CN202304946U - Sewer liquid level sensor - Google Patents
Sewer liquid level sensor Download PDFInfo
- Publication number
- CN202304946U CN202304946U CN2011204309092U CN201120430909U CN202304946U CN 202304946 U CN202304946 U CN 202304946U CN 2011204309092 U CN2011204309092 U CN 2011204309092U CN 201120430909 U CN201120430909 U CN 201120430909U CN 202304946 U CN202304946 U CN 202304946U
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- liquid level
- level sensor
- capacitive sensing
- sewer
- sewer liquid
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Abstract
The utility model discloses a sewer liquid level sensor which comprises a resistor-capacitor module, an electrical level conversion module, a signal conversion device, a protection device and a detection device, wherein the protection device is arranged at the periphery of the detection device; the protection device and the detection device are installed on a support; the detection device is sequentially connected with the resistor-capacitor module, the electrical level conversion module, the signal conversion device and a transmission module through a lead; the transmission module is connected with a control terminal in a communication mode; and the protection device comprises a fluid shade plate which is angle iron, or band iron or a rigid net-shaped object. The sewer liquid level sensor provided by the utility model has the beneficial effects that the sewer liquid level sensor is convenient to install, is simple to maintain, and is suitable for various pipelines; the sewer liquid level sensor is low in power consumption, and is suitable for the installation of various occasions; the sewer liquid level sensor has communication interfaces with various standards, and is convenient for butt joint and group net monitoring with other devices; and through the arranged alarm, the safety, stability and reliability of operation of the system are ensured.
Description
Technical field
The utility model relates to a kind of liquid level sensor, relates in particular to a kind of sewer liquid level sensor.
Background technology
For a long time; The monitoring of China's city planting ductwork sewer liquid level is a difficult problem always; All the time do not find a suitable manner method, discharging progressively changes " overall control " into " concentration control " to water pollutant along with China. and the level gauging technology to existing city and factory's sewer floss hole has also received attention day by day.
Because the chemical substance of sewage, biological substance, the active sludge of carrying secretly after perhaps handling through sewage treatment plant etc. can have a strong impact on the normal operation that is similar to equipment such as electromagnetic flowmeter; Also contain a large amount of impurity, floating thing etc. in the sewage, conductivity etc. are wayward, and electrode terminal is very short normal working hours, all contact measurement methods all within a certain period of time degree of accuracy seriously drift about, cause metering inaccurate, even equipment out of use.Therefore, the type selecting of sensor is very important.
The measurement of liquid level now mainly contains following several method: they mainly show as weak point in force:
1, magnetic float liquid level gauge, this liquid level gauge directly contacts with medium, and it is strict that the ball float seal request is wanted, not the energy measurement resisting medium.
2, magnetic turnover panel (post) formula liquid level gauge, this liquid level gauge turnover panel is stuck easily, and causing can't the teletransmission indication.Magnetic material is prone to cause the liquid level gauge cisco unity malfunction as demagnetizing.
3, guided wave radar liquid level gauge, this liquid level gauge costs an arm and a leg.The parameter that instrument need be provided with is more, in case go wrong, being difficult to usually find is that what reason causes.If being stained with medium accidentally, antenna itself can report an error.Can report an error if any the icing phenomenon of crystallization, need heat tracing to handle, and the cleaning antenna.
4, ultrasonic level gage, this liquid level gauge ratio of precision is lower, and test has the blind area easily.Cannot gaging pressure container, not energy measurement effumability medium.
5, capacitance level gauge, the specific inductive capacity instability of this liquid level gauge meeting fluid to be measured can cause error.Capacitance level gauge generally is used for regulating reservoir, clear water reserviors are measured.Static pressure (differential pressure) formula liquid level gauge, this liquid level gauge receives Media density and temperature effect very big, so usually ratio of precision is relatively poor, and is to eliminate these influences, and it is very high to need a lot of other test instrumentations, result to build the perfect static pressure measurement system price of a cover.PTH series adopts diffuse si pressure drag core body or ceramic pressure drag core body, receives the influence of extraneous factor easily, can't use for a long time.
The utility model content
The purpose of the utility model is exactly in order to address the above problem, and a kind of sewer liquid level sensor is provided, and it has stepping sensed water level in the water quality environment of complicacy; Gear number and accuracy of detection are easy to adjust; Simple during installation, need not calibrate corrosion resistant antiwear.Be adapted at the advantage of multiple applications such as sewer stormwater, blow-off line.
To achieve these goals, the utility model adopts following technical scheme:
A kind of sewer liquid level sensor; Comprise capacitance-resistance module, level switch module, chromacoder, it also is provided with protective device; Pick-up unit, said protective device is arranged on the periphery of said pick-up unit, and said protective device and said pick-up unit are rack-mount; Said pick-up unit is connected with capacitance-resistance module, level switch module, chromacoder, sending module through lead in order, and said sending module is communicated by letter with control terminal and is connected.
Described protective device comprises aft cover plate, and said aft cover plate is angle bar or band iron or stiff mesh.
Said pick-up unit comprises the macromolecule insulation crust; Said macromolecule insulation crust lower ending opening; Said macromolecule is epoxy resin or ABS engineering plastics; The upper end is provided with capacitive sensing sheet metal binding post; Said capacitive sensing sheet metal binding post is connected with support, in the macromolecule insulation crust, is provided with capacitive sensing negative pole sheet metal and capacitive sensing cathode metal plate that at least one pair of is placed relatively from lower to upper successively, and described capacitive sensing negative pole sheet metal is connected with the capacitance-resistance module through the capacitive sensing sheet metal binding post of macromolecule insulation crust upper end respectively with capacitive sensing cathode metal plate.
Said capacitive sensing negative pole sheet metal and capacitive sensing cathode metal distance between plates are adjustable.
Said support comprises fixed support, and fixed support one end is connected with aft cover plate, also comprises pressing plate, and said pressing plate is connected with fixed support through stainless steel bolt.The macromolecule insulation crust of pick-up unit is clipped in the middle of pressing plate and the fixed support, is provided with the expansion bolt mounting hole at the said fixed support other end.
Said fixed support is a zig-zag type.
Said control terminal comprises single-chip microcomputer, also comprises power supply and alarm.
Said power supply is civil power or accumulator or dry cell or solar cell or aerogenerator or wind-electricity complementary device.
Said sending module is wired mode or wireless mode.Adopt switching value signal or 485 signals or 232 signals or 4-20ma current signal or 0-5v simulating signal in said wired mode.
The wireless mode of said sending module adopts CDMA or EDGE or Wifi.
The principle of work of the utility model is; The macromolecule insulation crust is positioned at protective device with the test section that the capacitive sensing negative pole sheet metal that is positioned at insulation crust, capacitive sensing cathode metal plate are formed; The test section obtains the capacitance of current level value according to the corresponding relation of capacitance and liquid level; This value is delivered to the sine wave that the capacitance-resistance module is transformed into standard; This standard is surveyed the sinusoidal wave square wave that is transformed into standard through level switch module; The square wave of mark is transformed into general signals of communication such as general switching value signal, 485 signals, 232-signal, 4-20ma current signal, 0-5v simulating signal through chromacoder, sending module sends to control terminal with the signal of communication of this standard, just can obtain recording liquid level from control terminal; Or adopt wireless mode to utilize CDMA or EDGE or Wifi network to send to control terminal, realize obtaining of liquid level.
The beneficial effect of the utility model:
1, totally enclosed type design, liquid to be checked does not directly contact with detecting sheet metal, has guaranteed the serviceable life of sheet metal.Even if non-contact measurement also can permanently effectively use under rugged surroundings.
2, special protection design guarantees the destruction that detector tube does not receive external impurities, guarantees under the situation of liquid flow, also can permanently effectively to use.
3, main control part adopts Single-chip Controlling, can realize intelligent control, makes things convenient for the adjustment of accuracy of detection.
4, can be according to the spacing of customer requirements adjustment shelves number and each grade, applicable to different pipelines.
5, the inner intelligent filter algorithm that adopts, multiple signal output does not receive water quality impact, need not calibration.
6, easy for installation, safeguard simply to be fit to various pipelines.
7, low in energy consumption, civil power or accumulator or dry cell or solar cell or aerogenerator or wind-electricity complementary device.Be applicable to the installation of various occasions.
8, have various standard communication, conveniently monitor with docking of other equipment with networking.
9, the alarm through being provided with can be realized the sensor fault warning, and water level is crossed low too high warning etc., guarantees the reliable and stable operation of security of system.
