CN203534648U - Jet flow gas meter with pulse output - Google Patents
Jet flow gas meter with pulse output Download PDFInfo
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- CN203534648U CN203534648U CN201320652432.1U CN201320652432U CN203534648U CN 203534648 U CN203534648 U CN 203534648U CN 201320652432 U CN201320652432 U CN 201320652432U CN 203534648 U CN203534648 U CN 203534648U
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- module
- pulse output
- gas meter
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- seat
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Abstract
The utility model relates to a jet flow gas meter with pulse output. An existing jet flow gas meter is not high in accuracy. An audio sheet and a buzzing chamber are fixedly arranged in a cavity composed of an upper base cover and a base, a cavity body is formed in the buzzing chamber, a piezoelectric buzzing sheet is arranged in the cavity body, and the piezoelectric buzzing sheet is communicated with a frequency signal processing module through a binding post; the frequency signal processing module, a liquid crystal display module, a temperature collecting module, an RS485 communication module, a voltage detecting module, a reset module and a pulse output module are communicated with a microprocessor. According to the jet flow gas meter with pulse output, the pulse output module is additionally arranged on the basis of an existing gas meter with the temperature compensation audio frequency, a signal with the pulse width of 100ms is output every 10L through an opto-coupler, and butt-joint of an intelligent module is convenient.
Description
Technical field
The utility model belongs to field of measuring techniques, relates to a kind of gas meter, flow meter, specifically a kind of tape pulse output fluidic gas meter.
Background technology
Gas meter, flow meter is a kind of metering device for metering gas use amount.Existing gas meter, flow meter is mostly by mechanical counter part, to carry out the metering of combustion gas, after having grown service time, may precision can decline.Also have some to adopt ultrasonic element to carry out combustion gas counting, i.e. ultrasonic wave gas meter, but this gas meter, flow meter needs mounting ultrasonic sensor, and cost is higher.Application number is that 201120115537.4 utility model discloses a kind of audio gas meter (being also fluidic gas meter), and this table volume is little, lightweight, with low cost, easy for installation.But because gas meter, flow meter internal environment is complicated, its measuring accuracy need further raising.
Summary of the invention
The purpose of this utility model be to provide a kind of cost lower, measure accurate fluidic gas meter.
The utility model comprises the seat of honour and base, and the seat of honour covers on base, and the lower end of base connects blast tube; Audio frequency sheet and buzzing chamber are fixedly installed in the cavity of seat of honour cover and base formation, the blow vent setting of the corresponding base of its sound intermediate frequency sheet, and buzzing chamber is arranged on audio frequency sheet top; Buzzing is established cavity in chamber, and piezoelectricity singing piece is arranged in this cavity; Jacket, outside the seat of honour, and is fixedly connected with base; Frequency signal processing module is arranged on the space between the seat of honour and shell; Binding post fixedly runs through the housing setting at the seat of honour, and piezoelectricity singing piece is communicated with one end of binding post, and the other end of binding post is communicated with frequency signal processing module; Frequency signal processing module comprises signal amplification circuit, signal filter circuit and signal transformation circuit.
In shell, be provided with microprocessor, LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module, frequency signal processing module and LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module are communicated with microprocessor.
Described temperature collect module adopts digital temperature sensor DS18B20 or TMP102; Described pulse output module adopts optocoupler output pulse signal.
The utility model increases pulse output module on the existing basis with temperature compensation audio gas meter, every 0.01m
3(10L) through the signal of a pulse width 100ms of optocoupler output, facilitate the docking of intelligent object.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is the installation site schematic diagram of the seat of honour, base and blast tube in Fig. 1;
Fig. 3 is structured flowchart of the present utility model.
Embodiment
As illustrated in fig. 1 and 2, a kind of tape pulse output fluidic gas meter comprises the seat of honour 1 and base 2, and the seat of honour 1 covers on base 2, and base 2 lower ends connect blast tube 3; Audio frequency sheet 4 and buzzing chamber 5 are fixedly installed in the cavity of the seat of honour 1 cover and base 2 formations, the blow vent setting of the corresponding base 2 of its sound intermediate frequency sheet 4, and buzzing chamber 5 is arranged on audio frequency sheet 4 tops; In buzzing chamber 5, establish cavity, piezoelectricity singing piece 6 is arranged in this cavity; Shell 7 covers on outside the seat of honour 1, and is fixedly connected with base 2; Frequency signal processing module 8 is arranged on the space between the seat of honour 1 and shell 7; Binding post 9 fixedly runs through the housing setting at the seat of honour 1, and piezoelectricity singing piece 6 is communicated with one end of binding post 9, and the other end of binding post 9 is communicated with frequency signal processing module 8; Frequency signal processing module 8 comprises signal amplification circuit, signal filter circuit and signal transformation circuit; The current signal of piezoelectricity singing piece output is fainter, must amplify and filtering interference signals through signal amplification circuit, then be shaped to regular square-wave pulse signal for microprocessor analysis, the frequency of square-wave pulse signal is identical with the frequency of audio frequency vibration, thereby also forms linear relationship with gas flow.
