CN1828234A - Low-power consumption GPRS data collection terminal for water gauge flow analysis and settlement - Google Patents
Low-power consumption GPRS data collection terminal for water gauge flow analysis and settlement Download PDFInfo
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- CN1828234A CN1828234A CN 200510042131 CN200510042131A CN1828234A CN 1828234 A CN1828234 A CN 1828234A CN 200510042131 CN200510042131 CN 200510042131 CN 200510042131 A CN200510042131 A CN 200510042131A CN 1828234 A CN1828234 A CN 1828234A
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Abstract
The disclosed terminal comprises: a power, a CPU with 6 8-bit I/O ports connected with RAM ports directly, a sample sensor, a sample filter circuit, a data RAM, a GPRS module, a power switch and control circuit, and a serial level conversion RS232 circuit. During the design, with CPU on sleep state for exterior signal interruption or timer interruption, the CPU can store the accumulated flow data of different time interval into exterior RAM to calculate the average flow value and the consumption per day, month and year; the CPU comprises another two serial ports to connect the communication port of GPRS module and communicate with main computer by the level conversion circuit respectively. Besides, the long-lived Li cell can continual work for years.
Description
Technical field
The present invention relates to the intelligence control system of a kind of data acquisition and wireless data remote transmission, be a kind of low-power consumption GPRS data collection terminal that can be used for water gauge flow analysis and clearing specifically, can be used for the long-range pipe network monitoring and the water Automated Clearing House system of Running-water Company.
Background technology
Continuous progress along with social development and science and technology, and the improving constantly of service awareness, public municipal cause realizes networking, the cry of intelligent management is more and more higher, wherein along with water expansion that Every household has an ammeter and popularization, improve the intelligent management level of water, strengthen the monitoring of pipe network, the labour intensity and the working time that reduce the meter reading personnel are Running-water Company's future development and the inevitable choice that realizes intelligent management, for this reason, existing scientific and technical personnel in the industry release a series of intelligence control systems, but it have a how smoothly teletransmission of data, and the terminal device problem of how to power at the scene is not because they are low power dissipation design basically, the system terminal power consumption is big, want outer power supply to work lastingly, cause the product poor practicability, and it is bigger to promote difficulty.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby provide a kind of low-power consumption GPRS data collection terminal that is used for water gauge flow analysis and clearing, long-range flow data collector, watering law analysis, water consumption clearing and the water abnormal alarm etc. that can be used for water meter (summary table), it is little to have low-power consumption, long-life, reading error, practical and convenient, characteristics such as control reliability height.
The present invention realizes with following technical scheme: this GPRS data collection station circuit comprises power supply, central processing unit (CPU), sampling sensor (circuit), sampling filter circuit (RC filtering circuit), it is characterized in that this terminating circuit also comprises data-carrier store (can be RAM or Flash), the GPRS module, circuit such as power supply (switching) control circuit and serial ports level conversion RS232 constitute, terminal is adopted all modularizations and low power dissipation design, wherein CPU is provided with 68 I/O ports, and directly be connected with the port of data-carrier store (as adopting RAM), the signal output part of sampling sensor is connected to the input end of CPU by the output terminal of sampling filter (RC filtering) circuit, during design, allow CPU be in sleep state and wait for that external signal is interrupted or timer interrupts, that is: when producing pulse, water meter can trigger the CPU external interrupt, CPU can judge whether to effective impulse and counts (being that CPU enters duty) by (software), the pulse cumulative amount is stored in the external data memory (as RAM), simultaneously CPU also can by time interval (as: 1～60 minute) of setting with the integrated flow data storage of day part in external data memory (as RAM), day part data by storage, can not only calculate the average discharge of day part, also can accurately calculate the day of water meter, the Month And Year consumption, and via the serial ports of CPU by level shifting circuit and host communication, CPU also is provided with two serial ports, one of them serial ports (by string line and control line) is connected to the communication port of GPRS module through tri-state gate circuit, and can when communication, connect (connection), cut off during not communication and connect (allowing this serial ports when not working, enter holding state), another serial ports is connected with level conversion (device) circuit RS232 port, and by this level shifting circuit and host communication, two serial ports will enter holding state automatically when not having communication (this moment, this part working current was very little, less than 1 μ A (microampere), the signal output port of described CPU is connected with the power supply control switching circuit, the power supply control switching circuit is connected to the port of GPRS module, and CPU can open or cut off power supply to the GPRS module by the power supply control switching circuit according to need of work.
