in advance for the control terminal. It is used in a remote monitoring and control system that transmits control data to control the operation of the control terminal, and is connected to the transmission processing device and the operation terminal or the control terminal via a transmission line. An amplifier which relays and amplifies at least a transmission signal transmitted from a transmission treatment device through a transmission line to an operation terminal or a control terminal, and has an attaching means for attaching to a suspension bolt on the system ceiling. Since the amplifier can be easily attached to the hanging bolt on the ceiling and the amplifier can be arranged near the inspection port without using a box, there is an effect that the design of the remote monitoring control system becomes easy. Further, as in the invention of claim 2, if the attaching means has the engaging fixing portion which elastically engages with the hanging bolt, the engaging fixing portion elastically engages with the hanging bolt to facilitate the mounting. There is an effect that can be attached to.

According to a third aspect of the present invention, a quick-connect terminal block for an external power source for connecting a power supply line connected to an external power source for amplifying a transmission signal in a quick-connect manner, and a quick-connect terminal block for an external power source. Since it is equipped with a quick-connecting terminal block for fast-wiring that feeds and wires an external power supply, the power supply line can be easily connected to the amplifier by a fast-connecting amplifier. There is an effect that the construction of is easy.

According to a fourth aspect of the present invention, the quick-connect terminal block for external power supply and feed wiring has an insertion hole into which the power supply line is inserted, and the insertion hole is covered with the power supply line at the diameter of the opening end. It is a size that can be inserted as it is, and it is formed so that the diameter becomes smaller as it goes inside, so the power supply line can be inserted into the insertion hole of the quick-connect terminal block with the covering attached, and the power supply line can be inserted. It is possible to prevent the core wire from being exposed, and it is possible to prevent an electric shock accident and improve safety.

Since the fifth aspect of the present invention is provided with the quick connect terminal block for connecting the transmission lines in a quick connect manner, there is an effect that the connection of the transmission lines becomes easy.

[Brief description of drawings]

1A and 1B show a first embodiment, in which FIG. 1A is a plan view showing a state where an amplifier is attached to a suspension bolt, and FIG. 1B is a perspective view showing a main part of FIG. 1A.

FIG. 2 is a circuit configuration diagram of the above.

FIG. 3 is an exploded perspective view of the above.

FIG. 4 is an exploded perspective view of a quick-connect terminal block for the external power supply and for the feed wiring in the above.

FIG. 5 is a schematic configuration diagram showing a construction example of a remote monitoring control system using the same as above.

6A and 6B show another example of the above, wherein FIG. 6A is a plan view showing a state where an amplifier is attached to a suspension bolt, and FIG. 6B is a perspective view showing a main part of FIG. 6A.

7 (a) and 7 (b) are views for explaining a mounting state of the suspension bolt of the second embodiment.

FIG. 8 is a schematic configuration diagram showing a construction example of a remote monitoring control system using a conventional amplifier.

9A and 9B are diagrams showing the signal format of the same.

[Explanation of symbols]

 A Amplifier 52 Mounting bracket 55 Fixing screw 56 Fixing bracket 60 Hanging bolt b Concrete ceiling b System ceiling

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 21, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

On the other hand, the output side circuit block CB₂Is external
Power supply end for connecting to AC power supply and receiving power supply
Child 20 and step-down tiger whose primary side is connected to the power supply terminal 20
And a diode block on the secondary side of this step-down transformer T.
Ridge DB₂And smoothing capacitor C₁And the constant voltage circuit 21
Connected via the input side circuit block CB ₁
Signal transmission circuit 12 and photo coupler PC₁By light contact
The continued signal waveform shaping circuit 22 and this signal waveform shaping circuit
A signal drive circuit 23 controlled by the output of the path 22,
Output end of drive circuit 23ToPage absorber Z₁~ Z₃Through
Output terminal 25₁~ 25₃And output terminal 2
5₁~ 25₃End for operation via transmission line Ls connected to
End device 90₂When receiving the return signal transmitted from
MONI photo coupler PC₂Input side circuit block C
B₁Return signal receiver connected to the return signal receiving circuit 13 of
Server circuit 26 and output terminal 25₁~ 25₃Detect short circuit between
The short circuit between the transmission line short circuit detection circuit 27 and the transmission line Ls
And a short circuit display circuit 28 for displaying.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

