JPH01195795A - Centralized automatic metering device - Google Patents

Abstract

PURPOSE:To use detectors of different form in mixture by allowing a pulse system setting means to set number of pulse signals sent through the detection of one prescribed measuring quantity by plural detection means to a central control means. CONSTITUTION:An address code included in a call signal is revised into an address code of relay transmitters 200, 300... sequentially to collect data of all the relay transmitters 200, 300... connecting to a central device 100 and detected data of all meters M11-Mnn connecting to them. Then a control section 102 of the central device 100 calculates the collected detection data twice or a half in response to the type of transmitters T11...Tnn preset by a pulse system setting section 116 to give a correct value. Then the data are displayed on a display section 108. Thus, even when detection means of different form are used in mixture to detect a correct value.

Description

[Detailed Description of the Invention] [Special Field of Application] This invention relates to a data collection device for a plurality of distributed detection devices, and in particular to a data collection device for a plurality of distributed detection devices, particularly for data collection devices for water, gas, electricity, etc., installed for each customer. This invention relates to a centralized automatic meter reading device that detects the amount of water and aggregates it centrally in a solid device.

[Conventional technology] A conventional centralized automatic meter reading device will be explained using FIG. 2.

In the figure, a detection bag is installed at each customer and outputs a detection signal for each predetermined amount of power consumption.
(abbreviated as meter) Mth ~ M1n, M2+ ~ M2n
, M n + to M n n are transmitters (T++) that convert the output signal from the meter M into a predetermined transmission signal.
~(Tl,), (T2 +:) ~(T2n), (T
ll+) to (T, o) are connected to each other. All of these are collectively referred to as a transmitter (1).

Transmitter (Tl +) ~ (Tl.), (T2 +) ~
(T2o), (Tn+) to (Ton) further have connection boxes (B++) to (B+n), (Ill+) to (
B11), (Bnl) to (Boo) are connected, and transmission lines (2-1), (2-2),
(2-r+), the first relay transmission device Z (3-D,
(3-2) and (3-n).

Each first relay transmission device (3-1), (3-2), (3-
JT) are connected to second relay transmission devices (5-1) to (5-n) via transmission lines (4-1) to (4-n).

In the first relay transmission device (3-1), the input interface (8) is connected to the transmission line (2-1), and the input interface (8) is connected to the transmission line (2-1).
2-1) converting the voltage level of the signal received through the converter into a logic signal. The control circuit (9) consists of a microprocessor, is connected to the input interface (8), reads its output signal, and performs other data processing necessary for transmission.A counter (lO) is connected to the control circuit (9). , the data of the transmitting devices (Tth) to (Tln), that is, the data representing the power consumption of each meter (Hz) to (MIn) are multiplied by M. The memory (11) stores data necessary for the operation of the control circuit (9), and the display circuit (12) is connected to the control circuit (9) and is a transmitting/receiving circuit (B) that inputs/outputs data and displays it. is connected between the control circuit (9) and the transmission line (4-1) and performs signal processing for transmission and reception.

In the second relay transmission device ff (5-1), the transmitter/receiver circuit (14) transmits! ! (4-1) and transmits and receives signals to and from the transmitting/receiving circuit (13)
5) receives the signal from the transmission line (4-1) and converts it into a signal to be output to the transmission line (6), or vice versa. The transmitting/receiving circuit (16) is connected between the transmission line (6) and the control circuit (15), and transmits and receives signals between them.

The transmitting devices (τth) to (Tlo) output a predetermined signal every predetermined power consumption date, and the signal is transmitted to the connection box (Bth) to (B+n), the transmission line (2-1), and the input interface. It is input to the control circuit (9) via (8). When the control 11 circuit (9) detects a change in the signal of the input interface (8), it outputs the signal to the counter (10) and advances the count by one step. By repeating this, each meter (M++) to (M
+. ) data is accumulated.

Meanwhile, the solid device (7) transmits Ii! in order to collect the data of the counter (10) in a timely manner. For example, the second relay transmission device i! outputs a paging signal sequentially to the second relay transmission devices (5-1) to (5-n) via (6). When (5-1) receives the calling signal via the transmitter/receiver circuit (16), the control circuit (15) transmits the call signal via the transmitter/receiver circuit (14)! (4
-1) through the first relay transmission device (3-1) to (3-
output a selection signal to n). First relay transmission device 1 (3
-1), the control circuit (9) includes a transmitting/receiving circuit (13
), it reads the contents of the counter (10) and then sends it to the solid device following the reverse path of the aforementioned ringing and selection signals. Similar processing is performed on other first relay transmission devices (3-2) to (3-n).
and other second relay transmission devices (5-2) to (5-n)
The solid device (7) collects data from all meters (Mth) to (M.0).

