Visual encoder system

Abstract

The invention discloses a visual encoder system, which relates to the technical field of encoders, and comprises an encoding disc provided with transparent and opaque scales; the photoelectric detector is used for detecting the scale change on the coding disc and outputting a pulse signal; the data processing module is used for receiving and processing the pulse signal so as to generate position or angle information of the measured object; and the environment adaptation module is used for improving the measurement precision of the system under dust, oil stain and vibration conditions. By providing the coding disc, the photoelectric detector, the data processing module and the environment adaptation module, the problem that the measurement precision of the visual encoder system is reduced in dust, oil stain and vibration environments is solved.

Description

Technical Field

[0001] The present invention relates to the field of encoder technology, and in particular to a visual encoder system. Background Art

[0002] Visual encoder systems are often used in various scenarios that require high-precision positioning and measurement, such as industrial automation, robotics, and other electromechanical equipment. They use optical sensors and encoding technology to obtain information such as the position, speed, and angle of an object to achieve precise control and feedback.

[0003] Optical encoders are the most common visual encoder systems, which use grating encoder disks and photodetectors to measure position and speed. The encoder disk is engraved with transparent and opaque scales. Through the change of the scales during rotation, the photodetector can detect whether light passes through or not, thereby outputting a pulse signal. After processing, these pulse signals can accurately represent the position or angle of the object being measured. However, optical encoders have high requirements for the environment, especially being sensitive to dust, vibration and other factors, which limits their application in certain harsh environments.

[0004] Many traditional vision encoder systems, such as optical encoders, are sensitive to environmental factors such as dust, oil, and vibration, which can easily lead to measurement errors or system failures.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The object of the present invention is to provide a visual encoder system to solve the problems raised in the above background technology.

[0007] To solve the above technical problems, the present invention provides a visual encoder system, including: a coding disk, on which transparent and opaque scales are provided; a photodetector, used to detect scale changes on the coding disk and output a pulse signal; a data processing module, used to receive and process the pulse signal to generate position or angle information of the object being measured; and an environmental adaptation module, used to improve the measurement accuracy of the system under dust, oil and vibration conditions.

[0008] In one possible embodiment, the environmental adaptation module includes: a dustproof device for preventing dust from entering the working area of ​​the encoding disk and the photodetector; an oil-proof device for preventing oil from covering the surface of the encoding disk or the photodetector; wherein the oil-proof device includes a protective cover, a sealing ring and a connecting mechanism; the protective cover is made of a transparent or translucent material, covering the surface of the encoding disk or the photodetector to form a closed or semi-closed space to prevent the invasion of oil; the sealing ring is arranged at the edge of the protective cover, between the protective cover and the encoding disk or the photodetector, and the close contact between the sealing ring and the protective cover prevents oil from penetrating from the contact surface; the connecting mechanism includes a group of fixings, which connect the protective cover and the outer shell of the encoding disk or the photodetector to ensure the stable installation of the protective cover.

[0009] In one possible embodiment, the dustproof device includes a dust cover and an automatic cleaning mechanism; the dust cover covers the encoding disk and the photodetector to form a closed or semi-closed protective space to prevent the intrusion of dust and other contaminants; the automatic cleaning mechanism is integrated in the dust cover and has a set of cleaning components; the cleaning components include brushes, scrapers or micro air flow nozzles, which are driven by a driving mechanism to move the cleaning components on the inner surface of the dust cover or on the surface close to the encoding disk and the photodetector to remove attached dust; the driving mechanism uses a motor, a spring mechanical device or a pneumatic device to drive the cleaning component to start the cleaning process periodically or according to the sensor signal, thereby ensuring the cleanliness of the surface of the encoding disk and the photodetector and maintaining the accuracy and stability of the visual encoder system.

[0010] In a possible implementation, the anti-oil device includes an anti-oil coating applied on the surface of the encoding disk and the photodetector to reduce the adhesion of oil.

[0011] In a possible implementation manner, the environmental adaptation module further includes a vibration compensation device for reducing the impact of vibration on the encoding disk and the photodetector, thereby improving the measurement stability of the system.

