CN103344295A - Electronic water meter - Google Patents
Electronic water meter Download PDFInfo
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- CN103344295A CN103344295A CN2013102965584A CN201310296558A CN103344295A CN 103344295 A CN103344295 A CN 103344295A CN 2013102965584 A CN2013102965584 A CN 2013102965584A CN 201310296558 A CN201310296558 A CN 201310296558A CN 103344295 A CN103344295 A CN 103344295A
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Abstract
The invention discloses an electronic water meter. The electronic water meter comprises a water meter base meter, a metering and sampling component, a data processing unit, a data storage unit and a data transmission unit. The metering and sampling component comprises a plurality of magneto-dependent sensors, the water meter base meter comprises a base and an annular magnet, the annular magnet is installed on the end portion of a rotating shaft of an impeller of the water meter base meter, the magneto-dependent sensors are all arranged on one face, opposite to the annular magnet, of the base and located over the annular magnet perpendicularly, and the magneto-dependent sensors are used for converting sensed magnetic pole converting information of the annular magnet into electric signals. The output ends of the magneto-dependent sensors are all connected with the input end of the data processing unit, the data processing unit is connected with the data storage unit, and the data processing unit is further connected with the data transmission unit. The electronic water meter has better temperature stability, a wider metering range, higher reliability, and a more convenient and fast management and maintenance method.
Description
Technical field
The present invention relates to a kind of water meter, particularly a kind of electric water meter.
Background technology
The most water meters that use in the life are the mechanical type water meter more than 90% now.Along with deepening continuously of Chinese city water supply company system reform, each water undertaking recognizes the importance of the accurate measurement of flow water meter, intelligent management gradually, so the problem of the tiny flow quantity of water meter metering ability itself and precision has much room for improvement.The defective of traditional type water meter: 1, waste water resource, because the precision of metering is limited, under the smaller situation of current, leakage loss is big, is difficult to accurate measurement; 2, common intellectual water meter adopts the metering method of tongue tube, and dirigibility is relatively poor on the one hand, and measuring accuracy is restricted on the other hand; 3, copy and accept with ladder of management and fall behind, because mechanical water meter all is to adopt the manual metering mode, not only increased handling cost, and be unfavorable for the management and control of on-the-spot table meter; 4, be difficult to safeguard that field erected table meter much is to go copy reading one secondary data one or two months, run into the situation of table meter fault, be not easy to find, the monitoring difficulty.
Summary of the invention
The purpose of this invention is to provide the high and electric water meter easy to maintenance of a kind of measuring accuracy.
This electric water meter provided by the invention, this water meter comprise essentic-water-meter, metering sample unit, data processing unit, data storage cell and data transmission unit; The metering sample unit comprises some magneto-dependent sensors, essentic-water-meter comprises base and a ring-shaped magnet, this ring-shaped magnet is installed in the wheel rotation shaft end of described essentic-water-meter, described some magneto-dependent sensors all are arranged in the one side of the base relative with described ring-shaped magnet, be positioned at directly over ring-shaped magnet vertical, the reversal of magnetism information translation that is used for this ring-shaped magnet that will respond to is electric signal; The output terminal of described some magneto-dependent sensors all is connected with the input end of data processing unit, and data processing unit is connected with data storage cell, and data processing unit also is connected with data transmission unit.
Described magneto-dependent sensor all adopts the tunnel magneto resistance sensor.The magnet of the Ferrite Material of the multipole magnetization mode of two pairs of magnetic poles of described ring-shaped magnet employing.Described data storage cell comprises memory power control circuit and storer.Described data transmission unit adopts the infrared communication unit, and this unit is connected with the serial ports of the microprocessor of data processing unit.Described infrared communication unit comprises infrared receiving circuit and infrared transtation mission circuit.Described infrared receiving circuit comprises power control circuit and receiving circuit.
