CN113494930A - Inductive sensor - Google Patents
Inductive sensor Download PDFInfo
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- CN113494930A CN113494930A CN202011003539.4A CN202011003539A CN113494930A CN 113494930 A CN113494930 A CN 113494930A CN 202011003539 A CN202011003539 A CN 202011003539A CN 113494930 A CN113494930 A CN 113494930A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 28
- 238000012937 correction Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- 230000006837 decompression Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
An inductive sensor according to the present invention is an inductive sensor attached to a housing of a hydraulic pressure supply unit of a ship engine, and includes: a power supply unit that receives power supply through a power supply line and supplies necessary power to components of the inductive sensor; a sensing unit that receives power supply from the power supply unit and measures a position of the hydraulic plunger; a control unit which receives a transmission sensing signal from the sensing unit and converts the transmission sensing signal into an electric signal; an output unit that receives and transmits the electric signal from the control unit and transmits the electric signal to the outside through a power output line; and an indicator unit connected in parallel to the power output line, receiving and transmitting the electric signal, and checking a variation in the value measured by the sensor unit or displaying a variation value.
Description
Technical Field
The present invention relates to an inductive sensor, and more particularly, to an inductive sensor which is integrated with an indicator to facilitate maintenance, and which can intuitively confirm whether the inductive sensor itself is operating normally, and provide a user calibration function for correcting the sensor.
Background
The inductive sensor for a marine engine is attached to a casing of an hcu (hydralic cylinder unit), which is a Hydraulic pressure supply unit of the marine engine, and is an important element that can accurately sense the position of a Hydraulic plunger (hydralic plunger) and realize optimal fuel injection (complete combustion) of the marine engine. Particularly whether the fuel is completely combusted, and the environmental restrictions on performance and reinforcement.
In particular, the inductive sensor causes an emergency stop of an engine cylinder and a decompression operation in the event of an abnormality, and thus it is very important to sufficiently check the performance and durability in an environment such as engine vibration and high temperature in consideration of severe operating conditions of an actual ship and to ensure reliability.
Recently, as the oil price increases and the cost of ships increases, efforts are being made to maximize the efficiency of engines, and the progress is being made from mechanical control systems to systems combining mechanical and electronic control systems.
However, the current inductive sensor has a problem that it is difficult for a customer company, a ship owner inspector, and an engineer who actually manages the ship engine to determine whether the sensor is operating normally or to analyze the cause of a failure when an abnormality occurs.
Documents of the prior art
[ patent document ]
(patent document 1) Korean patent No. 10-1741531 (2006, 9, 22)
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an inductive sensor integrated with an indicator, which includes an indicator function to visually confirm whether or not the inductive sensor itself is operating normally, and to visually display a variation in a value of a position of a sensing object measured by a sensing portion.
Further, an inductive sensor capable of directly correcting an error of the inductive sensor in a ship by an engineer by means of correction means of an indicator portion is provided.
The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned are clearly understood by those skilled in the art of the present invention from the following description.
In order to achieve the above object, an inductive sensor according to the present invention is an inductive sensor attached to a casing of a hydraulic pressure supply unit of a ship engine, the inductive sensor including: a power supply unit that receives power supply through a power supply line and supplies necessary power to components of the inductive sensor; a sensing unit that receives power supply from the power supply unit and measures a position of the hydraulic plunger; a control unit which receives a transmission sensing signal from the sensing unit and converts the transmission sensing signal into an electric signal; an output unit that receives and transmits the electric signal from the control unit and transmits the electric signal to the outside through a power output line; and an indicator unit connected in parallel to the power output line, receiving and transmitting the electric signal, and checking a variation in the value measured by the sensor unit or displaying a variation value.
In addition, the indicator portion includes: a wireless communication module enabling wireless communication with a smart terminal including a smart phone; a display unit that displays the variation value; and a correction means for correcting the value of the sensing signal of the sensing portion.
In addition, the indicator portion is not supplied with electricity by the power supply portion, but is supplied with electricity by the power supply line.
Further, the indicator portion is connected in parallel to the power output line, and is configured to be compatible with the output portion by using a multiplexing circuit that receives the supplied power through the power supply line and the transmitted electric signal through the power output line.
Further, the indicator unit is connected to an external communication module, and the external communication module is connected to the power output line, receives an input electric signal, and handles communication with the administrator terminal through USB and ethernet.
The inductive sensor of the present invention has an indicator function to visually confirm whether the inductive sensor itself is operating normally, and to visually display a variation in a value of a position of a sensing object measured by a sensing part in an indicator part, thereby having an effect of inducing a prompt response and solving a problem in determining whether the inductive sensor is operating normally and analyzing a cause of a failure when an abnormality occurs.
