JPS62250797A - Load controller - Google Patents

Abstract

PURPOSE:To reduce cost by providing a terminal equipment for supervision and a speed adjusting means thereby eliminating a need for expanding the capacity of the power suource circuit of a central control unit even in case a terminal equipment for control whose generating period of a rush current is long is connected. CONSTITUTION:In case an interruption request signal is issued from a terminal equipment for supervisory terminal equipment 2 to which a pattern operating switch 6 is connected, first, the central control unit 1 transmits a transmission signal to access the terminal equipment for supervision to which a speed setting switch 7 is connected and checks the presence/absence of a return signal to decide whether the speed-setting of transmission signals is already set or not. In case the speed-setting switch 7 is provided, the supervisory data returned to the central control unit 1 is checked by means of a return signal to confirm the set speed set by the speed setting switch 7, and transmission signals to respectively control plural loads 91-9n are transmitted at this set speed, and by means of this transmission, a control data is transmitted to the terminal equipment for control 3 which controls the plural loads 91-9n, so that the load controlling relays of control relay circuits are sequentially operated to turn on the losds 91-9n.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a load control device that monitors operation switches and controls loads using time-division multiplex transmission.

[Background Art] Conventionally, this type of load control device that monitors operation switches and controls loads (e.g., lighting load, power load, fan, etc.) using time-division multiplexed transmission is as shown in Fig. tjS4. , the central control device 1 and a plurality of terminals a 2 +3 to which unique addresses are set are connected through a pair of signal lines 4, and an address data signal AD is sent to call the terminal device 2.3 from the central control device 1. , a transmission signal Vs consisting of control data No. εCD and a return period setting signal WT is sent to each terminal 2.
．． 3, time-division multiplex transmission is performed via signal #i4, and each terminal rectifies and smoothes the transmission signal Vs to form a circuit power supply, and when the address data of the transmission signal Vs and its own unique address data match. data is exchanged with the central control device 1, and the monitoring terminal 2 sets a return period for monitoring data of the operation switches 5 and 6 that control the loads 91 to 9n individually or in a pattern when the addresses match. It is returned in synchronization with the signal W'r, and the control terminal 3 drives a load control relay based on the control data CD of the transmission signal Vs when the addresses match. Here, as shown in FIG. 5, the central control unit 1 steps down the commercial power supply using a transformer, rectifies and smoothes it, makes it constant voltage, and supplies it to a predetermined circuit power supply (+24V, -24V).
, +5V), a signal processing circuit 11 that forms a transmission signal Vs, and a signal line 4 that transmits a transmission signal Vs.
The transmission signal ε circuit 12 is configured to send a signal to the signal vb, and the receiving circuit 13 is configured to receive a return signal vb via the signal line 4. FIG. 8 shows a specific example of the transmission signal Vs, and the transmission signal Vs is a bipolar pulse signal as shown in FIG.
Subsequently, an address data signal AD and a control data signal CD which are pulse width modulated with data are sent out, and then a return period setting signal WT is sent out. Also,
The transmission signal Vs is cyclically transmitted as shown in FIG. 8 (1+), and the transmission signal V s H
-Vsn are signals for accessing each terminal device 2.3. Note that, except during control, the transmission signal Vs,
The control data transmitted at ~Vsn may be dummy data.

Furthermore, if the monitoring data is returned from the monitoring terminal 52 by interrupt signal processing, it goes without saying that the monitoring terminal 2 does not need to be constantly accessed. The loads 91 to 9++ to be controlled are set based on the monitoring data of the individual operation switch 5 or the pattern operation switch 6 transmitted by the return signal vb received at 13 (however, when pattern control is performed, multiple ), and controls the transmission circuit 12 by forming a transmission signal Vs that transmits predetermined control data to the control terminal 3 that controls the loads 91 to 9n.

In addition, as shown in FIG. 6, the monitoring terminal 2 has an address matching with a power supply circuit 20 that flattens the transmission signal Vs consisting of a bipolar pulse signal and makes it a constant voltage to form a circuit Mi source. A signal processing circuit 21 determines the return signal Vb and forms a return signal Vs, a monitoring input circuit 22 receives data indicating the state of the pattern operation switch 6, and converts the return signal Vb into a current mode signal (appropriate between the signal lines 4 and 4). A return circuit 23 that sends back a current signal (obtained by connecting a low resistance)
Power is supplied by the transmission signal Vs, and a return signal for returning monitoring data indicating the state of the pattern operation switch 6 when called from the central control device 1 is sent to the return period setting 4i WT. It is designed to be sent at a predetermined period set by the user.

