CN213422286U

CN213422286U - Electromechanical synchronous light guide device of meter and intelligent meter head using same

Info

Publication number: CN213422286U
Application number: CN202022859870.8U
Authority: CN
Inventors: 胡子潜
Original assignee: Shenzhen Kilotone Science & Technology Co ltd
Current assignee: Shenzhen Kilotone Science & Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-06-11
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to a synchronous light guide device of strapping table electromechanical and intelligent measurement gauge outfit that uses device, the device includes communication module and code wheel instantaneous position acquisition mechanism, acquisition mechanism includes the launching lamp that is used for setting up in the code wheel top, be used for setting up in the receiving light guide piece of the U-shaped light turn of code wheel below and be used for setting up in the receiving lamp of code wheel top one side and be used for establishing the light receiving guide pin bushing that receives the light route between light guide piece and the receiving lamp, wherein, the light that the launching lamp sent forms the light message that can discern the instantaneous rotational position of code wheel through the code wheel, the light message passes through the reflection of receiving light guide piece and the guide directive receiving lamp of light receiving guide pin bushing. Because the optical information transmission is extremely small, the change to the gauge is extremely small compared with the electrical connection or the mechanical connection of the gauge to the external information transmission.

Description

Electromechanical synchronous light guide device of meter and intelligent meter head using same

Technical Field

The utility model belongs to the technical field of the external transmission of flow count value and specifically relates to a synchronous light guide device of strapping table electromechanical and intelligent measurement gauge outfit of using the device are related to.

Background

For example, in the case of a gas-liquid meter such as a water meter, conventionally, a mechanical component is used to calculate the flow rate and display the flow rate on a meter head display glass, and the meter is usually read visually to obtain the display count of the meter.

The applicant, as a pioneer in the field of intelligent meter reading subdivision and a research, development, production and sales entity, proposes a plurality of related patents, including related prior arts such as chinese patents CN105957318A, CN109738029A, CN209214700U, CN206461612U, CN209783674U, CN209264048U, CN209214701U, and the like, and reads the flow value of the meter in various ways. It is basically desirable not to excessively change the mechanical structure of existing meters and to maintain good tightness of the meters.

The conventional message communication method between the meter and the wireless communication module can distinguish mechanical message, electrical message, magnetic message, optical message or image identification, wherein the mechanical message communication can greatly change the mechanical structure of the existing meter, the electrical message communication needs to arrange a circuit board or other electrical elements in the meter, the environmental resistance is poor, the magnetic message communication is easily interfered by electromagnetic effect, the image picture transmission quantity required by the communication of the image identification is large, huge calculation is needed, the image picture can be possibly covered on the display surface of the meter, and the definition of the instrument panel picture can be easily influenced by the external light darkness and the environmental color. According to the current industrial level, the optical communication is more suitable for the requirements of not destroying or greatly changing the mechanical structure of the existing meter, but the shortcomings of how to avoid other communication modes are still continuously researched, including the problems that a circuit board or other electrical elements are arranged in the meter, the meter is easily interfered by electromagnetic effect, the internal information communication data amount to the wireless communication module is too large, and the like.

In the prior art, optical information transmission of a flow meter is performed in a light guide manner, which is disclosed in chinese patent application No. CN104428639A, and discloses a flow meter for measuring liquid volume of a faucet, which is used for measuring the amount of water discharged from the faucet. The device includes a marking scale with a predetermined flow rate. The diverter serves to divert a small portion of the water additionally into a separate measuring chamber. The liquid level is optically recorded and displayed to the user by means of a light guide. The measurement chamber is automatically drained by a pressure activated reset mechanism so that when the flow is off, the meter is empty. The flow diverter defines a flow diversion path for diverting a predetermined portion of the fluid from the faucet into the measurement chamber; wherein said measurement chamber includes a container having fluid disposed therein to display a total volume of fluid V flowing through the diverter over a predetermined time interval, said total volume of fluid V being represented by the relationship V ═ f(s) x s + b, where s represents liquid level, b is a bias constant, and f(s) includes one of a simple proportionality constant and an arbitrary weighting function derived from the geometry of said measurement chamber and said diverter; and a fluid outlet providing an outlet for fluid from the faucet; the volumetric flowmeter also defines a reset structure with a pressure chamber, and the reset structure can change the shape of the pressure chamber according to the flow pressure flowing through the pressure chamber, so that the reset structure can be directly or indirectly blocked or retracted in the opening of the measuring chamber, thereby storing fluid or discharging the fluid, and the flowmeter has automatic emptying capability after the fluid is closed. And a light guide member connected to the main body case and terminating in a line at the other end of the meter display end for visually communicating the liquid level of the measuring chamber, the light guide member being adapted to display the resulting liquid level in the display end by utilizing the characteristic that water has a refractive index greater than air. Therefore, the design that the light receiving end of the light guide part directly points to the liquid levels at different heights in the shell is adopted in the related prior art, and the design is completely different from the design of the mechanical water meter of the current commercial meter, so that large metering data cannot be acquired.

The inventor of the utility model provides a single-code disc type counting sensor in Chinese invention patent application number CN110426066A, which comprises a counting component, a counting module and a counting module, wherein the counting component is used for acquiring counting data; the data processing transmission assembly is used for receiving and processing the counting data and outputting the processed counting data; the energy supply assembly is used for supplying electric energy to the counting assembly and the data processing and transmitting assembly; the counting assembly comprises a protective shell, a single coded disc and a counting unit, wherein the single coded disc is rotatably connected in the protective shell through a rotating assembly, the counting unit is arranged in the protective shell, and the counting unit is electrically connected with the data processing and transmitting assembly and the energy supply assembly; the counting unit includes an optical output circuit outputting an optical signal; a light receiving circuit for receiving the light signal output by the light output circuit; the light output circuit and the light receiving circuit are positioned on two sides of the single code disc. In the related art, the code wheel rotates in the space between the light output circuit board and the light receiving circuit board of the counting unit, wherein the code wheel originally located in the instrument panel of the water meter is adjusted to the outside of the transparent glass above the instrument panel of the water meter in the spatial position configuration, besides changing the mechanical transmission relationship of the code wheel, the light output circuit boards and the light receiving circuit boards located above and below the code wheel also need to be accurately aligned, and the receiving lamps located at different circuit board heights cannot receive the light signals sent by the sending lamps due to slight displacement errors or horizontal errors.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a synchronous light guide device of strapping table electromechanical, main progress lies in need not changing the relative position of code wheel in the strapping table to the outside of strapping table to can solve the problem that light message can not accurate transmission and be difficult to the outside wireless communication structure of little data flash transfer to the strapping table.

The utility model discloses a main objective two, three are providing an intelligent measurement gauge outfit and assembly method thereof for the information communication mode that realizes between communication module and the strapping table only has the connection of light message transmission, and the equipment is convenient and do not have the counterpoint deviation problem of transmitting lamp and receiving lamp separation equipment.

The utility model discloses a main objective can be realized through following technical scheme:

it is proposed a meter electromechanical synchronization light guide comprising: communication module and code wheel instantaneous position acquisition mechanism. The communication module is used for wirelessly transmitting the metering information of the meter to the outside, the coded disc instantaneous position acquisition mechanism takes a coded disc of the meter as a position reference and comprises a transmitting lamp arranged above the coded disc, a receiving light guide piece used for a U-shaped light turn arranged below the coded disc, a receiving lamp arranged on one side above the coded disc and a light receiving guide sleeve used for establishing a light path between the receiving light guide piece and the receiving lamp, wherein the light receiving guide sleeve is provided with a first receiving light hole aligned with a light receiving port of the receiving lamp and a containing groove used for containing the coded disc to rotate inside, the light receiving guide sleeve is also provided with a first transmitting light hole aligned with a light emitting port of the transmitting lamp, so that the light emitted by the transmitting lamp forms light information capable of identifying the instantaneous rotating position of the coded disc after passing through the coded disc, the communication module calculates the optical information of different time periods to obtain the metering information of the meter capable of wireless transmission.

By adopting the technical scheme, the receiving light guide part used for the U-shaped light turn arranged below the coded disc and the light receiving guide sleeve used for establishing a light path between the receiving light guide part and the receiving lamp are utilized, like the transmitting lamp arranged above the coded disc, the receiving lamp can be arranged on one side above the coded disc, so that the transmitting lamp and the receiving lamp are both positioned outside the meter, the optical information of small data optical transmission is read out from the instantaneous positions of the coded disc in different time periods by the communication module, namely, the optical information can correspond to the flow scale of the meter, and further the metering information of the meter is calculated. Therefore, the coded disc can be used without being refitted to the outside of the meter, the inside of the meter does not need to be additionally provided with a circuit board or other electrical elements with metering functions, the transmitting lamp and the receiving lamp for reading the code are positioned in advance, and the displacement deviation of assembly is avoided. Specifically, the optical information transmitted to the communication module by the meter is a group of position codes formed by binary bright and dark signals, which represent corresponding scales of a code disc in an instantaneous time, and the optical transmission data volume is extremely small.

The present invention may be further configured in a preferred example to: the transmitting lamp and the receiving lamp are integrated on the same side of the circuit board of the communication module, the light receiving port of the U-shaped light turn of the receiving light guide piece is limited in the first transmitting light hole, and the light returning port of the U-shaped light turn of the receiving light guide piece is limited in the first receiving light hole.

By adopting the preferable technical characteristics, the circuit board of the communication module is used for pre-integrating the arrangement positions of the transmitting lamp and the receiving lamp on the same board side, the relative positions of the transmitting lamp and the receiving lamp are pre-determined, and the combination of the pre-molded light receiving guide sleeve is matched, so that the light receiving port and the light returning port of the receiving light guide piece of the U-shaped light turning part can be respectively aligned to the light emitting port of the transmitting lamp and the light receiving port of the receiving lamp, the communication module is arranged outside the meter in a pendant mode, and metering transmission without electric interconnection and mechanical linkage can be realized between the light receiving port and the light returning port. The light receiving guide sleeve is used for limiting the light receiving port and the light returning port of the U-shaped light turn of the receiving light guide member in a sleeving manner, so that the light loss of the U-shaped light turn in the meter is prevented.

The present invention may be further configured in a preferred example to: the transmitting lamp and the receiving lamp are driven by a main control chip of the circuit board through the communication module, and the communication module is formed as an external hanging piece of the meter.

Through adopting above-mentioned preferred technical characterstic, utilize to set up in the main control chip drive of this circuit board the transmitting lamp with the receiving lamp to be located the outside communication module of strapping table and be the initiative piece, formulate the adjustable flow calculation rule of strapping table and external wireless transmission correctable or reset and corresponding the measurement message of strapping table, correct the flow error that the inside machinery of strapping table was passed and is surveyed.

The present invention may be further configured in a preferred example to: the number of the transmitting lamps is a plurality, the number of the receiving lamps is one, light rays of the transmitting lamps are emitted in a scanning mode, and the irradiation positions of the transmitting lamps are aligned to the radiation path of the coded disc divided by the rotation axis equiangular scales.

By adopting the preferable technical characteristics, the light rays of the transmitting lamps are emitted in a scanning mode by utilizing the number of the transmitting lamps and the number of the receiving lamps as one, and a group of binary scale codes corresponding to the instantaneous positions of the code wheel are formed after the light rays pass through the code wheel and are recovered by a common return port, so that the problem of code falling or error codes caused by assembly alignment errors does not exist.

The present invention may be further configured in a preferred example to: the first light emitting holes are in sector configuration and arranged in the accommodating groove, and particularly, the light receiving guide sleeve is in a water droplet plate shape.