Description of drawings
Fig. 1 is a structural representation;
Fig. 2 forms synoptic diagram for protective device;
Each module annexation synoptic diagram of Fig. 3.
Wherein, 1, aft cover plate, 2, the macromolecule insulation crust, 3, capacitive sensing negative pole sheet metal; 4, capacitive sensing cathode metal plate, 5, the capacitance-resistance module, 6, level switch module, 7, signal conversion module; 8, sending module, 9, capacitive sensing sheet metal binding post, 10, fixed support; 11, pressing plate, 12, stainless steel bolt, 13, setscrew.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Shown in the figure one; Aft cover plate 1 is used for the impact of block water impurity to macromolecule insulation crust 2, thus protection capacitive sensing sheet metal, and insulation crust adopts macromolecular material; Anticorrosive ageing-resistant; Guarantee durable in usely, the macromolecular material protective treatment is adopted on capacitive sensing device sheet metal top layer, and said macromolecular material adopts epoxy resin.The capacitive sensing sheet metal be can guarantee and media isolated, the influence of not examined medium and external environment detected.Capacitive sensing negative pole sheet metal 3 and the variation of capacitive sensing cathode metal plate 4 with liquid level to be detected, capacitance each other also changes thereupon.Thus liquid level signal is transformed into capacitance signal.Distance between the capacitive sensing sheet metal can be regulated according to field condition, and every pole plate connection capacitance-resistance independently of one another module 5, and measuring accuracy is higher.The capacitance signal that capacitance-resistance module 5 is sensed capacitive sensing negative pole sheet metal 3 and capacitive sensing cathode metal plate 4 is transformed into the sine wave of rule.The sine wave that capacitance-resistance module 5 will produce through level switch module 6 before is transformed into the square wave of standard.The inner intelligent filter algorithms that adopt of signal conversion module 7, the signal of standards such as the switching value signal that the square wave of the standard that level switch module 6 is produced is transformed into, 485 signals, 232 signals, 4-20ma current signal, 0-5v simulating signal.
Sending module 8 sends the signal that signal conversion module 7 produces.
Protective device shown in the figure two is formed synoptic diagram and is mainly comprised:
A kind of sewer liquid level sensor; Comprise capacitance-resistance module, level switch module, chromacoder, it also is provided with protective device; Pick-up unit, said protective device is arranged on the periphery of said pick-up unit, and said protective device and said pick-up unit are rack-mount; Said pick-up unit is connected with capacitance-resistance module 5, level switch module 6, chromacoder 7, sending module 8 through lead in order, and said sending module 8 is communicated by letter with control terminal and is connected.Described protective device comprises aft cover plate 1, and said aft cover plate 1 is angle bar or band iron or stiff mesh.
Said pick-up unit comprises macromolecule insulation crust 2; Said macromolecule insulation crust 2 lower ending openings; The upper end is provided with capacitive sensing sheet metal binding post; Said capacitive sensing sheet metal binding post 9 is connected with support; In macromolecule insulation crust 2, be provided with at least one pair of the capacitive sensing negative pole sheet metal placed relatively 3 and capacitive sensing cathode metal plate 4 from lower to upper successively, described capacitive sensing negative pole sheet metal 3 is connected with capacitance-resistance module 5 through the capacitive sensing sheet metal binding post 9 of macromolecule insulation crust 2 upper ends respectively with capacitive sensing cathode metal plate 4.
Said capacitive sensing negative pole sheet metal 3 is adjustable with capacitive sensing cathode metal plate 4 spacings.
Said support comprises fixed support 10, and fixed support 10 1 ends are connected with aft cover plate 1, also comprise pressing plate 11, and said pressing plate 11 is connected with fixed support 10 through stainless steel bolt 12.It is middle with fixed support 10 that the macromolecule insulation crust 2 of pick-up unit is clipped in pressing plate 11, is provided with expansion bolt 13 mounting holes at said fixed support 10 other ends.
Said fixed support 10 is a zig-zag type.
Said control terminal comprises computing machine or embedded scm, also comprises power supply and alarm.
Said power supply is civil power or accumulator or dry cell or solar cell or aerogenerator or wind-electricity complementary device.
Said sending module 8 is wired mode or wireless mode.Adopt switching value signal or 485 signals or 232-signal or 4-20ma current signal or 0-5v simulating signal in said wired mode.
The wireless mode of said sending module 8 adopts CDMA or EDGE or Wifi.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (10)
1. sewer liquid level sensor; Comprise capacitance-resistance module, level switch module, chromacoder, it is characterized in that it also is provided with protective device, pick-up unit; Said protective device is arranged on the periphery of said pick-up unit; Said protective device and said pick-up unit are rack-mount, and said pick-up unit is connected with capacitance-resistance module, level switch module, chromacoder, sending module through lead in order, and said sending module is communicated by letter with control terminal and is connected.
2. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that described protective device comprises aft cover plate, and said aft cover plate is angle bar or band iron or stiff mesh.
3. a kind of sewer liquid level sensor as claimed in claim 1; It is characterized in that; Said pick-up unit comprises the macromolecule insulation crust; Said macromolecule is epoxy resin or ABS engineering plastics; Said macromolecule insulation crust lower ending opening, the upper end is provided with capacitive sensing sheet metal binding post, and said capacitive sensing sheet metal binding post is connected with support; In the macromolecule insulation crust, be provided with capacitive sensing negative pole sheet metal and capacitive sensing cathode metal plate that at least one pair of is placed relatively from lower to upper successively, described capacitive sensing negative pole sheet metal is connected with the capacitance-resistance module through the capacitive sensing sheet metal binding post of macromolecule insulation crust upper end respectively with capacitive sensing cathode metal plate.
4. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that said capacitive sensing negative pole sheet metal and capacitive sensing cathode metal distance between plates are adjustable.
5. like claim 1 or 3 described a kind of sewer liquid level sensors; It is characterized in that said support comprises fixed support, fixed support one end is connected with aft cover plate; Also comprise pressing plate; Said pressing plate is connected with fixed support through stainless steel bolt, and the macromolecule insulation crust of pick-up unit is clipped in the middle of pressing plate and the fixed support, is provided with the expansion bolt mounting hole at the said fixed support other end.
6. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that said fixed support is a zig-zag type.
7. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that said control terminal comprises single-chip microcomputer, also comprises power supply and alarm.
8. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that, said power supply is civil power or accumulator or dry cell or solar cell or aerogenerator or wind-electricity complementary device.
9. a kind of sewer liquid level sensor as claimed in claim 1; It is characterized in that; Said sending module is wired mode or wireless mode, adopts switching value signal or 485 signals or 232 signals or 4-20ma current signal or 0-5v simulating signal in said wired mode.
10. a kind of sewer liquid level sensor as claimed in claim 1 is characterized in that, the wireless mode of said sending module adopts CDMA or EDGE or Wifi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204309092U CN202304946U (en) | 2011-11-03 | 2011-11-03 | Sewer liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204309092U CN202304946U (en) | 2011-11-03 | 2011-11-03 | Sewer liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304946U true CN202304946U (en) | 2012-07-04 |
Family
ID=46373823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204309092U Expired - Fee Related CN202304946U (en) | 2011-11-03 | 2011-11-03 | Sewer liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304946U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968915A (en) * | 2014-05-28 | 2014-08-06 | 佛山市海天(高明)调味食品有限公司 | Movable type acousto-optic liquid-level alarm |
| CN104538693A (en) * | 2014-12-06 | 2015-04-22 | 苏州欣航微电子有限公司 | Capacitance monitoring type storage battery |
| CN108375071A (en) * | 2018-04-19 | 2018-08-07 | 南京中船绿洲环保有限公司 | A kind of incineration system and incinerating method of Sewage from Ships sludge |
-
2011
- 2011-11-03 CN CN2011204309092U patent/CN202304946U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968915A (en) * | 2014-05-28 | 2014-08-06 | 佛山市海天(高明)调味食品有限公司 | Movable type acousto-optic liquid-level alarm |
| CN104538693A (en) * | 2014-12-06 | 2015-04-22 | 苏州欣航微电子有限公司 | Capacitance monitoring type storage battery |
| CN108375071A (en) * | 2018-04-19 | 2018-08-07 | 南京中船绿洲环保有限公司 | A kind of incineration system and incinerating method of Sewage from Ships sludge |
| CN108375071B (en) * | 2018-04-19 | 2024-03-29 | 南京中船绿洲环保有限公司 | Incineration system and incineration method for ship domestic sewage sludge |
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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: 20120704 Termination date: 20171103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |