JPS6328399B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an opening/closing control device that controls a plurality of receiving sections using signals from a transmitting section, and particularly to a circuit configuration in which the number of signal lines connecting the transmitting section and the receiving section is minimized. Conventionally, a circuit shown in FIG. 1 has generally been representative of a circuit in which a large number of receiving sections are centrally controlled by a central transmitting section. That is, the transmitter 1 has a control power source 2 and a selection switch 3, the receivers 4 at multiple locations are equipped with switches 6 for outputting to the load 5, and the transmitter 1 and the receiver 4 are connected by a control line 7. A method has been adopted where they are tied together and controlled one-on-one. This control method does not pick up electromagnetic noise, so there is no risk of malfunction, and it is a reliable method, but it requires a dedicated control line for each controlled object, and if the number of controlled points is n, one common line is used. (n+1) as (ground wire)
This control line is required, and when there are many objects to be controlled, the cost of wiring materials and construction costs for the control line becomes enormous, resulting in high costs. In order to eliminate this drawback, we have developed a second circuit as another circuit.
As shown in the figure, the number of control lines is limited to two, and a modulator 13 that modulates the amplitude, frequency, or position is installed in the central transmitter 11 in addition to the control power supply 12, and the modulated signal is transmitted to the control line. There is a method in which a discriminator is installed in the receiver 18 to control the switch 16 that is conveyed by the receiver 17 and output to the load 15 in the receiver 14, and the modulated signal is discriminated and the switch 16 is opened/closed.
Although this control method reduces the cost of wiring materials and construction costs for control lines and can send many signals, the modulator 13 of the transmitter 11 and the discriminator for each control object are expensive, and in this respect, It had the disadvantage of increasing costs. There is also a method of superimposing a signal on an existing power line and transmitting it without using the control line in the modulation transmission method shown in FIG. 2 described above. Although this method has the advantage of not requiring any control lines, it still has the above-mentioned disadvantages, and also has the disadvantage of easily picking up electromagnetic noise emitted from various load electrical devices connected to the power line, resulting in malfunctions. This invention eliminates the above-mentioned drawbacks, reduces the number of control lines, reduces wiring work costs and material costs, and eliminates the need for expensive special means such as modulators, and is free from malfunctions caused by electromagnetic noise. without,
The purpose is to provide a highly reliable and inexpensive opening/closing control device. According to this invention, in order to achieve the above object,
The transmitter includes a control power supply connected in series to a common line,
An operating switch that issues a control command, a control relay that is provided corresponding to each of the control lines and connects or disconnects the control line from the control power source, and the operating switch connects mutually different sets of the plurality of control relays. a transmission timing control circuit that operates the transmission timing control circuit; a reception relay that is provided corresponding to each of the control lines and is activated via the control line; and a transmission timing control circuit that is activated by the series-connected outputs of all the reception relays. an output switch; a combination of the open and closed states of the series-connected outputs of the receiving relays of the receiving section is configured so that the output switch of the receiving section responds when the operating switch is operated; The control relay was configured to match the combination of the control relays operated by. Embodiments of the present invention will be described below based on the drawings. FIG. 3 is a circuit diagram of an opening/closing control device which is an embodiment of the present invention. In this circuit diagram, the transmitter Tr
An example will be described in which the control line L connecting the receiver and the receiver Re has four conductors. If one of the four conductors is used as a common line L _E , the remaining three conductors can be used for signals, so they are designated L ₁ , L ₂ , and L ₃ . The transmitter Tr is provided with three control relays R _Y1 , R _Y2 , R _Y3 , and the closing contacts of these control relays are connected to control lines L ₁ , R Y3 , respectively.
Connect in correspondence with L ₂ and L ₃ . The transmitter Tr also has a push button switch as an operation switch.
P ₁ , P ₂ , P ₃ are arranged, and latch relays K _{1 ,} K _{2 , K 3 and} auxiliary relays X ₀ , X ₁ , ₂ , a transmission timing control circuit A consisting of timers T ₁ , T ₂ , a set switch Y, and a reset switch Z
Insert. The operations of pushbutton switches P ₁ , P ₂ , and P ₃ are temporarily held by latch relays K ₁ , K ₂ , and K ₃ . The closing contacts of latch relays K ₁ , K ₂ , and K ₃ are such that latch relay K ₁ connects to control relay R Y1, K ₂ connects to control relay R _Y2 , and K ₃ connects to control relay R _Y1 .
The control relay R Y1 is connected in a corresponding manner to the R _Y3 , and is arranged and connected so that the control relay R _Y1 is energized by operating the push button switch _P1 , for example. In this way, the push button switches P ₁ , P ₂ ,
Seven combinations can be obtained by operating _P3 , and control relays R _Y1 , R _Y2 , and R _Y3 are excited according to the combination, and signals are transmitted to control lines _L1 , _L2 , and _L3 . . V is a control power supply.

[Table] Next, each of the seven receiving sections Re ₁ to _{Re 7} also has a set of closing contacts or opening contacts.
Three each of R _A1 , R _A2 , R _A3 to R _G1 , R _G2 , and R _G3 are arranged, and for example, in the receiving section Re ₁ , the closing contact of the receiving relay R _A1 connected to the control line L ₁ and the control line L ₂ ,
Connect the open contacts of receiving relays R _A2 and R _A3 connected to L ₃ in series. Furthermore, in each of the receiving sections Re ₁ to Re ₇ , the opening contacts of the above-mentioned receiving relays must be arranged in at least one set in a different order, and the control relays R Y1, R _Y1 ,
When R _Y2 and R _Y3 are energized, they act as closing contacts, and when they are not energized, they serve as open contacts.If they are connected in series, there are 7 types of receiving sections.
Re can be configured. Next, the operation of the opening/closing control device described above will be described. First, the code to be transmitted is set using pushbutton switches P ₁ , P ₂ , and P ₃ . For example control line L ₁
To generate a code of signal "1" on control lines L ₂ and L ₃ and a code of signal "0" on control lines L 2 and L 3, push button switch P ₁ is closed and push button switches P ₂ and P ₃ are opened. This sets the latch relay _K1 and closes its closing contacts. Latch relay K ₂ ,
_K3 is in the reset state and its closing contact is in the open state. When set switch Y is closed in this state, auxiliary relay _X0 is energized, and the timer _T1 and auxiliary relay _X1 are energized by the closing of the closing contact. By closing the closing contact of auxiliary relay _X1 , control relay R _Y1 is excited in accordance with the preset code signal, its output contact is closed, and a code signal is generated on control line _L1 . This code signal excites the receiving relays R _A1 to R _G1 in the receiving section Re, and the closing contacts of these are closed, resulting in the output switch S _w1 of the receiving section Re ₁ .
is closed. Thus, by operating the push button switch _P1 of the transmitter Tr, the output switch _Sw1 of the reception list _Re1 can be opened and closed. After this operating time, the transmitter Tr
After the set time _of timer T ₁ , _the time-limited opening contact opens, auxiliary relay
The circuit will also be open. Note that the set time of the timer _T1 can be changed externally so that a time longer than the operating time of the receiver Re or the load can be set.
After confirming the operation of _the receiver Re ₁ or the _{load ,} when the set switch _Y is opened, the auxiliary relay ₂ and auxiliary relay X ₂ are energized. When the closing contact of auxiliary relay X ₂ is closed, the latching relay
The reset coil of K ₁ is energized and all latch relays K ₁ , K ₂ , and K ₃ are in the reset state. After a certain period of time set by timer _T2 , the reset coil is no longer energized and returns to its initial state.
The reset switch Z is used when a push button switch is pressed by mistake.Pressing the reset switch Z excites the reset coil of the latch switch activated by the corresponding push button switch, returning the latch switch to the reset state. It is something. FIG. 4 shows a circuit of an opening/closing control device according to another embodiment of the present invention, in which a daisy switch B is used as the transmission timing control circuit A of the transmitting section in the circuit diagram of FIG. 3, and one push button switch P _B is used. I did it,
The same parts as in FIG. 3 are given the same reference numerals. This operation will be explained. Depending on the numerical value setting on the surface of daisy switch B, a binary code corresponding to the numerical value is output as a combination of output contacts.
This output contact is connected to control relays _RY1 , _RY2 , _RY3 . For example, if you press pushbutton switch P _B with the front value set to 1 on the digital switch, the control relay will be activated in binary code corresponding to the set value.
R _Y1 is excited. Then, by closing the output contact of the control relay, a code signal is generated on the control line _L1 and transmitted to the receiving section Re. Below, the operation of the receiving section Re is the same as in the case of Fig. 3. By setting the numerical value on the surface of the daisy switch B to 1 and operating the push button switch P _B , the output switch S _w1 of the receiving section Re ₁ is closed. Can be done. In this way, seven signals can be sent using four control lines, whereas conventional one-to-one signals would only send three signals. Generally, if there are n control lines, by using one as a common line, (n-1) signal lines can be used, and [2 ^(n-1) -1] signals can be sent. . For example, with 6 control lines, 31 signals can be sent, and with 8 control lines, 127 signals can be sent, so signals can be sent with an extremely small number of control lines compared to the number of carrier signals. In addition, if a flat cable is used for the control line, as shown in Figure 5, in which the conductor 9 is insulated between two plastic insulators 8 and lined up at equal intervals, the wiring work is the same as for a single line. It can be handled like this, which is advantageous in terms of wiring work. According to the above-described embodiment of the present invention, a circuit is configured in which the transmitting section and the receiving section have a selection function by relay control, so that it is possible to send many signals with a small number of control lines, and a flat cable is used as the control line. In conjunction with this, wiring material costs and construction costs can be reduced, and an inexpensive opening/closing control device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a switching control device according to the prior art, FIG. 2 is a circuit diagram of another switching control device according to the prior art, and FIG. 3 is a circuit diagram of a switching control device according to an embodiment of the present invention. FIG. 4 is a circuit diagram of an opening/closing control device according to another embodiment of the present invention, and FIG. 5 is a perspective view of a flat cable used as a control line for the same device. A: Transmission timing control circuit, B: Digital switch, K ₁ , K ₂ , K ₃ : Latch relay, L: Control line, L ₁ , L ₂ , L ₃ : Signal control line, P ₁ , P ₂ , P ₃ ，
P _B : Operation switch (push button switch), R _A1 ,
R _A2 , R _A3 ...R _G1 , R _G2 , R _G3 : Reception relay, Re,
Re ₁ to Re ₇ : Receiver, R _Y1 , R _Y2 , R _Y3 : Control relay, S _w1 to S _w7 : Output switch, T ₁ , T ₂ : Timer,
V: Control power supply, X ₀ , X ₁ , X ₂ : Auxiliary relay, Y:
Set switch, Z: Reset switch.

Claims (1)

[Claims] 1. A control device that selectively opens and closes a number of receiving units exceeding the number of control lines via one common line and a plurality of control lines in response to a selection signal from a transmitting unit. The transmitter includes a control power supply connected in series to the common line, an operation switch that issues a control command, and a control unit provided corresponding to each of the control lines to connect and disconnect the control line from the control power supply. a transmission timing control circuit for operating different combinations of the plurality of control relays by the operation switch; provided corresponding to each of the control lines and operated via the control lines; and an output switch operated by the outputs of all the receiving relays connected in series; the output switch of the receiving section is configured such that the output switch of the receiving section responds by operating the operation switch. An opening/closing control device characterized in that a combination of open/close states of each output connected in series of a receiving relay matches a combination of the control relays operated by the operation switch. 2. In the control device according to claim 1, the transmission timing control circuit of the transmitter includes: a latch relay is provided between each control relay and an operation switch corresponding to the control relay, and a latch relay is provided between each of the control relays. An auxiliary relay, a timer, a set switch, and a reset switch are provided, and when the operation switch and the set switch are operated, the control relay corresponding to the operation switch is closed, and when the reset switch is operated, the control relay is opened. An opening/closing control device characterized in that it is configured to operate. 3. In the control device according to claim 1, a daisy switch is used as the transmission timing control circuit of the transmitter, which outputs a binary code corresponding to the numerical value set on the surface as a combination of output contacts. An opening/closing control device featuring: 4. The opening/closing control device according to claim 1, wherein the common line and the control line are housed in one flat cable.