[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduced a national patent for invention—a fast, high-precision, direct-reading, smart water meter system. The patent was applied for by Yangzhou Henglong Software Co., Ltd. and was authorized to be announced on February 8, 2017.
Description of the Invention The utility model relates to the field of water meters, in particular to a fast, high-precision photoelectric direct-reading intelligent water meter system.
BACKGROUND OF THE INVENTION Water meters are important measuring instruments for people's livelihood. In recent years, urban construction has developed rapidly, but the development of the water meter industry has been relatively slow. With the development of microelectronics and information technology, the development of smart meter technology has entered the fast lane, and various types of new technologies have been used in an endless stream.
At present, there are about more than 600 water meter manufacturers in China. Although downstream users of water plants and real estate companies are very scattered, competition is still fierce. The camera direct-reading remote water meter product was first developed by Beijing Beibao Electric Co., Ltd. in 2008. Due to the fact that image transmission and digital decoding are not mature, the product has not been popularized. The second-generation product was developed by Guangdong Huaxu and other companies in 20011, which solved the technical problems such as image processing, image transmission, and decoding and transmission, and made breakthroughs in this technology. At present, the product has been put into small batch production. , And in Beijing and other places to hang table test, large-scale promotion has yet to be applied to the test of the time and number of applications.
Although direct-reading water meters and meter reading systems have appeared in the market, problems such as slow meter reading, easy misreading, and environmental light are still present.
SUMMARY OF THE INVENTION In order to solve the above technical problem, the invention aims to provide a fast and high-precision optical direct reading type intelligent water meter system, which overcomes the ubiquitous structure of the existing remote direct reading water meter and is easily exposed to external light. Interference, mutual interference between adjacent transmission tubes, bus-type meter reading system is prone to failure, slow meter reading and other issues.
In order to achieve the above object of the invention, the present invention provides the following technical solution: a rapid and high-precision photoelectric direct-reading intelligent water meter system mainly composed of a plurality of terminal water meters, a meter reading concentrator, and a meter reading management system. Including a single-chip computer and multiple word wheel units, each word wheel unit includes a mechanical character wheel and a plurality of groups of light transmitting and receiving pairs, and a unique corresponding orthogonal code is used between a transmitting tube and a receiving tube in each group of light transmitting and receiving pairs. The serial CDMA signal communication connection, each code of the orthogonal code sequence CDMA signal also uses Manchester encoding to make it jump, and the microcontroller drives the transmitting tube of each group of light transmitting receiving pair tubes to send signals to the receiving tube.
The figure is a schematic diagram of the internal structure of the front view of the character wheel unit disclosed by the utility model In the above technical solution, the mechanical character wheel adopts a transmissive code disc, and the transmissive code disc comprises a disc body and a plurality of light-transmitting holes that are arranged in sequence in the circumferential direction and pass through the two disc surfaces of the disc body. The transmitting tube and the receiving tube of the light emitting receiving tube are respectively located on both sides of the disk body and are projected at the circumferential position. Each character wheel unit includes five light emitting receiving pair tubes, and the five emitting tubes of the five light emitting receiving pair tubes are sequentially disposed along the semi-circumferential direction, and the two adjacent side surfaces of the two emitting tubes located at both ends of the half circumferential direction. Between the formation of the 180 degree angle, the two launch tubes located at the ends of the half circumferential direction form an angle of 36 degrees with the adjacent two sides of the adjacent launch tubes, and the remaining three launch tubes An angle of 36 degrees is formed between two adjacent side surfaces, and five receiving tubes of the five light emitting receiving pair tubes are sequentially disposed in a half circumferential direction, and are located between two adjacent side surfaces of two receiving tubes located at both ends of the half circumferential direction. Forming an included angle of 180 degrees, the two receiving tubes located at the two ends of the half circumferential direction form an angle of 36 degrees with the adjacent two side surfaces of two adjacent receiving tubes, and the remaining three receiving tubes are adjacent to each other. An angle of 36 degrees is formed between the two sides.
