CN110211361B - Household gas self-service meter reading method and device - Google Patents
Household gas self-service meter reading method and device Download PDFInfo
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Abstract
The invention discloses a household gas self-service meter reading method and a self-service meter reading device thereof. The household gas self-service meter reading method comprises the following steps: reading a plurality of digital displays in the gas mechanical dial plate by utilizing a reading mode of a series of electric pulse signal sequences represented by binary system to acquire current gas consumption information of the gas mechanical dial plate; transmitting current gas consumption information by using a metal gas pipeline connected with a gas mechanical dial as a channel; and comparing the received electric pulse signal sequence strings in real time through a database to obtain a plurality of digital representation signals respectively representing the display information of a plurality of digital displays, and forming a reading value of the gas mechanical dial plate. The invention realizes the self-help meter reading function of the gas electronic dial plate on the basis of not changing the original gas mechanical dial plate, and also utilizes the metal gas pipeline as a signal transmission channel, thereby not only ensuring the accuracy and the safety of data acquisition, but also reducing the cost as much as possible.
Description
Technical Field
The invention relates to a self-service meter reading method and self-service meter reading equipment thereof in the technical field of intelligent home, in particular to a household gas self-service meter reading method and self-service meter reading equipment thereof.
Background
With the continuous development of electronic technology, computer technology and communication technology, the automation process of each industry is gradually accelerated, so that higher requirements are provided for the real-time performance, reliability and information quantity of gas use data acquisition in the automatic meter reading process of household gas. The traditional manual meter reading mode of the gas company is time-consuming and labor-consuming, accuracy and timeliness cannot be guaranteed, meter reading is difficult to enter a house, a plurality of door locks are provided, labor intensity is high, efficiency is low, criminals use the meter reading at the entrance to carry out crimes, social factors are complex, and other objective problems cause great troubles to both gas users and the gas company, and the meter reading mode is not suitable for social development.
At present, a gas electronic dial plate is also developed, and the dial plate is designed into an electronic product, so that the remote meter reading is only needed. However, it is difficult to implement the gas electronic dial in the old community, and the main factor is that the cost of the gas electronic dial is nearly ten times higher than that of the gas mechanical dial, so that the conventional gas mechanical dial can be used in the eyes of common people, and how to read the meter is a matter of the gas company, how much gas fee and how much gas fee the common people spend, and no preference exists because of the gas electronic dial, so the common people do not want to change the money. The gas electronic dial plate is high in cost, residents are more, and gas companies are not willing to pay money for replacement, so that the gas electronic dial plate is only suitable for being installed in new districts which do not live in compulsory mode.
Disclosure of Invention
Aiming at the prior technical problem, the invention provides a household gas self-service meter reading method and a self-service meter reading device thereof, which can update and upgrade the prior gas mechanical dial plate and realize the same effect as a gas electronic dial plate on the reading.
The invention is realized by adopting the following technical scheme: a household gas self-service meter reading method comprises the following steps:
reading a plurality of digital displays in a gas mechanical dial plate to acquire current gas consumption information of the gas mechanical dial plate, wherein each digital display comprises seven segments of digital display tubes, and the acquisition method of the current gas consumption information comprises the following steps:
(1) establishing a database, wherein the database comprises: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal which respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8; the meter reading request signal, the meter reading completion signal, the meter reading receiving signal, the transmission completion signal and the nine digital representation signals are all represented by binary;
(2) receiving the meter reading request signal, and projecting light to each digital display according to the meter reading request signal;
(3) sensing the quantity of refracted light rays refracted by a corresponding seven-segment digital display tube on each digital display, and forming photocurrent according to the quantity of the refracted light rays;
(4) judging whether the photocurrent exceeds a preset photocurrent, if so, generating an electric pulse signal which is represented by '0' or '1', otherwise, not generating the electric pulse signal which is represented by '1' or '0', so that each digital display correspondingly forms a series of electric pulse signal sequence strings represented by binary, and the electric pulse signal sequence strings of the plurality of digital displays are the current gas consumption information;
step two, transmitting the current gas consumption information, wherein the transmission method of the current gas consumption information comprises the following steps:
(1) sending the meter reading completion signal;
(2) issuing the meter reading receiving signal according to the meter reading completion signal;
(3) transmitting the current gas consumption information according to the meter reading receiving signal;
(4) after the current gas consumption information is transmitted, the transmission completion signal is sent;
the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are formed by one channel and one on-off at preset interval time; the channel is a metal gas pipeline connected with the gas mechanical dial plate.
