JPH04123693A - Terminal equipment for remote control - Google Patents

Abstract

PURPOSE:To simplify construction and to easily execute the setting operation of a specific address by forming an address setting part of an EEPROM so that its data can be freely set via an optical wireless signal. CONSTITUTION:A terminal equipment case 20 of control terminal equipment is formed to the dimension of one module of the agreed dimension for cabinet panel and provided with a mounting groove 26. On the other hand, an address setting part 11 is formed of the EEPROM and free write/read is made available as necessary by means of a signal processing circuit 10. The optical wireless signal is received by an optical signal receiving part 12 via a filter 23 and data are written in the EEPROM of the address setting part 11. Since an opening 22(a) is provided with the filter 23, malfunction due to unnecessary infrared ray can be prevented. Thus, the setting operation of the specific address can be easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control terminal device that performs load control by receiving time-division multiplexed transmission signals from a central control device.

[Prior Art] Fig. 10 shows a schematic configuration of a remote monitoring and control system using this type of remote control terminal.
, a plurality of monitoring terminals 2 to which unique addresses are set and which monitor the switches S, ~S4, a control terminal 3 that controls the loads Ll to L, a wireless relay terminal 7, an external interface terminal 8, and The pattern setting terminal 9 and the pair of signals I! ! 4, and the transmission signal Vs sent from the central control device 1 to the signal line 4 is connected to the 11th
As shown in Figure (1), a start pulse signal ST indicates the start of signal transmission, and a mode data signal MD indicates the signal mode.
, an address data signal AD transmitting 8-bit address data for calling the terminal device 2, 3.7 to 9, a load, .
A control data signal C transmitting control data for controlling L,
D, checksum data signal C8 and terminals 2, 3 .
This is a bipolar (±24■) time division multiplexed signal consisting of a return standby signal WT that sets the return period from 7 to 9, and data is transmitted by pulse width modulation.

When the address data of the transmission signal Vs received via the signal line 4 and its own unique address data match, each terminal device 2.3.7 to 9 captures the control data of the transmission signal Vs, and Return waiting signal W of signal Vs
The monitoring data signal is converted into a current mode signal (signal f
f14 is short-circuited via an appropriate low impedance and sent back as a signal sent out. Further, the central control device 1 includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal with the mode data signal MD in a dummy mode, and either a monitoring terminal 2 or a wireless relay terminal 7 or an external interface terminal. 8. When the interrupt signal ■; shown in FIG. 11(b) returned from the pattern setting terminal 9 is received, the interrupt generating terminal 2.7-9 is detected and the terminal 2. 7-9
Interrupt processing means is provided for accessing and returning monitoring data.

The central control device 1 also uses the monitoring data returned to the central control bag W1 from the monitoring terminal 2 or the wireless relay terminal 7, the external interface terminal 8, and the pattern setting terminal 9 as described above. At the same time, the control data is transmitted to the control terminal 3 via the signal line 4 via time-division multiplexing to control the corresponding loads L1 to L. It is designed to control ~L4.

The wireless relay terminal 7 is a terminal that relays data in an optical wireless system consisting of an optical wireless transmitter X, an optical wireless receiver Y, and a wireless signal 114a, and transmits the optical signal transmitted from the optical wireless transmitter The optical wireless receiver Y receives the received data via the wireless signal line 4a, and also transfers this data to the central control device 1.

The external interface terminal 8 is a terminal that performs data transmission with the external control device 8a, and the pattern setting terminal 9 inputs pattern control data from the data input section 9a to the central control bag W. , 1. Note that a remote control relay 5 for load control (a latching relay that can be turned on and off by a hand switch) is controlled by the control output of a control terminal 3 disposed in the distribution board 6 or relay control board 6a. It is now possible to do so.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, the address setting section of the control terminal was formed by a dip switch, which resulted in a complex configuration and a binary system. There were problems in that the display was easy to make mistakes and difficult to understand. In addition, there was a dip switch on the surface that was easy to operate, so there was a possibility that it could be damaged.

The present invention has been provided in view of the above-mentioned points, and an object of the present invention is to provide a remote control terminal device in which a unique address can be easily set, and furthermore, it cannot be tampered with.

[Means for Solving the Problems] The present invention forms an address setting section using an EEFROM so that its data can be freely set using an optical wireless signal, and a light receiving element that receives the optical wireless signal is covered with a filter. This is what I did.

[Function] Since the address setting section is formed of EEPROM and its data can be freely set using optical wireless signals, the configuration is simple and the unique address can be easily set and repeated. At the same time, by setting the address using optical wireless signals, it is possible to prevent tampering, and by covering the light receiving element that receives optical wireless signals with a filter,
This is to prevent malfunctions caused by unnecessary infrared rays.

[Example 1] Figures 1 to 3 show one example of the present invention.
The figure shows an overall block diagram of the control terminal 3, and FIG. 3 shows a block diagram of the transmission module A of FIG. 2.