In addition, the correction function for correcting the sensor is provided by the correction means of the indicator part, so that the method has the advantage that an engineer can directly operate the method in the ship instead of taking down the product and replacing and maintaining the product outside the ship.
Drawings
Fig. 1 is a block diagram illustrating the configuration of the inductive sensor of the present invention.
FIG. 2 is an exemplary diagram illustrating the inductive sensor of the present invention.
Reference numerals
100: power supply unit
200: sensing part
300: control unit
400: output unit
500: indicator part
510: wireless communication module
520: display unit
530: correction means
600: an external communication module.
Detailed Description
The advantages and features of the invention and the methods of accomplishing the same will become apparent with reference to the following detailed description of the embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various forms different from each other, and the embodiments are provided only for making the disclosure of the present invention more complete, and to inform those skilled in the art of the scope of the present invention completely, and the present invention is defined only by the scope of the claims.
The details required for carrying out the present invention are described below with reference to the accompanying drawings. The same reference numerals refer to the same constituent elements and "and/or" includes all combinations of the items and one or more, regardless of the drawings.
The terminology used in the description is for the purpose of describing the embodiments and is not intended to be limiting of the invention. In this specification, the singular forms also include the plural forms as long as they are not specifically mentioned in the sentence. The use of "comprising" and/or "comprising" in the specification does not preclude the presence or addition of one or more other components in addition to the recited components.
Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention belongs. In addition, generally used dictionary-defined terms should not be interpreted too much or excessively as long as they are not specifically defined.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a block diagram illustrating the configuration of the inductive sensor of the present invention.
If examined with reference to FIG. 1, the inductive sensor as a whole comprises:
First, the power supply unit 100 receives power supply from the outside through a power supply line, and functions to supply required power to the components of the inductive sensor including the sensor unit 200, the control unit 300, and the output unit 400.
Then, the sensor unit 200 receives power supply from the power supply unit 100, and functions to measure the position of the Hydraulic plunger (Hydraulic plunger).
Then, the control unit 300 receives a sensing signal for transmitting the position of the sensing object to be measured from the sensing unit 200, and functions to receive and transmit the sensing signal and convert the sensing signal into an electric signal.
The electrical signal may be an analog signal or a digital signal, and the meaning of the action of converting into the electrical signal means the digitization of the analog signal and the analog signalization of the digital signal.
Although not shown, the control Unit 300 includes a Full-wave rectifier (Full-wave rectifier) and a Low-Pass Filter (Low-Pass Filter), performs a Full-wave rectification and filtering process, and further includes a data register (Digital register data register), a Look-Up Table (LUT), and an Arithmetic Logic Unit (ALU), thereby enabling data processing in a short time.
The control unit 300 includes an Analog-To-Digital Converter (ADC) and a Digital-To-Analog Converter (DAC), and can process digitization of an Analog signal as an electric signal and emulation of a Digital signal by the ADC and the DAC.
The output unit 400 receives and transmits the electric signal (wherein the electric signal means an analog signal) from the control unit, and transmits the electric signal to the outside through a power output line.
More specifically, although not shown, the output unit 400 may include a Voltage-to-Current Converter (Voltage-to-Current Converter) and a Transmitter (Transmitter), and may convert the electrical signal, i.e., an analog signal, into a Current through the Voltage-to-Current Converter and output the Current of 4 to 20mA to the outside through the Transmitter.
The indicator unit 500 is connected in parallel to the power output line, and functions to check the fluctuation of the value measured by the sensor unit 200 or display the fluctuation value thereof by transmitting and receiving the electric signal.
The indicator part 500 is operated by directly receiving power supply through another line of the power supply lines without receiving power supply through the power supply part 100.
The indicator part 500 is connected in parallel to the power output line that transmits a current (4 to 20mA) to the outside, and the indicator part 500 is configured to be compatible with the output part 400 by applying a multiplexing circuit that receives the transmitted power through the other power supply line and an electrical signal (analog signal) received and transmitted through the power output line.
In addition, the indicator part 500 includes a wireless communication module 410 so that it can wirelessly communicate with a smart terminal including a smart phone through the wireless communication module 510.
The wireless communication module 510 is a wireless communication device including wireless fidelity (WIFI) or bluetooth, and may be formed of one or more wireless communication devices.
The indicator section 500 includes a display section 520 and a correction means 530.
The display unit 520 displays the variation value.