By adopting the preferable technical characteristics, the specific structure of the light receiving guide sleeve is provided with the containing groove and the first light receiving hole, so that the relative position of the code wheel and the return light channel is determined, and light can be converted into light information accurately corresponding to the instantaneous position of the code wheel after passing through the light emitting channel. Specifically, by using the water droplet plate-shaped light receiving guide sleeve, the accommodating groove can be formed in the large circle part of the water droplet plate shape, the first light receiving hole can be formed in the small circle part of the water droplet plate shape, the light receiving guide sleeve occupies a small space on the instrument panel of the meter, and the positioning of the light receiving guide sleeve in the instrument panel can be achieved.

The present invention may be further configured in a preferred example to: the coded disc instantaneous position acquisition mechanism comprises a light emitting guide sleeve and a second light receiving guide sleeve, wherein the light emitting guide sleeve is arranged between a light emitting lamp and a coded disc and used for shielding a light receiving guide sleeve, specifically, the light emitting guide sleeve is provided with a plurality of second light emitting holes which are arranged in a fan shape and aligned with a first light emitting hole and a second light receiving hole aligned with a first light receiving hole, and the coded disc can shield one by one and also can not shield a light channel between the first light emitting hole and the second light emitting hole one by one along with the rotation of the coded disc.

Through adopting above-mentioned preferred technical characteristics, utilize the specific structure of light emission guide pin bushing, provide emission light channel and recovery light channel between emission lamp and the code wheel, extended outside the strapping table and connected the light channel of light receiving guide pin bushing reduces the outside light leak with communication module of strapping table.

The present invention may be further configured in a preferred example to: the scanning sequence of a plurality of the emission lamps is from a first light channel which can be blocked by the code disc to a continuously sequenced last light channel along or against the rotation direction of the code disc.

By adopting the preferred technical features described above, with a particular scanning sequence, the emission lamp at the last of the scanning sequence can just represent the last scale value of the code wheel at the moment the scanning cycle ends. Taking the scale as ten for example using 5 emission lamps, when the code wheel is totally shielded can be regularly set to scale 0, the identification code number of the light message is [00000],1 has light transmission and 0 has no light transmission, when only the first emission lamp has signal (the rotation speed of the code wheel can not exceed a scale value of the scanning period) and can represent 1, the identification code number is [00001], the second to fifth emission lamps start to have signal respectively represent 2,3,4 and 5, the identification code numbers are [00011], [00111], [01111] and [11111], when the scale 5 is reached, the first to fifth emission lamps are totally not shielded by the code wheel, the code wheel has the first emission lamp to be shielded again and no signal can represent scale 6, the identification code number is [11110], the second to fifth emission lamps are sequentially shielded and have no signal respectively represent 7,8,9 and 0, the identification code numbers are [11100], [11000], [10000], [00000] respectively. The above setting rule depends on a calculation rule of the communication module.

Or, the code wheel is set to be a scale 0, the identification code number of the optical information is [11111],1 has light transmission, 0 has no light transmission, the identification code number represents the optical signals of the first to fifth emission lamps from right to left, when only the first emission lamp has no signal (the rotation speed of the code wheel cannot rotate for a half circle in the scanning period) to represent 1, the identification code numbers are [11110], the second to fifth emission lamps have no signal to represent 2,3,4,5, respectively, the identification code numbers are [11100], [11000], [10000], [00000], when the scale 5 is reached, the first to fifth emission lamps are completely shielded by the code wheel, the code wheel rotates continuously based on the passing flow, the first emission lamp has a signal to represent the scale 6 again, the identification code number is [00001], the second to fifth emission lamps have signals to represent 7,8,9,0, the identification code numbers are [00011], [00111], [01111] and [11111], respectively. The above setting rules depend on another calculation rule of the communication module, and can realize the calculation conversion from the binary code to the decimal scale outside the meter. If the identification code number (e.g., [00100]. or the like) in other non-specifications indicates a numerical value abnormality, it is necessary to check whether there is a problem such as a failure of the emission lamp, a deviation of the optical channel, or an abnormal flow rate.

The present invention may be further configured in a preferred example to: the receiving light guide part is of a claw-shaped structure and is provided with a plurality of light receiving ports which are positioned on the claw tips and face upwards, a common light returning port which is positioned on the claw roots and faces upwards, and a plurality of claw rods which connect the respective light receiving ports to the light returning port, wherein the light receiving ports are arranged in a fan shape, and preferably, the bottom of the claw roots of the receiving light guide part is provided with inclined planes or reflecting structures which are used for totally refracting upwards the light transmitted by the claw rods.

By adopting the preferable technical characteristics, by utilizing the specific claw-shaped structure of the receiving light guide piece, the light receiving port with the upward claw tip can be positioned in the first emitting light hole of the light receiving guide sleeve, and the common light returning port with the upward claw root can be positioned in the first receiving light hole of the light receiving guide sleeve, so that a plurality of emitted lights are U-shaped reversely folded and combined into codes.

The utility model discloses a main objective can realize through following technical scheme secondly:

the utility model provides an intelligent metering gauge outfit, includes a strapping table electromechanical synchronization light guide and strapping table of above arbitrary technical scheme, the strapping table is mechanical type measurement, the strapping table extremely communication module's information transmission mode only has the connection of light message transmission.

Through adopting above-mentioned technical scheme, utilize strapping table electromechanical synchronization light guide's particular structure, realize the strapping table with information communication mode between the communication module only has the connection of light message transmission, does not destroy the leakproofness that does not change original strapping table.

The utility model discloses a main objective third can be realized through following technical scheme:

the method for assembling the intelligent metering gauge head is characterized by comprising the following steps of:

providing the meter;

installing the receiving light guide and the light receiving guide sleeve of the code wheel instantaneous position acquisition mechanism in the meter;

the communication module is arranged on one side of the meter in a hanging piece mode, wherein the communication module, the transmitting lamp and the receiving lamp are assembled in a main body shell in advance, and a light emitting port of the transmitting lamp and a light receiving port of the receiving lamp are positioned on the same side of the main body shell, wherein the light emitting port and the light receiving port can be overlapped on the code disc.

By adopting the technical scheme, the simple assembly of the intelligent metering gauge head is completed by utilizing specific assembly steps.