As shown in Figure 3, in shell 7, be provided with microprocessor, LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module, frequency signal processing module and LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module are communicated with microprocessor.Temperature collect module adopts digital temperature sensor DS18B20 or TMP102.
The Function and operation of each functional module above: RS485 communication completes the information interaction of audio frequency table and meter calibrating platform; The fuel gas temperature that microprocessor records according to temperature collect module compensates combustion gas data; The supply voltage that microprocessor detected when voltage detection module is just reported to the police during lower than operating voltage; When the fault in program appears in gas meter, flow meter, pressing reseting module resets to microprocessor.
This fluidic gas meter utilizes multi-disc audio frequency sheet to be stacked and forms specific airstream compartment, when air-flow passes through, can in physical construction, form audio frequency vibration, the size of vibration frequency is linear with the gas flow that flows through audio frequency sheet, audio frequency vibration produces electric signal by buzzing sheet, through binding post, pass to and on master control borad, carry out signal processing, piezoelectricity singing piece itself is piezoelectric ceramic body, in the effect that is subject to external force, can there is deformation, its inner meeting produces polarization phenomena, occurs positive and negative contrary electric charge on its two apparent surfaces simultaneously.After external force is removed, it can return to uncharged state again, therefore audio frequency vibration can cause the variation of buzzing sheet two polygonal voltages, the change frequency of voltage is identical with the frequency of audio frequency vibration, so just audio frequency vibration signal is converted to the electric impulse signal that processing module can be identified, electric impulse signal is input in microprocessor and processes the metrical information that obtains combustion gas.
On master control circuit plate, pulse output module is set, adopts the pulse signal of optocoupler output certain width, the every 0.01m of microprocessor
3(10L) time, just trigger pulsatile once output, pulsewidth is 100ms, facilitates various intelligent object accesses.
Claims (3)
1. a tape pulse is exported fluidic gas meter, comprise the seat of honour and base, the seat of honour covers on base, the lower end of base connects blast tube, it is characterized in that: audio frequency sheet and buzzing chamber are fixedly installed in the cavity of seat of honour cover and base formation, the blow vent setting of the corresponding base of its sound intermediate frequency sheet, buzzing chamber is arranged on audio frequency sheet top; Buzzing is established cavity in chamber, and piezoelectricity singing piece is arranged in this cavity; Jacket, outside the seat of honour, and is fixedly connected with base; Frequency signal processing module is arranged on the space between the seat of honour and shell; Binding post fixedly runs through the housing setting at the seat of honour, and piezoelectricity singing piece is communicated with one end of binding post, and the other end of binding post is communicated with frequency signal processing module;
In shell, be provided with microprocessor, LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module, frequency signal processing module and LCD MODULE, temperature collect module, RS485 communication module, voltage detection module, reseting module, pulse output module are communicated with microprocessor.
2. a kind of tape pulse output fluidic gas meter as claimed in claim 1, is characterized in that: described frequency signal processing module comprises signal amplification circuit, signal filter circuit and signal transformation circuit.
3. a kind of tape pulse output fluidic gas meter as claimed in claim 1, is characterized in that: described temperature collect module adopts digital temperature sensor DS18B20 or TMP102; Described pulse output module adopts optocoupler output pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652432.1U CN203534648U (en) | 2013-10-21 | 2013-10-21 | Jet flow gas meter with pulse output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652432.1U CN203534648U (en) | 2013-10-21 | 2013-10-21 | Jet flow gas meter with pulse output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534648U true CN203534648U (en) | 2014-04-09 |
Family
ID=50420843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320652432.1U Expired - Fee Related CN203534648U (en) | 2013-10-21 | 2013-10-21 | Jet flow gas meter with pulse output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606170A (en) * | 2015-12-31 | 2016-05-25 | 浙江威星智能仪表股份有限公司 | Ultrasonic gas metering device with self-learning template and metering method of device |
-
2013
- 2013-10-21 CN CN201320652432.1U patent/CN203534648U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606170A (en) * | 2015-12-31 | 2016-05-25 | 浙江威星智能仪表股份有限公司 | Ultrasonic gas metering device with self-learning template and metering method of device |
| CN105606170B (en) * | 2015-12-31 | 2019-02-12 | 浙江威星智能仪表股份有限公司 | A kind of ultrasonic gas metering device and method with self study template |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |