CN114199286A - Incremental electromagnetic encoder - Google Patents
Incremental electromagnetic encoder Download PDFInfo
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- CN114199286A CN114199286A CN202111249911.4A CN202111249911A CN114199286A CN 114199286 A CN114199286 A CN 114199286A CN 202111249911 A CN202111249911 A CN 202111249911A CN 114199286 A CN114199286 A CN 114199286A
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- incremental
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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
- G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/249—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
Abstract
The invention relates to an incremental electromagnetic encoder, which is characterized by comprising: a magnet disposed at a rotation axis of the moving device; the magnetic sensing sensor is used for sensing a magnet arranged at the position of the motion equipment and obtaining an incremental signal, carrying out analog-to-digital conversion processing on the collected magnetic-inductive incremental signal to obtain an incremental digital signal, and meanwhile, carrying out subdivision processing on the incremental digital signal to obtain a subdivision signal related to the rotation angle; the control input end of the control circuit board is connected with the signal output end of the magnetic sensing sensor, and the control circuit board calculates the position of the moving equipment according to the incremental digital signal and the subdivision signal and outputs a detection signal; the magnetic sensor adjusts the number of incremental signals output by the sensing magnet of the magnetic sensor according to the programmable logic configuration of the control circuit board. The application can improve the environmental suitability of the encoder, effectively prolong the service life of the encoder, simultaneously realize the optional switching of the signal form of the output signal and improve the use flexibility of the encoder.
Description
Technical Field
The invention relates to the technical field of position encoders, in particular to an incremental electromagnetic encoder.
Background
The incremental encoder converts displacement into periodic electrical signals, and then converts the electrical signals into counting pulses, and the number of the pulses is used for expressing the magnitude of the displacement. The existing incremental encoder sets the number of output signals through a code wheel, and realizes the determination of the rotating position and the rotating number of turns through the combination of a light source sensor and the code wheel. In traditional incremental encoder, in case confirm the code wheel, this incremental encoder output signal number is just unique, can't modify, also can't carry out the adjustment of adaptability according to the operating mode in the later stage promptly, and in addition, the code wheel is easily dirty fragile, defects such as unable high temperature resistant, in case the code wheel goes wrong, the encoder just can't normally work.
In addition, the output models of the traditional incremental encoder are various, but the output models can be set before leaving a factory only according to the requirements of customers, once the output signals of the customers are selected incorrectly, the equipment cannot be accessed, and the compatibility is very poor.
Disclosure of Invention
The invention aims to provide an incremental electromagnetic encoder which can improve the environmental adaptability of the encoder, effectively prolong the service life of the encoder, realize the optional switching of the signal form of an output signal and improve the use flexibility of the encoder.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an incremental electromagnetic encoder, comprising:
the magnet is arranged at the rotating shaft of the movement equipment and is set corresponding to different mechanical displacement intervals of the movement equipment;
the magnetic sensing sensor is used for sensing a magnet arranged at the position of the motion equipment and obtaining an incremental signal, carrying out analog-to-digital conversion processing on the acquired magnetic-sensed incremental signal to obtain an incremental digital signal, and meanwhile, carrying out subdivision processing on the incremental digital signal to obtain a subdivision signal related to a rotation angle;
the control input end of the control circuit board is connected with the signal output end of the magnetic sensing sensor, and the control circuit board calculates the position of the motion equipment according to the incremental digital signal and the subdivision signal and outputs a detection signal;
and the magnetic sensor adjusts the number of incremental signals output by the sensing magnet of the magnetic sensor according to the programmable logic configuration of the control circuit board.
For the above technical solution, the applicant has further optimization measures.
Optionally, a phase difference angle value is preset in the control circuit board, the increment signal of the magnetic sensor includes a first increment signal and a second increment signal, and the first increment signal and the second increment signal are square wave signals with a phase difference equal to the preset phase difference angle value.
Further, the phase difference existing between the first incremental signal and the second incremental signal is used as a direction signal of the moving equipment.
Furthermore, the magnetic sensor senses and detects the magnetic flux of the magnet, and the relative position of the magnet and the magnetic sensor at the maximum value of the magnetic flux is used as a reference origin for realizing the correction of the magnet and the magnetic sensor.
Furthermore, the incremental electromagnetic encoder further comprises a counter, and the counter is connected with the signal output end of the control circuit board.
Optionally, the working voltage of the incremental encoder is 5-30V direct current voltage.
Optionally, an electronic soft switch is configured at the magnetic sensor for switching the form and the voltage amplitude of the output signal of the magnetic sensor.
Further, the output signals comprise TTL signals, HTL signals, open drain signals and differential signals.
Optionally, a direction determination circuit is further disposed in the incremental electromagnetic encoder, and is configured to determine a rotation direction of a rotating shaft of the motion device.
Optionally, a signal shunt circuit is disposed on the control circuit board, and the detection signal output by the control circuit board is at least divided into two paths by the signal shunt circuit and is used by an external device.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the application discloses incremental electromagnetic encoder, its structural design that combines magnet through the magnetic sensing inductor has replaced traditional code wheel and photoelectric sensing detection's structure, utilizes the characteristics of high temperature resistant, the stable performance of magnetic sensing inductor, but has advantages such as wide voltage power supply, and the magnetic sensing inductor can both normally work under-40 ~125 degrees centigrade environment. The working stability of the encoder is effectively guaranteed, the service life of the encoder is prolonged, programmable adjustment is realized in a formulated range, and the adaptability of the product is improved.
Furthermore, the incremental electromagnetic encoder introduces the electronic soft switch, can realize the controllable adjustment of the signal form and the voltage amplitude of the output signal of the incremental electromagnetic encoder, is convenient to adjust and good in controllability, and realizes the functional diversity of the electromagnetic encoder.
Furthermore, the signal shunt circuit that this application increased can divide into the detected signal of output multichannel and supply two at least equipment to use, can guarantee the job consistency of two equipment, and the synchronous rate is high, improves the whole job stabilization nature of equipment.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a functional block diagram of an incremental electromagnetic encoder in accordance with one embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
This embodiment describes an incremental electromagnetic encoder, as shown in fig. 1, comprising:
the magnet is arranged at the rotating shaft of the movement equipment and is set corresponding to different mechanical displacement intervals of the movement equipment;
the magnetic sensing sensor is used for sensing a magnet arranged at the position of the motion equipment and obtaining an incremental signal, carrying out analog-to-digital conversion processing on the acquired magnetic-sensed incremental signal to obtain an incremental digital signal, and meanwhile, carrying out subdivision processing on the incremental digital signal to obtain a subdivision signal related to a rotation angle;
the control input end of the control circuit board is connected with the signal output end of the magnetic sensing sensor, and the control circuit board calculates the position of the motion equipment according to the incremental digital signal and the subdivision signal and outputs a detection signal;
and the magnetic sensor adjusts the number of incremental signals output by the sensing magnet of the magnetic sensor according to the programmable logic configuration of the control circuit board.
The incremental electromagnetic encoder of this embodiment, it has replaced traditional code wheel and photoelectric sensing detection's structure through the structural design of magnetic sensing inductor combination magnet, utilizes the characteristics of high temperature resistant, the stable performance of magnetic sensing inductor, has advantages such as but wide voltage power supply, and the magnetic sensing inductor can both normally work under 40~125 ℃ of temperature environment. The working stability of the encoder is effectively guaranteed, the service life of the encoder is prolonged, programmable adjustment is realized in a formulated range, and the adaptability of the product is improved.
In order to improve the adjustability of the electromagnetic encoder, a phase difference angle value is preset in the control circuit board, the increment signal of the magnetic sensor comprises a first increment signal and a second increment signal, and the first increment signal and the second increment signal are square wave signals with a phase difference equal to the preset phase difference angle value.
Further, the phase difference existing between the first incremental signal and the second incremental signal is used as a direction signal of the moving equipment. The magnetic flux of the magnet is detected in the sensing mode through the magnetic sensing device, and the relative position of the magnet and the magnetic sensing device at the maximum value of the magnetic flux is used as a reference origin for achieving correction of the magnet and the magnetic sensing device.
Optionally, the incremental electromagnetic encoder further comprises a counter, and the counter is connected with a signal output end of the control circuit board and can be used for metering the number of rotation turns of the motion equipment.
Optionally, the working voltage of the incremental encoder is 5-30V dc voltage, and the incremental encoder can work at-40-125 ℃.
Optionally, an electronic soft switch is configured at the magnetic sensor for switching a form and a voltage amplitude of an output signal of the magnetic sensor, where the output signal includes a TTL signal, an HTL signal, an open-drain signal, and a differential signal. In addition, the incremental electromagnetic encoder is also provided with a direction judging circuit for judging the rotating direction of the rotating shaft of the motion equipment. The incremental electromagnetic encoder introduces the electronic soft switch, can realize the controllable adjustment of the signal form and the voltage amplitude of the output signal of the incremental electromagnetic encoder, is convenient to adjust and good in controllability, and realizes the functional diversity of the electromagnetic encoder.
In addition, a signal shunt circuit is disposed on the control circuit board, and the detection signal output by the control circuit board is at least divided into two paths by the signal shunt circuit and is provided for an external device. The added signal shunt circuit can divide the output detection signals into multiple paths for at least two devices, the working consistency of the two devices can be guaranteed, the synchronization rate is high, and the overall working stability of the devices is improved.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. An incremental electromagnetic encoder, comprising:
the magnet is arranged at the rotating shaft of the movement equipment and is set corresponding to different mechanical displacement intervals of the movement equipment;
the magnetic sensing sensor is used for sensing a magnet arranged at the position of the motion equipment and obtaining an incremental signal, carrying out analog-to-digital conversion processing on the acquired magnetic-sensed incremental signal to obtain an incremental digital signal, and meanwhile, carrying out subdivision processing on the incremental digital signal to obtain a subdivision signal related to a rotation angle;
the control input end of the control circuit board is connected with the signal output end of the magnetic sensing sensor, and the control circuit board calculates the position of the motion equipment according to the incremental digital signal and the subdivision signal and outputs a detection signal;
and the magnetic sensor adjusts the number of incremental signals output by the sensing magnet of the magnetic sensor according to the programmable logic configuration of the control circuit board.
