JP3357753B2 - Centralized meter reading system for water meters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a centralized meter reading system of a water meter.

[0002]

2. Description of the Related Art In a centralized meter reading system of a water meter, several water meters are connected to one centralized meter reading board by electric wires to constitute one meter reading system (centralized meter reading system).

[0003] For example, in a ten-story apartment house, when the number of dwelling units per floor is ten, a system for reading the water meters of all the dwelling units of one ten-story building with one centralized meter reading board. In the case of (1), 100 water meters are connected to the centralized meter reading board with two-core cables (wires).

In such a centralized meter reading system, each water meter is connected to a corresponding terminal of the centralized meter reading board by an electric wire.
After connecting the wires, when starting up the centralized meter reading board, we are working to confirm that there is no mistake in the connection.

[0005] If the water meters of adjacent dwelling units (also called rooms) are incorrectly connected, there is a case where a compensation problem involving a water charge or the like may occur. To check whether there is a connection difference, use a centralized meter reading board to read the water meter value (water usage) of each dwelling unit (room) and check the actual water meter of the corresponding dwelling unit (room) at that time. If the value read and read by the centralized meter reading board matches the indicated value of the water meter of the corresponding dwelling unit (room), the water meter of the dwelling unit (room) will be the centralized meter reading. It had been correctly wired to the corresponding terminals on the panel.

[0006] Such a checking operation is sequentially performed for each water meter, and it is checked at the time of startup of the centralized meter reading board that there is no mistake in the connection of all the water meters.

[0007]

A connection error when an electric wire is connected to the terminal at the central meter reading end is likely to occur between adjacent water meters on the same floor. When the floors are different, it is easy to understand because of the wiring, but it is difficult to understand the neighbors on the same floor because the wires enter the meter reading board as a set.

By the way, as described above, even when trying to find a difference in connection, when the water meter is installed, almost all of the water meters indicate a value near Om ^3. There is almost no difference in the meter readings. For this reason, it was impossible to confirm whether or not there was a connection error by comparing the indicated value of each water meter with the value read by a centralized meter reader.

As described above, there is a problem that there is no proper method for checking whether each water meter is connected to the corresponding terminal at the stage when the water meter is first attached and connected to the centralized meter reading board. Was.

Accordingly, an object of the present invention is to provide a centralized meter reading system of a water meter which can solve such a problem.

[0011]

In order to attain the above object, the centralized meter reading system according to the first aspect of the present invention, only when a special operation is performed, changes the room number corresponding to the water meter connected to each terminal. A centralized meter reading board (20) having a function of transmitting a telegram including the telegram to each water meter; receiving the telegram and temporarily storing a room number included in the telegram; And a water meter having a function of temporarily displaying the room number stored by another operation.

According to the present invention, after all the water meters are connected to the corresponding terminals of the centralized meter reading board (20) and the connection is completed, a special operation is performed on the centralized meter reading board (20). Sends a message including the room number corresponding to each water meter from the terminal number and room number comparison table which is stored in advance through the terminal to which each water meter is connected.

The water meter that has received this message stores the room number in the message. Then, when another operation added to the water meter is received thereafter, the water meter temporarily displays the stored room number.

Therefore, the operator who has performed the another operation checks the room number temporarily displayed on the water meter, and if the room number matches the room number where the water meter is installed, the connection is established. It turns out that there is no mistake.

The centralized meter reading system according to the second aspect of the present invention has a centralized meter reading system having a function of transmitting a message including a room number corresponding to a water meter connected to each terminal to each water meter only when a special operation is performed. The meter reading board (20) and the electronic message are received, and the room number included in the electronic message is temporarily stored. Then, the stored room number is stored once by bringing the permanent magnet close to the water meter. And a water meter having a function of displaying only

According to the present invention, by bringing the permanent magnet close to the upper part of the water meter, the room number previously transmitted from the centralized meter reading board (20) and stored in the water meter is once changed to the water meter. Is displayed.

If the displayed room number matches the number of the room in which the water meter is installed, it is understood that there is no mistake in the connection. According to a third aspect of the present invention, in the centralized meter reading system according to the second aspect, a telegram including a corresponding room number is transmitted from the centralized meter reading board to each water meter, and the room number is stored in each water meter.
By bringing a permanent magnet close to the top of the water meter within a certain time, the stored room number is displayed only once, and thereafter, a water meter for displaying the amount of water used is provided. .

According to the present invention, the room number contained in the telegram sent from the centralized meter reading board (20) is stored in each water meter, and then the room is stored by bringing the permanent magnet close to the water meter within a predetermined time. Since the number is displayed only once, it can be confirmed from this display whether the connection is correct.

Further, it is preferable that after the operation of displaying the room number, the amount of water used is automatically displayed.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 (a) and 1 (b), reference numeral 20 denotes a centralized meter reading board having a plurality of sets of terminals 1, 2,... I have.

Reference numeral 100 denotes an apartment house, and a dwelling unit (room) 10
, 110, etc. Electronic water meter M _1, M ₂ of 8-bit mode, respectively in each dwelling unit (room), ..., M ₁₀ are installed, each dwelling unit (room) 10
, 110, electronic water meters M ₁ ,
Each of M ₂ ,..., M ₁₀ is a two-core electric wire (cable) 2
The terminals 1, 22, ..., 30 are connected to the terminals of the centralized meter reading board 20.

The electronic water meters M ₁ , M ₂ ,..., M ₁₀ installed in each dwelling unit (room) are connected and connected to the corresponding terminals 1, 2,. In the embodiment of FIG. 1A, the electronic water meter M ₂ of the dwelling unit (room) 102 is connected to and connected to the terminal 3 by an electric wire (cable) 22.

The electronic water meter M _{3 of} the dwelling unit (room) 103 is connected and connected to the terminal 2 by an electric wire (cable) 23. Thus, the dwelling unit (room) 102
The electronic water meters M ₂ and M ₃ installed in the terminals 103 and 103 are incorrectly connected by wires 22 and 23 to the terminals 2 and 3 that should be connected and connected, respectively, and are connected in an incorrect manner. .

The centralized meter reading board 20 is provided with a special check push-button switch S ₁ , for example, a hidden switch that can be operated only by an operator and that cannot be seen from the outside, in order to check for such a connection error at the time of startup. cage, pressing the push button switch S ₁ for this check to the rising time, the microprocessor incorporated in the concentrate metering plate 20, the terminals 1, 2, ..., electronic water of 8-bit type which is connected to the 10 A special message including the room number corresponding to the meter is transmitted.

Since the centralized meter reading board 20 has a terminal number and room number comparison table in advance, the room number corresponding to the terminal can be sent to the water meter via the terminal to which each water meter is connected.

Each of the water meters M ₁ , M ₂ ,..., M ₁₀ temporarily stores the room number sent from the centralized meter reading board 20 in this way. Electronic water meters M ₁ , M ₂ ,
..., M ₁₀ is because it is a built-in micro-processor, and stores the room number in the RAM.

[0027] In this way, after all, by pressing a check for a push button switch S ₁ of centralized meter reading panel 20, each of the terminals 1 and 2 of the centralized meter reading panel 20, ..., is the room number corresponding to the 10,
The electric water meters M ₁ , M ₃ ,..., M ₁₀ are transmitted via the electric wires 21, 23,..., 30 and stored and set in the RAM of each electronic water meter.

[0028] That is, centralized meter reading panel 20, pressing the push button switch S ₁ for checking at the rise time, executes a program microprocessor is predetermined, 8 bit system which are connected to the terminals The electronic message including the room number corresponding to the terminal number is transmitted to the electronic water meter. The room number sent in this way is
It is stored and set in RAM built in the electronic water meter.

From the terminal 1 of the centralized meter reading board 20, the electric wire 21
, A message including the room number [101] corresponding to the terminal number 1 is transmitted to the electronic water meter M _{1 of the} dwelling unit (room) 101.
And the room number [101] is stored in its RAM.
Is set.

[0030] Similarly, from the terminal 2, through wire 23, message containing the room number [102] corresponding to the terminal number 2 is sent to an electronic water meter M ₃ dwelling units (room) 103, room number [102 ] is an electronic water meters M ₃ R
Stored and set in AM.

Next, similarly, from the terminal 3, the electric wire 2
2, the room number corresponding to the terminal number 3 [103]
Electronic water meter M of dwelling unit (room) 102
Dispatched _2, room number [103] is stored and set in the electronic water meter M ₂ RAM.

Thus, the terminals 4,..., 10
, Through the wires 24,..., 30 in that order, the room numbers [104],.
10] is a dwelling unit (room) 104,.
110 electronic water meter M ₄ of ..., is transmitted to the M _10,
Each room number [104], ..., [110] is an electronic water meter M ₄ in each room, ..., are set and stored in the RAM of the M _10.

Thus, each electronic water meter M ₁ ,
Each room number set and stored in the RAMs of M ₂ ,..., M ₁₀ is set within a certain period of time after the room number is set and stored. A program of a microprocessor of the water meter is defined so that the readout and the temporary display on the display unit of the water meter are performed.

[0034] For example, when brought close to the permanent magnet 40 at the top of the electronic water meter M ₁ bidirectional communicable 8-bit system as shown in FIG. 1 (b), it is incorporated in an electronic water meter M ₁ Magnetically sensitive switch S ₂ such as reed switch
Is activated to start the microprocessor program, and the room number [101] previously transmitted from the centralized meter reading board 20 via the terminal 1 and the electric wire 21 and set and stored in the RAM is displayed on the liquid crystal display 50. To display temporarily.

[0035] This displayed room number [101], if the same as the number 101 of the room in which the electronic water meter M ₁ is actually installed, the terminal 1 through an electric wire 21, correctly corresponding that the water meter M ₁ that is connected so that could be confirmed.

Next, the electronic water meter M_TwoPermanent magnet on top
When the stone 40 is brought closer, the water meter M _TwoLCD display
Is the water meter M_TwoSet and stored
The room number [103] that has been set is displayed. Place
But this electronic water meter M_TwoIs shown in Fig. 1 (a).
In fact, since it is actually installed in the room 102,
Room number 102 and electronic water meter M_TwoDisplayed on
Because the room number [103] is different,
Water meter M_TwoIs correctly connected to the corresponding terminal 2.
You can immediately confirm that it has not been done.

[0037] In the same manner, close to the permanent magnets on the top of the electronic water meter M _3, the room number [102] which is set and stored in the internal RAM is displayed on the liquid crystal display, the number of real rooms 103 since it is staggered with, the electronic water meters M ₃ also correctly, it can be confirmed that it is not connected to the corresponding terminal.

[0038] In this way, in turn, electronic water meters M _4, ..., close the permanent magnets each of the M _10, setting and
The stored room numbers [104],... [110] are temporarily displayed on the liquid crystal display to confirm whether or not the numbers match the numbers of the rooms 104,. By doing so, each electronic water meter M ₄ ,
..., M ₁₀ and each terminal 4, ..., it can be confirmed whether or not the connection is being performed correctly between the 10.

The electronic water meters M ₁ , M ₂ ,...
M _10, when checking as described above, temporarily during the predetermined period of time once the liquid crystal display room number [10
1], [103],..., [110], and thereafter, the program of the microprocessor of the water meter is set so as to return to the predetermined display such as the water usage amount or the instantaneous flow rate as usual. is there.

In FIG. 1A, the centralized meter reading board 20 has ten terminals 1, 2,...
Although only 10 rooms 101, 102,..., 110 are shown in the figure, actually 10 units (10 rooms) on each floor are shown.
In the case of a 10-story apartment house, an electronic water meter of an 8-bit system is installed in each of 100 rooms in total, and each is connected to a corresponding 100 terminals of the centralized meter reading board 20 in total. It is.

As described above, the electronic water meter M ₂
Of the room number [103]
Is displayed, the electric wire 22 connected to the terminal 3 is switched to the terminal 2, and similarly, the electric wire 23 connected to the terminal 2 is replaced to the terminal 3, thereby changing to a normal connection. be able to.

The use of the 8-bit electronic water meter capable of bidirectional communication as described above is suitable for the centralized meter reading system.

[0043]

Since the centralized meter reading system of the water meter according to the present invention is constructed as described above, after all the water meters have been mounted and connected, it is confirmed that the meter reading can be read. The check operation sends the room number corresponding to the terminal number from the meter reading board to each water meter, sets and stores it in the water meter, and then displays this on each water meter to verify it with the actual room number. Then, whether the connection is good or not can be easily checked by checking whether the connection is correct.

According to the second aspect of the invention, by bringing the permanent magnet close to the water meter, the room number set and stored in the water meter can be switched and displayed from the centralized meter reading board. Claim 3
In the invention of the above, the room number set by sending from the centralized meter reading board to each water meter is displayed only once by bringing a permanent magnet close to the upper part of the water meter within a certain time, and then automatically using water. Since the amount is displayed, the checking operation can be easily performed, and no special return operation is required after the checking operation.

[Brief description of the drawings]

FIG. 1A is a schematic diagram illustrating a connection according to an embodiment of the present invention, and FIG. 1B is a perspective view of an 8-bit electronic water meter used in the present invention.

[Explanation of symbols]

1, 2, 3, 4, ..., 10 terminals 20 Centralized meter reading board 21, 22, 23, 24, ..., 30 Electric wire (cord) 40 Permanent magnet 50 Liquid crystal display 100 Apartment 101, 102, 103, 104, ... , 110 dwelling unit _{(room) M 1, M 2, M} 3, M 4, electronic water meter S ₁ of M ₁₀ 8-bit system, S ₂ switch

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G08C 15/00 G08C 25/00

Claims (3)

(57) [Claims] 1. A centralized meter reading board (20) having a function of transmitting a telegram including a room number corresponding to a water meter connected to each terminal to each water meter only when a special operation is performed; A water meter having a function of receiving a telegram, temporarily storing a room number included in the telegram, and temporarily displaying a room number stored by another operation added to the water meter thereafter. And a centralized meter reading system for a water meter. 2. A centralized meter reading board (20) having a function of sending a telegram including a room number corresponding to a water meter connected to each terminal to each water meter only when a special operation is performed; A water meter having a function of receiving a telegram, temporarily storing a room number included in the telegram, and then displaying the stored room number only once by bringing a permanent magnet close to the water meter. And a centralized meter reading system for a water meter. 3. A telegram including a corresponding room number is sent from the centralized meter reading board to each water meter, and after storing the room number in each water meter, a permanent magnet is placed on the upper part of the water meter within a predetermined time. 3. The centralized meter reading system for a water meter according to claim 2, further comprising a water meter for displaying the stored room number only once by approaching, and thereafter displaying the amount of water used.