[0012] In one possible embodiment, the visual encoder system includes a vibration compensation device, which includes: an elastic support structure, which is installed at the supporting parts of the encoding disk and the photodetector, and is used to absorb vibrations caused by the external environment to reduce the impact of vibrations on the measurement accuracy of the encoder system; the elastic support structure is composed of a plurality of elastic elements, and the elastic elements are arranged at a plurality of supporting points between the encoding disk and the photodetector, and each elastic element can independently absorb and attenuate vibrations from different directions, thereby effectively maintaining the relative position accuracy between the encoding disk and the photodetector; the vibration compensation device also includes a flexible connector and a fixed structure, and the flexible connector is used to connect the encoding disk and the photodetector, so that when the elastic support structure absorbs vibrations, the encoding disk and the photodetector can A small displacement is generated under the premise of maintaining a stable relative position; the fixed structure includes a fixing seat installed on the encoding disk and the photodetector, and the fixing seat is used to fix the two ends of the elastic support structure on the corresponding supporting parts of the encoding disk and the photodetector respectively, and the fixed structure is connected to the elastic support structure through a flexible connector to ensure that the vibration energy is fully absorbed and attenuated when passing through the elastic support structure; the material of the elastic support structure is rubber or polymer elastomer material, which can maintain its shock absorption effect during long-term use; the vibration compensation device can also include more than one pair of shock absorbers, which are arranged at the connection between the elastic support structure and the encoding disk or the photodetector, so as to further reduce the transmission of high-frequency vibrations and ensure the stability and measurement accuracy of the visual encoder system in various working environments.

[0013] In a possible implementation, the scale of the encoding disk is made of a high-contrast material to enhance the recognition accuracy of the photoelectric detector.

[0014] In a possible implementation, the surface of the encoding disk is subjected to anti-reflection treatment to reduce interference of external light on pulse signal detection.

[0015] In one possible implementation, the photodetector includes a multi-photoelectric sensor array to improve the resolution and anti-interference capability of the system.

[0016] In one possible implementation, a measurement method for a visual encoder system is provided. Based on the above-mentioned visual encoder system, the method includes: detecting scale changes of the encoding disk to generate a pulse signal; processing the pulse signal to obtain position or angle information of the object being measured; and reducing the impact of environmental factors on measurement accuracy through the dustproof, oil-proof and vibration compensation functions of the environmental adaptation module.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention generates pulse signals by setting transparent and opaque scales through the encoding disk, combined with the principle of detecting scale changes by a photoelectric detector. The data processing module processes these pulse signals into specific position information or angle information. In order to maintain measurement accuracy under harsh environmental conditions, the environmental adaptation module uses specific devices to deal with interference from dust, oil and vibration to ensure accurate transmission and processing of signals. Through the environmental adaptation module, the system can effectively resist the influence of dust, oil and vibration, thereby improving the stability and accuracy of the measurement. This allows the system to work reliably in a variety of complex environments. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The visual encoder system includes: an encoding disk, a photodetector, a data processing module and an environmental adaptation module. The encoding disk is provided with transparent and opaque scales. The photodetector is used to detect the scale changes on the encoding disk and output a pulse signal. The data processing module is used to receive and process the pulse signal to generate the position or angle information of the object being measured. The environmental adaptation module is used to improve the measurement accuracy of the system under dust, oil and vibration conditions. The pulse signal is generated by combining the transparent and opaque scales of the encoding disk with the principle of detecting scale changes by the photodetector. The data processing module processes these pulse signals into specific position information or angle information. In order to maintain measurement accuracy under harsh environmental conditions, the environmental adaptation module uses specific devices to deal with the interference of dust, oil and vibration to ensure accurate transmission and processing of signals. Through the environmental adaptation module, the system can effectively resist the influence of dust, oil and vibration, thereby improving the stability and accuracy of measurement. This enables the system to work reliably in a variety of complex environments.

[0021] In other embodiments, the material of the encoding disk, the type of photodetector, or the algorithm of the data processing module can be replaced or adjusted according to application requirements. For example, the encoding disk can be made of other high-contrast materials or a special coating can be added to the surface of the encoding disk to further enhance the anti-interference ability of the system.

[0022] Specifically, the data processing method is carried out in the following way;

[0023] Steps for selecting the material of the encoder disk: According to the anti-interference requirements of the system, select the material of the encoder disk, including but not limited to high-contrast materials or materials with special coatings;

[0024] Signal detection step: detecting the scale lines on the encoding disk by a photoelectric detector and generating a corresponding photoelectric signal, wherein the type of the photoelectric detector is adjusted according to the application requirements, including but not limited to CMOS or CCD type detectors;

[0025] Signal enhancement step: preprocessing the photoelectric signal to enhance the signal's anti-interference ability, the preprocessing includes but is not limited to filtering, amplification and noise suppression;

[0026] Signal decoding step: digitally process the enhanced photoelectric signal to decode the position information of the encoder disk;

[0027] Position calculation step: according to the decoded signal, a specific algorithm is used to calculate the rotation angle or displacement of the encoder disk, and the algorithm includes but is not limited to an interpolation algorithm, a fast Fourier transform (FFT) algorithm or an adaptive filtering algorithm;

[0028] Feedback adjustment step: According to the calculated position information, the parameters of the photoelectric detector or the algorithm of the data processing module are adjusted in real time to further improve the accuracy and anti-interference ability of the system.

