Meter electromechanical synchronous optical guide device and intelligent meter head using the device

Abstract

The present invention relates to a meter electromechanical synchronous optical guide device and an intelligent meter head using the device, the device includes a wireless communication photoelectric module and a code disk instantaneous position acquisition mechanism, the acquisition mechanism includes: a transmitting lamp for being arranged above the code disk, a receiving optical guide for being arranged at a U-shaped light turning point below the code disk, a receiving lamp for being arranged on one side above the code disk, and an optical receiving guide sleeve for establishing an optical path between the receiving optical guide and the receiving lamp; wherein, the light emitted by the transmitting lamp is formed into an optical message capable of identifying the instantaneous rotation position of the code disk after passing through the code disk, and the optical message is directed to the receiving lamp through the reflection of the receiving optical guide and the guidance of the optical receiving guide sleeve. Since the optical message transmission is extremely small, compared with the electrical connection or mechanical connection of the meter for external message transmission, the meter is rarely modified, and the exemplary device of the present invention also has the effect of synchronous flow message remote transmission of the Internet of Things.

Description

Technical Field

[0001] The invention relates to the technical field of external transmission of flow meter values, and in particular to an electromechanical synchronous optical guide device for a meter and an intelligent meter head using the device. Background Art

[0002] For example, water meters and other gas and liquid meters traditionally use mechanical components to calculate flow and display it on the meter head display glass. Usually, the meter is read visually to obtain the displayed count on the meter. When the meter is installed indoors, the occupant's permission is required to enter the room to read the meter, which is quite inconvenient.

[0003] As a pioneer and R&D, production and sales entity in the smart meter reading segment, the applicant has proposed a number of related patents, including Chinese patents CN105957318A, CN109738029A, CN209214700U, CN206461612U, CN209783674U, CN209264048U, CN209214701U and other related prior arts, reading the flow value of the meter in various ways. Basically, it is hoped that the mechanical structure of the existing meter will not be excessively changed and the meter will maintain good sealing.

[0004] Conventional communication methods between the meter and the wireless communication module can distinguish mechanical messages, electrical messages, magnetic messages, optical messages, or image recognition. Mechanical message communication will significantly change the mechanical structure of the existing meter; electrical message communication requires the installation of circuit boards or other electrical components in the meter, which has poor environmental resistance; magnetic message communication is easily interfered by electromagnetic effects; image recognition communication requires a large amount of image transmission, requires relatively large calculations, and may cover the display surface of the meter, and is easily affected by external light and ambient color to obtain the clarity of the dashboard image. Judging from the current industrial level, optical message communication is more able to meet the requirements of not destroying or significantly changing the mechanical structure of the existing meter, but it is still necessary to continue to study how to avoid the shortcomings of other communication methods, including installing circuit boards or other electrical components in the meter, being easily interfered by electromagnetic effects, and the amount of internal message communication data to the wireless communication module is too large.

[0005] The optical information transmission of the flow meter in the prior art adopts the optical transmission method. It can be seen in the Chinese invention patent application number CN104428639A, which discloses a flow meter for measuring the liquid capacity of a faucet, which is used to measure the amount of water discharged from the faucet. The device includes a ruler with a predetermined flow rate. The diverter is used to divert a small part of the water to a separate measuring chamber. The liquid level is recorded optically and displayed to the user through the optical guide. The measuring chamber is automatically emptied by a pressure-activated reset mechanism, so when the flow is turned off, the water meter is empty. The diverter limits the diversion of fluid from the faucet so that a predetermined portion of the fluid enters a measuring chamber; wherein the measuring chamber includes a container in which the fluid is placed to display the total volume V of the fluid flowing through the diverter in a predetermined time interval, and the total volume V of the fluid can be expressed by the relationship V=f(s)×s+b, wherein s represents the liquid level, b is a bias constant, and f(s) includes a simple proportional constant derived from the geometry of the measuring chamber and the diverter and an arbitrary weighting function; and a fluid outlet that provides an outlet for the fluid from the faucet; the volumetric flow meter is also defined as including a reset structure with a pressure chamber, which can change its shape according to the flow pressure flowing through the pressure chamber, so that it can directly or indirectly block or retract the opening of the measuring chamber, thereby storing fluid or discharging fluid, so that the flow meter has the ability to automatically empty after the fluid is closed. It may also include a light guide member connected to the main body shell, in order to visually convey the liquid level of the measuring chamber, the liquid level can be read more easily, the light guide member terminates in a queue at the other end of the display end of the measuring meter, and the characteristic that the refractive index of water is greater than that of air is used to make the final result displayed at the liquid level in the display end. It can be seen from this that the related prior art adopts a design in which the light receiving end of the light guide member directly points to the liquid level at different heights in the shell, and is completely different from the mechanical water meter design of the current commercial meter, and cannot obtain large metering data.

[0006] The inventor of the present invention proposed a single-code disk counting sensor in Chinese invention patent application number CN110426066A, including: a counting component for acquiring counting data; a data processing and transmission component for receiving and processing counting data, and outputting the processed counting data; a power supply component for providing electrical energy to the counting component and the data processing and transmission component; the counting component includes a protective shell, a single code disk rotatably connected to the protective shell through a rotating component, and a counting unit arranged in the protective shell, and the counting unit is electrically connected to the data processing and transmission component and the power supply component; the counting unit includes: an optical output circuit for outputting an optical signal; an optical receiving circuit for receiving an optical signal output by the optical output circuit; the optical output circuit and the optical receiving circuit are located on both sides of the single code disk. In the related prior art, the code disk rotates in the space between the light output circuit board and the light receiving circuit board of the counting unit, wherein the code disk originally located in the dashboard of the water meter is adjusted in spatial position configuration to the outside of the transparent glass above the dashboard of the water meter. In addition to changing the mechanical transmission relationship of the code disk, the light output circuit board and the light receiving circuit board located above and below the code disk also need to be precisely aligned. If there is a slight displacement error or horizontal error, the receiving lamp located at different circuit board heights cannot receive the light signal emitted by the transmitting lamp. Summary of the invention

[0007] The main purpose of the present invention is to provide an electromechanical synchronous optical device for a meter. The main improvement is that there is no need to change the relative position of the code disk inside the meter to the outside of the meter, and it can solve the problem that optical messages cannot be transmitted accurately and it is difficult to quickly transmit small data to the wireless communication structure outside the meter.

