JPH0736631B2 - Remote control system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a remote control system for time-division multiplexing transmission of control data for calling a terminal from a central control unit to control a load.

BACKGROUND ART Generally, in a remote control system of this type in which control data for controlling a load is called from a central control device and time-division multiplex is transmitted, as shown in FIG. Mode data MD, which is formed by branching and connecting a plurality of terminal devices 2 each having a unique address set to the signal line 3 connected to the control device 1 and sets the control mode from the central control device 1, calls each terminal device Address data AD,
Transmission data such as control data CD for controlling a load (not shown) connected to each terminal 2 is time-division multiplexed through the signal line 3. The control mode will be described later. FIG. 1 (b) shows a multi-polar transmission signal V _s, which is a data signal DT for transmitting data by a pulse width modulation signal following a start signal ST indicating the start of data transmission.
Then, a return period setting signal WT for setting a return period of return data (for example, reception confirmation data) returned by the current mode return signal from the terminal device 2 is transmitted.

FIG. 6 shows a format example of data transmitted by the conventional data signal DT. Mode data MD, address data AD, control data CD and checksum data S
Data such as D and byte counter data BD is transmitted at a predetermined timing. Here, the mode data MD is data for instructing the control method of the load connected to each terminal 2, and in FIG. 6A, the load connected to one terminal is controlled. The data signal DT in the case (hereinafter, referred to as individual control mode) is shown. In FIG. 6 (b), a case where a plurality of loads are collectively controlled to be turned on or off by one data signal DT (hereinafter referred to as a group) The data signal DT in the control mode) is shown. The data signal DT shown in FIG. 6 (a) is mode data MD for setting the control mode to the individual control mode, address data AD for accessing a specific terminal 2, and control for transmission to the called terminal 2. It is composed of data CD and checksum data SD, and each terminal 2 is accessed individually to control data.
CDs are being transmitted. The data signal DT shown in FIG. 6 (b) includes mode data MD for setting the control mode to the group control mode, group address data AD 'for simultaneously accessing a plurality of terminals 2, and a plurality of called terminals. Control data CD to be transmitted to 2 and checksum data SD, and one control is simultaneously applied to a plurality of terminal devices 2 defined by a unique address (for example, the addresses of the upper several bits match). data
CDs are being transmitted.

By the way, in the case of controlling a large number of loads such as a lighting fixture on the floor in such a conventional example, when the terminal 2 corresponding to each load is accessed in the individual control mode to transmit the control data CD, Since the response speed greatly varies, for example, there is a problem in that a large number of lighting fixtures are sequentially turned on or off, and unnatural blinking control is performed. Therefore, in the group control mode, the terminal devices 2 corresponding to each load may be collectively accessed to transmit the control data CD.
In this case, although the response speed becomes faster, it only turns on or off a plurality of loads all at once, and it is not possible to individually instruct the control state (on or off) of each load with only one data signal DT. There was a problem that I could not.

[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 provide a fast response speed when controlling a plurality of loads and to control a plurality of loads separately. It is an object of the present invention to provide a remote control system that can be collectively controlled so as to be in a state, and that a load to be collectively controlled can be arbitrarily set, and a highly versatile control system can be easily realized.

DISCLOSURE OF THE INVENTION (Embodiment) FIGS. 1 to 3 show an embodiment of the present invention, in which a plurality of terminals each having a unique address set on a signal line 3 connected to a central control unit 1 are shown. 2 is branched and connected, and a unique control mode in which the loads respectively connected to the respective terminals 2 are individually controlled, or a plurality of loads respectively connected to a plurality of terminals 2 whose unique addresses increase in sequence Mode data MD for instructing whether it is a pattern control mode for collectively controlling so as to be in another control state, address data AD for calling each terminal 2, and control for instructing a control state of a load connected to each terminal 2. A remote control system in which a data signal DT including a data CD or the like is time-division multiplexed from a central control device 1 via a signal line 3, and in a separate control mode, a fixed length of one control data CD is included. data No. DT
In the pattern control mode, a variable length data signal as shown in FIG. 2 including control data CD _{1 to} CD _n for the number of loads to be controlled is transmitted, and the mode data MD is the pattern control mode. In the data signal DT, the addresses of the tips of the plurality of terminals 2 to which the loads to be collectively controlled are respectively connected are used as address data AD ", and the addresses of the plurality of terminals 2 are sequentially transmitted to the terminals 2. Including a plurality of control data CDs, byte counter data BD indicating the number of control data CDs, and checksum data SD,
Data signal in which mode data MD is in pattern control mode
Each terminal 2 receiving the DT has 1 in its own unique address.
When the forward position obtained by subtracting the start address from the value obtained by adding is less than or equal to the byte counter data BD, it is determined that the central controller 1 has accessed, and the above sequence is selected from among the plurality of control data CD _{1 to} CD _n that are sequentially transmitted. Control data corresponding to position
Take in CD _{1 to} CD _n to control the load. FIG. 3 is a diagram showing the correspondence between the transmitted control data CD _{1 to} CD _n and the unique address of the terminal device 2.