The correcting means 530 serves to correct an error that may occur in an electronic circuit including a Low-Pass Filter (Low-Pass Filter) and a Converter (Converter) in the electronic circuit, including not only the sensing signal but also the position measurement value, as a means for correcting the sensing signal of the sensor unit 200.
The inductive sensor including the embodiment of the present invention configured as described above may communicate with the administrator terminal through the external communication module 600.
More specifically, the external communication module 600 receives an input electrical signal (analog signal) from the output unit 400, and performs communication with the administrator terminal through USB (Universal Serial Bus) or Ethernet (Ethernet) processing.
Therefore, the inductive sensor of the present invention may receive data or information required for correcting the sensing signal of the sensing part 200 from the administrator terminal communicating with the external communication module 600, and perform position measurement and correction of the sensing object.
In addition, the external communication module 600 provides data measured by the sensing part 200 to the administrator terminal side, thereby facilitating maintenance.
That is, the sensing unit 200 measures a position sensing object, and transmits a sensing signal (a signal corresponding to position sensing of the position sensing object) to the control unit 300, and the control unit 300 receives and transmits the sensing signal, converts the sensing signal into an electric signal, and transmits the electric signal to the output unit 400.
The output unit 400 receives and transmits the electrical signal from the control unit 300, and transmits the electrical signal (analog signal) to the external communication module 600 side through the power output line.
The indicator unit 500 is connected in parallel to the power output line, receives and transmits the electric signal, and checks a variation in a value measured by the sensor unit 200 or displays a variation value.
In addition, the data of the sensing signal may be transmitted and received to and from a smart terminal (e.g., a smart phone) through wireless communication including WIFI or bluetooth using the wireless communication module 510 of the indicator part 500, and the data transmission and reception process of the sensing signal may be performed to and from an administrator terminal (e.g., a PC) through USB and ethernet communication using the external communication module 600.
That is, the data of the sensing signal measured by the sensing unit 200 may be collected by the administrator terminal, and the control signal may be transmitted to the control unit 300 through the administrator terminal or the smart terminal to implement remote control.
Accordingly, a data-based solution (e.g., an inductive sensor monitoring system or a management system) can be supported for easy maintenance, and in addition, a wireless communication interface is applied, thereby having an effect of easy maintenance.
The output unit 400 is connected to the indicator unit 500, receives and transmits the sensing signal, and checks the change of the value measured by the sensor unit 200 or displays the change value on the indicator unit 500, so that the monitoring can be performed intuitively in the ship, and the correction of the inductive sensor can be performed in the ship by the correction means 530, thereby solving the problem that engineers who actually manage the ship engine originally determine whether the inductive sensor itself is operating normally or not and perform maintenance.
That is, there is an advantage that maintenance is easy by the inductive sensor integrally formed with the indicator, since an engineer can directly operate the sensor in the ship (determine normal operation, correct an error in the function of the sensor, and the like) without removing the inductive sensor except for the case where the inductive sensor needs to be removed.
Fig. 2 is an exemplary view illustrating an inductive sensor of the present invention, and if it is explained with reference to fig. 2, first, the inductive sensor is mounted to a housing of an hcu (hydro cylinder unit) as a hydraulic pressure supply unit of a ship engine, and is coupled and fixed to the housing by means of a fixing portion 20.
The fixing portion 20 is formed to protrude along the outer circumferential surface of the housing 10 of the inductive sensor between the housing 10 of the inductive sensor and the sensing portion 200, and the fixing portion 20 is formed with a plurality of holes 21, and the holes 21 are combined and fixed with the holes of the housing of the hydraulic pressure supply unit by a fixing means such as bolts.
Therefore, the fixing portion 20 is fixedly coupled to the housing of the hydraulic pressure supply unit, so that the inductive sensor of the present invention is fixedly coupled to the housing of the hydraulic pressure supply unit.
The sensing part 200 is formed at a lower portion of the housing 10 of the inductive sensor, and the position of the hydraulic plunger is sensed by the sensing part 200.
More specifically, in the sensor unit 200, the sensor unit 200 has a cylindrical shape, is hollow, and includes a Coil (enameled wire) for generating a signal corresponding to the position of a sensing target (conductor), a bobbin (Coil bobbin) for forming the Coil, and a cover (Cap) therein.
The power supply unit 100, the control unit 300, and the output unit 400 are located on a Printed Circuit Board (PCB) formed on one side of the inside of the inductive sensor case 10, and are configured of a semiconductor chip and various electronic or electrical components required for operation.
The indicator part 500 is detachably formed on the upper portion of the inductive sensor case 10, is connected to the output part 400, receives a transmission electric signal (analog signal), and plays a role of checking a variation of a value measured by the sensor part 200 or displaying a variation value thereof.
The indicator portion 500 includes a display portion 520 and a correction means 530.
The display unit 520 displays the variation value by irradiating light emitted from a light emitting element including an LED, and displaying a number, a character, a symbol, and the like indicating the operation state of the sensor unit 200.
The display unit 520 may be applied in a digital format using an LED plasma display or may be applied in a dial format, but is preferably in a digital format in order to represent a precise measurement value.
The correction means 530 may include a + Button, a-Button, and a confirmation Button, and may be configured in a touch screen form, but not exclusively configured in a Button (Button) form. The + button and the-button may be corrected by ± based on a preset numerical value and an input button.
Therefore, the indicator part 500 checks the variation of the value measured by the sensor part 200 or displays the variation value on the display part 520, so that the intuitive monitoring can be realized in the ship, and the correction means 530 can correct the inductive sensor in the ship, thereby solving the problem that engineers who actually manage the ship engine originally determine whether the inductive sensor itself is normally operated and maintained.
While the embodiments of the present invention have been described with reference to the drawings, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments described above are therefore to be considered in all respects as illustrative and not restrictive.
Claims (5)
1. An inductive sensor to be attached to a housing of a hydraulic supply unit of a marine engine, comprising:
a power supply unit that receives power supply through a power supply line and supplies necessary power to components of the inductive sensor;
a sensing unit that receives power supply from the power supply unit and measures a position of the hydraulic plunger;
a control unit which receives a transmission sensing signal from the sensing unit and converts the transmission sensing signal into an electric signal;
an output unit that receives and transmits the electric signal from the control unit and transmits the electric signal to the outside through a power output line; and
and an indicator unit connected in parallel to the power output line, receiving and transmitting the electric signal, and checking a change in the value measured by the sensor unit or displaying a change value thereof.
2. The inductive sensor according to claim 1,
the indicator portion includes: a wireless communication module enabling wireless communication with a smart terminal including a smart phone; a display unit that displays the variation value; and a correction means for correcting the value of the sensing signal of the sensing portion.
3. The inductive sensor according to claim 1,
the indicator portion receives power supply through the power supply line without receiving power transmission through the power supply portion.
4. The inductive sensor according to claim 3,
the indicator portion is connected in parallel with the power output line,
the indicator unit is configured to be compatible with the output unit by using a multiplexing circuit that receives the supplied electric power through the power supply line and the electric signal transmitted through the power output line.
5. The inductive sensor according to claim 1,
the indicator portion is connected with an external communication module,
and the external communication module is connected to the power output line, receives an input electric signal, and processes communication with the administrator terminal through a USB and an Ethernet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0041749 | 2020-04-06 | ||
| KR20200041749 | 2020-04-06 |
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| Publication Number | Publication Date |
|---|---|
| CN113494930A true CN113494930A (en) | 2021-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011003539.4A Pending CN113494930A (en) | 2020-04-06 | 2020-09-22 | Inductive sensor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993007601A1 (en) * | 1991-09-30 | 1993-04-15 | Milltronics Ltd. | Calibration system for measurement instruments |
| EP0989388A2 (en) * | 1998-09-24 | 2000-03-29 | London Electronics Limited | Programmable digital meters |
| GB0520093D0 (en) * | 2005-10-03 | 2005-11-09 | Tt Electronics Technology Ltd | Sensing apparatus and method |
| US20080127711A1 (en) * | 2006-12-04 | 2008-06-05 | Farag Tarek A Z | Force and Torque Measurements with Calibration and Auto Scale |
| KR20160117734A (en) * | 2015-03-31 | 2016-10-11 | 주식회사오리온테크놀리지 | inductive sensor capable of performing fast and precise position sensing and being easily maintained |
-
2020
- 2020-09-22 CN CN202011003539.4A patent/CN113494930A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993007601A1 (en) * | 1991-09-30 | 1993-04-15 | Milltronics Ltd. | Calibration system for measurement instruments |
| EP0989388A2 (en) * | 1998-09-24 | 2000-03-29 | London Electronics Limited | Programmable digital meters |
| GB0520093D0 (en) * | 2005-10-03 | 2005-11-09 | Tt Electronics Technology Ltd | Sensing apparatus and method |
| US20080127711A1 (en) * | 2006-12-04 | 2008-06-05 | Farag Tarek A Z | Force and Torque Measurements with Calibration and Auto Scale |
| KR20160117734A (en) * | 2015-03-31 | 2016-10-11 | 주식회사오리온테크놀리지 | inductive sensor capable of performing fast and precise position sensing and being easily maintained |
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