JPS62172835A - Wireless local transmission system - Google Patents

Abstract

PURPOSE:To eliminate a non-operation and a malfunction of a satellite terminal equipment by bringing plural pieces of slave satellite terminal equipments having only a signal receiving part from a wireless terminal equipment, to a wired OR connection by wire into the same receiving range. CONSTITUTION:To a signal line 5 from a master machine 1, a general terminal equipment 2 and plural repeating satellite terminal equipments 7 are connected. Also, the terminal equipment 7 receives by wireless a signal from plural one directional wireless terminal equipments 8. From the terminal equipment 7, a leased signal line 5a is led out, and plural slave terminal equipments 7a are brought to a wired OR connection to this signal line 5a. Plural pieces of slave terminal equipments 7a which have been connected to one terminal equipment 7 are brought to a wired OR connection into the same receiving range of a signal from the terminal equipment 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wireless local transmission system using wireless terminals as a sublocal system of a time division multiplex transmission load control system using a leased line.

[Background Art 1] Figure 5 shows a schematic configuration diagram of this type of time division multiplex transmission load control system. First, the basic configuration of this time division multiplex transmission load control system will be explained.
A plurality of terminal devices 2 each having a unique address are connected to a base device 1 consisting of a U, etc. via a signal line 5, and the terminal devices 2 are grouped into one or the same channel by control output. For example, the lighting load 3 is controlled to blink. Parent 8
! The transmission signal cyclically time-divisionally transmitted from 1 to each terminal 2 via signal a5 is tj116.
I! The configuration is as shown in I. That is, a start signal for synchronization, address data corresponding to each terminal device 2, control data for controlling lighting and extinguishing of the lighting load 3, and monitoring input data from the terminal device 2 are sent to m.
The transmission signal consists of a return waiting period for sending back to the machine 1, etc. However, starting from parent 8!1,
Transmission signals consisting of address data, control data, return waiting period, etc. are cyclically transmitted to each terminal device 2 in a time-sharing manner via signal $5, and in terminal device 2, its own address matches the address data of the transmission signal. Then, following the address data (control data is read), operations such as turning on and off the lighting load 3 are controlled based on this control data.In addition, such data on the lighting load 3 on and off state is transmitted. The signal is returned as monitoring input data to the base unit 1 within the signal return waiting period, and the base unit 1 monitors the status of the lighting load 3 based on the monitoring input data.Then, the base unit 8!1 monitors from the terminal unit 2. Based on the input data, it is sent as control data when transmitting the next transmission signal so that the display section 6 of the terminal device 2 is turned on or off depending on the lighting or turning off state of the lighting load 3.The terminal device 2 uses this control data. The terminal a2 is equipped with a switch 4 that controls the lighting load 3 to turn on and off, and the operation input of this switch 4 is used as monitoring data in the same manner as above. The data is sent back to the parent 8!1, and the parent 8!1 transmits control data for turning on or off the lighting load 3 to the terminal 2 based on the monitoring data.

By the way, there are wireless terminals for transmitting data wirelessly to terminals. That is, a satellite terminal device that relays the functions of the above-mentioned terminal device is connected to the signal line 5, and monitoring input data such as address data and control data for this satellite terminal device is arbitrarily set and these data are transmitted wirelessly. It is a wireless terminal that transmits light. Data is transmitted from this wireless terminal to the satellite terminal, and the satellite terminal receives the transmitted data (N) and stores the address data and monitoring input data, and uses these address data and monitoring input data to perform normal operations. As a terminal device, it sends and receives data to and from 1lI1 by time-division transmission.Therefore, when a wireless terminal receives a signal of The same address and the same data will be exchanged at the same time with the satellite terminals.In other words, the return signal to the base unit 1 will be duplicated, resulting in a data error.Therefore, the reception of multiple satellite terminals In order to ensure that the signals transmitted by wireless terminals from locations with overlapping ranges are input to only one satellite terminal, the wireless terminal side is subject to sub-production restrictions, or narrowing down the directivity. However, there has been a problem in that the range of applications for wireless terminals has become narrower.

[Objective of the Invention 1] The present invention has been provided in view of the above-mentioned points, and is intended to solve the problem of non-operation or malfunction due to multiple identical operations with the base unit of satellite terminals connected to the #l system within the same reception range. The purpose of the present invention is to provide a wireless local transmission system that solves the problem using a parent-child satellite terminal system.

1 Disclosure of the invention 1 Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows a schematic configuration diagram of a wireless local transmission system. In addition, the satellite terminal 7 can wirelessly receive signals from a plurality of one-way wireless terminals 7. The one-way wireless terminal 8 wirelessly transmits signals to the satellite terminal 7. In addition, a dedicated wired signal line 5a is led out from the satellite terminal 7, and a plurality of child satellite terminals 7a, which will be described later, are connected to this signal line 5a by wire-OR. The child satellite terminals 7a connected to one satellite terminal 7 are connected to multiple wired terminals within the same -91g range (within visual field in the case of optical wireless) of the signal from the one-way wireless terminal 8. It is connected to or.

FIG. 2 shows a block diagram of the parent satellite terminal device 7, which includes a terminal processing section 10 that sends and receives transmission signals to and from the aiso 1 via the signal M5, and a light beam from the one-way wireless terminal device 8. A reception g14 consisting of a pin diode or the like that receives wireless signals, a reception data processing section 15 that processes signal data from the reception section 14, and address data and monitoring input processed and output from this reception data processing section 15. An address data storage section 16 and a monitoring input data storage section 17 for respectively storing data via an ordate 12, a child satellite terminal 7a, and a feed 7.
It is composed of a connected wired-OR section 13 and the like.

Then, the data stored in the address data storage section 16 and the monitoring input data storage section 17 are used as the address data and monitoring input data of the transmission signal for each terminal! The data is input to the first part 10, and data is exchanged with Mlml.

The rtS3 diagram shows a block diagram of the child satellite terminal 7a, and shows a receiving section 19 that receives a signal from the one-way wireless terminal 8, other child satellite terminals 7a, the parent satellite terminal 7, and the wireless terminal 7s. The secondary satellite terminal 7a has only a receiving fIIi function for sending signals to the satellite terminal 7.

FIG. 4 shows a block diagram of the one-way wireless terminal 8, which includes a 7-dress setting unit 28 for setting its own 7-dress, and a monitoring input section into which the control status of negative balance and control data are input. 29, and the outgoing data processing J! that processes the set address data and monitoring input as data to be sent!
The transmission section 31 includes a transmitting section 30, and a transmitting section 31 including an LED, etc., which wirelessly transmits the signal from the transmitted data storage section 30 to the satellite terminal 7 using infrared #iI light or the like.

Therefore, the address setting f of the one-way wireless terminal 8
An arbitrary address is set in the ls28, and the monitoring input data of the monitoring input section 29 is input, and these address data and monitoring input data are output from the sending data processing section: (0 to 7 address data from the sending M section 31). and monitoring input data are serially transmitted wirelessly. In the child satellite terminal 7a, this signal is received by the receiving section 19, and its output is input to the satellite terminal 7 via signal #15a, and further the OR date 12 is transmitted. The output is sent to the received data processing fils15 via C). The received data processing section 15 distinguishes between address data and monitoring input data, and stores them in the address data storage section 16 and the monitoring input data storage section 17, respectively. There, for the first time, satellite terminal 7
serves as a normal terminal device having address data and monitoring input data, and sends and receives data to and from base unit 1 by time-division transmission. In other words, the relay satellite terminal 7 is a terminal with a free address, and upon receiving address data from the one-way wireless terminal 8, normal terminal processing begins.

Here, even if multiple child satellite terminals 7 receive the same signal at the same time, the wired-OR signal itself is
Since the wireless transmission signal only passes through the receiving section 19, there is almost no delay in the output signal of each child satellite terminal 7a, and there is no signal distortion that could lead to malfunction or non-operation. Therefore, there is no error in the duplicate signal. There is almost no error, and the data is processed normally by the satellite terminal 7. The above is also the case when the reception W614 of the parent's satellite terminal 7 is input in person. *Also, the receiving section 14 in the satellite terminal 7 may be omitted.

Effects of the Invention 1 As described above, the present invention connects a plurality of child satellite terminals having only a receiving section that receives No. 44 from a wireless terminal device within the same reception range, and Since the device and the satellite terminal are connected by wire, if one child satellite terminal receives No. 1, 1 transmitted from the wireless terminal, the received output will be input to the satellite terminal. This means that, compared to the conventional system where multiple satellite terminals receive data at the same time, resulting in data failure, multiple satellite terminals do not receive data at the same time, and malfunctions or non-operations occur due to poor data transmission with the base unit. Therefore, the wireless local reception system of the parent satellite terminal and child satellite terminal is replaced with the conventional one-relay satellite terminal, the reception range is widened, and there are no restrictions on the operation or directivity of the wireless terminal. This has the effect of facilitating application and development.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention, ttS2 is a block diagram of the satellite terminal device shown above, FIG. 3 is a block diagram of the child satellite terminal device shown above, and FIG. 4 is a unidirectional wireless terminal device shown above. FIG. 5 is a schematic block diagram of a general time division multiplex transmission load control system, and FIG. 6 is a diagram showing a seven format transmission signal. 11, t['l, 2 is i lie, 5, 5 ml, t(R
'>IiA, 7 is a satellite terminal, 7a is a child satellite terminal, 8 is a wireless terminal, 10 is F for each terminal! !
19 indicates a receiving section. Agent Patent Attorney Ishi 1) Ai Figures 7, 1 and 3

Claims (1)

[Claims] (1) A base unit and multiple terminal devices each having a unique address and connected to the base unit via a signal line are provided, and an address corresponding to each terminal is provided from the base unit via the signal line. A transmission signal consisting of data, control data for load control connected to the terminal device, return waiting period, etc. is cyclically transmitted to each terminal device in a time-division manner, and input for load control is performed within the return waiting period of the transmission signal. This is a time division multiplex transmission load control system in which monitoring input data such as information and load control status is sent back from the corresponding terminal device to the main device, and a satellite terminal device for relaying is connected to the above signal line. A wireless terminal is provided to wirelessly transmit signals such as address data and monitoring input data arbitrarily set in advance to the satellite terminal, and the satellite terminal transmits address data and monitoring input data sent from the wireless terminal, respectively. In the wireless local transmission system, the receiving unit receives the signal from the wireless terminal in the wireless local transmission system configured to store and receive the address data of the transmission signal and the monitoring input data to be returned within the return waiting period with the base unit. What is claimed is: 1. A wireless local transmission system characterized in that a plurality of child satellite terminals having only one satellite are wired or connected within the same reception range, and the child satellite terminals and the satellite terminals are connected by wire.