Internet of Things intelligent water meter capable of working without power supply

Abstract

The invention discloses an Internet of Things intelligent water meter capable of working without power supply. A mechanical water meter has the functions of supplying water, metering, uniformly displaying water supply metering and closing a valve; the superposed circuit on the mechanical water meter has the functions of charging, fee display, management and valve opening; a valve capable of being automatically closed without electricity when control is not added is installed on a water supply channel in the water meter, the condition that water charge closed-loop management water supply conditions are not met when water charge is not received, the valve is attacked and damaged, mechanical faults, circuit faults and battery power shortage and shortage are caused, and the valve is automatically closed without electricity after one round of water supply is completed; the circuit converts the supplied water volume physical quantity into the collected electronic digital currency quantity in each round of water supply process, and the water meter is recovered to a new round of water supply initial state after charging; closed-loop payment exchange between physical goods and electronic currency is realized; the mechanical / electronic double-metering and double-display mode that mechanical metering of an existing electronic water meter is electromechanically converted into electronic metering and then secondarily converted into electronic currency is changed; and no pulse equivalent exists.

Description

Technical Field

[0001] The present invention relates to a flow measuring device; more specifically, to an Internet of Things (IoT) smart water meter that uses a central management computer to perform centralized / decentralized management, charging, and control of decentralized water supply terminals; wherein the circuit in the device does not require power during the water supply process, but is only powered on instantaneously during each round of water supply to perform IoT smart charging management and open valves installed in the device; and wherein the device can operate without power and automatically close valves in the device when water supply conditions are not met. Background Art

[0002] Currently, most publicly available electronic information-based water meters with management and control systems feature valves installed in the water supply path within the mechanical water meter. These valves, typically ball valves or globe valves, are driven open and closed by a motor and its mechanical reduction mechanism. The valve's opening and closing are controlled by circuitry built into the mechanical water meter or by circuits that communicate with a central management computer for data exchange. This on / off control can be decentralized, but more often, it employs a combination of centralized and decentralized control. These electronic circuits within the water meter include IC cards, smart IC cards, and their readers. Some IC cards are contactless, while others are contactless. While some water meters require wired communication lines for meter reading, the trend is towards interactive wireless cryptographic communication. The development of electronic and network technologies, particularly the Internet of Things (IoT), is significantly improving their security and practical applicability. Therefore, for distributed physical terminal water supply points like water supply networks, the IoT's interconnected decentralized and centralized management is currently the optimal application of electronic information technology. As for mechanical water meters, currently available mechanical water meters primarily use mechanical detection and measurement methods, such as velocity and volumetric methods, to measure the volume of water passing through the meter. A mechanical digital wheel (digital wheel) or a digital indicator on the top of a gear displays instantaneous and accumulated flow readings. Mechanical water meters offer stable, reliable detection and measurement, and the technology is mature. However, the non-electrical measurement technology used in electronic information-based water meters superimposes non-electrical measurement devices on the mechanical water meter. For example, a magnet is mounted on a rotating metering gear, passing over a magnetically sensitive reed switch or a magnetically sensitive semiconductor Hall element to generate an electronic pulse signal. Alternatively, mechanical rotation can be used to convert a light source into a digitally encoded optical pulse signal, or a corresponding electronically encoded signal. This electromechanical conversion (also known as analog-to-digital conversion, or A / D conversion, in electronic engineering) converts the water flow signal passing through the mechanical water meter into electronic pulse digital information. This electronic flow reading is then accumulated into a cumulative flow reading. The water meter circuit transmits flow information to the central management computer through wired or wireless communication networks and the Internet of Things. The central management computer manages user information, collects water fees based on corresponding management conditions and policy requirements (such as tiered water prices, overdraft water supply, etc.), and then converts the electronic digital quantity of the water fee into the analog quantity of water supply (D / A conversion) to control the valves in the water meter to supply water.

[0003] As can be seen from the above description, 1. Existing electronic information-based water meters have two metering readings: mechanical and electronic data for water flow. The metering data is displayed electronically and mechanically. This method has a major structural flaw: the simultaneous presence of both mechanical and electronic metering data means that daily water supply, water use, and bill payment management are all electronic information data. The metering detection and transmission are mechanical data, while the electronic data is merely a product of electronic pulses generated during the mechanical detection and metering process. The same water use data has two different metering readings: the basis for bill payment and water supply control are both electronic pulses. In actual management, the electronic data may be inconsistent with the mechanical data. When the mechanical / electronic data are inconsistent, the water supply and management department may determine the larger reading, the mechanical display data, or the electronic billing execution data. 2. When high power is required to drive a micro-reduction motor to close a valve within a water meter, if the installed power supply or auxiliary power supply (such as a storage capacitor) is dead, deficient, or unable to supply high current for various reasons, the meter motor cannot shut off the valve, causing the meter to lose control. Ball valves and globe valves are particularly prone to loss of control due to their inherent switching characteristics. 3. Existing electronic water meters require 24 / 7 uninterrupted power, even if it's only a tiny amount during the circuit's sleep state. This power supply is essential for electronic metering pulses to function. A power failure renders metering, billing, and valve closing impossible. If one or more of these functions malfunction, the electronic water meter's management functions cease to function. However, even the world's highest-quality batteries currently have a certain rate of sudden death within their normal service life. 4. If a magnet is located within the threshold sensitivity zone of a reed switch or magnetic Hall effect element when water supply is shut off, multiple electromechanical conversion count pulses may be erroneously generated. 5. In various standards including international standards IS0, Chinese national standards GB, GB / T, as well as various departmental standards and industry standards, electromechanical conversion is a secondary conversion: the first time, mechanical measurement is converted into electronic measurement, mechanical measurement + electronic measurement, and the second time, electronic measurement is converted into electronic currency. Summary of the Invention

[0004] The present invention aims to develop an IoT-enabled smart water meter that operates completely off-grid throughout the entire water supply process, except for the instantaneous power-up required for water fee collection. Metering management, fee deductions, and valve control all utilize a single mechanical metering readout. The mechanical meter functions include: mechanical metering, display, and valve closing. Specifically, mechanical detection and metering of supplied water volume, instantaneous flow rate display, mechanical metering transmission, and cumulative metering display all utilize a single mechanical metering readout. The meter automatically closes when power is lost due to failure to meet closed-loop water supply management requirements, such as failure to collect water fees, damage from an attack, mechanical failure, circuit failure, or battery failure. The circuitry of the IoT-enabled smart water meter provides for charging and management (including compliance with public welfare policies such as tiered water pricing and N-times overdrafts in arrears), and issues a command to open the valve after payment. Furthermore, if the user's water fee is not paid, the meter automatically closes the valve within the meter and stops water supply, requiring payment through multiple notifications, such as text messages, WeChat, and phone calls, without the need for power or a visit.

[0005] The first problem solved by this invention is the unified use of mechanical and electronic dual metering. The mechanical metering displays the metering results, while the electronic display displays the billing results. This invention ensures that when the mechanical metering data meets a billing unit, a corresponding billing status is generated. The next water supply cycle only begins after feedback confirms receipt of the water fee.

[0006] The second technical problem solved by the present invention is the problem of closing the mechanical valve in the water meter when the water supply conditions are not met; the present invention installs a valve that automatically closes without electricity in the mechanical water meter: during the process of opening the valve, the energy required to close the valve is stored in the displacement of the magnet and the deformation of the spring.

[0007] The third technical problem solved by the present invention is that electronic water meters cannot work normally without electricity. Since the present invention abandons the electronic pulse measurement, electromechanical conversion and other links, this problem is completely solved.

[0008] The fourth technical problem solved by the present invention is that the measurement detection, instantaneous flow rate and cumulative flow rate of the water meter are all completed by the mechanical structure; the collection of water charges is completed by the circuit, and the circuit starts the valve opening drive when the water charge is received, and does not start the valve opening drive if the water charge is not received; the A / D conversion and D / A conversion in the electronic / mechanical metering instruments are completely eliminated; the full closed-loop management and control of water charge collection and water supply management is realized, and a highly reliable closed-loop payment exchange of electronic currency and physical goods is realized.

[0009] The technical solution adopted in the present invention is:

[0010] A solution is proposed: a valve that automatically closes when power is lost is installed in the water supply path of a mechanical water meter. This mechanical water meter is then overlaid with an IoT smart circuit to create an IoT smart water meter. The mechanical functions of this IoT smart water meter include water supply, mechanical detection and metering, instantaneous metering display, cumulative metering display, and valve closure when power is lost. The valve automatically closes when power is lost, necessitating water supply disruptions, such as during periods of water shortage, mechanical failure, battery failure, circuit failure, or damage from an attack. The function of the IoT smart electronic circuit superimposed on the water meter is to power on for communication, charging, and management during each round of charging, including setting N times of arrears and overdrafts and providing various information notifications to display the water fee collection situation; converting the volume of water supply in each round into electronic digital currency; specifically, the IoT smart water meter will not be powered on when supplying water or not, and the circuit will only be powered on when charging; but when the user inquires, it can be manually powered on regardless of whether water is being supplied or not, and each water meter is given a unique code and QR code associated from the internal circuit to the external mark by the IC circuit inside the meter, and information is exchanged with the central management computer through various communication networks, IoT smart information networks, IC card carrier information transmission, etc. During each round of charging and water supply, the circuit is instantaneously powered on and meets the water supply conditions, and the motor inside the meter is started to restore the control mechanism to the initial state of the new round of water supply; once the electronic instruction is executed and completed, it has the characteristic of being unconditionally forced to continue execution by the mechanical part and cannot be revoked. The brief summary is: 1. Mechanical water meter shuts off valve for water supply measurement; 2. Circuit opens valve for charging; 3. Mechanical unified measurement and display; 4. One-time conversion of measurement / currency; 5. Closed-loop management of charging; 6. Valve closes when there is no fee and no electricity, and opens valve for charging.

[0011] The main invention methods or ideas of the technical solution are:

[0012] A valve (5) is installed on the water supply passage (53) of the mechanical water meter (50) so that it can automatically close even when there is no power when the water fee is not received, the water meter is attacked, the battery is out of power or the circuit fails, or the mechanical failure requires the valve to be closed to stop the water supply; the original stable state of the valve (5) is automatically in the closed state when not controlled; in the process of opening the valve (5), the driving arm (83) of the micro-reduction motor (19) drives the control arm (13) to rotate, and the magnet 2 (12) on the control arm (13) that has not rotated to the respective midlines above the magnetic slide valve (9) during the rotation, and the like-pole repulsion force between the magnet 1 (11) on the control arm (13) and the magnetic slide valve (9) and the opposite-pole attraction force between the magnet 1 (11) on the control arm (13) and the magnetic slide valve (9) provide the control arm (13) with a stable state. The kinetic energy of the valve is generated by rotating in the direction of closing the valve, so that when the valve (5) is opened, the energy required for closing the valve (5) is stored in the relative displacement of the magnet 1 (11), the magnet 2 (12) and the magnetic slide valve (9); the internal structure of the valve (5) is composed of a valve body (6), a valve frame (10), a rubber bowl (7), a lever (8), a magnetic slide valve (9), a support rod (27), a slide valve (32), and a self-closing valve spring (48); the self-closing valve spring (48) is on the slide valve (32), and the other end of the self-closing valve spring (48) acts on the valve frame (10); the rubber bowl (7) is provided with a pilot hole (28), a drain hole (29), and an ear (30); a cloth curtain (54) is provided inside the wall of the rubber bowl (7) as a reinforcing rib, and the bottom double-layer interlayer of the cloth curtain (54) A reinforcing plate (31) for increasing the compressive strength is fixed, a guide rod (35) is provided on the reinforcing plate (31), and the reinforcing plate (31) and the double-layer cloth curtain (54) are fixed together by a reinforcing strip (71); the outer structure of the valve (5) is composed of a control arm (13), a driving arm (83), a micro-reduction motor (19), and a valve bracket (63); wherein the control arm (13) is equipped with a magnet 1 (11) with inverted magnetic poles, a magnet 2 (12), a spring clamp 1 (15), a spring 1 (88), a spring clamp 3 (17), a spring 3 (90), and a power-off action rod (20); the driving arm (83 acts on a switch K2 (26) installed on the valve frame (10) through the power-off action rod (20); the metering gear box (49) is provided with a plurality of control arms (13), a driving arm (83), a micro-reduction motor (19), and a valve bracket (63); wherein the control arm (13) is equipped with a magnet 1 (11) with inverted magnetic poles, a magnet 2 (12), a spring clamp 1 (15), a spring 1 (88), a spring clamp 3 (17), a spring 3 (90), and a power-off action rod (20); the driving arm (83) acts on a switch K2 (26) installed on the valve frame (10) through the power-off action rod (20); The metering gear set (36) is meshed with the counting and quantitative wheel (64) through the transition gear (39); the counting and quantitative wheel (64) has a quantitative shaft (65); the control notch 1 (66) on the quantitative shaft (65) corresponds to the position of the spring clamping knife 1 (15) on the control arm (13); the control notch 3 (68) on the quantitative shaft (65) corresponds to the position of the spring clamping knife 3 (17) on the control arm (13); the fan-shaped groove (93) on the control arm (13) contains a rotating shaft (21); the fan-shaped groove (93) limits the driving range of the driving arm (83) on the control arm (13); the Internet of Things intelligent circuit board (1) in the water meter upper shell (51) has corresponding interactive communication or password communication, data exchange, control, charging, and protocol management functions;The invention also has a forced power-on and wake-up working function; the Internet of Things intelligent circuit board (1) has a power drive circuit capable of executing the valve opening (5) instruction and driving the micro-reduction motor (19); the IC card inside the circuit board (1) is assigned to each water meter a different and unique water meter code (62) or a QR code (61) and has corresponding storage information; the water meter has a communication method (60) for contacting the water supply management party on the outside; the numbers displayed on the mechanical wheel (52) of the water supply volume of each water meter and the internal IC card information of each water meter circuit board (1) correspond to the corresponding water meter information and management content in the centralized management computer; the power-on bump (34) on the control arm (13) acts on the power-on switch K1 (25) installed on the valve frame (10), and the circuit board (1) is powered on. When the circuit board (1) charges and meets the water supply conditions, the micro-reduction motor (19) is powered on and driven; pressing the emergency button (3) on the water meter housing (80) can power on the circuit board (1) and start the circuit board (1) to work.

[0013] The automatic reverse valve closing in case of a fault is explained. When the metering gear rotates during water supply, the spring clamp 3 (17) will slide over the control notch 3 (68) of the quantitative shaft (65). At this time, the control arm (13) presses the normally open switch K1 (25), the circuit board (1) is powered on, and the charging is performed. If the charging fails due to power outage, circuit failure, no water fee, etc., or an attack or mechanical failure has occurred, in short, the circuit cannot give a driving valve opening instruction, and the air supply continues until the end of this round of air supply. The spring clamp 3 (17) slides over the control notch 3 (68) of the quantitative shaft (65), the magnet 1 (11) on the control arm (13) and the magnetic slide valve (9) are attracted by opposite sex, and the self-closing valve spring (48) pushes the slide valve (32) to block the drain hole (29), and the valve (5) automatically closes.

[0014] The following is some explanation of the invention method or ideas:

[0015] In this invention scheme, since the charge management of the present invention is a potential signal of the mechanical switch closure, not a pulse signal, it will not disappear instantly. Only after the water fee is confirmed to be received, the valve opening instruction is issued. The valve opening instruction will not disappear after the valve opening task is completed. Moreover, there is no structure of repeated charging in one round of water supply, so it is a completely reliable charge management. The quantitative shaft (65) on the counting quantitative wheel (64) drawn from the water metering gear group (36), the control notch 1 (66), the control notch 3 (68) on the quantitative shaft (65) correspond to the spring clamping knife 1 (15), the spring clamping knife 3 (17) one by one. The magnet 1 (11) rotates to the top of the magnetic slide valve (9), not to the top of the complete overlap, but to the top of the center line of the two magnets, so that the magnetic slide valve (9) and the magnet 1 (11) are attracted and the magnet 2 (12) are repelled to point to the valve closing direction. One point worth mentioning is that in actual use of the IoT smart water meter of the present invention that can work without electricity, since the user has paid or stored enough water fees, or the water supply management party has set a sufficient pre-water quota, in each round of water supply (for example, set to 1 cubic meter), a water fee collection-driving-restoration to the initial state of a new round of water supply will be generated when the water supply reaches about half a cubic meter. This process is only the spring clamping knife 1 (15) retracting "bending" through the quantitative shaft (65), and the movement distance is only about a few millimeters.

[0016] As for adding a self-closing valve spring (48) above the internal structure slide valve (32) of the valve (5), the valve (5) will automatically close in the reverse direction without any other control force.

[0017] The implementation of the present invention has the following beneficial effects:

[0018] 1. The present invention realizes a unified mechanical measurement standard and measurement display reading, and completely solves the major structural defects of dual measurement, dual display, and dual control in the existing electronic water meter.

[0019] 2. The present invention realizes the off-line operation of household electrical instruments; breaks through the classic mode that traditional non-electrical quantity electrical measurement technology must rely on uninterrupted power supply for normal measurement operation; and improves the stability and reliability of water supply and measurement.

[0020] 3. The built-in non-electric valve of the present invention can still close the valve when water bills are not received, the water meter circuit has no power or is out of power, or there is a mechanical failure, electronic failure, or it is attacked and damaged, which greatly improves the quality and efficiency of management.

[0021] 4. The present invention realizes the closed-loop payment exchange between electronic currency and physical goods. Its input (payment and charging) and output (water supply) have a complete corresponding control relationship, that is, the result of the output end is fed back to the input end to realize closed-loop automatic control. In the process of water supply, the machine is powered on and the circuit is charged only when the water fee is charged. If the water fee cannot be collected, the water supply is not cut off immediately. Instead, various information transmission methods such as alarms, text messages, charging software, WeChat, etc. are used to notify the payment of the water fee, and the water supply continues to be paid. The valve is automatically closed stably when no electricity is needed. Once the electronic instruction is executed and completed, it has the property of being unconditionally forced to continue to be executed by the mechanical part and cannot be revoked, which is convenient for users to use and convenient for maintenance and management of water supply managers, unifying the interests of users and managers.

[0022] 5. The structure of charging once for each round of water supply of the present invention conveniently meets the people's livelihood requirements of the tiered water price policy management and N-times overdraft debt water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 Schematic diagram of the structure of an IoT smart water meter that can work without electricity

[0025] Figure 2 Schematic diagram of the automatic shutdown state of the valve of the IoT smart water meter that can work without electricity

[0026] Figure 3 Schematic diagram of the valve drive of the IoT smart water meter that can work without power restored to the open state

[0027] Figure 4 Mechanical process control diagram of IoT smart water meter that can work without electricity

[0028] Figure 5 Closed-loop payment exchange control diagram for charging and supplying water using IoT smart water meters that can operate without electricity

[0029] Figure 6 Circuit diagram of IoT smart water meter that can work without electricity

[0030] Figure 7 Schematic diagram of control arm structure

[0031] Figure 8 Schematic diagram of rubber bowl structure

[0032] Figure 1 It can be used as a summary of the specification.

[0033] In the figure, 1, circuit board 2, circuit antenna 3, emergency button 5, valve 6, valve body 7, rubber bowl 8, lever 9, magnetic slide valve 10, valve frame 11, magnet 1 12, magnet 2 13, control arm 15, spring clamp 1 17, spring clamp 3 19, micro reduction motor 20, power-off lever 21, rotating shaft 24, magnetic slide valve housing 25, switch K1 26, switch K2 27. Support rod 28. Pilot hole 29. Drain hole 30. Ear 31. Reinforcement plate 32. Slide valve 33. Magnetic slide valve magnet 34. Power-on protrusion 35. Guide rod 36. Metering gear set 37. Internal battery 38. External battery 39. Transition gear 40. IC card holder 41. Guide rod hole 42. Control arm gear 43. Magnetic slide valve seat 47. Card knife fixing screw 48. Self-closing valve spring 49. Metering gear box 50. Mechanical water meter 51. Mechanical water meter upper housing 52. Word wheel 53. Water supply passage 54. Cloth curtain 55. Mechanical water meter lower housing 56. Battery box 60. Communication method 61. QR code 62. Water meter code 63. Valve bracket 64. Counting and metering wheel 65. Metering shaft 66. Control notch 1 68. Control notch 3 69, sealing box cover 70, support (71) reinforcement strip 72, external antenna interface 74, sealing strip 78, water outlet end 79, water inlet end 80, IoT smart water meter housing 81, valve port 83, drive arm 84, control arm shaft 85, card knife 1 86, lever connecting rod 87, card knife 3 88, spring 1 90, spring 3 91, circuit board display 92, drive arm shaft 93, drive fan groove DETAILED DESCRIPTION

[0034] The present invention is implemented as follows: in a mechanical water meter, the water flow through the water meter is measured by the mechanical detection of the rotating impeller or the volumetric metering box of the water meter, and is transmitted in the metering gear box (49) through the gears of the metering gear set (36). The measured value is displayed as a mechanical digital wheel (52) or a digital number with a direction indicator on the top of the gear to display the cumulative flow and instantaneous flow readings; in the water flow measurement value transmission wheel, an appropriate measurement quantitative level is set, for example, a 15mm / 20mm diameter water meter commonly used in households is set on a 0.1 cubic meter metering wheel, which serves as a counting quantitative wheel (64), and is transmitted to the counting quantitative wheel (64) through the metering transition wheel (39). This counting quantitative wheel (64) rotates one circle to obtain 1 cubic meter of water flow, which serves as the basic unit of charge for each round of water supply. If a larger diameter water meter with a larger water supply volume is used, a counting quantitative wheel of a higher measurement level is correspondingly set. Two quantitative control notches, i.e., a control notch 1 (66) and a control notch 3 (68), are provided at different heights of the wheel shaft quantitative axis (65) of the counting quantitative wheel (64) for facilitating sequential cyclic control during rotation; corresponding to the control notch 1 (66) is a spring clamping knife 1 (15) on the control arm (13), and corresponding to the control notch 3 (68) is a spring clamping knife 3 (17); a spring 1 (88) is arranged in the spring clamping knife 1 (15), and a spring 3 (90) is arranged in the spring clamping knife 3 (17); the spring clamping knife 1 (15), the spring clamping knife 3 (17), the spring 1 (88), and the spring 3 (90) are assembled and mounted on the control arm (13).The control arm (13) is provided with a control arm gear (42) for engaging with the driving arm (83); the opening of the control arm (13) is achieved by powering up the circuit board (1), and after interactive password communication and successful charging, the power driving circuit of the circuit board is powered on, and the micro reduction motor (19) is powered on, driving the driving arm (83) to drive the control arm (13). The magnet 1 (11) on the control arm (13) and the magnetic slide valve magnet (33) of the magnetic slide valve (9) are attracted to each other through the valve frame (10), and the magnet 2 (12) and the magnetic slide valve magnet (33) of the magnetic slide valve (9) are repelled to each other with the same polarity. The magnetic slide valve (9) moves downward, and through the support rod (27), the lever (8) inserted into the ear (30) and the lever connecting rod (86), the rubber bowl (7) and the slide valve (32) are pulled upward, and the slide valve (32) is separated. The drain hole (29) is opened, the rubber bowl (7) is upward, the rubber bowl (7) leaves the valve port (81), the guide rod (35) is upward in the guide rod hole (41), the self-closing valve spring (48) is compressed, and the valve (5) is opened; when the control arm (13) is driven by the driving arm (83), the spring clamping knife 3 (17) and the spring clamping knife 1 (15) on the control arm (13) are pressed in turn to "bend" through the quantitative shaft (65) of the counting quantitative wheel (64) during rotation, and the magnet 2 (12) on the control arm (13) is driven to a position where the center line of both sides above the magnetic slide valve magnet (33) is less than; the driving arm (83) drives the middle pressure upper power-off action rod (20), the power-off action rod (20) touches the pressure switch K2 (26), the circuit board (1) is powered off, and the valve opening drive is completed once.During water supply, the magnet 2 (12) on the control arm (13) is subjected to the same-sex repulsion force of the magnetic slide valve magnet (33), which also becomes a force in the valve closing direction, and the force in the valve closing direction generated by the opposite-sex attraction between the magnet 1 (11) and the magnetic slide valve magnet (33). The power-off action rod (20) on the control arm (13) gradually leaves the driving arm (83) during rotation, and the switch K2 (26) returns to the normally closed state; when water supply continues, the spring knife 1 (15) gradually passes through the control gap 1 (66) from the quantitative shaft (65). The spring clamping knife 3 (17) enters the control notch 3 (68), the power-on protrusion (34) presses the circuit start switch K1 (25), the switch K1 (25) is closed, the circuit board (1) is powered on, interactive password communication occurs, and charging is carried out; when charging is successful, the power drive circuit of the circuit board (1) is energized, the micro-reduction motor (19) rotates, the drive arm (83) rotates, the drive control arm (13) rotates, and the above valve opening process is repeated, and the whole is restored to the initial state of the next round of valve opening; one round of water supply, the drive arm (83) rotates one circle, The control arm (13) rotates about 10 degrees, and the spring clamp knife 3 (17) and the spring clamp knife 1 (15) move only a few millimeters. If the charging is unsuccessful, the user is informed to pay the water fee through sound, light, text message, WeChat and various communication means, and water supply is continued until the water for which the water fee has been paid is supplied. The valve is closed without power supply, circuit board (1) and power drive circuit operation. The magnet 1 (11) of the control arm (13) and the magnet (33) of the magnetic slide valve are attracted by opposite poles, and the magnet 2 (12) is attracted by the magnet (33) of the magnetic slide valve. Under the action of the repulsive force, the spring knife 3 (17) on the control arm (13) passes through the control notch 3 (68), and the magnetic slide valve magnet (33) and the magnetic slide valve magnet (33) are attracted by opposite charges. The magnetic slide valve (9) moves upward, and through the lever (8), the support rod (27), and the lever connecting rod, the slide valve (32) moves downward to block the leakage hole (29). The water flows from the pilot hole (28) into the rubber bowl (7). The rubber bowl (7) moves downward, pressing the valve port (81). The guide rod (35) moves downward in the guide rod hole (41), and the valve (5) is closed. The power-on protrusion (34) on the control arm (13) presses the switch K1 (25), and the circuit board (1) is powered on and works or in standby mode. In normal water supply operation where water charges are not owed, banks deduct or water charges are settled uniformly, the situation of closing the valve is impossible. The circuit board (1) also does not work with electricity. Except for the charging process and the process of returning to the initial state of a new round of water supply, the entire water supply process is completely powered off.

[0035] The self-closing valve spring (48) can be a compression spring, or a leaf spring, a plate spring, a spring wire spring or the like that can store deformation elastic force.

[0036] The following is an explanation with reference to example diagrams. In the example diagrams, some minor parts or parts that do not need to be described in the original structure of the water meter are appropriately omitted; at the same time, the following descriptions are appropriately omitted for those that have been explained in detail above.

[0037] Figure 1 This is a schematic diagram of the mechanical control structure of the IoT smart water meter, combined with Figure 2 Schematic diagram of the power-off state of the IoT smart water meter valve, and Figure 3 The schematic diagram of the valve drive recovery open state of the IoT smart water meter that can work without power is used to illustrate; Figure 1 In the state, the driving arm (83) drives counterclockwise, driving the control arm (13) to rotate clockwise. After the driving arm (83) is engaged with the control arm gear (42), it continues to drive the control arm (13) to rotate clockwise, and the valve is opened. Figure 3 ; Figure 2 The valve was shut off because the water bill was not received. The whole process has been explained in detail above. Figure 4 This is a mechanical program control diagram of an IoT smart water meter that can work without electricity. This control diagram briefly explains the working process of the present invention, which has been described in detail above. Figure 5 This is the closed-loop payment exchange control diagram for charging and water supply of the present invention, that is, the control diagram for the closed-loop payment exchange between electronic currency and physical goods. This diagram clearly illustrates the payment exchange and process control of water supply management between electronic currency and physical goods in the present invention; its output end is fed back to the input end to realize unconditional closed-loop control, and charging and water supply are a complete input / output closed-loop control relationship; considering the particularity of water supply and people's lives, it can be set to overdraw N times a certain amount of cubic meters of water. If the water fee is not received, the water supply will not be cut off immediately, and water supply will continue to be provided to water users with multiple buffers. Figure 6 This is a block diagram of the circuit principle of an IoT smart water meter that can work without electricity. In the present invention, among the functions superimposed on the water meter, the function of the circuit is only to charge and restore the water meter to the initial state for the next round of water supply after charging; various types of IoT smart circuits superimposed on the water meter, such as smart IC cards (contact or contactless), remote transmission intelligence, wireless remote transmission, IoT smart circuits, etc., only have the most basic function of charging for the present invention and starting the power drive circuit to restore the water meter to the initial state for the next round of water supply after successful charging. Figure 7 It is a schematic diagram of the control arm structure. Figure 8 This is a schematic diagram of the rubber bowl structure, which has been described in detail above. The present invention has a simple structure and reliable control, so I will not go into details.

Claims

1. An IoT-enabled smart water meter capable of operating without electricity, comprising a mechanical water meter, a valve mounted on the water supply path of the mechanical water meter, and an IoT-enabled smart circuit superimposed on the mechanical water meter; The IoT smart water meter comprises a metering gear set (36) and a metering display wheel (52); the valve (5) comprises a valve body (6), an IoT smart circuit board (1) for controlling the valve (5), and a mechanical control mechanism of the valve (5); It is characterized in that The valve (5) installed on the water supply passage in the mechanical water meter is automatically closed when not controlled by the self-closing valve spring (48); the functions of the mechanical water meter are water supply, mechanical metering, mechanical character wheel (52) displaying metering volume, and closing the valve (5); the functions of the circuit board (1) are charging, fee display, management, and opening the valve (5); the valve (5) is automatically closed when there is no electricity when the water supply conditions are not met; during each round of water supply, the control arm (13) instantly powers the circuit board (1) to convert the physical quantity of the supplied water volume into the amount of electronic digital currency; after charging, the circuit board (1) powers the micro-reduction motor (19) and drives the control arm (13) to restore the water meter to the initial state of the new round of water supply, thereby realizing the closed-loop payment exchange between electronic currency and physical goods; when the valve (5) is opened, the energy required to close the valve (5) is stored in the relative displacement of the magnet 1 (11), the magnet 2 (12) and the magnetic slide valve (9), and in the compressive deformation of the self-closing valve spring (48).

2. The IoT smart water meter capable of operating without electricity according to claim 1, characterized in that: The internal structure of the valve (5) is composed of a valve body (6), a valve frame (10), a lever (8), a magnetic slide valve (9), a support rod (27), a slide valve (32), and a rubber bowl (7); the external structure of the valve (5) is composed of a valve bracket (63), a driving arm (83), a micro reduction motor (19), and a control arm (13).

3. The IoT smart water meter capable of operating without electricity according to claim 1, characterized in that: The micro reduction motor (19) drives the control arm (13) through the driving arm (83). The magnets 1 (11) and 2 (12) with inverted magnetic poles on the control arm (13) repel each other with the same polarity and attract each other with opposite polarities across the valve frame (10) and act on the valve (5) through the lever (8), thereby completing the opening and closing control of the valve (5).

4. The IoT smart water meter capable of operating without electricity according to claim 1, characterized in that: The control arm (13) is provided with a spring clamping knife 1 (15), a spring 1 (88), a spring clamping knife 3 (17), and a spring 3 (90), which correspond to the control notch 1 (66) and the control notch 3 (68) on the quantitative shaft (65) of the counting quantitative wheel (64) in a one-to-one manner, and interact with each other to control the water supply process.

5. The IoT smart water meter capable of operating without electricity according to claim 1, characterized in that: The Internet of Things circuit board (1) has corresponding interactive communication and password communication, wireless remote data transmission, data storage, data exchange, control, charging, and Internet of Things protocol management functions in order to achieve the functions of charging, management, and opening the valve (5); after successful charging, the water supply valve opening instruction is output; the Internet of Things intelligent circuit board (1) has a power drive circuit that can execute the valve opening instruction (5) and drive the micro reduction motor (19); the IC card inside the circuit board (1) is assigned a different and unique water meter code (62) to each water meter, which is associated with the QR code (91) information on the Internet of Things water meter housing (80); and there is a forced power-on awakening working function, and pressing the emergency button (3) on the Internet of Things intelligent water meter housing (80) can power on the circuit board (1) and start the circuit board (1) to work.

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