As shown in FIG. 3, the transmission module A includes a signal processing circuit 10 made up of a microcomputer, an address setting part 11 made of EEPROM, an optical signal receiving part 12 made of a photodiode PD and transistors Qs+Qs, and a light emitting part 12 made of a photodiode PD and transistors Qs+Qs. diode LD and transistor Q,
An optical signal transmitter 13 consisting of a Zener diode ZD
A power supply circuit 14 includes a transistor Q2, a return circuit 15 includes a resistor R and a transistor Q3, a reset circuit 16, and an oscillation circuit 17.

As shown in Figure 2, the output sides of the four sets of transmission module A are connected to four sets of photocouplers PC++ and PC+x, respectively.
, . . . are provided with four sets of drive circuits 18z, 18+z, . Each drive circuit 18□, 18□ is connected to a terminal T, -T4 which is connected to an external remote control relay 5, respectively, and is also provided with a common terminal Tc. Furthermore, for load monitoring, the signals at each terminal T,... are connected to a photocoupler PC.
The signals from the transistors Tr, . . . are input to the signal processing circuit 10 of the transmission module A.

Now, the transmission signal Vs transmitted via the signal line 4 is input to the signal input terminal of the signal processing circuit 10 via the transistor Q, and the circuit power supply of each terminal circuit including the signal processing circuit 10 is , are supplied via a power supply circuit 14 that makes the rectified voltage of the transmission signal Vs constant. In addition, the signal processing circuit 10 determines whether the unique address data set in the address setting section 11 matches the address data of the received transmission signal Vs, and controls data to be transmitted subsequently when the addresses match. Now, we will import the dimming control data) and create the drive circuit 1 corresponding to the specified load.
Control 8.

Here, the remote control relay 5 is a two-winding latching relay, and the signal output from the 17th terminal or the 18th terminal of the transmission module A causes the thyristor SCR, .
Alternatively, SCR+t is turned on to change the direction of the current between the remote control relay 5 and the common terminal Tc, thereby controlling the load on or off. The state of this load is input to the signal processing circuit 10 via the photocoupler PC1, the transistor Tr, etc., and is created as a monitoring signal indicating the operating state of the load. A return signal V- is now sent from the return circuit 15 to the signal line 4 to return this monitoring data to the central control unit W1 as a current mode signal (a resistor R with a low resistance value is inserted in the signal line 4). There is.

On the other hand, writing of data to the EEPROM constituting the address setting section 11 is performed by the signal processing circuit 10, and the signal received by the optical signal receiving section 12 is written by a data setting device (not shown). ), and a response signal such as a reception confirmation signal is transmitted from the optical signal transmitter 13 as an optical wireless signal, ensuring that data is transmitted wirelessly between the control terminal 3 and the data setting device. It is now possible to transmit.

FIGS. 1 and 4 show the refinement of the control terminal 3. The terminal case 20 is formed into a single module size according to the distribution board agreement, and the engaging claw 29a is engaged with the terminal case 20. Matching hole 2
It is composed of a body 20a that is assembled by engaging with the body 9b, and a cover 20b. Further, a signal processing circuit 10 consisting of a microcomputer, an address setting unit 11 consisting of an EEFROM, a photodiode PD and a light emitting diode LD for transmitting and receiving optical wireless signals, and a light emitting diode LDc for displaying reception are mounted on a printed circuit board block 21. It is mounted and housed in the terminal case 20.

Further, on the front surface of the terminal case 20, that is, on one end side of the cover 20b, an opening 22a corresponding to the light emitting diode LD and the photodiode PD, and an opening 22b corresponding to the display light emitting diode LDc are provided, respectively. As shown in FIGS. 1 and 5, the opening 22a for transmitting and receiving optical wireless signals is provided with a filter 23 for cutting unnecessary infrared rays. Further, FIG. 6 shows a state in which the light emitting diode LDc is exposed through the opening 22b, and a translucent nameplate 30 is attached to the concave surface 27 of the cover 20b, where the opening 22b and the filter 23 are provided. be done. In addition, in the case of a nameplate that is not translucent, the opening 22
b and the filter 23 may be cut out.

Further, a pair of signal line connection terminals 24 and a common terminal 31 are provided at the center of the terminal device coos 20, and four load connection terminals 25 are provided at the ends, each terminal 24, 25.3.
1 is composed of a terminal plate and a terminal screw, respectively.

Note that the load connection terminal 25 is connected to the inside through a lead wire 32. On the other hand, the body 20a of the terminal case 20 is provided with a mounting groove 26 into which a connecting plate or a DIN rail mounting adapter is mounted. In the circuit shown in FIG. 2, the terminal 25 is connected to the terminals T1 to T.
, but the terminal 24 is the terminal Ts, Ts, and the terminal 31 is the terminal T
They correspond to c.

The operation of the embodiment will be described below. Now, the terminal device case 20 of the control terminal device 3 is formed to have one-module dimensions according to the distribution panel agreement size, and is provided with a mounting groove 26, so that a connecting plate is fitted into the mounting groove 26. It can be easily installed in a distribution board by attaching a DIN rail mounting adapter.

