JPS6074833A - Transmitter of meter inspection data - Google Patents

Abstract

PURPOSE:To discriminate the meter inspection data on a specific meter sensor at the center side by providing a transmission control part to an adaptor to transmit the device number data on the meter sensor to a sensor system together with the meter inspection data. CONSTITUTION:A detection part 201 of an adaptor 20A for unidirectional communication mode detects a start signal sent from a network controller 4 for terminal. A control part 202 controls with switching successively the switching parts 203 in the proper timing after the start signal is detected. The parts 203 contain meter sensors 8 and their corresponding switching parts C1, and each part C1 is connected to a sensor 8 and a transmission control part 204. The part 204 transmits the meter inspection data directly to the controller 4 excluding the meter device number data and its inverse data. These two data are converted into the value corresponding to the sensor 8 which is under selection at the part 202 and then transmitted. In a bidirectional communication mode, an address deciding part and a selective switch control part are used in place of the part 201 and the part 202 respectively.

Description

[Detailed description of the invention] [Technical field of invention] The present invention uses a subscriber telephone line to connect electricity and gas.

This invention relates to a meter reading data transmitting device that transmits meter reading data for water, etc., and particularly to a meter reading data transmitting device that has an improved adapter for switching between a plurality of meter sensors and transmitting meter reading data to a center side.

[Technical background of the invention and its problems]

Electricity typically utilizes existing subscriber telephone lines.

An automatic meter reading system that collects meter reading data for gas, water, etc. is configured as shown in Figure 1.

This system can be broadly divided into center system and network control system.

The terminal system (meter reading data sending device) is installed, and the center system is equipped with a computer 1 that collects meter reading data and performs necessary processing.On the other hand, the network control system is controlled by the center system The device 2, the exchange 3, and the terminal network control device 4 are connected in this order. The exchange 3 is provided with a no-ringing trunk 5 and a terminal network control device 4.
Telephones 1M and 1e are connected to the terminals. Furthermore, as a terminal system, each customer has a large number of electricity.

Meter reading meters 7, . . . for gas, water, etc. are provided, and the reading values of these meters 7, . . . are detected by corresponding meter sensors 8, . Each meter sensor 8 . . . is connected between the plurality of meter sensors 8 , . An adapter 9 for switching and selecting... is provided.

The configuration of this adapter 9 is slightly different between the A-mode communication method using a one-way communication mode and the B-mode communication method using a two-way communication mode, and specifically, as shown in FIGS. 2 and 3. It is composed of A mode adapter 9
As shown in FIG. 2, these components include an activation detection section 91 that detects an activation signal sent from the terminal network control device 4, and a sequential switching control section that sequentially outputs switching signals based on the output of this detection section 91. 92 and the switching signal from this control section 92 causes the meter sensor 8. A switching unit 93 that sequentially switches and selects...
It is made up of. In addition, the B mode adapter 9 is
As shown in FIG. 3, a control data receiving section 94 receives control data from the terminal network control device 4, and a meter sensor 8. A selection switching control section 95 outputting a selection switching signal for arbitrarily switching between...
and a switching section 93 that switches and selects the meter sensor 8 based on this selection switching signal.

By the way, when transmitting meter reading data using the above system, the meter reading data is sent to the center system using the transmission format shown in Figure 4 in the case of A mode and Figure 5 in the case of B mode. ing. Here, A mode means that when the center network control device 2 sends an activation signal to the terminal network control device 4, the control device 4 receives the signal and simply activates the meter sensor 8, etc. 8
The system sends meter reading data to the central system.

Figure 4 (A) shows the activation timing signal from the center network control device 2 to the terminal network control device 4, and the same figure (B) shows the activation timing signal from the terminal network control device 4 to the meter sensor 8, etc. Figure (C) shows the response signal sent from the terminal network control device 4 to the center network control device 2, and Figure (D) shows the meter reading data IOA sent from the meter sensor 8 etc. to the terminal network control device 4. ing.

Next, B mode means that the terminal network control device 4 sends various control data (bottom stain text) 7ZA (Fig. 5D) to the meter sensor 8, etc., and the meter sensor 8, etc. that receives the control data After confirming the above, meter reading data etc. [upstream telegram] 10A is sent to the center. (A) shows the activation timing signal from the center network control device 2 to the terminal network control device 4, and (B) shows the activation timing signal from the terminal network control device 4 to the meter sensor 8. C) is a response signal sent from the terminal network control device 4 to the center network control device 2; FIG. indicates meter reading data 10A transmitted from the meter sensor 8 etc. to the terminal network control device 4.

Therefore, the standard method for starting the meter sensor 8 and the like from the terminal network control device 4 is A mode. Therefore, even when the adapter 9 connects a plurality of meter sensors 8..., the adapter 9 sequentially connects the meter sensors 8 using a timer etc. when the terminal network control device 4 starts the adapter 9 in A mode. Startup is performed in A mode, and each meter sensor 8. The adapter 9 receives the meter reading data sent from ... and sequentially sends it to the terminal network control device 4.

On the other hand, in response to the activation from the terminal network control device 4 to the adapter 9 in the 8 mode, the adapter 9 activates the meter sensor 8 corresponding to the downlink message content in the B mode in the A mode, and thereby each meter Sensor 8. The adapter 9 receives meter reading data sent from ... and sequentially sends it to the terminal network control device 4.

On the other hand, in the computer 1, the meter reading data 1 (electricity, gas,
Since it is used to calculate usage charges for water, etc.
It must not be possible to collect meter reading data from other meter sensors 8 by mistake. Further, as the terminal network control device 4, a plurality of meter sensors 8. Since meter reading data is sent from..., it is necessary to be able to reliably distinguish that the data is from that meter sensor 8. Therefore, conventionally, we have considered setting a different instrument number to each meter sensor 8°, and sending out the meter reading data 10B including the instrument number data I2 as shown in Fig. 6 from the meter sensor 8. It will be done. At this time, the setting device number needs to match the one registered in advance in the center system computer 1, and in the case of A mode, the setting device number should be in the order of connection with the adapter 9, and in the case of B mode, it should match the one registered in advance in the central computer 1. It is conceivable to make it the same as the device number data 13 specified by the control data IIB shown in FIG. For this purpose, an adapter 9 is used as the meter sensor 8.
It is necessary to send out the device number data 12 that is the same as the terminal number.

However, since the device number of the meter sensor 8 is set at the time of manufacture, preparing meter sensors 8 with various device numbers becomes a significant hindrance in mass production. Also, meter sensor 8. ...One option would be to use a device that allows you to set the device number at the time of setup, but you would still be forced to set the device number at the time of setting or replacing the device.
This is not an operationally desirable peep.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and is capable of transmitting meter reading data that allows the center to determine that the meter reading data is from a specific meter sensor without setting a different device number to the meter sensor connected to the adder. The purpose is to submit the device.

[Summary of the invention]

The present invention is directed to a terminal network 11 device in which an adapter selects each meter sensor and sends meter reading data corresponding to the meter sensor to a sensor system, in which a terminal network control device is used as the adapter. In addition to a detection unit that detects a start signal or control data from the meter and a means for selecting a meter sensor according to the received content, a transmission control unit is provided, and this transmission control unit creates meter number data of the meter sensor. This is a meter reading data sending device that includes this data in the meter reading data and sends it to the center system.

[Embodiments of the invention]

First, since the overall configuration of the automatic meter reading system is almost the same as that shown in Fig. 1, the same numbers will be used here to explain 1 to 1.Hereinafter, embodiments of particularly different adapters in the present invention will be explained in Figs. 8 and 9. Explain with reference to. Figure 8 shows
The configuration of the adapter 20A according to the A mode is, specifically, a transmission control section 204 is built in in addition to an activation detection section 201, a sequential switching control section 202, and a switching section 203.

The activation detection unit 201 detects an activation signal in A mode from the terminal network control device 4, and the sequential switching control unit 202' appropriately switches the switching unit 203 after the activation signal is detected by the activation detection unit 201. Switching control is performed sequentially at appropriate timings. The switching unit 203 switches each meter sensor 8.・
The opening/closing parts CI, C2, . . . corresponding to the opening/closing parts CI, C2, . . . have opening/closing parts CI, C2, . - The other end side is commonly connected to the input end of the transmission control unit 204. It also has one opening/closing unit CO independent of the meter sensor 8, which is connected between the terminal network control device 4 and ground via a resistor 205, and another opening/closing unit CI.

The operation is opposite to that of C2, . . . .

The switching unit 203 sequentially switches and selects and activates the meter sensors 8I... under the control of the switching control unit 202, and transmits meter reading data from the meter sensors 8 to the transmission control unit 204. It is something. The transmission control unit 204 transmits the meter reading data from the meter sensor 8 sent by the switching unit 203 to the terminal network control device 4 as is except for the meter secret number data and its inverted data. The data has a function of sequentially converting the inverted data into a value corresponding to the currently selected meter sensor 8 in the switching control section 202 and sending it out.