[0029] As a preferred case, the environmental adaptation module includes a dustproof device and an oil-proof device. The dustproof device is used to prevent dust from entering the working area of ​​the code disk and the photoelectric detector. The oil-proof device is used to prevent oil from covering the surface of the code disk or the photoelectric detector. The oil-proof device includes a protective cover, a sealing ring and a connecting mechanism. The protective cover is made of transparent or translucent material, covering the surface of the code disk or the photoelectric detector, forming a closed or semi-closed space to prevent the invasion of oil. The sealing ring is arranged at the edge of the protective cover, located between the protective cover and the code disk or the photoelectric detector, and the oil is prevented from penetrating from the contact surface through the close contact between the sealing ring and the protective cover. The connecting mechanism includes a set of fixings, which connect the protective cover with the outer shell of the code disk or the photoelectric detector to ensure the stable installation of the protective cover. The environmental adaptation module effectively avoids the influence of dust and oil on the code disk and the photoelectric detector through the synergistic effect of the dustproof device and the oil-proof device. The design of the protective cover and the sealing ring ensures that external pollutants cannot easily penetrate, keeps the working environment of the code disk and the photoelectric detector clean, and thus ensures the accurate detection of the pulse signal. The dustproof device and the oil-proof device greatly reduce the impact of dust and oil on the visual encoder system, further improving the reliability and measurement accuracy of the system. Especially in industrial environments, this design can extend the service life of the system and reduce maintenance requirements. In other embodiments, the material of the protective cover can select different transparent or translucent materials, such as anti-static materials, to further reduce the interference of static electricity on the photodetector. In addition, the material of the sealing ring can also be selected from materials with different elasticity according to needs to adapt to different working environments.

[0030] Specifically, the dustproof device includes a dustproof cover and an automatic cleaning mechanism.

[0031] The dust cover covers the encoder and photoelectric detector to form a closed or semi-closed protective space to prevent the intrusion of dust and other contaminants. The automatic cleaning mechanism is integrated in the dust cover and has a set of cleaning components. The cleaning components include brushes, scrapers or micro airflow nozzles, which are driven by the driving mechanism to move the cleaning components on the inner surface of the dust cover or near the surface of the encoder and photoelectric detector to remove the attached dust. The driving mechanism uses a motor, spring mechanical device or pneumatic device to drive the cleaning component to start the cleaning process periodically or according to the sensor signal, thereby ensuring the cleanliness of the surface of the encoder and photoelectric detector and maintaining the accuracy and stability of the visual encoder system. The dustproof device forms an effective protective barrier through the use of the dust cover and the automatic cleaning mechanism to prevent dust from entering the core area of ​​the system. Driven by the driving mechanism, the cleaning component automatically cleans the surface attachments to ensure that the system continues to work in the best condition.

[0032] The shape and material of the dust cover can be adjusted according to different use environments, such as using high temperature resistant materials to adapt to extreme temperature conditions. The driving mode of the automatic cleaning mechanism can also choose different power sources according to actual needs, such as hydraulic devices or more precise servo motors.

[0033] As a preferred case, the anti-oil device includes an anti-oil coating, which is applied to the surface of the encoder disk and the photodetector to reduce the adhesion of oil. The anti-oil coating significantly reduces the adhesion of oil on these surfaces by forming an anti-oil protective layer on the surface of the encoder disk and the photodetector. This coating usually has hydrophobic and oleophobic properties, which can make oil and other contaminants slide off the surface more easily, thereby keeping the surface of the encoder disk and the photodetector clean and ensuring the accuracy of pulse signal detection. The anti-oil coating effectively delays the accumulation of oil, reduces the frequency of regular cleaning and maintenance costs, and ensures the measurement accuracy of the visual encoder system in long-term use. The application of this coating is particularly suitable for industrial environments that require frequent contact with oil.

[0034] Specifically, different types of anti-oil coating materials can be selected to adapt to different working environments. For example, in a high temperature environment, a high temperature resistant anti-oil coating material can be used. In addition, the thickness of the coating and the coating process can also be adjusted according to actual needs to optimize the performance and service life of the coating.

[0035] Specifically, the environmental adaptation module also includes a vibration compensation device, which is used to reduce the impact of vibration on the encoder disk and the photodetector, thereby improving the measurement stability of the system. The vibration compensation device effectively absorbs vibrations in the external environment by adopting a special structural design, such as an elastic support structure, and reduces the impact of these vibrations on the encoder disk and the photodetector. This design can stabilize the relative position of the encoder disk and the photodetector, thereby ensuring that in a vibrating environment, the system can still accurately detect scale changes and generate stable pulse signals. The vibration compensation device of the present application greatly enhances the stability of the visual encoder system in a vibrating environment, ensures the continuity and accuracy of the measurement, reduces the interference of external vibrations on the system measurement results, and thus improves the reliability of the system.