The meter reading concentrator and the plurality of terminal water meters are powered by M_BUS bus communication, and are connected via GPRS or Ethernet internet access. Simultaneously with the combination of the meter reading concentrator polling and the terminal meter self-communicating, the meter reading concentrator sets the communication order of each terminal water meter, and when the latter terminal water meter detects that the former terminal water meter communication is completed, the latter terminal water meter The acquisition information is sent immediately. When the meter reading concentrator finds that the communication data of the individual terminal water meter is wrong, a separate call communication method is used. The M_BUS bus also has a DC/DC DC chopper.
Each terminal water meter is provided with a unique two-dimensional code, and the fast high-precision photoelectric direct-reading smart water meter system further includes a hand-held meter reading device, and the hand-held meter reading device and the terminal water meter mutually pass the two-dimensional code. Identify and communicate with the meter reading concentrator. The handheld meter reading device is a smart phone or a dedicated terminal device, and the smart phone or the dedicated terminal device is installed with a set APP. The MCU is a microprocessor with a firmware program that can perform prepaid, segmented metering, and segmented pricing functions.
Due to the use of the above technical solutions, the utility model has the following advantages compared with the prior art: the emission signal of each launch tube is not a simple light signal with no light, but a selected orthogonal code sequence. Each code adopts Manchester coding to ensure that each code has a jump and eliminates the influence of environmental factors; and different transmitters use different orthogonal code sequences to eliminate adjacent interference; the solution to the current difficulties in low-cost methods is solved. Solve the problem of interference between the adjacent transmitters and the transmitted light from the external environment to the readings; solve the problem of interference caused by the different transmitters receiving the interference between the tubes; increase the communication speed of the communication by increasing the bus driver, and develop a dedicated combination of polling and autonomous transmission on this basis. The communication protocol greatly reduces the waiting time for polling during meter reading, thereby greatly increasing the meter reading speed, improving the meter reading efficiency, and extending the battery life of the concentrator. In the utility model, the meter reading speed is reduced to 40 ms. Left and right; meter reading concentrator static power <5W; meter static power <4mA; meter reading concentrator failure, using image recognition technology and two-dimensional code Technology, the meter reading when the water meter is powered off, the unique identification of the water meter using the two-dimensional code, and the easy location of the two-dimensional code, solves the problem of water meter digital positioning, and uses the camera of a smartphone to realize low-cost image-based copying. Table; By setting up the prepayment module, the segmented measurement module, and the segment pricing module, the water meter system has the functions of prepayment, subsection measurement, and subsection pricing; and the step water quantity is set to not less than three levels to meet the national implementation of the ladder water price requirements.
For more information, please download the full specification of the patent.
More information on the latest technology of meter technology patents, please continue to pay attention to [instrument patents]
Description of the Invention The utility model relates to the field of water meters, in particular to a fast, high-precision photoelectric direct-reading intelligent water meter system.
BACKGROUND OF THE INVENTION Water meters are important measuring instruments for people's livelihood. In recent years, urban construction has developed rapidly, but the development of the water meter industry has been relatively slow. With the development of microelectronics and information technology, the development of smart meter technology has entered the fast lane, and various types of new technologies have been used in an endless stream.
At present, there are about more than 600 water meter manufacturers in China. Although downstream users of water plants and real estate companies are very scattered, competition is still fierce. The camera direct-reading remote water meter product was first developed by Beijing Beibao Electric Co., Ltd. in 2008. Due to the fact that image transmission and digital decoding are not mature, the product has not been popularized. The second-generation product was developed by Guangdong Huaxu and other companies in 20011, which solved the technical problems such as image processing, image transmission, and decoding and transmission, and made breakthroughs in this technology. At present, the product has been put into small batch production. , And in Beijing and other places to hang table test, large-scale promotion has yet to be applied to the test of the time and number of applications.
Although direct-reading water meters and meter reading systems have appeared in the market, problems such as slow meter reading, easy misreading, and environmental light are still present.