And step three, comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate.
As a further improvement of the above scheme, a photoelectric detection system is installed on the gas mechanical dial plate, and the photoelectric detection system includes:
a light source for emitting light onto the plurality of digital displays;
the photoelectric receivers correspond to the digital displays, each photoelectric receiver comprises seven photosensitive devices which correspond to the seven segments of digital display tubes of the corresponding digital display one by one, and each photosensitive device is used for sensing the quantity of refracted light rays generated after the corresponding digital display tube is irradiated by the light source and forming a photocurrent according to the quantity of the refracted light rays;
and the first data processor judges whether the photocurrent exceeds a preset photocurrent, if so, an electric pulse signal is generated and is represented by '0' or '1', otherwise, the electric pulse signal is not generated and is represented by '1' or '0', and therefore, each digital display correspondingly forms a string of electric pulse signal sequences represented by binary.
Further, the photosensitive device is a photodiode or a phototriode.
As a further improvement of the above solution, the light source is a visible light beam.
As a further improvement of the above scheme, the household gas self-service meter reading method further comprises the following steps:
and step four, calculating a difference value between the values read by the gas mechanical dial plate for the two times, wherein the difference value is the gas consumption of the gas mechanical dial plate in the period corresponding to the values read by the two times.
The invention also provides a household gas self-service meter reading device which is used for reading a plurality of digital displays in a gas mechanical dial plate so as to obtain the current gas consumption information of the gas mechanical dial plate, wherein each digital display comprises seven segments of digital display tubes, and the household gas self-service meter reading device comprises a photoelectric detection system and a data processing system;
the photodetection system comprises:
a light source for emitting light onto the plurality of digital displays;
the photoelectric receivers correspond to the digital displays, each photoelectric receiver comprises seven photosensitive devices which correspond to the seven segments of digital display tubes of the corresponding digital display one by one, and each photosensitive device is used for sensing the quantity of refracted light rays generated after the corresponding digital display tube is irradiated by the light source and forming a photocurrent according to the quantity of the refracted light rays; and
the data processor I judges whether the photocurrent exceeds a preset photocurrent, if so, an electric pulse signal is generated and is represented by '0' or '1', otherwise, the electric pulse signal is not generated and is represented by '1' or '0', so that each digital display correspondingly forms a string of electric pulse signal sequences represented by binary, and the electric pulse signal sequences of the plurality of digital displays are the current gas consumption information;
the data processing system includes:
a database, said database comprising: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal which respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8; the meter reading request signal, the meter reading completion signal, the meter reading receiving signal, the transmission completion signal and the nine digital representation signals are all represented by binary; and
the second data processor, its data processing method includes the following steps:
(1) sending the meter reading request signal to the data processor, wherein the data processor acquires the current gas consumption information according to the meter reading request signal and then sends a meter reading completion signal to the data processor II;
(2) transmitting the meter reading receiving signal to the data processor at once according to the meter reading completion signal, wherein the data processor transmits the current gas consumption information according to the meter reading receiving signal, and after the transmission of the current gas consumption information is completed, the data processor transmits the transmission completion signal to the data processor II;
(3) comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate;
the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are formed by one channel and one on-off at preset interval time; the channel is a metal gas pipeline connected with the gas mechanical dial plate.
As a further improvement of the above scheme, the data processing system adopts a handheld data transceiver module, the handheld data transceiver module comprises a microprocessor control unit, and the microprocessor control unit is connected with a power supply module, a data uploading module, a data storage module, a key module and a liquid crystal display module; the microprocessor control unit can select different watch numbers to read the dial data, can continuously read all the dial data, and has a history record inquiry function; the microprocessor control unit uploads data to a gas company through the data uploading module, stores the data through the data storage module, issues an instruction to the data processor through the key module, and displays the data through the liquid crystal display module.
Further, the data uploading module adopts wireless communication.
As a further improvement of the above scheme, the photosensitive device is a photodiode or a phototriode.
As a further improvement of the above solution, the light source is a visible light beam.
The invention realizes the function of self-help meter reading of the household fuel gas of the fuel gas electronic dial plate on the basis of not changing the original fuel gas mechanical dial plate, and the invention also utilizes the metal fuel gas pipeline as a signal transmission channel and sends a transmission protocol to obtain the acquired dial plate data, thereby not only ensuring the accuracy and the safety of data acquisition, but also reducing the cost as much as possible; the invention can select different watch numbers to read the dial data, can also continuously read all the dial data, and simultaneously has a history record query function, and the abnormal use condition of the gas of a user can be checked by utilizing the function, thereby eliminating potential safety hazard. The invention can also send the received data to the gas company by wireless or wire, and the gas company calculates the corresponding fee according to the received data.
Drawings
Fig. 1 is a functional module schematic diagram of a household gas self-service meter reading device in embodiment 1 of the present invention.
Fig. 2 is a digital display in a gas mechanical dial plate applying the household gas self-service meter reading device in fig. 1.
Fig. 3 is a schematic view of the working process of the photodetection system in fig. 1.
Fig. 4 is a flowchart illustrating a data processing method of the second data processor in fig. 1.
Fig. 5 is a functional block diagram of a handheld data transceiver module employed in the data processing system of fig. 1.
Fig. 6 is a schematic flow chart of a household gas self-service meter reading method in embodiment 2 of the present invention.
Fig. 7 is a schematic flow chart of the method for acquiring the current gas consumption information in fig. 6.
Fig. 8 is a flowchart illustrating a transmission method of the current gas usage information in fig. 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Referring to fig. 1, the household gas self-service meter reading device of the embodiment is used for reading a plurality of digital displays in a gas mechanical dial plate to obtain current gas consumption information of the gas mechanical dial plate, and each digital display includes seven segments of digital display tubes (as shown in fig. 2). The household gas self-service meter reading equipment comprises a photoelectric detection system and a data processing system.
Referring to fig. 3, the photo detection system includes a light source, a plurality of photo receivers, and a first data processor. The light source may be a visible light beam for emitting light to a plurality of digital displays in the gas machine dial. The photoelectric receivers correspond to digital displays in the gas mechanical dial plate, each photoelectric receiver comprises seven photosensitive devices which correspond to seven segments of digital display tubes of the corresponding digital display one by one, and each photosensitive device is used for sensing the amount of refracted light generated after the corresponding digital display tube is irradiated by the light source and forming photocurrent according to the amount of the refracted light.
And the data processor judges whether the photocurrent exceeds a preset photocurrent, if so, the data processor generates an electric pulse signal which is represented by '0' or '1', otherwise, the data processor does not generate the electric pulse signal which is represented by '1' or '0', so that each digital display correspondingly forms a string of electric pulse signal sequences represented by binary, and the electric pulse signal sequences of the plurality of digital displays are the current gas consumption information.
When the gas meter is installed, the light source, the photoelectric receiver and the data processor can be directly fixed in a meter reading area on the gas mechanical dial plate, so that the gas mechanical dial plate does not need to be adjusted, the gas mechanical dial plate does not need to be opened, and the service life of the gas mechanical dial plate cannot be influenced by the implementation of the scheme. For the first data processor, a chip design may be adopted alone, or the first data processor may be integrated in an operating circuit of the photoelectric receiver, or may be a program written in an operating chip of the photoelectric receiver.
Of course, the photoelectric detection system can also be other digital acquisition modules, and the data acquisition device is additionally arranged on the basis of not changing the original mechanical dial plate, so that the accuracy and the safety of data acquisition are ensured, and the cost is reduced as much as possible.
The data processing system comprises a database and a second data processor. The database and the data processor can be virtual parts, so that the database and the data processor can be designed to be loaded into programs of electronic products such as mobile phones, computers, electronic cabinets and the like, and can be configured with other electronic products according to the use requirements of users.
The database includes: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8. The meter reading request signal, the meter reading completion signal, the meter reading receiving signal, the transmission completion signal and the nine digital representation signals are all represented by binary. Of course, the database may store more other information as needed.
