CN100554900C - The suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water - Google Patents
The suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water Download PDFInfo
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- CN100554900C CN100554900C CNB2007100723937A CN200710072393A CN100554900C CN 100554900 C CN100554900 C CN 100554900C CN B2007100723937 A CNB2007100723937 A CN B2007100723937A CN 200710072393 A CN200710072393 A CN 200710072393A CN 100554900 C CN100554900 C CN 100554900C
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Abstract
The present invention is to provide a kind of suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water.It comprises the soft of quartz heat sensitive resonance instrument 3 and single-chip microcomputer, hardware circuit 10, quartz heat sensitive resonance instrument 3 and single-chip microcomputer soft, hardware circuit 10 links to each other by internal lead 5 and is installed in the talmi gold blind pipe 2, the talmi gold blind pipe is outside equipped with water-fast resin-sealed tube 17, the front end of water-fast resin-sealed tube 17 be equipped with cover on the talmi gold blind pipe outer intersect the guard rail 1 that constitutes by at least two stainless steel wires, single-chip microcomputer soft, hardware circuit 10 is drawn by silicone rubber for cable 12, is provided with sealing mechanism between talmi gold blind pipe and the water-fast resin-sealed tube and between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube.Advantages such as the present invention has good resolution, accuracy height, few, the anti-mechanical vibration of spurious mode and impact capacity is strong, response speed fast, suitable long-term use under water.
Description
(1) technical field
The present invention relates to a kind of temperature sensor, particularly a kind of be the digital signal output used under water such as suitable acoustic depth sounding instrument, sonar, seismic monitoring or geothermal anomaly detection, highly sensitive, response speed fast, the resonance type quartz crystal crystal temperature effect sensor of accurate, high stable.
(2) background technology
Resonance type quartz crystal crystal temperature effect sensor is a kind of digital temperature sensor of high-accuracy, high stable.Its output signal is a frequency, and resolution is very high, and temperature drift is minimum, and the change of supply voltage is very little to thermometric accuracy influence, and long-time stability are good, and its temperature resolution is up to 0.0001 ℃, and accuracy is better than 0.05 ℃, and long-time stability are up to 0.02 ℃/year.Chinese patent about this technology is more, and for example: number of patent application is 94243623.7, and name is called " high sensitivity quartz temperature sensor "; Number of patent application is that 95236820.X, name are called " quartz crystal temperature probe "; Number of patent application is 86108025, name is called " QCT "; Number of patent application is 01128468.4, name is called " high-precision intelligent digital earth-temp. instrument "; Number of patent application is 98219201.0, name is called " the tuning-fork type crystal thermometer of high precision fast-response "; Number of patent application is 02132999.0, name is called in the patent documents such as " ultra-small resonance type quartz crystal wave temperature sensors with linear characteristic " disclosed technical scheme etc.
Because above-mentioned temperature sensor is subjected to design and processing, the setting of exciting electrode and the restriction of sensor construction design of the selection of groping of design philosophy, quartz heat sensitive cut type and design, wafer size and making, wafer pattern, has following shortcoming:
1, they mostly adopt round lens formula structure, and volume is bigger, and thermal inertia is strong.Therefore, not only response speed is slow, and can not detect the temperature of short space exactly.
2, because its wafer size is bigger, and encapsulation mostly adopts TO-5 type or 49U type shell, and its form of shelving is a suspension structure, and therefore anti-mechanical vibration and impact resistance are poor.
3, sensor mostly adopts the overtone work of thickness shear B pattern or C pattern, therefore use undersized resonator chip, the coupling of thickness shear holotype and other pattern (flexural vibrations, face shear-vibration, torsional vibration, length extension vibration, contour vibration etc.) usually takes place when particularly adopting the rectangle resonator chip and be subjected to first-harmonic or the influence of the interference of harmonic wave, clutter etc. and cross modulation.Therefore, when wide warm area is worked or when undesired signal is strong, frequency hopping or singular point usually occur, even the failure of oscillation phenomenon takes place.At present mostly be to reduce its interference than mass loadings such as size and employing best metal electrode material, area and thickness, but effect is still undesirable by the limit of selecting chip.
4, the rectangle heat sensitive resonance instrument of overtone work, its amplitude of first harmonic is very big, and the resonance impedance of first-harmonic and overtone resonance impedance are very nearly the same, only differ 1%～9% usually, and the circuit that cooperates mostly adopts C-MOS phase inverter or TTL phase inverter oscillatory circuit.Therefore, some variation of heat sensitive resonance instrument and oscillatory circuit characteristic will cause frequency hopping or failure of oscillation, has a strong impact on the thermometric stability of sensor.Obviously, be difficult to reach 0.0001 ℃ resolution and 0.02 ℃ accuracy.
5, be used for seismic monitoring well or when being used for the measurement of ocean temperature,, mostly adopt following two kinds of structures at present in order to prevent the corrosion of underground water or seawater:
(1) adopt the water-fast resin enclosure of molding type, because the thermal conductivity of water-fast resin is lower, so its response speed is very slow, and time constant is generally 1 minute, even tens minutes.
(2) use stainless steel casing, stainless temperature conductivity is higher, and stainless steel casing response of structure speed is more faster than resin formula structure, but its time constant still is tens of seconds.Its time constant can not satisfy actual request for utilization fully much larger than the copper shell mechanism.In addition, the cable of sensor mostly is a silicone rubber for cable, and sealing between silicone rubber for cable and the stainless steel protection shell and waterproof problem are present difficult problems.The geothermal anomaly inspection well of some earthquake well or earthquake precursors particularly, for example, the well water temperature on ground such as Xinjiang, Gansu, Qinghai, Liaoning is up to more than 95 ℃.This hot water midium or long term that is equivalent under elevated pressures (number MPa) is boiled routine test, because the rapid of thermal expansivity difference of the two and fluid sealant wears out the inefficacy of leaking very soon.
Obviously, that above-mentioned quartz temperature sensor be difficult to obtain is high pressure resistant, water-tight, high-accuracy, the characteristic of high stable, fast-response, therefore can not satisfy the requirements of precision temperature instrument under water such as geothermal anomaly monitoring of acoustic depth sounding instrument, sonar, earthquake or earthquake precursors fully.
(3) summary of the invention
The object of the present invention is to provide a kind of good resolution, accuracy height, few, the anti-mechanical vibration of spurious mode and impact capacity is strong, response speed the is fast suitable long-term piezo-electric resonance type quartz temperature sensor that uses under water.
The object of the present invention is achieved like this:
It comprises the soft of quartz heat sensitive resonance instrument 3 and single-chip microcomputer, hardware circuit 10, quartz heat sensitive resonance instrument 3 and single-chip microcomputer soft, hardware circuit 10 links to each other by internal lead 5 and is installed in the talmi gold blind pipe 2, talmi gold blind pipe 2 is by thin diameter section, tapering transition section between wide section and thin diameter section and the wide section is formed, quartz heat sensitive resonance instrument 3 is positioned at the thin segment of talmi gold blind pipe 2, wide section and transition section talmi gold blind pipe are outside equipped with water-fast resin-sealed tube 17, the front end of water-fast resin-sealed tube 17 be equipped with cover on thin diameter section talmi gold blind pipe outer intersect the guard rail 1 that constitutes by at least two stainless steel wires, single-chip microcomputer soft, hardware circuit 10 is drawn by silicone rubber for cable 12, is provided with sealing mechanism between talmi gold blind pipe and the water-fast resin-sealed tube and between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube.
The present invention can also comprise some architectural features like this:
1, filled up AL in the thin segment of talmi gold blind pipe 2
2O
3Powder.
2, the composition of the sealing mechanism between described talmi gold blind pipe and the water-fast resin-sealed tube comprises water-fast resin nut 7 and the gasket seal 9 that is screwed on the talmi gold blind pipe, between the screw thread on water-fast resin nut 7 and the talmi gold blind pipe screw thread anaerobic sealer 8 is arranged.
3, the sealing mechanism between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube divides 2 sections: one section is the water-fast resin-sealed nut 19 of sealing between water-fast resin-sealed nut 19 of realization and the water-fast resin cartridge 17 and the internal thread 25 and the anaerobic adhesive of water-fast resin cartridge; Another section for the elastic sealant 11 of the perfusion between brass nut 13 and water-fast resin-sealed nut 19 of water-tight between the center pit 20 of realizing resin-sealed nut 19 and the silicone rubber for cable 12 ', the fastening force of rubber seal ring 18, metallic gasket 21, rubber blanket 26, metal nuts 22 and metal nuts 22, make cable 12 and rubber blanket 26 that the formed water-tight of mechanical critical deformation take place and block up 27.
4, in the wide section of talmi gold blind pipe casting glue 11 is arranged.
5, brass nut 13 is arranged in thick section of the talmi gold blind pipe, there is anaerobic adhesive at the external thread place of brass nut 13, between the center pit 15 of brass nut 13 and the silicone rubber for cable 12 that passes through from this hole by fluid sealant 16 sealings.
The core component of the accurate fast-response quartz temperature sensor that suitable temperature detection under water of the present invention is used is soft, the hardware circuit 10 of quartz heat sensitive resonance instrument 3 and single-chip microcomputer.In order to obtain fast-response; quartz heat sensitive resonance instrument 3 is installed in protection in fast, the corrosion resistant talmi gold blind pipe 2 of heat conduction; the physical strength of talmi gold blind pipe is not good enough; for the anti-mechanical vibration that improve this sensor, shock proof characteristic, the guard rail 1 that is made of the intersection of the stainless steel wire more than two has been installed in the outside of this talmi gold pipe.In brass tube, filled up AL around the heat sensitive resonance instrument 3
2O
3Powder.In wide warm area work and high reliability, the cable of sensor adopts silicone rubber for cable 12 in order to ensure sensor.
In order to solve the water-tight problem of silicone rubber for cable and brass blind pipe, the present invention has introduced a sealing transition spare---water-fast resin-sealed tube 17.Utilize the physics chemical action of the screw thread 6 of talmi gold blind pipe 2 lower ends, water-fast resin nut 7, screw thread anaerobic sealer 8, gasket seal 9 and water-fast resin cartridge 17 5, constituted the first road water-tight structure, promptly constituted the first road water-tight line by the reducing place that thin footpath is converted to particle size at the brass blind pipe.Simultaneously, resin-sealed tube 17 still is the installation carrier of above-mentioned stainless steel guard rail 1.
In thick section that single-chip microcomputer is soft, hardware circuit board 10 is installed in the talmi gold blind pipe; The 5th, the internal lead of heat sensitive resonance instrument 3, and water-fast resin-sealed 17 thick section outside that is contained in the talmi gold blind pipe.This kind unitized construction can not only play good electric screening action, and the thick section of talmi gold blind pipe can gold-platedly just can prevent corrosion.Utilize the interaction of circuit board 10, the thick section of talmi gold blind pipe and elasticity casting glue 11 to constitute the second road water-tight structure.Elasticity casting glue 11 plays water-tight and vibration damping double action.
At the afterbody of talmi gold blind pipe, utilize the internal thread 14 of pipe, the external thread of brass nut 13 and the effect of anaerobic adhesive to realize sealing; And the sealing function between the center pit 15 of nut and the silicone rubber for cable 12 that passes through from this hole utilizes fluid sealant 16 to realize.They have constituted the three seals waterproof construction jointly.
Water-fast resin-sealed tube 17 is finished for 2 sections with the water-tight branch of silicone rubber for cable 12:
At first utilize the effect of the internal thread 25 of water-fast resin-sealed nut 19, water-fast resin cartridge and anaerobic adhesive to realize the sealing of water-fast resin-sealed nut 19 and water-fast resin cartridge 17, and the water-tight problem of the center pit 20 of this resin-sealed nut 19 and silicone rubber for cable 12 is utilized following method realization: between brass nut 13 and water-fast resin-sealed nut 19, to fill with elastic sealant.Behind sealing glue solidifying, utilize the fastening force of rubber seal ring 18, metallic gasket 21, rubber blanket 26, metal nuts 22, make cable 12 and rubber blanket 26 that mechanical critical deformation take place, formed water-tight stifled 27.This is the 4th road water-tight structure.
In brief, utilize above-mentioned four road water-tight measures can solve the dynamic and static sealing waterproof problem of the sensor work of in deep water, (being included in) for a long time up in the hot water more than 95 ℃.
Advantages such as the present invention has good resolution, accuracy height, few, the anti-mechanical vibration of spurious mode and impact capacity is strong, response speed fast, suitable long-term use under water.
(4) description of drawings
Accompanying drawing is a structural representation of the present invention.
(5) embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Composition in conjunction with the accurate fast-response piezo-electric resonance type quartz temperature sensor that detects in the suitable water of Fig. 1 comprises 1 metal protection hurdle, is intersected by 2～4 stainless steel wires usually to constitute; The 2nd, sensitive element protection talmi gold blind pipe.Usually constitute by brass in order to improve response speed, should be gold-plated in order to prevent the marine corrosion surface; The 3rd, quartz heat sensitive resonance instrument; 4 magnesium oxide or alumina powder, it guarantees the insulation of internal lead 5 and prevents moving of their mutual positions.The 6th, talmi gold blind pipe screw thread, it and 2 are one, just the surface need not be gold-plated.The 7th, water-fast resin nut.Utilize the extruding force between nut 7, protection tube screw thread 6, the pad 9 and the sealing function of screw thread anaerobic sealer 8 to guarantee the sealing at interface.The 10th, single-chip microcomputer is soft, the circuit board of hardware, and it also is one of key of this sensor.The 11st, elastic sealant, its holding circuit plate avoids making moist and playing cushioning effect.The 12nd, silicone rubber for cable, it plays power supply and output signal effect.13 metallic seal nuts, it has screw thread 14 and center pit 15.In order to improve sealing effectiveness, when threaded together, smear a little screw thread anaerobic adhesive simultaneously.The 16th, the organic elastomer fluid sealant, it guarantees the sealing between cable and the center pit 15.In order to reduce process complexity, 16 and 11 can use the fluid sealant with a kind of trade mark.The 17th, water-fast resin-sealed tube, the 18th, rubber seal ring, the 19th, water-fast resin-sealed lid.It has center pit 20, so that cable passes.
Water-fast resin-sealed tube 17 divides 2 parts to finish with the water-tight of silicone rubber for cable 12: at first utilize water-fast resin-sealed nut 19, the internal thread 25 of water-fast resin cartridge and the effect of anaerobic adhesive realize the sealing of water-fast resin-sealed nut 19 and water-fast resin cartridge 17, and the water-tight problem of the center pit 20 of this resin-sealed nut 19 and silicone rubber for cable 12 utilizes following method to realize: at first filled with the elasticity casting glue between brass nut 13 and water-fast resin-sealed nut 19, after adhesive curing, utilize rubber seal 18 again, metallic gasket 21, rubber blanket 26, the cable 12 that the fastening force of stainless steel nut 22 causes and the deformation of rubber blanket 26 have formed anti-water blocking 27.The 28th, the metal spring folding preventing device of cable, its function is to prevent that rubber cable is owing to the flexural deformation that takes place more than 90 ° or 90 ° fractures.Obviously, four road water-tight structures have been adopted altogether.
Claims (9)
1, a kind of suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water, it comprises the soft of quartz heat sensitive resonance instrument (3) and single-chip microcomputer, hardware circuit (10), it is characterized in that: quartz heat sensitive resonance instrument (3) and single-chip microcomputer soft, hardware circuit (10) links to each other by internal lead (5) and is installed in the talmi gold blind pipe (2), talmi gold blind pipe (2) is by thin diameter section, tapering transition section between wide section and thin diameter section and the wide section is formed, quartz heat sensitive resonance instrument (3) is positioned at the thin diameter section of talmi gold blind pipe (2), wide section and transition section talmi gold blind pipe are outside equipped with water-fast resin-sealed tube (17), the front end of water-fast resin-sealed tube (17) be equipped with cover on thin diameter section talmi gold blind pipe outer intersect the guard rail (1) that constitutes by at least two stainless steel wires, single-chip microcomputer soft, hardware circuit (10) is drawn by silicone rubber for cable (12), is provided with sealing mechanism between talmi gold blind pipe and the water-fast resin-sealed tube and between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube.
2, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 1 is characterized in that: filled up AL in the thin diameter section of talmi gold blind pipe (2)
2O
3Powder.
3, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 1 and 2, it is characterized in that: the composition of the sealing mechanism between described talmi gold blind pipe and the water-fast resin-sealed tube comprises water-fast resin nut (7) and the gasket seal (9) that is screwed on the talmi gold blind pipe, and screw thread anaerobic sealer (8) is arranged between the screw thread on water-fast resin nut (7) and the talmi gold blind pipe.
4, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 1 and 2 is characterized in that: the sealing mechanism between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube divides 2 sections: one section is the water-fast resin-sealed nut (19) of sealing between realization water-fast resin-sealed nut (19) and the water-fast resin-sealed tube (17) and the internal thread (25) and the anaerobic adhesive of water-fast resin-sealed tube; The fastening force of elastic sealant, rubber seal ring (18), metallic gasket (21), rubber blanket (26), metal nuts (22) and the metal nuts (22) of perfusion between brass nut (13) and water-fast resin-sealed nut (19) of water-tight makes silicone rubber for cable (12) and rubber blanket (26) that the formed water-tight of mechanical critical deformation stifled (27) take place between center pit (20) that another section is the water-fast resin-sealed nut of realization (19) and the silicone rubber for cable (12).
5, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 3 is characterized in that: the sealing mechanism between silicone rubber for cable and talmi gold blind pipe and the water-fast resin-sealed tube divides 2 sections: one section is the water-fast resin-sealed nut (19) of sealing between realization water-fast resin-sealed nut (19) and the water-fast resin-sealed tube (17) and the internal thread (25) and the anaerobic adhesive of water-fast resin-sealed tube; The fastening force of elastic sealant, rubber seal ring (18), metallic gasket (21), rubber blanket (26), metal nuts (22) and the metal nuts (22) of perfusion between brass nut (13) and water-fast resin-sealed nut (19) of water-tight makes silicone rubber for cable (12) and rubber blanket (26) that the formed water-tight of mechanical critical deformation stifled (27) take place between center pit (20) that another section is the water-fast resin-sealed nut of realization (19) and the silicone rubber for cable (12).
6, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 1 and 2 is characterized in that: casting glue (11) and fluid sealant (16) are arranged in the wide section of talmi gold blind pipe.
7, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 3 is characterized in that: casting glue (11) and fluid sealant (16) are arranged in the wide section of talmi gold blind pipe.
8, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 4 is characterized in that: casting glue (11) and fluid sealant (16) are arranged in the wide section of talmi gold blind pipe.
9, the suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water according to claim 5 is characterized in that: casting glue (11) and fluid sealant (16) are arranged in the wide section of talmi gold blind pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100723937A CN100554900C (en) | 2007-06-25 | 2007-06-25 | The suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100723937A CN100554900C (en) | 2007-06-25 | 2007-06-25 | The suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water |
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| Publication Number | Publication Date |
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| CN101071083A CN101071083A (en) | 2007-11-14 |
| CN100554900C true CN100554900C (en) | 2009-10-28 |
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| CNB2007100723937A Expired - Fee Related CN100554900C (en) | 2007-06-25 | 2007-06-25 | The suitable accurate fast-response resonance type quartz crystal temperature sensor that detects under water |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539036A (en) * | 2010-12-31 | 2012-07-04 | 广西大学 | Welded type underwater stress measuring device |
| CN204104237U (en) * | 2014-09-26 | 2015-01-14 | 韩长庆 | A kind of hermetically-sealed construction of water body of aquarium temperature measuring equipment |
| CN106768458A (en) * | 2017-03-03 | 2017-05-31 | 云南坤发环境科技有限公司 | A kind of deep water temperature measuring set |
| CN113276438B (en) * | 2021-07-20 | 2021-10-01 | 深之蓝海洋科技股份有限公司 | Liquid level detection sensor assembly, manufacturing method thereof and underwater equipment |
| CN117220634B (en) * | 2023-09-14 | 2024-08-09 | 黑龙江东方学院 | Quartz thermosensitive resonator suitable for wireless passive sensor |
-
2007
- 2007-06-25 CN CNB2007100723937A patent/CN100554900C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 一种新型高精度压电谐振式石英晶体温度传感器. 林冬辉，林金秋.传感器世界，第10期. 2005 |
| 一种新型高精度压电谐振式石英晶体温度传感器. 林冬辉，林金秋.传感器世界，第10期. 2005 * |
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