SUMMARY OF THE INVENTION In order to solve the above technical problem, the invention aims to provide a fast and high-precision optical direct reading type intelligent water meter system, which overcomes the ubiquitous structure of the existing remote direct reading water meter and is easily exposed to external light. Interference, mutual interference between adjacent transmission tubes, bus-type meter reading system is prone to failure, slow meter reading and other issues.
In order to achieve the above object of the invention, the present invention provides the following technical solution: a rapid and high-precision photoelectric direct-reading intelligent water meter system mainly composed of a plurality of terminal water meters, a meter reading concentrator, and a meter reading management system. Including a single-chip computer and multiple word wheel units, each word wheel unit includes a mechanical character wheel and a plurality of groups of light transmitting and receiving pairs, and a unique corresponding orthogonal code is used between a transmitting tube and a receiving tube in each group of light transmitting and receiving pairs. The serial CDMA signal communication connection, each code of the orthogonal code sequence CDMA signal also uses Manchester encoding to make it jump, and the microcontroller drives the transmitting tube of each group of light transmitting receiving pair tubes to send signals to the receiving tube.
The figure is a schematic diagram of the internal structure of the front view of the character wheel unit disclosed by the utility model
The meter reading concentrator and the plurality of terminal water meters are powered by M_BUS bus communication, and are connected via GPRS or Ethernet internet access. Simultaneously with the combination of the meter reading concentrator polling and the terminal meter self-communicating, the meter reading concentrator sets the communication order of each terminal water meter, and when the latter terminal water meter detects that the former terminal water meter communication is completed, the latter terminal water meter The acquisition information is sent immediately. When the meter reading concentrator finds that the communication data of the individual terminal water meter is wrong, a separate call communication method is used. The M_BUS bus also has a DC/DC DC chopper.
Each terminal water meter is provided with a unique two-dimensional code, and the fast high-precision photoelectric direct-reading smart water meter system further includes a hand-held meter reading device, and the hand-held meter reading device and the terminal water meter mutually pass the two-dimensional code. Identify and communicate with the meter reading concentrator. The handheld meter reading device is a smart phone or a dedicated terminal device, and the smart phone or the dedicated terminal device is installed with a set APP. The MCU is a microprocessor with a firmware program that can perform prepaid, segmented metering, and segmented pricing functions.
Due to the use of the above technical solutions, the utility model has the following advantages compared with the prior art: the emission signal of each launch tube is not a simple light signal with no light, but a selected orthogonal code sequence. Each code adopts Manchester coding to ensure that each code has a jump and eliminates the influence of environmental factors; and different transmitters use different orthogonal code sequences to eliminate adjacent interference; the solution to the current difficulties in low-cost methods is solved. Solve the problem of interference between the adjacent transmitters and the transmitted light from the external environment to the readings; solve the problem of interference caused by the different transmitters receiving the interference between the tubes; increase the communication speed of the communication by increasing the bus driver, and develop a dedicated combination of polling and autonomous transmission on this basis. The communication protocol greatly reduces the waiting time for polling during meter reading, thereby greatly increasing the meter reading speed, improving the meter reading efficiency, and extending the battery life of the concentrator. In the utility model, the meter reading speed is reduced to 40 ms. Left and right; meter reading concentrator static power <5W; meter static power <4mA; meter reading concentrator failure, using image recognition technology and two-dimensional code Technology, the meter reading when the water meter is powered off, the unique identification of the water meter using the two-dimensional code, and the easy location of the two-dimensional code, solves the problem of water meter digital positioning, and uses the camera of a smartphone to realize low-cost image-based copying. Table; By setting up the prepayment module, the segmented measurement module, and the segment pricing module, the water meter system has the functions of prepayment, subsection measurement, and subsection pricing; and the step water quantity is set to not less than three levels to meet the national implementation of the ladder water price requirements.
For more information, please download the full specification of the patent.
More information on the latest technology of meter technology patents, please continue to pay attention to [instrument patents]
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