In technical solution of the present invention, the terminating circuit of described each modular design is owing to adopt low power dissipation design, (this moment, the GPRS module dissipation was zero to CPU cutting off power supply to the GPRS module by the power supply control switching circuit usually, its standby current is less than 1 microampere), when wanting data communication, CPU can open the power supply (electric current is less than 200 microamperes during work) of GPRS module again, when finishing, data communication just disconnects the power supply of GPRS module immediately, therefore, the power supply that terminal of the present invention disposed can be to adopt a joint or the above lithium battery of a joint as power supply (getting final product as an available joint or two joint long-life 3.6V lithium battery power supplies) and need not be with the mains-supplied of outside 220V.
Compared with the prior art, the invention has the beneficial effects as follows: can be accurate, reliably, stably realize the teletransmission of data on flows (or pressure data), because the present invention combines the product that low-power consumption and GPRS wireless communication technique design, can adopt the long-life lithium battery power supply, when this terminal only gets final product continuous working several years (about as 5 years) with a joint lithium battery power supply, need not external power source, thoroughly solved the on-the-spot problem of introducing the power supply difficulty of each tame constituent parts, practicality is very remarkable, the number of copying that can be used for large-diameter water meter (summary table), watering law is analyzed, purposes such as flow analysis and water abnormal alarm.
Description of drawings
Fig. 1 is the schematic block circuit diagram of this bright GPRS data collection station.
Embodiment
With reference to accompanying drawing as can be known, at GPRS terminating circuit of the present invention is to adopt modular design, it comprises: 1～CPU processing unit, 2～data-carrier store (available parallelism or serial non-volatile ram), 3～GPRS module, 4～tri-state gate circuit, 5～sampling sensing circuit (device), 6～filtering circuit (RC wave filter), 7～RS232 serial ports level shifting circuit, 8～power supply (being the 3.6V lithium battery), 9～mu balanced circuit (LDO), compositions such as 10～power supply control switching circuit, its concrete annexation as previously mentioned.In terminating machine of the present invention, described CPU model can adopt the MSP430F147 of T1, data-carrier store available parallelism or serial non-volatile ram, its model can adopt the FM18L08 integrated package, level conversion (device) circuit can adopt the MAX3221 integrated package, multiple duty characteristic according to CPU, under idle condition, this terminating circuit allows CPU enter sleep state when design and waits for external interrupt (or timer interruption), this moment, standby current was less than 1 μ A, the outside has signal interruption to trigger will to wake CPU up and enters duty, and this moment, its working current was less than 200 μ A.When being used for water gauge flow analysis automatic data logging and clearing, its circuit control principle process brief introduction is as follows: the sampling sensor that constitutes acquisition module converts the water meter counting pulse signal digital signal level to and triggers the CPU external interrupt by the RC filtering circuit, CPU judges whether to effective impulse and counts, the pulse cumulative amount is stored in the outside non-volatile ram as memory module, described CPU has 68 I/O ports, so just be easy to the outside parallel RAM of directly expansion, the FM18L08 non-volatile ram has 32kbyte memory capacity, the power down data can be preserved 20 years, and stand-by power consumption is less than 10 μ A.CPU by time interval (1～60 minute) of setting with the integrated flow data storage in external RAM, can deposit 45 days data on flows at interval in 15 minutes.By the time segment data of storage, can not only calculate the average discharge of day part, also can accurately calculate day, Month And Year consumption, and can regularly send the integrated flow data to the Host Administration system by GPRS network according to setting-up time.Model is that the CPU of MSP430F147 also is provided with two serial ports, and a serial ports is by the MAX3221 level conversion, and (by the RS232 port) is responsible for and host communication.When serial ports was free of attachment to main frame, the MAX3221 standby current had only 1uA.The another one serial ports is connected to GPRS module communication mouth by triple gate, can connect connection during communication, cuts off during not communication to connect, and at this moment this serial ports is not worked yet and entered holding state.Because GPRS module working current is about 300mA, so CPU passes through the power supply of power supply control switching circuit cut-out to the GPRS module in the usual time, the GPRS module dissipation that makes this moment is zero.When wanting data communication, CPU opens