KR200439399Y1 - Digital gas meter capable of wireless checking - Google Patents

Abstract

The present invention relates to a gas meter and a gas meter wireless meter reading system for measuring the gas usage, and more specifically, it is possible to obtain the measurement data by communicating with the gas meter through wireless communication, the amount of the measured amount by a certain time unit The present invention relates to a gas meter and a gas meter wireless metering system equipped with a correction means for minimizing the use space of the memory by recording only the memory in the memory and correcting a measurement error according to temperature and pressure.

The gas meter of the present invention is provided with a gas inlet and outlet so that the gas inlet and outlet are connected to the external gas inlet and outlet by a connector, and outputs a pulse by a magnet installed on the rotating plate to measure the flow of gas. A gas meter comprising a reed switch, a meter reading unit for receiving a pulse output from the reed switch and calculating a gas flow rate, and a memory for recording measurement data calculated by the meter reading unit, wherein the memory has a set time period. It is characterized in that only the usage amount per unit is recorded.

Gas Meter, Unit Usage, Wireless, Temperature Compensation

Description

DIGITAL GAS METER CAPABLE OF WIRELESS CHECKING}

1 is a block diagram for explaining the configuration of a gas meter of a first embodiment of the present invention;

2 is a flowchart for explaining the operation of the gas meter of the first embodiment of the present invention;

3 is a flow chart for explaining the operation of the control unit of the gas meter of the first embodiment of the present invention

Figure 4 is an exploded side view of the gas meter body and the wireless communication module of the first embodiment of the present invention

5 is a perspective view of a gas meter body and a wireless communication module of the first embodiment of the present invention;

6 is a plan view and a side view of a wireless communication module of a gas meter of a second embodiment of the present invention;

7 is a front view of the gas meter main body of the second embodiment of the present invention;

8 is a block diagram for explaining the configuration of a wireless communication module of a second embodiment of the present invention;

<Description of the symbols for the main parts of the drawings>

10 control unit 20 sensor unit

30 gas flow pipe 40 meter

50 Reed Switch 60 RF Communication Module

100 Wireless communication module case 111 Sensor housing guide

112 Coupling protrusion 115 Sensor housing

130 body 133 magnets

134 Sensor accommodation slot 135 Sensor guide

135 Insertion Groove

The present invention relates to a gas meter for measuring gas usage. More specifically, the present invention relates to a gas meter capable of transmitting a usage amount of the gas meter by wireless communication. The present invention also relates to a gas meter equipped with a correction means for minimizing the use space of the memory by recording only the amount of gas used in the memory for a predetermined time unit and correcting a measurement error according to temperature and pressure.

As the supply of city gas is paid according to the amount of usage, the diaphragm type gas meter for measuring the gas consumption is installed outside the home or apartment. The diaphragm type gas meter has a pair of membranes (diaphragms) installed therein, and the gas is supplied by the pumping action of the diaphragm. At this time, the amount of gas supplied is measured and displayed using a gear mechanism associated with the diaphragm.

The diaphragm type gas meter is a typical example of a gas meter, which is light in weight and low in volume, and thus is widely used for home or business use. The diaphragm flows back and forth by the pressure difference between the front and back surfaces, and the mechanical usage is continuously displayed by the flow mechanism and the valve so that the actual usage appears on the display unit.

Since the conventional gas meter as described above should record the accumulated value of the measurement data every unit time, there must be enough space in the memory for storing the measurement data. Therefore, a large capacity memory must be provided, which causes a cost increase.

In addition, the conventional gas meter has been difficult to measure the exact gas consumption because it is mainly installed in the outdoor temperature change. In other words, when the temperature rises, the volume expands and when the temperature decreases, the volume decreases.As a diaphragm type gas meter measures the amount of gas that passes through a certain space formed by the diaphragm, it cannot compensate for the change in the amount of gas. An error occurs at. These errors are caused not only by temperature but also by pressure fluctuations, causing a lot of errors in gas measurement.