[0008] The second and third main purposes of the present invention are to provide an intelligent meter head and an assembly method thereof, so as to realize the information communication between the wireless communication optoelectronic module and the meter only by optical message transmission connection, which is easy to assemble and does not have the problem of alignment deviation caused by separate assembly of the transmitting lamp and the receiving lamp.

[0009] The main purpose of the present invention is achieved through the following technical solutions:

[0010] A kind of electromechanical synchronous optical guide device for a meter is proposed, comprising: a wireless communication photoelectric module and a code disk instantaneous position acquisition mechanism. The wireless communication photoelectric module is used to wirelessly transmit the metering information of the meter to the outside; the code disk instantaneous position acquisition mechanism, taking the code disk of the meter as the position reference, comprises: a transmitting lamp for being arranged above the code disk, a receiving optical guide for being arranged at a U-shaped light turning point below the code disk, a receiving lamp for being arranged on one side above the code disk, and a light receiving guide sleeve for establishing a light path between the receiving optical guide and the receiving lamp; wherein the code disk instantaneous position acquisition mechanism is configured as follows: the light emitted by the transmitting lamp is formed into an optical message capable of identifying the instantaneous rotation position of the code disk after passing through the code disk, and the optical message is reflected by the receiving optical guide and guided by the light receiving guide sleeve and emitted to the receiving lamp, so that the wireless communication photoelectric module can calculate the optical messages of different time periods to obtain the metering information of the meter that can be wirelessly transmitted.

[0011] By adopting the above technical solution, using the receiving optical guide for the U-shaped light turning part set below the code disk and the optical receiving guide sleeve for establishing the optical path between the receiving optical guide and the receiving lamp, the receiving lamp can be set on one side above the code disk, so that the transmitting lamp and the receiving lamp are both located outside the meter. The optical message of the small data optical transmission is read by the wireless communication photoelectric module to read the instantaneous position of the code disk in different time periods, which can correspond to the flow scale of the meter, and then calculate the metering information of the meter. Therefore, the code disk does not need to be modified to the outside of the meter, and the inside of the meter does not need to be equipped with a circuit board or other electrical components with metering functions. The transmitting lamp and the receiving lamp used for code reading are pre-positioned, and there is no displacement deviation in assembly. Specifically, the optical message transmitted by the meter to the wireless communication photoelectric module is a group of position codes composed of binary light and dark signals, representing the corresponding scale of the code disk at the instant, and the amount of optical transmission data is extremely small.

[0012] In a preferred example, the present invention can be further configured as follows: the transmitting light and the receiving light are integrated on the same side of the circuit board of the wireless communication optoelectronic module.

[0013] By adopting the above-mentioned preferred technical features, the circuit board of the wireless communication optoelectronic module can be used to pre-integrate the setting positions of the transmitting lamp and the receiving lamp on the same side of the board, and the relative positions of the transmitting lamp and the receiving lamp are pre-determined. In combination with a pre-molded optical receiving guide sleeve, the light receiving port and the light return port of the receiving optical guide of the U-shaped light turn can be aligned with the light emitting port of the transmitting lamp and the light receiving port of the receiving lamp respectively, so that the wireless communication optoelectronic module can be set on the outside of the meter in the form of a pendant, and there can be no electrical interconnection and mechanical linkage between the two for metering transmission.

[0014] In a preferred example, the present invention can be further configured as follows: the transmitting light and the receiving light are driven by the main control chip of the wireless communication optoelectronic module arranged on the circuit board; the wireless communication optoelectronic module is constructed as an external accessory of the meter.

[0015] By adopting the above-mentioned preferred technical features, the main control chip arranged on the circuit board is used to drive the transmitting light and the receiving light, and the wireless communication optoelectronic module located outside the meter is used as the active component. An adjustable flow calculation rule of the meter is formulated and the metering information corresponding to the meter can be corrected or reset by wireless transmission to the outside, thereby correcting the flow error of the mechanical transmission inside the meter.

[0016] In a preferred example, the present invention can be further configured as follows: the number of the transmitting lamps is several, the number of the receiving lamp is one, the light from the several transmitting lamps is emitted in a scanning manner, and the irradiation position of the transmitting lamp is aligned with the radiation path divided by angular scales equal to the rotation axis of the code disk.

[0017] By adopting the above-mentioned preferred technical features, using a plurality of transmitting lamps and a single receiving lamp, the transmitting lamp light is emitted in a scanning manner, and after passing through the code disk, it is recovered through a common return port to form a set of binary scale codes corresponding to the instantaneous position of the code disk, and there is no problem of code loss or error caused by assembly alignment errors.

[0018] In a preferred example, the present invention can be further configured as follows: the light receiving guide sleeve has a first light receiving hole aligned with the light receiving port of the receiving lamp and a receiving groove for accommodating the internal rotation of the code disk, and the receiving groove is also provided with a plurality of first emitting light holes arranged in a fan shape, aligned with the light emitting port of the emitting lamp; specifically, the light receiving guide sleeve has a teardrop plate shape.

[0019] By adopting the above preferred technical features, the light receiving guide sleeve is provided with a receiving groove and a first receiving light hole by utilizing the specific structure of the light receiving guide sleeve, and the relative position of the code disk and the return light channel is determined, so that the light can be converted into an optical message that accurately corresponds to the instantaneous position of the code disk after passing through the transmitting light channel. Specifically, by utilizing a water drop plate-shaped light receiving guide sleeve, the receiving groove can be provided in the large circular part of the water drop plate, and the first receiving light hole can be provided in the small circular part of the water drop plate. The light receiving guide sleeve occupies less space on the instrument panel of the meter, and the light receiving guide sleeve can be positioned in the instrument panel.

[0020] In a preferred example, the present invention can be further configured as follows: the code disk instantaneous position acquisition mechanism includes: a light emitting guide sleeve used to be arranged between the emitting lamp and the code disk, and used to shield the light receiving guide sleeve; specifically, the light emitting guide sleeve is provided with a plurality of second emitting light holes arranged in a fan shape and aligned with the first emitting light hole, and a second receiving light hole aligned with the first receiving light hole; as the code disk rotates, the code disk can block or not block the light channel between the first emitting light hole and the second emitting light hole one by one.

[0021] By adopting the above-mentioned preferred technical features and utilizing the specific structure of the light emitting guide sleeve, an emitting light channel and a recovering light channel are provided between the emitting lamp and the code disk, and an optical channel of the light receiving guide sleeve is extended outside the meter to reduce light leakage between the outside of the meter and the wireless communication optoelectronic module.

[0022] In a preferred example, the present invention can be further configured as follows: the scanning order of the plurality of emitting lamps is along or against the rotation direction of the code disk from the first light channel that can be blocked by the code disk to the last light channel in the continuous sequence.

[0023] By adopting the above-mentioned preferred technical features and using a specific scanning sequence, the last emitting light in the scanning sequence can just represent the last scale value of the code disk at the moment when the scanning cycle ends. Taking the scale of ten as an example, when the code disk is completely blocked, it can be set as scale 0. The identification code number of the light message is

[00000] , 1 is light passing, and 0 is no light passing; when only the first emitting light has a signal (the rotation speed of the code disk cannot exceed one scale value of the scanning cycle), it can represent 1, and the identification code numbers are

[00001] ; the second to fifth emitting lights start to have signals one by one, representing 2, 3, 4, 5, and the identification codes are

[00011] , [001 ... ],

[01111] ,

[11111] ; when the scale reaches 5, the first to fifth emitting lights are all through and not blocked by the code disk. The code disk continues to rotate based on the flow rate, and the first emitting light is blocked again and there is no signal to represent scale 6, and the identification code number is

[11110] ; the second to fifth emitting lights are blocked one by one and there is no signal, representing 7, 8, 9, 0 respectively, and the identification codes are

[11100] ,

[11000] ,

[10000] ,

[00000] respectively. The above setting rules depend on a calculation rule of the wireless communication optoelectronic module.

[0024] Alternatively, the code disk can be set to scale 0 as a rule, and the identification code of the light message is

[11111] , 1 means light is transmitted, 0 means no light is transmitted, and the identification code represents the light signal of the first to fifth transmitting lights from right to left respectively; when only the first transmitting light has no signal (the rotation speed of the code disk cannot rotate half a circle in the scanning cycle), it can represent 1, and the identification code is

[11110] ; the second to fifth transmitting lights have no signal one by one, representing 2, 3, 4, 5, and the identification code is

[1110] respectively. 0],

[11000] ,

[10000] ,

[00000] ; when it reaches scale 5, the first to fifth transmitting lights are completely blocked by the code disk, and the code disk continues to rotate based on the flow rate, and the first transmitting light starts to have signals again to represent scale 6, and the identification code number is

[00001] ; the second to fifth transmitting lights start to have signals one by one to represent 7, 8, 9, 0 respectively, and the identification codes are

[00011] ,

[00111] ,

[01111] ,

[11111] . The above setting rules depend on another calculation rule of the wireless communication optoelectronic module, and can realize the calculation conversion from binary code to decimal scale outside the meter. If other non-specified identification code numbers (such as

[00100] ...etc.) appear, indicating that the value is abnormal, it is necessary to check whether there is a problem with the transmitting light failure, optical channel offset or flow abnormality.

[0025] In a preferred example, the present invention can be further configured as follows: the receiving optical guide is a claw-shaped structure, having a plurality of light receiving ports located at the claw tip facing upward, a common light return port located at the claw root facing upward, and a plurality of claw rods connecting the individual light receiving ports to the light return ports, and the light receiving ports are arranged in a fan shape; preferably, the receiving optical guide is formed with an inclined surface or a reflective structure at the bottom of the claw root that fully refracts the light transmitted by the plurality of claw rods upward.

[0026] By adopting the above-mentioned preferred technical features and utilizing the specific claw-shaped structure of the receiving optical guide, the light receiving port with the claw tip facing upward can be positioned at the first emitting light hole of the optical receiving guide sleeve, and the common light return port with the claw root facing upward can be positioned at the first receiving light hole of the optical receiving guide sleeve, thereby achieving U-shaped folding of multiple emitted lights and collecting them into codes.

[0027] The second main purpose of the present invention is achieved through the following technical solutions:

[0028] A smart meter head is proposed, including a meter electromechanical synchronous optical guide device and a meter as described in any of the above technical solutions. The meter is a mechanical meter, and the information transmission method from the meter to the wireless communication optoelectronic module is only a connection of optical message transmission.

[0029] By adopting the above technical solution and utilizing the specific structure of the electromechanical synchronous optical device of the meter, the information communication between the meter and the wireless communication optoelectronic module is achieved by only optical message transmission, without destroying or changing the sealing of the original meter.

[0030] The third main purpose of the present invention is achieved through the following technical solutions:

[0031] A method for assembling the above-mentioned smart meter head is proposed, characterized in that it includes the following steps:

[0032] providing said meter;

[0033] Installing the receiving light guide and the light receiving guide sleeve of the code disk instantaneous position acquisition mechanism in the meter;

[0034] The wireless communication optoelectronic module is installed on one side of the meter in a hanging manner, wherein the wireless communication optoelectronic module, the transmitting light and the receiving light are pre-assembled in a main shell, and the light-emitting port of the transmitting light and the light-receiving port of the receiving light are located on the same side of the main shell that can be stacked on the code disk.

[0035] By adopting the above technical solution and using specific assembly steps, the simple assembly of the smart meter head can be completed.