Referring to fig. 4, the data processing method of the second data processor includes the following steps:
(1) sending the meter reading request signal to the data processor, wherein the data processor acquires the current gas consumption information according to the meter reading request signal and then sends a meter reading completion signal to the data processor II;
(2) transmitting the meter reading receiving signal to the data processor at once according to the meter reading completion signal, wherein the data processor transmits the current gas consumption information according to the meter reading receiving signal, and after the transmission of the current gas consumption information is completed, the data processor transmits the transmission completion signal to the data processor II;
(3) and comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate.
The meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are formed by one channel and one on-off at preset interval time;
referring to fig. 5, the data processing system may employ a handheld data transceiver module, which includes a microprocessor control unit, and the microprocessor control unit is connected to a power supply module, a data uploading module, a data storage module, a key module, and a liquid crystal display module. The microprocessor control unit can select different watch numbers to read the dial data, can continuously read all the dial data, and has a history record inquiry function; the microprocessor control unit uploads data to a gas company through the data uploading module, stores the data through the data storage module, issues an instruction to the data processor through the key module, and displays the data through the liquid crystal display module.
Therefore, the invention can select different watch numbers to read the dial data, can also continuously read all the dial data, and has the function of historical record inquiry, and the abnormal gas use condition of the user can be checked by utilizing the function, thereby eliminating the potential safety hazard. The data receiving system can also upload the received data to a gas company through a data uploading module, and the gas company calculates corresponding expenses according to the received data.
The invention uses the metal gas pipeline as a transmission channel, and sends a transmission protocol to acquire the dial data acquired by the digital acquisition module. The existing metal gas pipeline is used as a signal transmission channel, so that the design cost and the design difficulty are greatly reduced. Before the gas pipeline is used as a transmission channel, the necessary modification needs to be carried out by measuring the resistance of the pipeline, and if the gas pipeline is not metal, static electricity is generated, so that the gas pipeline is unsafe. If the pipeline is not a continuous conductor, a cable can be connected to the pipeline insulation to ensure the conduction of the pipeline, and the pipeline is equivalent to a cable at the moment and can transmit data. The handheld data transceiver module can be connected with a pipeline to send a pulse command such as 10101010, and then the pulse command is transmitted to the gas meter direct-reading digital acquisition module through the pipeline, at the moment, the digital acquisition module starts to work, and the acquired data is sent back to the handheld data transceiver module through the pipeline to be stored, so that the data can be sent to a gas head office at a later stage.
The data storage module in the hand-held data transceiver module can adopt a W25Q128 chip which has 16 Mbyte large storage and performs data interaction with the microprocessor through SPI communication. The data uploading module can transmit data to a gas main company in a wired communication or wireless communication mode, and the gas main company calculates corresponding cost according to the received data. The microprocessor control unit can adopt an STM32F103ZET6 single chip microcomputer.
The invention transmits an intense light source to the gas meter dial, and projects the data on the dial to a photoelectric receiving board (namely a circuit board provided with a plurality of photoelectric receivers) by refraction, and seven photosensitive devices (photosensitive diodes, phototriodes and the like) are arranged on the photoelectric receiving board according to the positions of seven-segment digital tubes, as shown in figure 2. Because the dial data are black characters with white background, the light refracted to the photosensitive device is dark or weak, and when the photosensitive device is dark in light, the reverse current is extremely weak, so that dark current is generated; when the illumination is strong, the reverse current rapidly increases to tens of microamperes, generating a photocurrent. The larger the intensity of light, the larger the reverse current so as to convert the light signal into an electric pulse signal, when the dial data is 2, the electric pulse signal string is 1101101, and then the electric pulse signal is transmitted to a digital decoding unit, and the digital decoding unit can obtain the corresponding number, as shown in fig. 3.
Example 2
The embodiment provides a household gas self-service meter reading method, please refer to fig. 6, which includes the following steps.
Reading a plurality of digital displays in the gas mechanical dial plate to obtain the current gas consumption information of the gas mechanical dial plate. Each digital display comprises seven segments of digital display tubes.
