JP3843788B2 - Terminal function setting method for remote control monitoring system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a terminal function setting method of a remote monitoring control system for setting a function of a terminal connected to a central processing unit by a time division multiple access method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a configuration of a remote monitoring control system, a configuration as shown in a conventional example of Japanese Patent No. 3157842 is known. That is, as shown in FIG. 4, the central processing unit 31 includes a plurality of operation terminals 32 for monitoring the operation state of the switch SW and a plurality of control terminals 33 for controlling the load L. Are connected via the signal line Ls. A separate address is set for each of the operation terminal 32 and the control terminal 33, and the central processing unit 31 recognizes the operation terminal 32 and the control terminal 33 individually using these addresses.
[0003]
The central processing unit 31 sends a transmission signal Vs having a format as shown in FIGS. 9A and 9B to the signal line Ls. That is, the transmission signal Vs is an address data signal for transmitting a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating a signal mode, address data for calling the operation terminal 32 and the control terminal 33 separately. AD, control data signal CD for transmitting control data for controlling load L, checksum data signal CS for detecting transmission error, time slot for receiving return signals from operation terminal 32 and control terminal 33 This is a time-division multiplexed signal of double poles (± 24V) consisting of a signal return period WT, and data is transmitted by pulse width modulation.
[0004]
In each operation terminal 32 and each control terminal 33, when the address data transmitted by the transmission signal Vs received via the signal line Ls matches the preset address data, the control data is transmitted from the transmission signal Vs. In response to the signal return period WT of the transmission signal Vs, the return data is returned as a current mode signal (a signal transmitted by short-circuiting the signal lines Ls via an appropriate low impedance).
[0005]
The central processing unit 31 is provided with dummy signal transmission means and interrupt signal processing means. The dummy signal transmission means sets the mode data signal MD to the dummy mode, and constantly transmits a dummy transmission signal having an empty address not set in the operation terminal 32 and the control terminal 33 as address data. Further, the interrupt signal processing means detects the operation terminal 32 that has generated the interrupt signal Vi when the interrupt signal Vi as shown in FIG. 9C generated by any one of the operation terminals 32 is accepted. Thereafter, the operation terminal 32 is accessed to return the reply data. That is, the dummy signal transmitting means always sends a dummy signal to the signal line Ls, and the interrupt signal Vi generated from the operation terminal 32 in accordance with the operation of the switch SW is synchronized with the start pulse signal ST of the dummy transmission signal. When detected, the interrupt processing means sends out the transmission signal Vs from the central processing unit 31 with the mode data signal MD as the address confirmation mode. In the address confirmation mode, the operation terminals 32 having a common address are grouped, and the transmission signal Vs is collectively obtained for each group. When the transmission signal Vs whose mode data signal MD is the address confirmation mode is transmitted, the operation terminal 32 that has generated the interrupt signal Vi is synchronized with the signal return period WT of the transmission signal Vs. The address data set in is returned as reply data. In this way, the central processing unit 31 acquires the address of the operation terminal 32 that generated the interrupt signal Vi, and connects to the operation terminal 32 by accessing the operation terminal 32 using the acquired address. The monitoring data corresponding to the operated state of the switch SW is received as reply data.
[0006]
Based on the monitoring data returned from the operation terminal 32, the central processing unit 31 creates control data to be transmitted to the control terminal 33 connected to the load L for which the correspondence relationship with the switch SW is set in advance. At the same time, the transmission signal Vs including the control data is sent to the signal line Ls, and the control data is transmitted to the corresponding control terminal device 33 to control the load L.
[0007]
The operation terminal 32 can connect up to four switches SW independent from each other, and the control terminal 33 is configured to connect up to four loads L independent from each other. ing. That is, 2-bit load number data is set for each of the operation terminal 32 and the control terminal 33 to which the same address data is set, so that a maximum of four switches SW and loads L can be identified. It is.
