CN102155908A - Underwater penetration sensor in water quality detector - Google Patents
Underwater penetration sensor in water quality detector Download PDFInfo
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- CN102155908A CN102155908A CN2011100651136A CN201110065113A CN102155908A CN 102155908 A CN102155908 A CN 102155908A CN 2011100651136 A CN2011100651136 A CN 2011100651136A CN 201110065113 A CN201110065113 A CN 201110065113A CN 102155908 A CN102155908 A CN 102155908A
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Abstract
The invention discloses an underwater penetration sensor in a water quality detector. The underwater penetration sensor in the water quality detector is characterized in that the water quality detector is provided with a water level sensor and an underwater sensor; the electric block of the water quality detector is provided with a rope drum winding number sensor. When the water quality detector is used for detecting water quality, the water level sensor transmits signals after the detector arrives at the water level; the rope drum winding number sensor on the electric block starts to account the underground penetration, so that the water quality detector can detect a plurality of water quality indexes according to the appointed water depth accurately; when the detector arrives the water bottom, the underground sensor transmits a signal, and the electric block stops lowering the water quality detector. The underwater penetration sensor has the characteristics of high precision, good resolution, reliable working, simple operation, automatic control and the like; and the underwater penetration sensor is an advanced detection auxiliary apparatus.
Description
Technical field
The present invention relates to the opertaing device of water quality detecting device underwater penetration, is the underwater penetration sensor of water quality detecting device specifically.
Background technology
Water quality detection in the prior art adopts equipment such as bottle gouard moved by hands or electric block can only lift by crane the lifting water quality detecting device, can't controlledly water quality detecting device be hung in to specify the depth of water to carry out water quality detection.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of underwater penetration sensor of water quality detecting device is provided, arrive the water surface or water-bed position in the hope of accurately recording water quality detecting device, and the degree of depth of entry, so that the detection that water quality detecting device can be from the water surface to various water-quality guideline such as the water-bed water temperature that carry out the different depth of waters exactly, conductivity, transparencies.
Technical solution problem of the present invention adopts following technical scheme:
The design feature of underwater penetration sensor is in the water quality detecting device of the present invention: fixing electric block on suspension bracket, in the bulging side of cucurbit rope rope drum pitch of the laps is set and counts sensor, the hook of rope drum wire rope connects water quality detecting device, is respectively arranged with water level sensor and water-bed sensor on water quality detecting device.
The design feature of underwater penetration sensor also is in the water quality detecting device of the present invention:
Described rope drum pitch of the laps is counted being set to of sensor: the side setting at cucurbit rope drum is roused the rope drum end plate that rotates with the cucurbit rope, on rope drum end plate outer face, be positioned at the rope drum end plate same circumferential position on each revolution sensing magnet piece evenly is set, with the rope of described rope drum end plate opposite position drum reducer casing in a machine box is set, there are two revolution sensing Hall elements to be provided with at interval in the machine box, described two revolution sensing Hall elements and described revolution sensing magnet piece are on the same circumferential position, constitute electromagnetic induction device with described revolution sensing Hall element and revolution sensing magnet piece.
The S of described each revolution sensing magnet piece is extremely all towards machine box place one side, but the revolution sensing Hall element in the described machine box and the vertical range of the revolution sensing magnet piece on the described end plate are distance of reaction 2mm.
Described water level sensor is the conductivity sensor that is made of positive electrode device that is provided with in pairs in the water quality detecting device and negative electrode device, and described positive electrode device and negative electrode device be 30cm at interval.
Being set to of described water-bed sensor: two support branches that are arranged in the base of water quality detecting device are in the two ends of base, and the stand of a corresponding side is on the coaxial position on described two supports and the water quality detecting device; Described support is a cylinder, and the upper end of cylinder is threaded with stand, and the cylinder lower end is connected with a cap with internal thread; Near stand one bottom is arranged in the cylinder, between bottom and the seat cap plastic seal dividing plate is arranged, and seat cap, plastic seal dividing plate and bottom are parallel to each other; The center pit that one connecting rod runs through a cap is inserted in the support, is positioned on the connecting rod of support to be with extension spring, and the bottom that is in the connecting rod of base outer connects firmly a pressing plate; But the pressing plate drivening rod moves axially along stand; Water-bed sensing Hall element is set in the cavity that constitutes by plastic seal dividing plate and bottom, water-bed Hall element is positioned at the center of seal diaphragm, be provided with water-bed sensing magnet piece on the top of described connecting rod, the S utmost point of described water-bed sensing magnet piece is towards seal diaphragm.
The sensing of water quality detecting device sling height: in order to record the sling height of water quality detecting device, setting constitutes sensing unit by magnet piece and Hall element on electric block.When rope drum one week of rotation, magnet piece will switch magnetic field of Hall element, i.e. signal of Hall element output.The diameter D of rope drum is known, by the calculating of perimeter L formula (L=π D), and successively switches the order of two Hall elements by magnet piece, obtains to pull out or the physical length of the wire rope of withdrawing from the drum of restricting, thereby obtains the height of water quality detecting device lifting.Equidistant six magnet pieces that are provided with can effectively improve measuring accuracy on the end plate.
The sensing of water quality detecting device underwater penetration: utilize the conductivity sensor that is equipped with on the water quality sensor to constitute water level sensor, positive and negative electrode by two intervals of conductivity, different by air with the conductance of water, obtain the signal that water quality detecting device enters the water surface, and begin the underwater penetration of water quality detecting device in this.
Water quality detecting device arrives water-bed sensing: water-bed sensor is installed on the water quality detecting device base, when water quality passes the pick-up unit built on stilts, pressing plate is ejected by connecting rod by extension spring in the water-bed sensor support; After water quality passed the pick-up unit entry, the water pressure of pressing plate biside plate face equated that pressing plate still rests on the position of ejection; When water quality detecting device arrived the bottom, pressing plate was supporting the bottom, by the deadweight of water quality detecting device, the connecting rod synthlipsis was returned in the support.Because the top of connecting rod is mounted with magnet piece, is mounted with Hall element in the support seal diaphragm.Whenever the connecting rod synthlipsis is returned, magnet piece just switches the magnetic field of Hall element, has promptly obtained water quality detecting device and has arrived water-bed signal.Any one bottom of conflicting all can be sent and be arrived water-bed signal in two water-bed sensors, improves the fiduciary level of sensing with this.In addition, also can there be material such as mud different, obtains water quality detecting device and arrive water-bed signal by the bottom with the conductance of upper water.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The present invention can accurately record water quality detecting device and arrive the water surface or water-bed position, and the degree of depth of entry, so that water quality detecting device carries out the detection of multiple water-quality guideline such as water temperature, conductivity, transparency from the water surface to the water-bed different depth of waters, and having precision height, good resolution, reliable operation, easy and simple to handle, the characteristics that can control automatically etc., is the utility appliance of a kind of advanced person's water quality detection.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 A counts the sensor construction synoptic diagram for rope drum pitch of the laps of the present invention.
Fig. 2 B counts sensor rope drum end plate structural representation for rope drum pitch of the laps of the present invention.
Fig. 2 C is the right TV structure synoptic diagram of Figure 1A.
Fig. 3 A is water-bed sensor construction synoptic diagram among the present invention.
Fig. 3 B is the side-looking structural representation of Fig. 3 A.
Number in the figure: 1 suspension bracket, 2 electric blocks, 3 rope drums, 4 end plates, 5 wire rope, 6 water quality detecting devices, 7 rope drum pitch of the laps are counted sensor, 8 water level sensor, 9 water-bed sensors; 11 main shafts, 12 reducer casinges, 13 motors, 14 revolution sensing magnet pieces, 15 machine boxes, 16 revolution sensing Hall elements; 21 bases, 22 stands, 23 positive electrode devices, 24 negative electrode devices; 31 pressing plates, 32 connecting rods, 33 supports, 34 caps, 35 bottoms, 36 seal diaphragms, 37 extension springs, 38 water-bed sensing Hall elements, 39 water-bed sensing magnet pieces.