2. The incremental electromagnetic encoder according to claim 1, wherein a phase difference angle value is preset in the control circuit board, the increment signal of the magnetic sensor comprises a first increment signal and a second increment signal, and the first increment signal and the second increment signal are square wave signals with a phase difference equal to the preset phase difference angle value.
3. An incremental electromagnetic encoder according to claim 2, wherein the phase difference between the first incremental signal and the second incremental signal is taken as a direction signal of the moving device.
4. An incremental electromagnetic encoder according to claim 2, wherein said magnetic sensor senses the magnetic flux of said magnet, and the relative position of the magnet and the magnetic sensor at the time of the maximum magnetic flux is used as a reference origin for calibration of the magnet and the magnetic sensor.
5. The incremental electromagnetic encoder according to any one of claims 2 to 4, further comprising a counter, wherein the counter is connected to a signal output terminal of the control circuit board.
6. The incremental electromagnetic encoder according to claim 1, wherein the operating voltage of the incremental encoder is 5-30V DC voltage.
7. An incremental electromagnetic encoder according to claim 1, wherein said magnetic sensor is provided with an electronic soft switch for switching the form and voltage amplitude of the output signal of the magnetic sensor.
8. The incremental electromagnetic encoder of claim 7, wherein said output signals comprise TTL signals, HTL signals, open drain signals, and differential signals.
9. The incremental electromagnetic encoder according to claim 1, wherein a direction discriminating circuit is further provided in the incremental electromagnetic encoder for discriminating a rotation direction of a rotating shaft of a moving device.
10. The incremental electromagnetic encoder according to claim 1, wherein a signal splitting circuit is disposed at the control circuit board, and the detection signal output by the control circuit board is split into at least two paths by the signal splitting circuit and is provided for an external device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249911.4A CN114199286A (en) | 2021-10-26 | 2021-10-26 | Incremental electromagnetic encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249911.4A CN114199286A (en) | 2021-10-26 | 2021-10-26 | Incremental electromagnetic encoder |
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| CN114199286A true CN114199286A (en) | 2022-03-18 |
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Citations (7)
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| CN101750102A (en) * | 2009-12-24 | 2010-06-23 | 浙江中控电气技术有限公司 | Magnetoelectric rotating encoder and magnetoelectric angle-rotating measuring method |
| CN101788306A (en) * | 2010-03-10 | 2010-07-28 | 连云港杰瑞电子有限公司 | Digital self-adaption shaft angle signal-digital converter |
| CN101858757A (en) * | 2009-04-09 | 2010-10-13 | 武汉迈信电气技术有限公司 | Device and method being capable of changing output line number of encoder |
| CN102818581A (en) * | 2012-07-12 | 2012-12-12 | 武汉迈信电气技术有限公司 | Incremental encoder based on rotary transformer |
| JP2013134068A (en) * | 2011-12-26 | 2013-07-08 | Nidec Sankyo Corp | Encoder device and signal generation method for encoder device |
| CN103292832A (en) * | 2012-02-24 | 2013-09-11 | 赐福科技股份有限公司 | Motor absolute position recording device |
| CN112556732A (en) * | 2020-11-19 | 2021-03-26 | 珠海格力电器股份有限公司 | Magnetoelectric angle sensor, encoder and motor |
-
2021
- 2021-10-26 CN CN202111249911.4A patent/CN114199286A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858757A (en) * | 2009-04-09 | 2010-10-13 | 武汉迈信电气技术有限公司 | Device and method being capable of changing output line number of encoder |
| CN101750102A (en) * | 2009-12-24 | 2010-06-23 | 浙江中控电气技术有限公司 | Magnetoelectric rotating encoder and magnetoelectric angle-rotating measuring method |
| CN101788306A (en) * | 2010-03-10 | 2010-07-28 | 连云港杰瑞电子有限公司 | Digital self-adaption shaft angle signal-digital converter |
| JP2013134068A (en) * | 2011-12-26 | 2013-07-08 | Nidec Sankyo Corp | Encoder device and signal generation method for encoder device |
| CN103292832A (en) * | 2012-02-24 | 2013-09-11 | 赐福科技股份有限公司 | Motor absolute position recording device |
| CN102818581A (en) * | 2012-07-12 | 2012-12-12 | 武汉迈信电气技术有限公司 | Incremental encoder based on rotary transformer |
| CN112556732A (en) * | 2020-11-19 | 2021-03-26 | 珠海格力电器股份有限公司 | Magnetoelectric angle sensor, encoder and motor |
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