KR100681490B1 - Signal generating system for remote inspection of a meter in lpg storage tank - Google Patents

Abstract

A transmission system for remote inspection of an LPG(Liquefied Petroleum Gas) storage tank is provided to check the residual amount of materials contained in an opaque container, such as a gas or liquid container, as well as a small LPG storage tank. A transmission system for remote inspection of an LPG storage tank is composed of an LPG storage tank residual amount detecting unit(10); a tank transmitter(20) transmitting information of the residual amount detecting unit; a server modem(30) receiving the data transmitted from the tank transmitter; a user PC(Personal Computer)(40) receiving and displaying the information transmitted from the server modem; and a data server(50) providing the data to the user PC through the internet. The tank transmitter comprises a power processing unit processing power input about a microcomputer into operating power; a sensor inspecting unit inspecting a signal of a sensor; an inspecting unit checking the state of a switcher and the residual gas of a meter; and a modem for wire and wireless telephones.

Description

Signal Generating System for Remote Inspection of a Meter in LPG Storage Tank

1 is a block diagram of a conventional telemetry sensing system electronic circuit.

2 is a block diagram of a wired transmission system according to the present invention.

3 is a block diagram of a CDMA origination system of the present invention.

4 is a block diagram of an origination system of the RF CDMA method of the present invention.

5 is a configuration diagram of a first embodiment of an RF wired system of the present invention.

Figure 6 is a configuration diagram of a second embodiment of the RF wired system of the present invention.

7 is a block diagram of a tank transmitter electronic circuit of the present invention.

8 is a schematic diagram of a CDMA tank transmitter electronic circuit.

9 is an electronic circuit configuration diagram of the RF system.

10 is an exemplary view of a management screen of the present invention.

       <Short description of drawing symbols>

2: multiplexer 5: level detection circuit

10: remaining amount detection unit 20: tank transmitter

22: CDMA transmitter 24: RF-TX transmitter

25: RF-RX receiver 30: server modem

40: subscriber PC 50: data server

60: CDMA base station 80: wireless repeater (repeater)

The present invention relates to a transmission system of the LPG storage tank. More specifically, the LPG gas contained in the small LPG storage tank can be efficiently stored in PCs, mobile phones or PDAs, and the tanks can be efficiently distributed. The outgoing system of a small LPG storage tank.

In general, small LPG storage tanks are being spread and spread to rationalize the distribution of LPG gas and to establish an efficient logistics system. The biggest problem is that it is difficult to know the amount of gas remaining in metal containers due to the nature of LPG.

According to the prior art related to the present invention, Patent Registration No. 0228447 'Fuel Gauge of LPG Tanks for Automobiles' forms a transparent gauge window in the LPG tank, and forms a scale indicating the remaining amount of LPG in% beside the gauge window. It is known to measure the amount of LPG remaining in the tank by looking at the LPG liquid level in the tank pointing through the gauge window.

However, in the case of small LPG storage tanks used in homes or businesses, it is a fact that the remaining amount of LPG gas in many tanks is replaced by the sixth sense or weight. Therefore, it is not possible to accurately determine the remaining amount of LPG tank, there is a problem that can not determine the filling and inventory status for each tank and establish a distribution plan for each tank.

In addition, according to the Patent Publication No. 1998-1081, which is a technology related to the present invention, "the rotation angle position of the rotating body and the remote measuring method of the speed direction", the rotation angle or speed of the rotating body of a computer power meter or a manual meter is measured remotely. The technology to measure the electricity consumption or water consumption is disclosed.

1 is a block diagram of an electronic circuit of a telemetry sensing system illustrating the principle of operation of the patent.

According to FIG. 1, a signal is generated in the oscillator circuit 1 to read the fixed electrode number of the rotating body, and the demultiplexer 2 is sequentially applied to the sensing device 4 to 10 fixed electrodes, and the detected signal is detected by the level. A signal applied from an external lead wire, which is not detected by the circuit 6, is detected by the level detecting circuit 6, which is amplified by the amplifying and pulse generating circuit 7 and counted by the counting circuit 3 The encrypted number to be stored is stored in the memory circuit 8.

However, the conventional patent is a technique applied to the measurement of the rotation angle or the speed of the rotating body of a computer wattmeter or water meter suggests a method of measuring the residual amount of gas in the gas reservoir or there is no solution to the technical problem. have.

The present invention has been made to solve the problems of the prior art, an object of the present invention to provide a storage tank transmission system that can grasp the status of the filling and inventory of small LPG storage tank.

Another object of the present invention is to provide a storage tank transmission system including a transmitter for transmitting information by grasping the remaining amount of the transmitter small LPG storage tank that can be easily used according to the communication method.

Still another object of the present invention is to provide a storage tank transmission system capable of remotely reading a small LPG storage tank as well as a large LPG storage tank, a refrigerant state of a refrigerator vehicle, or domestic natural gas consumption.

The configuration of the transmission system for implementing the object of the present invention is the LPG storage tank residual amount detection unit 10, the tank transmitter 20 for transmitting the remaining information detection unit, and the server modem for receiving the data transmitted from the tank transmitter 30, a subscriber PC (40) for receiving and displaying information from the server modem, and a data server (50) for providing data to the subscriber PC via the Internet. ,
The tank transmitter 20 includes a power processing unit 210 for processing the input power (POWER) centered on the microcomputer 240 as operating power, which is a required power source, a sensor reading unit 220 for reading a signal of a sensor, It is characterized in that the metering unit 230 for reading the state of the state of the switch and the gas residual amount of the meter and the modem 250 for wired and wireless telephones.

The tank transmitter may communicate using any one of a wired telephone network (PSTN), an RF wired system, and a wireless telephone network (CDMA). Management Screen Managed by the User The user's PC is operated through the Internet, and the data reception status can be grasped in real time.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 2 is a configuration diagram of a wired origination system of the present invention, and FIG. 3 is a configuration diagram of a CDMA origination system. Figure 4 is a configuration diagram of the RF CDMA transmission system of the present invention, Figure 5 is a configuration diagram of a first embodiment of the RF wired method of the present invention, Figure 6 is a configuration diagram of a second embodiment of the RF wired method of the present invention. to be. 7 is a block diagram of a tank transmitter electronic circuit of the present invention, FIG. 8 is a configuration diagram of a tank transmitter electronic circuit of a CDMA method, and FIG. 9 is a configuration diagram of an electronic circuit of an RF method. 10 is an exemplary view of a management screen of the present invention.

2 is a block diagram of a wired transmission system according to the present invention. As shown in FIG. 2, the LPG storage tank transmission system of the present invention includes a residual amount detection unit 10, such as a gauge capable of confirming the remaining amount of tank, and a tank transmitter 20 for transmitting information of the remaining amount detection unit 10; A server modem 30 receiving data transmitted from the tank transmitter 20, a subscriber PC 40 receiving and displaying information from the server modem 30, and the subscriber PC 40 using the Internet. It characterized in that it comprises a data server 50 for providing data through.

The subscriber PC 40 can grasp the filling and inventory status for each tank, it is possible to plan and manage the distribution status for each tank based on this.

3 is a block diagram of a CDMA origination system according to the present invention. According to the present invention, when the distance between the LPG tank location and the place where the landline is installed is difficult or difficult to connect by wire, the cable length for transmitting the remaining amount of information in the storage tank is long, so it is difficult to collect the information. Use when it is not easy.

According to FIG. 3, the CDMA transmitter 22 which transmits the information of the remaining amount of the storage tank obtained from the remaining amount detection part 10 of the LPG storage tank requested to the tank residual amount gauge A or B, and the remaining amount detection part 10 of the said LPG storage tank. And a CDMA base station 60 for transmitting signals of the CDMA transmitter 22, a subscriber PC 40 for receiving transmission data via the Internet, and a data server 50. The remaining amount detecting unit 10 of the LPG storage tank uses an analog measuring principle to detect a change in the resistance value of the wire and to grasp the level of the remaining amount in the LPG storage tank proportional thereto. The CDMA transmitter 22 transmits information with a wireless communication signal transmitted from the remaining amount detection unit 10.

4 is a block diagram of an origination system of the RF CDMA method of the present invention.

In the present invention, when the distance between the LPG tank location and the place where the landline is installed is difficult or difficult to connect by wire, it is difficult to collect information because the length of the cable to transfer the remaining amount information of the storage tank is difficult to collect the information, easy to supply power If you do not use it. In addition, it is possible to concentrate the data sent to the tank transmitter 20 to receive the data received from the RF-RX receiver 25, a number of RF-TX transmitters (24).

The present invention is an embodiment in which an RF transmitter and a CDMA transmitter are combined. The configuration of the invention is the detection unit 10 of the LPG storage tank attached to the LPG tank remaining amount gauge A or B, and the RF-TX transmitter 24 for transmitting information of the remaining amount of the storage tank obtained from the remaining amount detection unit 10, RF -An RX receiver 25 and a CDMA transmitter 22 coupled to the CDMA base station 60 for transmitting signals of the CDMA transmitter 22, a subscriber PC 40 for receiving transmission data via the Internet, and the Internet. It consists of a data server 50 to provide data through.

 5 is a configuration diagram of a first embodiment of an RF wired system of the present invention.

It is a communication method combining RF and PSTN. PSTN transmitter can be installed by wire. The communication method is PSTN-MODEM and the size is 120X100X30. The operating conditions are -20 to 60. The power source is the adapter (AC 220V-DC5V).

In this case, if the distance between the LPG tank location and the place where the landline telephone is to be installed is difficult or difficult to connect by wire, it is difficult to collect the information due to the long cable length that transmits the remaining amount of information in the storage tank. If this is not easy to use. In addition, it is possible to concentrate the data sent to the tank transmitter 20 to receive the data received from the RF-RX receiver 25, a number of RF-TX transmitters (24).

An embodiment of the present invention attaches the RF-TX transmitter 24 to the LPG storage tank, and connects the RF-RX receiver 25 and the tank transmitter 20 to a general telephone line (PSTN).

RF-TX transmitter 24 and RF-RX receiver which transmits information on the remaining amount of the storage tank obtained from the remaining amount detecting unit 10, the remaining amount detecting unit 10 of the LPG storage tank A or B requested by the tank remaining gauge A or B (25), the tank transmitter 20 is coupled, the signal of the tank transmitter 20 is a subscriber PC (40) through which the transmission data is received via the Internet through the server modem 30 through the PSTN wired communication network, and It consists of a data server 50.

Figure 6 is a block diagram of a second embodiment of the RF wired system of the present invention.

According to Figure 6, the remaining amount detection unit 10 of the LPG storage tank attached to the tank residual amount gauge A or B, and the RF-TX transmitter 24 for transmitting information of the remaining amount of the storage tank obtained from the remaining amount detection unit 10, The RF-RX receiver 25 and the tank transmitter 20 are coupled, and the signal of the tank transmitter 20 is transmitted to the subscriber PC through the server modem 30 through the PSTN wired communication network via the Internet. 40 and a data server 50 for providing data via the Internet.

In the second embodiment of the RF wired method, a wireless repeater 80 is coupled between the RF-TX transmitter 24, the RF-RX transmitter 25, and the tank transmitter 20.
This case is to be used when the power supply is not easy. If the obstacle or distance between the RF-TX transmitter 24 and the RF-RX receiver 25 is too far to transmit, install and operate the wireless repeater 80. In addition, it is possible to concentrate the data sent to the tank transmitter 20 to receive the data received from the RF-RX receiver 25, a number of RF-TX transmitters (24).

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7 is a block diagram of a tank transmitter electronic circuit of the present invention. Referring to FIG. 7, the tank transmitter 20 includes a power processing unit 210 for processing the power input centered on the microcomputer 240 as an operating power source, which is a necessary power, and a sensor reading unit for reading a signal from a sensor. 220, the meter reading unit 230 for reading the state of the switch and the gas remaining amount of the meter, and the modem 250 for wired and wireless telephones are combined. The sensor reader 220 is provided with a connector (CON) to be electrically connected to the sensor.

When the microcomputer 240 is upgraded in the tank transmitter 20, the program is easily connected to the subscriber PC 40 by using a port that is built in itself. Here, subscriber PC 40 may be a manager PC when the manager uses.

The sensor connected to the sensor reading unit 220 may be installed in the tank with a temperature sensor to sense the temperature around the tank and transmit it to the subscriber PC 40 to prevent the fire in advance. In addition, the sensor is installed in the switching device for connecting a plurality of tanks to detect the transfer state of the switching machine can be transferred to the subscriber PC 40 to replace the empty tank. In addition, the sensor is installed in the gas line connected to the tank can detect the gas leakage and transmit to the subscriber PC 40 to prevent the gas leakage in advance.

The tank transmitter 20 of the present invention provides a transmitter suitable for various purposes to efficiently manage the LPG storage tank and improve productivity based on accurate transmission and reception data. In other words, the tank transmitter 20 is divided into a PSTN transmitter, a CDMA transmitter, and an RF transmitter, and depending on the location of the tank and whether or not the power supply for the telephone is installed, the transmitter is used according to a case. Connect to indicator and use.

8 is a schematic diagram of a CDMA tank transmitter electronic circuit.

In the case of FIG. 8, when the distance between the LPG tank location and the place where the landline is installed is difficult or difficult to connect by wire, it is difficult to collect information due to a long cable length for transmitting information of the remaining amount of the storage tank. Use when power supply is not easy. It connects to the remaining tank gauge through a communication port, which is an EAR-JACK, measures the remaining amount of LPG tank at regular intervals and transmits it through the CDMA module 22.

9 is a configuration diagram of an electronic circuit of an RF method. The frequency band uses 2.4 GHz.

An IC chip 90 which is an RF (Zigbee) is provided. An RF matching circuit portion 91 is provided on one side of the IC chip 90, and a connector 93 is provided on one side of the IC chip 90. An antenna connector 95 is connected to the RF matching circuit unit 91, and a memory 97 is connected to the IC chip 90.

Here, RF (Zigbee) is a structure that can function 4PORT ADC, 16PORT GPIO, 2PORT UARTs. In addition, the RF (Zigbee) features a low power consumption, which is convenient to use when it is difficult to connect the power, and can be used for short-range communication in the field of wireless data networking such as home or office.

10 is a tank capacity, remaining amount (%), receiving date, total remaining amount, tank type, level value for a container of a small LPG storage tank that customers are using by using the subscriber PC 40 connected to the origination system of the present invention. ERP can be known using the gas computerization program. In addition, the lower part of the management screen can grasp the signal reception history of the tank transmitter 20 and the tank capacity and level value of the customer by the information of the tank transmitter 20.

After installing the transmitter in the field or before installing it, you can register the data related to the transmitter and check whether the signal transmission and reception is normal. You can use the administrator PC connected to the Internet or use the mobile phone or PDA in the field.

According to the transmitting device of the present invention, it can be widely used to grasp the residual amount of the measured object contained in an opaque container such as a gas container and a liquid container as well as a small LPG storage tank. The effect of the present invention is to build a small LPG storage tank transmission system can be efficiently linked to the ERP work management.

In addition, the company can strengthen its competitiveness by reducing costs such as logistics costs and differentiating customer service. In particular, since the remaining gas in the small LPG tank can be accurately and remotely identified, the LPG tank can be transported quickly and accurately.
In addition, through the continuous request and response between the LPG tank, the transmitter and the server, it is possible to continuously check the remaining amount, and by applying the confirmed information to the logistics management, it is possible to reduce the logistics costs by enabling the planned delivery.

Claims (7)

delete LPG storage tank remaining amount detection unit 10, a tank transmitter 20 for transmitting the remaining amount detection unit information, a server modem 30 for receiving data transmitted from the tank transmitter and receiving information from the server modem In the LPG storage tank transmission system comprising a subscriber PC 40 to display and a data server 50 to provide data to the subscriber PC via the Internet, The tank transmitter 20 includes a power processing unit 210 for processing the input power (POWER) centered on the microcomputer 240 as operating power, which is a required power source, a sensor reading unit 220 for reading a signal of a sensor, LPG storage tank transmission system, characterized in that the metering unit 230 for reading the state of the switching state and the gas residual amount of the meter and the modem 250 for wired and wireless telephones. delete delete delete LPG storage tank remaining amount detection unit 10, a tank transmitter 20 for transmitting the remaining amount detection unit information, a server modem 30 for receiving data transmitted from the tank transmitter, and information from the server modem 30 In the LPG storage tank transmission system comprising a subscriber PC (40) for receiving and displaying the data, and a data server (50) for providing data to the subscriber PC (40) through the Internet, The RF-TX transmitter 24, the RF-RX receiver 25, and the CDMA transmitter 22, which transmit information on the remaining amount of the storage tank obtained from the remaining amount detection unit 10, are combined, and the signal of the CDMA transmitter 22 is combined. And a subscriber PC (40) for receiving and displaying information from the server modem (30), and a data server (50) for providing data over the Internet. , LPG storage tank transmission system, characterized in that the centralized data sent to the tank transmitter 20 by concentrating data to a single RF-RX receiver 25, RF-TX transmitters 24. According to claim 6, The RF-RX transmitter 24 is connected to a temperature sensor installed in the LPG storage tank can sense the temperature around the LPG storage tank, and a sensor installed in the switching device for connecting a plurality of LPG storage tanks LPG storage tank outgoing system characterized in that it can detect the LPG storage tank emptied and connected to the sensor installed in the gas line connected to the LPG storage tank to detect the gas leakage.

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