The present invention adopts non-contacting magnetic field detection technology, has avoided the problem of traditional machinery/magnetic reed switch serviceable life and anti-vibration collision; The present invention can measure the water yield information that rotates and reverse of current accurately, even under the situation of the anti-dress of table meter, and the water information that reads the user that also can be correct; The present invention adopts the magnet of Ferrite Material, and not needing increases extra flow-stop valve device, and be guaranteed serviceable life; The present invention is sent to administrative center to the data of table meter quickly by data transmission unit, so that the staff understands user's water situation in real time, realizes automatic data logging, effectively solves owing to copy and accept the untimely water yield supply and marketing difference problem that causes of metering; Simultaneously user's operating position is understood according to the analysis to water yield data by administrative center, whether exist leak, situation such as water pipe explosion, reduce unnecessary loss, reach the purpose of reasonable management and control.This shows that the present invention has significantly improved the reliability and stability of system.
Description of drawings
Fig. 1 is functional framework figure of the present invention.
Fig. 2 is the structural representation of metering sample unit of the present invention.
Fig. 3 is data storage cell circuit diagram of the present invention.
Fig. 4 is data transmission unit infrared receiving circuit schematic diagram of the present invention.
Fig. 5 is the infrared transtation mission circuit schematic diagram of data transmission unit of the present invention.
Embodiment
As shown in Figure 1, the present invention includes essentic-water-meter, metering sample unit, data processing unit, data storage cell and data transmission unit.The metering sample unit is gathered the water yield flow signal of essentic-water-meter, then this detection signal is reached data processing unit, data processing unit reaches the data storage cell storage with data, also will measure result and failure message etc. and transfer to control center by data transmission unit, by the analysis of administrative authority's basis to water yield information, grasp user's water situation, thereby realize the real-time monitoring of his-and-hers watches meter.
Essentic-water-meter comprises the watchcase of mechanical type water meter, the latter half of mechanical type water meter movement, and its latter half has comprised the ring-shaped magnet with the transmission of movement the first half.
Data processing unit comprises microprocessor.Because the present invention adopts contactless magneto-dependent sensor in water yield sampling, so microprocessor of the present invention does not need to be specifically designed to the nonshared control unit of water meter control, under the cooperation of software compensation algorithm, meter characteristic has had substantial raising.
As shown in Figure 2, the metering sample unit comprises two magneto-dependent sensors 2, and essentic-water-meter comprises base 1 and a ring-shaped magnet 3.Ring-shaped magnet 3 is installed on the wheel rotation axle 4 of essentic-water-meter, the longitudinal center line of the longitudinal center line of base 1 and impeller shaft 4 is on same straight line, two magneto-dependent sensors 2 all are arranged in the relative one side of base 1 and ring-shaped magnet 3, be positioned at directly over ring-shaped magnet 3 vertical, the reversal of magnetism information translation that is used for this ring-shaped magnet 3 that will respond to is electric signal.
Ring-shaped magnet adopts the multipole magnetization magnet of two pairs of magnetic poles, is the magnet of Ferrite Material.
The setting angle of two magneto-dependent sensors is between 10 ℃ ~ 90 ℃.
Specific operation process is: at first current drive the wheel rotation in the essentic-water-meter, and impeller drives the ring-shaped magnet 3 that is installed on the impeller shaft 4 and rotates, and forms periodically variable magnetic field; By the magneto-dependent sensor 2 that is installed on the base 1 electric signal that the field signal that changes converts correspondence to is reached data processing unit again, the microprocessor in the data processing unit carries out calculation process to these data, finally obtains the metering result of water meter.
The present invention detects the sense of rotation of ring-shaped magnet in the essentic-water-meter by two magneto-dependent sensors.When the N of ring-shaped magnet level when the magneto-dependent sensor, the magneto-dependent sensor output low level; When the S of ring-shaped magnet level when the magneto-dependent sensor, magneto-dependent sensor output high level.Two magneto-dependent sensors will sample water yield information and be transferred to data processing unit with the form of square-wave signal, the height different level signal that from two magneto-dependent sensors transmit of the microprocessor of data processing unit by receiving, judge the sense of rotation of magnet, and then judge the water (flow) direction of water meter.Simultaneously, data processing module is converted into water meter and rotates the number of turns accordingly by the umber of pulse of metering magneto-dependent sensor output, obtains the corresponding flow information of water meter thus.
Because two magneto-dependent sensors differ certain angle, make when two magnetic pole ring-shaped magnets rotate a circle, and can obtain 8 magnetic field state amounts.When the impeller sense of rotation of water meter when just changeing, water meter movement whenever rotates a circle, two magneto-dependent sensors are exported one group of 8 status data altogether, namely 10,11,01,00,10,11,01,00; The consumption information data transmission that data processing unit will just change adds up to the just commentaries on classics memory block of data storage device, and the consumption information value of water meter counter-rotating is constant; When the impeller sense of rotation of water meter during for counter-rotating, movement whenever rotates a circle, and two magneto-dependent sensors are exported corresponding 8 status datas of another group altogether, and namely 01,11,10,00,01,11,10,00; Data processing unit adds up consumption information data transmission to the counter-rotating memory block of data storage device of counter-rotating; Deduct the consumption information data of counter-rotating by the amount of migrating information data just, obtain the information value of actual used water amount.Otherwise, when water meter is mounted in the other direction, can obtain the information value of actual used water amount by the magneto-dependent sensor consumption information data that the consumption information data deducts is just changeing of will reversing.Realize the detection of forward data thus, also realized the accurate measurement of reverse data.
The present invention can the result be leaked to water meter or the booster situation is judged according to measuring.When the metering result all occurs the numerical value of lasting little change in the general non-water time (for example midnight) continuous several days, can judge that then there is water leakage fault in this user's water meter; When the metering result when continuing big flow value, can judge that then there is the booster fault in this water meter position.
Magneto-dependent sensor among the present invention all can adopt the tunnel magneto resistance sensor.
As shown in Figure 3, data storage cell comprises memory power control circuit and storer D2, and this storer is connected with the microprocessor of data processing module by the I2C bus, and the data that have data processing unit to transmit are carried out the subregion storage.The memory block of storer is divided and is comprised and just change memory block and counter-rotating memory block, is just changeing the data on flows information of memory block when being used for depositing water meter and just changeing, the data on flows information when the counter-rotating memory block is used for depositing the water meter counter-rotating.
Consider the situation that reduces power consumption, the present invention controls the power supply of storer D2.The memory power control circuit comprises metal-oxide-semiconductor V16 and power supply V3P0.The grid of metal-oxide-semiconductor V16 is connected with power supply V3P0 by resistance R 37, and this grid pin also is connected with the GPIO port of the microprocessor of data processing unit, for the memory power control signal E2PROM_Power_Ctrl of reception from this microprocessor; Its source electrode is connected with power supply V3P0, and this pin is also by capacitor C 37 ground connection; Its drain electrode is connected with memory power V3P0_A, and this pin is also by capacitor C 38 ground connection.
1 pin of storer D2,2 pin, 3 pin and 4 pin are connected with memory power V3P0_A by capacitor C 9 after linking to each other, and these 4 pins are also distinguished ground connection simultaneously.5 pin of storer D2 are connected with memory power V3P0_A by resistance R 8, and this pin also is connected with the microprocessor of data processing unit by the I2C bus, are used for receiving the data-signal EEPROM_SDA that is transmitted by microprocessor.6 pin of storer D2 are connected with memory power V3P0_A by resistance R 7, and this pin also is connected with the microprocessor of data processing unit by the I2C bus, are used for receiving the control signal EEPROM_SCL that is transmitted by microprocessor.The 7 pin ground connection of storer D2,8 pin of storer D2 are connected with memory power V3P0_A.
The concrete course of work is: microprocessor is by the open and close of memory power control signal E2PROM_Power_Ctrl control store D2 power supply.When this signal when low, metal-oxide-semiconductor V16 conducting, this moment, memory power V3P0_A got electricly, capacitor C 37 and capacitor C 38 play the effect of filtering respectively, strengthen the stability of voltage.After memory power V3P0_A was charged, storer D2 worked on power.The effect of resistance R 7, resistance R 8 is bus signals to be given draw, and strengthens the driving force of bus.Capacitor C 9 is used for stable storage D2 power supply.
The infrared communication unit comprises infrared receiving circuit and infrared transtation mission circuit.
As shown in Figure 4, infrared receiving circuit comprises power control circuit and receiving circuit.
Power control circuit comprises metal-oxide-semiconductor V11, capacitor C 28 and polar capacitor C29.The grid of metal-oxide-semiconductor V11 is connected with power supply V3P0 by resistance R 30, and this grid pin is connected with the GPIO port of CPU simultaneously, is used for transmitting infrared power control signal IR_Power_Ctrl; Its source electrode is connected with power supply V3P0, and this power supply V3P0 is also by capacitor C 30 ground connection; Its drain electrode is connected with infrared power supply V3P0_IR, and this infrared power supply V3P0_IR is also by capacitor C 31 ground connection.Capacitor C 28 be connected between power supply V3P0 and the ground after polar capacitor C29 is in parallel.
Receiving circuit comprises infrared receiving tube V12.3 pin of infrared receiving tube V12 are connected with infrared power supply V3P0_IR by resistance R 31; Its 2 pin ground connection; Its 1 pin is connected with infrared power supply V3P0_IR by resistance R 33, and this 1 pin also is connected with the serial ports receiving end of CPU by resistance R 35, is used for transmitting infrared reception signal IR_RX, and this 1 pin is also by capacitor C 32 ground connection.
The concrete course of work is: whether CPU powers on by the power supply that infrared power supply control letter IR_power_Ctrl controls infrared receiving tube V12.When hot external power control letter IR_power_Ctrl is low, metal-oxide-semiconductor V11 conducting, this moment, power supply V3P0_IR was charged, and wherein capacitor C 30, capacitor C 31 electric capacity play the effect of filtering respectively, strengthen the stability of voltage; After hot external power V3P0_IR had electricity, infrared receiving tube V12 worked on power.Resistance R 33 mainly play receive signal on draw effect, strengthen the driving force of bus.Resistance R 35 is used for reducing external interference signals to the influence of microprocessor.
Because the power supply of infrared receiving circuit is controlled, this infrared receiving circuit has low in power consumption.
As shown in Figure 5, infrared transtation mission circuit comprises triode V10, triode V13 and power valve LED1.The base stage of triode V13 is connected with the frequency output terminal of CPU by resistance R 34, be used for transmitting the 38KHz frequency signal, the emitter grounding of triode V13, its collector is connected with the emitter-base bandgap grading of triode V10, the base stage of triode V10 is connected with the emission port of CPU by resistance R 32, be used for transmitting transmission signal IR_TX, the collector of this triode is connected with power supply V3P0 by the resistance R 28 power valve LED1 that connects again, resistance R 29 is in parallel with resistance 28, and is connected between the cathode terminal of the collector of triode V10 and power valve LED1.
The concrete course of work is: when sending data with over the horizon communication system, the frequency output terminal output 38KHz frequency of CPU, CPU makes triode V10 conducting with the output high level of the transmission signal IR_TX of emission port, power valve LED1 is charged, and data send by power valve LED1 thus.
The present invention is converted into water meter turbine and rotates the number of turns accordingly, and then calculate the corresponding flow of water meter by the umber of pulse of metering magneto-dependent sensor output; The rotating that has realized current detects, and solves because the situation of the geostrophic measuring accuracy shakiness of current.
The present invention adopts common dry-type meter base table part, has cancelled easily worn parts such as traditional counting gear and magnetic reed switch; Adopted contactless tunnel magneto resistance sensor to detect wheel rotation, the sensitivity that has improved flow detection greatly; Ring-shaped magnet adopts the magnet of Ferrite Material, and be guaranteed serviceable life of the present invention; Under the cooperation of software compensation algorithm, meter characteristic has had substantial raising, has improved range ratio and the measuring accuracy thereof of table meter.Initiating flow of the present invention is low, range ratio is wide, the pressure loss is little, it is big to cross current-carrying capacity, compares with existing scheme, has significantly in reliability and stability and improves.
Claims (7)
1. an electric water meter is characterized in that, this water meter comprises essentic-water-meter, metering sample unit, data processing unit, data storage cell and data transmission unit; The metering sample unit comprises some magneto-dependent sensors, essentic-water-meter comprises base and a ring-shaped magnet, this ring-shaped magnet is installed in the wheel rotation shaft end of described essentic-water-meter, described some magneto-dependent sensors all are arranged in the one side of the base relative with described ring-shaped magnet, be positioned at directly over ring-shaped magnet vertical, the reversal of magnetism information translation that is used for this ring-shaped magnet that will respond to is electric signal; The output terminal of described some magneto-dependent sensors all is connected with the input end of data processing unit, and data processing unit is connected with data storage cell, and data processing unit also is connected with data transmission unit.
2. electric water meter according to claim 1 is characterized in that, described magneto-dependent sensor all adopts the tunnel magneto resistance sensor.
3. electric water meter according to claim 1 is characterized in that, the magnet of the Ferrite Material of the multipole magnetization mode of two pairs of magnetic poles of described ring-shaped magnet employing.
4. electric water meter according to claim 1 is characterized in that, described data storage cell comprises memory power control circuit and storer.
5. electric water meter according to claim 1 is characterized in that, described data transmission unit adopts the infrared communication unit, and this unit is connected with the serial ports of the microprocessor of data processing unit.
6. electric water meter according to claim 5 is characterized in that, described infrared communication unit comprises infrared receiving circuit and infrared transtation mission circuit.
7. electric water meter according to claim 6 is characterized in that, described infrared receiving circuit comprises power control circuit and receiving circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310296558.4A CN103344295B (en) | 2013-07-16 | 2013-07-16 | Electric water meter |
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| CN201310296558.4A CN103344295B (en) | 2013-07-16 | 2013-07-16 | Electric water meter |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104048725A (en) * | 2014-07-01 | 2014-09-17 | 江苏赛达电子科技有限公司 | Integrated water meter |
| CN104075765A (en) * | 2014-07-21 | 2014-10-01 | 江苏赛达电子科技有限公司 | Triple impulse sampling remote water meter |
| CN104748808A (en) * | 2015-04-20 | 2015-07-01 | 成都千嘉科技有限公司 | Infrared interface system for gas meter |
| CN104776932A (en) * | 2015-04-20 | 2015-07-15 | 成都千嘉科技有限公司 | Temperature detection system applied to gas meter |
| CN108363346A (en) * | 2018-05-08 | 2018-08-03 | 江苏荣夏安全科技有限公司 | A kind of kitchen fire safety monitoring system |
| CN108362349A (en) * | 2018-01-05 | 2018-08-03 | 袁沛兰 | A kind of smart electronics water meter |
| CN109115293A (en) * | 2018-08-24 | 2019-01-01 | 浙江万胜智能科技股份有限公司 | A kind of electronic counting-type water meter |
| CN110617860A (en) * | 2018-06-19 | 2019-12-27 | 台湾优化水务股份有限公司 | Control method for automatically adjusting sampling frequency of flowmeter |
| CN113834538A (en) * | 2020-06-24 | 2021-12-24 | 上海凡宜科技电子有限公司 | Electronic water meter |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104048725A (en) * | 2014-07-01 | 2014-09-17 | 江苏赛达电子科技有限公司 | Integrated water meter |
| CN104075765A (en) * | 2014-07-21 | 2014-10-01 | 江苏赛达电子科技有限公司 | Triple impulse sampling remote water meter |
| CN104748808A (en) * | 2015-04-20 | 2015-07-01 | 成都千嘉科技有限公司 | Infrared interface system for gas meter |
| CN104776932A (en) * | 2015-04-20 | 2015-07-15 | 成都千嘉科技有限公司 | Temperature detection system applied to gas meter |
| CN104776932B (en) * | 2015-04-20 | 2017-12-08 | 成都千嘉科技有限公司 | System for detecting temperature for gas meter, flow meter |
| CN108362349A (en) * | 2018-01-05 | 2018-08-03 | 袁沛兰 | A kind of smart electronics water meter |
| CN108363346A (en) * | 2018-05-08 | 2018-08-03 | 江苏荣夏安全科技有限公司 | A kind of kitchen fire safety monitoring system |
| CN110617860A (en) * | 2018-06-19 | 2019-12-27 | 台湾优化水务股份有限公司 | Control method for automatically adjusting sampling frequency of flowmeter |
| CN109115293A (en) * | 2018-08-24 | 2019-01-01 | 浙江万胜智能科技股份有限公司 | A kind of electronic counting-type water meter |
| CN113834538A (en) * | 2020-06-24 | 2021-12-24 | 上海凡宜科技电子有限公司 | Electronic water meter |
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|---|---|
| CN103344295B (en) | 2015-11-11 |
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