JPS59144241A - Data collecting device - Google Patents

Abstract

PURPOSE:To confirm easily the soundness of a master station by deciding on whether a high-order station is normal or not from a constant signal connected in series in a system wherein the master station collects data from plural slave stations. CONSTITUTION:The master station 10 sends out the constant signal to a carrier multiplexer 4 through a circuit 5, and another station 100 receives this signal from a circuit 112 to confirm that the master station is normal, and then operates as a salve station to send the constant signal to the following slave station 200 through a circuit 111. When the master station 10 goes to abnormal, the slave station 100 detects the abnormality of the master station 10 immediately because the constant signal is not received through the circuit 112, and then sends a polling signal to other slave stations as a substitute for the master station 10 to collect data from the remaining slave stations. The slave station 100, when the constant signal appearing on the circuit 112 is detected, confirms that the master station 10 has recovered the original function of the slave station.

Description

[Detailed Description of the Invention] This invention is a system for transmitting fresh information of restoration and revision, with one station as a master station and the other as a slave station. One of the slave stations becomes the current station and sends IA to a data collection device that collects data from the remaining slave stations.

In the past, there was a device shown in FIG. 1 as this type of device.

In Figure 1, (1) is a transmitter for transmitting data, (2) is an antenna, (3) is a demodulator, and (4) is a multigravitational system that divides the frequency of transmission and reception into 7f. These are the transport multiplexing devices that carry out the transmission, and these make up one 7-pin riJ (10). There are two in the slave station 1 (100), (101) is the information transmission front, and (102) is the father modulator, (103) demodulator, (104
), (105) are transport multiplexing devices, (106), (10
7) is a high-grid transformer that separates and outputs the 1g human power, and (108), (lOso), and (110) indicate relay scores. Same below as slave station 2 (200), slave station 3
(300)... It's been a long time since I've read it. In addition, it is assumed that the contact points of the Taniko station in the diagram are at the 17J beauty and urine mando.

I will explain the operation shortly. Consider a case where the current station (10) performs data collection for slave station 2 (200) K during a normal disconnection. Identification 1 output from news transmission table (1)
The polling finger of the fortune-telling code is branched at the quality control 4 (2) and the transport multiplex device (4), (105) and the hybrid transformer (100) and the transport multiplex device (104).
, (205) and is transmitted to slave station 2 (200). The slave station 2 (200) uses a high grid transformer (20
The polling command that delayed 0) is 1J! key-m (203
) is provided to the 11f transmitter (201) VC. In the n-report transmission table 1j1 (201), after identifying that the polling command is for the slave station 2 (200), the transmission 1d relay contact (210) is turned ON to turn 5.
Izumi Kintsugi 1. The sickle that was used, the specified data is pawned - the ticket (2δ2)
Output from contact (208), high grid (2υ7)
Data collection of one master station (10) is performed by transmitting e and d and returning it to the master station (10). Among them, other slave stations also receive the polling command, but do not receive it for a long time because it does not apply to their own station.

In this system, when the master station is different from the master station, the slave station close to the master station performs a puncture, and then the slave station 1 (101)) receives a constant polling command from the jL station (lO). If you tie it for more than an hour to show that there is no rice, move the relay contacts (108) and (109) to the dotted line side 7J.
By making the slave station 1 (100) work, the slave station 1 (100)
), it is important to send a polling command to slave stations after slave station 2 (20Ll) and collect data from the slave stations. Note that any slave station can also become a master station and collect data from the remaining slave stations.

Since the conventional data collection device is structured as described above, the backup function of the slave station (100) is performed smoothly when the master station is abnormal, but it is difficult to detect the recovery of the master station. Yes, every fixed period due to restoration (108)
, it became necessary to return the relay contact of (109) to the yield g1t+ and monitor the presence or absence of polling command 1 from station a, which often resulted in the system becoming unreliable.

This invention was made for the purpose of eliminating the above-mentioned problem in the conventional system where the monitoring of the recovery of the master station becomes complicated. To provide a data collection device that can easily confirm whether a master station is in good condition.

An embodiment of the present invention will be described below with reference to the drawings. Second
Figure 1/c2=-ite (5) , (111) , (112
) , (211) , (21,2) , (311) ,
(312) is a circuit for connecting each station in series to a constant signal.

I will now explain the previous work of this example. The data collection operation at the current station (10) is basically the same as in the case of the conventional device, but the master station (10) performs the recirculation (5) for the transport multiplexing device (4). by a constant signal (e.g. 100I10
0I119 Low-speed pulse signal that repeats N-OF F.

) tl'' is transmitted. As a result, the other station 1' (100)
This signal is received from the line (112), and the constant signal is 10
If it is 0N-OfI'F every gm5, it functions as a slave station and sends a signal similar to this to the absent slave station through the diversion (111) and occupies 1.

That is, by receiving the constant signal, slave station 1 (100) knows that since the master station (10) is performing LE operation, slave station 1 (100) can work as a slave station. Also, slave station 2 (201,1)
Since it can be seen that the signal from the second prefecture (212) to (6) is wrong as a slave station, it is persistent as a slave station.

In this state, when the master station (10) becomes abnormal, the constant signal of the slave station 1 (1tJO)K and even the time 1 urine (112) is not received, so that the master station (10)'s 4
Detecting 4 captives, slave station 1 (100) becomes a@ instead of tail station (10) and sends a polling command to the remaining slave stations.
Data is collected from the remaining slave stations. This time # (
111), the slave station 2 (200
) Indicates that the following stations will be able to function as 4Jj&.

Then, the slave station 1 (100) sends the master station (1
When it is detected that station 0) has recovered and a constant signal appears, it confirms that station 4 (10) has recovered and returns to its function as a slave station.

(200) If any of the slave stations in (4) does not receive a certain signal from the upper station, it becomes the master station and collects data from the remaining slave stations, and when it receives the certain signal again, it returns to the slave station. 1 has been pierced.

According to this embodiment, each station is separated from the data collection function and connected in series to a constant signal, so recovery of four stations is possible with a simpler configuration compared to periodic monitoring means that temporarily suspends data collection by conventional equipment. luck? This can improve data collection capabilities.

In addition, in the above embodiment, the constant signal K 100m5 ON
Although the -0FF pulse signal is sent out, any other signal can produce the same effect as the above embodiment if it is a transmittable identification signal.

As described above, according to the present invention, since the upper station is configured to determine whether there is an overload or an abnormality using a constant signal connected in series, it is possible to obtain a data collection device that can easily confirm the presence of the master station. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional data collection device, =I
The IJz diagram is a Glock diagram showing the data collection device according to the instant embodiment on the originating side. In the figure, (1) is an rk news transmission device, (2) a V′i modulator, (3) a demodulator, (4) a carrier multi-electronic device, and (5)
is a connection line, (101) is a broadcast transmission device, (102) is a modulator, (103) is a demodulator, (104), (105)
) are transport multiplexers, (106), (107) vi hybrid transformers, (108), (109) are relay contacts, (110) ld store relay contacts, (111)
, (112) are the direct reading lines. Number 6 in the 200s is the same as the 100s.

Claims (1)

[Scope of Claims] A plurality of news transmission devices are used, with one station being a master station and a local slave station, and when the master station is A money, I'i the master station is transferred from the slave station to the master station.When the master station is abnormal, one of the slave stations becomes the current station. In the case where data is collected from the remaining slave stations, each of the stations mentioned above is connected to a certain number 1d in series, and if it receives a certain signal, it becomes a slave station, and if the above certain signal is not affected, it becomes a slave station. It becomes the current station; a data collection device whose timing is to send a constant signal to the station.