the power supply of GPRS module again, just disconnects the power supply of GPRS module immediately when data communication finishes.Terminal works voltage mainly divides two parts, and wherein the power supply of GPRS module is to be provided through export behind the control switching circuit by lithium battery, and the power supply of other circuit then passes through voltage stabilizing (device) circuit LDO voltage stabilizing by lithium battery and exports behind the 3.0V and provide.Power consumption calculation: during holding state, Overall Power Consumption is less than 15 μ A, when outside or timing interrupt response is handled, Overall Power Consumption is less than 400 μ A, and the interrupt routine processing time, power consumption was at 400 μ A in average 1 second less than 1 millisecond, working time can be above 2 milliseconds, being in the holding state power consumption excess time is 15 μ A, and except GPRS, the battery capacity that terminal works needed in 5 years will be less than 691mAH like this.GPRS data regularly communication cycle can be used software set, such as one day or week transmission one secondary data.This terminal adopts the disposable lithium cell of 6000mAH capacity, if data transmitting period is not less than one day, but then continuous working 5 years.This terminal can regularly be sent to main website administrative center to the data of storage by GPRS automatically according to the time of setting, and has passed data terminal and will close the working power of GPRS module automatically, has so both realized data remote, has saved the energy and cost again.
This terminal hardware is technical grade design, operating temperature range-30 ℃～+ 80 ℃, and the product waterproofing design, the classification of waterproof height, terminal can be installed in the hole together with summary table, and product can stable operation under rugged surroundings.Other important technological parameters of the present invention are as follows: classification of waterproof: IP65, working power: 3.6V lithium battery, working current: standby≤15 μ A, sampling work≤400 μ A, GPRS communication≤300mA, working time: one day transmission one secondary data, battery can use 5 years, sampling precision: reading error＜0.1 ‰, clock accuracy: 1 day error＜1 second, the sampling period is provided with: 4 sampling storing time intervals (can by software set), memory data output: 32Kbyte, deposited flow data in per 15 minutes, and can store working temperature 45 days: one 30～+ 80 ℃.
Claims (3)
1, a kind of low-power consumption GPRS data collection terminal that is used for water gauge flow analysis and clearing, this terminating circuit comprises power supply, central processing unit (CPU), sampling sensor, sampling filter circuit (RC filtering circuit), it is characterized in that this terminating circuit also comprises data-carrier store (RAM), the GPRS module, power supply control switching circuit and serial ports level conversion RS232 circuit constitute, terminal adopts modularization and low power dissipation design, wherein CPU is provided with 68 I/O ports, and directly be connected with the port of data-carrier store (RAM), the signal output part of sampling sensor is connected to the input end of CPU by the output terminal of sampling filter (RC filtering) circuit, during design, allow CPU be in sleep state and wait for that external signal is interrupted or timer interrupts, when producing pulse, water meter can trigger the CPU external interrupt, CPU can judge whether to effective impulse and count (being that CPU enters duty), the pulse cumulative amount is stored in the external data memory (RAM), simultaneously CPU also can by time interval of setting with the integrated flow data storage of day part in external data memory (RAM), day part data by storage, can not only calculate the average discharge of day part, also can accurately calculate the day of water meter, the Month And Year consumption, and via the serial ports of CPU by level shifting circuit and host communication, CPU also is provided with two serial ports, one of them serial ports is connected to the communication port of GPRS module through tri-state gate circuit, and can when communication, connect (connection), cutting off during not communication to connect allows this serial ports enter holding state when not working, another serial ports is connected with serial ports level conversion RS232 port, and by this level shifting circuit and host communication, two serial ports will not enter holding state automatically when having communication, the signal output port of described CPU is connected with the power supply control switching circuit, the power supply control switching circuit is connected to the port of GPRS module, and CPU can open or cut off power supply to the GPRS module by the power supply control switching circuit according to need of work.
2, low-power consumption GPRS data collection terminal according to claim 1 is characterized in that described each GPRS data collection station is a low power dissipation design, and adopt one the joint or one the joint above lithium battery be power supply.
