Tap water passive remote meter acquisition system

Abstract

The utility model discloses a tap water passive remote meter acquisition system, which is characterized in that water flow generators are respectively arranged on water supply branch pipes of a first floor and a second floor, water paths of the water flow generators are connected in series on the water supply branch pipes, and circuits of the two water flow generators are connected with an electric energy storage unit through diode reverse protection circuits. When users on the first floor or / and the second floor use water, water flows in the water supply branch pipes, electricity generated by the water flow generator charges a battery in the electric energy storage unit, and then the electric energy storage unit provides electric energy for the N photoelectric direct-reading water meters, the low-power-consumption water meter data acquisition unit and the data wireless remote transmission unit. On the premise of meeting basic water consumption requirements of high-rise users, the electricity consumption cost is reduced, the problems existing in the prior art that mains supply or a large-capacity non-rechargeable battery is adopted for supplying power to the water meter data acquisition unit and related equipment are solved, and therefore the cost is saved to a greater extent.

Description

Technical Field

[0001] The utility model relates to a tap water remote meter collection system, in particular to a tap water passive remote meter collection system. Background Art

[0002] The existing water supply remote meter collection system is equipped with a water supply main, and the water supply branch pipes on each floor are connected to the water supply main. A water meter is installed on the water supply branch pipes on each floor. All water meters are connected to the low-power water meter data collection unit, and the low-power water meter data collection unit is connected to the data wireless remote transmission unit (GPRS). The low-power water meter data collection unit collects water meter readings and transmits them to the host through the data wireless remote transmission unit. Since the operation of the water supply remote meter collection system, the water meter data collection unit and related equipment have been powered by AC power or large-capacity non-rechargeable batteries.

[0003] In order to reduce the loss of power from the mains or batteries, the utility model patent with Chinese patent number ZL202120870101.X discloses a "low-power remote intelligent control water meter collection system". When the water meter data collection unit completes the collection work and sends the collected data to the concentrator, other data collection units that are in sleep mode and do not need to work will not be awakened, thus avoiding useless power consumption. The photoelectric direct-reading water meter (MBUS) only supplies power to the photoelectric device in the meter within the set meter reading time to complete the reading of the water meter pointer, and then turns off the power after the meter reading is completed. There is no need to track and record the water meter pointer for a long time, which can also save energy. However, the two existing power supply methods still have the following problems:

[0004] 1. For the mains power supply mode, it is necessary to negotiate with the power supply company on the power supply method or install an electricity metering device. Sometimes the wiring is complicated due to the special location of the equipment installation;

[0005] 2. The large-capacity non-rechargeable battery power supply requires regular manual replacement of batteries according to the battery life, which consumes huge manpower and material resources.

[0006] A hydroelectric generator is also called a "water wheel generator". When water with a certain potential energy passes through a water turbine, it converts the water energy into mechanical energy that drives the machine to rotate; the generator converts the mechanical energy into electrical energy for output. According to national industry standards, the tap water supply pressure in residents' homes should not only calculate the water level and extended resistance of the highest floor user, but also leave a certain margin to ensure the water flow rate. Otherwise, turning on the faucet will only result in a trickle or even dripping. Therefore, under normal circumstances, the end service head pressure is not less than 0.15MPa. However, since a hydroelectric generator is an energy conversion device that realizes the conversion of water potential energy into electrical energy, the traditional concept is that installing a hydroelectric generator in a tap water pipe will inevitably reduce the tap water pressure and cannot meet the basic water needs of high-rise users. Therefore, to date, there has been no report on the application of a hydroelectric generator in a tap water pipeline to generate electricity and provide electrical energy for the tap water remote meter collection system. Summary of the invention

[0007] In order to solve the above technical problems existing in the prior art, the utility model provides a tap water passive remote meter collection system.

[0008] The technical solution of the utility model is: a tap water passive remote meter collection system, with a water supply main, connected to the water supply main are N water supply branches, N is the number of floors and ≥ 2, a photoelectric direct-reading water meter is installed on each water supply branch, the N photoelectric direct-reading water meters are connected to a low-power water meter data collection unit, the low-power water meter data collection unit is connected to a data wireless remote transmission unit, water flow generators are respectively provided on the water supply branches on the first floor and the second floor, the water path of the water flow generator is connected in series to the water supply branch, the circuit of the water flow generator is connected to an electric energy storage unit through a diode reverse protection circuit, the electric energy storage unit is respectively connected to the N photoelectric direct-reading water meters, the low-power water meter data collection unit and the data wireless remote transmission unit to provide electric energy.

[0009] The diode reverse protection circuit is composed of three groups of diodes D1-D6 connected in parallel in pairs. The three groups of diodes D1-D6 connected in series in pairs are respectively a diode D1 and a diode D4 connected in series, a diode D3 and a diode D6 connected in series, and a diode D5 and a diode D1 connected in series. The phase lines of the three-phase windings Van, Vbn, and Vcn connected in star shape in the water flow generator are respectively connected to the series connection point of each group of diodes.

[0010] The utility model is only provided with water flow generators on the water supply branch pipes of the first floor and the second floor respectively. The water circuits of the water flow generators are connected in series to the water supply branch pipes, and the circuits of the two water flow generators are connected to the electric energy storage unit through the diode reverse protection circuit. When the users on the first floor and / or the second floor use water, water flows in the water supply branch pipes, and the electricity generated by the water flow generators is used to charge the batteries in the electric energy storage unit. After that, the electric energy storage unit provides electric energy for N photoelectric direct-reading water meters, low-power consumption water meter data acquisition units and data wireless remote transmission units. Under the premise of meeting the basic water needs of high-rise users, not only the electricity cost is reduced, but also the problems existing in the existing use of city electricity or large-capacity non-rechargeable batteries to power the water meter data acquisition unit and related equipment are overcome, thereby saving costs to a greater extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0012] Figure 2 It is a circuit principle block diagram of an embodiment of the utility model.

[0013] Figure 3 It is a circuit diagram of a diode reverse protection circuit according to an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The utility model discloses a tap water passive remote meter collection system. Figure 1 , 2As shown, the same as the prior art is that there is a water supply main 1, and seven water supply branches 2 are connected to the water supply main 1. A photoelectric direct-reading water meter 3 is installed on each water supply branch pipe 2. The seven photoelectric direct-reading water meters 3 are all connected to a low-power water meter data acquisition unit 4, and the low-power water meter data acquisition unit 4 is connected to a data wireless remote transmission unit 5. The difference from the prior art is that water flow generators 6 are respectively provided on the water supply branch pipes 2 on the first floor and the second floor, and the water path of the water flow generator 6 is connected in series to the water supply branch pipe 2. The circuits of the two water flow generators 6 are connected to an energy storage unit 8 through a diode reverse protection circuit 7, and the energy storage unit 8 is respectively connected to the seven photoelectric direct-reading water meters 3, the low-power water meter data acquisition unit 4 and the data wireless remote transmission unit 5 to provide electrical energy. The structure of the water flow generator 6 is basically the same as that of the existing water wheel generator, except that the water wheel is placed in the shell and the water inlet pipe and the water outlet pipe connected to the water supply branch pipe 2 are respectively arranged at both ends of the shell. The material is the material of the cold water meter movement (304 steel and ABS plastic), which can meet the drinking water standard and will not cause pollution to the drinking water. The motor adopts a brushless excitation generator, and the water wheel rotating bearing is synchronized with the motor rotating bearing, but they are isolated from each other in different bodies, so that the motor power generation part does not contact the water source. The power storage unit 8 is provided with a charging circuit and a lithium battery (7.2V / 3200MAH).

[0015] The diode reverse protection circuit 7 is as follows Figure 3 As shown, three groups of diodes D1-D6 are connected in parallel in series, and the three groups of diodes D1-D6 are respectively connected in series with diodes D1 and D4, diodes D3 and D6, and diodes D5 and D1. The phase lines of the three-phase windings Van, Vbn, and Vcn connected in star shape in the water flow generator 6 are respectively connected to the series connection points of each group of diodes. The currents ia, ib, and ic output by each winding are respectively reversely protected by diodes connected in series therewith. Finally, the output current I charges the lithium battery through the charging circuit in the electric energy storage unit 8.

[0016] As long as there is one user on the first or second floor who uses water, water will flow through the water supply branch pipes, and the water will hit the water wheel to generate electricity, charging the battery in the energy storage unit. The energy storage unit will then provide power to the seven photoelectric direct-reading water meters, low-power water meter data acquisition units, and wireless data transmission units. Because energy-saving photoelectric direct-reading water meters and low-power water meter data acquisition units are used, when the lithium battery is fully charged, it can provide power for the equipment for at least one year even if it is not charged later.

Claims

1. A tap water passive remote meter data collection system, comprising a water supply main (1), N water supply branch pipes (2) connected to the water supply main (1), wherein N is the number of floors and is ≥ 2, a photoelectric direct reading water meter (3) is installed on each water supply branch pipe (2), the N photoelectric direct reading water meters (3) are all connected to a low power consumption water meter data collection unit (4), and the low power consumption water meter data collection unit (4) is connected to a data wireless remote transmission unit (5), characterized in that: Water flow generators (6) are respectively provided on the water supply branch pipes (2) of the first floor and the second floor. The water circuits of the water flow generators (6) are connected in series to the water supply branch pipes (2). The circuits of the two water flow generators (6) are connected to an electric energy storage unit (8) via a diode reverse protection circuit (7). The electric energy storage unit (8) is respectively connected to N photoelectric direct-reading water meters (3), a low-power water meter data acquisition unit (4) and a data wireless remote transmission unit (5) to provide electric energy.

2. The tap water passive remote meter data collection system according to claim 1 is characterized by: The diode reverse protection circuit (7) is formed by three groups of diodes D1-D6 connected in parallel in pairs, wherein the three groups of diodes D1-D6 connected in parallel in pairs are respectively a diode D1 and a diode D4 connected in series, a diode D3 and a diode D6 connected in series, and a diode D5 and a diode D1 connected in series, and the phase lines of the three-phase windings Van, Vbn, and Vcn connected in star shape of the water flow generator (6) are respectively connected to the series connection point of each group of diodes.

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