KR19990037064A - Method and transmitter of weighing value of digital meter - Google Patents

Abstract

The disclosed transmission method and transmission device accurately reads the measured value and transmits it to the data communication through the communication line even when the power is not supplied for a long time due to a power failure to the digital meter which measures the usage amount of water, gas and electricity. To collect the meter reading.

The present invention includes a plurality of weighing value transmitters and a main system, and a plurality of weighing value transmitters includes an absolute value encoder for outputting the value of the weighing counter as it is to a weighing counter for measuring the amount of use of the meter. The encoder is provided with a rotary contact portion on the rotation display portion that displays the value of the weighing counter, respectively, to rotate together with the rotation of the rotation display portion, and an encoder substrate having a predetermined pattern formed on the outer side of the rotation contact portion. While contacting the pattern of, it outputs the same value as the value of the weighing counter.The auxiliary microcomputer collects and outputs the weighing value outputted by the absolute value encoder at unit time intervals, and the main microcomputer receives and stores it. The computer stores the stored system when a command to transfer weighing values is received via the communication unit. The value is transmitted through the communication unit, and the main system sends a transmission command to sequentially transmit the weighing value to the plurality of weighing value transmitters, and prints the weighing value transmitted by the weighing value transmitter according to the transfer command according to the save and print command. do.

Description

Method and transmitter of weighing value of digital meter

The present invention relates to a method and apparatus for transmitting a weighing value of a digital meter to accurately read metering values using tap water, gas, electricity, and the like, and to accurately collect data over a long distance.

In general, water, gas, and electricity projects are public administration information and have a specific administration, and therefore, citizens need to provide better administrative services.

Therefore, in recent years, much investment and effort have been made to on-line and digitize the use of these tap water, gas and electricity.

These tap water, gas and electricity are required to pay the usage fee according to the amount of use, and must be accurately read.

Since the water meter has a fear of freezing during the winter, a manhole is usually provided in the ground, and the water meter is installed in the manhole after warming the manhole.

Therefore, in order to read the usage of the water supply, the meter reader visits one by one and opens the manhole cover to check the display value of the metering counter, which requires a lot of metering personnel and also gives a lot of inconvenience and hassle to the meter reader.

In particular, apartments and buildings are provided with manholes in corners or dark basements. The risk of occurrence is very high.

In addition, since the metering value of the water supply meter is generally installed in a dark place as described above, and the gas and electric metering unit are installed in a high place, when the metering meter is read, the meter reads the value of the metering counter incorrectly and is economical to the consumer. Disadvantages often occur.

Accordingly, an object of the present invention is to provide a method of transmitting and transmitting a weighing value of a digital meter which can accurately read the weighing value and collect it by communication without directly looking at the weighing counter of the tap water, electricity and gas meter. .

According to the method for transmitting and transmitting a weighing value of a digital meter of the present invention for achieving the above object, a weighing value transmitter and a main system are provided.

The weighing value transmitting unit includes an absolute value encoder that outputs the value of the weighing counter as it is to a weighing counter for measuring the usage amount of the meter.

The absolute encoder is provided with a rotary contact on a rotation display unit that displays '0 to 9' of the weighing counter, respectively, so as to rotate together with the rotation of the rotation display unit, and an encoder substrate having a predetermined pattern formed outside the rotation contact. The rotary contact contacts the pattern of the encoder substrate and outputs a value of '0 to 9' equal to the value of the weighing counter.

The auxiliary microcomputer collects and outputs the weighing value outputted by the absolute value encoder at unit time intervals, and the main microcomputer receives and stores the measured value. The main microcomputer includes a communication unit to provide a command for transmitting the weighing value through the communication unit. When received, the stored weighing value is transmitted through the communication unit.

The main system checks the unique number of the digital meter stored in advance when the collection of the weighing value is ordered according to the operation of the meter reader, and transmits it to the weighing value transmission unit one by one with a transmission command. Receive and store the weighing value to be transmitted by data communication and print it according to the print command.

1 is a view schematically showing an embodiment in which the transmission device of the present invention is applied to a water meter,

2 is a view showing an absolute value encoder according to the transmission apparatus of the present invention.

Figure 2a is a view showing a rotary contact installed in the weighing display,

Figure 2b is a view showing an encoder substrate in which the rotating contact is in contact with the pattern,

3 is a view showing the configuration of a weighing value transmitter in the transmitter of the present invention;

4 is a view showing the configuration of a main system in the transmission apparatus of the present invention;

5 is a signal flow diagram illustrating an operation of a weighing value transmitter according to a transmission method of the present invention;

6 is a signal flowchart showing the operation of the main system according to the transmission method of the present invention.

* Explanation of symbols for main parts of the drawings

14 Weighing Counters 14A, 14B, 14C, 14D: Rotation Display

15, 16, 17, 18: absolute value encoder 15A, 16A, 17A, 18A: rotary contact

15B, 16B, 17B, 18B: Encoder Board 20: Auxiliary Microcomputer

21: main microcomputer 22, 31: communication unit

30: collection microcomputer 32: memory

33: key input unit 34: display unit

35: printer

Hereinafter, the digital meter of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing an embodiment in which the digital meter of the present invention is applied to a water meter.

Here, reference numeral 10 denotes a main body of the water meter, which is provided with an inlet pipe 11 and an outlet pipe 12 through which the tap water flows in and out of the lower part of the main body 10, and a rotating member rotated according to the usage amount of the tap water. (13) is provided.

And the upper part of the main body 10 is provided with a metering counter 14 for counting the amount of use according to the rotation of the rotating member (13).

The weighing counter 14 includes a plurality of rotation display units 14A, 14B, 14C, and 14D on which an outer surface is marked with '0 to 9', and the rotation display units 14A, 14B, and 14C. On one side of 14D, absolute value encoders 15, 16, 17 and 18 are provided.

Here, the rotation display units 14A, 14B, 14C, and 14D respectively display the weighing values in units of units, units of tens, units of hundreds, and units of thousands, and each of the units of rotation displays 14A, 14B, 14C, and 14D. ) Rotates at a rate of 1/10.

That is, when the rotation display unit 14A rotates one rotation, the rotation display unit 14B rotates one tenth, and when the rotation display unit 14B rotates one rotation, the rotation display unit 14C rotates one tenth. When 14C rotates one rotation, the rotation display unit 14D rotates 1/10 to display the weighing value.

The absolute value encoders 15, 16, 17 and 18 are rotated contacts 15A, 16A and 17A at rotation indicators 14A, 14B, 14C and 14D as shown in FIG. 2A. 18A is provided to rotate together with the rotation of the rotation display portions 14A, 14B, 14C, and 14D, and a predetermined pattern outside the rotation contacts 15A, 16A, 17A, and 18A. The formed encoder substrates 15B, 16B, 17B, and 18B are fixed so that the rotational contacts 15A, 16A, 17A, and 18A form the patterns of the encoder substrates 15B, 16B, 17B, and 18B. The encoder substrates 15B, 16B, 17B, and 18B are respectively contacted to the values of the rotation display units 14A, 14B, 14C, and 14D, that is, the digital signals of '0 to 9', '0000 to'. Output 1001 '.

3 is a circuit diagram showing the configuration of the weighing value transmitter in the meter reading apparatus of the present invention.

Here, reference numeral 20 denotes that the measured values output by the encoder substrates 15B, 16B, 17B, and 18B of the absolute value encoders 15, 16, 17, and 18 are collected and output at unit time intervals. An auxiliary microcomputer, 21 denotes a main microcomputer that inputs the weighing value output by the auxiliary microcomputer 20 to control storage and transmission.

Reference numeral 22 is a communication unit which receives a transmission command, inputs it to the main microcomputer 21, and transmits a weighing value under the control of the main microcomputer 21.

The communication unit 22 is connected to the communication unit 31 of the main system to be described later through a communication line such as a conventional telephone line and a cable television line or a separate line to perform data communication.

4 is a view showing the configuration of the main system for collecting the metered value transmitted by performing data communication with the metered value transmitter in the meter reading apparatus of the present invention.

Here, reference numeral 30 denotes a collection microcomputer which controls data collection by performing data communication, and reference numeral 31 denotes a communication unit which performs data communication with the measurement value transmission unit under the control of the collection microcomputer 30. to be.

Reference numeral 32 is a memory for storing the unique numbers of the plurality of weighing value transmitters in advance, and storing and outputting the collected weighing values under the control of the collection microcomputer 30, and the numeral 33 is an operation according to the operation of the meter reader. It is a key input unit for inputting a command to the collecting microcomputer 30.

Reference numeral 34 is a display unit for displaying a key input signal and collected weighing values and the like under the control of the collecting microcomputer 30, and reference numeral 35 denotes a printing unit for printing the weighing values under the control of the collecting microcomputer 30. It is a printer.

According to the present invention configured as described above, the tap water flows into the inlet port 11 and flows out of the outlet port 12 according to the use of tap water, and the rotating member 13 installed in the main body 10 rotates and the rotation member 13 rotates. Accordingly, the plurality of rotation display portions 14A, 14B, 14C, and 14D of the weighing counter 14 rotate.

As the plurality of rotation display portions 14A, 14B, 14C, and 14D rotate, the rotary contacts 15A, 16A, 17A, 18A rotate, and the encoder substrates 15B, 16B, 17B ( 18B), the encoder substrates 15B, 16B, 17B, and 18B are digital values '0000 to 1001', respectively, according to the rotation angles of the rotational contacts 15A, 16A, 17A, and 18A. Will print

That is, the encoder boards 15B, 16B, 17B, and 18B respectively output the same values as the display values of the rotation display units 14A, 14B, 14C, and 14D as digital values.

In this state, the auxiliary microcomputer 20 collects the digital values output by the encoder substrates 15B, 16B, 17B, and 18B at unit time intervals, for example, at intervals of 1 to 5 sec. Output to the main microcomputer 21.

As shown in FIG. 5, the main microcomputer 21 performs an initialization operation in step S10 and determines whether data is received from the main system through the communication unit 22 in step S11. If not, as described above, the auxiliary microcomputer 20 inputs and stores the weighing value output in unit time intervals in step S12.

On the other hand, the main system performs an initialization operation in step S21, as shown in Figure 6, the meter reader operates the key input unit 34 to collect the weighing value in step S22 is the command to collect the weighing value When input, the collecting microcomputer 30 confirms the unique numbers respectively assigned to the plurality of weighing value transmitters stored in the memory 32 in step S23.

When the plurality of unique numbers stored in the memory 32 are confirmed in the step S23, the collecting microcomputer 30 transmits the predetermined data according to the first unique number in the step S24 by the communication unit 31. Send it through.

For example, the collection microcomputer 30 transmits the read-in pulse signal, the unique number, the error correction code, and the read-out pulse signal through the communication unit 31 in sequence as the transmission includes the unique number as a transmission command. Send it to the value transmitter.

In this way, the predetermined transmission command transmitted by the collection microcomputer 30 of the main system through the communication unit 31 is received by the communication unit 22 of the weighing value transmission unit and input to the main microcomputer 21. 21 confirms reception of the data in step S11 and reads the data received in step S13 as shown in FIG.

If the unique number transmitted in the read result step S14 of the received data does not match with its own unique number, the received data is ignored and repeated from the step S11.

When the unique number transmitted in step S14 matches the unique number assigned to the self, the main microcomputer 21 outputs the measured value stored in step S15 to the communication unit 22 and transmits it.

For example, the main microcomputer 21 sequentially transmits a read in pulse signal, a unique number, a weighing value, an error correction code, and a read out pulse signal to the main system through the communication unit 22.

As described above, the predetermined data transmitted by the weighing value transmitter is received by the communication unit 31 of the main system and input to the collecting microcomputer 30, and the collecting microcomputer 30 is described above with reference to FIG. After transmitting the data according to the unique number in the step (S24) to the transfer command and in the next step (S25) it is checked whether the data is received from the weighing value transmission unit.

When data is not received from the weighing value transmitter in step S25, the collecting microcomputer 30 checks whether a predetermined time set in step S26 has elapsed, and even if the set time has elapsed, weighing value. When data is not received from the transmission unit, it is determined whether the data according to the corresponding unique number is transmitted more than the number of times set in step S27 as the transmission command.

When the data according to the corresponding unique number is not transmitted as the transmission command more than the set number of times in the step S27, the collection microcomputer 30 returns to the step S24 to transfer the data according to the corresponding unique number to the transmission command. After transmitting again, the operation of determining whether or not predetermined data is received from the weighing value transmitter in step S25 is repeated.

In addition, if the predetermined data is not received from the weighing value transmitter even when data corresponding to the unique number is transmitted over a set number of times, the collection microcomputer 30 determines that the weighing value transmitter corresponding to the unique number is out of power. It is determined that an error due to the error occurs, and after checking the next unique number in step S28, the process returns to step S24 to repeat the operation of transmitting data according to the next unique number as a transfer command.

When predetermined data is received from the metered value transmission unit through the communication unit 31 in step S25, the collecting microcomputer 30 transmits the unique number of the data received in step S29 immediately before. If it does not match by judging whether or not the unique number is matched, the received data is disregarded as an error occurs, and after checking the next unique number in step S28, the process returns to step S24 and the data according to the next unique number. Repeat the operation of sending the command to the transfer command.

When the unique number of the data received in step S29 and the unique number transmitted immediately before match, the collecting microcomputer 30 stores the unique number and weighing value of the weighing value transmitter received in step S30. (32), the stored weighing value is displayed on the display unit 34 so that the reader can confirm.

In the next step (S31) to perform all data communication with the weighing value transmission unit according to the full unique number stored in the memory 32 to determine whether the collection of the weighing value is completed, and if the collection of the weighing value is not completed After confirming the next unique number in step S28, the process returns to step S24 to repeat the operation of transmitting data according to the next unique number as a transfer command.

When the collection of the weighing value is completed by performing data communication with the weighing value transmitter according to the full unique number stored in the memory 32 in the step S31, the collecting microcomputer 30 performs the step S32. Determines whether a print command is input from the key input unit 33, and when the print command is input, performs a data communication as described above, and stores the measured values of the plurality of weighing value transmitters stored in the memory 32 in the printer ( 35) Print it out.

On the other hand, the above has been described taking an example of collecting the metered value of the water meter.

In carrying out the present invention, the present invention is not limited thereto, and may be installed in various meters such as electricity and gas to collect metered values.

In the above example, the four counters 14A, 14B, 14C and 14D are provided in the weighing counter 14, and four absolute value encoders 15, 16, 17 and 18 are provided. Although it demonstrated, the number of these rotation display parts 14A, 14B, 14C, 14D, and the absolute value encoder 15, 16, 17, 18 can be added and decreased as needed.

As described above, according to the present invention, the usage of water, electricity, and gas is collected by performing data communication through a line, so that the meter reader does not need to read the metered value one by one, thereby reducing the manpower of reading and reading the metered value. In addition to being very simple, the reading error of the meter reader can be eliminated and the meter can be read accurately.

Claims (9)

A first step of determining whether a unique number for collecting a weighing value is received through a communication line; A second step of determining whether the unique number is a unique number assigned to the first number when a unique number for collecting the weighing value is received in the first step; A third step of inputting and storing a weighing value at unit time intervals when a unique number is not received in the first step or a unique number received in the second step is not a unique number assigned to the second step; And When the unique number received in the second process is a unique number assigned to the second process, it is controlled by the fourth process of transmitting the measured value stored in the third process through a communication line. Way. An eleventh step of identifying unique numbers of a plurality of weighing value transmitters to collect weighing values when there is a command to collect weighing values; A twelfth step of transmitting the data including the unique number identified in the eleventh step as a transmission command through a communication line and determining whether the measured value is received through the communication line from the measured value transmitter of the corresponding unique number; In the twelfth step, when the weighing value is received from the weighing value transmitter of the corresponding unique number through the communication line, the received weighing value is stored and the weighing value is transferred from the weighing value transmitter of the all unique numbers identified in the eleventh step. A thirteenth process of determining whether all have been collected; And When all the weighed values are not collected from the weighed value transmitter of the entire unique number in the thirteenth process, after confirming the next unique number, the data including the next unique number in the twelfth process is used as a transmission command. Method of transmitting a weighing value of a digital meter, characterized in that controlled by the fourteenth process to repeat from the operation to transmit. The method of claim 2, A method of transmitting a weighing value of a digital meter, comprising the step of printing all the weighing values collected when all weighing values are collected from a weighing value transmitter of all unique numbers and there is a print command. The method of claim 2, wherein the twelfth process comprises: A method of transmitting a weighing value of a digital meter, which sets a number of times to communicate in advance and repeatedly transmits a transmission command according to a unique number when the weighing value is not received from the corresponding weighing value transmitter. A plurality of absolute value encoders installed in the plurality of rotation display units of the weighing counter provided in the meter main body and outputting absolute values of the weighing counter; A weighing value transmitter configured to store and transmit values of the plurality of absolute value encoders; And Weighing value transmitter of the digital meter, characterized in that the main system is connected to the weighing value transmitter and the communication line to perform a data communication command to the weighing value transmission to the weighing value transmitter and to collect the transmitted weighing value. 6. The method of claim 5, wherein the absolute value encoder is; A plurality of rotation contacts respectively provided on the plurality of rotation display units and rotated together according to the rotation of the rotation display unit; And A plurality of encoder substrates formed with a predetermined pattern and fixed to the outer side of the plurality of rotation contacts, respectively, and digitally outputting display values of the rotation display unit as the rotation contact contacts the predetermined pattern. Weighing value remote meter. The apparatus of claim 5, wherein the weighing value transmitting unit; An auxiliary microcomputer for storing and outputting values of the plurality of absolute value encoders; A main microcomputer for controlling transmission by inputting a weighing value collected by the submicrocomputer; A digital meter, comprising: a communication unit connected to the main system by a communication line, receiving and transmitting a transmission command transmitted from the main system to the main microcomputer, and transmitting a weighing value output from the main microcomputer to the main system. Meter reading value remote reading device. The system of claim 5, wherein the main system; A collection microcomputer for performing data communication with the plurality of weighing value transmitters to control collection of weighing values; A communication unit connected to the weighing value transmitter by a communication line and transmitting a transmission command to the weighing value transmitter according to the control of the collecting microcomputer, and receiving the weighing value transmitted by the weighing value transmitter and inputting the measured value to the collecting microcomputer; A memory for storing in advance the unique numbers of a plurality of corresponding weighing value transmitters, and storing and outputting the weighing values collected under the control of the collecting microcomputer; A key input unit for inputting an operation command according to an operation of a meter reader to the collection microcomputer; And And a display unit for displaying a key input signal and collected weighing values according to the control of the collecting microcomputer. 9. The system of claim 8, wherein the main system; And a printer for printing the collected weighing value according to the control of the collecting microcomputer.