KR20040052550A - Gas meter for remote measurement decreasing battery consumption - Google Patents

Abstract

PURPOSE: A telemetering gas meter is provided to reduce battery consumption by displaying an amount of used gas in a usage gas display section such that a user checks an amount of used gas. CONSTITUTION: A telemetering gas meter(201) includes an upper case(205), a lower case(207), a display section(241), an optical sensor(251) and a telemetering section(255). The upper case(205) is formed at one side thereof with an inlet(211) and at the other side thereof with an outlet(212). The upper case(205) includes a butterfly shaft(221), a first gear(231) coupled to the other side end of the butterfly shaft(221), a second gear(232) engaged with the first gear(231), a third gear(233) engaged with the second gear(232), and a cover(245) for covering the display section(241). The second gear(232) is formed with a slit(237).

Description

Gas meter for remote measurement decreasing battery consumption}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas meter for measuring gas volume, and more particularly to a gas meter for remote meter reading that reduces battery consumption and extends the use of the battery.

As gas supplies go smoothly, more homes and businesses use gas to cook food or run boilers. Gas supplied to homes or businesses must pass through gas meters. Thus, the amount of gas used in a home or business is represented by a number on the gas meter installed there, and the gas supplier charges for the gas usage by looking at the number on the gas meter. Gas bills are usually charged on a monthly basis, so gas meter readers should visit their homes or businesses every month to check gas usage. Recently, however, in order to eliminate such inconvenience, a gas meter has been added to the gas meter to remotely read gas usage.

Figure 1a is a view showing a front view of a conventional remote metering gas meter, Figure 1b shows a state in which the light detection reflector is attached to the number wheel shown in Figure 1a, Figure 1c is a remote shown in Figure 1a It is sectional drawing which cut AB surface of the gas meter for meter reading.

1A to 1C, the remote metering gas meter 101 includes an inlet 111 through which gas flows in, an outlet 112 through which gas flows out, and a display unit 121 displaying gas usage.

The display unit 121 is composed of a plurality of number wheels 141 to 147, and a light detecting reflector 131 is attached to the lowest number wheel 147 and emits light toward the lowest number wheel 147. The optical sensor 151 and the receiving optical sensor 161 for receiving the light reflected from the reflecting plate 161 is provided. Then, a battery (not shown) for operating the optical sensor 151 for transmission and the optical sensor 161 for reception is mounted on the gas meter 101 for remote meter reading.

When gas flows in and out through the inlet 111 and the outlet 112, the gas usage is displayed on the display unit 121 while rotating from the lowest number wheel 147 according to the amount of gas. At this time, in order to transmit the gas usage remotely, the transmitting optical sensor 151 continuously emits light toward the lowest number wheel 147, and the receiving optical sensor 161 reflects the light reflected from the reflecting plate 131. It receives and converts it into an electrical signal and transmits it remotely.

That is, the transmitting optical sensor 151 is always kept on and emits light because it does not know when the reflecting plate 131 will appear at the reflective position while the lowest number wheel 147 is rotating. 161 also continues to operate because light may not be reflected from the reflector 131 while the lowest number wheel 147 is rotating. The light emitted from the optical sensor 151 for transmission is not reflected when the light is emitted to the non-reflective plate 131, so that the optical sensor 161 for receiving does not receive light, and is necessarily emitted by the reflective plate 131. Only light is reflected from the reflecting plate 131 so that the receiving optical sensor 161 can receive the light.

As described above, since the transmitting optical sensor 151 and the receiving optical sensor 161 continue to operate in the related art, the battery life of the battery mounted on the remote metering gas meter 101 increases, resulting in short battery life. Therefore, the administrator who manages the remote meter gas meter 101 has to change the battery frequently.

However, since there are so many homes or businesses where the remote metering gas meter 101 is installed, in order to frequently change the batteries installed in the remote metering gas meter 101, the home or workplace with the remote metering gas meter 101 is installed. You have to go around. This is a big problem that wastes a lot of manpower, time and money.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and an object thereof is to provide a gas meter for remote meter reading with low battery consumption.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

Figure 1a is a view showing a front view of a conventional gas meter for remote meter reading.

FIG. 1B shows a state in which the light detecting reflector is attached to the number wheel shown in FIG. 1A.

FIG. 1C is a cross-sectional view of the AB surface of the gas meter for remote meter reading shown in FIG. 1A.

2 is an exploded perspective view of a gas meter for remote meter reading according to the first embodiment of the present invention.

3 is an enlarged plan view of the second gear illustrated in FIG. 2.

4A is a cross-sectional view of the second gear and the optical sensor shown in FIG. 2.

FIG. 4B illustrates an internal circuit of the optical sensor shown in FIG. 4A and a microprocessor connected thereto.

FIG. 5 is a plan view illustrating another embodiment of the second gear shown in FIG. 2.

6 is a detailed block diagram of the remote meter reading unit shown in FIG. 2.

FIG. 7A illustrates a pulse signal generated by the optical sensor when the second gear shown in FIG. 2 rotates at the maximum speed.

FIG. 7B shows a pulse signal generated by the optical sensor when the second gear shown in FIG. 2 rotates at half the maximum speed.

8 is an exploded perspective view of a gas meter for remote meter reading according to a second embodiment of the present invention.

9 is an exploded perspective view of a gas meter for remote meter reading according to a third embodiment of the present invention.

FIG. 10 is an enlarged view of number wheels and a reed switch of the gas amount display unit shown in FIG. 9.

FIG. 11 illustrates an internal circuit of the reed switch illustrated in FIGS. 9 and 10 and a microprocessor connected thereto.

12 is a waveform diagram of a pulse signal generated in the reed switch shown in FIG. 11.

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

201,801,901; Remote Meter Gas Meter

205,805,905; Upper case, 207,807,907; Lower case

211; Inlet, 212; exit

221; Butterfly axis, 231 to 233; First to third gears

237; Slit, 241,841,941; Gas amount display part

241a-241h; Numeric wheels, 251; Light sensor

255,855,955; Telemeters, 261; Diaphragm Bracket

264; Diaphragm, 275; Crank road

281; Diaphragm bracket shaft, 285; Right Angle Shaft

291; Right angle shaft bracket, 295; valve

851,951; Reed Switch Modules, 832,932; Second gear

837,937; Magnets, 941a to 914h; Number wheels

The present invention to achieve the above technical problem

An upper inlet is formed at one side and an outlet is formed at the other side, and the gas rotates while the gas is introduced and exited through the inlet and the outlet, and the gear is formed with a slit formed therein, and receives the gas introduced through the inlet. A lower case which rotates the gear during outflow, a light transmitting unit which is installed adjacent to the slit and emits light and a light receiving unit which receives the light, wherein the slit is connected to the light transmitting unit when the gear rotates. An optical sensor installed to pass between the optical receivers and generating a pulse signal while the gear rotates, and a battery and receiving power from the battery to turn on / off the optical sensor at predetermined time intervals and receive from the optical sensor. One pulse signal is converted into the amount of gas passing through the inlet and the outlet for remote transmission It provides a remote meter gas meter characterized in that it comprises a remote meter reading.

Preferably, the upper case is provided with a butterfly shaft on the inside so that the hole is formed in the center of the front and rotatable through the hole, the gear is fastened to the other end of the butterfly shaft, the lower case is in the center A diaphragm having a diaphragm coupled to the diaphragm bracket, one side of which is coupled to the diaphragm bracket, and the other side is hinged to the crank rod and the valve, and the crank rod and the right angle shaft bracket are hinged to both sides to one end thereof. It is provided with a right angle shaft in contact with the butterfly axis to convert the linear reciprocating motion of the crank rod into a rotary motion.

Preferably, the gear is composed of a first gear fastened to the other end of the butterfly shaft, and a disk rotating in engagement with the first gear and having a larger diameter than the first gear, the optical sensor is fixed to the adjacent portion The second gear and the third gear is rotated in engagement with the second gear and the other side is fastened to the gas amount display portion, the slit is formed in the second gear.

Preferably, the slits may be formed in plural in the gear.

Preferably, it is also provided in the upper case, and is further provided with a gas amount display unit that is fastened to the gear to display the number of gas through the inlet and outlet as the gear rotates so that the user can see.

The present invention also to achieve the above technical problem,

An inlet is formed on one side and an outlet is formed on the other side, and the upper case is rotated while the gas is introduced and exited through the inlet and the outlet, and a gear is attached to the inside, and the gas is received through the inlet. A lower case which rotates the gear during outflow through the reed, a reed switch fixedly installed adjacent to the gear and turned on when a magnet attached to the gear is in proximity, and electrically connected to the reed switch and powered from a microprocessor. A remote meter reading gas meter comprising a remote meter for receiving a voltage to provide a current to the reed switch and receiving the signal output from the reed switch and converting it into the amount of gas passing through the inlet and the outlet to the outside To provide.

Preferably, the remote meter is provided with a microprocessor connected to the battery and the reed switch, the microprocessor is a time for processing the signal transmitted from the reed switch (in the case of a household gas meter, the ON operation at intervals of 1 second ON time is set to 1ms.) It is converted to the operation mode only for a while, and during the standby time, it is converted to the sleep mode to reduce the battery consumption to 1/100.

The present invention also to achieve the above technical problem,

An inlet is formed on one side and an outlet is formed on the other side, and a case in which a rotating gear is installed inside while gas is introduced through the inlet and the outlet, and a plurality of rotating parts are engaged with the gear to receive the rotational force of the gear. A gas quantity display unit having four number wheels, a magnet attached to a side of the lowest number wheel among the number wheels, a reed switch fixedly installed at an adjacent portion of the magnet, and a power source connected from the microprocessor. A remote meter reading gas meter comprising a remote meter for receiving a voltage to provide a current to the reed switch and receiving the signal output from the reed switch and converting it into the amount of gas passing through the inlet and the outlet to the outside To provide.

Preferably, the remote meter is provided with a microprocessor connected to the battery and the reed switch, the microprocessor is a time for processing the signal transmitted from the reed switch (in the case of a household gas meter, the ON operation at intervals of 1 second The signal processing time is set to 1ms.), And the operation mode is switched to the sleep mode during the standby time, thereby reducing the battery consumption to 1/100.

The present invention also to achieve the above technical problem,

An upper inlet is formed at one side and an outlet is formed at the other side, and the gas rotates while the gas is introduced through the inlet and the outlet, and a gear having a reflector is formed therein, and receives the gas introduced through the inlet. A lower case which rotates the gear during outflow, a light transmitting unit which is installed in an adjacent portion of the reflecting plate and emits light and a light receiving unit which receives the light, and the reflecting plate is the light transmitting unit when the gear rotates. And an optical sensor installed to pass between the optical receiver and the optical receiver, and generating a pulse signal while the gear rotates, and receiving a power from the battery to turn on / off the optical sensor at regular intervals. Convert the received pulse signal into the amount of gas passing through the inlet and outlet Subjects provides a gas meter for remote reading of comprising a remote meter reading.

Preferably, the gear is engaged with the second gear consisting of a first gear is fastened to the other end of the butterfly shaft, a second gear consisting of a disk that rotates in engagement with the first gear and having a larger diameter than the first gear, and the second gear The other side includes a third gear fastened to the gas amount display unit, the reflector is formed on one of the first to third gears, and the optical sensor is fixed to an adjacent portion of the reflector.

Preferably, the reflecting plate may be formed in plural in one of the gears.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

2 is an exploded perspective view of a gas meter for remote meter reading according to the present invention. Referring to FIG. 2, the remote metering gas meter 201 includes an upper case 205, a lower case 207, a gas amount display unit 241, an optical sensor 251, and a remote metering unit 255.

An inlet 211 is formed at one side of the upper case 205 and an outlet 212 is formed at the other side. The upper case 205 has a hole formed in the center of the front surface thereof, and includes a butterfly shaft 221 installed therein so as to be rotatable through the hole, a first gear 231 and a first gear 231 fastened to the other end of the butterfly shaft 221. A second gear 232 composed of a disk having a larger diameter than the first gear 231, rotating in engagement with the gear 231, a third gear 233 rotating in engagement with the second gear 232, and a gas amount display unit 241. ) Is provided with a display cover (245). The first to third gears 231 to 233 may be constituted by one or more gears. The slit 237 is formed in the second gear 232. The slit 237 can be installed in any one of the first to third gears.

The lower case 207 rotates the butterfly shaft 221 while receiving the gas introduced through the inlet 211 and flowing it out through the outlet 212. That is, the lower case 207 has a diaphragm 264 fastened to the diaphragm bracket 261 at the center thereof, one side is fastened to the diaphragm bracket 261 and the other is hinged to the crank rod 275 and the valve 295. The combined diaphragm bracket shaft 281 and the crank rod 275 and the right angle shaft bracket 291 are hinged at both ends so that one end thereof contacts the butterfly shaft 221 to perform a straight reciprocating motion of the crank rod 275. And a right angle shaft 285 for converting the rotary motion, and a diaphragm cover 267 for sealing the metering chamber 271.

The gas amount display unit 241 is installed at the front of the upper case 205 and includes a plurality of number wheels 241a to 241h which rotate in engagement with the third gear 233. That is, as the third gear 233 rotates, the number wheels 241a to 241h rotate to display the amount of gas passing through the remote metering gas meter 201 in numbers so that the user can check it.

The optical sensor 251 is installed at an adjacent portion of the second gear 232, transmits and receives light to generate a pulse signal, and is used to measure the rotation speed of the second gear 232. It is possible to fix the photosensor 251 to an adjacent portion of the second gear 232 in a known manner. The optical sensor 251 will be described in detail with reference to FIG. 4.

The remote meter reading unit 255 includes a battery 641 of FIG. 6 and is electrically connected to the optical sensor 251. The remote metering unit 255 receives power from the battery 641 of FIG. 6 and turns on the optical sensor 251 at regular time intervals, and converts the pulse signal received from the optical sensor 251 into a gas amount to externally. Send remotely to the system. The remote meter reading unit 255 will be described in detail with reference to FIG. 6.

The operation of the remote metering gas meter 201 will be described.

When the gas flows through the inlet 211, the gas flows into the metering chamber 271 formed under the valve 295 to flow the diaphragm 264 back and forth. When the diaphragm 264 flows back and forth, the diaphragm bracket 261 flows to rotate the diaphragm bracket shaft 281, and thus the valve 295 and the crank rod 275 hinged to the diaphragm bracket shaft 281, respectively. Flows for a certain period.

When the valve 295 flows for a certain period from side to side, the metering chamber passage (not shown) formed at the lower side of the valve 295 is repeatedly opened and closed to control the gas flowing into the metering chamber 271 and discharged from the metering chamber 271. Gas is connected to the outlet 212 and is discharged to the outside through an outlet passage (not shown) formed at the center of the lower case 207, and the crank rod 275 is hinged at both ends to the right angle shaft bracket 291. The right angle shaft 285 is rotated.