Referring to fig. 7, the method for acquiring the current gas consumption information includes the following steps:
(1) establishing a database, wherein the database comprises: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal which respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8; the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the transmission completion signal adopt binary representation;
(2) receiving the meter reading request signal, and projecting light to each digital display according to the meter reading request signal;
(3) sensing the quantity of refracted light rays refracted by a corresponding seven-segment digital display tube on each digital display, and forming photocurrent according to the quantity of the refracted light rays;
(4) and judging whether the photocurrent exceeds a preset photocurrent, if so, generating an electric pulse signal which is represented by '0' or '1', otherwise, not generating the electric pulse signal which is represented by '1' or '0', so that each digital display correspondingly forms a series of electric pulse signal sequence strings represented by binary, and the electric pulse signal sequence strings of the plurality of digital displays are the current gas consumption information.
And step two, transmitting the current gas consumption information.
Referring to fig. 8, the method for transmitting the current gas consumption information includes the following steps:
(1) sending the meter reading completion signal;
(2) issuing the meter reading receiving signal according to the meter reading completion signal;
(3) transmitting the current gas consumption information according to the meter reading receiving signal;
(4) after the current gas consumption information is transmitted, the transmission completion signal is sent;
the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are formed by one channel and one on-off at preset interval time; the channel is a metal gas pipeline connected with the gas mechanical dial plate.
Because the electric pulse signal sequence string representing the current gas consumption information is definitely a seven-segment digital display tube corresponding to the same digital display tube, the electric pulse signal sequence string representing the current gas consumption information is generally seven digits, and the reading information of two adjacent digital display tubes can be distinguished for one segment according to 7 digits. Of course, the two adjacent electric pulse signal sequence strings can be distinguished by switching on and switching off at a preset interval time, the interval time of the first interval time is different from that of the second interval time, and the reading information of the two adjacent digital display tubes can be distinguished in this way.
And step three, comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate.
And step four, calculating a difference value between the values read by the gas mechanical dial plate for the two times, wherein the difference value is the gas consumption of the gas mechanical dial plate in the period corresponding to the values read by the two times.
Of course, in step four, another calculation may be performed by observing the values read twice before and after the gas machine dial.
There are many ways to implement the household gas self-service meter reading method of this embodiment, for example, for the acquisition of the electric pulse signal sequence string representing the current gas usage information, the photoelectric detection system described in embodiment 1 may be adopted, and details will not be described again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A household gas self-service meter reading method is characterized by comprising the following steps:
reading a plurality of digital displays in a gas mechanical dial plate to acquire current gas consumption information of the gas mechanical dial plate, wherein each digital display comprises seven segments of digital display tubes, and the acquisition method of the current gas consumption information comprises the following steps:
(1) establishing a database, wherein the database comprises: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal which respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8; the meter reading request signal, the meter reading completion signal, the meter reading receiving signal, the transmission completion signal and the nine digital representation signals are all represented by binary;
(2) receiving the meter reading request signal, and projecting light to each digital display according to the meter reading request signal;
(3) sensing the quantity of refracted light rays refracted by a corresponding seven-segment digital display tube on each digital display, and forming photocurrent according to the quantity of the refracted light rays;
(4) judging whether the photocurrent exceeds a preset photocurrent, if so, generating an electric pulse signal which is represented by '0' or '1', otherwise, not generating the electric pulse signal which is represented by '1' or '0', so that each digital display correspondingly forms a series of electric pulse signal sequence strings represented by binary, and the electric pulse signal sequence strings of the plurality of digital displays are the current gas consumption information;
step two, transmitting the current gas consumption information, wherein the transmission method of the current gas consumption information comprises the following steps:
(1) sending the meter reading completion signal;
(2) issuing the meter reading receiving signal according to the meter reading completion signal;
(3) transmitting the current gas consumption information according to the meter reading receiving signal;
(4) after the current gas consumption information is transmitted, the transmission completion signal is sent;
the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are transmitted by adopting a channel at preset interval time for one on-off; the channel is a metal gas pipeline connected with the gas mechanical dial plate;
and step three, comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate.
2. The household gas self-service meter reading method according to claim 1, wherein a photoelectric detection system is mounted on the gas mechanical dial plate, and the photoelectric detection system comprises:
a light source for emitting light onto the plurality of digital displays;
the photoelectric receivers correspond to the digital displays, each photoelectric receiver comprises seven photosensitive devices which correspond to the seven segments of digital display tubes of the corresponding digital display one by one, and each photosensitive device is used for sensing the quantity of refracted light rays generated after the corresponding digital display tube is irradiated by the light source and forming a photocurrent according to the quantity of the refracted light rays;
and the first data processor judges whether the photocurrent exceeds a preset photocurrent, if so, an electric pulse signal is generated and is represented by '0' or '1', otherwise, the electric pulse signal is not generated and is represented by '1' or '0', and therefore, each digital display correspondingly forms a string of electric pulse signal sequences represented by binary.
