JPH0617410Y2 - Remote control terminal - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a remote control terminal device that receives a transmission signal transmitted from a central control device and controls a load.

BACKGROUND ART Conventionally, a central control unit and a large number of terminals having unique addresses are connected by a pair of signal lines, and each terminal unit is accessed from the central control unit so that monitoring data and control data are time-division multiplexed. In the remote monitoring and control system, the control terminal that receives the transmission signal transmitted from the central control device and controls the load is generally designed so that the signal line and the load circuit wiring are directly connected. However, there was a problem that replacement in case of failure was troublesome.
Therefore, there was one in which the control terminal was divided into a terminal main body and a terminal block, and both were detachably connected by a blade connection, but on the bottom surface of the terminal main body a signal connection blade When the blade blade for connecting the load circuit is projected, there is a problem that a trouble may occur due to the terminal device body being reversely connected to the terminal block.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to easily cope with a failure of a control terminal device, and moreover, to mount the terminal device body on a terminal block. (EN) Provided is a remote control terminal device capable of avoiding a trouble caused by being reversely attached to the.

DISCLOSURE OF THE INVENTION (Structure) The present invention is a remote control device that fetches control data transmitted from a central control unit through a pair of signal lines when the self is accessed and drives an output relay. A control terminal device, in which a signal transmission means and an output relay are built in a terminal device case, and a pair of blades for signal connection and a pair of blades for connecting a load circuit are provided on a lower surface of the terminal device case. A terminal body, a wiring terminal to which a signal line, a load circuit wiring is connected, and a blade receiving portion into which the above blades are inserted and connected are formed on the upper surface of the terminal block case, and a metal fitting for each blade receiving portion is provided. It is composed of a terminal block that internally connects each wiring terminal, and by making the opposing intervals of both blades and blade receiving portions that make a pair different, it is possible to easily respond to a failure of the control terminal, and , The terminal body is the terminal block There is provided a remote control terminal unit which can avoid troubles due to be mounted.

(Embodiment) FIG. 6 (a) is a diagram showing a schematic configuration example of a remote monitoring and controlling system of the present invention, in which a central control unit 1, a plurality of monitoring terminals 2 having unique addresses and a control are provided. The transmission signal V _S sent from the central control unit 1 to the signal line 4 is connected to the terminal 3 for use by a pair of signal lines 4 as shown in FIG.
As shown in (b), a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, an address data signal AD for calling the terminals 2 and 3, a load L ₁
Is a multi-pole (± 24V) time division multiplex signal consisting of a control data signal CD for controlling L ₄ ; a checksum data signal CS; and a return standby signal WT for setting a return period from the terminals 2 and 3, and is a pulse. Data is adapted to be transmitted by width modulation. Each of the terminals 2 and 3 fetches the control data of the transmission signal V _S when the address data of the transmission signal V _S received via the signal line 4 and its own unique address data match, and at the same time, transmits the transmission signal V _{S. In} synchronism with the return standby signal WT of _S , the monitor data signal is returned as a current mode signal (a signal which is sent by short-circuiting between the signal lines 4 via an appropriate low impedance).

Further, to the central control unit 1, dummy signal transmitting means for constantly transmitting the dummy transmission signal V _{S in} which the mode data signal MD is set to the dummy mode, and any one of the monitoring terminals 2 shown in FIG. When an interrupt signal V _i as shown in (1) is received, an interrupt processing means for detecting the interrupt generating terminal device 2, accessing the terminal device 2 and returning the monitoring data is provided. On the other hand, when the monitor terminal 2 receives a monitor input by operating the switches S _{1 to} S _4, the interrupt signal V _i is generated in synchronization with the start pulse signal ST of the dummy transmission signal V _S. At the same time, an interrupt generating means for returning its own unique address data in synchronization with the return waiting signal WT of the transmission signal V _{S in} the address confirmation mode from the central control unit 1, and an interrupt access mode responding to the interrupt from the central control unit 1. And a data returning means for returning the monitoring data corresponding to the monitoring input when the transmission signal V _S is transmitted. In addition, the central controller 1
Then, the control data to be transmitted to the control terminal device 3 is created based on the monitor data returned from the monitoring terminal device 2 to the central control device 1, and is transmitted to the control terminal device 3 to load L ₁ ... It is designed to control L ₄ . The control terminal 3 arranged in the distribution board 6 or the relay control board 6a has a contracted size according to the distribution board, and the control output thereof causes a remote control relay for load control (also turned on by a hand switch). , Latching relay that can be turned off) 5
Are controlled.

FIG. 7 (a) shows the circuit configuration of the control terminal device 3,
The control terminal device 3 includes a power supply circuit 10 that forms a circuit power supply from a transmission signal V _S transmitted through the signal line 4, and a transmission signal.
A signal processing circuit 11 that receives V _S , performs signal processing, forms a return signal V _B , and transmits the signal, an address setting unit 12 that sets a unique address, and 4 circuits when controlling one load. Of the control circuits (corresponding to the control data bits of 4 bits) of which the load is controlled by the circuit number setting unit 13, the drive circuit 14 for driving the load control relay circuit 15, The signal processing circuit 11 detects a match between the address data of the transmission signal V _S and the unique address, and when the address match is detected, the control data is fetched to set the circuit number. A control output is formed on the basis of the bit selected by the section 13 to drive the output relay 15, and is returned based on a load monitoring input input via the monitoring circuit 16. It is adapted to return to the central control unit 1 by a return signal V _B of the current mode to form monitoring data. When the circuit number setting unit 13 is not provided in the control terminal device 3, the relay circuit 15 is formed so as to control the load by each bit of the control data,
The control outputs of four circuits will be obtained.

FIG. 7 (b) shows the monitoring terminal device 2, the circuit configuration of which is substantially the same as that of the control terminal device 3 described above, and the monitoring circuit 16 uses an individual control switch or a pattern control switch. The state of the switch S ₁ is monitored, monitoring data is formed in the signal processing circuit 11 based on the switch monitoring input, and the central processing unit 1 is controlled by the interrupt processing described above.
The ON / OFF display light emitting diodes LD ₁ and LD ₂ of the operation display circuit 15 ′ are based on the control data (indicating the operating state of the load) transmitted from the central control unit 1. I try to make it blink. In addition, the unique address can be set by the DIP switch of the address setting unit 12 such that the lower 6 bits of the 8-bit address data can be appropriately set by the user and the upper 2 bits can be set by the maker side (monitoring type). For control and control), both terminal units 2 and 3 can be easily made compatible by simply setting the user setting part of the unique address of the monitoring and control terminal units 2 and 3 to the same value. The load L ₁ connected to the control terminal 3 can be controlled based on the monitor data of the switch S ₁ returned from the monitor terminal 2 set to the same value. If the monitoring terminal 2 monitors the switch states of the plurality of switches S ₁ , S _2, ..., The circuit number setting unit 13 is unnecessary, and the monitoring circuit 16 includes a plurality of switches S 1. _1, it is sufficient to enter the switch state of S ₂ ....... The pattern control data is set by the pattern setting terminal 7 including the monitoring terminal 2 and the data input section 17, and the set data is appropriately transferred to the central controller 1 and stored in the data storage section. It is supposed to be remembered.

1 to 5 show a specific structure of the control terminal device 3 according to the present invention, which includes a terminal circuit (including an address setting switch SW _a and a circuit number setting switch SW _b ) which is a signal transmitting means, and The printed circuit board on which the output relay RY is mounted is built in the terminal case 20 which is composed of the body 20a and the cover 20b and is fitted by concave and convex fitting. On the lower surface of the terminal case 20, a pair of blades for signal connection is provided. 21 and a pair of plug blades 22 for connecting a load circuit are projected to form a terminal body 23. In the terminal block 29, the signal line 4, the wiring terminals 24 and 25 to which the load circuit wiring is connected, and the blade receiving portions 26 and 27 into which the both blades 21 and 22 are inserted and connected, respectively, are the terminal block case 28. Formed on the upper surface,
It is formed by internally connecting the metal fittings 26a, 27a of the blade receiving portions 26, 27 and the respective wiring terminals 24, 25. Also,
Both blades 21, 22 and blade receiving portions 26, 27 forming a pair
With different facing intervals (the blade 21 and the blade receiving portion 2
6 is made wider than the interval between the blade 22 and the blade receiving portion 27) to prevent the terminal main body 23 from being reversely attached to the terminal block 29. On the upper surface of the terminal unit case 20, the exposure holes 31a for exposing the address setting switch SW _a and the circuit number setting switch SW _b, 31b are bored,
The operation portions of both switches SW _a and SW _b are arranged so as not to project from the opening surfaces of the exposure holes 31a and 31b, and prevent accidental operation.

Further, in the embodiment, the projection 32 provided on the lower surface of the terminal case 20 is provided with the projection insertion hole 40 of the terminal case 28.
When it is inserted in the terminal, the short-circuit plate 41 that short-circuits the wiring terminals 25 is pushed down to release the short-circuit between the wiring terminals 25 and the output relay contact of the terminal body 23 is inserted between the wiring terminals 25. I have to. The short-circuit plate 41 is elastically contacted by the return spring 42 to the blade receiving metal fitting 27a of the blade receiving portion 27 to short-circuit both the wiring terminals 25.

In addition, the L-shaped projecting pieces 33 are projected from the lower ends of both side surfaces of the terminal case 20, and the engaging projections 34 are formed on the outer side surfaces of both projecting pieces 33.
When the projecting piece 33 is inserted into the engaging hole 43 formed on the upper surface of the terminal block case 28, the engaging hole 43 is formed.
The engaging projection 34 is engaged with the peripheral edge of the.
Therefore, the terminal body 23 does not come off from the terminal block 29 even if vibration or shock is applied. The terminal body 2
3 is removed, the tip operating portions of both projecting pieces 33 are pressed inward to bend the projecting pieces 33, thereby engaging the engaging holes 43.
The engagement protrusion 34 engaged with the peripheral edge is disengaged, and the terminal body 23 can be easily removed. Furthermore, a rib 35 that securely fixes the printed circuit board 31 is provided in the terminal device case 20 to prevent the printed circuit board 31 from moving even when a shock is applied, and to prevent the wiring terminal 2 from being moved.
It is designed to prevent detachment of the soldered portions of 4, 25.

Now, in the present invention, the terminal body 23 and the terminal block 29
Since the and blades are connected to each other, it is possible to easily deal with a failure of the control terminal device 3, and the pair of blades 21 and 22 are paired.
Further, since the facing intervals of the blade receiving portions 26 and 27 are made different, it is possible to avoid the trouble caused by the terminal body 23 being reversely attached to the terminal block 29. In addition, in the embodiment, the L-shaped projecting piece 33 having the engaging projection 34 is provided on the outer surface from the lower ends of both side surfaces of the terminal case 20,
The protrusion 3 is inserted into the engagement hole 43 formed on the upper surface of the terminal block case 28.
Since the engaging projections 34 are engaged with the peripheral edge of the engaging hole 43 when 3 is inserted, the terminal body 23 is prevented from coming off the terminal block 29 even when vibration or impact is applied. You can do it.

[Advantages of the Invention] As described above, the present invention takes in the control data transmitted from the central control unit through the pair of signal lines when the self is accessed and drives the output relay. In a remote control terminal, a signal transmission means and an output relay are built in a terminal case, and a pair of blades for connecting a signal and a pair of blades for connecting a load circuit are projectingly provided on a lower surface of the terminal case. The terminal body, the wiring terminals to which the signal line and the load circuit wiring are connected, and the blade receiving portions into which the above blades are inserted and connected are formed on the upper surface of the terminal block case, and the receiving blades of the blade receiving portions are provided. It is composed of a terminal block internally connecting each wiring terminal and each wiring terminal, and the opposing intervals of the pair of blades and blade receiving portion that make a pair are different, so that it is easy to respond when the control terminal unit fails. Yes, and the terminal body is a terminal block There is an effect that it is possible to provide a remote control terminal device capable of avoiding a trouble caused by being reversely attached to the.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of one embodiment of the present invention, FIG. 2 is an exploded side view of the same, and FIG. 3 (a) is a bottom view of the essential part of the same.
FIG. 3 (b) is a front view of the same main part, FIG. 3 (c) is a side view of the same main part, FIG. 3 (d) is a top view of the same main part, and FIG. 4 is a perspective view of the same main part. 5 is a sectional view of the same as above, FIG. 6 (a) is a schematic configuration diagram of a remote monitoring and controlling system according to the present invention, and FIG. 6 (b).
Is an operation explanatory diagram of the above, FIG. 7 (a) is a main part block circuit diagram of the same, and FIG. 7 (b) is a main part block circuit diagram of the same. 1 is a central control device, 2 and 3 are terminals, 4 is a signal line, 20 is a terminal case, 21 and 22 are blades, 23 is a terminal body,
24 and 25 are wiring terminals, 26 and 27 are blade receiving portions, 28
Is a terminal block case, 29 is a terminal block, 33 is a protruding piece, 34 is an engaging protrusion, and 43 is an engaging hole.

Claims (2)

[Scope of utility model registration request] 1. A remote control terminal device for fetching control data transmitted from a central control device through a pair of signal lines when the self device is accessed to drive an output relay. A terminal unit main body in which a signal transmission means and an output relay are built in a terminal unit case, and a pair of blades for signal connection and a pair of blades for connecting a load circuit are projectingly provided on a lower surface of the terminal unit case; , A wiring terminal to which the load circuit wiring is connected and a blade receiving portion into which the above-mentioned blades are inserted and connected are formed on the upper surface of the terminal block case, and the receiving metal of each blade receiving portion and each wiring terminal are internally connected. The terminal device for remote control is characterized in that the opposing blades of the pair of blades and the blade receiving portion that are paired with each other are made different from each other. 2. An engagement hole formed in an upper surface of a terminal block case by projecting projections of a L-shape projecting from lower ends of both side surfaces of a terminal case and forming engagement projections on outer surfaces of both projections. The remote control terminal according to claim 1, characterized in that the engaging projection is engaged with the peripheral edge of the engaging hole when the projecting piece is inserted into the terminal.