In addition, in order to bill the user by using the measurement data recorded in the memory, a separate connector or the like is directly connected to the gas meter, so that the meter has to be moved to the place where the gas meter is installed. .

The present invention is designed to solve the above problems, and the first object is to provide a gas meter to minimize the storage space of the memory by storing only the amount of the measured data measured in a certain time unit.

In addition, a second object of the present invention is to provide a gas meter equipped with a on-pressure correcting means for compensating the flow rate of the gas according to the temperature and pressure of the gas flowing into the diaphragm type gas meter to measure the exact gas consumption.

In addition, a third purpose of providing a wireless meter reading system of the gas meter including a wireless communication module for transmitting the measurement data to the mobile meter reading device by communicating with the external mobile meter reading device in a wireless communication for the meter reading of the gas meter. have.

Gas meter according to one aspect of the present invention, the gas inlet and outlet is provided with the gas inlet and outlet is connected to the external gas inlet and outlet by a connector, the magnet installed on the rotating plate to measure the flow rate of gas In the gas meter including a reed switch for outputting a pulse, a meter reading unit for receiving the pulse output from the reed switch to calculate the flow rate of the gas, and a memory for recording the measurement data calculated by the meter reading unit, Only the usage amount of each set time unit is recorded in the memory.

In addition, the gas meter of the present invention is provided with a temperature sensor for measuring the temperature of the gas passing through the outlet side connector, a pressure sensor for measuring the pressure, from the signal input from the temperature sensor and the pressure sensor A control unit for calculating temperature data and pressure data, receiving a flow rate calculation value output from the meter reading unit, performing correction according to temperature and pressure, and outputting a control signal for displaying the result, and a control signal from the control unit It characterized in that it comprises a display unit for receiving the input to display the corrected measured value.

In addition, the gas meter of the present invention is characterized in that it further comprises an external interface for communication with the outside.

On the other hand, the wireless meter reading system of the gas meter of the present invention is a detachably installed gas meter and the gas meter described above, the wireless communication module for wirelessly transmitting the measurement data of the memory is electrically connected to the external interface Characterized in that it comprises a.

Gas meter according to another aspect of the present invention, the gas meter having a gas inlet and outlet, the gas meter display means using a mechanical rotary wheel provided on the front and a permanent magnet installed on the rotary wheel of the main body of the gas meter A main body, a magnetic sensor for detecting the rotation of the permanent magnet, a timer, a memory, a wireless communication module, and the output of the magnetic sensor are received and the gas consumption is calculated and stored in the memory. It is characterized in that it comprises a wireless communication module having a control unit for reading the gas consumption information stored in the memory and transmitting to the external wireless communication module through the wireless communication module, detachably attached to the gas meter body.

Gas meter according to the present invention can be installed permanent magnet in the last digit rotation wheel of the conventional mechanical gas meter, count the rotation of the permanent magnet to measure the amount of gas used, it can be transmitted to the outside wirelessly Will be. The gas user confirms the amount of usage by the display means installed in the meter body, and the gas supplier can wirelessly receive the gas consumption to reduce manpower for meter reading.

In addition, the gas meter of the present invention facilitates the attachment and detachment of the main body and the wireless communication module, and in order to ensure the input of the magnetic sensor, the display means of the gas meter main body is partially removed from the lower part of the rotary wheel provided with the permanent magnet. By forming a sensor receiving portion receiving groove, the case of the wireless communication module to form a sensor receiving portion protruding to be inserted into the sensor receiving portion receiving groove of the main body, the magnetic sensor is installed inside the sensor receiving portion of the case It is desirable to. In addition, it is more preferable that a coupling protrusion is formed on a rear surface of the gas meter main body to facilitate attachment and detachment of the wireless communication module, and a coupling protrusion insertion groove is formed on the front surface of the gas meter main body. . In addition, in order to more accurately measure the amount of use caused by the temperature change, the outlet connector of the main body is further provided with a temperature sensor for measuring the temperature of the gas passing through, and a pressure sensor for measuring the pressure, the control unit Calculates temperature data and pressure data from signals input from the temperature sensor and the pressure sensor, receives the output of the magnetic sensor, performs correction according to temperature and pressure on the calculated gas consumption, and stores the result in the memory. It is desirable to.

Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings 1 to 5.

1 is a block diagram for explaining the operation of the gas meter according to an embodiment of the present invention, Figure 2 is a flow chart showing the operation of the gas meter according to an embodiment of the present invention, Figure 3 is one of the present invention 4 is an exploded side view of a main body of a gas meter and a wireless communication module according to an embodiment of the present invention, and FIG. 5 is a gas according to an embodiment of the present invention. A perspective view of the main body of the meter and a wireless communication module.

First, the operation of the gas meter of the present embodiment will be described with reference to FIGS. 1 to 3. The gas meter 100 of this embodiment measures the gas flow rate using a diaphragm is the same mechanical mechanism as the conventional gas meter.

The gas meter 100 of the present embodiment is installed adjacent to a rotating plate (not shown) provided with a magnet (not shown) of the metering mechanism 40, and the reed switch when the rotating plate rotates due to the flow of the gas to approach the magnet. Reference numeral 50 denotes a pulse signal, and the control unit 10 calculates the gas usage amount by the number of the pulse signals. At this time, the control unit 10 reads the detected values of the temperature sensor 21 and the pressure sensor 22 of the sensor unit 20 installed in the gas inlet pipe 30 to correct the amount of use according to the temperature / pressure to correct the amount of use. The control signal is outputted so as to be displayed on the LCD window 11 so that the user can recognize it, and recorded in the memory 12.

The method of recording in the memory 12 is to record only the amount of usage for one hour at predetermined time intervals, for example, at one hour intervals.

Referring to Table 1, the comparison with the conventional cumulative recording method is as follows.

TABLE 1

time Cumulative recording method Usage recording method per unit time 1 hours 0 0 2 hours 000.80 0.80 3 hours 004.20 3.40 4 hours 011.20 7.00 n hours XXXX.XX X.XX

Referring to Table 1, the cumulative recording method as in the prior art continuously accumulates the usage, and increases after a long period of time by thousand units and ten thousand units to occupy a large amount of storage space of the memory 12. Since the recording method records only the usage per unit time, as long as there is no unusual situation as shown in Table 1, it records up to one unit or up to ten units, and thus longer intervals with less memory storage space than the cumulative recording method. It is possible to record the gas consumption of the.

The process of recording the memory 12 of the measurement data of the controller 10 will be described with reference to FIG. 3.

The control unit 10 reads the last recorded value of the memory 12 at the same time as the measurement start (S21). Thereafter, the measured value calculated by the on-pressure correction is compared with the final recorded value (S23) and when the measured value is greater than or equal to the final recorded value of the memory, a control signal for storing the amount of usage per unit time, that is, the measured value in the memory 12. To output (S24). Thereafter, it is determined whether the preset unit time has elapsed (S25), and when it returns, the process returns to step S21 to repeat the recording operation.

As described above, the data stored in the memory 12 is moved in order to be processed by the separate device from the outside to be billed data, the data of the memory 12 through the external interface 70 of the gas meter 100 Is moved to an external device. The external interface 70 may be provided as a terminal for communication with an external device in a serial or parallel communication method such as RS-232C.

On the other hand, a wireless communication module 60 for reading the measurement data of the gas meter 100 as described above is detachably installed at a predetermined position outside the gas meter 100, as shown in Figs. .

The wireless communication module 60 is compatible with the conventional digital gas meter 100, is electrically connected to the external interface 70, and is detachably installed on the outer surface of the gas meter 100. At this time, the connection portion with the external interface 70 is sealed by a separate sealing means so that the measurement data of the gas meter 100 cannot be accessed through the external interface 70 except for the applicator.

Accordingly, the gas meter 100 is easily and simply read by externally accessing the gas meter 100 of the present embodiment wirelessly with a mobile device such as a PDA and a wireless meter terminal, and loading data recorded in the memory 12. can do.

As another embodiment, in the case of a multi-family housing complex such as a residential area or apartment in which houses are densely packed, the gas meter 100 in which the wireless communication module 60 is installed is installed in each house, thereby communicating the wireless communication module 60. A meter reading server may be provided within a category so that meter reading data is automatically recorded on the meter reading server at a set time. When processing data for billing, it is possible to bill gas consumption for a plurality of houses by loading a plurality of meter data recorded in the meter reading server at once.

Hereinafter, a second embodiment of a gas meter according to the present invention will be described with reference to FIGS. 6 to 8.

6 is a plan view and a side view of a wireless communication module of the gas meter of the second embodiment of the present invention, FIG. 7 is a front view of the gas meter body of the second embodiment of the present invention, and FIG. 8 is a radio of the second embodiment of the present invention. This is a block diagram for explaining the configuration of the communication module.

6 and 8, a magnetic sensor 121, a controller 124, a memory 125, and a timer 27 are installed in the wireless communication module case 110. In addition, the case 110 has a built-in RF module 126 for transmitting the gas metering value stored in the memory 125 to the outside. Referring to FIG. 6, in this embodiment, in particular, the magnetic sensor 121 has a sensor accommodating part 115 formed to protrude from the upper portion of the case 110, and a magnetic sensor ( 121 is disposed. The magnetic sensor 121 may be any sensor that can detect the movement of the rotating wheel by magnetic force such as a hall sensor or a reed switch. In addition, the engaging projection 112 is formed on the surface facing the main body of the case 110 of the wireless communication module.

Referring to FIG. 7, an inlet port and an outlet port 131 are formed at an upper side of the gas meter main body 130, and a display means 140 for gas usage is provided at the front side. The display means 140 is provided with a plurality of rotating wheels installed to rotate by the movement of the diaphragm. Permanent magnets 133 are installed on the rightmost rotating wheel 132 of the rotating wheel to rotate together with the rotating wheel. In addition, in the gas meter body 130 of the present embodiment, the sensor accommodating part 115 of the wireless communication module case 110 is inserted into the lower portion of the rotating wheel 132 on which the permanent magnet 133 of the display means 140 is installed. The sensor accommodating part accommodating groove 134 is formed. In addition, a guide 135 is formed on the inner surface of the sensor accommodating groove 134 to guide the insertion position when the sensor accommodating part 115 of the wireless communication module is inserted. In addition, a guide groove 111 for guiding when inserted into the sensor accommodating part accommodating groove 134 is formed at an outer surface of the sensor accommodating part 115 of the wireless communication module case 110. In addition, a coupling protrusion insertion groove 136 for inserting the coupling protrusion 112 formed on the rear surface of the wireless communication module case 110 is formed on the front surface of the main body 130. In addition, although not shown, the temperature sensor 122 for measuring the temperature of the gas passing through the outlet 131 side connector of the gas flow meter main body 130, and the pressure sensor 123 for measuring the pressure is provided.

Hereinafter, the operation of the gas meter of the present embodiment will be described. When the rotating wheel 132 in which the permanent magnet 133 of the main body 130 is installed rotates, the magnetic sensor 121 installed inside the wireless communication module case 110 detects a magnetic field. The control unit 124 integrates the output of the magnetic sensor to calculate the gas usage amount and store it in the memory. In addition, when receiving a signal from the timer 127, the control unit controls the RF module to transmit the usage amount stored in the memory for a predetermined time to the external wireless communication device through the RF module. In addition, the controller 1245 may receive a signal from the temperature sensor 122 and the pressure sensor 123, calculate a change in gas volume according to temperature, and correct and store the calculated gas usage amount.

According to the gas meter of the present invention as described above, unlike the conventional cumulative amount storage method, only the amount of use per unit time is stored, and thus there is an advantage that the storage space of the memory can be efficiently used.

In addition, according to the gas meter of the present invention, it is possible to compensate the volume of the gas that changes according to the temperature and pressure of the incoming gas to accurately measure the amount of gas used.

On the other hand, according to the wireless meter reading system of the gas meter of the present invention has a merit that it is easy to obtain the measurement data for billing by detachably installing the wireless communication module to the gas meter so that the measurement data recorded in the memory can be transmitted wirelessly.

In addition, according to the present invention, the display device of the conventional mechanical gas meter installed in the generation is replaced with the display device 140 formed with the permanent magnet and the sensor accommodating groove 134, the wireless communication module of the present embodiment By installing this, wireless metering can be carried out at low cost.

One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art may change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (10)

delete delete delete A reed switch provided with a gas inlet and an outlet, the gas inlet and outlet being connected to an external gas inlet and outlet by a connector, and outputting a pulse by a magnet installed on the rotating plate to measure the flow rate of gas; In the gas meter including a meter for receiving the pulse output from the switch to calculate the flow rate of the gas, and a memory for recording the measurement data calculated by the meter, Only the usage amount of each set time unit is recorded in the memory, The outlet connector is provided with a temperature sensor for measuring the temperature of the gas passing through, and a pressure sensor for measuring the pressure, Calculate the temperature data and the pressure data from the signals input from the temperature sensor and the pressure sensor, receive a flow rate calculation value output from the meter reading unit, perform a correction according to temperature and pressure, and display a control signal for displaying the result. And a display unit for displaying a corrected measurement value by receiving a control signal from the controller, and outputting the control signal. Further comprises an external interface for communication with the outside, Removably installed in the main body of the gas meter, the gas meter further comprises a wireless communication module electrically connected to an external interface for transmitting the measurement data of the memory wirelessly. A gas meter main body having a gas inlet and an outlet and having a gas consumption display means using a mechanical rotating wheel provided on the front surface, and a permanent magnet provided on the rotating wheel of the main body of the gas meter; A magnetic sensor for detecting rotation of the permanent magnet, a timer, a memory, a wireless communication module, and an output of the magnetic sensor are calculated and stored in the memory by calculating gas consumption, and stored in the memory at predetermined time intervals in the timer. And a wireless communication module having a control unit for reading the stored gas consumption information and transmitting the stored gas consumption information to an external wireless communication module, the wireless communication module detachably installed on the main body of the gas meter. The method of claim 5, The display means of the gas meter body is formed with a sensor accommodating portion accommodating groove formed by removing a portion of the lower portion of the rotating wheel on which the permanent magnet is installed. The wireless communication module includes a case formed with a sensor receiving portion protruding to be inserted into the sensor receiving portion receiving groove of the main body, the magnetic sensor is a gas meter, characterized in that installed inside the sensor receiving portion of the case. The method of claim 6, Coupling protrusions are formed on the rear surface of the wireless communication module toward the gas meter body. Gas meter, characterized in that the coupling projection insertion groove for inserting the coupling projection on the front surface of the gas meter body. The method of claim 7, wherein The inner surface of the sensor receiving portion receiving groove of the main body is formed with a guide for guiding the insertion position when the sensor receiving portion of the wireless communication module is inserted, The gas meter, characterized in that the guide groove for guiding the sensor receiving portion guide groove on the outer surface of the sensor receiving portion of the wireless communication module. The method of claim 8, Gas meter, characterized in that only the amount of use by the set time unit is recorded in the memory. The method of claim 9, The outlet connector of the main body is provided with a temperature sensor for measuring the temperature of the gas passing through, and a pressure sensor for measuring the pressure, The controller calculates temperature data and pressure data from signals input from a temperature sensor and a pressure sensor, receives the output of the magnetic sensor, performs correction according to temperature and pressure on the calculated gas consumption, and stores the result in a memory. Gas meter, characterized in that for storing.

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