CN100376872C - Isolative linear displacement transmitter - Google Patents
Isolative linear displacement transmitter Download PDFInfo
- Publication number
- CN100376872C CN100376872C CNB2006100462241A CN200610046224A CN100376872C CN 100376872 C CN100376872 C CN 100376872C CN B2006100462241 A CNB2006100462241 A CN B2006100462241A CN 200610046224 A CN200610046224 A CN 200610046224A CN 100376872 C CN100376872 C CN 100376872C
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- transmitter
- hall element
- led display
- chip microcomputer
- displacement
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention discloses an isolation type linear displacement transmitting device. The present invention is characterized in that the present invention comprises a hall sensor which can form a magnetic circuit with an outer measuring ring and contains a displacement sensing head, a guiding magnet, a hall sensing device and a radiator outer shell, and a transmitter composed of a monolithic computer provided with a microprocessor, an LED display and a control circuit of the LED display, wherein the hall sensor and the transmitter are electrically connected through a shielded cable, and an outer shell of the hall sensor and an outer shell of the transmitter are in soft and / or hard connection through a stainless steel flexible pipe and / or threads; the other end of the hall sensor is hermetically connected with a pump cover and /or a bracket through the threads. The present invention is suitable for installing on a shielded pump or a magnetic pump in high temperature corrosion environments with easy combustion and easy explosion, and the displacement of a shaft can be accurately measured in real time. The displacement value is displayed on a liquid crystal display screen, or the alarm and the stop are carried out, and / or the remote control for a secondary instrument is realized through 4 to 20 mA currents output by a V/I converter.
Description
Technical field
The present invention relates to adopt the metering outfit that by electric or magnetic means is a feature, relate in particular to the isolative linear displacement transmitter that adopts Hall effect device.
Background technology
In high temperature corrosion, poisonous and inflammable, explosive etc. rotate in hermetic type equipment such as canned motor pump, the magnetic drive pump the ring-like bearing that transmission shaft must adopt high-abrasive material to make.Equipment is in operational process, and transmission shaft has the free-running operation district, and string is moving vertically, and the axle bumper ring will cause the axial end edge abrasion of bearing, and people are difficult to understand its wear extent under the situation of no detecting instrument.Employing experience prophylactic repair mode can be wasted great amount of manpower and material resources, has an accident if overhaul untimely also being easy to.In view of this designing a kind of method with electric or magnetic that can be operated under the harsh operating mode is the measurement mechanism of feature; real-time abrasion condition collection and processing with bearing; and send according to setting in advance of people and to report to the police and/or shut down and dispose signal; for the safe operation of process units, just seem especially important.
Linear hall sensor is a kind of semiconductor devices to the magnetic field intensity sensitivity, with hall effect sensor spare is that the transmitter that core is made can be installed on pump cover or the carriage, and the axial or radial distance voltage signal that obtains pump according to magnetic induction principle comes the measuring distance length variations.The voltage signal of Hall element output is proportional to measuring distance.Because the output voltage signal of Hall element is only linear with the variation of magnetic field intensity, so must at first carry out linearization process when using.The Hall element ultimate-use (limiting service) temperature is 150 ℃, and the operating mode that is higher than 150 ℃ can't be used, so must be with sensor away from high-temperature area when using.On high temperature corrosion, rotation hermetic type equipment such as poisonous, inflammable, explosive, use, must consider to isolate leakproof and easy for installation during installation.
Summary of the invention
The objective of the invention is to propose a kind of is the isolative linear displacement transmitter of core with the Hall effect device, and the digital control transmitter by wherein is converted to digital controlled signal with the displacement of its detection, and then the safe operation of control application apparatus.
Technical solution of the present invention is achieved in that
A kind of isolative linear displacement transmitter, it is characterized in that comprising that an energy ring externally measured with it forms magnetic circuit contains displacement sensing head, the Hall element of guiding magnet, hall sensing device and radiator shell and the transmitter of single-chip microcomputer, LED display and a control circuit thereof that contains microprocessor, realize being electrically connected by shielded cable between described Hall element and the transmitter; The Hall element shell is realized soft and/or hard the connection with the transmitter shell by stainless steel flexible hose and/or screw thread, and the end in addition of Hall element then is connected by thread seal with pump cover and/or carriage.
Single-chip microcomputer, light-emitting diode display and control circuit thereof that described digital intelligent control contains microprocessor are made up of resistance capacity filter, differential amplifier, initialize switch, button, DC/DC power supply changeover device, SOC single-chip microcomputer, LED display, light idol and V/I converter, and the simulating signal of wherein said displacement sensing head collection is sent to resistance capacity filter and differential amplifier; The switching value that initialize switch is set is admitted to single-chip microcomputer with aforementioned simulating signal; by the central processing unit of single-chip microcomputer the setting signal of differential amplifier and initialize switch is compared calculating by key command; send to LED display then, the signal after will handling simultaneously offers the light idol and makes alarm lamp, shuts down lamp control and/or give remote control by V/I converter output 4～20mA signal.
Described externally measured ring is made up of permanent magnet ring and technical pure iron hoop, and they are sleeved on the transmission shaft of application apparatus successively, and permanent magnet ring wherein forms magnetic circuit by the permanent magnetism post of technical pure iron hoop and Hall element.
Compared with prior art, advantage of the present invention is conspicuous, mainly shows:
1, realized the isolated measurement of noncontact, make sensor not contact high temperature, not contact corrosion medium has been broken through the forbidden zone that Hall element high temperature (150～300 ℃) is measured, for high temperature corrosion, inflammable, explosive hermetic type equipment transmission shaft displacement measurement have been opened up new approach.
2, measuring accuracy high measurement scope is big, can monitor in real time and can realize Long-distance Control with the secondary instrument interface, has guaranteed the security of operation of application apparatus.
3, need not application device and carry out the time-based maintenance maintenance, prolonged the safe operation time of equipment, improved work efficiency and saved operating cost.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a split-type structural synoptic diagram of the present invention.
Fig. 3 is a control system theory diagram of the present invention.
Fundamental diagram of the present invention during Fig. 4.
Fig. 1 is a specification digest accompanying drawing of the present invention.
Among the figure, 1 electrical pure iron, 2 fastening bolts, 3 adjust pad, 4 radiator casings, 5 hall sensing devices, 6 plastics keepers, 7 guiding magnet, 8 shielding wires, 9 digital intelligent transmitters, 10 stainless steel flexible hoses, 11 head protectors, 12 outer spacer sleeves, 13 electrical pure iron rings, 14 permanent magnet rings, 15 transmission shafts, magnet rotor in 16,17 interior spacer sleeves, 18 pump housings.
Embodiment
As Fig. 1,2, a kind of isolative linear displacement transmitter shown in 3 and 4 is characterized in that comprising that an energy and externally measured ring form sensor and a transmitter that is made of transmitter shell, the single-chip microcomputer that contains microprocessor, LED display and intelligent control module of containing displacement sensing head, guiding magnet, Hall element and radiator shell of magnetic circuit.Wherein said Hall element and transmitter are realized being electrically connected by shielded cable, realize that by stainless steel flexible hose and/or screw thread flexible pipe and/or screw thread connect firmly between sensor and the transmitter housing; The end in addition of Hall element shell then is threaded with pump cover and/or carriage.Described externally measured ring is contained on the transmission shaft of application apparatus, and when equipment operation, measurement ring can produce axial motion together along with transmission shaft, and this axial motion can have influence on the variation of magnetic field intensity, and then changes the voltage output signal of Hall element.Output signal is received and sends into successively resistance capacity filter, differential amplifier and SOC single-chip microcomputer by the displacement sensing head; this single-chip microcomputer carries out the A/D conversion as central processing unit to the shift simulation signal of gathering; compare calculating with analog switch amount by initialize switch and button input; can calculate central point, zone of alarm and the parking area of transmission shaft automatically by three instruction button transmitters, and remember these data.Then it is given light-emitting diode display respectively, light idol alarm lamp and shutdown lamp are controlled, and, use for Long-distance Control simultaneously by the current signal of V/I converter output 4～20mA.In order to adapt to multiple abominable situation, this device adopts isolated fit with application apparatus, in the spacer sleeve, the displacement sensing head of Hall element then was contained in the outer spacer sleeve in externally measured ring was contained in, and the radiator shell of sensor is realized being tightly connected by screw thread with outer spacer sleeve.The resistance capacity filter that uses in the control circuit, differential amplifier and SOC single-chip microcomputer all adopt the SMD electronic component of commercially available technical grade.
Claims (3)
1. kind isolative linear displacement transmitter, it is characterized in that comprising that an energy ring externally measured with it forms Hall element and a transmitter (9) that is made of transmitter shell, the single-chip microcomputer that contains microprocessor, LED display and intelligent control module of containing displacement sensing head (1), guiding magnet (7), hall sensing device (5) and radiator shell (4) of magnetic circuit, realize being electrically connected by shielded cable (8) between described Hall element and the transmitter; The Hall element shell is realized soft or hard the connection with the transmitter shell by stainless steel flexible hose (10) or screw thread, and the end in addition of Hall element then is connected by thread seal with pump cover and/or carriage.