The operation of the embodiment will be specifically described below. Now
As shown in FIG. 4, operation switches S _{1 to} S _{16 for} controlling on / off of 16 loads (for example, floor lighting fixtures) are installed in parallel in the operation section, and each load is connected to a unique terminal unit 2. When the addresses are set to 00 _{H to 0} F _H and each load is controlled to the on / off state shown in FIG. 4, the transmission signal V _s in the pattern control mode transmitted from the central controller 1 is used. The format of the transmitted data signal DT is the fifth
As shown in the figure. That is, the mode data MD is set to the pattern control mode, and the start address data AD "is 0
0 _H , byte counter data BD is set to 16 respectively,
16 control data CDs for turning on and off each load thereafter
_{1 to} CD ₁₆ are transmitted sequentially, and finally checksum data SD
Is transmitted. In the terminal device 2 which receives the transmission signal V _s in the pattern control mode, the head address data AD "
Also, it is determined based on the byte counter data BD whether or not it has been accessed. That is, the order value is the byte counter data BD with the value obtained by subtracting the start address data AD "from the value obtained by adding 1 to its own unique address as the forward position.
If the following condition is satisfied (own unique address + 1-start address data AD ″) ≦ byte counter data BD is satisfied), it is determined that the access is made from the central control device 1. In the called terminal device 2, The load is controlled by fetching the control data CD _{1 to} CD ₁₆ corresponding to the higher order value from the transmitted control data CD _{1 to} CD _16. For example, the terminal from the first address 00 _H to the third unique address 02 _H In the device 2, the control data CD ₃ (OFF) transmitted third is taken in and the load is controlled to be turned off.

As described above, in the embodiment, the control data CD ₁ is sent to all the terminals 2 in the terminal group by only accessing the head address of the terminal group consisting of 16 terminals 2 to which the load to be collectively controlled is connected. CD ₁₆ can be sequentially transmitted, and the response speed can be significantly increased as compared with the case where control data is transmitted to the 16 terminals 2 in the individual control mode. For example, when the required transmission time (1 packet) of each transmission signal V _{s in} the individual control mode is 15 ms,
The time required to transmit the control data CD _{1 to} CD ₁₆ to all the terminals 2 in the individual control mode is 240 ms, but in the pattern control mode according to the present embodiment, the control data CD is about 48 ms.
_{1 to} CD ₁₆ can be transmitted, and a speedup of about 5 times can be realized. In addition, since different control data CD _{1 to} CD ₁₆ can be transmitted to each terminal 2 of the terminal group, a plurality of loads can be collectively controlled in an arbitrary pattern, and the terminals can be controlled together. By appropriately setting the head address of the group and the byte counter data, it is possible to easily select the load that can be collectively controlled, so that a highly versatile control system can be easily realized.

[Advantages of the Invention] As described above, according to the present invention, a plurality of terminals each having a unique address set in the signal line connected to the central control unit are branched and connected, and the loads respectively connected to the terminals are individually connected. The individual control mode in which the individual addresses are sequentially controlled, or the pattern control mode in which a plurality of loads respectively connected to a plurality of terminal devices whose unique addresses increase in sequence are collectively controlled to be in different control states. A data signal including mode data, address data for calling each terminal device, control data for instructing the control state of a load connected to each terminal device, etc. is time-division multiplexed from a central control unit through a signal line. A remote control system, which transmits a fixed-length data signal containing only one control data in the individual control mode, and controls the number of loads to be controlled in the pattern control mode. For data signals that transmit variable-length data signals containing data and whose mode data is the pattern control mode, use the address at the beginning of a plurality of terminals to which loads that are collectively controlled are connected. In addition, a plurality of control data transmitted to each terminal in the order of address of the plurality of terminals and byte counter data indicating the number of the control data are included, and each mode data is a pattern control mode. In the terminal,
When the forward position obtained by subtracting the start address from the value obtained by adding 1 to its own unique address is less than or equal to the byte counter data, it is determined that the central controller has accessed and the above sequence value is selected from among the plurality of control data that are sequentially transmitted. The load is controlled by fetching the control data corresponding to, and the load of batch control can be accessed by simply accessing the start address of the terminal group consisting of multiple terminals connected to it. The control data can be sequentially transmitted to all terminals, and there is an effect that the response speed can be significantly increased compared to the case where control data is transmitted to a plurality of terminals in the individual control mode. Since different control data can be transmitted to each terminal in the terminal group, multiple loads can be collectively controlled in any pattern. Also, since can be easily be selected load can be controlled collectively by appropriately setting the start address and byte counter data terminal device group,
This has the effect of easily realizing a highly versatile control system.

[Brief description of drawings]

FIG. 1 (a) is a schematic configuration diagram of a time division multiplex signal transmission system according to the present invention, FIG. 1 (b) is a diagram showing transmission signals of the same, and FIGS. 2 to 5 are embodiments of the present invention. Operation explanatory diagram of
FIG. 6 is a diagram for explaining the operation of the conventional example. Reference numeral 1 is a central controller, 2 is a terminal device, and 3 is a signal line.

Claims (1)

[Claims] 1. An individual control mode for branching and connecting a plurality of terminals each having a unique address set to a signal line connected to a central control unit, and individually controlling loads respectively connected to the respective terminals. Mode data for instructing whether it is a pattern control mode that collectively controls a plurality of loads connected to a plurality of terminal devices whose unique addresses increase in order to be in different control states, calling each terminal device A remote control system in which a data signal including address data and control data for instructing a control state of a load connected to each terminal device is time-division multiplexed from a central control unit through a signal line. In the control mode, a fixed-length data signal containing only one control data is transmitted, and in the pattern control mode, a variable-length data signal containing the control data for the number of loads to be controlled is transmitted. A data signal that transmits a signal and whose mode data is a pattern control mode uses the head address of a plurality of terminals to which loads to be collectively controlled are connected as address data, and also a plurality of terminals. Each terminal device that receives a data signal in which the mode data is the pattern control mode, including the plurality of control data and the byte counter data indicating the number of control data, which are transmitted to each terminal device in the order of the address, When the order value obtained by subtracting the head address from the value obtained by adding 1 to the address is less than or equal to the byte counter data, it is judged that the central control unit has accessed and the order value is corresponded to from the plurality of control data sequentially transmitted. A remote control system characterized by taking in control data and controlling the load.