On the other hand, in the B mode adapter 20B, as shown in FIG. The other parts have almost the same configuration as the A mode. This adapter 20
In B, the address determining section 206 determines the number of the meter sensor 8 to be selected from the control data sent from the terminal network control device 4 and transmits it to the selection switching control section 207. The selection switching control unit 207 controls the opening/closing parts CI and C2 of the switching unit 203 based on the content determined by the determining unit 206.
, etc., and activates the meter sensor 8 that is to read the meter. The transmission control unit 204 sends the meter reading data from the selected meter sensor 8 other than the meter equipment data and its inverted data as is to the terminal network control device 4, but the meter secret number data and its inverted data is detected by the address determination unit 206, converted into the value of the selected device number, and output.

For example, as shown in FIG.
A message assembling section 204A assembles and sends the secret number data 16 (see FIG. 11(B)) corresponding to the 0 number, and meter reading data from the meter sensor 8 (see FIG. 11(A)) and the message assembling section 204A. data (see FIG. 11(B)) and transmits either data to the terminal network controller flJ.
It monitors the data switching unit 204B that sends data to 4 and the meter reading data (see FIG. 11(C)), detects the timing to send the secret number data 17, and controls the important heritage assembly unit 204A and the data switching unit 204B. It consists of a data switching control section 204C. As for the operation of the transmission control unit 204, first, when the meter reading data from the meter sensor 8 is first sent, the data switching unit 204B controls the terminal network using the meter reading data from the meter sensor 8 as is. Send to device 4. In addition, the data switching control unit 204C
Now, monitor the meter reading data (Figure 11C) and check the secret number data 1.
7, the message assembly unit 20
The data switching unit 204B is switched to send the secret number data 16 from 4A to the terminal network control device 4. When the transmission of the secret number data 16 is completed, the meter reading data from the meter sensor 8 (FIG. 11A) is switched to be transmitted again to the terminal network control device 4. The same switching operation is performed for the inverted part of the meter reading data, and the meter reading data sent to the terminal network control device 4 (FIG. 11C) is the meter reading data from the meter sensor 8 (except for the secret number data 17). Meter reading data (FIG. 11C) having the same contents as FIG. 11A), but only the secret number data being the secret number data 16 corresponding to the selection by the adapters 20A and 20B, is sent.

Next, regarding the operation of the device of the present invention, first, the A mode adapter 20A will be explained. In the initial state, the sequential switching control unit 202 selects which meter sensor 8. ... has not been selected, so the switching section 203 is the opening/closing section CO.
is in a standby state with a connected standby impedance.

Here, when an activation signal is sent from the terminal network control device 4, the activation detection unit 201 detects activation from the activation signal and sequentially sends a notification to that effect to the switching control unit 202. As a result, the sequential switching control unit 202
By controlling opening/closing, the opening/closing part CO is opened, the opening/closing part CI is closed, and an activation signal is given to the meter sensor 8 of NO,1. As a result, the meter sensor 8 of N001 is activated and the meter reading data 10A or Z(
IJ8 is sent to adapter 20A. The meter reading data IOA or ZOB from the meter sensor 8 simply passes through the transmission control section 204, or is sent to him once it has been taken into the system, but in any case, the transmission control section 204 transmits the meter reading data. Of the JOB, data other than the secret number data Z2 and its inverted data are sent to the terminal network control device 4 without changing their contents. However, secret number data I
2 and its inverted data, the data sent from the meter sensor 8 is sequentially replaced with the value corresponding to the number selected by the switching control 202 and sent to the terminal network control device 4. Therefore, the secret number data 12 and its inverted data are replaced with the transmission data from the transmission control section 204. No. 1 meter sensor 8 receives meter reading data IO
After sending out the A, IOB, the switching control unit 202 sequentially controls the switching unit 203 to activate the meter sensor 8 of the next No. 62. The transmission control unit 2 also receives the meter reading data IOA and 10B from the meter sensor 8 of No. 2.
04 sequentially replaces only the secret number data 12 and its inverted data with values corresponding to the selection numbers sent from the switching control unit 202 and sends them to the terminal network control device 4. From now on, all meter sensors 8. By repeating the same process for . . . , all meter sensors 8. If the meter reading data IOA or IOB is sent out in the order shown in FIG. 12 (8) from ..., then K is obtained, but only the secret number data Z2 is sent out as a different value depending on the order of connection to the adapter 20A. I can do something. Note that FIG. 12(A) shows the activation timing from the terminal network control device 4 to the adapter 20.

Next, in the B-mode adapter 20B shown in FIG.
is not selected, and the switching unit 203 is in a standby state with the opening/closing unit CO closed and the standby impedance being 9. In this state, when control data 11A is received from the terminal network control device rIL4, the address determination unit 20
6 determines the address of the data, and selects the selection switching control unit 2.
07. Here, the selection switching control section 207 controls the switching section 203 based on the determination result of the address determination section 202.
A specific opening/closing section, for example, C2, is closed, and the meter sensor 8 of No. 2 is activated. The activated meter sensor 8 sends meter reading data IOA and IOB to the adapter 20B.