3, low power consumption data acquisition terminal according to claim 2 is characterized in that the lithium battery as power supply, can be to power with one to two joint 3.6V lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100421317A CN100424480C (en) | 2005-03-02 | 2005-03-02 | Low-power consumption GPRS data collection terminal for water gauge flow analysis and settlement |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100421317A CN100424480C (en) | 2005-03-02 | 2005-03-02 | Low-power consumption GPRS data collection terminal for water gauge flow analysis and settlement |
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| CN1828234A true CN1828234A (en) | 2006-09-06 |
| CN100424480C CN100424480C (en) | 2008-10-08 |
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| CNB2005100421317A Expired - Fee Related CN100424480C (en) | 2005-03-02 | 2005-03-02 | Low-power consumption GPRS data collection terminal for water gauge flow analysis and settlement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915598A (en) * | 2010-08-27 | 2010-12-15 | 成都品冠科技有限公司 | Header of low-power-consumption network intelligent water meter and application method thereof |
| TWI426468B (en) * | 2009-12-11 | 2014-02-11 | ||
| CN103791949A (en) * | 2014-02-24 | 2014-05-14 | 赵威 | Low power consumption and wireless communication flow gauge for displaying three kinds of flow information |
| CN104268425A (en) * | 2014-10-13 | 2015-01-07 | 威海市天罡仪表股份有限公司 | Self-adaptive low-power-consumption sampling method for ultrasonic wave water meter |
| CN110189162A (en) * | 2019-04-26 | 2019-08-30 | 特斯联（北京）科技有限公司 | A kind of intelligent water consumption and water rate statistical method based on big data |
| CN111486918A (en) * | 2020-06-15 | 2020-08-04 | 泉州慧霁科技有限公司 | Water consumption number acquisition method of intelligent electronic induction water meter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07225890A (en) * | 1994-02-10 | 1995-08-22 | Canon Inc | Flow rate detector, terminal equipment and meter inspection system using these detector and equipment |
| CN2581952Y (en) * | 2002-11-29 | 2003-10-22 | 福建省天通电讯科技有限公司 | Flow pulse counting acquiring display and data transmission apparatus |
| CN2585294Y (en) * | 2002-12-03 | 2003-11-05 | 重庆市智能水表有限责任公司 | Radio, long-distance gauging and controlling intelligent terminal for urban running water network |
| CN2634487Y (en) * | 2003-06-03 | 2004-08-18 | 南京世纪东方电子有限责任公司 | Distribution monitoring terminal |
-
2005
- 2005-03-02 CN CNB2005100421317A patent/CN100424480C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI426468B (en) * | 2009-12-11 | 2014-02-11 | ||
| CN101915598A (en) * | 2010-08-27 | 2010-12-15 | 成都品冠科技有限公司 | Header of low-power-consumption network intelligent water meter and application method thereof |
| CN101915598B (en) * | 2010-08-27 | 2016-04-06 | 成都品冠科技有限公司 | A kind of header of low-power-consumption network intelligent water meter and using method thereof |
| CN103791949A (en) * | 2014-02-24 | 2014-05-14 | 赵威 | Low power consumption and wireless communication flow gauge for displaying three kinds of flow information |
| CN103791949B (en) * | 2014-02-24 | 2016-06-29 | 赵威 | The low-consumption wireless communication traffic gauge table of three kinds of flow informations of display |
| CN104268425A (en) * | 2014-10-13 | 2015-01-07 | 威海市天罡仪表股份有限公司 | Self-adaptive low-power-consumption sampling method for ultrasonic wave water meter |
| CN104268425B (en) * | 2014-10-13 | 2017-07-04 | 威海市天罡仪表股份有限公司 | The self adaptation low-power consumption method of sampling of ultrasonic water meter |
| CN110189162A (en) * | 2019-04-26 | 2019-08-30 | 特斯联（北京）科技有限公司 | A kind of intelligent water consumption and water rate statistical method based on big data |
| CN111486918A (en) * | 2020-06-15 | 2020-08-04 | 泉州慧霁科技有限公司 | Water consumption number acquisition method of intelligent electronic induction water meter |
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| Publication number | Publication date |
|---|---|
| CN100424480C (en) | 2008-10-08 |
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Granted publication date: 20081008 Termination date: 20110302 |