CN206593755U - Digital low-frequency vibration sensing device based on DSP - Google Patents
Digital low-frequency vibration sensing device based on DSP Download PDFInfo
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- CN206593755U CN206593755U CN201720284289.3U CN201720284289U CN206593755U CN 206593755 U CN206593755 U CN 206593755U CN 201720284289 U CN201720284289 U CN 201720284289U CN 206593755 U CN206593755 U CN 206593755U
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- mounting seat
- sheet gasket
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Abstract
The utility model provides a kind of digital low-frequency vibration sensing device based on DSP, including sensing unit, conditioning unit and connection cables；Sensing unit includes：Geophone, sleeve, mounting seat, upper lid, the first rubber sheet gasket, the second rubber sheet gasket and rubber cap；The geophone that the inner tight insertion of sleeve and the inner chamber of sleeve match.Advantage is：The housing of sensing unit is designed, geophone is located in sleeve, and sleeve is installed on base, base is bolted mode fixed on testee again, therefore, is connected by screw bolts mode, with the convenient advantage of installation and removal；In addition, sensing unit also has the advantages that accuracy of detection is high and water resistance is good；Sensing element and conditioning unit are provided separately using cable, on the one hand, sensing element partial volume very little, conditioning unit uses general shell connector, both mount and dismount very convenient.
Description
Technical field
The utility model is related to a kind of sensor, and in particular to a kind of digital low-frequency vibration sensing device based on DSP.
Background technology
, all there is different degrees of vibration in the slow-speed of revolution rotating machinery such as turbine-generator units, vibration is in the process of running
Turbine-generator units are influenceed normally to run and endanger the main source of unit durability.In real time in turbine-generator units running
Vibration Condition be monitored, when vibration values exceed defined permissible value, in time using solution, be conducive to improving water wheels
The safety and economic operation level of generating set.
Existing vibration of hydrogenerator set sensor, mainly with following deficiency：Vibrating sensor by conditioning unit and
Sensing unit is integrated, when being installed to testee surface, and volume is big, with installation and removal it is inconvenient the problem of.
Utility model content
The defect existed for prior art, the utility model provides a kind of digital low-frequency vibration sensing dress based on DSP
Put, can effectively solve the above problems.
The technical solution adopted in the utility model is as follows：
The utility model provides a kind of digital low-frequency vibration sensing device based on DSP, including sensing unit (1), conditioning
Unit (2) and connection cables (3)；
The sensing unit (1) includes：Geophone (1.1), sleeve (1.2), mounting seat (1.3), upper lid
(1.4), the first rubber sheet gasket (1.5), the second rubber sheet gasket (1.6) and rubber cap (1.7)；The bottom of the sleeve (1.2) leads to
First rubber sheet gasket (1.5) is crossed to be tightly fixed in the mounting seat (1.3)；The mounting seat (1.3) offers
First base mounting hole (1.3.1), by the first base mounting hole (1.3.1), the mounting seat (1.3) is fixed to
Testee；The seismic detection that the inner tight insertion of the sleeve (1.2) and the inner chamber of the sleeve (1.2) match
Device (1.1)；The top of the sleeve (1.2) is tightly fastened the upper lid (1.4) by second rubber sheet gasket (1.6), leads to
The pressing effect of the upper lid (1.4) is crossed, being tightly fastened for the geophone (1.1) and the sleeve (1.2) is realized, enters
And ensure the vibration accurate transfer of the sleeve (1.2) to the geophone (1.1)；The upper lid (1.4) offers
Central through hole, the rubber cap (1.7) is installed in the central through hole；One end of the connection cables (3) and the earthquake
The lead-out terminal connection of wave detector (1.1), the other end of the connection cables (3), which is passed through, to be opened in the rubber cap (1.7)
After the cap through hole of the heart, the input terminal of the conditioning unit (2) outside with being arranged at the sensing unit (1) is connected.
It is preferred that, the geophone (1.1) is magnetoelectric seis.
It is preferred that, the sleeve (1.2) is cylindrical stainless steel sleeve；The mounting seat (1.3) is installed for stainless steel
Base；The upper lid (1.4) is stainless steel upper cover.
It is preferred that, the upper lid (1.4) and the sleeve (1.2) they are thread connecting mode.
It is preferred that, the mounting seat (1.3) is further opened with second base mounting hole (1.3.2), first rubber blanket
Piece (1.5) offers said spacer mounting bores in correspondence position, using second base mounting hole (1.3.2) described in screw bolt passes and
After the said spacer mounting bores, enter in the sleeve (1.2), and then realize the sleeve (1.2), first rubber sheet gasket
(1.5) and the mounting seat (1.3) bolt connection.
It is preferred that, the connection cables (3) are shielded cable.
The digital low-frequency vibration sensing device based on DSP that the utility model is provided has advantages below：
(1) housing of sensing unit is designed, geophone is located in sleeve, and sleeve is installed on base
On, base is bolted mode fixed on testee again, therefore, is connected by screw bolts mode, with peace installation and dismantling
Unload convenient advantage；In addition, sensing unit also has the advantages that accuracy of detection is high and water resistance is good；
(2) sensing element and conditioning unit are provided separately using cable, on the one hand, sensing element partial volume very little,
Conditioning unit uses general shell connector, and both mount and dismount very convenient；On the other hand, sensing element and conditioning unit
In any one part break down can be individually replaced, the use of another part is not influenceed.
Brief description of the drawings
The structural representation for the sensing unit that Fig. 1 provides for the utility model；
The structural representation for the conditioning unit that Fig. 2 provides for the utility model.
Embodiment
In order that technical problem, technical scheme and beneficial effect that the utility model is solved are more clearly understood, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
The utility model provides a kind of digital low-frequency vibration sensing device based on DSP, including sensing unit 1, conditioning list
Member 2 and connection cables 3.Sensing unit is affixed directly to testee surface, direct measurement testee vibration signal.Conditioning is single
Member 2 is separately positioned with sensing unit, near testee, also, sensing unit is connected by connection cables and conditioning unit
Connect, connection cables 3 use anti-interference shielded cable, the vibration signal for sensing element to be detected passes to conditioning unit,
The vibration signal that conditioning unit is detected to sensing unit carries out signal condition, so that final testee vibration signal is obtained,
Realize testee vibration measurement.In the utility model, sensing unit and conditioning unit use split-type design, therefore, reduce
The volume of sensing unit, is easily installed；Further, since conditioning unit is not with testee synchronous vibration, conditioning electricity is improved
The life-span on road and functional reliability.In addition, a kind of mounting structure is have also been devised, it is convenient that sensing unit is installed to testee,
Ensure measurement accuracy simultaneously.Sensing unit and conditioning unit are discussed in detail separately below：
(1) sensing unit
It is the structural representation of sensing unit with reference to Fig. 1, sensing unit 1 includes：Geophone 1.1, sleeve 1.2, peace
Fill base 1.3, upper lid 1.4, the first rubber sheet gasket 1.5, the second rubber sheet gasket 1.6 and rubber cap 1.7；The bottom of sleeve 1.2 leads to
Cross the first rubber sheet gasket 1.5 to be tightly fixed in mounting seat 1.3, in practical application, mounting seat 1.3 is further opened with the second bottom
Seat mounting hole 1.3.2, the first rubber sheet gasket 1.5 offers said spacer mounting bores in correspondence position, using screw bolt passes second
After base installing hole 1.3.2 and said spacer mounting bores, enter in sleeve 1.2, realize sleeve 1.2, the first rubber sheet gasket 1.5 and peace
The bolt connection of base 1.3 is filled, and then sleeve is fixed to mounting seat；Mounting seat 1.3 offers four first base peaces
Hole 1.3.1 is filled, by first base mounting hole 1.3.1, mounting seat 1.3 is fixed to testee；The inside of sleeve 1.2 is tight
The geophone 1.1 that the inner chamber of close insertion and sleeve 1.2 matches；The top of sleeve 1.2 is tight by the second rubber sheet gasket 1.6
Close fixed cover 1.4, sets acting as the second rubber sheet gasket：The service life of electronic device in waterproof action, extension shell；
Acted on by the pressing of upper lid 1.4, realize being tightly fastened for geophone 1.1 and sleeve 1.2, and then guarantee sleeve 1.2
Accurate transfer is vibrated to geophone 1.1；Upper lid 1.4 offers central through hole, and rubber cap 1.7 is installed to central through hole
In；One end of connection cables 3 is connected with the lead-out terminal of geophone 1.1, and the other end of connection cables 3, which is passed through, is opened in rubber
After the cap through hole at the center of Capsule 1.7, it is connected with the input terminal for the conditioning unit 2 being arranged at outside sensing unit 1.By setting
Rubber cap, on the one hand plays a part of waterproof, on the other hand plays a part of fixed cable.
In practical application, geophone 1.1 is magnetoelectric seis.Sleeve 1.2 is cylindrical stainless steel sleeve；
Mounting seat 1.3 is stainless steel mounting seat；Upper lid 1.4 is stainless steel upper cover.Upper lid 1.4 and sleeve 1.2 are threaded connection side
Formula.Mounting seat 1.3 is further opened with second base mounting hole 1.3.2, by second base mounting hole 1.3.2, realizes sleeve 1.2
With the bolt connection of mounting seat 1.3.
In the utility model, round rubber pad between mounting seat and sleeve is act as：On the one hand play close
Seal the service life of electronic device in the effect of waterproof, extension shell；On the other hand geophone is compressed, it is ensured that shell and ground
The uniformity of wave detector vibration is shaken, so that ensure measured object vibration signal accurate conduction that shell sensitivity arrives to geophone,
Ensure measuring accuracy.
(2) conditioning unit
It is the structure chart of conditioning unit with reference to Fig. 2, conditioning unit is used to be amplified the vibration data of wave detector, filtered
The processing such as ripple, compensation low frequency (can as little as 0.4Hz) vibration signal, the vibration data after compensation can be simultaneously with 4-20mA simulation
The form output of electric current and the data signal of universal serial port 485.
Conditioning unit 2 includes：Plastic casing 2.1 and modulate circuit plate 2.2；Wherein, can be very convenient by plastic casing
Conditioning unit is fixed on the structural member of standard.Modulate circuit plate is used for the measured object vibration detected to geophone
Signal is nursed one's health, and the size of modulate circuit plate can be securely seated between in shell after being designed according to the technical requirements of shell
Portion.Modulate circuit plate has 4 external interfaces, respectively the 1st external interface 2.2.1, the 2nd external interface 2.2.2, the 3rd external
Interface 2.2.3 and the 4th external interface 2.2.4；1st external interface 2.2.1 is used for the output data for receiving geophone；2nd
External interface 2.2.2 is power interface, with four terminals, and two of which terminal is used for external direct current 24V voltages and ground voltage,
The positive 12V of the exportable direct current of two other terminal and negative 12V voltages；3rd external interface 2.2.3 has four terminals, two of which
Terminal can be with external direct current 24V voltages and ground voltage, and two other terminal exports conditioning in the form of 4-20mA analog current
Wave detector vibration information afterwards.4th external interface 2.2.4 is general 485 serial ports, and conditioning can either be exported in the form of digital quantity
Wave detector vibration information afterwards can also export diagnostic message, such as fault eigenvalue according to user's request.
The digital low-frequency vibration sensing device based on DSP that the utility model is provided has advantages below：
(1) housing of sensing unit is designed, geophone is located in sleeve, and sleeve is installed on base
On, base is bolted mode fixed on testee again, therefore, is connected by screw bolts mode, with peace installation and dismantling
Unload convenient advantage；In addition, sensing unit also has the advantages that accuracy of detection is high and water resistance is good；
(2) sensing element and conditioning unit are provided separately using cable, on the one hand, sensing element partial volume very little,
Conditioning unit uses general shell connector, and both mount and dismount very convenient；On the other hand, sensing element and conditioning unit
In any one part break down can be individually replaced, the use of another part is not influenceed.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching should also regard protection domain of the present utility model.