Embodiment
Referring to Fig. 1, fixing electric block 2 on suspension bracket 1 is provided with rope drum pitch of the laps in a side of cucurbit rope drum 3 and counts sensor 7, and the hook of rope drum wire rope 5 connects water quality detecting device 6, is respectively arranged with water level sensor 8 and water-bed sensor 9 on water quality detecting device 6.
Referring to Fig. 2 A, Fig. 2 B and Fig. 2 C, rope drum pitch of the laps is counted being set to of sensor 7: the rope drum end plate 4 that rotates with cucurbit rope drum 3 in a side setting of cucurbit rope drum 3, on rope drum end plate 4 outer faces, be positioned at the rope drum end plate 4 same circumferential position on each revolution sensing magnet piece 14 evenly is set, with the rope drum reducer casing 12 of rope drum end plate 4 opposite positions in a machine box 15 is set, there are two revolution sensing Hall elements 16 to be provided with at interval in the machine box 15, described two revolution sensing Hall elements 16 are on the same circumferential position with revolution sensing magnet piece 14, constitute electromagnetic induction device with revolution sensing Hall element 16 and revolution sensing magnet piece 14; The S of each revolution sensing magnet piece 14 is extremely all towards machine box 15 places one side, but the vertical range of revolution sensing Hall element 16 in the machine box 15 and the revolution sensing magnet piece 14 on the end plate 4 is distance of reaction 2mm, and the material of machine box 15 is engineering plastics.
Referring to Fig. 3 A and Fig. 3 B, water level sensor 8 is the conductivity sensors that are made of positive electrode device 23 that is provided with in pairs in the water quality detecting device 6 and negative electrode device 24, positive electrode device 23 and negative electrode device 24 interval 30cm.
Being set to of water-bed sensor 9: two supports that are arranged in the base 21 of water quality detecting device 6 were in the two ends of base 21 in 33 minutes, and the stand 22 of a corresponding side is on the coaxial position on two supports 33 and the water quality detecting device 6; Support 33 is a cylinder, and the upper end of cylinder is threaded with stand 22, and the cylinder lower end is connected with a cap 34 with internal thread; Near stand 22 bottom 35 is arranged in the cylinder, between bottom (35) and the seat cap 34 a plastic seal dividing plate 36 is arranged, and seat cap 34, plastic seal dividing plate 36 and bottom 35 are parallel to each other; The center pit that one connecting rod 32 runs through a cap 34 is inserted in the support 33, is positioned on the connecting rod 32 of support 33 to be with extension spring 37, and the bottom that is in the connecting rod 32 of support 33 outsides connects firmly a pressing plate 31; But pressing plate 31 drivening rods 32 moving axially along stand 22; Water-bed sensing Hall element 38 is set in the cavity that constitutes by plastic seal dividing plate 36 and bottom 35, water-bed Hall element 38 is positioned at the center of seal diaphragm 36, be provided with water-bed sensing magnet piece 39 on the top of connecting rod 32, the S utmost point of water-bed sensing magnet piece 39 is towards seal diaphragm 36; When advancing pressing plate 31,39 of water-bed sensing magnet pieces and seal diaphragm 36 are at a distance of 2mm; When decontroling pressing plate 31,36 of 39 of water-bed sensing magnet pieces and seal diaphragms are at a distance of 10mm.
In concrete the enforcement, water quality detecting device 6 is the pick-up units that are used to detect water-quality guideline such as transparency, water temperature, is configured by the requirement of water quality detection; Rope drum pitch of the laps is counted the degree of depth that sensor 7 is used to measure water quality detecting device 6 entry; Water level sensor 8 is the signals when being used for sensing water quality detecting device 6 and entering the water surface; Water-bed sensor 9 is the signals when being used for the sensing water quality detecting device 6 arrival bottoms; Main shaft 11 is the transmission shaft of rope drum 3; Reducer casing 12 is the velocities of rotation that are used to control rope drum 3; The driving force of rope drum 3 rotations is provided with motor 13; Revolution sensing magnet piece 14 is to be used to restrict the sensing sources that drum 3 pitch of the laps count electric signal; Revolution sensing Hall element 16 be used to receive and and the pitch of the laps of output rope drum 3 count transducing signal; Stand shown in the figure 22 is used for fixing water quality detection sensor, and is connected with base 21 with crossbeam; Positive electrode device 23 is to be used to detect the lake water conductance, and as the sensing sources of water level sensor 8; Negative electrode device 24 is to be used to detect the lake water conductance, and as the sensing sources of water level sensor 8; Pressing plate 31 is to be used for sensing water quality detecting device 6 to arrive water-bed; Seal diaphragm 36 is used for the location and the sealing of water-bed sensing Hall element 38; Extension spring 37 is used to make pressing plate 31 to reset.
Claims (5)
1. underwater penetration sensor in the water quality detecting device, it is characterized in that: go up fixedly electric block (2) at suspension bracket (1), in a side of cucurbit rope drum (3) rope drum pitch of the laps is set and counts sensor (7), the hook of rope drum wire rope (5) connects water quality detecting device (6), is respectively arranged with water level sensor (8) and water-bed sensor (9) on water quality detecting device (6).
2. underwater penetration sensor in the water quality detecting device according to claim 1, it is characterized in that described rope rouses pitch of the laps and counts being set to of sensor (7): the side setting at cucurbit rope drum (3) is roused the rope drum end plate (4) of (3) rotation with the cucurbit rope, on rope drum end plate (4) outer face, be positioned at the rope drum end plate (4) same circumferential position on each revolution sensing magnet piece (14) evenly is set, with the rope of described rope drum end plate (4) opposite position drum reducer casing (12) in a machine box (15) is set, there are two revolution sensing Hall elements (16) to be provided with at interval in the machine box (15), described two revolution sensing Hall elements (16) are on the same circumferential position with described revolution sensing magnet piece (14), constitute electromagnetic induction device with described revolution sensing Hall element (16) and revolution sensing magnet piece (14).
3. underwater penetration sensor in the water quality detecting device according to claim 2, the S that it is characterized in that described each revolution sensing magnet piece (14) is extremely all towards machine box (15) place one side, the revolution sensing magnet piece (14) on the revolution sensing Hall element (16) in the described machine box (15) and the described end plate (4) but vertical range be distance of reaction 2mm.
4. underwater penetration sensor in the water quality detecting device according to claim 1, it is characterized in that: described water level sensor (8) is the conductivity sensor that is made of positive electrode device (23) that is provided with in pairs in the water quality detecting device (6) and negative electrode device (24), described positive electrode device (23) and negative electrode device (24) interval 30cm.
5. underwater penetration sensor in the water quality detecting device according to claim 1, it is characterized in that: being set to of described water-bed sensor (9): two supports (33) that are arranged in the base (21) of water quality detecting device (6) divide the two ends that are in base (21), and the stand (22) of a corresponding side is on the coaxial position on described two supports (33) and the water quality detecting device (6); Described support (33) is a cylinder, and the upper end of cylinder is threaded with stand (22), and the cylinder lower end is connected with a cap (34) with internal thread; Near stand (22) bottom (35) is arranged in the cylinder, between bottom (35) and the seat cap (34) a plastic seal dividing plate (36) is arranged, and seat cap (34), plastic seal dividing plate (36) and bottom (35) are parallel to each other; The center pit that one connecting rod (32) runs through a cap (34) is inserted in the support (33), is positioned on the connecting rod (32) of support (33) to be with extension spring (37), and the bottom that is in the outside connecting rod (32) of support (33) connects firmly a pressing plate (31); Pressing plate (31) but drivening rod (32) moving axially along stand (22); In the cavity that constitutes by plastic seal dividing plate (36) and bottom (35), water-bed sensing Hall element (38) is set, water-bed Hall element (38) is positioned at the center of seal diaphragm (36), be provided with water-bed sensing magnet piece (39) on the top of described connecting rod (32), the S utmost point of described water-bed sensing magnet piece (39) is towards seal diaphragm (36).
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Cited By (8)
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---|---|---|---|---|
CN104880145A (en) * | 2015-06-26 | 2015-09-02 | 长江重庆航道工程局 | Dredger grab bucket monitoring system |
CN105547140A (en) * | 2015-12-11 | 2016-05-04 | 重庆地质仪器厂 | Detector for embedded depth |
CN106770065A (en) * | 2017-01-12 | 2017-05-31 | 薛永富 | A kind of liquid transparency device |
CN107907187A (en) * | 2017-10-31 | 2018-04-13 | 中国科学院武汉岩土力学研究所 | The measuring method and device of the gas-liquid interface depth of salt hole air reserved storeroom |
CN110132375A (en) * | 2019-04-19 | 2019-08-16 | 山东科技大学 | The mechanical arm of open channel mud position under a kind of measurement mine |
CN111397520A (en) * | 2020-04-23 | 2020-07-10 | 徐州宏远通信科技有限公司 | Method and device for detecting thickness of sedimentation layer of rake type concentration tank based on image recognition |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1335188A2 (en) * | 2002-01-16 | 2003-08-13 | Ctex Seat Comfort Ltd | Component position indicating apparatus |
CN101408424A (en) * | 2008-08-18 | 2009-04-15 | 上海第二工业大学 | Water depth flow speed temperature vertical continuous measuring system |
US20090322001A1 (en) * | 2008-06-30 | 2009-12-31 | Intuitive Surgical, Inc. | Spring Counterbalance with Failure Detection |
CN101963580A (en) * | 2010-09-25 | 2011-02-02 | 合肥工业大学 | Sensing device for detecting water quality transparency of lake and detection method |
CN202048957U (en) * | 2011-03-17 | 2011-11-23 | 合肥工业大学 | Underwater-depth sensor used for water quality detection apparatus |
-
2011
- 2011-03-17 CN CN2011100651136A patent/CN102155908B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1335188A2 (en) * | 2002-01-16 | 2003-08-13 | Ctex Seat Comfort Ltd | Component position indicating apparatus |
US20090322001A1 (en) * | 2008-06-30 | 2009-12-31 | Intuitive Surgical, Inc. | Spring Counterbalance with Failure Detection |
CN101408424A (en) * | 2008-08-18 | 2009-04-15 | 上海第二工业大学 | Water depth flow speed temperature vertical continuous measuring system |
CN101963580A (en) * | 2010-09-25 | 2011-02-02 | 合肥工业大学 | Sensing device for detecting water quality transparency of lake and detection method |
CN202048957U (en) * | 2011-03-17 | 2011-11-23 | 合肥工业大学 | Underwater-depth sensor used for water quality detection apparatus |
Cited By (11)
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CN104880145A (en) * | 2015-06-26 | 2015-09-02 | 长江重庆航道工程局 | Dredger grab bucket monitoring system |
CN104880145B (en) * | 2015-06-26 | 2018-04-27 | 长江重庆航道工程局 | A kind of dredger grab bucket monitoring system |
CN105547140A (en) * | 2015-12-11 | 2016-05-04 | 重庆地质仪器厂 | Detector for embedded depth |
CN106770065A (en) * | 2017-01-12 | 2017-05-31 | 薛永富 | A kind of liquid transparency device |
CN107907187A (en) * | 2017-10-31 | 2018-04-13 | 中国科学院武汉岩土力学研究所 | The measuring method and device of the gas-liquid interface depth of salt hole air reserved storeroom |
CN110132375A (en) * | 2019-04-19 | 2019-08-16 | 山东科技大学 | The mechanical arm of open channel mud position under a kind of measurement mine |
CN111397520A (en) * | 2020-04-23 | 2020-07-10 | 徐州宏远通信科技有限公司 | Method and device for detecting thickness of sedimentation layer of rake type concentration tank based on image recognition |
CN111927429A (en) * | 2020-07-29 | 2020-11-13 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
CN111927429B (en) * | 2020-07-29 | 2022-02-11 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
CN113884648A (en) * | 2021-10-12 | 2022-01-04 | 山东德普检测技术有限公司 | Underground water detection system and detection method |
CN113884648B (en) * | 2021-10-12 | 2024-07-19 | 中科南京未来能源系统研究院 | Underground water body detection system and detection method |
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