On the other hand, the address setting section 11 is formed of an EEPROM, and the data (32 bits) that can be written into this EEPROM can be written and read out as needed by the signal processing circuit 10. . In other words, if the unique address, terminal type, control method, or monitoring method is changed during system construction or when changing the load or switch layout, the data setter can be used to set the specified data. When the optical wireless signal is set and an optical wireless signal is transmitted, the optical wireless signal is received by the optical signal receiving section 12 via the filter 23, and the data processed by the signal processing circuit 10 is written into the EEPROM of the address setting M11. In this case, E
EPROM saves data even if there is a power outage.
Since a backup power source is not required and data can be rewritten electrically, unique addresses can be easily set and changed. In addition, a filter 23 is provided in the opening 22a.
This feature prevents malfunctions caused by unnecessary infrared rays. In addition, address settings (channel settings) can be made numerically, which makes settings easier than when setting with binary codes using dip switches.

[Embodiment 2] FIGS. 7 to 9 show another embodiment, which is a monitoring terminal device in which the size of the terminal coos 20 is 2 times the size of the distribution board agreement.
This is the size of an individual module. FIG. 9 shows a circuit diagram of transmission module A, which has a configuration in which four contact outputs as load monitoring signals are input, and a pair of terminals T
A signal is input between +, Tz, . . . , and the signal is input to the signal processing circuit 10 via the photocoupler PC1 .

Then, in the signal processing circuit 10, it is sent back as a monitoring signal as in the previous embodiment.

7 and 8 show the structure of the monitoring terminal 2, in which the printed circuit board block 21 consists of two upper and lower printed circuit boards 21a.
, 21b, and a photodiode PD, a light emitting diode LD, and a reception display light emitting diode LDC are mounted on the upper printed circuit board 21a. This printed circuit board 21a is disposed on the back surface of the cover 20b with screws 32, and the body 20a and cover 20b are assembled and connected with fixing screws 33. Further, a filter 23 is provided in the opening 22a facing the photodiode PD and the light emitting diode LD, as in the previous embodiment, and the concave portion 2 of the cover 20b is provided with a filter 23.
A nameplate 30 is attached to 7.

At one end of the cover 20b, four sets of connection terminals 34 each having a lead wire 35 are provided, to which a contact output is input, and at the other end of the cover 20b, a power terminal 3 to which AC 24V is input is arranged.
6 and a signal terminal 37 to which a signal line is connected are provided. In the circuit shown in FIG. 8, the terminals T, -T correspond to the connection terminal 34, and the terminals T*, T+. correspond to the terminals T1. .

It is compatible with TI2.

[Effects of the Invention] As described above, the present invention has an address setting section in an EEPROM.
The address setting section can be set using an optical wireless signal, and the light-receiving element that receives the optical wireless signal is covered with a filter.
Since it is formed in EPROM and the data can be freely set using optical wireless signals, the configuration is simple and the unique address setting operation can be easily performed.
Moreover, by setting the address using optical wireless signals, it is possible to prevent tampering, and since the light-receiving element that receives optical wireless signals is covered with a filter, malfunctions caused by unnecessary infrared rays can be prevented. This has the effect of being able to prevent this.

In claim 2, since the terminal device is used for controlling a relay that controls a load, when the ll1M of the load is changed, the unique address can be easily changed using the optical wireless signal, and the unique address can be quickly changed according to the load. It can correspond to

In addition, in claim 3, the terminal device is used for load monitoring into which contact output is input, so that when the type of load is changed, the unique address can be easily changed using the optical wireless signal, and the load It is possible to respond quickly.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is an overall circuit diagram of the same as above, Fig. 3 is a circuit diagram of a transmission module as above, and 5 is a sectional view of the main parts of the same, FIG. 6 is a sectional view of the main parts of the same, and FIG. 7 is an exploded perspective view of another embodiment of the same. , FIGS. 8(a) to (C) are a plan view, a front view, and a side view of the same terminal, FIG. 9 is a circuit diagram of the same, and FIG. 10 is a schematic configuration of the remote monitoring and control system according to the present invention. FIG. 11 is an explanatory diagram of the same operation as above. 1 is a central control unit, 2.3 is a terminal device, 4 is a signal line, 10 is a signal processing circuit, 11 is an address setting section, 20 is a terminal device case, and 23 is a filter.

Claims (3)

[Claims] (1) A signal processing circuit that receives transmission signals including data such as address data and control data sent from a central control unit via a pair of signal lines and processes the signals; and an address setting section that sets a unique address. In a remote control terminal device, which is housed in a terminal device case, and has a signal processing circuit configured to compare received address data and a unique address, and when the addresses match, take in the control data of the transmission signal and control the load. A remote control terminal, characterized in that an address setting section is formed of an EEPROM, the data thereof can be freely set using an optical wireless signal, and a light receiving element for receiving the optical wireless signal is covered with a filter. (2) The remote control terminal device according to claim 1, characterized in that it is used for controlling a relay that controls a load. (3) The remote control terminal device according to claim 1, characterized in that it is used for load monitoring into which a contact output is input.