2. isolative linear displacement transmitter according to claim 1, it is characterized in that a described transmitter that is made of transmitter shell, the single-chip microcomputer that contains microprocessor, LED display and intelligent control module is made up of resistance capacity filter, differential amplifier, initialize switch, button, DC/DC power supply changeover device, SOC single-chip microcomputer, LED display, light idol and V/I converter, the simulating signal of wherein said displacement sensing head collection is sent to resistance capacity filter and differential amplifier successively; Switching value that initialize switch is set and aforementioned simulating signal rise and are admitted to single-chip microcomputer; by the microprocessor of single-chip microcomputer the setting signal of differential amplifier and initialize switch is compared calculating by key command; send to LED display then, the signal after will handling simultaneously offers the light idol and makes alarm lamp, shuts down lamp control and/or give remote control by V/I converter output 4～20mA signal.
3. isolative linear displacement transmitter according to claim 1 and 2, it is characterized in that described externally measured ring is made up of permanent magnet ring and technical pure iron hoop, they are sleeved on the transmission shaft of application apparatus successively, and permanent magnet ring wherein forms magnetic circuit by the guiding magnet of technical pure iron hoop and Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462241A CN100376872C (en) | 2006-03-28 | 2006-03-28 | Isolative linear displacement transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100462241A CN100376872C (en) | 2006-03-28 | 2006-03-28 | Isolative linear displacement transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1825066A CN1825066A (en) | 2006-08-30 |
| CN100376872C true CN100376872C (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100462241A Expired - Fee Related CN100376872C (en) | 2006-03-28 | 2006-03-28 | Isolative linear displacement transmitter |
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| Country | Link |
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| CN (1) | CN100376872C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI628527B (en) * | 2017-01-11 | 2018-07-01 | 加銳企業有限公司 | Programmable linear displacement sensing device |
| DE102018105143A1 (en) | 2018-03-06 | 2019-09-12 | Chia Rey Enterprise Co., Ltd. | Measuring head of a sensor device |
| DE102018112398A1 (en) * | 2018-05-23 | 2019-11-28 | Guboa Technology Co., Ltd | Device for detecting a linear displacement |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712547B (en) * | 2014-01-07 | 2016-08-17 | 王允学 | Bearing monitoring instrument |
| CN103913182B (en) * | 2014-04-03 | 2016-05-11 | 大连华城电子有限公司 | Full isolation on-line measurement monitoring system |
| CN107907730A (en) * | 2017-11-09 | 2018-04-13 | 合肥中科电器科学研究有限责任公司 | Zero-flux Hall large-current sensor device |
| JP7126087B2 (en) * | 2017-11-30 | 2022-08-26 | 日本精機株式会社 | stroke sensor |
| CN112461544A (en) * | 2020-11-17 | 2021-03-09 | 王允学 | Axial position detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141888Y (en) * | 1992-10-22 | 1993-09-08 | 浙江大学 | High pressure isolated Hall effect displacement transducer |
| CN1343871A (en) * | 2001-10-12 | 2002-04-10 | 厦门大学 | Hall follow-up shift sensor |
| US6566865B2 (en) * | 2000-11-20 | 2003-05-20 | Aisin Seiki Kabushiki Kaisha | Non-contact rotational displacement detecting device |
| CN2591605Y (en) * | 2002-12-20 | 2003-12-10 | 李平 | Central-shaft pedal torque sensor |
| JP2004279329A (en) * | 2003-03-18 | 2004-10-07 | Komatsu Ltd | Displacement sensor |
-
2006
- 2006-03-28 CN CNB2006100462241A patent/CN100376872C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141888Y (en) * | 1992-10-22 | 1993-09-08 | 浙江大学 | High pressure isolated Hall effect displacement transducer |
| US6566865B2 (en) * | 2000-11-20 | 2003-05-20 | Aisin Seiki Kabushiki Kaisha | Non-contact rotational displacement detecting device |
| CN1343871A (en) * | 2001-10-12 | 2002-04-10 | 厦门大学 | Hall follow-up shift sensor |
| CN2591605Y (en) * | 2002-12-20 | 2003-12-10 | 李平 | Central-shaft pedal torque sensor |
| JP2004279329A (en) * | 2003-03-18 | 2004-10-07 | Komatsu Ltd | Displacement sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI628527B (en) * | 2017-01-11 | 2018-07-01 | 加銳企業有限公司 | Programmable linear displacement sensing device |
| DE102018105143A1 (en) | 2018-03-06 | 2019-09-12 | Chia Rey Enterprise Co., Ltd. | Measuring head of a sensor device |
| DE102018112398A1 (en) * | 2018-05-23 | 2019-11-28 | Guboa Technology Co., Ltd | Device for detecting a linear displacement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1825066A (en) | 2006-08-30 |
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