[Problem to be solved by the invention] The conventional centralized automatic meter reading device is configured as described above, and detects, for example, the amount of electricity, etc. for each customer, and the aggregated results are collectively sent to the solid device. It is centrally aggregated and displayed or output. Therefore, the detection devices used to detect electric energy, etc. must be of a unified type, and it is virtually impossible to mix detection devices with different pulse generation methods by replacing the detection devices. It had some problems.

This invention has been made to solve the above-mentioned problems, and provides a centralized automatic meter reading system that can use a mixture of different types of detection devices. A plurality of detection means are arranged in parallel with each other and emit a predetermined number of pulse signals each time they detect a predetermined measured quantity, and a pulse signal emitted from each of the plurality of detection means is coupled to a plurality of detection means. a first signal conversion means that superimposes each address signal and outputs it to a transmission line in synchronization with a predetermined timing signal; and a first signal conversion means that is connected to the first signal conversion means via the transmission line.

a second signal conversion means that separates the signal from the pjSl signal conversion means received via the transmission line into a pulse signal and an address signal in synchronization with a predetermined timing signal; The number of pulses is counted for each detection means based on the pulse signal and address signal, the total number of counted pulses is divided or multiplied by the number of pulse signals emitted by the plurality of detection means, and the value is calculated as the total result. A central control means for accumulating and outputting a predetermined measurement quantity, and a plurality of detection means each store and output a predetermined measured quantity.
and a pulse method setting means for setting the number of pulse signals to be emitted each time the detection is performed.

[Function] The detection means is, for example, an electronic power meter, which is distributed for each customer, and for each predetermined measured quantity, for example,
Outputs a detection signal such as a pulse signal.

The contact systems used for pulse generation are the C contact type, which generates two pulses with one switching operation, and the A contact type, which generates one pulse with one switching operation. .

The first signal conversion means is provided for each of the plurality of detection means, adds an address signal for each detection means to the pulse signal from each detection means, converts it into a predetermined transmission signal, and converts the pulse signal from the respective detection means into a predetermined transmission signal. Output to the transmission line in synchronization with the signal.

The second signal conversion means is opposite to the first signal conversion means,
The transmission signal from the first signal conversion means received via the transmission line in synchronization with a predetermined timing signal is separated into a pulse signal from each detection means and an address signal for each detection means.

The central ff, 11 control means is, for example, an automatic control device having a microprocessor, and counts the number of pulses for each detection means based on the pulse signal and address signal separated by the second signal conversion means, and calculates the number of pulses for each detection means. The total number of pulses detected is divided or multiplied by the number of pulse signals emitted each time each of the plurality of detection means detects a predetermined measurement quantity, and the value is multiplied by M as the total result, or printed on a printer or display device. Output to etc.

The pulse method setting means sets, for each of the plurality of detection means, the number of pulse signals to be emitted each time each detection means detects a predetermined measurement quantity once, to the central control means.

[Example] An example of the centralized automatic meter reading device according to the present invention is shown in FIGS. 1 and 2 (A), (B), (C') and (
This will be explained using D).

In FIG. 1, a solid device (100) as a central control means and a second signal conversion means includes a control section (102) consisting of a microprocessor, a storage section (104) for storing calculation programs and detected data, A setting unit (106) for setting the readout number of the detection device from which detection data is to be read and other setting values, and a control unit (102).
A signal transmission unit (110) that performs signal conversion and input/output control between the logical signal to be processed and the cyclic digital signal input/output between the transmission line (150), and a control unit (102). ), a display unit (108) for displaying detected data, etc., and each detection device output a predetermined amount by 1.
and a pulse method setting section (116) for setting the number of pulses to be emitted each time the detection is performed.

A plurality of relay transmission devices (200), (300), , , , which are first signal conversion means are connected to the transmission line (150).

Each relay transmission device (200), (300), .
A signal transmission unit (202), (302), which converts into a logic signal used in , , or conversely, converts a logic signal into a cyclic digital signal, and a plurality of detection means, such as a power pointer, etc. The first interface (212) is connected to (Mth) to (Mfin) (hereinafter abbreviated as meter) via transmitters (Tth) to (Ton) and connection boxes (B+ +) to (Bnll). ), (312
), , , and the control unit (204), (304), , ,
A counter (210) that is connected to the meter (M++) and increments the count by one each time it receives a signal from the meter (M++).
, (310)100. and a control unit (204),
Connected to (304) and counters (210), (310)
A storage unit (208) that stores the count number of , , , (
308), , and the respective relay transmission devices (200
), (300), , , address setting section (206), (306),
, , , each meter (M
a second interface (214), (314), for connecting a portable operating device (500), which is a portable control means for setting initial display values of u) to (M.n);
, , and a connector (216).

(316), .

Transmitters () connected to meters (Mu) to (Mno)
Tu) to (τfill) are shown in Fig. 2 (A) and (B
) and the so-called C contact type, which is a three-wire type, and the so-called A contact type, which is a two-wire type, as shown in FIGS. 2(C) and (D).

