CN201463962U - Direct-reading meter system - Google Patents
Direct-reading meter system Download PDFInfo
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- CN201463962U CN201463962U CN 200920089343 CN200920089343U CN201463962U CN 201463962 U CN201463962 U CN 201463962U CN 200920089343 CN200920089343 CN 200920089343 CN 200920089343 U CN200920089343 U CN 200920089343U CN 201463962 U CN201463962 U CN 201463962U
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Abstract
The invention discloses a direct-reading meter system, comprising a base meter, a photoelectric sensing device, a microcomputer control device, a receiving circuit, a transmitting circuit and a power circuit, wherein the base meter is connected with the microcomputer device through the photoelectric sensing device; the receiving circuit and the transmitting circuit are respectively connected with the microcomputer device; and the power supply circuit provides power for the microcomputer device. The direct-reading meter system in the utility model is in communication connection with a meter reader or a concentrator by using the M-BUS communication interface technology, allows wiring modes of any connection branches, such as cascade type, star type, crossed type and the like, uses common twisted-pair cables and can install wiring in a non-polarity two-wire system manner. The numerical value at the water meter counter winder can be directly read by a photoelectric system without adopting a pulse signal transmitter, thus reducing fault rate of the water meter; accumulated pulse conversion is omitted, thus avoiding error generated by secondary metering of the water meter; and the electronic part in the meter has no mechanical contact with the metering device in the meter, thus ensuring the metering precision of the water meter.
Description
(1), technical field
The utility model relates to electrical instrumentation class field, is a kind of improvement technology of direct-reading gage specifically.
(2), background technology
Along with science and technology development, the centralized automatic meter-reading technology has also grown up at home, centralized automatic meter-reading promptly be can the many user's gauging tables of copy reading information, particularly with the mode of networking, but the thousands of user profile of copy reading at short notice.At present, centralized automatic meter-reading technology " sender table (tongue tube, Hall element)+data acquisition unit (or concentrator) " on market in occupation of leading position, but this series products has a fatal shortcoming: because be the mode that adopts accumulative total pulse conversion numerical value, promptly must adopt UPS (uninterrupted power source), and the sender table has adopted tongue tube or Hall element to make pulse sender sensor, extraneous interference is lost easily or is increased pulse, for example vibrations, water hammer, magnetize, cut off connection etc., all may cause the metering inaccurate.
Afterwards, the teletransmission reading technique that has occurred a kind of " passive direct-reading gage (resistance-type or infrared type)+data acquisition unit " again, wherein, the passive direct-reading gage of resistance-type is at the character wheel of gauging table or pointer part the resistance that some do not wait to be installed, rotate these resistance of contact with a sheet metal with character wheel, read the table tool value that different resistance values replaces this moment, but owing to use resistance as a kind of electronic component, it is subject to the particularly influence of humidity of temperature, the resistance loose contact, so the passive direct-reading gage of some resistance-type can make the total system paralysis in use for some time.The passive direct-reading gage of infrared type, it also claims photo-electric passive direct-reading gage, be one group of photoelectric commutator to be installed on one side at the stem-winder character wheel, on the numeration wheel group code groove is arranged, in different positions, the sign indicating number of opto-electronic conversion output has been represented the numerical value (being window value) of numeration wheel, also there is following shortcoming in it: the moment that is in carry when certain or several character wheel, just when half word appears in the reading window (particularly important when table is parked in this position), system can't judge that causing can't reading.This gauging table circuit structure complexity, element is many, and the circuit part volume is bigger, and cost is higher, so precision cost height, and yield rate is low, and prolonged application failure rate height when character wheel is in carry status, has the reading blind area, and what at this moment read will be random number.
(3), utility model content
The utility model is at the deficiencies in the prior art, propose a kind of under various environment accurate measurements all, and also correctly reliable, the low-power consumption of reading when half word appears in the reading window, direct-reading gage easy for installation.
The utility model is achieved through the following technical solutions.
A kind of direct-reading gage system comprises base table, photoelectric sensing apparatus, micro-computer controlling apparatus, receiving circuit, transtation mission circuit and power circuit.Base table is connected with micro-computer controlling apparatus by photoelectric sensing apparatus, and receiving circuit is connected with micro-computer controlling apparatus respectively with transtation mission circuit, and power-supplying circuit is the micro-computer controlling apparatus power supply.
A kind of direct-reading gage of the utility model system is connected with the communication of meter-copy device or concentrator and adopts the M-BUS communication interface technique, make the reliable communicating of 4.8kb/s, 2.4Km apart from the time, the nearly capacity of 500 contacts can be arranged; Allow the wire laying mode of wiring branch arbitrarily such as serial type, star-like, intersection, use general twisted-pair power cable, can nonpolarity two-wire system be installed by wiring, thereby significantly reduce construction volume.
Receiving circuit: main frame sends, and when slave received, circuital current remained unchanged, voltage floats. and resistance R 10 and R5 set threshold voltage, make when C5, C11 keep a stable voltage, receiving circuit that a little change in voltage is arranged the variation that just can draw level by comparator circuit.
Transtation mission circuit: main frame receives, and when slave sent, circuit voltage remained unchanged, and slave is controlled electric current by two triodes, and host side is by the variation received signal of electric current.
Power-supplying circuit: power unit is provided by two stabilivolts, divides two-way 5v and 10v, and 5v is used for to the single-chip microcomputer power supply, and 10v is used for powering to infrared transmitting tube.
Described direct-reading gage system, the gauge outfit numeral of water meter has respective coding, is encoded to 5, and gauge outfit and 3 * 5 infrared soft boards of arranging are used.
5 infrared transmitting tubes are connected in series on the infrared soft board, divide 3 row, by 3 triode controls.Luminous after the infrared transmitting tube conducting, utilize different materials infrared receiving tube to be ended or conducting to the absorption or the reflection of light, the level that collects to be encoded, corresponding corresponding digital just can " read-only " goes out the information of gauge outfit corresponding positions.Obtain other data of gauge outfit equally by the control of triode.Because power valve is to be connected in series (soft board wiring restriction), forward voltage 1.2v, institute is so that the infrared transmitting tube conducting simultaneously needs voltage of 6v at least, and this circuit supply voltage is 10v.
The coding device adopts the reflective photoelectric sensor of Japanese import, has advantages such as electrical quantity is stable, reaction velocity is fast, operating voltage is wide, body is small.
Adopt absolute coded system, make the absolutization of character wheel coding, each numeral all has unique encoding corresponding with it, and has been fixed on gauge outfit, need not carry out initialization during system works.This table is provided with unique address code, by the address code communication, has guaranteed the uniqueness of data during copy reading.Can also realize calling functions such as copy reading, affirmation fault water meter position by address code, be convenient to management and safeguard.And traditional pulse remote transmitting water meter is by physics wiring differentiation, and management is all relatively more difficult with maintenance.
The beneficial effects of the utility model are:
1, this table need not power supply, and its photoelectricity part is not worked at ordinary times, when copy reading by concentrator or the instantaneous powered operation of meter-copy device, reading of data rapidly.Need provide power supply to compare for a long time with traditional pulse remote transmitting water meter and reduce failure rate and operating cost, avoid the leakage meter phenomenon that causes because of power supply, power failure fault, guarantee that continuous data accurately and reliably.
2, technology adopts photoelectric device, is not subjected to magnetic interference fully, has fundamentally solved the easy problem affected by magnetic fields of pulse meter tool that adopts Hall element.
3, because direct-reading gage reads is table tool present reading,, can not influence the data result of direct-reading so no matter character wheel is just changeing reversing, still is being vibrations of pipeline or the like.
4, this table does not adopt the pulse signal signal transmitter by the direct water-meter reading counter of electro-optical system window numerical value, has reduced the failure rate of water meter; Need not add up pulse and convert, the error of having avoided the secondary instrument First Astronautic Research Institute for Measurement and Test to bring, metrology devices does not have Mechanical Contact in interior electronic section of table and the table, thereby has guaranteed the measuring accuracy of water meter.
(4), description of drawings
Fig. 1 is the receiving circuit principle schematic of a kind of direct-reading gage of the utility model system.
Fig. 2 is the transtation mission circuit principle schematic of a kind of direct-reading gage of the utility model system.
Fig. 3 is the power-supplying circuit principle schematic of a kind of direct-reading gage of the utility model system.
Fig. 4 is the structured flowchart synoptic diagram of a kind of direct-reading gage of the utility model system.
(5), embodiment
As shown in the figure, a kind of direct-reading gage system, comprising base table, photoelectric sensing apparatus, micro-computer controlling apparatus, receiving circuit, transtation mission circuit and power circuit. base table is connected with micro-computer controlling apparatus by photoelectric sensing apparatus, receiving circuit is connected with micro-computer controlling apparatus respectively with transtation mission circuit, and power-supplying circuit is the micro-computer controlling apparatus power supply.
Receiving circuit: main frame sends, and when slave received, circuital current remained unchanged, and voltage floats.Resistance R 10 and R5 set threshold voltage, make C5, C11 keep a stable voltage, when receiving circuit has a little change in voltage, and the variation that just can draw level by comparator circuit.
Transtation mission circuit: main frame receives, and when slave sent, circuit voltage remained unchanged, and slave is controlled electric current by two triodes, and host side is by the variation received signal of electric current.
Power-supplying circuit: power unit is provided by two stabilivolts, divides two-way 5v and 10v, and 5v is used for to the single-chip microcomputer power supply, and 10v is used for powering to infrared transmitting tube.
The coding device adopts the reflective photoelectric sensor of Japanese import, has advantages such as electrical quantity is stable, reaction velocity is fast, operating voltage is wide, body is small.
Described direct-reading gage system, the gauge outfit numeral of water meter has respective coding, is encoded to 5, and gauge outfit and 3 * 5 infrared soft boards of arranging are used.
5 infrared transmitting tubes are connected in series on the infrared soft board, divide 3 row, by 3 triode controls.Luminous after the infrared transmitting tube conducting, utilize different materials infrared receiving tube to be ended or conducting to the absorption or the reflection of light, the level that collects to be encoded, corresponding corresponding digital just can " read-only " goes out the information of gauge outfit corresponding positions.Obtain other data of gauge outfit equally by the control of triode.Because power valve is to be connected in series (soft board wiring restriction), forward voltage 1.2v, institute is so that the infrared transmitting tube conducting simultaneously needs voltage of 6v at least, and this circuit supply voltage is 10v.
Adopt absolute coded system, make the absolutization of character wheel coding, each numeral all has unique encoding corresponding with it, and has been fixed on gauge outfit, need not carry out initialization during system works.This table is provided with unique address code, by the address code communication, has guaranteed the uniqueness of data during copy reading.Can also realize calling functions such as copy reading, affirmation fault water meter position by address code, be convenient to management and safeguard.And traditional pulse remote transmitting water meter is by physics wiring differentiation, and management is all relatively more difficult with maintenance.
Claims (3)
1. direct-reading gage system, comprise base table, photoelectric sensing apparatus, micro-computer controlling apparatus, receiving circuit, transtation mission circuit and power circuit, it is characterized in that: base table is connected with micro-computer controlling apparatus by photoelectric sensing apparatus, receiving circuit is connected with micro-computer controlling apparatus respectively with transtation mission circuit, and power-supplying circuit is the micro-computer controlling apparatus power supply.
2. a kind of direct-reading gage according to claim 1 system, it is characterized in that: the gauge outfit numeral of water meter has respective coding, is encoded to 5, and gauge outfit and 3 * 5 infrared soft boards of arranging are used.
3. a kind of direct-reading gage according to claim 1 system, it is characterized in that: power unit is provided by two stabilivolts, divides two-way 5v and 10v, and 5v is used for to the single-chip microcomputer power supply, and 10v is used for powering to infrared transmitting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920089343 CN201463962U (en) | 2009-03-31 | 2009-03-31 | Direct-reading meter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920089343 CN201463962U (en) | 2009-03-31 | 2009-03-31 | Direct-reading meter system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463962U true CN201463962U (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920089343 Expired - Lifetime CN201463962U (en) | 2009-03-31 | 2009-03-31 | Direct-reading meter system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201463962U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116326A (en) * | 2012-12-22 | 2013-05-22 | 崔如春 | Data collection method and system of digital progressive type instrument |
| CN103728903A (en) * | 2013-12-26 | 2014-04-16 | 华立仪表集团股份有限公司 | User terminal |
| CN105608881A (en) * | 2015-08-06 | 2016-05-25 | 深圳浩宁达仪表股份有限公司 | Photoelectric encoder for direct reading of instrument character wheel group indicated value and interference suppression method thereof |
-
2009
- 2009-03-31 CN CN 200920089343 patent/CN201463962U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116326A (en) * | 2012-12-22 | 2013-05-22 | 崔如春 | Data collection method and system of digital progressive type instrument |
| CN103116326B (en) * | 2012-12-22 | 2015-04-22 | 崔如春 | Data collection method and system of digital progressive type instrument |
| CN103728903A (en) * | 2013-12-26 | 2014-04-16 | 华立仪表集团股份有限公司 | User terminal |
| CN105608881A (en) * | 2015-08-06 | 2016-05-25 | 深圳浩宁达仪表股份有限公司 | Photoelectric encoder for direct reading of instrument character wheel group indicated value and interference suppression method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HENAN SUNTRONT TECH CO., LTD Free format text: FORMER NAME: XINTIAN TECH CO., LTD., HENAN |
|
| CP01 | Change in the name or title of a patent holder |
Address after: In high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 19, Xintian science and Technology Park Patentee after: He'nan Suntront Tech. Co., Ltd. Address before: In high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 19, Xintian science and Technology Park Patentee before: Henan Suntront Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: SUNTRONT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HE'NAN SUNTRONT TECH. CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: In high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 19, Xintian science and Technology Park Patentee after: SUNTRONT TECHNOLOGY CO., LTD. Address before: In high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 19, Xintian science and Technology Park Patentee before: He'nan Suntront Tech. Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |