CN202442720U - Counter reading device for water/electricity/gas flow meter - Google Patents
Counter reading device for water/electricity/gas flow meter Download PDFInfo
- Publication number
- CN202442720U CN202442720U CN 201120536641 CN201120536641U CN202442720U CN 202442720 U CN202442720 U CN 202442720U CN 201120536641 CN201120536641 CN 201120536641 CN 201120536641 U CN201120536641 U CN 201120536641U CN 202442720 U CN202442720 U CN 202442720U
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- Prior art keywords
- counting
- reading device
- electricity
- water
- character wheel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a counter reading device for a water/electricity/gas flow meter, comprising a counter wheel and a signal processing circuit, and further comprising magnets and magnetic switches. The magnets are distributed in non-adjacent number areas on the counter wheel, and the magnetic switches are mounted outside the circumference of the counter wheel and connected with the signal processing circuit. The counter reading device does not work synchronously with a mechanical counter wheel, not requiring long-time continuous working, but be energized, and read numbers pointed by the mechanical wheel directly only if a counter reading is required, thereby greatly improving the stability and reliability of the remote transmission system.
Description
Technical field
The utility model relates to a kind of counting reading device, especially relates to the counting reading device of a kind of water/electricity/air-flow scale.
Background technology
Usually; The structure of remote transmission formula water, electricity, gas table is on some gears of table, to place magnet steel or reflectance coating, when gear rotates, triggers tongue tube (Hall element) or optoelectronic switch action, and the moving circle of revolution produces a pulse signal; Far-end computer must continuously receive these pulse signals and count; Thereby be converted into the flow of water, electricity, gas, this process can not be interrupted in the lifetime 6-8 of table, otherwise can cause the asynchronous of electronics and mechanical reading; Therefore, adopt this structure just to require system stability very high, the necessary steady and continuous work of system, and require power supply to be interrupted.Being interrupted appears in system or power supply or fault will cause the reading of far-end electronical reading and mechanical movement inconsistent, thereby causes far-end inaccurate by the water, electricity, gas amount that electric signal is converted into.
Summary of the invention
The purpose of the utility model is to provide the counting reading device of a kind of water/electricity/air-flow scale, and this device need not to count synchronously with mechanical counter, only when regular statistic flow, just makes electronic unit work also accurately read the counting on the table.
For realizing above-mentioned purpose, adopt following technical approach to solve:
The counting reading device of a kind of water/electricity/air-flow scale; Comprise counting character wheel, signal processing circuit, it is characterized in that also comprising at least 4 magnet, magnetic switch; Said 4 distribution of magnets are in the non-conterminous numeric area of counting character wheel; Magnetic switch is installed in outside the circumference of counting character wheel, and magnetic switch is connected with signal processing circuit.
Said magnet can guarantee that two magnet can direct neighbor for 4 or 5.
The N utmost point of said magnet or the S utmost point are consistent with the radius of counting character wheel.
Said magnetic switch is 4, with the counting character wheel numeric area over against installation.
The counting reading device of water/electricity/air-flow scale compared with prior art has following advantage:
(1) reading of water, electricity, gas table only relies on former mechanical character wheel counting and keeps; Data counted and preserved to electronic unit need not synchronously with mechanical character wheel; So do not need long-term continuous working; Only when checking meter reading, just power up the reading that the mechanical character wheel indication is directly read in work, increased substantially the stability and the reliability of distance transmission system;
(2) with contactless Photoelectric Detection count signal, can not produce mechanical wear;
(3) solve in the problem that reads by the most black intermediateness to transparent position, guarantee reading accurately.
Description of drawings
Figure l is the synoptic diagram of an embodiment of utility model.
Fig. 2 is the circuit theory diagrams of an embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1; 4 magnet 2 are installed on the counting character wheel 1 of flowmeter; 4 magnet 2 are distributed in the counting character wheel 1 non-conterminous numeric area; Wherein magnet 2 can not be excessive, with avoid with adjacent counting character wheel 1 on the magnet installed character wheel 1 takes place to attract to cause counting rotates malfunctioning and signal disturbs.
Suppose that the position that the numeric area of counting character wheel 1 is equipped with magnet representes " 1 ", " 0 " is represented in the position that magnet is not installed, and then with being arranged as of " 0 " coding is installed to " 1 " that numeral " 9 " forms from digital " 0 ".
It installs coding can be for one of in the following coding:
0010010101，0010101001，0100100101，01001010101，0101001001，
0101010010，1001001010，1001010100，1010010010，1010100100。
The circumference of counting character wheel 1 is equipped with 4 magnetic switchs 3 outward; The numeric area of magnetic switch and counting character wheel 1 is over against installation; When magnetic switch and magnet over against the time represent " 1 ", otherwise be expressed as " 0 ", then count being arranged as that digital magnetic switch of character wheel 1 rotation forms and detect coding.The arrangement of magnetic switch must guarantee to detect that coding is unique does not repeat.
Wherein the N utmost point of magnet or the S utmost point are consistent with the radius of counting character wheel, can guarantee that like this magnetic switch when counting character wheel turns to certain position detects the magnetic pole of magnet, thereby magnetic switch is opened otherwise closure.
Above-mentioned is the counting reading device of counting on the character wheel at, as a plurality of counting character wheels are arranged on the flowmeter, can on each counting character wheel, this counting reading device be installed all accordingly.
Shown in Fig. 2; Magnetic switch 3 is connected with signal processing circuit, and signal processing circuit obtains the switch situation of magnetic switch, and many groups signal of magnetic switch 3 outputs is after single-chip microcomputer U1 handles; Single-chip microcomputer U1 adopts the 80C51 single-chip microcomputer of 51 series in the present embodiment; Can realize the telecommunication of data, and show the concrete reading on the flowmeter, for the counting that reads on the water, electricity, gas flowmeter provides convenience at the terminal.
When magnet so that coding " 0010010101 " to be installed, the detection coding that reads and the relation of reading were:
0001→0，1110→1，0000→2，0111→3，1000→4，
0011→5，0100→6，1001→7，0010→8，1100→9。
Claims (3)
1. the counting reading device of water/electricity/air-flow scale; Comprise counting character wheel (1), signal processing circuit, it is characterized in that also comprising at least 4 magnet (2), magnetic switch (3); Said magnet (2) is distributed in the non-conterminous numeric area of counting character wheel (1); Magnetic switch (3) is installed in outside the circumference of counting character wheel (1), and magnetic switch (3) is connected with signal processing circuit.
2. the counting reading device of water/electricity according to claim 1/air-flow scale is characterized in that magnet (2) is 4 or 5.
3. according to the counting reading device of the described water/electricity of claim 1/air-flow scale, it is characterized in that said magnetic switch (3) is 4, with the counting character wheel (1) numeric area over against installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536641 CN202442720U (en) | 2011-12-20 | 2011-12-20 | Counter reading device for water/electricity/gas flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536641 CN202442720U (en) | 2011-12-20 | 2011-12-20 | Counter reading device for water/electricity/gas flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442720U true CN202442720U (en) | 2012-09-19 |
Family
ID=46824164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120536641 Expired - Fee Related CN202442720U (en) | 2011-12-20 | 2011-12-20 | Counter reading device for water/electricity/gas flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442720U (en) |
-
2011
- 2011-12-20 CN CN 201120536641 patent/CN202442720U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20131220 |