Furthermore, the control terminal 'IS3! : As shown in the ItJ7 diagram, there is a power supply circuit 30 that rectifies and smoothes the transmission signal V 9 to make it constant voltage to form a circuit power supply, and a signal processing circuit that determines address matching and takes in control data to form a load control signal. It is composed of a circuit 31, a control relay circuit 32 that controls the load 9 by driving a load control relay with a load control signal, and a return circuit vi33 that returns an operation confirmation signal of the load 9 as a return signal vb as necessary. Power is supplied by the transmission signal Vs, and when called from the central control device i1, the control data sent by the transmission signal Vs is taken in and the load control relay is driven to control the load 9. It is supposed to be done. In addition, the control terminal 3 and the central control I-wave device are distributed! ! ! B
Loads 91 to 3 are installed inside the terminal device 3 for control.
Wiring to 9n is made easy.

By the way, in such a conventional example, the central control device 1
The capacity of the power supply circuit 10 is set in consideration of the number of connected terminal devices 2, 3 and the maximum power consumption of each terminal device 2, 3, and the maximum tl'l power consumption is determined by the period of occurrence of inrush current flowing during load control. of electricity. On the other hand, multiple loads9. In the case of batch pattern control of loads 9. to 9n. ~9
The speed at which the terminals 1 are sequentially turned on is proportional to the transmission speed of the transmission signal VS, and if the transmission time required for the transmission signal VS to access each control terminal 3 is T, then the loads 91 to 9n are The timing of turning on is as shown in FIG. 9, and the loads 93, 92, 95, 94, etc. connected to the control terminal 3 that are accessed continuously are as shown in FIG.
will be turned on sequentially with a delay of one hour.

Here, the transmission time T, that is, the transmission speed of the transmission signal Vs, is generally set as a system-specific predetermined transmission speed, and cannot be set arbitrarily by the user. Therefore, if the generation period T0 of the inrush current that flows during load control is longer than T (for example, if the control terminal 2 is equipped with a load control relay that drives a large load), multiple control The period T during which inrush current occurs in the terminal device 3. As a result, the maximum power consumption increases significantly (approximately three times as much in the example shown in Figure #19), and the power supply circuit 10 of the central control unit 1
It becomes necessary to use a large-capacity device as a central control device, which increases the cost and increases the size of the central control device 1.

[Objective of the Invention] The present invention has been made in view of the above-mentioned points, and its purpose is to solve the problem when a terminal device for control, which has a long period of inrush current generation during load control, is connected. To provide a low-cost and small-sized load control device that does not require increasing the capacity of a power supply circuit of a central control device.

[Disclosure of the Invention] (Embodiment) Fig. 1 shows an embodiment of the present invention, in which the setting of the speed setting switch 7 for setting the transmission speed of the transmission signal VS is performed in a load control device similar to the conventional example. A monitoring terminal device is provided to send monitoring data indicating the status back to the central control device 1, and the central control device 1 is also provided with speed adjustment means for appropriately monitoring the setting state of the speed setting switch 7 and adjusting the transmission speed. In this embodiment, the speed adjusting means is formed by the signal processing circuit 11 of the central control device 1. Further, as shown in FIG. 2, the speed setting switch 7 is attached to each panel of the monitoring terminal 2, and has four levels of transmission speed (T =
0.5s, 1. Os, 2. Os, 3. Os) can be set, and the setting state of the speed setting switch 7 is displayed by an indicator lamp 8 made of a light emitting diode. Note that the other configurations and basic operations are completely the same as those of the conventional example, so explanations will be omitted.

The operation of the embodiment will be described below. FIG. 3 is a flowchart showing the operation, and now the central control device 1
A transmission signal Vs for transmitting dummy control data is sequentially sent out to supply power to each terminal device 2, 3, and an interrupt request signal (current mode signal) is sent from the monitoring terminal device 2 in synchronization with the start signal ST. It is checked whether the signal is returned, and when either of the operation switches 5 or 6 is operated and an interrupt request signal is sent back from the monitoring terminal 2, the ? ! IIIQ included'g! - Search for the monitoring terminal 2 that issued the request and determine its type. When interrupt request No. 15 is generated from the monitoring terminal 2 to which the individual operation switch 5 is connected, the loads 91 to 91 corresponding to the individual operation switch 5 are processed using the same processing routine as in the conventional example.
Control data for controlling 9n is transmitted by transmission No. 43 Vs. On the other hand, the interrupt request signal is sent to the pattern operation switch 6.
is generated from the connected monitoring terminal 2, first, the central control unit 1 sends out a transmission signal Vs to access the monitoring terminal 2 connected to the speed setting switch 7. By checking the presence or absence of the return signal vb, it is determined whether the speed of the transmission signal Vs has been set. At this time, if the speed setting switch 7 is not provided, return No. 16 v
Since the data 9.b is not returned, the plurality of loads 9. A transmission signal vs for transmitting control data for controlling each of the loads 9, ~9!1 is sequentially sent out, and a plurality of loads 9, ~9!1 are collectively pattern-controlled. On the other hand, if the speed setting switch 7 is provided, the monitoring data sent back to the central control unit 1 by the return signal vb is checked to confirm the speed set by the speed setting switch 7, and multiple speeds are set at this set speed. load 91~91
By transmitting the transmission signal Vs that controls each of the loads 91 to 9n, the control data is transmitted to the control terminal device 2 that controls the plurality of loads 91 to 9n, and the load control relays of the control relay circuit 32 are sequentially operated to control the load 91. ~9n is turned on. In this case, it goes without saying that the transmission speed set by the speed setting switch 7 is T>T.

Therefore, in this embodiment, the inrush current generation period T during load control. The user can easily decide whether or not to provide the speed setting switch 7 or change the transmission speed using the speed setting switch 7 depending on the situation. Occurrence period T. Since the WL source open circuit of the central control device 1 can be prevented from overlapping, even if the inrush current generation period 'r0 becomes longer due to the connection of the terminal device 2 for controlling a large load, the WL source open circuit of the central control device 1 can be prevented. 10 There is no need to increase the capacity, the cost can be reduced, and miniaturization can be easily achieved.

[Effects of the Invention] As described above, the present invention connects a medium heat control device and a plurality of terminal devices each having a unique address via a pair of lines 13, and uses address data to call the terminal devices from the central control device. Transmission No. 16 consisting of a signal, a control data signal, and a return period setting signal is time-division multiplexed transmitted to each terminal via a signal line, and each terminal rectifies and smoothes Transmission No. 16 to form a circuit power supply. When the address data of the transmission signal and its own unique address data match, data is exchanged with the central control unit, and the monitoring terminal performs individual control or pattern control of the load when the addresses match. In the load control device, the switch monitoring data is returned in synchronization with the return period setting signal, and the control terminal rJ drives the load control relay based on the control data of the transmission signal when the addresses match,
A monitoring terminal device is provided to send monitoring data indicating the setting status of the speed setting switch that sets the transmission speed of the transmission signal back to the central control unit, and the setting status of the speed setting switch is appropriately monitored and transmitted to the central control unit. It is equipped with a speed adjustment means to adjust the speed,
Since the transmission speed can be adjusted according to the period during which inrush current occurs during load control, even if a control terminal device with a long period of inrush current is connected, the power supply circuit of the central control unit There is no need to increase the capacity of the
This has the advantage of being able to reduce costs and easily miniaturize.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a front view of the main parts of the same, and FIG. 3 is a diagram of FIGS. 5 to 7 showing the operation of the same.
The figure is a main block circuit diagram of the same as the above, and FIGS. 8 and 9 are operation explanatory diagrams of the same as the above. 1 is a central control unit, 2 is a terminal for monitoring, 3 is a terminal for control, 4 is a signal line, 5 is an individual operation switch, 6 is a pattern operation switch, and 7 is a speed setting switch. Agent Patent Attorney Ishi 1) Chief 7 Figure 3 Figure 6 Figure 7 Prisoner

Claims (1)

[Claims] (1) Connect the central control unit and multiple terminal devices with unique addresses set using a pair of signal lines, and call the terminal devices from the central control unit using an address data signal, a control data signal, and a return period setting signal. A transmission signal is time-division multiplexed to each terminal device via a signal line, and each terminal rectifies and smoothes the transmission signal to form a circuit power supply, and the address data of the transmission signal and its own unique address data are When a match occurs, data is exchanged with the central control unit, and when the address matches, the monitoring terminal device synchronizes the monitoring data of the operation switch that controls the load individually or in a pattern with the return period setting signal. At the same time, the setting state of the speed setting switch that sets the transmission speed of the transmission signal in a load control device configured to drive the load control relay based on the control data of the transmission signal when the address matches in the control terminal device. The present invention is characterized in that it is provided with a monitoring terminal device that sends monitoring data indicating the transmission speed back to the central control device, and is also provided with a speed adjustment means in the central control device that appropriately monitors the setting state of the speed setting switch and adjusts the transmission speed. load control device.