[0008]
Incidentally, the operation terminal 32 and the control terminal 33 have a configuration as shown in FIG. 6 (the operation terminal 32 is shown in the figure). In other words, the processing unit 21 including a dedicated integrated circuit incorporating a microprocessor is provided, and the function of delaying the load L on or off by operating the switch SW connected to the processing unit 21 is provided in the storage unit. It can be set by function data stored in 22. Address data is also stored in the storage unit 22. An EEPROM is used for the storage unit 22, and the contents can be rewritten through the processing unit 21. The power supply for the operation terminal 32 is obtained by full-wave rectifying and stabilizing the transmission signal on the signal line Ls by the power supply circuit 24. The transmission signal is input to the processing unit 21 through the transmission signal processing unit 23.
[0009]
The contents of the storage unit 22 are set by receiving a wireless signal by light such as infrared rays from a setting device 34 (see FIG. 7) provided outside through the radio signal transmitting / receiving unit 25. The setting device 34 is configured to be able to set and check the function data and address data stored in the storage unit 22, and alternatively transmits a wireless signal of the setting mode and the checking mode to thereby process the processing unit. 21 performs a corresponding process. When the wireless signal is normally received, the wireless signal transmitting / receiving unit 25 transmits a wireless signal for reception confirmation to the setting device 34.
[0010]
In the terminal function setting method of the remote monitoring and control system shown in Japanese Patent No. 3157842, the setting device 34 transmits a mode switching signal to the terminal devices 32 and 33 to be set and the data to be set is present. The signal is transmitted to the central processing unit 31 via a signal line Lt connecting the setting device 34 and the signal line Ls. In the central processing unit 31, a transmission signal including data transmitted from the setting unit 34 through the signal line Ls is transmitted. Further, when the terminal devices 32 and 33 receive the mode switching signal by the wireless signal from the setting device 34, the terminal devices 32 and 33 are shifted to the setting mode. Stored address and function data are set.
[0011]
[Problems to be solved by the invention]
By the way, in the setting method of the terminal function using the wireless signal as described above, unlike a setting method using a conventional dip switch or the like, it is easy even for a terminal device mounted on a high place such as a ceiling or a wall surface. Can be set. In this case, the terminal function of each terminal device is set by the worker transmitting a wireless signal from the setting device toward each terminal device. However, when many terminals are installed in the same room, the position of the radio signal receiving unit of the terminal to be set is close to that of other terminals, and the wireless signal of the setting device to be set It is necessary to bring the transmitter and the set radio signal receiver on the terminal side as close as possible. That is, when a wireless signal is transmitted from the setting device in a state where the wireless signal transmitting unit and the wireless signal receiving unit are relatively separated from each other, even terminals that are not the setting target may react to the signal. Therefore, when an operator who is unfamiliar with the operation performs the setting work, a terminal device different from the setting target may operate as the setting mode, and the setting work time may be prolonged because the setting work is performed again. It was.
[0012]
The present invention was devised to solve such problems, and remote control monitoring that can set only a desired terminal device even when the distance between the setting device and the terminal device is relatively large. It is an object to provide a method for setting a terminal function of a system.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a function of a terminal for a desired terminal among a plurality of terminals connected to a central processing unit via a signal line in a time division multiple access system. A setting unit for setting setting information such as function data for determining the address and address data for determining the address of the terminal unit in a storage unit provided in the terminal unit, and the setting unit includes an operation unit for performing a setting operation of the setting information, and an operation unit A wireless transmission / reception unit that transmits the setting information by a wireless signal having a predetermined format to a terminal device to be set when the setting operation is performed by the unit, and the terminal device receives the wireless signal from the setting device When the wireless signal transmission / reception unit receives the wireless signal, the wireless signal transmission / reception unit sends back a registration request signal for causing the central processing unit to perform registration processing. When a registration completion signal is transmitted, the processing unit stores the setting information in a storage unit and returns a setting completion signal, and the central processing unit receives the wireless signal from the one terminal device. When a registration request signal is returned, a setting prohibition signal for prohibiting the processing after reception of the wireless signal is simultaneously transmitted to all terminals other than the terminal, and the setting completion signal is returned. When this happens, the setting prohibition release signal for canceling the prohibition of the processing after the wireless signal reception is simultaneously transmitted.