Here, the transmission control unit 204 of the adapter 20B transmits data other than the secret number data I2 and its inverted data in the meter reading data IOB sent from the meter sensor 8 as is to the network control device for the terminal, as in the case of the A mode. However, the secret number data Z2 and its inverted data are not replaced with the data from the meter sensor 8, but are sent to the terminal network control device 4 with the number determined by the address determination section 206. Therefore, the meter reading data IOA and IOB sent to the terminal network control device 4 are the secret number data 1.
2, a number corresponding to the meter sensor 8 selected by the adapter 20F3 is set. That is, adapter 2
All meter sensors connected to 0B8. ...
The secret numbers may be the same (for example, o o ''). A series of these transmission formats is shown in FIG. 13. In the same figure (A) 1, -1-Ura 1-I; Tabata Tsukuda 1
The transmission format that blooms into 2nR (B) shows the activation timing from the adder 20B to the meter sensor 8, and (C) shows the timing of starting the meter sensor 8.
The data shown in FIG.

Note that FIGS. 10 and 11 above show one method for generating the meter reading data (FIG. 11C) to be sent to the terminal network control device 4, and the meter reading data from the meter sensor 8 (C) is shown in FIG. 11A) to the terminal network control device 4, the secret number data 17 of the meter reading data (FIG. 11C) sent from the adapters 20A and 20B to the terminal network control device 4 is transmitted to the terminal network control device 4. Meter sensor 8 activated
Any method may be used as long as it has a value corresponding to the number and does not disrupt the message format or timing of the meter reading data sent to the terminal network control device 4.

〔Effect of the invention〕

As described in detail above, according to the present invention, the adapter converts the detected data sent from the meter sensor to the terminal network control device into a number corresponding to the meter sensor selected by the adapter. Since data is added and sent,
On the center side, it is easy to determine which meter sensor's meter reading data comes from from the secret number data of the received meter reading data, and especially in the case of B mode, the secret number data of the control data and the secret number data of the meter reading data are always distinguished. are not the same, therefore, there is no possibility of accidentally reading the needle of another meter sensor, and the checking function can be performed effectively. In addition, in the conventional system, it was necessary to set a different secret number for each meter sensor in order to distinguish the meter reading data between the meter sensors, but with the present invention, a secret number is set for each meter sensor. There is no need to differentiate between the two, and therefore the make sensor can be installed and replaced relatively smoothly, and it is possible to provide a meter reading data transmitting device that can greatly contribute to mass productivity.

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram of the automatic meter reading system, Figures 2 and 3 are configuration diagrams of A-mode and B-mode adapters used in the conventional device, and Figures 4 and 5 explain the conventional device. Figures 6 and 7 are diagrams showing meter reading data and control data when a secret number is set on the meter sensor, and Figures 8 and 9 are A mode used in the device according to the present invention. 10 and 11 are configuration diagrams and operation explanatory diagrams of the transmission control section of FIGS. 8 and 9, and FIGS. 12 and 13 are diagrams of this embodiment. FIG. 3 is a transmission format diagram illustrating the operation of the inventive device. DESCRIPTION OF SYMBOLS 1... Electronic computer, 3... Exchange, 4... Terminal network control device, 6... Exchange, 7... Meter, 8...
・Meter sensor, 20A, 20B...Adageta, 91
. . . Startup detection unit, 92 . . . Sequential switching control unit, 93.
...Switching unit, 94...Address determination unit, 95...Selection switching control unit. Applicant's representative Patent attorney Takehiko Suzue Figure 3 Figure 4 (E)? -7aii";";+0A Figure 6 1f Figure 7 3 Figure 8

Claims (1)

[Scope of Claims] A device that transmits meter reading data for electricity, gas, water, etc. using a subscriber telephone line, based on a signal indicating that the adapter should not be activated from a terminal network control device connected to the subscriber telephone line. a signal detection unit that detects a signal indicating that the adapter should not be activated; A switching control unit that sequentially outputs a switching signal or a selection switching signal according to the detection contents of the signal detection unit, and a meter sensor that connects the meter sensor to the adapter sequentially or optionally in response to the sequential or selection switching signal of the switching control unit. The meter reading data sent from the meter sensor via the switching unit that inputs the meter reading data, and the switching unit -, the meter number data or its inverted data is determined by the switching number of the switching control unit or the switching unit. A meter reading data sending device comprising: a transmission control unit that converts the detection data of the signal detection unit into a number corresponding to the data, and sends the converted data included in the meter reading data.