Claims (6)
1. a kind of digital low-frequency vibration sensing device based on DSP, it is characterised in that including sensing unit (1), conditioning unit
And connection cables (3) (2)；
The sensing unit (1) includes：Geophone (1.1), sleeve (1.2), mounting seat (1.3), upper lid (1.4), the
One rubber sheet gasket (1.5), the second rubber sheet gasket (1.6) and rubber cap (1.7)；The bottom of the sleeve (1.2) passes through described
One rubber sheet gasket (1.5) is tightly fixed in the mounting seat (1.3)；The mounting seat (1.3) offers first base
Mounting hole (1.3.1), by the first base mounting hole (1.3.1), measured object is fixed to by the mounting seat (1.3)
Body；The geophone that the inner tight insertion of the sleeve (1.2) and the inner chamber of the sleeve (1.2) match
(1.1)；The top of the sleeve (1.2) is tightly fastened the upper lid (1.4) by second rubber sheet gasket (1.6), passes through
The pressing effect of the upper lid (1.4), realizes being tightly fastened for the geophone (1.1) and the sleeve (1.2), and then
Ensure the vibration accurate transfer of the sleeve (1.2) to the geophone (1.1)；During the upper lid (1.4) offers
Heart through hole, the rubber cap (1.7) is installed in the central through hole；Examined with the earthquake one end of the connection cables (3)
The lead-out terminal connection of ripple device (1.1), the other end of the connection cables (3), which is passed through, is opened in the rubber cap (1.7) center
Cap through hole after, the input terminal of the conditioning unit (2) outside with being arranged at the sensing unit (1) is connected.
2. the digital low-frequency vibration sensing device according to claim 1 based on DSP, it is characterised in that the earthquake inspection
Ripple device (1.1) is magnetoelectric seis.
3. the digital low-frequency vibration sensing device according to claim 1 based on DSP, it is characterised in that the sleeve
(1.2) it is cylindrical stainless steel sleeve；The mounting seat (1.3) is stainless steel mounting seat；The upper lid (1.4) is stainless
Covered on steel.
4. the digital low-frequency vibration sensing device according to claim 1 based on DSP, it is characterised in that the upper lid
(1.4) and the sleeve (1.2) be thread connecting mode.
5. the digital low-frequency vibration sensing device according to claim 1 based on DSP, it is characterised in that the installation bottom
Seat (1.3) is further opened with second base mounting hole (1.3.2), and first rubber sheet gasket (1.5) offers pad in correspondence position
Piece mounting hole, after second base mounting hole (1.3.2) described in screw bolt passes and the said spacer mounting bores, enters institute
State in sleeve (1.2), and then realize the sleeve (1.2), first rubber sheet gasket (1.5) and the mounting seat (1.3)
Bolt connection.
6. the digital low-frequency vibration sensing device according to claim 1 based on DSP, it is characterised in that the connecting line
Cable (3) is shielded cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284289.3U CN206593755U (en) | 2017-03-22 | 2017-03-22 | Digital low-frequency vibration sensing device based on DSP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284289.3U CN206593755U (en) | 2017-03-22 | 2017-03-22 | Digital low-frequency vibration sensing device based on DSP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206593755U true CN206593755U (en) | 2017-10-27 |
Family
ID=60121450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720284289.3U Active CN206593755U (en) | 2017-03-22 | 2017-03-22 | Digital low-frequency vibration sensing device based on DSP |
Country Status (1)
| Country | Link |
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| CN (1) | CN206593755U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967998A (en) * | 2019-04-25 | 2019-07-05 | 钱荣毅 | A kind of automatic attaching/detaching apparatus of node type geophone |
| CN110440895A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of vibrating sensor waterproof case |
-
2017
- 2017-03-22 CN CN201720284289.3U patent/CN206593755U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967998A (en) * | 2019-04-25 | 2019-07-05 | 钱荣毅 | A kind of automatic attaching/detaching apparatus of node type geophone |
| CN110440895A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of vibrating sensor waterproof case |
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