[0036] In summary, the present invention includes at least one of the following technical effects that contribute to the prior art:

[0037] 1. Realize the synchronous reading of digital optical information of the meter;

[0038] 2. The meter is modified to have the function of wirelessly transmitting the meter's metering information to the outside, but it does not involve modifying the code disk to the outside of the meter, nor does it involve modifying the circuit board to the inside of the meter;

[0039] 3. In the specific application of the meter as a mechanical water meter, it is not necessary to power the meter internally, nor is it necessary to install any mechanical linkage device externally;

[0040] 4. The optical information transmitted by the meter to the wireless communication optoelectronic module corresponds to an extremely small amount of identification code data corresponding to the instantaneous position of each code disk, compared with the amount of data transmitted for the image photo. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A three-dimensional schematic diagram of an intelligent meter head including an electromechanical synchronous optical guide device of a meter in some preferred embodiments of the present invention is shown;

[0042] Figure 2A schematic exploded view of a smart meter head including an electromechanical synchronous optical guide device of a meter in some preferred embodiments of the present invention is shown;

[0043] Figure 3 A three-dimensional exploded schematic diagram of an electromechanical synchronous optical guide device for a meter in some preferred embodiments of the present invention is shown;

[0044] Figure 4 A three-dimensional exploded schematic diagram of components of an electromechanical synchronous optical guide device of a meter in some preferred embodiments of the present invention is shown;

[0045] Figure 5 A three-dimensional schematic diagram (A) and a rotating surface schematic diagram (B) of a code disk used in an electromechanical synchronous light guide device of a meter in some preferred embodiments of the present invention are shown;

[0046] Figure 6 A schematic diagram showing the position correspondence of an electromechanical synchronous light-guiding device of a meter encoding the instantaneous position of a code disk in some preferred embodiments of the present invention;

[0047] Figure 7 A schematic plan view (A), a schematic longitudinal view (B) and a plan view (C) of an optical channel of a receiving optical guide of an electromechanical synchronous optical guide device of a meter in some preferred embodiments of the present invention are shown;

[0048] Figure 8 Schematic diagrams (A) to (E) showing a receiving light guide member of a meter electromechanical synchronous light guide device in a scanning working state in some preferred embodiments of the present invention;

[0049] Fig. 9 A three-dimensional schematic diagram showing a wireless communication optoelectronic module of a meter electromechanical synchronous optical device in some preferred embodiments of the present invention pre-assembled into a mounting pendant;

[0050] Fig.10 A block diagram showing a method for assembling a smart meter head in some preferred embodiments of the present invention;

[0051] Fig.11 The present invention is illustrated in some preferred embodiments of the present invention by a method for assembling a smart meter head corresponding to Fig.10 A three-dimensional schematic diagram of the meter provided in step S1;

[0052] Fig.12 The present invention is illustrated in some preferred embodiments of the present invention by a method for assembling a smart meter head corresponding to Fig.10 Step S2 is a three-dimensional schematic diagram of installing the receiving light guide and the light receiving guide sleeve in the meter;

[0053] Fig.13The present invention is illustrated in some preferred embodiments of the present invention by a method for assembling a smart meter head corresponding to Fig.10 Step S3 is a three-dimensional schematic diagram of installing the wireless communication optoelectronic module on one side of the outside of the meter in the form of a pendant.

[0054] Figure numerals: 10, wireless communication optoelectronic module; 11, circuit board; 12, main control chip; 13, main body shell; 14, sealing ring; 15, elastic limiter; 16, battery; 17, waterproof end cover; 18, flip cover; 19, snap ring pin; 20, code disk instantaneous position acquisition mechanism; 21, transmitting light; 22, receiving light; 30, receiving light guide; 31, light receiving port; 32, light return port; 33, claw rod; 34, claw tip; 35, claw root; 36, inclined plane; 37, positioning point; 40, light receiving guide sleeve; 41, first transmitting light hole; 42, first receiving light hole; 43, accommodating groove; 50, light transmitting guide sleeve; 100, meter; 110, code disk; 111, position coding gap; 112, opening side; 113, closing side; 120. Instrument panel; 121. Instrument transparent sheet; 122. Snap ring. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments for understanding the inventive concept of the present invention, and cannot represent all the embodiments, nor are they interpreted as the only embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field on the premise of understanding the inventive concept of the present invention are within the scope of protection of the present invention.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement, etc. between the components in a certain posture. If the specific posture changes, the directional indications will also change accordingly. In order to facilitate the understanding of the technical solution of the present invention, the electromechanical synchronous optical guide device of the meter of the present invention and the intelligent meter head using the device are further described and explained in detail below, but they are not limited to the protection scope of the present invention.

[0057] The drawings only illustrate the common parts of multiple embodiments, and the parts with differences or distinctions are described in text or presented in comparison with the drawings. Therefore, based on the industrial characteristics and technical essence, technicians familiar with the field should correctly and reasonably understand and judge whether the individual technical features described below or any combination of them can represent the same embodiment, or whether multiple technical features with mutually exclusive technical essences can only represent different variant embodiments.

[0058] Figure 1 and Figure 2 Draw a stereoscopic and exploded view of a meter electromechanical synchronous light guide device installed on a meter. Figure 3 Draw an exploded perspective view of the electromechanical synchronous optical device of the meter. The electromechanical synchronous optical device of the meter includes a wireless communication photoelectric module 10 and a code disk instantaneous position acquisition mechanism 20. The wireless communication photoelectric module 10 is used to wirelessly transmit the metering information of the meter 100 to the outside. The wireless communication photoelectric module 10 basically includes a circuit board 11 and a main control chip 12 installed on the circuit board 11. The specific structure and operation mode of wireless signal transmission can use Wi-Fi or Bluetooth technology, which is a prior art and will not be described in detail. Figure 1 The meter electromechanical synchronous optical device including the wireless communication optoelectronic module 10 can be combined with one side of the meter 100 in the form of an external hanger to assemble into an intelligent meter head. The meter 100 can be a mechanical meter. The information transmission method from the meter 100 to the wireless communication optoelectronic module 10 is only a connection of optical message transmission. The meter is a flow meter with a meter-shaped structure that displays flow rate. In this example, refer to Figure 2 The meter 100 includes a code disk 110 and an instrument panel 120 installed in the meter. The instrument panel 120 has multiple pointers that can display flow rates. The instrument panel 120 is sealed with a transparent sheet 121 through a clamp ring 122 above the instrument panel 120 to seal the internal space of the meter. The rotation of the code disk 110 is synchronized with one of the pointers. Usually, the meter 100 has a gas-liquid flow inlet terminal and a gas-liquid flow outlet terminal. The meter 100 shown in the figure is a mechanical water meter. However, in different examples, the application of the present invention is not limited to water metering, but can also be used for fuel and natural gas metering. One rotation unit of the code disk 110 only needs to correspond to a flow value determined in advance.

[0059] See also Figure 2 and Figure 3 The code disk instantaneous position acquisition mechanism 20 is used to acquire the instantaneous position of the code disk 110, with the code disk 110 of the meter 100 as the position reference, and includes: a transmitting lamp 21 for being arranged above the code disk 110, a receiving light guide 30 for being arranged at a U-shaped light turning point below the code disk 110, and a receiving lamp 22 for being arranged on one side above the code disk 110, and a light receiving guide sleeve 40 for establishing a light path between the receiving light guide 30 and the receiving lamp 22. Not limited to, the number of transmitting lamps 21 can be one or more, and the number of receiving lamps 22 can be one or more. In this example, the number of transmitting lamps 21 is several, and the number of transmitting lamps 21 is one.

[0060] in, Figure 4The components of the instantaneous position acquisition mechanism 20 of the code disk installed in the meter 100 may include a receiving light guide 30 and a light receiving guide sleeve 40. Figure 3 and Figure 4 The code disk instantaneous position acquisition mechanism 20 is configured as follows: the light emitted by the transmitting lamp 21 passes through the code disk 110 to form an optical message that can identify the instantaneous rotation position of the code disk 110, and the optical message is reflected by the receiving optical guide 30 and guided by the optical receiving guide sleeve 40 to the receiving lamp 22, so that the wireless communication optoelectronic module 10 calculates the optical messages in different time periods to obtain the metering information of the meter 100 that can be wirelessly transmitted.

[0061] The implementation principle of this embodiment is: using the receiving light guide 30 for the U-shaped light turning arranged below the code disk 110 and the light receiving guide sleeve 40 for establishing the light path between the receiving light guide 30 and the receiving lamp 22, like the transmitting lamp 21 arranged above the code disk 110, the receiving lamp 22 can be arranged on one side above the code disk 110, so that the transmitting lamp 21 and the receiving lamp 22 are both located outside the meter 100, and the optical information of the small data optical transmission is read by the wireless communication photoelectric module 10 to read the instantaneous position of the code disk in different time periods, that is, it can correspond to the flow scale of the meter 100, and then calculate the metering information of the meter 100. Therefore, the code disk 110 does not need to be modified to the outside of the meter 100, and the inside of the meter 100 does not need to be equipped with a circuit board 11 or other electrical components with metering functions, and the transmitting lamp 21 and the receiving lamp 22 for code reading are pre-positioned, and there is no displacement deviation of assembly. Specifically, the optical message transmitted from the meter 100 to the wireless communication optoelectronic module 10 is a set of position codes composed of binary light and dark signals, representing the corresponding scale of the code disk 110 at an instant, and the amount of optical transmission data is extremely small.

[0062] In a specific structure of a meter 100 in which the wireless communication optoelectronic module 10 is adapted, for example, a mechanical water meter, the wireless communication optoelectronic module 10 includes a main housing 13 for accommodating a circuit board 11. The main control chip 12 and other communication components are mounted on the circuit board 11. The main housing 13 also forms a ring buckle outside the space for accommodating the circuit board 11, which is used to be sleeved on the meter 100. The ring buckle has an opening to reveal the dashboard 120 of the meter 100. The main housing 13 is provided with a sealing ring 14 at the periphery of the space for accommodating the circuit board 11, so as to increase the waterproofness of the waterproof end cover 17 combined with the main housing 13, or / and, to increase the anti-collision property of the circuit board 11 in the main housing 13. An elastic stopper 15 may be provided above the circuit board 11, for elastically applying force to the circuit board 11 to press it downward. The main housing 13 may also reserve a space for installing a battery 16 in the space for accommodating the circuit board 11, and the battery 16 provides the power required by the wireless communication optoelectronic module, or other common power sources may be used. During assembly, when the waterproof end cover 17 is combined with the main housing 13, the waterproof end cover 17 may have a chamber corresponding to the elastic limiter 15, and the elastic limiter 15 applies pressure to one side of the circuit board 11. The waterproof end cover 17 has a flange facing the ring buckle opening, and the ring buckle of the main housing 13 is provided with a flip cover 18, which can cover the opening of the ring buckle and can also press the flange of the waterproof end cover 17 (such as Figure 2 As shown in FIG. 1 , a plurality of snap ring pins 19 are used to fix the already covered flip cover 18, thereby completing the pressure on the other side of the circuit board 11. By applying pressure on both sides to keep the circuit board 11 flat, the protruding plate portion of the circuit board 11 used to combine with some components of the code disk instantaneous position acquisition mechanism 20 can be evenly pressed and extended to the instrument panel 120. The above specific description of the wireless communication optoelectronic module 10 is an example description and is not used to limit the present invention. Corresponding to meters 100 with different structures, the wireless communication optoelectronic module 10 may have various possible changes.

[0063] In the preferred example, see Figure 2 and Figure 3 , the transmitting light 21 and the receiving light 22 are integrated on the same side of the circuit board 11 of the wireless communication optoelectronic module 10, and the specific position in the example is the protruding plate portion of the circuit board 11. By utilizing the circuit board 11 of the wireless communication optoelectronic module 10 to pre-integrate the transmitting light 21 and the receiving light 22 on the same side of the board, the relative position of the transmitting light 21 and the receiving light 22 is predetermined, and the combination of the pre-molded optical receiving guide sleeve 40 is combined, so that the light receiving port 31 and the light return port of the receiving optical guide member 30 of the U-shaped light turning can be aligned with the light emitting port of the transmitting light 21 and the light receiving port of the receiving light 22 respectively, so that the wireless communication optoelectronic module 10 is set on the outside of the meter 100 in the form of a pendant, and there can be no electrical interconnection and mechanical linkage between the two for metering transmission.

[0064] In a preferred example, the transmitting light 21 and the receiving light 22 are driven by the main control chip 12 of the wireless communication optoelectronic module 10 disposed on the circuit board 11; the wireless communication optoelectronic module 10 is configured as an external accessory of the meter 100. The transmitting light 21 and the receiving light 22 are driven by the main control chip 12 disposed on the circuit board 11, and the wireless communication optoelectronic module 10 located outside the meter 100 is used as an active component to formulate an adjustable flow calculation rule of the meter 100 and wirelessly transmit to the outside to correct or reset the metering information corresponding to the meter 100, which can also be used to correct the flow error of the mechanical transmission inside the meter 100.

[0065] In a preferred example, the number of the transmitting lamps 21 is several, the number of the receiving lamp 22 is one, and the light of the several transmitting lamps 21 is emitted in a scanning manner, and the irradiation position of the transmitting lamp 21 is aligned with the radiation path of the code disk 110 divided by the equiangular scale of the rotation axis (see Figure 6 ). By using a plurality of transmitting lamps 21 and a single receiving lamp 22, the light of the transmitting lamp 21 is emitted in a scanning manner, and after passing through the code disk 110, it is recovered through a common return port to form a set of binary scale codes corresponding to the instantaneous position of the code disk, and there is no problem of code drop or error caused by assembly alignment errors. In a variation of this example, corresponding to the adjustment of different carry scales, the light receiving surface (corresponding to the light receiving port 31 of the receiving light guide 30) can be changed from 5 to 1, and the light reflecting surface (corresponding to the return port 32 of the receiving light guide 30) can be changed from 1 to 5. In different application scenarios, the light receiving surface can be changed from N to 1, and the light reflecting surface can be changed from 1 to N, where N is a positive integer greater than or equal to 2. As long as the instantaneous position of the code disk 110 can be determined, the number of transmitting lamps 21 and receiving lamps 22 can be arbitrarily changed.

[0066] In the preferred example, see Figure 3 and Figure 4The light receiving guide sleeve 40 has a first light receiving hole 42 aligned with the light receiving port of the receiving lamp 22 and a receiving groove 43 for accommodating the code disk 110 to rotate inside. The receiving groove 43 also has a plurality of first light emitting holes 41 arranged in a fan shape, aligned with the light emitting port of the emitting lamp 21; specifically, the light receiving guide sleeve 40 has a water drop plate shape. The receiving groove 43 and the first light receiving hole 42 are provided by using the specific structure of the light receiving guide sleeve 40, and the relative position of the code disk 110 and the return light channel is determined, so that the light can be converted into an optical message that accurately corresponds to the instantaneous position of the code disk after passing through the emitting light channel. Specifically, by using the light receiving guide sleeve 40 in the shape of a water drop plate, the receiving groove 43 can be provided in the large circular part of the water drop plate, and the first light receiving hole 42 can be provided in the small circular part of the water drop plate. The light receiving guide sleeve 40 occupies a small space on the dashboard of the meter 100, and the light receiving guide sleeve 40 can be positioned in the dashboard.

[0067] In a preferred example, the code disk instantaneous position acquisition mechanism 20 includes: a light emitting guide sleeve 50 for being arranged between the emitting lamp 21 and the code disk 110, for shielding the light receiving guide sleeve 40; specifically, the light emitting guide sleeve 50 is provided with a plurality of second emitting light holes arranged in a fan shape and aligned with the first emitting light hole 41 and a second receiving light hole aligned with the first receiving light hole 42; as the code disk 110 rotates, the code disk 110 can block or not block the light channel between the first emitting light hole 41 and the second emitting light hole one by one. By utilizing the specific structure of the light emitting guide sleeve 50, an emitting light channel and a recycling light channel are provided between the emitting lamp 21 and the code disk 110, and the light channel of the light receiving guide sleeve 40 is extended and connected to the outside of the meter 100, thereby reducing light leakage between the outside of the meter 100 and the wireless communication optoelectronic module 10.

[0068] See also Figure 5 The code disc 110 specifically comprises an axis rod and an axis disc connected to the axis rod, and the axis disc is formed with a position coding notch 111 for opening the light channel. The two sides of the position coding notch 111 are respectively an opening side 112 for opening the light channel when rotating and a closing side 113 for closing the light channel when rotating. In this example, the notch width of the position coding notch 111 is close to or equal to 180 degrees. Taking decimal as an example, refer to Figure 6 , Figure 6The center of the circle is exactly aligned with the rotation axis of the code disk. The circumference of the code disk is divided into ten scales from 0 to 9. The opening of the light channel is located on the path of the scale radiation line, for example, scales 1 to 5. In a static state, the position coding notch 111 of the code disk 110 can just reveal the light channel of scales 1 to 5. As the code disk 110 rotates, the light channels of scales 1 to 5 show an orderly change from opening one by one to fully open and then closing one by one to fully closed, so as to form an identification code corresponding to the flow change.

[0069] In a preferred example, Figure 3 and Figure 4 Related References Figure 7 The receiving optical guide 30 is a claw-shaped structure, having a plurality of light receiving ports 31 located at the claw tip 34 facing upward, a common light return port 32 located at the claw root 35 facing upward, and a plurality of claw rods 33 connecting the individual light receiving ports 31 to the light return port 32. The light receiving ports 31 are arranged in a fan-shaped manner, that is, a plurality of light receiving ports 31 are arranged concave toward the light return port 32. Preferably, the receiving optical guide 30 is formed with an inclined surface 36 or a reflective structure at the bottom of the claw root 35 that fully refracts the light transmitted by the plurality of claw rods 33. By utilizing the specific claw-shaped structure of the receiving optical guide 30, the light receiving port 31 with the claw tip 34 facing upward can be positioned at the first emission light hole 41 of the light receiving guide sleeve 40, and the common light return port 32 with the claw root 35 facing upward can be positioned at the first receiving light hole 42 of the light receiving guide sleeve 40, so that a plurality of emission lights are U-shapedly folded and collected into a code. By utilizing the specific structure of the electromechanical synchronous optical device of the meter, the information communication between the meter 100 and the wireless communication optoelectronic module 10 is realized by only optical message transmission, without destroying or changing the sealing of the original meter 100.

[0070] More preferably, see Figure 7 , the number of claw rods 33 may be less than the number of optical channels from the optical receiving port 31 to the optical return port 32. In the example, the number of optical channels is 5, and the number of claw rods 33 is 3, that is, the two optical channels located on both sides are merged into the same claw rod 33, so as to enhance the lateral anti-collision strength of the claw-shaped structure of the receiving optical guide 30. The claw root 35 forms an inclined surface 36 or a reflective structure on the opposite side where it is connected to the claw rod 33, which is used to internally refract the light in the optical channel. The angle of the inclined surface 36 relative to the horizontal plane of the claw rod 33 may be between 30 and 60 degrees, specifically 45 degrees. The claw tip 34 may also be formed with a similar inclined surface or reflective structure on the opposite side where it is connected to the claw rod 33. In the specific structure of this example, refer to Figure 7 (B) The bottom surface of the receiving light guide 30 is provided with a positioning point 37 for positioning the receiving light guide 30 in the meter 100. Figure 7(C) The inclined surface 36 formed on the reverse side of the claw root 35 where it is connected to the claw rod 33 is specifically a number of corrugated small planes corresponding to each optical channel. When there are five optical channels, there are five corrugated small planes, which accurately refract the light of each optical channel from the claw rod 33 to the light return port 32.

[0071] In a preferred example, the scanning order of the plurality of the emitting lamps 21 is along or against the rotation direction of the code disk 110 from the first light channel that can be blocked by the code disk 110 to the last light channel in the continuous sequence. Using a specific scanning order, the last emitting lamp 21 in the scanning order can just represent the last scale value of the code disk 110 at the moment when the scanning cycle ends. Taking the scale of ten and using 5 emitting lamps 21 as an example, when the code disk 110 is fully blocked, it can be set as scale 0 according to the rule, and the identification code number of the light message is

[00000] , 1 means light is transmitted, and 0 means no light is transmitted; when only the first emitting lamp 21 has a signal (the rotation speed of the code disk 110 cannot exceed one scale value of the scanning cycle), it can represent 1, and the identification code numbers are

[00001] respectively; the second to fifth emitting lamps 21 start to have signals one by one, representing 2, 3, 4, 5 respectively, and the identification codes are

[00011] , [001 ... ],

[01111] ,

[11111] ; when it reaches scale 5, the first to fifth emitting lights 21 are all through and not blocked by the code disk 110. The code disk 110 continues to rotate based on the flow rate, and the first emitting light 21 is blocked again and there is no signal to represent scale 6, and the identification code number is

[11110] ; the second to fifth emitting lights 21 are blocked one by one and there is no signal to represent 7, 8, 9, 0 respectively, and the identification codes are

[11100] ,

[11000] ,

[10000] ,

[00000] respectively. The above setting rules depend on a calculation rule of the wireless communication optoelectronic module 10. An example of scanning optical path change can be found in Figure 8 The time of a scanning light cycle can be controlled between 1 millisecond and 1,000 milliseconds, and can be specifically 5 milliseconds.

[0072] Alternatively, the code disk 110 can be set to scale 0 as a rule, and the identification code of the light message is

[11111] , 1 means light is transmitted, 0 means no light is transmitted, and the identification code from right to left represents the light signal of the first to fifth emitting lamps 21 respectively; when only the first emitting lamp 21 has no signal (the rotation speed of the code disk 110 cannot rotate half a circle in the scanning cycle), it can represent 1, and the identification code is

[11110] ; the second to fifth emitting lamps 21 have no signal one by one, representing 2, 3, 4, 5, and the identification code is

[1110] respectively. 0],

[11000] ,

[10000] ,

[00000] ; when it reaches scale 5, the first to fifth transmitting lights 21 are completely blocked by the code disk 110, and the code disk 110 continues to rotate based on the flow rate, and the first transmitting light 21 starts to have signals again to represent scale 6, and the identification code number is

[00001] ; the second to fifth transmitting lights 21 start to have signals to represent 7, 8, 9, 0 respectively, and the identification codes are

[00011] ,

[00111] ,

[01111] ,

[11111] . The above setting rules depend on another calculation rule of the wireless communication optoelectronic module 10, and can realize the calculation conversion of binary code to decimal scale outside the meter 100. If other non-specified identification code numbers (such as

[00100] ...etc.) appear, indicating that the value is abnormal, it is necessary to check whether there is a problem such as a failure of the transmitting light 21, an offset of the optical channel or an abnormal flow rate.

[0073] Alternatively, in a variation example, the number of transmitting lights 21 may be one, and the number of receiving lights 22 may be several, and the light path opening and closing conditions of several receiving lights 22 may be obtained by a one-time light emission and multi-path imaging method to determine the instantaneous position of the code disk 110.

[0074] More preferably, the transmitting light 21 has a light receiving function in addition to the light emitting function, and the receiving light 22 has a light emitting function in addition to the light receiving function. The identification code obtained by the transmitting light 21 can be used to detect the correctness of the identification code obtained by the receiving light 22, that is, to reversely detect the rationality of the identification code of the code disk position.

[0075] Fig. 9 The wireless communication optoelectronic module 10 is shown to be preassembled into an external accessory, which can be separated and reassembled from the meter 100 .

[0076] See also Fig.10 The present invention also proposes an assembly method of a smart meter head of any combination of the above technical solutions, characterized in that it comprises the following steps:

[0077] Step S1: Control Fig.11 , providing the meter 100;

[0078] Step S2: Control Fig.12, the receiving light guide member 30 and the light receiving guide sleeve 40 of the code disk instantaneous position acquisition mechanism 20 are installed in the meter 100 (located on the inner surface of the meter transparent sheet 121); specifically, the code disk 110 is installed in the accommodating groove 43 of the light receiving guide sleeve 40, and the light receiving guide sleeve 40 also limits the light receiving port 31 and the light return port 32 of the receiving light guide member 30; more specifically, the light receiving port 31 is limited to the first emitting light hole 41 of the light receiving guide sleeve 40, and the light return port 32 is limited to the first receiving light hole 42 of the light receiving guide sleeve 40;

[0079] Step S3: Control Fig.13 , the wireless communication optoelectronic module 10 is installed on one side of the meter 100 in a hanging manner (partially overlapped on the outside of the instrument transparent sheet 121), wherein the wireless communication optoelectronic module 10, the transmitting lamp 21 and the receiving lamp 22 are pre-assembled in a main body shell 13, and the light-emitting port of the transmitting lamp 21 and the light-receiving port of the receiving lamp 22 are located on the same side of the main body shell 13 that can be overlapped on the code disk 110; specifically, the light-emitting guide sleeve 50 is located between the overlapping protruding part of the circuit board 11 and the outside of the instrument transparent sheet 121; the non-transparent part of the wireless communication optoelectronic module 10 does not completely cover the instrument display area of ​​the meter 100, including the area of ​​the pointer or other numerical display devices, and the flow degree of the meter 100 can still be read and identified by visual means; without limitation, the flip cover 18 can be a transparent cover;

[0080] Therefore, the simple assembly of the smart meter head is completed by using the above specific assembly steps. When the smart meter head is used, when water or other fluid passes through the meter 100 such as a water meter, the designated pointer of the meter 100 on the dashboard 120 starts to rotate and measure, and the code disk 110 also rotates. The rotation of the code disk 110 will block the light receiving port 31 of the receiving light guide 30, and 10 states will be generated, and then transmitted back to the first receiving light hole 42 of the light receiving guide sleeve 40 to the receiving lamp 22. During the process, the wireless communication optoelectronic module 10 also starts to work. The main control chip 12 receives the command and transmits it to the transmitting lamp 21 to light up in turn. It passes through the second transmitting light hole of the light transmitting guide sleeve 50 and passes through the instrument transparent sheet 121 such as the wet water meter glass, and then identifies whether the code disk 110 is blocked and transmits the switch state through the first transmitting light hole 41 of the light receiving guide sleeve 40 to the light receiving port 31 of the receiving light guide member 30. After refraction by the receiving light guide member 30, it passes through the first receiving light hole 42 of the light receiving guide sleeve 40 from the light return port 32 and then through the instrument transparent sheet 121, and then through the second receiving light hole of the light transmitting guide sleeve 50 to the receiving lamp 22, and then returns to the main control chip 12 for decoding, thereby identifying the flow reading of the meter 100.

[0081] The embodiments of this specific implementation method are all preferred embodiments for facilitating the understanding or implementation of the technical solutions of the present invention, and are not intended to limit the protection scope of the present invention. All equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A electromechanical synchronous optical device for a meter, characterized in that: include: Wireless communication photoelectric module, used for wireless transmission of metering information of the meter; The code disk instantaneous position acquisition mechanism uses the code disk of the meter as the position reference, and includes: a transmitting lamp for being arranged above the code disk, a receiving light guide for being arranged at a U-shaped light turning point below the code disk, a receiving lamp for being arranged on one side above the code disk, and a light receiving guide sleeve for establishing a light path between the receiving light guide and the receiving lamp; The code disk instantaneous position acquisition mechanism is configured as follows: the light emitted by the transmitting lamp passes through the code disk to form an optical message capable of identifying the instantaneous rotation position of the code disk, and the optical message is reflected by the receiving optical guide and guided by the optical receiving guide sleeve to the receiving lamp, so that the wireless communication optoelectronic module calculates the optical messages of different time periods to obtain the metering message of the meter that can be wirelessly transmitted; The receiving optical guide is a claw-shaped structure having a plurality of light receiving ports located at the claw tip facing upward, a common light return port located at the claw root facing upward, and a plurality of claw rods connecting the individual light receiving ports to the light return ports, and the light receiving ports are arranged in a fan shape.

2. The electromechanical synchronous optical guide device for a meter according to claim 1, characterized in that: The transmitting light and the receiving light are integrated on the same side of the circuit board of the wireless communication optoelectronic module.

3. The electromechanical synchronous light guide device for a meter according to claim 2, characterized in that: The transmitting lamp and the receiving lamp are driven by the main control chip of the wireless communication optoelectronic module which is arranged on the circuit board; the wireless communication optoelectronic module is constructed as an external accessory of the meter.

4. The electromechanical synchronous optical guide device for a meter according to claim 1, characterized in that: There are several transmitting lamps and one receiving lamp. Lights from the several transmitting lamps are emitted in a scanning manner. The irradiation positions of the transmitting lamps are aligned with the radiation paths divided by angular scales equal to the rotation axis of the code disk.

5. The electromechanical synchronous optical guide device for a meter according to claim 4, characterized in that: The light receiving guide sleeve has a first light receiving hole aligned with the light receiving port of the receiving lamp and a receiving groove for accommodating the internal rotation of the code disk, and the receiving groove is also provided with a plurality of first emitting light holes arranged in a fan shape, aligned with the light emitting port of the emitting lamp; specifically, the light receiving guide sleeve has a water drop plate shape.

6. The electromechanical synchronous light guide device for a meter according to claim 5, characterized in that: The code disk instantaneous position acquisition mechanism includes: a light emitting guide sleeve arranged between the emitting lamp and the code disk, used to shield the light receiving guide sleeve; the light emitting guide sleeve is provided with a plurality of second emitting light holes arranged in a fan shape and aligned with the first emitting light hole and a second receiving light hole aligned with the first receiving light hole; as the code disk rotates, the code disk can block or not block the light channel between the first emitting light hole and the second emitting light hole one by one.

7. The electromechanical synchronous optical guide device for a meter according to claim 6, characterized in that: The scanning order of the plurality of emitting lamps is from the first light channel that can be blocked by the code disk to the last light channel in the continuous sequence along or against the rotation direction of the code disk.

8. The electromechanical synchronous optical guide device for a meter according to any one of claims 1 to 7, characterized in that: The receiving light guide is formed with an inclined surface or a reflecting structure at the bottom of the claw root, which fully refracts the light transmitted by the plurality of claw rods upward.

9. A smart meter head, characterized in that: It comprises a meter electromechanical synchronous optical guide device and a meter as claimed in any one of claims 1 to 8, wherein the meter is a mechanical meter, and the information transmission method from the meter to the wireless communication optoelectronic module is only a connection of optical message transmission.

10. An assembly method of a smart meter head as claimed in claim 9, characterized in that: The following steps are involved: providing said meter; Installing the receiving light guide and the light receiving guide sleeve of the code disk instantaneous position acquisition mechanism in the meter; The wireless communication optoelectronic module is installed on one side of the meter in a hanging manner, wherein the wireless communication optoelectronic module, the transmitting light and the receiving light are pre-assembled in a main shell, and the light-emitting port of the transmitting light and the light-receiving port of the receiving light are located on the same side of the main shell that can be stacked on the code disk.

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