To sum up, the utility model discloses a following at least one kind makes the technological effect of contribution to prior art:

1. the synchronous code reading of digital optical information of the meter is realized;

2. the meter is modified to have the function of transmitting the metering information of the meter to the outside in a wireless way, but the coded disc is not modified to the outside of the meter, and the circuit board is not modified to the inside of the meter;

3. the meter is applied to the mechanical water meter, the power supply to the inside of the meter is not needed, and any mechanical linkage device is not needed to be additionally arranged outside the meter;

4. the data quantity of the identification code of the optical information transmitted to the communication module by the meter corresponding to the instantaneous position of each code wheel is extremely small, and is compared with the data quantity of the transmitted image photo.

Drawings

Fig. 1 is a schematic perspective view of an intelligent meter head including an electro-mechanical synchronization light guide of a meter according to some preferred embodiments of the present invention;

fig. 2 is an exploded view of a smart meter head including an electro-mechanical synchronization light guide of the meter according to some preferred embodiments of the present invention;

fig. 3 is an exploded view of an electromechanical synchronization light guide of a meter according to some preferred embodiments of the present invention;

fig. 4 is a schematic perspective exploded view of an electromechanical synchronization light guide device of a meter in some preferred embodiments of the present invention;

FIG. 5 is a perspective view (A) and a rotation plane view (B) of a code wheel used in an electromechanical synchronization light guide device of a meter according to some preferred embodiments of the present invention;

FIG. 6 is a schematic diagram showing a position mapping of an electromechanical synchronization light guide device of a meter to encode instantaneous code wheel position in some preferred embodiments of the present invention;

fig. 7 shows a schematic plan view (a), a schematic longitudinal cut (B) and a plan view (C) of a light receiving guide of an electromechanical synchronization light guide of a meter according to some preferred embodiments of the present invention;

fig. 8 shows schematic views (a) - (E) of a receiving light guide of an electromechanical synchronization light guide of a meter in scanning operation according to some preferred embodiments of the present invention;

fig. 9 is a perspective view of a mounting hanger pre-assembled with communication modules of an electromechanical synchronization light guide device of a meter according to some preferred embodiments of the present invention;

fig. 10 is a block diagram illustrating a method of assembling a smart meter head according to some preferred embodiments of the present invention;

fig. 11 is a schematic perspective view of the meter provided in step S1 of fig. 10 according to some preferred embodiments of the present invention, wherein the method for assembling the smart meter head corresponds to the method for assembling the smart meter head;

fig. 12 is a schematic perspective view of an assembly method of a smart meter head according to some preferred embodiments of the present invention, corresponding to step S2 in fig. 10, for mounting a light receiving guide and a light receiving guide sleeve in a meter;

fig. 13 is a perspective view illustrating an assembly method of a smart meter according to some preferred embodiments of the present invention, corresponding to step S3 of fig. 10, in which a communication module is mounted on one side of an exterior of a meter in a hanging manner.

Reference numeral 10, a communication module, 11, a circuit board, 12, a main control chip, 13, a main body shell, 14, a sealing ring, 15, an elastic limiting piece, 16, a battery, 17, a waterproof end cover, 18, a flip cover, 19, a snap ring pin, 20, a code disc instantaneous position acquisition mechanism, 21, a transmitting lamp, 22, a receiving lamp, 30, a receiving light guide, 31, a light receiving opening, 32, a light returning opening, 33, a claw rod, 34, a claw tip, 35, a claw root, 36, a bevel, 37, a positioning point, 40, a light receiving guide sleeve, 41, a first transmitting light hole, 42, a first receiving light hole, 43, a containing groove, 50, a light transmitting guide sleeve, 51, a second transmitting light hole, 52, a second receiving light hole, 100, a meter, 110, a code disc, 111, a position coding notch, 112, an opening side, 113, a closing side, 120, an instrument panel, 121, a transparent instrument sheet, 122, a sealing, A snap ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments for understanding the inventive concept of the present invention, and do not represent all the embodiments, nor do they explain the only embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art on the premise of understanding the inventive concept of the present invention belong to the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly. In order to understand the technical scheme of the utility model more conveniently, will the following the utility model discloses a further detailed description is done with the intelligent measurement gauge outfit that uses the device to the synchronous light guide device of strapping table electromechanics and explanation, nevertheless does not regard as the utility model discloses the scope of protection of injecing.

The drawings illustrate only those portions of the embodiments that are common to the various embodiments, and the portions that differ or are distinct are described in text or presented in comparison to the drawings. Therefore, based on the industrial characteristics and technical essence, those skilled in the art should correctly and reasonably understand and judge whether the individual technical features or any combination of a plurality of the technical features described below can be characterized in the same embodiment or whether a plurality of technical features mutually exclusive can be respectively characterized in different variant embodiments.

Fig. 1 and 2 depict perspective and exploded views of a meter electromechanical synchronization light guide mounted to a meter, and fig. 3 depicts an exploded perspective view of the meter electromechanical synchronization light guide. The meter electromechanical synchronization light guide device comprises a communication module 10 and a code wheel instantaneous position acquisition mechanism 20. The communication module 10 is used for transmitting the metering information of the meter 100 to the outside. The wireless communication module 10 may be a wireless communication optoelectronic module, and sends out a message in a wireless transmission manner. The communication module 10 basically includes a circuit board 11 and a main control chip 12 installed on the circuit board 11, and the specific structure and operation mode for achieving wireless signal transmission may use Wi-fi or bluetooth technology, which is preferred to the prior art, and is not described in detail, nor limited to a wireless transmission mode, but may be wired transmission in different examples. Referring to fig. 1, the electromechanical synchronous optical waveguide device of the meter including the communication module 10 can be combined with one side of the meter 100 in an external hanging manner to assemble an intelligent meter head, the meter 100 can be specifically used for mechanical metering, and the information transmission manner from the meter 100 to the communication module 10 is only the connection of optical information transmission. The meter is a meter with meter-shaped structure for displaying flow degree. In this example, referring to fig. 2, the meter 100 includes a code wheel 110 installed in the meter, a dashboard 120 having a plurality of hands capable of displaying a flow rate, a meter transparent sheet 121 sealing an inner space of the meter above the dashboard 120 through coupling of a snap ring 122, wherein rotation of the code wheel 110 is synchronized with one of the hands. Usually, the meter 100 has a gas-liquid flow inlet end and a gas-liquid flow outlet end, the meter 100 shown in the figure is a mechanical water meter, but in different examples the utility model discloses an application is not limited to water measurement only, also can regard as the measurement of fuel, natural gas, the round rotation unit of code wheel 110 only can correspond to the flow value that predetermined detection confirmed.

Referring to fig. 2 and 3, the code wheel instantaneous position acquiring mechanism 20 is used for acquiring the instantaneous position of the code wheel 110, and based on the code wheel 110 of the meter 100, the mechanism includes an emitting lamp 21 disposed above the code wheel 110, a receiving light guide 30 disposed below the code wheel 110 and having a U-shaped light turn, a receiving lamp 22 disposed on one side above the code wheel 110, and a light receiving guide sleeve 40 for establishing a light path between the receiving light guide 30 and the receiving lamp 22. Without limitation, the number of the emission lamps 21 may be one or more, and the number of the reception lamps 22 may be one or more. In the present example, the number of the emission lamps 21 is several, and the number of the emission lamps 21 is one.

Wherein, fig. 4 shows that the parts of the code wheel instantaneous position acquisition mechanism 20 installed in the meter 100 can include the light receiving guide 30 and the light receiving guide sleeve 40. Referring to fig. 3 and 4, the code wheel instantaneous position collecting mechanism 20 is configured such that light emitted from the emitting lamp 21 passes through the code wheel 110 to form an optical message capable of identifying the instantaneous rotation position of the code wheel 110, and the optical message is directed to the receiving lamp 22 through the reflection of the receiving optical guide 30 and the guidance of the receiving optical guide 40, so that the communication module 10 can calculate the optical message of different time periods to obtain the metering message of the meter 100 capable of wireless transmission.

The implementation principle of the embodiment is as follows: by using the receiving light guide member 30 for the U-shaped light turn disposed below the code wheel 110 and the light receiving guide sleeve 40 for establishing the light path between the receiving light guide member 30 and the receiving lamp 22, like the emitting lamp 21 disposed above the code wheel 110, the receiving lamp 22 can be disposed at one side above the code wheel 110, so that the emitting lamp 21 and the receiving lamp 22 are both located outside the meter 100, and the communication module 10 reads out the instantaneous position of the code wheel in different time periods for the light messages of small data light transmission, that is, the light messages can correspond to the flow scale of the meter 100, thereby calculating the metering message of the meter 100. Therefore, the code disc 110 does not need to be modified to the outside of the meter 100, the circuit board 11 or other electrical elements with metering functions do not need to be added to the inside of the meter 100, and the transmitting lamp 21 and the receiving lamp 22 for reading the code are positioned in advance without assembled displacement deviation. Specifically, the optical information transmitted from the meter 100 to the communication module 10 is a set of position codes composed of binary bright and dark signals, which represent the corresponding scales of the code wheel 110 in the instantaneous time, and the amount of optical transmission data is very small.

In one particular configuration of the communication module 10 adapted for use with a meter 100, such as a mechanical water meter, the communication module 10 includes a main housing 13 for receiving a circuit board 11. The main control chip 12 and other communication components are mounted on the circuit board 11. The main body case 13 forms a loop in addition to the space for accommodating the circuit board 11, and is adapted to be coupled to the meter 100. The clasp has an opening to expose the dashboard 120 of the meter 100. The main body housing 13 is provided with a sealing ring 14 at the periphery of the space for accommodating the circuit board 11 to increase the waterproof property of the waterproof end cap 17 combined with the main body housing 13, or/and to increase the crashworthiness of the circuit board 11 in the main body housing 13. An elastic limiting member 15 may be disposed above the circuit board 11 for elastically forcing the circuit board 11 to press downward. The main body 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 may provide power required by the communication module, or may use other common power sources. When the waterproof end cap 17 is combined with the main body housing 13 during assembly, the waterproof end cap 17 may have a chamber corresponding to the elastic limiting member 15, and the elastic limiting member 15 presses one side of the circuit board 11. The waterproof end cover 17 has a flange facing the opening of the ring buckle, the ring buckle of the main body shell 13 is provided with a flip cover 18, the flip cover 18 can cover the opening of the ring buckle and can press the flange of the waterproof end cover 17 (as shown in fig. 2), and the flip cover 18 which is covered is fixed by a plurality of snap ring pins 19, so that the pressing on the other side of the circuit board 11 is completed. The projecting plate portion of the circuit board 11 for engaging with part of the code wheel instantaneous position pickup mechanism 20 can be extended to the instrument panel 120 with uniform pressing by holding the flat pressing of the circuit board 11 with both side pressing. The above description of the embodiment of the communication module 10 is an illustration and is not intended to limit the invention, and the communication module 10 may be varied in many ways according to different structures of the meter 100.

In a preferred example, referring to fig. 2 and 3, the transmitting lamp 21 and the receiving lamp 22 are integrated on the same side of the circuit board 11 of the communication module 10, and the specific position in this example is a protruding plate portion of the circuit board 11. The circuit board 11 of the communication module 10 is used to integrate the installation positions of the emitting lamp 21 and the receiving lamp 22 on the same board side in advance, the relative positions of the emitting lamp 21 and the receiving lamp 22 are predetermined, and the combination of the light receiving guide sleeve 40 which is molded in advance is matched, so that the light receiving port 31 and the light returning port of the receiving light guide member 30 of the U-shaped light turning can be aligned to the light emitting port of the emitting lamp 21 and the light receiving port of the receiving lamp 22 respectively, and the communication module 10 is arranged outside the meter 100 in a hanging manner, and metering transmission without electrical interconnection and mechanical linkage can be realized between the two.

In a preferred example, the transmitting lamp 21 and the receiving lamp 22 are driven by a main control chip 12 of the communication module 10 disposed on the circuit board 11, and the communication module 10 is configured as an external hanger of the meter 100. The transmitting lamp 21 and the receiving lamp 22 are driven by the main control chip 12 arranged on the circuit board 11, the communication module 10 positioned outside the meter 100 is used as an active part, an adjustable flow calculation rule of the meter 100 is formulated, external wireless transmission can correct or reset metering information corresponding to the meter 100, and the adjustable flow calculation rule can be used for correcting mechanical transmission measurement flow errors inside the meter 100 in an unlimited way.

In a preferred example, the number of the emission lamps 21 is several, the number of the receiving lamps 22 is one, light rays of several emission lamps 21 are emitted in a scanning manner, and the irradiation positions of the emission lamps 21 are aligned on a radiation path of the code wheel 110 divided by the rotation axis equiangular scale (see fig. 6). The light rays of the emitting lamps 21 are emitted in a scanning mode by using the number of the emitting lamps 21 as a plurality and the number of the receiving lamps 22 as one, and a group of binary scale codes corresponding to the instantaneous positions of the code wheel are formed after the light rays pass through the code wheel 110 and are recovered by a common return port, so that the problem of code falling or error codes caused by assembly alignment errors does not exist. In the variation of the present example, the light receiving surface (corresponding to the light receiving opening 31 of the receiving light guide 30) may be changed by 5 to 1, and the light reflecting surface (corresponding to the return opening 32 of the receiving light guide 30) may be changed by 1 to 5, for adjustment of different carry scales. In different application occasions, the number of the light receiving surfaces can be changed from N to 1, the number of the light reflecting surfaces can be changed from 1 to N, and N is a positive integer greater than or equal to 2. The number of the transmitting lamps 21 and the receiving lamps 22 may be arbitrarily changed as long as the instantaneous position of the code wheel 110 can be determined.

In a preferred example, referring to fig. 3 and 4, the light receiving guide sleeve 40 has a first light receiving hole 42 aligned with the light receiving opening of the light receiving lamp 22 and a receiving groove 43 for receiving the code wheel 110 to rotate therein, the receiving groove 43 further has a plurality of first light emitting holes 41 arranged in a fan shape and aligned with the light emitting opening of the light emitting lamp 21, and specifically, the light receiving guide sleeve 40 has a water-drop shape. The specific structure of the light receiving guide sleeve 40 is provided with the receiving groove 43 and the first light receiving hole 42, so that the relative position of the code wheel 110 and the return light channel is determined, and light can be converted into light information accurately corresponding to the instantaneous position of the code wheel after passing through the light emitting channel. Specifically, with the drop plate-shaped light receiving guide sleeve 40, the accommodating groove 43 may be formed in a large circular portion of the drop plate shape, the first light receiving hole 42 may be formed in a small circular portion of the drop plate shape, the light receiving guide sleeve 40 occupies a small space on the instrument panel of the meter 100, and the positioning of the light receiving guide sleeve 40 in the instrument panel can be achieved.

In a preferred example, the code wheel instantaneous position acquisition mechanism 20 comprises a light emitting guide sleeve 50 arranged between the emitting lamp 21 and the code wheel 110 and used 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 51 which are arranged in a fan shape and aligned with the first emitting light holes 41 and a second receiving light hole 52 which is aligned with the first receiving light hole 42, and the code wheel 110 can shield one by one or can not shield the light passage between the first emitting light holes 41 and the second emitting light holes 51 along with the rotation of the code wheel 110. By using the specific structure of the light emitting guide sleeve 50, a light emitting channel and a light recycling channel between the emitting lamp 21 and the code wheel 110 are provided, and the light channel connected with the light receiving guide sleeve 40 extends outside the meter 100, so that light leakage between the outside of the meter 100 and the communication module 10 is reduced.

Referring to fig. 5, the code wheel 110 specifically has an axial rod and an axial disc connected to the axial rod, the axial disc is formed with a position coding notch 111 for opening the optical channel, and two sides of the position coding notch 111 are an opening side 112 for opening the optical channel during rotation and a closing side 113 for closing the optical channel during rotation, respectively. In this example, the notch amplitude of the position-coding notch 111 is close to or equal to 180 degrees. Taking decimal place as an example, referring to fig. 6, the circle center of fig. 6 is exactly aligned with the rotation axis of the code disc, ten scales from 0 to 9 are divided by the circumference of the code disc, the opening of the optical channel is located on the path of the scale radial line, for example, scales 1 to 5, in a standing state, the position coding gap 111 of the code disc 110 can just expose the optical channel from scale 1 to scale 5, and with the rotation of the code disc 110, the optical channels from scale 1 to scale 5 are sequentially opened to full pass and then closed to full pass one by one to form an ordered change corresponding to the flow change, so as to form an identification code corresponding to the flow change.

In a preferred example, referring to fig. 7 in combination with fig. 3 and 4, the light guide 30 is a claw-shaped structure having a plurality of light receiving ports 31 with claw tips 34 facing upward, a common light returning port 32 with claw roots 35 facing upward, and a plurality of claw bars 33 connecting the respective light receiving ports 31 to the light returning port 32, wherein the light receiving ports 31 are arranged in a fan shape, that is, a plurality of the light receiving ports 31 are arranged in a concave shape facing the light returning port 32, and preferably, the light guide 30 is formed with a slope 36 or a reflection structure at the bottom of the claw roots 35 for totally refracting and upwardly transmitting light to the plurality of the claw bars 33. By using the special claw-shaped structure of the receiving light guide 30, the light receiving opening 31 with the claw tip 34 facing upwards can be positioned at the first light emitting hole 41 of the light receiving guide sleeve 40, and the common light returning opening 32 with the claw root 35 facing upwards can be positioned at the first light receiving hole 42 of the light receiving guide sleeve 40, so that a plurality of emitted lights can be bent backwards in a U shape and combined into a code. The specific structure of the electromechanical synchronous light guide device of the meter is utilized to realize that the information communication mode between the meter 100 and the communication module 10 is only the connection of optical information transmission, and the sealing performance of the original meter 100 is not damaged and not changed.

More preferably, referring to fig. 7, the number of claw bars 33 may be less than the number of light passages from the light receiving port 31 to the light returning port 32. In the example, the number of light channels is 5 and the number of claw bars 33 is 3, i.e. two light channels on both sides are combined in the same claw bar 33 to enhance the lateral collision resistance of the claw structure of the receiving light guide 30. The claw 35 is formed with a slope 36 or a reflection structure at the opposite side to the claw bar 33 for internally refracting the light in the light path, and the angle of the slope 36 with respect to the horizontal plane of the claw bar 33 may be 30 to 60 degrees, specifically 45 degrees. The claw tips 34 may also be formed with similar bevels or reflective structures on the opposite side to where the claw bars 33 meet. In the particular structure of the present example, referring to fig. 7(B), the bottom surface of the receiving light guide 30 is provided with an anchoring point 37 for anchoring said receiving light guide 30 within the meter 100. Referring to fig. 7(C), the inclined planes 36 formed on the opposite sides of the claw roots 35, which are connected to the claw rods 33, are specifically the number of the prismatic facets corresponding to each optical channel, and when the optical channels are five, the number of the prismatic facets is five, so that the light of each optical channel is accurately refracted to the light returning port 32 by the claw rods 33.

In a preferred example, the scanning order of several of the emission lamps 21 is from a first light channel, which can be blocked by the code wheel 110, to a successively ordered last light channel in or against the direction of rotation of the code wheel 110. With a particular scanning sequence, the emission lamp 21 at the end of the scanning sequence may just represent the last scale value of the code wheel 110 at the end of the scanning cycle. Taking the scale as ten for example using 5 emission lamps 21, when the code wheel 110 is totally shielded and can be regularly set to scale 0, the identification code number of the optical message is [00000],1 has light transmission and 0 has no light transmission, when only the first emission lamp 21 has a signal (the rotation speed of the code wheel 110 cannot exceed a scale value of the scanning period) to represent 1, the identification code numbers are [00001], the second to fifth emission lamps 21 start to have signals respectively representing 2,3,4,5 one by one, the identification code numbers are [00011], [00111], [01111], [11111], when the scale 5 is reached, the first to fifth emission lamps 21 are totally not shielded by the code wheel 110, the first emission lamp 21 starts to be shielded again based on the continuous rotation of the passing flow rate, no signal can represent scale 6, the identification code number is [11110], the second to fifth emission lamps 21 are shielded and have no signal to represent 7 one by one, 8,9 and 0, wherein the identification code numbers are [11100], [11000], [10000] and [00000] respectively. The above setting rules depend on a calculation rule of the communication module 10. An exemplary variation of the scanning optical path can be seen in the variation of (a) to (E) in fig. 8. The time of one scanning light period may be controlled between one millisecond and one thousand milliseconds, and may be 5 milliseconds.

Or, the code wheel 110 is set to be a scale 0, the identification code number of the light message is [11111],1 is light-passing, 0 is no light-passing, the identification code number represents the light signal of the first to fifth emitting lamps 21 from right to left, when only the first emitting lamp 21 has no signal (the rotation speed of the code wheel 110 cannot rotate for a half circle in the scanning period) to represent 1, the identification code number is [11110], the second to fifth emitting lamps 21 have no signal one by one to represent 2,3,4,5, the identification code number is [11100], [11000], [10000], [00000], when the scale 5 is reached, the first to fifth emitting lamps 21 are completely shielded by the code wheel 110, the first emitting lamp 21 starts to have a signal again to represent 6 based on the continuous rotation of the code wheel 110 through the flow, the identification code number is [00001], the second to fifth emitting lamps 21 start to have a signal to represent 7,8,9 and 0, and the identification code numbers are [00011], [00111], [01111] and [11111], respectively. The above rules are determined by another calculation rule of the communication module 10, and the calculation conversion from binary code to decimal scale outside the meter 100 can be realized. If the identification code number (e.g., [00100]. or the like) in other non-predetermined range indicates a numerical value abnormality, it is necessary to check whether there is a failure of the emission lamp 21, a shift of the optical channel, or a traffic abnormality.

Or, in a variation, the number of the emitting lamps 21 may be one, the number of the receiving lamps 22 may be several, and the condition of the light path opening switches of several receiving lamps 22 is obtained in a one-time light emitting multi-path image capturing manner to determine the instantaneous position of the code wheel 110.

More preferably, the emitting lamp 21 has a light receiving function in addition to the light emitting function, the receiving lamp 22 has a light emitting function in addition to the light receiving function, and the identification code obtained by the emitting lamp 21 can be used to detect the correctness of the identification code obtained by the receiving lamp 22, i.e. to reversely detect the rationality of the identification code of the verification code disc position.

Fig. 9 shows that the communication module 10 can be pre-assembled as an external hanger, separated and reassembled from the meter 100.

Referring to fig. 10, the present invention further provides an assembling method of the smart meter head according to the above-mentioned technical solution, which includes the following steps:

step S1, referring to FIG. 11, providing the meter 100;

step S2, referring to FIG. 12, installing the receiving light guide 30 and the receiving light guide sleeve 40 of the code wheel instantaneous position acquisition mechanism 20 in the meter 100 (located on the inner surface of the transparent sheet 121 of the meter), specifically, installing the code wheel 110 in the containing groove 43 of the receiving light guide sleeve 40, and the receiving light guide sleeve 40 further limits the receiving light opening 31 and the returning light opening 32 of the receiving light guide 30, more specifically, the receiving light opening 31 is limited by being sleeved in the first emitting light hole 41 of the receiving light guide sleeve 40, and the returning light opening 32 is limited by being sleeved in the first receiving light hole 42 of the receiving light guide sleeve 40;

step S3, referring to fig. 13, the communication module 10 is mounted on one side of the meter 100 (partially overlapping outside the transparent meter sheet 121) in a hanging manner, wherein the communication module 10, the transmitting lamp 21 and the receiving lamp 22 are pre-assembled in a main housing 13, 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 housing 13 that can overlap the code disc 110, specifically, the light emitting guide 50 is located between the overlapping protruding portion of the circuit board 11 and the outside of the transparent meter sheet 121, the non-transparent portion of the communication module 10 does not completely cover the meter display area of the meter 100, including the area of the pointer or other numerical display device, and the flow rate of the meter 100 can still be read and identified visually, and the flip 18 may be a transparent cover.

Therefore, the simple assembly of the intelligent metering gauge head is completed by the specific assembly steps. When the smart meter head is used, when water flow or other fluid starts to work through the meter 100 such as a water meter, the designated pointer of the meter 100 on the instrument panel 120 starts to rotate for metering, the code wheel 110 also rotates, the rotation of the code wheel 110 will block the light receiving opening 31 of the

light receiving guide

30, 10 states will be generated, and then the light is transmitted back to the first light receiving hole 42 of the light receiving guide sleeve 40 to the light receiving lamp 22. In the process, the communication module 10 also starts to operate, the main control chip 12 receives a command and transmits the command to the emission lamps 21 to be sequentially lighted, the command passes through the meter transparent sheet 121 such as wet water meter glass through the second emission light hole 51 of the emission guide sleeve 50, then identifies whether the code disc 110 is blocked and transmits the on-off state to the light receiving port 31 of the receiving light guide member 30 through the first emission light hole 41 of the light receiving guide sleeve 40, passes through the meter transparent sheet 121 from the light returning port 32 through the first receiving light hole 42 of the light receiving guide sleeve 40 after being refracted by the receiving light guide member 30, then passes through the second receiving light hole 52 of the emission guide sleeve 50 to the receiving lamp 22, and then returns the reflected light to the main control chip 12 to be decoded, thereby identifying the flow reading of the meter 100.

The embodiment of this detailed implementation mode is all regarded as convenient understanding or implementation the utility model discloses technical scheme's preferred embodiment, not restrict according to this the utility model discloses a protection scope, all according to the equivalent change that structure, shape, principle were done, all should be covered in the utility model discloses an ask the protection within range.

Claims

1. An electromechanical synchronization light guide for a meter, comprising:

the communication module is used for transmitting the metering information of the meter to the outside;

the coded disc instantaneous position acquisition mechanism takes a coded disc of a meter as a position reference and comprises a transmitting lamp, a receiving light guide piece, a receiving lamp and a light receiving guide sleeve, wherein the transmitting lamp is arranged above the coded disc, the receiving light guide piece is arranged below the coded disc and is used for a U-shaped light turn, the receiving lamp is arranged on one side above the coded disc, and the light receiving guide sleeve is used for establishing a light path between the receiving light guide piece and the receiving lamp;

the light receiving guide sleeve is provided with a first light receiving hole aligned to the light receiving opening of the receiving lamp and a containing groove used for containing the coded disc to rotate inside, and the light receiving guide sleeve is further provided with a first light emitting hole aligned to the light emitting opening of the light emitting lamp, so that light rays emitted by the light emitting lamp pass through the coded disc to form light information capable of identifying the instantaneous rotating position of the coded disc.

2. The electromechanical synchronous light guide device of the meter according to claim 1, wherein the emitting light and the receiving light are integrated on the same side of the circuit board of the communication module, the light receiving port of the U-shaped light turn of the receiving light guide is limited to the first emitting light hole, and the light returning port of the U-shaped light turn of the receiving light guide is limited to the first receiving light hole.

3. The electromechanical synchronous light guide device of the meter according to claim 2, wherein the transmitting lamp and the receiving lamp are driven by a main control chip of the circuit board on which the communication module is arranged, and the communication module is configured as an external hanger of the meter.

4. The electromechanical synchronization light guide device of the meter according to claim 1, characterized in that the number of the emitting lamps is several, the number of the receiving lamps is one, the light rays of several of the emitting lamps are emitted in a scanning manner, and the irradiation positions of the emitting lamps are aligned on the radiation path of the code disc divided by the rotation axis equiangular scale.

5. The electromechanical synchronization light guide device of the meter according to claim 4, wherein the first light emitting hole is a plurality of fan-shaped holes and is disposed in the receiving groove, and in particular, the light receiving guide sleeve has a shape of a water droplet.

6. The electromechanical synchronization light guide device of the meter as claimed in claim 5, wherein the code wheel instantaneous position collecting mechanism comprises a light emitting guide sleeve for shielding the light receiving guide sleeve and arranged between the emitting lamp and the code wheel, specifically, the light emitting guide sleeve is provided with a plurality of second emitting light holes which are arranged in a fan shape and aligned with the first emitting light holes and a second receiving light hole which is aligned with the first receiving light holes, and the code wheel can shield one by one and also can not shield the light channel between the first emitting light holes and the second emitting light holes one by one along with the rotation of the code wheel.

7. The meter electromechanical synchronization light guide of claim 6, wherein a scanning sequence of a number of said emission lights is from a first light channel which can be blocked by said code wheel to a sequentially ordered last light channel, either in or against a direction of rotation of said code wheel.

8. The electromechanical synchronous light guide device for the measuring meter according to any of claims 1-7, wherein the receiving light guide member is a claw-shaped structure having a plurality of light receiving ports located at the top of the claw, a common light returning port located at the bottom of the claw, and a plurality of claw rods connecting the respective light receiving ports to the light returning port, and the light receiving ports are arranged in a fan shape.

9. The electromechanical synchronous light guide device of the meter according to claim 8, wherein the receiving light guide member is formed with a slope or a reflection structure at the bottom of the claw root for totally refracting upward the light transmitted by the plurality of claw rods.

10. An intelligent meter head, comprising an electromechanical synchronization light guide device of a meter and a meter according to any one of claims 1 to 9, wherein the meter is a mechanical meter, and the information transmission mode of the meter to the communication module is only the connection of optical information transmission.