JPH0530573A - Telemeter terminal equipment and telemeter system - Google Patents

Abstract

PURPOSE:To shorten a data collecting time in a telemeter center station. CONSTITUTION:A telemeter terminal equipment inputs data measured by a telemeter 11 through a data input part 7, converts the input data into digital signal by an A/D converter 8 and stores the digital signal in a memory 9. After storing the data of the self-station in the memory 9, the terminal equipment poles a telemeter terminal equipment of another station, collects the data of the other station through a communication line 4 and stores the collected data in the memory 9 of the present station. The telemeter center station 5 poles the telemeter terminal equipment and collects the data of the present station and the data of other stations stored in the memory 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telemeter terminal device for transmitting collected data to a telemeter central office, and a telemeter system having a plurality of telemeter terminal devices and a telemeter central office for collecting data from each telemeter terminal device. .

[0002]

2. Description of the Related Art Conventionally, in a telemeter system, as a data collection method in a telemeter central station, the telemeter central station designates each telemeter terminal device for polling, and the designated telemeter terminal device collects at its own station. The data was sent to the central station of the telemeter.

[0003]

In the case of such a system, since the telemeter central station sequentially polls the telemeter terminal devices, the data collection time per station is not complete until all the data of all stations are collected. (Hereinafter, it is represented by the symbol t.) And the number of stations (hereinafter, represented by the symbol n) are required to have a time of nt. However, in a telemeter system using a general subscriber line as a communication line between a telemeter central station and a telemeter terminal device, most of the data collection time t per station is to call (hereinafter referred to as dialing). It is a time required (hereinafter, represented by a symbol a), and an actual data communication time (hereinafter, represented by a symbol b) is very short. Therefore, when the number of stations of the telemeter terminal device is large, there is a problem that the completion of data collection at the telemeter central station is delayed due to dialing for each station.

SUMMARY OF THE INVENTION An object of the present invention is to provide a telemeter terminal device and a telemeter system capable of shortening the data collection time at the telemeter central office.

[0005]

According to another aspect of the present invention, there is provided a telemeter terminal device for storing data, a memory device for storing data of a local station in a memory, and a telemeter terminal device of another station. Data collecting means for collecting the data of the other station and storing it in the memory, and a transmitting means for transmitting the data of the own station and the data of the other station stored in the memory to the central station of the telemeter in response to polling of the central station of the telemeter. It is equipped with and.

In this telemeter terminal device, in the memory,
The own station data storage means stores the own station data, and the other station data collection means stores the other station data of the telemeter terminal device. Then, in response to the polling of the telemeter central station, the data of the own station and the data of the other station stored in the memory are transmitted to the telemeter central station by the transmitting means.

According to another aspect of the present invention, there is provided a telemeter system in which a telemeter terminal device of a first type having a function of collecting data of another station together with data of its own station and a polling of the telemeter terminal device of the first type are responded to. Then, the second type of telemeter terminal device that transmits the data of its own station to the first type of telemeter terminal device and the first type of telemeter terminal device are polled, and the first type of telemeter terminal device Telemeter terminal device data and second
And a central telemeter station for collecting data of telemeter terminal devices of a type. The first type of telemeter terminal device has a memory for storing data, a local station data storage unit for storing data of its own station in the memory, and a telemeter terminal device of another station by polling the telemeter terminal device of another station. Other station data collection means for collecting and storing the data in the memory and a transmission means for transmitting the data of the own station and the data of the other station stored in the memory to the telemeter central station in response to the polling of the telemeter central station. Have

In this telemeter system, the first type of telemeter terminal device stores the data of its own station in the memory and polls the second type of telemeter terminal device to store the data of the second type of telemeter terminal device in the memory. To store. The telemeter central station polls the first type telemeter terminal device and collects the data of the first type telemeter terminal device and the data of the second type telemeter terminal device from the first type telemeter terminal device. .

According to a third aspect of the present invention, in the second aspect of the invention, the first type telemeter terminal device, the second type telemeter terminal device, and the telemeter central office are connected by a general subscriber line. It is a thing.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 relate to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the telemeter system of this embodiment. In the present embodiment, an example in which the number of telemeter terminal devices is 3 will be described. This telemeter system comprises three telemeter terminal devices 1, 2, 3
, A telemeter central station 5 for collecting data from each telemeter terminal device, and a communication line 4 using a general subscriber line connecting the telemeter terminal devices 1, 2, 3 and the telemeter central station 5.

FIG. 1 is a block diagram showing the configuration of each telemeter terminal device in FIG. The telemeter terminal devices 1, 2 and 3 include a data input section 7 for inputting data measured by the measuring instrument 11, and an analog-digital converter for converting analog signal data input from the input section 7 into digital signal data. 8, a memory 9 for storing the output data of the analog-digital converter 8, a communication control unit 10 connected to the communication line 4, a data input unit 7, a memory 9 and a communication control unit 10, and a telemeter. And a microcomputer 6 for controlling the operation of the entire terminal device. The memory 9 stores a program for the microcomputer 6 to control the telemeter terminal device and data necessary for this control, and also stores data of the telemeter terminal device of another station as described later. ing. The communication control unit 10 is adapted to control dialing and incoming calls to other stations.

FIG. 3 is a functional block diagram showing functions of the microcomputer 6 in FIG. As shown in this figure, the microcomputer 6 controls the data input section 7 and the memory 9 to store the data of the own station measured by the measuring machine 11 in the memory 9 in the own station data storage means 21.
Another station data collecting means 22 for controlling the memory 9 and the communication control unit 10 to poll the telemeter terminal device of the other station to collect the data of the telemeter terminal device of the other station and store the data in the memory 9. 9 and the communication control unit 10 to transmit the data of the own station and the data of other stations stored in the memory 9 to the telemeter central station 5 in response to the polling of the telemeter central station 5. I have it.

Next, the operation of this embodiment will be described.

In this embodiment, it is assumed that the telemeter terminal device 2 relays the data of the telemeter terminal device 3, and the telemeter central station 5 instructs the telemeter terminal device 2 to relay the data of the telemeter terminal device 3 in advance. Sent. The time at which the telemeter terminal device 2 polls the telemeter terminal device 3 is also instructed to the telemeter terminal device 2 from the telemeter central station 5 in advance.

Each of the telemeter terminal devices 1, 2 and 3 collects data measured by the measuring machine 11 at a predetermined fixed time. That is, the microcomputer 6 inputs the data of the measuring device 11 through the data input section 7 at a fixed time by the local station data storage means 21 of FIG. 9 is stored. The data stored in the memory 9 is transmitted in response to polling from the telemeter central station 5 or another telemeter terminal device having a relay function.

Here, the telemeter terminal device 2 stores the data of its own station in the memory 9 and then controls the transmission control section 10 by the other station data collecting means 22 of FIG. Then, the telemeter terminal device 3 is polled via the communication line 4, the data stored in the memory 9 of the telemeter terminal device 3 is collected via the communication line 4, and stored in the memory 9 of its own station.

When collecting the data of each telemeter terminal device, the telemeter central station 5 first polls the telemeter terminal device 1 via the communication line 4, and the data collected by the telemeter terminal device 1 is sent via the communication line 4. To receive. By this time, the telemeter terminal device 2 has polled the telemeter terminal device 3 to complete the reception and storage of the data of the telemeter terminal device 3. The polling of the telemeter terminal device 1 of the telemeter central station 5 and the polling of the telemeter terminal device 3 of the telemeter terminal device 2 may be performed at substantially the same time. The telemeter central station 5 polls the telemeter terminal device 2 after collecting the data of the telemeter 1 and requests to transmit the data of the telemeter terminal device 2 and the data of the telemeter terminal device 3. In response to the polling of the telemeter central station 5, the telemeter terminal device 2 transmits its own data stored in its own memory 9 to the telemeter central station 5 and receives it from the telemeter terminal device 3 and stores it in the memory 9. The stored data is transmitted in response to the request from the telemeter central station 5. In this way, the telemeter central station 5
Is a telemeter terminal device 1 and a telemeter terminal device 2
The data of the telemeter terminal devices 1, 2, and 3 is collected by polling.

As described above, assuming that the time required for dialing is a and the actual data communication time is b, the telemeter central station 5 operates the telemeter terminal devices 1, 2, 3 as in the conventional case.
Data collection time is 3 if polled individually
X (a + b) = 3a + 3b. On the other hand, according to this embodiment, the data collection time from the telemeter terminal device 1 is (a + b), and the data collection time from the telemeter terminal device 2 is (a + 2 × b). Collection time is (a + b) + (a + 2 × b) = 2
It becomes a + 3b. Since b is much smaller than a, according to this embodiment, the telemeter central station 5 can collect data in about two-thirds the time compared with the conventional one.

In the present embodiment, the case of three stations has been described, but it is also possible to use two stations, and it is also possible to apply it to four or more stations, and at least one of a plurality of telemeter terminal devices is used. If the data of another station is relayed, the data collection time of the telemeter central station can be shortened. For example, in the case of four stations, if the two stations relay the data of other stations, the data collection time can be shortened to about half that of the conventional case. Further, the telemeter terminal device that relays data of other stations may relay data of a plurality of other stations.

[0021]

As described above, according to the present invention, the number of times of polling from the telemeter central station to the telemeter terminal device can be reduced, and the data collection time at the telemeter central station can be shortened. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a telemeter terminal device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a telemeter system according to an embodiment of the present invention.

FIG. 3 is a functional block diagram showing functions of the microcomputer in FIG.

[Explanation of symbols]

1, 2, 3 telemeter terminal device 4 communication lines 5 Telemeter Central Station 6 microcomputer 7 Data input section 9 memory 10 Communication control unit

Claims (3)

[Claims] 1. A memory for storing data, a local data storage means for storing data of its own station in the memory, and a data collection of other station for collecting data of a telemeter terminal device of another station and storing it in the memory. Means for transmitting the data of its own station and the data of another station stored in the memory to the telemeter central station in response to polling of the telemeter central station. . 2. A memory for storing data, a data storage means for storing data of the own station in the memory, and a telemeter terminal device of another station to collect data of the telemeter terminal device of another station. Other station data collecting means for storing in the memory, and transmitting means for transmitting the data of the own station and the data of other station stored in the memory to the telemeter central station in response to polling of the telemeter central station. A first-type telemeter terminal device; a second-type telemeter terminal device that transmits data of its own station to the first-type telemeter terminal device in response to polling of the first-type telemeter terminal device; Poll one type of telemeter terminal,
A telemeter system, comprising: a telemeter central station for collecting data of the first type telemeter terminal device and data of the second type telemeter terminal device from the first type telemeter terminal device. 3. The telemeter system according to claim 2, wherein the first type telemeter terminal device, the second type telemeter terminal device and the telemeter central office are connected by a general subscriber line.