When C contact type transmitters (Tu) to (T,,,) are used, the counter (210) of the relay transmission device (200) is initially connected to contact a as shown in FIG. 2(A). When contacts a and C change from a state in which contacts a and b are in contact to a state in which contacts a and C are in contact as shown in Fig. 2 (B), the first pulse is counted. The second pulse is counted when the state in which contacts a and C are in contact with each other changes to the state in which contacts a and b are in contact as shown in FIG. 2(A).

On the other hand, if A contact type transmitters (Tu) to (T,,) are used, the relay transmission equipment (200
) counter (210) starts from the state where contacts a and b are separated as shown in FIG. 2(D), and then changes as shown in FIG.
The first pulse is counted when contacts a and b are in contact as shown in Figure 2(C), then the second pulse is counted. Figure (D
)! = When the contact points a and b shift to a state where they are separated as shown, the number of pulses is 31.

Therefore, as the oscillator (Tu +) ~ (T,,) A
Depending on whether a contact type or a C contact type is used, a correct value may not be obtained unless the value of the counter (210) is doubled or halved. Therefore, the type of each transmitter (Tu) to (T1..) is set and input in advance using the pulse method setting section (116) of the solid device (100).

Next, the operation of the embodiment will be explained.

For example, the counter (210) of the relay transmission device (200)
In order to collect the data, the address code of the relay transmission device (200) is input by the setting unit (106) of the solid device (100). The control unit (102) reads this set value, converts it into a predetermined cyclic digital signal in the signal transmission unit (110), and then transmits it to the transmission line (150).
output as a call signal.

A solid device (100) and each relay transmission device (200),
(30o) , , .

, and the relay transmission device v1. , by sequential polling from the solid device (100). (200),
(300), .

0. is called to send and receive the necessary data.

Sends a dress signal. This address signal includes an address code therein, and is used to identify which relay transmission device the relay transmission device is transmitting from the solid device (100), and is sent to the address setting section (206) of the relay transmission device. ,(
306) A relay transmission device having an address code matching the set value of , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , the relay transmission device having the address code matching the set value is called as the signal transmission partner. 11 outgoing signal is sent to each relay transmission device (200)
, (300), , (7) Signal transmission section (202)
, (302), , , and is converted into a predetermined logic signal and then sent to the control section (204), (304), ,
, is output to .

Each control section (204), (304), , , ,
are each address setting section (206), (306),...
, each relay transmission device (200
) , (300) , , , address code,
The address code included in the input signal is compared to determine whether the call signal is output to itself.

If the address codes match, the count number of the counter (210) stored in the storage section (20B) of (200) of the relay transmission device is used as a detection signal, and the signal is passed through the reverse route of the above-mentioned calling signal. solid equipment (100
).

By sequentially changing the address code included in the call signal to the address code of the relay transmission devices (200), (300), . . . , all the relay transmission devices (200) connected to the solid device (100) ), (300),,
, , and detection data of all the meters (Mth) to (Mnn) connected to these can be collected. Furthermore, the control unit (102) of the solid device (100)
) doubles or halves the value of the collected test ui data depending on the type of each transmitter (1 port) to (Tn, ) set in advance by the pulse method setting unit (116).
1=A correct value is given by calculation. and,
These data are displayed on the display section (108).

[Effects of the Invention] As described above, the centralized automatic meter reading device according to the present invention sets the pulse method for each detection means, that is, how many pulses are used for a predetermined unit usage amount, using the pulse method setting means. Since the detected data can be aggregated or accumulated after performing the necessary calculations depending on the format, it has the effect of being able to detect the correct value even when detection means of different formats are used together. .

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a centralized automatic meter reading device according to the present invention, and FIGS. 2 (A), (B), (C), and (D) are transmitters used in connection with the detection means, respectively. FIG. 3 is a diagram showing a conventional centralized automatic meter reading device. In the figure, (100) is a solid device, (108) is a display unit, (
116) is a display switching unit, (118) is an interface, and (200) is a display switching unit. (300), . . . are relay transmission devices, and (Tn) to (Tn) are transmitters.

Claims (1)

[Claims] (1) a plurality of detection means that are arranged in a distributed manner and each of which emits a predetermined number of pulse signals each time it detects a predetermined measurement quantity; a first signal converting means for superimposing respective address signals of the detecting means and outputting the same to a transmission line in synchronization with a predetermined timing signal; a second signal converting means that separates a signal from the first signal converting means received via a transmission line into the pulse signal and the address signal in synchronization with the predetermined timing signal; counting the number of pulses for each detection means based on the pulse signal and the address signal separated by the conversion means, and dividing the total number of counted pulses by the number of pulse signals emitted by the plurality of detection means; or a central control means for multiplying and accumulating and outputting the resulting value as a total result, and a pulse method setting means for setting the number of pulse signals to be emitted each time each of the plurality of detection means detects a predetermined measured quantity once. A centralized automatic meter reading device equipped with and.