[0014]
With this configuration, in a terminal device that has received a wireless signal indicating setting information such as address data and function data from the setting device, a registration request signal for causing the central processing device to perform registration processing is returned or the central processing device in the terminal device. When a registration completion signal is transmitted from the apparatus, the setting information is stored in the storage unit and a setting completion signal is returned. Further, in the central processing unit, when the registration request signal is returned from one terminal that has received the wireless signal, the processing subsequent to the reception of the wireless signal is directed to all other terminals other than the terminal. A setting prohibition signal that prohibits the processing after the reception of the wireless signal is transmitted all at once when a setting prohibition signal for prohibiting the transmission is transmitted all at once.
[0015]
Moreover, it is preferable that the processing unit transmits / receives a wireless signal for confirming a setting state from the radio signal transmitting / receiving unit to a setting device before returning a signal indicating completion of the setting process. In this case, before the setting information such as address data and function data is stored in the terminal device to be set, a wireless signal for confirming the validity of the setting information in the terminal device is transmitted to the setting device. After confirmation by the operator, a confirmation wireless signal is returned to the terminal.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
The terminal function setting method of the remote control monitoring system according to the present embodiment is the same as the conventional configuration of the basic configuration of the central processing unit 31, the operation terminal 32, the control terminal 33, and the setting unit 34. The processing procedure related to the setting process is different. Therefore, the difference will be mainly described. However, in the present embodiment, the operation terminal 32 and the control terminal 33 in the conventional configuration are treated as the terminal 30 without being distinguished. Further, as described above, the processing unit 21 in the terminal device of the conventional configuration determines whether its own state is the setting mode or the confirmation mode, and determines its operation. In addition to the setting mode, the confirmation mode, and the normal mode, the processing unit 27 in the terminal device 30 of the present invention includes a non-setting mode that prohibits setting of setting information such as address data and function data in the terminal device. The action is determined. This non-setting mode is for prohibiting setting in a terminal device other than the setting target terminal device and preventing an address or a function from being set in the terminal device that is not the target by mistake. When a signal indicating a setting prohibition request is transmitted from 31, the terminal device that has transmitted the signal shifts to the non-setting mode.
[0017]
Next, the transition to each mode and the function of each part will be described. Of the terminals connected to the signal line Ls, the terminal 30 that has received the wireless signal indicating the setting start request from the setting unit 34 at the radio signal transmitting / receiving unit 25 shifts itself to the setting mode, and the central processing unit. 31 generates an interrupt signal Vi. Then, the transmission signal processing unit 23 returns a transmission signal Vs indicating a registration request to the central processing unit 31 and enters a reception waiting state for a transmission signal indicating a registration reply transmitted from the central processing unit 31. Here, when it is confirmed that a signal indicating the registration reply has been transmitted, the setting process is executed and the mode is shifted to the normal mode.
[0018]
On the other hand, when the terminal that has not received the wireless signal confirms that the transmission signal indicating that the setting is prohibited from the central processing unit 31 is transmitted by the transmission signal processing unit 23, the change of the setting information is prohibited. Transition to non-setting mode. In the terminal that has been shifted to the non-setting mode, the signal received by the wireless signal transmitting / receiving unit 25 is blocked. That is, no processing is performed in the processing unit 27 even if the signal is received by the wireless signal transmission / reception unit 25. The terminal in the non-setting mode maintains the non-setting mode until it is confirmed that the transmission signal indicating the setting prohibition cancellation is next transmitted from the central processing unit 31, and when the transmission signal is confirmed, the terminal is shifted to the normal mode. The
[0019]
A transmission signal indicating a setting prohibition request for shifting the terminal to the non-setting mode and a transmission signal indicating a setting prohibition canceling request for canceling the non-setting mode are sequentially transmitted to all terminals other than the terminal to be set. Will be. In this case, for the address data signal AD of the transmission signal Vs, the addresses of all the terminals other than the setting target terminal are sequentially designated by the terminals connected to the signal line Ls. The mode data signal MD is designated with a signal indicating a setting mode, a non-setting mode, or the like.
[0020]
In addition, as shown in FIG. 2, the storage unit 22 in the present embodiment is additionally provided with a buffer circuit 26 for temporarily storing data, and the address data and function data transmitted from the setting device 34 are necessary periods. Saved.
[0021]
When using the setting device 34 as described above, as shown in FIG. 7, the operator holds the window portion 51 of the wireless transmission unit of the setting device 34 toward the light receiving window 52 of the operation terminal device 32. The wireless signal is transmitted by operating a button provided on the upper surface of the setting device. First, the details of the procedure for setting the function data and address data of the terminal will be described with reference to FIG. A state in which function data and address data are set is selected in advance by operating the operation unit 11 of the setting device 34, and a button such as a numeric keypad on which the function and address to be set are provided on the upper surface of the setting device 34 is operated. It is assumed that it is input appropriately. In this situation, when the wireless signal from the setting device 34 is held at a position where it can be received by the terminal device to be set and the start button is pressed, the address data and the function data indicating the setting start signal are wireless signals. (S1). In the terminal device that has received the setting start signal, setting information such as address data and function data from the data included in the wireless signal is stored in the buffer circuit 26 and operated in the setting mode. The terminal in the setting mode sends out an interrupt signal Vi for notifying other terminals that it has entered the setting mode via the signal line Ls, and the transmission signal Vs is returned from the central processing unit 31. Wait for it. When this transmission signal is transmitted from the central processing unit 31, the terminal in the setting mode returns a signal indicating a registration request for registering the setting information included in the wireless signal in the central processing unit 31 (S2). .
[0022]
When the central processing unit 31 receives a signal indicating a registration request, the central processing unit 31 broadcasts a signal indicating setting prohibition for prohibiting setting of setting information to terminal devices other than the terminal device to which the registration request is transmitted. That is, the address data signal AD sequentially specifies the addresses of all terminals other than the setting target terminal, and the mode data signal MD designates the non-setting mode (S3). The terminal device that has received this registration prohibition signal shifts to a non-setting mode in which the change of the setting information is prohibited, and the signal received by the wireless signal transmitting / receiving unit 25 is blocked. Next, information in the signal is analyzed, setting information such as address data and function data is extracted, and registration processing is executed. When the registration process is completed, a signal indicating a registration reply is sent to the terminal device to be set, that is, the terminal device in the setting mode (S4). When a signal indicating a registration reply is transmitted to the terminal device in the setting mode, the setting information stored in its buffer circuit is formally written in the storage unit 22 as setting information, and the mode is shifted to the normal mode. When returning to the normal mode, the interrupt signal Vi is generated again, and a setting completion signal indicating that the setting in the terminal is completed is returned to the central processing unit 31 (S7).
[0023]
When the central processing unit 31 receives this setting completion signal, it sends a setting prohibition release signal for canceling the prohibition of setting to the terminal in the non-setting mode (S8). The terminal in the non-setting mode to which this setting cancellation signal has been transmitted is shifted to the normal mode, and the wireless signal transmitting / receiving unit 25 is enabled to receive the wireless signal.
[0024]
The terminal device that has received the wireless signal including the address data and the function data from the setting device 34 as described above shifts to the setting mode and returns a registration request signal for causing the central processing unit 31 to perform registration processing, or the central processing device. When a registration completion signal is transmitted from the device 31, setting information such as address data and function data is stored in the storage unit 22, and a setting completion signal is returned. In addition, the central processing unit 31 receives a signal of the registration request and transmits a setting prohibition signal for shifting to a non-setting mode for prohibiting setting processing in a terminal device other than the terminal device, or the setting completion signal In response, a setting prohibition release signal for shifting from the non-setting mode to the normal mode is transmitted simultaneously. That is, the terminal that has received the setting prohibition signal operates in the non-setting mode, and the signal is ignored even if the wireless signal transmitting / receiving unit 25 receives the wireless signal. Therefore, there is at most one terminal in the setting mode capable of receiving a wireless signal among the terminals connected to the signal line Ls, and the setting is performed with the distance between the setting device and the terminal being extremely close. Even if the distance between the setting device and the terminal device is relatively large, setting is not performed for a terminal device that is not a setting target.
[0025]
(Embodiment 2)
Since this embodiment is also basically the same as the first embodiment, only the differences will be described. As shown in FIG. 3, the present embodiment includes a step for confirmation by an operator before setting information is stored in a terminal. That is, a wireless signal indicating a setting confirmation request indicating that the setting work in the terminal device has been completed is transmitted from the terminal device to the setting device 34 (S5). Specifically, the terminal device that has received the transmission signal indicating the registration reply signal from the central processing unit 31 receives a wireless signal indicating a setting confirmation request indicating completion of the setting operation via the wireless signal transmitting / receiving unit 25 to the setting device 34. Sent.
[0026]
On the other hand, when the wireless transmitter / receiver 13 receives the signal indicating the setting confirmation request, the setting device 34 confirms that the setting operation has been performed normally, and then receives the setting operator's confirmation button to confirm the setting. A wireless signal indicating a reply is transmitted to the terminal again (S8). The terminal that has received the signal indicating the setting confirmation reply returns a setting completion signal to the central processing unit 31. In this case, since the completion of the setting operation in the terminal is transmitted to the setting device 34, the setting operation can be performed efficiently without wasting time.
[0027]
【The invention's effect】
The terminal function setting method of the remote control monitoring system of the invention according to claim 1 is such that the terminal device that has received the setting prohibition signal operates in the non-setting mode, and the wireless signal transmission / reception unit receives a wireless signal. The signal is ignored. Therefore, there is at most one terminal that has a setting mode capable of receiving wireless signals among the terminals connected to the signal line, and the setting must be made with the distance between the setting unit and the terminal extremely close. Even if the distance between the setting device and the terminal device is relatively large, setting is not performed for a terminal device that is not a setting target.
[0028]
In the terminal function setting method of the remote control monitoring system of the invention according to claim 2, since a signal indicating the completion of setting is returned to the central processing unit, it is transmitted to the setting device that the setting work in the terminal device is completed, Setting work can be performed efficiently without wasting time.
[Brief description of the drawings]
1 is a communication sequence diagram at the time of data setting in Embodiment 1. FIG.
FIG. 2 is a block diagram showing a configuration of a system in the first embodiment.
FIG. 3 is a communication sequence diagram at the time of data setting in the second embodiment.
FIG. 4 is a schematic configuration diagram showing a conventional example.
FIG. 5 is a block diagram of a setting device in a conventional example.
FIG. 6 is a block diagram of a terminal in a conventional example.
FIG. 7 is an explanatory diagram showing a setting method in a conventional example.
FIG. 8 is a front view showing a setting device in a conventional example.
FIG. 9 is an operation explanatory diagram showing a format of a transmission signal used in the remote monitoring control system.
[Explanation of symbols]
13 Wireless Transmission / Reception Unit 22 Storage Unit 25 Wireless Signal Transmission / Reception Unit 27 Processing Unit 30 Terminal Unit 31 Central Processing Unit 34 Setting Device

Claims (2)

Functional data that determines the function of the terminal and the address that determines the address of the terminal for a desired terminal among a plurality of terminals connected to the central processing unit via the signal line in a time division multiple access system A setting device that allows setting information such as data to be set in a storage unit provided in the terminal device,
A setting unit comprising: an operation unit configured to perform a setting operation of the setting information; and a wireless transmission / reception unit configured to transmit the setting information by a wireless signal having a predetermined format to a terminal device to be set when the setting operation is performed by the operation unit; With
The terminal device returns a registration request signal for causing the central processing unit to perform registration processing when the wireless signal transmission / reception unit receives the wireless signal from the setting device, and when the wireless signal transmission / reception unit receives the wireless signal, In addition, when a registration completion signal is transmitted from the central processing unit, the processing unit stores the setting information in a storage unit and returns a setting completion signal.
When the registration request signal is returned from the one terminal device that has received the wireless signal, the central processing unit prohibits the processing after the wireless signal reception to all the terminal devices other than the terminal device. A setting prohibition request signal is transmitted simultaneously, and when the setting completion signal is returned, a setting prohibition release request signal for canceling the prohibition of processing after receiving the wireless signal is transmitted simultaneously. Terminal function setting method for remote monitoring and control system. 2. The remote monitoring control system according to claim 1, wherein the processing unit transmits and receives a wireless signal for confirming a setting state from the wireless signal transmitting and receiving unit to a setting device before returning a signal indicating completion of setting processing. Terminal function setting method.

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