On the other hand, a photo coupler PC₁Of the
Transistor Q₂Embedded in the signal waveform shaping circuit 22
The constant voltage output from the constant voltage circuit 21 is divided.
Then twoOperational amplifierIC₁, IC₂Each different
Voltage dividing resistor R to provide the reference voltage₂~ R_FourAnd series connection
Continued transistor Q₃To turn on and off
ing. Here, the signal waveform shaping circuit 22 is
La PC₁Phototransistor Q₂And the voltage dividing resistor R
₂~ R_FourAnd transistor Q₃And a series circuit withOh
PeamplifierIC₁, IC₂It has and. OneOpear
PumpIC₁The non-inverting terminal of is a resistor R₂And resistance R₃Connection with
Connected to a point and the otherOperational amplifierIC₂The inverting terminal of
Anti-R₃And resistance R_FourIt is connected to the connection point with. Also,
TwoOperational amplifierIC₁, IC₂The remaining terminals of (Opear
PumpIC₁Inverting terminal andOperational amplifierIC₂Non-inverted end of
Child) is a Zener diode ZD₂Connected to, always constant
Zener voltage of is input as the reference voltage. did
Therefore, transistor Q₃Is off,Opean
TheIC₁Non-inverting terminal and the otherOperational amplifierIC₂Inversion of
The voltage input to the terminal is lower than the reference voltage.
EachOperational amplifierIC ₁, IC₂Output of each
L "," H ". Conversely, the transistor Q₃Is on
Sometimes eachOperational amplifierIC₁, IC₂Output of each
It becomes H "and" L ".

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

The output terminals of the _two operational amplifiers IC ₁ and IC ₂ are respectively connected to the bases of the four transistors Qa to Qd forming the signal drive circuit 23. These four transistors Qa to Qd form a bridge circuit connected to the diode bridge DB ₂ , the transistors Qa and Qc are NPN type, the transistors Qb and Qd are PNP type, and the transistors Qa and Qd are Base is operational amplifier I
The output terminal of C ₁ is commonly connected, and the bases of the transistors Qc and Qd are commonly connected to the output terminal of the operational amplifier IC ₂ . Therefore, when the output of the operational amplifier IC ₁ is "H", the transistor Qa is on and the transistor Qb is off. On the contrary, when the output is "L", the transistor Qa is off and the transistor Qb is on. Similarly, the output of the operational amplifier IC ₂ is "H" / "
With respect to L ″, the transistor Qc is turned on / off and the transistor Qd is turned off / on.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

Further, the transistor Qa and the transistor Q
Output terminals 25 _1, respectively Re Waso to the connection point of the b, 25 ₂ are contact <br/> connection.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

[0026] Therefore, the two outputs of the operational amplifier IC _1, IC ₂ mutual signal waveform shaping circuit 22 in accordance with the transmission signal transmitted from the input-side circuit blocks CB ₁ "
H "and" L ", so that the transistors Qa to
Qd of the bridge circuit is conductive, the result manner the output terminal 25
_A transmission signal is output with a _double pole between ₁ and 25 ₂ , and the transmission signal input between the input terminals 10 ₁ and 10 ₂ is amplified and output from the output terminals 25 ₁ and 25 _2. Of.

Claims (5)

[Claims] 1. An operation terminal and a control terminal each having an address are connected to a transmission processing device via a two-wire type transmission line, and data is transmitted / received by a time-division multiplex transmission signal and transmitted. The processing device individually accesses the operation terminal and the control terminal by sending out a transmission signal containing address data to the transmission line, and the operation terminal sends the signal from the operation terminal during the signal return period set in synchronization with the transmission signal. When the control data is received, the control data is generated based on the control data, and the control data is transmitted to the control terminal that has a preset correspondence between the control terminal that generated the control data and the address. It is used in a remote monitoring control system that controls the operation of a control terminal, and is connected to a transmission processing device and an operation terminal or a control terminal via a transmission line to perform at least a transmission procedure. An amplifier for relaying and amplifying a transmission signal transmitted from a device through a transmission line to an operation terminal or a control terminal, the remote monitoring control comprising mounting means for mounting to a suspension bolt on a system ceiling. System amplifier. 2. The amplifier for a remote monitoring and control system according to claim 1, wherein the mounting means has an engagement fixing portion that elastically engages with the suspension bolt. 3. A quick-connect terminal block for an external power source, which connects a power supply line connected to an external power source for amplifying a transmission signal in a quick-linking manner, and a quick-connect terminal block for an external power source, which are paired. An amplifier for a remote monitoring and control system according to claim 1 or 2, further comprising: a quick-connect terminal block for fast-wiring feed wiring for feeding an external power source. 4. The quick-connect terminal block for external power supply and feed wiring is provided with an insertion hole into which a power supply line is inserted, and the insertion hole can be inserted while the diameter of the opening end is covered by the power supply line. 4. The amplifier for a remote monitoring and control system according to claim 3, wherein the amplifier has a size and is formed so that a diameter thereof becomes smaller toward the inside. 5. The amplifier for a remote monitoring and control system according to claim 1, further comprising a quick-connect terminal block for the transmission line, which connects the transmission lines in a quick-connect manner.