CN203732116U - Numerical code type gas meter - Google Patents
Numerical code type gas meter Download PDFInfo
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- CN203732116U CN203732116U CN201320846719.8U CN201320846719U CN203732116U CN 203732116 U CN203732116 U CN 203732116U CN 201320846719 U CN201320846719 U CN 201320846719U CN 203732116 U CN203732116 U CN 203732116U
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- gas flow
- meter
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- digital
- type gas
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Abstract
Provided is a numerical code type gas meter. The numerical code type gas meter comprises a basic meter and a control device. The basic meter comprises an electromechanical valve and a gas flow sensor. The control device comprises a microcontroller, wherein the microcontroller is electrically connected with a power management module, a peripheral gas flow acquisition circuit, a key input keyboard, a displayer, a valve control module and an alarm control module, the valve control module is electrically connected with the electromechanical valve of the basic meter, and the gas flow acquisition circuit is electrically connected with the gas flow sensor of the basic meter. The numerical code type gas meter is simple in structure and low in manufacturing cost; the mode that a user purchases an eight-digit numerical code to carry out the exchange with prepayment data is adopted, and therefore the problem that an IC card prepayment product is prone to attack and pollution is solved; safety is high, and the definition of the numerical code contains both the coding definition and the cryptography definition, namely, a computer carries out encoding according to an encryption rule; the defects that error cheating loopholes and fee default exist, an exposed IC card base on a shell of an IC card prepayment meter is prone to damage, attack and pollution, and an IC card can be easily decoded and copied can be overcome.
Description
Technical field
The utility model relates to a kind of measuring apparatus, especially relates to a kind of digital-code type gas meter, flow meter.
Background technology
Existing gas meter, flow meter is mostly mechanical type count table, manual metering charge, and required personnel are many, and labour intensity is large, and wage cost is high, and error cheating happens occasionally, and drags phenomenon of defaulting serious, causes heavy economic losses to water supply, gas unit.
IC-card prepayment diaphragm gas meter is being carried out by some units and resident family now, adopts IC-card as information carrier, efficiently solves and drags phenomenon of defaulting, but owing to exposing IC-card seated connection mouth on housing, make controller be subject to Subversive attack, vulnerable to pollution is damaged simultaneously, and serviceable life is not long.Because the logical encrypt of IC-card own is not strong, be easily decrypted and copy in addition, poor reliability, exists managerial leak.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, and provides that a kind of accurate measurement, reliable operation, anti-attack, antijamming capability are strong, the digital-code type gas meter, flow meter of data security.
The utility model solves the technical scheme that its technical matters adopts, and a kind of digital-code type gas meter, flow meter, comprises base table and control device, and described base table comprises electromechanical valve and gas flow sensor; Control device comprises microcontroller, and described microcontroller is electrically connected with gas flow Acquisition Circuit, key-press input keyboard, display, valve control module, the alarm control module of power management module, periphery respectively; Described valve control module is electrically connected with base table electromechanical valve, and described gas flow Acquisition Circuit is connected with base table gas flow sensor electrical.
Further, described gas flow sensor comprises gas flow rate sensing unit, AD conversion unit and main control unit;
Described gas flow rate sensing unit, for adopting silicon wafer diaphragm mode that gas flow rate is converted to voltage signal;
Described AD conversion unit, is connected with gas flow rate sensing unit, for gathering the voltage signal of gas flow rate sensing unit conversion, and this voltage signal is carried out to analog to digital conversion;
Described main control unit, is connected with AD conversion unit, for according to the voltage signal reduction gas flow rate after AD conversion unit conversion, and according to the gas flow rate after reduction and voltage signal acquisition interval time, obtains accumulative total gas flow.
Further, described microcontroller is central processing unit, adopts the MSP430F413 of the Texas Instruments series that carries storage flash.
Further, the electric wire of described valve control module by 2 by-pass valve control switch motions is connected with base table electromechanical valve for put in place the electric wire of judgement of switch with 3.
Further, described gas flow Acquisition Circuit is connected with the gas flow sensor electrical of base table with 2 signal wires by 1 public end line.
Further, described display is the liquid crystal display directly being driven by central processing unit, for the relevant information of display controller.
Further, described key-press input keyboard is made pad button by PCB, is connected combination with the conductive rubber button of base table.
Further, described power management module circuit comprises U4, U6, and described U6 is RH5RL30AA, the voltage stabilization of powering to single-chip microcomputer is at 3.0V; U4 is R3111H281C voltage checking chip, and when the cell voltage of power supply is during lower than 2.8V, 1 pin of U4 will output low level, and microcontroller can detect the variation of this level, makes corresponding low pressure processing.
The arabic numeral code representative of multidigit accidental enciphering for the tolerance that user buys, and by user, these multiple numerals are inputed to microcontroller by key-press input keyboard, microcontroller identification, confirmation, complete digital-code encryption and deciphering, send valve control signal to valve control module, valve control module control base table valve opening or shutdown signal according to tolerance quota; The base table gas flow sensor signal of gas flow Acquisition Circuit collection carries microcontroller to carry out Auto-counting, microcontroller carries out man-machine conversation by key-press input keyboard, microcontroller also outputs signal to display, shown parameter and the microcontroller current state of input by display, microcontroller is also by data message storage, and data are not lost.
Compared with prior art, the utility model is simple in structure, low cost of manufacture; Adopt user to buy the mode of eight digit number code exchange prepaid data, avoid the vulnerable of IC-card pre-payment product existence, vulnerable to pollution problem; The double meaning safe, number contains coding and password, is encoded according to encryption rule by computing machine; Can avoid error cheating leak and be in arrears with on the housing of expense, IC-card prepaid table, exposing IC-card seat and being easily damaged and attacking pollution, IC-card and be easily decrypted and the drawback such as copy.
Brief description of the drawings
Fig. 1 is the utility model one structural representation;
Fig. 2 is the structural representation of gas flow sensor 9 shown in Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment
With reference to accompanying drawing, the present embodiment comprises base table and control device, and base table comprises electromechanical valve 8 and gas flow sensor 9; Control device comprises microcontroller 1, and microcontroller 1 is electrically connected with gas flow Acquisition Circuit 7, key-press input keyboard 3, display 2, valve control module 4, the alarm control module 6 of power management module 5, periphery respectively; Valve control module 4 is electrically connected with base table electromechanical valve 8, and gas flow Acquisition Circuit 7 is electrically connected with base table gas flow sensor 9.
Gas flow sensor 9 comprises gas flow rate sensing unit 9-1, AD conversion unit 9-2 and main control unit 9-3;
Gas flow rate sensing unit 9-1, for adopting silicon wafer diaphragm mode that gas flow rate is converted to voltage signal;
AD conversion unit 9-2,9-1 is connected with gas flow rate sensing unit, for gathering the voltage signal of gas flow rate sensing unit conversion, and this voltage signal is carried out to analog to digital conversion;
Main control unit 9-3, is connected with AD conversion unit, for according to the voltage signal reduction gas flow rate after AD conversion unit conversion, and according to the gas flow rate after reduction and voltage signal acquisition interval time, obtains accumulative total gas flow.
Microcontroller 1 is central processing unit, adopts the MSP430F413 of the Texas Instruments series that carries storage flash.
The electric wire of valve control module 4 by two by-pass valve control switch motions is connected with base table electromechanical valve for put in place the electric wire of judgement of switch with 3.
Gas flow Acquisition Circuit 7 is electrically connected with the gas flow sensor 9 of base table by 1 public end line and two signal wires.
Display 2 is the liquid crystal display directly being driven by central processing unit, for the relevant information of display controller.
Key-press input keyboard 3 is made pad button by PCB, is connected combination with the conductive rubber button of base table.
Power circuit module 5 comprises U4, U6, and described U6 is RH5RL30AA, the voltage stabilization of powering to single-chip microcomputer is at 3.0V; U4 is R3111H281C voltage checking chip, and when the cell voltage of power supply is during lower than 2.8V, 1 pin of U4 will output low level, and microcontroller 1 can detect the variation of this level, makes corresponding low pressure processing.