3. The household gas self-service meter reading method according to claim 2, wherein the photosensitive device is a photosensitive diode or a photosensitive triode.
4. The household gas self-service meter reading method according to claim 2, wherein the light source is a visible light beam.
5. The household gas self-service meter reading method according to claim 1, further comprising the following steps:
and step four, calculating a difference value between the values read by the gas mechanical dial plate for the two times, wherein the difference value is the gas consumption of the gas mechanical dial plate in the period corresponding to the values read by the two times.
6. A household gas self-help meter reading device is used for reading a plurality of digital displays in a gas mechanical dial plate so as to obtain the current gas consumption information of the gas mechanical dial plate, wherein each digital display comprises seven segments of digital display tubes;
the photodetection system comprises:
a light source for emitting light onto the plurality of digital displays;
the photoelectric receivers correspond to the digital displays, each photoelectric receiver comprises seven photosensitive devices which correspond to the seven segments of digital display tubes of the corresponding digital display one by one, and each photosensitive device is used for sensing the quantity of refracted light rays generated after the corresponding digital display tube is irradiated by the light source and forming a photocurrent according to the quantity of the refracted light rays; and
the data processor I judges whether the photocurrent exceeds a preset photocurrent, if so, an electric pulse signal is generated and is represented by '0' or '1', otherwise, the electric pulse signal is not generated and is represented by '1' or '0', so that each digital display correspondingly forms a string of electric pulse signal sequences represented by binary, and the electric pulse signal sequences of the plurality of digital displays are the current gas consumption information;
the data processing system includes:
a database, said database comprising: a meter reading request signal, a meter reading completion signal, a meter reading receiving signal and a transmission completion signal which respectively represent nine digital representation signals of numbers 0, 1, 2, 3, 4, 5, 6, 7 and 8; the meter reading request signal, the meter reading completion signal, the meter reading receiving signal, the transmission completion signal and the nine digital representation signals are all represented by binary; and
the second data processor, its data processing method includes the following steps:
(1) sending the meter reading request signal to the data processor, wherein the data processor acquires the current gas consumption information according to the meter reading request signal and then sends a meter reading completion signal to the data processor II;
(2) transmitting the meter reading receiving signal to the data processor at once according to the meter reading completion signal, wherein the data processor transmits the current gas consumption information according to the meter reading receiving signal, and after the transmission of the current gas consumption information is completed, the data processor transmits the transmission completion signal to the data processor II;
(3) comparing the received electric pulse signal sequence strings in real time through the database to obtain a plurality of digital representation signals respectively representing the display information of the plurality of digital displays, and forming a reading value of the gas mechanical dial plate;
the meter reading request signal, the meter reading completion signal, the meter reading receiving signal and the current gas consumption information are electric pulse signal sequence strings represented by binary system, and all the electric pulse signal sequence strings are formed by one channel and one on-off at preset interval time; the channel is a metal gas pipeline connected with the gas mechanical dial plate.
7. The household gas self-service meter reading device as claimed in claim 6, wherein the data processing system adopts a hand-held data transceiver module, the hand-held data transceiver module comprises a microprocessor control unit, and the microprocessor control unit is connected with a power supply module, a data uploading module, a data storage module, a key module and a liquid crystal display module; the microprocessor control unit can select different watch numbers to read the dial data, can continuously read all the dial data, and has a history record inquiry function; the microprocessor control unit uploads data to a gas company through the data uploading module, stores the data through the data storage module, issues an instruction to the data processor through the key module, and displays the data through the liquid crystal display module.
8. The household gas self-service meter reading device as claimed in claim 7, wherein the data uploading module adopts wireless communication.
9. The household gas self-service meter reading device as claimed in claim 6, wherein the photosensitive device is a photosensitive diode or a photosensitive triode.
10. The household gas self-service meter reading device as claimed in claim 6, wherein the light source is a visible light beam.
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