The rotational force of the right angle shaft 285 rotates the butterfly shaft 221 provided in the upper case 205, and the first gear 231 fastened to the outer end of the butterfly shaft 221 rotates at the same time. The rotational force transmitted to the first gear 231 operates the gas amount display unit 241 through the second gear 232 and the third gear 233 to numerically calculate the amount of gas passing through the gas meter 201 for remote meter reading. Will be displayed.

While the second gear 232 is rotated, the optical sensor 251 is controlled by the remote meter reading unit 255 to repeat the on / off at a predetermined time interval. At this time, the optical sensor 251 generates a low signal while the slit 237 formed in the second gear 232 passes through the lower part of the optical sensor 251, and the slit 237 is an optical sensor. While not passing through the lower portion of 251, the optical sensor 251 generates a high signal and transmits it to the remote meter reading unit 255.

When the first high signal following the low signal transmitted from the light sensor 251 is input, the remote meter reading unit 255 increases the count and converts it into the amount of gas that has passed through the gas meter 201 for remote meter reading. Or transmit via a wireless network. The remote meter 255 considers that the second gear 232 has rotated once when the first high signal following the low signal is input.

In this way, the slit 237 is formed in the second gear 232 and the optical sensor 251 is provided in the adjacent portion of the slit 237, so that the gas usage can be read remotely, and the optical sensor 251 is provided. By turning off and turning on only for a certain time, the life of the battery 641 of FIG. 6 is extended.

The space is small between the gas amount display portion 241 and the upper case 205. Therefore, bulky devices are difficult to install. However, since the slit 237 formed in the second gear 232 is small in size, and the optical sensor 251 is also small in volume, the slit 237 between the gas amount display part 241 and the upper case 205 or between the second gear 232 may be formed. Easy to install on the bottom

3 is an enlarged plan view of the second gear 232 illustrated in FIG. 2. Referring to FIG. 3, the slit 237 is formed in a semicircular shape in the second gear 232 and has a constant height.

As such, since the slit 237 is simple in shape, it is very easy for a person skilled in the art to form the slit 237 in the second gear 232, and thus, the manufacturing cost does not increase greatly.

4A is a cross-sectional view of the second gear 232 and the optical sensor 251 shown in FIG. 2. Referring to FIG. 4A, an optical sensor 251 is installed at an adjacent portion of the slit 232, and includes an optical transmitter 411 for emitting light and an optical receiver 421 for receiving light emitted from the optical transmitter 411. ). While the second gear 232 is rotated, the slit 237 is provided to pass between the light transmitter 411 and the light receiver 421.

7A and 7B show pulse signals generated by the optical sensor when the second gear shown in FIG. 2 rotates at the maximum speed and at half the maximum speed, respectively. The pulse waveform shown in FIG. 7A is when it takes 11 seconds for the second gear 232 to rotate, and the arrows indicate an output value when the photosensor 251 is turned on at 5 second intervals. The pulse waveform shown in FIG. 7B is when the second gear 232 takes 22 seconds to rotate one turn, and the arrows indicate an output value when the photosensor 251 is turned on at 5 second intervals. The operation of the light sensor 251 will be described with reference to FIGS. 7A and 7B.

While the second gear 232 is rotated once, the optical sensor 251 is turned on and off once every predetermined time. When the light sensor 251 is turned on, the light transmitter 411 emits light toward the light receiver 421, and when the light receiver 421 receives the light, the light sensor 251 generates a pulse signal. That is, when light is emitted from the light transmitter 411 while the slit 237 does not pass between the light transmitter 411 and the light receiver 421, the light receiver 421 receives the light emitted from the light transmitter 411. By receiving, the photosensor 251 generates a high level pulse signal. However, if the light transmitter 411 emits light while the slit 237 passes between the light transmitter 411 and the light receiver 421, the light receiver 421 receives the light emitted from the light transmitter 411. As a result, the photosensor 251 generates a low level pulse signal.

However, the period of the pulse signal varies according to the rotational speed of the second gear 232. That is, when the second gear 232 rotates at the maximum speed, as shown in FIG. 7A, a short period pulse signal is generated. However, when the second gear 232 rotates at the half speed of the maximum speed, As shown, a pulse signal having a period two times longer than the pulse signal shown in FIG. 7A is generated.

The rotation speed of the second gear 232 may be fast or slow depending on the amount of gas entering and exiting the gas meter for remote metering (201 of FIG. 2). That is, the greater the amount of gas flowing into the remote metering gas meter (201 of FIG. 2), the shorter the time it takes for the second gear 232 to rotate one minute, and the flow of gas into the remote metering gas meter (201 of FIG. 2). The smaller the amount of gas emitted, the longer the second gear 232 rotates once.

When the second gear 232 rotates at the maximum speed, the optical sensor 251 is turned on twice while the second gear 232 rotates once. For example, it is turned on once at the two points a1 and b1 of FIG. 3. A high level pulse signal is generated when the photosensor 251 is turned on at the point a1, and a low level pulse signal is generated when the photosensor 251 is turned on at the point b1.

When the second gear 232 rotates slowly, the optical sensor 251 is turned on several times while the second gear 232 rotates once. For example, they are turned on once at the six points a1 to a3 and b1 to b3 of FIG. 3. High level pulse signals when light sensor 251 is turned on at points a1, a2, a3 and low level pulse signals when light sensor 251 is turned on at points b1, b2, b3 Occurs.

The predetermined time, that is, the time when the light sensor 251 is turned on, the maximum amount of gas that can pass through the remote metering gas meter (201 of FIG. 2) per unit time (inlet 211 of FIG. 2) and the outlet (212 of FIG. 2). It is preferable to set the time taken for the second gear 232 to be divided by half when it flows in through and out, that is, when the second gear 232 rotates fastest.

Taking a home gas meter as an example, the setting of the predetermined time will be described.

The maximum flow rate per hour of the domestic gas meter is 5 [m 3 / h], and when the second gear 232 rotates once, the lowest number wheel 147 makes 1.6 revolutions. Therefore, the minimum rotation time of the second gear 232 takes 11.52 seconds at a time. (See Equation 1)

Revolutions of the second gear = 5000/16 = 312.5 [times]

Time required for one revolution of the second gear = 3600 seconds (1 hour) / 312.5 times = 11.52 [sec]

As described above, since the fastest rotation time of the second gear 232 is 11.52 seconds, the predetermined time can be set to 5.76 seconds, which is half of 11.52 seconds. However, in consideration of the error, it is preferable to turn on the optical sensor 251 once every 5.5 seconds. At this time, the on duration t1 of the optical sensor 251 may be set differently according to the user's design, and it may be set so as not to exceed 1/1000 [sec], that is, 1 [ms] as short as possible. desirable. If the on duration t1 of the optical sensor 251 is long, power consumption is large, and as the on duration t1 of the optical sensor 251 is short, power consumption is less.

At this time, when the current consumption of the optical sensor is 20 [mA / h], the current consumption of 10 years is 318.5 [mA / h]. (See Equation 2)

Current consumption duty = 1: 5500 = 1ms (operating time): 5500ms (on / off time interval)

10 years current consumption of optical sensor = 20 (mA) * 24 (hour) * 365 (day) * 10 (year) / 5500 (duty) = 318.5mA

According to this calculation formula, when the AA battery (2700mA / h) is mounted in the gas meter (201 of FIG. 2) can be used for more than 10 years. That is, since the replacement period of the gas meter (201 of FIG. 2) is 5 years, it is not necessary to replace the battery (641 of FIG. 6) after installation.

FIG. 4B illustrates an internal circuit of the optical sensor shown in FIG. 4A and a microprocessor connected thereto. Referring to FIG. 4B, the light transmitter 411 includes a photodiode 451 and a resistor 461, the light receiver 421 includes a photo transistor 452 and a resistor 462, and terminals T1. T2 is connected to the microprocessor MP1. The photo transistor 452 is turned on only when light is input to the base.

When the power supply voltage is supplied from the microprocessor MP1 to the node N1, the photodiode 451 transmits light. Then, the photo transistor 452 receives the light and is turned on, and a voltage is generated at the node N2 while the photo transistor 452 is turned on. The voltage generated at the node N2 is transmitted to the controller 621 of FIG. 6, and the microprocessor MP1 counts this as one pulse signal. When the supply voltage from the microprocessor MP1 is stopped, the photodiode 451 and the phototransistor 452 do not operate. The microprocessor MP1 is provided in the controller 641 shown in FIG. 6.

FIG. 5 is a plan view illustrating another embodiment of the second gear shown in FIG. 2. Referring to FIG. 5, a plurality of slits 511 to 513 are formed in the second gear 232, and the length L1 of the slit and the distance L2 between the slits have the same length.

The optical sensor 251 of FIG. 2 repeats on / off a plurality of times while the second gear 232 rotates, that is, twice the number of slits. For example, if there are two slits, the optical sensor 251 of FIG. 2 repeats on / off four times, and if there are three slits, the optical sensor (251 of FIG. 2) repeats on / off six times.

At this time, the optical sensor 251 of FIG. 2 generates pulse signals by the number of slits while the second gear 232 is rotated once. For example, if there are two slits, the optical sensor 251 of FIG. 2 generates two pulse signals while the second gear 232 rotates one turn, and if there are three slits, the optical sensor 251 of FIG. The two gears 232 generate three pulse signals during one revolution.

Accordingly, the remote meter reading unit 255 of FIG. 2 also varies the method of converting a pulse signal into a gas amount according to the number of slits. For example, if the number of slits is two, the remote metering unit (255 in FIG. 2) counts two pulse signals and counts them as one rotation of the second gear 232. If the number of slits is three, the remote metering unit (255 in FIG. 2) counts three pulse signals and calculates them as the second gear 231 rotates one round.