The arabic numeral code representative of eight accidental encipherings for the gas quantity that user buys, these are to comprise controller table number, buy number of times, purchase volume, random number, returned to many information such as digital last time, the various control code generating through special computing, and by user oneself, eight digit number word is input in microcontroller 1 by key-press input keyboard 3, after microcontroller 1 recognition and verification is correct and return to original purchase volume data, generate one simultaneously and return to number, as the return code of buying next time, be stored in microcontroller 1, in microcontroller 1, receive and be arranged on the flow signal that in metering base table, gas flow sensor 9 is sent here, and according to flow signal the recovered data of examining and making cuts, in the time that data are examined and made cuts as a certain value (this data value can be set), microcontroller 1 provides alerting signal to alarm control module 6, in the time that data are examined and made cuts as " 0 ", system is cut off user's air supply channel automatically, thereby realizes pre-payment control, and when user's transmission of data again, and the data of recovering are greater than at 1 o'clock, the air supply channel of the automatic connecting subscribers participating of system.
Claims (8)
1. a digital-code type gas meter, flow meter, comprises base table and control device, it is characterized in that, described base table comprises electromechanical valve and gas flow sensor; Control device comprises microcontroller, and described microcontroller is electrically connected with gas flow Acquisition Circuit, key-press input keyboard, display, valve control module, the alarm control module of power management module, periphery respectively; Described valve control module is electrically connected with base table electromechanical valve, and described gas flow Acquisition Circuit is connected with base table gas flow sensor electrical.
2. digital-code type gas meter, flow meter according to claim 1, is characterized in that, described gas flow sensor comprises gas flow rate sensing unit, AD conversion unit and main control unit;
Described gas flow rate sensing unit, for adopting silicon wafer diaphragm mode that gas flow rate is converted to voltage signal;
Described AD conversion unit, is connected with gas flow rate sensing unit, for gathering the voltage signal of gas flow rate sensing unit conversion, and this voltage signal is carried out to analog to digital conversion;
Described main control unit, is connected with AD conversion unit, for according to the voltage signal reduction gas flow rate after AD conversion unit conversion, and according to the gas flow rate after reduction and voltage signal acquisition interval time, obtains accumulative total gas flow.
3. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, described microcontroller is central processing unit, adopts the MSP430F413 of the Texas Instruments series that carries storage flash.
4. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, the electric wire of described valve control module by 2 by-pass valve control switch motions is connected with base table electromechanical valve for put in place the electric wire of judgement of switch with 3.
5. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, described gas flow Acquisition Circuit is connected with base table gas flow sensor electrical with 2 signal wires by 1 public end line.
6. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, described display is the liquid crystal display directly being driven by central processing unit, for the relevant information of display controller.
7. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, described key-press input keyboard is made pad button by PCB, is connected combination with the conductive rubber button of base table.
8. digital-code type gas meter, flow meter according to claim 1 and 2, is characterized in that, described power management module circuit comprises U4, U6, and described U6 is RH5RL30AA, the voltage stabilization of powering to single-chip microcomputer is at 3.0V; U4 is R3111H281C voltage checking chip, and when the cell voltage of power supply is during lower than 2.8V, 1 pin of U4 will output low level, and microcontroller can detect the variation of this level, makes corresponding low pressure processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320846719.8U CN203732116U (en) | 2013-12-20 | 2013-12-20 | Numerical code type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320846719.8U CN203732116U (en) | 2013-12-20 | 2013-12-20 | Numerical code type gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732116U true CN203732116U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320846719.8U Expired - Fee Related CN203732116U (en) | 2013-12-20 | 2013-12-20 | Numerical code type gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258746A (en) * | 2015-10-30 | 2016-01-20 | 四川泰鹏测控仪表科技有限公司 | Gas prestorage type intelligent gas meter |
| CN110864748A (en) * | 2019-12-17 | 2020-03-06 | 成都前锋电子仪器有限责任公司 | Gas pipeline flow monitoring device |
-
2013
- 2013-12-20 CN CN201320846719.8U patent/CN203732116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258746A (en) * | 2015-10-30 | 2016-01-20 | 四川泰鹏测控仪表科技有限公司 | Gas prestorage type intelligent gas meter |
| CN110864748A (en) * | 2019-12-17 | 2020-03-06 | 成都前锋电子仪器有限责任公司 | Gas pipeline flow monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUNAN SANYI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUNAN SANYI DIGITAL SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20140715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140715 Address after: 413100 Yuanjiang City, Hunan Province Economic Development Zone, Yiyang Patentee after: HUNAN SANYI TECHNOLOGY CO., LTD. Address before: 413100 civilized road, Yuanjiang Economic Development Zone, Yiyang, Hunan Patentee before: Hunan San Yi Digital Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20191220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |