CN203323817U - Electronic water meter - Google Patents
Electronic water meter Download PDFInfo
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- CN203323817U CN203323817U CN2013204203203U CN201320420320U CN203323817U CN 203323817 U CN203323817 U CN 203323817U CN 2013204203203 U CN2013204203203 U CN 2013204203203U CN 201320420320 U CN201320420320 U CN 201320420320U CN 203323817 U CN203323817 U CN 203323817U
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Abstract
The utility model discloses an electronic water meter comprising a water meter base meter, a measuring and sampling part, a data processing unit, a data storage unit and a data transmission unit. The measuring and sampling part comprises a plurality of magnetic-sensitive sensors. The water meter base meter comprises a base and an annular magnet, the annular magnet is arranged on the end portion of a rotary shaft of an impeller of the water meter base meter, and the magnetic-sensitive sensors are arranged on the side, opposite to the annular magnet, of the base, located right above the annular magnet and used for converting sensed magnetic pole changing information of the annular magnet to an electric signal. The output ends of the magnetic-sensitive sensors are 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 is good in temperature stability, wider in measuring range, high in reliability and convenient in management and maintenance mode.
Description
Technical field
The utility model relates to a kind of water meter, particularly a kind of electric water meter.
Background technology
The most water meters that use in life now are mechanical water meter more than 90%.Along with deepening continuously of Chinese city water supply company system reform, each water undertaking recognizes the importance of flow water meter accurate measurement, 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 defect of traditional type water meter: 1, waste water resource, because the precision of metering is limited, in the situation that current are smaller, leakage loss is large, is difficult to accurate measurement; 2, common intellectual water meter adopts the metering method of tongue tube, and dirigibility is 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 is all 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, field erected table meter, be much to go copy reading one secondary data one or two months, runs into the situation of table meter fault, is not easy to find the monitoring difficulty.
The utility model content
The purpose of this utility model is to provide a kind of measuring accuracy electric water meter high and easy to maintenance.
This electric water meter that the utility model provides, 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 arranged on 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, for the reversal of magnetism information of this ring-shaped magnet that will respond to, be converted to 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 ，Gai unit, infrared communication unit to be 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 utility model adopts non-contacting magnetic field detection technology, has avoided the problem of traditional machinery/magnetic reed switch serviceable life and anti-vibration collision; The utility model can measure the water yield information that rotates and reverse of current accurately, even in the situation of the anti-dress of table meter, and the water information that reads the user that also can be correct; The utility model adopts the magnet of Ferrite Material, and not needing increases extra flow-stop valve device, and be guaranteed serviceable life; The utility model passes through data transmission unit, quickly the data of table meter are sent to administrative center, so that the staff understands user's water situation in real time, realize automatic data logging, effectively solve owing to copying and accepting the water yield that metering causes not in time for reporting the accomplishment of a task or termination of a mission problem; Simultaneously user's service condition, according to the analysis to water yield data, is understood by administrative center, whether exist leak, the situation such as water pipe explosion, reduce unnecessary loss, reach the purpose of reasonable management and control.As can be seen here, the utility model has significantly improved the reliability and stability of system.
The accompanying drawing explanation
Fig. 1 is functional framework figure of the present utility model.
Fig. 2 is the structural representation of metering sample unit of the present utility model.
Fig. 3 is data storage cell circuit diagram of the present utility model.
Fig. 4 is data transmission unit infrared receiving circuit schematic diagram of the present utility model.
Fig. 5 is the infrared transtation mission circuit schematic diagram of data transmission unit of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises essentic-water-meter, metering sample unit, data processing unit, data storage cell and data transmission unit.The metering sample unit gathers the water yield flow signal of essentic-water-meter, then this detection signal is reached to data processing unit, data processing unit reaches the data storage cell storage by data, also will measure result and failure message etc. and transfer to control center by data transmission unit, analysis by 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 water meter, the latter half of mechanical 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 utility model adopts contactless magneto-dependent sensor in water yield sampling, so microprocessor of the present utility model does not need to be specifically designed to the list-directed nonshared control unit of water, 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 arranged 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 one side that base 1 is relative with ring-shaped magnet 3, be positioned at directly over ring-shaped magnet 3 vertical, for the reversal of magnetism information of this ring-shaped magnet 3 that will respond to, be converted to 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 essentic-water-meter, and impeller drives the ring-shaped magnet 3 be arranged on impeller shaft 4 and rotates, and forms periodically variable magnetic field; Electric signal corresponding to the field signal of variation convert to and reach data processing unit by being arranged on magneto-dependent sensor 2 on base 1 again, the microprocessor in data processing unit carries out calculation process to these data, finally obtains the metering result of water meter.
The utility model detects the sense of rotation of ring-shaped magnet in essentic-water-meter by two magneto-dependent sensors.When the close magneto-dependent sensor of the N of ring-shaped magnet level, the magneto-dependent sensor output low level; When the close magneto-dependent sensor of the S of ring-shaped magnet level, 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 microprocessor of data processing unit is by the different level signal of the height transmitted from two magneto-dependent sensors received, the sense of rotation of judgement magnet, and then the water (flow) direction of judgement water meter.Simultaneously, data processing module, by the umber of pulse of metering magneto-dependent sensor output, is converted into water meter and rotates accordingly the number of turns, obtains thus the corresponding flow information of water meter.
Because two magneto-dependent sensors differ certain angle, make when two magnetic pole ring-shaped magnets rotate a circle, can obtain 8 magnetic field state amounts.When the vane rotary direction of water meter is forward, water meter movement often rotates a circle, and two magneto-dependent sensors are exported one group of 8 status data altogether, and 10,11,01,00,10,11,01,00; Data processing unit is added up the consumption information data transmission of forward to the forward memory block of data storage device, the consumption information value of water meter reversion is constant; When the vane rotary direction of water meter, during for reversion, movement often rotates a circle, and two magneto-dependent sensors are exported corresponding 8 status datas of another group altogether, and 01,11,10,00,01,11,10,00; Data processing unit is added up the consumption information data transmission of reversion to the reversion memory block of data storage device; Deduct the consumption information data of reversion by forward consumption information data, obtain the information value of actual used water amount.Otherwise, when water meter is mounted in the other direction, can deduct the consumption information data of forward by the magneto-dependent sensor consumption information data of reversing, obtain the information value of actual used water amount.Realize thus the detection of forward data, also realized the accurate measurement of reverse data.
The utility model can according to measuring, result be leaked to water meter or the booster situation is judged.When the numerical value of micro-change for example, all appears continuing in the metering result in the general non-water time (midnight) continuous several days, can judge that there is water leakage fault in this user's water meter; When the metering result is, while continuing large flow value, can judge that there is the booster fault in this water meter position.
Magneto-dependent sensor in the utility model 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 to partitioned storage.The memory block of storer is divided and is comprised forward memory block and reversion memory block, the data on flows information when forward memory block is used for depositing the water meter forward, data on flows information when reverse for depositing water meter in the reversion memory block.
Consider the situation that reduces power consumption, the utility model is controlled 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, the memory power control signal E2PROM_Power_Ctrl for 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 being connected, 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, for receiving the data-signal EEPROM_SDA 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, for receiving the control signal EEPROM_SCL transmitted by microprocessor.The 7 pin ground connection of storer D2,8 pin of storer D2 are connected with memory power V3P0_A.
The specific works process 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, now memory power V3P0_A obtains electricly, capacitor C 37 and capacitor C 38 play respectively the effect of filtering, strengthen the stability of voltage.After memory power V3P0_A is charged, storer D2 works 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 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, 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 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, and for transmitting infrared reception signal IR_RX, this 1 pin is also by capacitor C 32 ground connection.
