CN111928915B - Direct reading method for passive photoelectric direct-reading electromechanical separation meter module - Google Patents
Direct reading method for passive photoelectric direct-reading electromechanical separation meter module Download PDFInfo
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- CN111928915B CN111928915B CN202010698980.2A CN202010698980A CN111928915B CN 111928915 B CN111928915 B CN 111928915B CN 202010698980 A CN202010698980 A CN 202010698980A CN 111928915 B CN111928915 B CN 111928915B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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Abstract
The invention discloses a direct reading method of a passive photoelectric direct-reading electromechanical separation meter module, belonging to the technical field of intelligent water meters, and the direct reading method comprises the following steps: recording the change state of the received signal of the photoelectric receiving module in the process that the direct-reading code disc rotates for one circle, and coding all the signal change states through the coder to form a code disc position comparison table; synchronizing the base meter and the direct-reading code disc, and enabling the number of the base meter to skip one wheel and change one wheel corresponding to the code value in the code comparison table; when the direct-reading code disc is used for the first time, the coding state on the direct-reading code disc is obtained, the numerical value on the base table is read manually, and the numerical value is issued to the direct-reading code disc to be assigned, so that the coding state on the direct-reading code disc corresponds to the numerical value of the base table; after the direct-reading code disc rotates, the coding state sequentially changes according to the sequence of the coding comparison table, so that the numerical value of the base table is read. By adopting a rolling coding mode, the digital change of the direct-reading code disc and the base table is synchronous, so that the initial state of the direct-reading code disc and the initial state of the base table are not limited.
Description
Technical Field
The invention belongs to the technical field of intelligent water meters, and particularly relates to a direct reading method of a passive photoelectric direct-reading electromechanical separation meter module.
Background
The intelligent water meter is a novel water meter which measures the water consumption by utilizing the modern microelectronic technology, the modern sensing technology and the intelligent IC card technology and transmits and settles the transaction of water consumption data, the direct reading water meter is an intelligent water meter which is convenient to be copied and collected, and the direct reading of the data of the character wheel of the meter is realized by adopting an absolute coding mode and an M-BUS communication mode, thereby effectively avoiding the door-to-door meter reading of a management department; the current required during communication is directly provided by the M-BUS BUS, and the meter reading mode becomes more convenient and reliable due to the presence of the M-BUS BUS, so that the productivity is effectively improved while manpower, material resources and financial resources are saved.
The passive photoelectric direct-reading meter is characterized in that a base meter synchronous turntable is added on a machine core of a traditional base meter, the base meter synchronous turntable synchronizes 0.01 bit of the base meter, 0.1 bit, one bit, ten bits, one hundred bits and thousand bits of the base meter are synchronized to five code discs of a passive photoelectric direct-reading electromechanical separation module through a decimal gear, and the numerical values of the five code discs of the electromechanical separation module are read to know the numerical values of the 0.1 bit, the one bit, the ten bits, the hundred bits and the thousand bits of the base meter. However, in order to ensure the correctness of the super-meter, the traditional photoelectric direct-reading meter needs to zero the base meter when a direct-reading code disc is installed to keep synchronization, but when the direct-reading code disc fails, the direct-reading code disc is replaced by a new direct-reading code disc, so that the coding state of the direct-reading code disc is difficult to calibrate with the base meter, and meter reading is affected.
Disclosure of Invention
The invention aims to solve the problem of high calibration difficulty of the direct-reading code disc and the base meter of the intelligent passive photoelectric direct-reading meter, and provides a direct-reading method of a passive photoelectric direct-reading electromechanical separation meter module.
The invention realizes the aim through the following technical scheme, and a direct reading method of a passive photoelectric direct-reading electromechanical separation meter module comprises the following steps:
recording the change state of the received signal of the photoelectric receiving module in the process that the direct-reading code disc rotates for one circle, and coding all the signal change states through the coder to form a code disc position comparison table;
synchronizing the base meter and the direct-reading code disc, and enabling the number of the base meter to skip one wheel and change one wheel corresponding to the code value in the code comparison table;
when the direct-reading code disc is used for the first time, the coding state on the direct-reading code disc is obtained, the numerical value on the base table is read manually, and the numerical value is issued to the direct-reading code disc to be assigned, so that the coding state on the direct-reading code disc corresponds to the numerical value of the base table;
after the direct-reading code disc rotates, the coding state sequentially changes according to the sequence of the coding comparison table, so that the numerical value of the base table is read.
Preferably, the number of the direct-reading code disks is the same as that of the base meters, and at least five base meters in the passive photoelectric direct-reading meter represent 0.1 digit, one digit, ten digits, hundred digits and thousand digits respectively.
Preferably, each direct-reading code disc comprises five groups of photoelectric emission modules and photoelectric receiving modules, the coding states are classified into thirty types through five codes, and each three coding states correspond to one numerical value of the base table.
Preferably, the correspondence method between the base table value and the encoding state is as follows:
a. the reading number of the direct reading code disc is 10 numbers which are 0-9 respectively;
b. setting each digit to be in an upper state, a middle state and a lower state, and dividing 10 digits of the base table into 30 states, wherein the number of the states is equal to the number of coding states of the direct-reading code disc;
c. and when the base table number is assigned on the coding comparison table, assigning the coding state of the direct-reading code disc corresponding to the base table number as 'middle'.
Compared with the prior art, the invention has the beneficial effects that: by adopting a rolling coding mode, the number of the base meter corresponds to the coding state of the coding comparison meter, the direct-reading code disc and the number of the base meter are changed synchronously, so that the base number of the direct-reading code disc and the number of the base meter are completely consistent during later meter reading, errors are not easy to occur, and when the direct-reading code disc is in initial correspondence, the base number of the direct-reading code disc can be set to be the same as that of the base meter no matter what the base number of the base meter is, so that the direct-reading code disc is not limited to the initial state of the base meter, and the direct-reading code disc is more convenient to use.
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FIG. 1 is a flow chart of a direct reading method of the present invention.
FIG. 2 is a table showing the corresponding implementation of the values of the base table and the encoding status according to the present invention.
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 of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a direct reading method for a passive photoelectric direct-reading electromechanical separation meter module includes the following steps:
step S101, recording the change state of a signal received by a photoelectric receiving module in the process of one-circle rotation of a direct-reading code disc, and coding all the change states of the signal to form a code disc position comparison table through an encoder;
step S102, synchronizing the base table and the direct-reading code disc, and enabling the number of the base table to skip one wheel and change one wheel corresponding to the code value in the code comparison table;
step S103, when the direct-reading code disc is used for the first time, the coding state on the direct-reading code disc is obtained, the numerical value on the base table is read manually, and the numerical value is issued to the direct-reading code disc to be assigned, so that the coding state on the direct-reading code disc corresponds to the numerical value of the base table;
and step S104, after the direct-reading code disc rotates, the coding state sequentially changes according to the sequence of the coding comparison table, so that the numerical value of the base table is read.
The number of the direct-reading code discs is the same as that of the base tables, at least five base tables in the passive photoelectric direct-reading meter represent values of 0.1 bit, one bit, ten bits, one hundred bits and thousand bits respectively, five groups of photoelectric emission modules and photoelectric receiving modules are arranged in each direct-reading code disc, coding states are divided into thirty types through five codes, every three coding states correspond to one value of the base tables, and the corresponding method of the values of the base tables and the coding states comprises the following steps: a. the reading number of the direct reading code disc is 10 numbers which are 0-9 respectively; b. setting each digit to be in an upper state, a middle state and a lower state, and dividing 10 digits of the base table into 30 states, wherein the number of the states is equal to the number of coding states of the direct-reading code disc; c. and when the base table number is assigned on the coding comparison table, assigning the coding state of the direct-reading code disc corresponding to the base table number as 'middle'.
The PCB circuit board is designed on the two sides of the direct-reading code disc, five groups of photoelectric emission modules and photoelectric receiving modules are sequentially designed on the circuit board according to a set angle, each photoelectric emission module is controlled by a single chip microcomputer to emit light, whether the corresponding photoelectric receiving module receives the light intensity of the photoelectric emission module is judged, 1 is judged if the corresponding photoelectric receiving module receives the light intensity, 0 is judged if the corresponding photoelectric receiving module does not receive the light intensity, the working states of the five groups of photoelectric emission modules and the photoelectric receiving modules of all character wheels are coded, 32 states can be realized by five coding bits, just 30 states are removed from the beginning and the ending, 3 states are respectively distributed to 0 and 9, the position sampling of the direct-reading code disc is realized by the working principle, and the 30 states are respectively: 01001. 01011, 00011, 10011, 10111, 00111, 00110, 01110, 01111, 01101, 11101, 11111, 11011, 11010, 11110, 10110, 10100, 11100, 01100, 01000, 11000, 11001, 10001, 10000, 10010, 00010, 00000, 00100, 00101, and 00001, wherein the 30 states are continuous states and are numbered 0-29, the reading of the direct-reading code disk is totally 10 numbers which are respectively 0-9, each number is set to be an upper state, a middle state and a lower state, the precision of the direct-reading code disk is effectively improved, so that the 10 numbers are also 30 states and are exactly equal to the 30 states of the code, when the bottom number of the direct-reading code disk is set, the numerical values of 0.1 bit, one bit, ten bit, hundred bit and thousand bit of the base table are firstly issued to the direct-reading code disk, the code values of the five bits at this time are sampled, and the five code values are respectively assigned to 0.1 bit, ten bit, hundred bit and hundred bit of the thousand bit of the five code table, and hundred bit are assigned values, the corresponding sequence number of the coding state is recorded simultaneously, after the base number is set, the coding state of each bit is different, and during later reading, the current direct-reading code disc position is determined according to the coding sequence number of each bit, for example: the real-time coding of the direct-reading code disc is 0.1 bit: 00000; bit: 00000; ten positions: 00110; hundred positions: 01001; thousand positions: 00000; if the real-time reading of the base table is 1234.5, the corresponding code comparison table is shown in fig. 2, and the correct base table value can be output only according to the sequentially changed code states.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A direct reading method of a passive photoelectric direct-reading electromechanical separation meter module is characterized by comprising the following steps:
recording the change state of the received signal of the photoelectric receiving module in the process that the direct-reading code disc rotates for one circle, and coding all the signal change states through the coder to form a code disc position comparison table;
synchronizing the base meter and the direct-reading code disc, and enabling the number of the base meter to skip one wheel and change one wheel corresponding to the code value in the code comparison table;
when the direct-reading code disc is used for the first time, the coding state on the direct-reading code disc is obtained, the numerical value on the base table is read manually, and the numerical value is issued to the direct-reading code disc to be assigned, so that the coding state on the direct-reading code disc corresponds to the numerical value of the base table;
after the direct-reading code disc rotates, the coding state sequentially changes according to the sequence of the coding comparison table, so that the numerical value of the base table is read.
2. The direct-reading method of the passive photoelectric direct-reading electromechanical separation meter module according to claim 1, wherein the number of the direct-reading code disks is the same as that of the base meters, and at least five base meters in the passive photoelectric direct-reading meter represent 0.1 digit, unit digit, tens digit, hundreds digit and thousands digit respectively.
3. The direct-reading method of the passive photoelectric direct-reading electromechanical separation meter module according to claim 2, wherein each direct-reading code disc internally comprises five groups of photoelectric emission modules and photoelectric receiving modules, and the five codes are used for dividing the code states into thirty types, and each three code states correspond to one numerical value of the base table.
4. The direct-reading method of the passive photoelectric direct-reading electromechanical separation meter module according to claim 3, wherein the correspondence method between the base table value and the encoding state is as follows:
a. the reading number of the direct reading code disc is 10 numbers which are 0-9 respectively;
b. setting each digit to be in an upper state, a middle state and a lower state, and dividing 10 digits of the base table into 30 states, wherein the number of the states is equal to the number of coding states of the direct-reading code disc;
c. and when the base table number is assigned on the coding comparison table, assigning the coding state of the direct-reading code disc corresponding to the base table number as 'middle'.
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