As such, by forming the plurality of slits 511 to 513 in the second gear 232, the remote metering unit (255 of FIG. 2) is more precisely than when one slit is formed in the second gear 232. Gas usage can be measured. Instead, the life of the battery 641 of FIG. 6 is shorter than when one slit is formed in the second gear 232. Here, as the number of slits increases, the gas amount can be accurately measured, but the life of the battery 641 of FIG. 6 is shortened. Therefore, according to the function of the remote metering gas meter 251 of FIG. 2, the number of slits 511 to 513 is appropriately formed to accurately measure the gas amount and to extend the life of the battery 641 of FIG. 6. Needs to be.

It is also possible to attach the reflector to the second gear 232 of FIG. 2 instead of the slit 237 of FIG. 2. At this time, when the reflecting plate passes near the optical sensor 251 of FIG. 2 while the second gear 232 of FIG. 2 rotates, the light emitted from the light transmitting unit 411 of FIG. 4 is reflected from the reflecting plate to light the light. Received by the receiver 421 of FIG. 4, the optical sensor 251 of FIG. 2 generates pulse signals as illustrated in FIGS. 7A and 7B. However, if the reflector does not pass near the optical sensor 251 of FIG. 2 while the second gear 232 of FIG. 2 rotates, the light emitted from the optical transmitter 411 of FIG. 4, 421 does not receive light, so the optical sensor 251 of FIG. 2 does not generate a pulse signal. Even if a reflecting plate is attached to the second gear 232 of FIG. 2 instead of the slit (237 of FIG. 2), the operation of the remote metering gas meter 201 is the same as above.

FIG. 6 is a detailed block diagram of the remote meter reading unit 255 shown in FIG. 2. Referring to FIG. 6, the remote meter reading unit 255 includes a controller, a transmitter, and a battery.

The controller 621 turns on the optical sensor 251 of FIG. 2 every predetermined time, receives a pulse signal output from the optical sensor 251 of FIG. 2, and converts it into gas usage. The controller 621 includes one of a central processing unit (CPU) and a microprocessor. The controller 621 maintains a sleep mode in a standby state and switches to an operation mode when the predetermined time is reached. After supplying a power supply voltage to the circuit, the pulse signal output from the optical sensor 251 of FIG. 2 is received, processed, and then converted into a sleep mode again. When the controller 621 is in the sleep mode, the power consumption is very low, so the consumption of the battery 641 of FIG. 6 is reduced.

The transmitter 631 receives a signal output from the controller 621 and transmits the signal to the outside through a wireless or wired line.

The battery 641 supplies a power supply voltage to the controller 621 and the transmitter 631.

8 is an exploded perspective view of a gas meter for remote meter reading according to a second embodiment of the present invention. Referring to FIG. 8, the gas meter 801 for the remote meter reading according to the second embodiment of the present invention includes an upper case 805, a lower case 807, a gas amount display part 841, a reed switch module 851, and a remote control. The meter 855 is provided. The structure of the upper case 805, the lower case 807, the gas amount display part 841, and the remote meter reading part 855 includes the upper case 205, the lower case 207, the gas amount display part 241, and the like. Since it is the same as the remote meter reading unit 255, a description thereof will be omitted to avoid duplication.

However, the structure of the second gear 832 shown in FIG. 8 and the structure of the second gear 232 shown in FIG. 2 are different, and the reed switch module is shown in FIG. 8 instead of the optical sensor 251 shown in FIG. 2. Since the difference is provided with (851) will be described.

The magnet 837 is attached to the edge of the second gear 832, the reed switch module 851 is fixed to the adjacent portion of the second gear 832, both ends of the reed switch module 851 is a control unit ( 621 of FIG. 6. It is possible to fix the reed switch module 851 to the adjacent portion of the second gear 832 in a known manner.

As shown in FIG. 11, the reed switch module 851 includes a reed switch SW1 and a resistor R1, and the terminals T3 and T4 are connected to the controller 621 of FIG. 6.

When the gas enters and exits the gas meter 801, the second gear 832 rotates, and when the magnet 837 reaches the lower part of the reed switch (SW1 in FIG. 11) while the second gear 832 rotates, The switch (SW1 in Fig. 11) is turned off and on. While the reed switch SW1 of FIG. 11 is turned on, a voltage is generated at the terminal T4, and this voltage is transmitted to the controller 621 of FIG. 6, which is controlled by the controller 621 of FIG. 6. To count. The control unit 621 of FIG. 6 recognizes one pulse period (T11 of FIG. 12) until the next pulse signal is input after the pulse signal is input, and the second gear 832 recognizes this state by one rotation. Count as one.

The control unit 621 of FIG. 6 maintains the sleep mode in the standby state and processes the signal of the reed switch (SW1 in FIG. 11) (ON operation is performed every 1 second in the case of a household gas meter, and the ON time is 1 ms. .) Switch to operation mode only for a while and to sleep mode during standby time to reduce battery consumption to 1 / 100th.

As described above, the magnet 883 is attached to the second gear 832 according to the second embodiment of the present invention, and the reed switch module 851 is attached to the adjacent portion of the second gear 832, thereby reducing the amount of gas used. The battery can be read remotely and the life of the battery 641 of FIG. 6 is extended by turning off the reed switch (SW1 of FIG. 11) and turning it on only for a certain time.

9 is an exploded perspective view of a remote metering gas meter according to a third embodiment of the present invention, and FIG. 10 is an enlarged view of the number wheels and the reed switch module of the gas amount display unit shown in FIG. 9. 9, the remote metering gas meter 901 according to the third embodiment of the present invention includes an upper case 905, a lower case 907, a gas amount indicator 941, a reed switch module 951, and a remote controller. The meter reading part 255 is provided. The structures of the upper case 905, the lower case 907, and the remote metering unit 955 are the same as those of the upper case 205, the lower case 207, and the remote metering unit 255 shown in FIG. 2. Descriptions will be omitted to avoid duplication.

9 and 10, the slit 937 shown in FIG. 2 is not formed in the second gear 932, and the gas meter 901 for remote meter reading uses the optical sensor 251 shown in FIG. 2. Since the magnet 937 and the reed switch module 951 attached to the lowest number wheel 941h of the gas amount display portion 941 are different from those of the gas meter 201 shown in FIG. This will be explained.

The magnet 937 is attached to the side of the lowermost numeric wheel 941h, and the reed switch module 951 is fixedly installed at a predetermined distance from the side of the lowermost numeric wheel 941h. Both ends of the reed switch module 951 are connected to the remote meter reading unit 955. It is possible to fix the reed switch module 951 on the upper side of the lowest number wheel 941h in a known manner.

As shown in FIG. 11, the reed switch module 851 includes a reed switch SW1 and a resistor R1, and terminals T3 and T4 are connected to the microprocessor MP2. The microprocessor MP2 is provided in the controller 621 shown in FIG. 6.

When gas enters and exits the gas meter 901, the lowest number wheel 941h rotates, and the magnet 937 approaches the reed switch SW1 of FIG. 11 while the lowest number wheel 941h rotates. SW1 of FIG. 11 is turned off and then turned on. While the reed switch SW1 of FIG. 11 is turned on, a voltage is generated at the terminal T4, which is transmitted to the microprocessor MP2, which counts it as one pulse signal. The microprocessor MP2 recognizes one pulse period (T11 in FIG. 12) until the next pulse signal is input after the pulse signal is input, and recognizes this state as one rotation of the lowest number wheel 941h. Consider.

The microprocessor MP2 maintains the sleep mode in the standby state and processes the signal of the reed switch (SW1 in FIG. 11). (In the case of the domestic gas meter, the ON operation is performed every 1 second. The ON time is 1ms.) It only enters the active mode for a while and goes to sleep during standby, reducing battery consumption to 1 / 100th of a second.

As such, since the time for the microprocessor MP2 to operate in the operation mode is short, the power consumption of the battery 641 of FIG. 6 is greatly reduced.

The best embodiments have been disclosed in the drawings and the specification, and the terminology used herein is for the purpose of describing the invention only and is not intended to be limiting of the scope of the invention as defined in the appended claims or claims. Therefore, those skilled in the art will be capable of various modifications and other equivalent embodiments from this, and therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

As described above, according to the present invention, the amount of gas flowing into the remote metering gas meters 201, 801, 901 is displayed on the gas amount display units 241, 841, 941 so that the user can not only directly read the eye, but also the numerical value of the gas amount is read remotely. By the external unit 255, 855, 955, it is transmitted to the outside via a wired or wireless network, so that the gas usage of the remote metering gas meter 201,801,901 can be read remotely.

In addition, the optical sensor 251 is turned off in the standby state by the control of the remote meter reading unit 255, and then turns on every predetermined time t1. At this time, the ON duration of the optical sensor 251 is set very short. The amount of current consumed by the remote metering gas meter 201 is greatly reduced, and the amount of current consumed by the remote metering gas meter 801,901 is drastically reduced by turning on the reed switch SW1 only for a predetermined time t11. The life of the battery 641 mounted on the remote metering gas meters 201, 801, 901 is extended by about 5,000 times (1000 times in the case of the lead switch).

Therefore, there is no need to replace the battery 641 mounted on the remote metering gas meters 201, 801, 901 installed in the home or workplace.

Claims (12)

An upper case in which an inlet is formed at one side and an outlet is formed at the other side, the upper case being rotated while a gas is introduced and exited through the inlet and the outlet, and a gear having a slit formed therein; A lower case which rotates the gear while receiving the gas introduced through the inlet and flowing it out through the outlet; It is provided in the vicinity of the slit, and provided with a light transmitting unit for emitting light and a light receiving unit for receiving the light, the slit is installed so as to pass between the light transmitting unit and the light receiving unit when the gear rotates, An optical sensor for generating a pulse signal while the gear is rotating; And A remote reading unit having a battery, receiving power from the battery to turn on / off the optical sensor at predetermined time intervals, and converting the pulse signal received from the optical sensor into the amount of gas passing through the inlet and the outlet for remote transmission. Remote metering gas meter characterized in that it comprises. According to claim 1, wherein the upper case is formed with a hole in the center of the front has a butterfly shaft on the inside to be rotatable through the hole, and has the gear fastened to the other end of the butterfly shaft, The lower case has a diaphragm fastened to the diaphragm bracket in the center, and one side is fastened to the diaphragm bracket and the other side is a diaphragm bracket shaft hinged to the crank rod and the valve, and the crank rod and the right angle shaft bracket are at both ends. A hinge-coupled gas meter for a remote meter reading, characterized in that the one end is in contact with the butterfly shaft and a right angle shaft for converting the linear reciprocating motion of the crank rod into a rotary motion. The method of claim 2, wherein the gear A first gear fastened to the other end of the butterfly shaft; A second gear that meshes with the first gear and rotates, the second gear having a larger diameter than the first gear; And Rotated in engagement with a second gear and the other side is composed of a third gear fastened to the gas amount display, The slit is formed in one of the first to third gear, the gas meter for a remote meter reading, characterized in that the optical sensor is fixed to the adjacent portion of the slit. The gas meter for a remote meter reading of claim 1, wherein a plurality of slits may be formed in one of the gears. The gas amount display unit of claim 1, further comprising a gas amount display unit installed in the upper case and configured to numerically display the amount of gas that is fastened to the gear and passes through the inlet and the outlet as the gear rotates. Remote metering gas meter. An upper case in which an inlet is formed at one side and an outlet is formed at the other side, the upper case which rotates while gas flows in and out through the inlet and the outlet, and a gear having a magnet attached thereto; A lower case which rotates the gear while receiving the gas introduced through the inlet and flowing it out through the outlet; A reed switch fixed to an upper portion of the gear and turned on when a magnet attached to the gear approaches; And It is electrically connected to the reed switch, and receives a power supply voltage from a battery to turn on / off current to the reed switch at predetermined time intervals, and converts the pulse signal received from the reed switch into the amount of gas passing through the inlet and the outlet. Remote metering gas meter comprising a remote meter for transmitting to the outside. The method of claim 6, wherein the remote meter reading unit And a microprocessor connected to the battery and the reed switch, wherein the microprocessor turns current on / off to the reed switch at predetermined time intervals, and switches to an operation mode only during the time when the current of the switch is turned on, from the reed switch. A gas meter for remote meter reading, characterized in that to process the transmitted signal, the standby time is switched to the sleep mode to reduce battery consumption. An inlet is formed at one side and an outlet is formed at the other side, and a case in which a rotating gear is installed inside the gas while the gas is introduced through the inlet and the outlet; A gas amount display unit having a plurality of number wheels engaged with the gears and rotating by receiving a rotational force of the gears; A magnet attached to a side of the lowest number wheel of the number wheels; A reed switch fixed to an adjacent portion of the magnet; And It is electrically connected to the reed switch, receives a power supply voltage from a battery to turn on / off a current to the reed switch at regular intervals, and converts the pulse signal received from the reed switch into the amount of gas passing through the inlet and the outlet. Remote metering gas meter comprising a remote meter for transmitting to the outside. The method of claim 8, wherein the remote meter reading unit And a microprocessor connected to the battery and the reed switch, wherein the microprocessor turns current on / off to the reed switch at predetermined time intervals, and switches to an operation mode only during the time when the current of the switch is turned on, from the reed switch. A gas meter for remote meter reading, characterized in that to process the transmitted signal, the standby time is switched to the sleep mode to reduce battery consumption. An upper case in which an inlet is formed at one side and an outlet is formed at the other side, and a gas is rotated while gas is introduced and exited through the inlet and the outlet, and a gear having a reflector is formed inside; A lower case which rotates the gear while receiving the gas introduced through the inlet and flowing it out through the outlet; It is installed in the vicinity of the reflector, and provided with a light transmitting unit for emitting light and a light receiving unit for receiving the light, the reflector is installed so as to pass between the light transmitting unit and the light receiving unit when the gear is rotated, An optical sensor for generating a pulse signal while the gear is rotating; And A remote reading unit having a battery, receiving power from the battery to turn on / off the optical sensor at predetermined time intervals, and converting the pulse signal received from the optical sensor into a gas amount passing through the inlet and the outlet and transmitting remotely. Remote metering gas meter characterized in that it comprises. The method of claim 10, wherein the gear A first gear fastened to the other end of the butterfly shaft; A second gear that meshes with the first gear and rotates, the second gear having a larger diameter than the first gear; And Rotated in engagement with a second gear and the other side is composed of a third gear fastened to the gas amount display, The reflector is formed on one of the first to third gear, the gas meter for remote meter reading, characterized in that the optical sensor is fixed to the adjacent portion of the reflecting plate. The gas meter for a remote meter reading of claim 10, wherein the reflecting plate may be formed in plural in one of the gears.