The specific works process is: whether the power supply that CPU controls infrared receiving tube V12 by infrared power supply control letter IR_power_Ctrl powers on.Hot external power is controlled and is believed when IR_power_Ctrl is low, metal-oxide-semiconductor V11 conducting, and now power supply V3P0_IR is charged, and wherein capacitor C 30, capacitor C 31 electric capacity play respectively the effect of filtering, strengthen the stability of voltage; After hot external power V3P0_IR has electricity, infrared receiving tube V12 works on power.Resistance R 33 mainly play receive signal on draw effect, strengthen the driving force of bus.Resistance R 35 is for reducing the impact of external interference signals on microprocessor.
Because the power supply to infrared receiving circuit is controlled, this infrared receiving circuit has the characteristics of low-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, 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, for transmitting transmitted 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 specific works process is: when with over the horizon communication system, sending data, the frequency output terminal output 38KHz frequency of CPU, CPU, by the output high level of the transmitted signal IR_TX of emission port, makes triode V10 conducting, power valve LED1 is charged, and data send by power valve LED1 thus.
The utility model, by the umber of pulse of metering magneto-dependent sensor output, is converted into water meter turbine and rotates accordingly the number of turns, and then calculate the corresponding flow of water meter; The rotating that has realized current detects, and solves the situation due to the geostrophic measuring accuracy shakiness of current.
The utility model adopts common dry-type meter base table part, has cancelled the 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 greatly improved flow detection; Ring-shaped magnet adopts the magnet of Ferrite Material, and be guaranteed serviceable life of the present utility model; 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.Initial-flow of the present utility model is low, range ratio is wide, the pressure loss is little, it is large to cross current-carrying capacity, with existing scheme, compares, and has on reliability and stability significantly 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 arranged on 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, for the reversal of magnetism information of this ring-shaped magnet that will respond to, be converted to 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 ，Gai unit, infrared communication unit to be 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204203203U CN203323817U (en) | 2013-07-16 | 2013-07-16 | Electronic water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204203203U CN203323817U (en) | 2013-07-16 | 2013-07-16 | Electronic water meter |
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| Publication Number | Publication Date |
|---|---|
| CN203323817U true CN203323817U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013204203203U Expired - Lifetime CN203323817U (en) | 2013-07-16 | 2013-07-16 | Electronic water meter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344295A (en) * | 2013-07-16 | 2013-10-09 | 湖南威铭能源科技有限公司 | Electronic water meter |
| CN103884405B (en) * | 2014-04-15 | 2016-11-23 | 湖南威铭能源科技有限公司 | The gas meter, flow meter correction method shown based on liquid crystal display screen |
| CN109298323A (en) * | 2018-08-15 | 2019-02-01 | 安徽宏远仪表有限公司 | A kind of low power consumption switch detection circuit |
| CN113532571A (en) * | 2021-07-21 | 2021-10-22 | 山东潍微科技股份有限公司 | Ultrasonic counting device for water meter |
| CN114877956A (en) * | 2022-05-31 | 2022-08-09 | 浙江威星智能仪表股份有限公司 | Electromechanical separation intelligent water meter |
-
2013
- 2013-07-16 CN CN2013204203203U patent/CN203323817U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344295A (en) * | 2013-07-16 | 2013-10-09 | 湖南威铭能源科技有限公司 | Electronic water meter |
| CN103344295B (en) * | 2013-07-16 | 2015-11-11 | 湖南威铭能源科技有限公司 | Electric water meter |
| CN103884405B (en) * | 2014-04-15 | 2016-11-23 | 湖南威铭能源科技有限公司 | The gas meter, flow meter correction method shown based on liquid crystal display screen |
| CN109298323A (en) * | 2018-08-15 | 2019-02-01 | 安徽宏远仪表有限公司 | A kind of low power consumption switch detection circuit |
| CN113532571A (en) * | 2021-07-21 | 2021-10-22 | 山东潍微科技股份有限公司 | Ultrasonic counting device for water meter |
| CN114877956A (en) * | 2022-05-31 | 2022-08-09 | 浙江威星智能仪表股份有限公司 | Electromechanical separation intelligent water meter |
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Granted publication date: 20131204 |
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| CX01 | Expiry of patent term |