CN212809437U - GPRS gas meter - Google Patents

Abstract

The utility model discloses a GPRS gas meter, including watchcase and the control circuit of setting in the watchcase, control circuit further includes GPRS circuit, gas volume reading circuit, power management circuit, liquid crystal display and singlechip. Utilize the GPRS circuit to let intelligent gas strapping table can wireless internet access, utilize cloud technology again to send gas end user's use tolerance and intelligent gas strapping table's operating condition etc. to the high in the clouds to and store gas company management center and draw back the gas strapping table and store in the user gas purchasing information, the timing information etc. of high in the clouds to this intelligent gas strapping table. The gas company management center carries out data exchange through cloud and intelligent gas strapping table and just can manage its gas user of every family for gas company can conveniently know each gas user's the gas condition and the operating condition of intelligent gas strapping table, has reduced administrative cost, has improved the managerial efficiency.

Description

GPRS gas meter

Technical Field

The utility model relates to a gas measurement technical field, concretely relates to GPRS gas measurement table.

Background

The existing intelligent gas meter generally adopts IC card value-charging prepayment or meter-reading fee-deducting mode through a small wireless communication handset, and the modes do not bring convenience to gas use terminal users and gas companies. For example, the IC card prepaid gas using terminal user needs to take the IC card to a gas purchasing point set by the gas company to recharge when the gas amount of the gas meter is about to be used up, otherwise the gas is stopped. In the meter reading and fee deduction mode of the small wireless communication handset, a worker is dispatched to a gas company at intervals and takes the handset to collect information such as gas consumption of a gas using terminal user, and then the information is returned to a management system of the company, so that the management cost of the gas company is increased, and errors are easy to occur in collected data.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve is the inconvenient problem of current gas strapping table, provides a GPRS gas strapping table.

In order to solve the above problems, the utility model discloses a realize through following technical scheme:

a GPRS gas meter comprises a meter shell and a control circuit arranged in the meter shell; the control circuit further comprises a gas quantity reading circuit, a power supply management circuit, a liquid crystal display screen and a single chip microcomputer; the single chip microcomputer is connected with the gas quantity reading circuit, the power supply management circuit and the liquid crystal display screen; the difference is that the control circuit further comprises a GPRS circuit; the GPRS circuit consists of a GPRS data transmission communication module U5, a voltage stabilizing IC module U4, resistors R4-R5 and filter capacitors C17-C18; the VIN end of the voltage-stabilizing IC module U4 is connected with a power supply VCC; the EN end of the voltage-stabilizing IC module U4 is connected with the control end of the singlechip; the VOUT end of the voltage-stabilizing IC module U4 is connected with one end of a resistor R4, one ends of filter capacitors C17 and C18 and the VBAT end of the GPRS data transmission communication module U5; the other end of the resistor R4 is connected with the ADJ end of the voltage-stabilizing IC module U4 and one end of the resistor R5, the other end of the resistor R5, the other ends of the filter capacitors C17 and C18 and the GND end of the GPRS data transmission communication module U5 are grounded; the RXD end and the TXD end of the GPRS data transmission communication module U5 are respectively connected with the RXD end and the TXD end of the single chip microcomputer.

In the above scheme, the GPRS data transmission communication module U5 is a GPRS data transmission communication module with a model number of GW 500-G36M.

In the above solution, the voltage stabilizing IC module U4 is a voltage stabilizing IC module with a model number of MIC 29302.

Compared with the prior art, the utility model discloses utilize GPRS data transmission communication technology to make intelligent gas strapping table can wireless internet, reuse cloud to use gas end user's use tolerance and intelligent gas strapping table's information such as operating condition to send the high in the clouds to and store gas company management center in the user gas purchasing information, the timing information etc. of high in the clouds to this intelligent gas strapping table and draw back the gas strapping table and store. The gas company management center carries out data exchange through cloud and intelligent gas strapping table and just can manage its gas user of every family for gas company can conveniently know each gas user's the gas condition and the operating condition of intelligent gas strapping table, has reduced administrative cost, has improved the managerial efficiency.

Drawings

Fig. 1 is a schematic diagram of a control circuit of a GPRS gas meter.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, a GPRS gas meter comprises a meter case and a control circuit arranged in the meter case. The control circuit comprises a gas quantity reading circuit, a GPRS circuit, a power management circuit, a liquid crystal display screen and a single chip microcomputer. The power management circuit provides working power supply for the whole control circuit. The single chip microcomputer is the brain of the GPRS gas meter control circuit and is connected with other parts, namely a gas quantity reading circuit, a GPRS circuit, a power supply management circuit and a liquid crystal display screen. The utility model discloses an added the GPRS circuit in original intelligent gas strapping table for intelligent gas strapping table can realize the wireless online of GPRS, utilizes the cloud technique like this, sends terminal user's the use tolerance and the operating condition of gas strapping table to the high in the clouds, and stores gas company management center and draws back intelligent gas strapping table and store in the user gas information, the timing information etc. of buying to this intelligent gas strapping table of high in the clouds.

The GPRS circuit consists of a GPRS data transmission communication module U5, a voltage stabilizing IC module U4, resistors R4-R5 and filter capacitors C17-C18; the VIN terminal (No. 2 pin) of the voltage-stabilizing IC module U4 is connected with a power supply VCC. The EN end (the 1 st pin) of the voltage-stabilizing IC module U4 is connected with the control end (the 59 th pin) of the single chip microcomputer; the VOUT terminal (pin 4) of the voltage-stabilizing IC module U4 is connected to one terminal of the resistor R4, one terminals of the filter capacitors C17 and C18, and the VBAT terminal of the GPRS data transmission communication module U5; the other end of the resistor R4 is connected with the ADJ end (the 5 th pin) of the voltage stabilizing IC module U4 and one end of the resistor R5, the other end of the resistor R5, the other ends of the filter capacitors C17 and C18 and the GND end (the 3 rd pin) of the GPRS data transmission communication module U5 are grounded; the UART port of the GPRS data transmission communication module U5, namely an RXD end (16 th pin) and a TXD end (17 th pin) are respectively connected with the UART port of the singlechip, namely the RXD end (60 th pin) and the TXD end (61 th pin).

In this embodiment, the GPRS data communication module U5 is a GPRS data communication module with model number GW 500-G36M. The single chip microcomputer controls a GPRS data transmission communication module U5 with the model number of GW500-G36M to work through a UART port of the single chip microcomputer, and sends data to a cloud end and receives the data of the cloud end through the single chip microcomputer. The voltage stabilizing IC module U4 is a high-power low-voltage difference microampere-level static working current output adjustable voltage stabilizing IC module with the model number of MIC 29302. The voltage stabilizing IC module, the resistors R4-R5 and the filter capacitors C17-C18 form a voltage stabilizing power supply outputting 3V8 and provide working voltage for the GPRS data transmission communication module U5. Resistors R4 and R5 are used to regulate this regulated power supply output voltage to 3V 8. The intelligent gas meter control circuit is provided with working voltage by the dry battery, the energy storage of the dry battery is small, and in order to enable the intelligent gas meter control circuit to work for a long time (generally requiring 1-2 years) without replacing the battery, the static working current of the intelligent gas meter control circuit needs to be less than 40 microamperes. Therefore, when the GPRS data transmission communication is not carried out, the output of the voltage stabilizing IC module is required to be 0V, and the 1 st pin of the MIC29302 can be controlled to realize the output. The 1 st pin of the MIC29302 is connected with the 59 th pin of the single chip microcomputer, the 59 th pin of the single chip microcomputer is an output pin, when GPRS data transmission communication is needed, the 59 th pin of the single chip microcomputer outputs high level to be added to the 1 st pin of the MIC29302, the MIC29302 outputs 3V8 voltage at the 4 th pin of the MIC29302 to be supplied to a GPRS data transmission communication circuit to enable the MIC29302 to start working, after the working is completed, the 59 th pin of the single chip microcomputer outputs low level to be added to the 1 st pin of the MIC29302, and the MIC29302 does not output voltage at the 4 th pin. The output of the voltage-stabilized power supply can be controlled by a singlechip to supply working voltage for the GPRS data transmission communication circuit when GPRS data transmission communication is required, and the static working current of the gas meter is ensured to be less than 40 microamperes.

It should be noted that, although the above-mentioned embodiments of the present invention are illustrative, the present invention is not limited thereto, and therefore, the present invention is not limited to the above-mentioned embodiments. Other embodiments, which can be made by those skilled in the art in light of the teachings of the present invention, are considered to be within the scope of the present invention without departing from the principles thereof.

Claims (3)

1. A GPRS gas meter comprises a meter shell and a control circuit arranged in the meter shell; the control circuit further comprises a gas quantity reading circuit, a power supply management circuit, a liquid crystal display screen and a single chip microcomputer; the control circuit is characterized by further comprising a GPRS circuit; the GPRS circuit consists of a GPRS data transmission communication module U5, a voltage stabilizing IC module U4, resistors R4-R5 and filter capacitors C17-C18; the VIN end of the voltage-stabilizing IC module U4 is connected with a power supply VCC; the EN end of the voltage-stabilizing IC module U4 is connected with the control end of the singlechip; the VOUT end of the voltage-stabilizing IC module U4 is connected with one end of a resistor R4, one ends of filter capacitors C17 and C18 and the VBAT end of the GPRS data transmission communication module U5; the other end of the resistor R4 is connected with the ADJ end of the voltage-stabilizing IC module U4 and one end of the resistor R5, the other end of the resistor R5, the other ends of the filter capacitors C17 and C18 and the GND end of the GPRS data transmission communication module U5 are grounded; the RXD end and the TXD end of the GPRS data transmission communication module U5 are respectively connected with the RXD end and the TXD end of the single chip microcomputer.

2. A GPRS gas meter according to claim 1, wherein the GPRS data communication module U5 is a GPRS data communication module with model number GW 500-G36M.

3. A GPRS gas meter according to claim 1, wherein said regulator IC module U4 is a regulator IC module having the model number MIC 29302.

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