[0036] As a preferred case, the vibration compensation device includes an elastic support structure, a flexible connector and a fixed structure. The elastic support structure is installed at the supporting parts of the encoding disk and the photodetector to absorb vibrations caused by the external environment. The elastic support structure is composed of a plurality of elastic elements, which are arranged at a plurality of supporting points between the encoding disk and the photodetector. Each elastic element can independently absorb and attenuate vibrations from different directions, thereby effectively maintaining the relative position accuracy between the encoding disk and the photodetector. The flexible connector is used to connect the encoding disk and the photodetector, so that when the elastic support structure absorbs vibrations, the encoding disk and the photodetector can produce a small displacement while maintaining a stable relative position.

[0037] The fixed structure includes a fixing seat mounted on the encoding disk and the photodetector, and the fixing seat is used to fix the two ends of the elastic support structure on the corresponding supporting parts of the encoding disk and the photodetector respectively, and the fixed structure is connected to the elastic support structure through a flexible connector to ensure that the vibration energy is fully absorbed and attenuated when passing through the elastic support structure. The elastic support structure of the vibration compensation device absorbs and attenuates the vibration caused by the external environment through the joint action of multiple elastic elements. The flexible connector allows a certain relative displacement between the encoding disk and the photodetector during the vibration absorption process, thereby avoiding the influence of vibration on the measurement results while maintaining the overall stability of the system. The design of the fixed structure ensures that by using the elastic support structure and the flexible connector, the vibration compensation device can effectively reduce the influence of high-frequency vibration and improve the measurement accuracy and stability of the visual encoder system. This design is particularly suitable for use in vibration environments that require high-precision measurements, such as heavy industry or mechanical processing.

[0038] The elastic elements in the elastic support structure can be selected according to different application requirements, such as using rubber with different hardness or special elastic materials to adapt to different vibration frequencies. The design of the fixed structure can also be adjusted according to the installation method of the equipment, such as using different types of fixing seats or installation methods to meet the use requirements under different working conditions.

[0039] Specifically, the scale of the encoder disk uses high-contrast materials to enhance the recognition accuracy of the photodetector. By using high-contrast materials on the scale of the encoder disk, the photodetector can more easily distinguish changes in transparent and opaque areas, thereby generating clearer pulse signals. This high-contrast design reduces recognition errors caused by changes in ambient light and improves the overall measurement accuracy of the system.

[0040] The use of high-contrast materials enhances the readability of the encoder disk, allowing the photodetector to maintain high-precision measurement capabilities under various lighting conditions. This design effectively improves the system's anti-interference ability, especially in complex light environments. High-contrast materials can choose different types of coatings or coating processes, such as using highly reflective metal coatings or anti-reflection treated optical materials to further optimize the readability of the encoder disk and the measurement accuracy of the system.

[0041] As a preferred example, the surface of the encoder disk is treated with anti-reflection to reduce the interference of external light on pulse signal detection. By performing anti-reflection treatment on the surface of the encoder disk, the possibility of ambient light reflecting into the photodetector can be effectively reduced, thereby reducing the generation of noise signals. Anti-reflection treatment usually uses special coatings or surface structure designs to make the photodetector more accurate in detecting scale changes and avoid measurement errors caused by light interference.

[0042] Anti-reflection processing significantly improves the signal detection accuracy of the visual encoder system, allowing the system to maintain stable operation in environments with frequent lighting changes. This design increases the adaptability of the system, especially under strong light or variable lighting conditions, and can effectively reduce errors and noise signals.

[0043] Specifically, the photodetector includes a multi-photoelectric sensor array to improve the resolution and anti-interference capability of the system.

[0044] By using a multi-photoelectric sensor array design in the photodetector, multiple scale change signals on the encoder disk can be detected simultaneously, thereby improving the resolution of the system. The design of the multi-sensor array can also be used for signal redundancy and cross-validation.

[0045] The multi-photoelectric sensor array significantly improves the resolution of the visual encoder system, enabling it to detect scale changes more precisely. At the same time, the enhanced anti-interference ability ensures that the system remains highly reliable and accurate in complex environments.

[0046] A measurement method for a visual encoder system includes detecting scale changes of an encoding disk to generate a pulse signal; and processing the pulse signal to obtain a measured object.

[0047] Specifically, the measurement method used for the visual encoder system includes the following:

[0048] Detect the scale change of the encoder disk:

[0049] The encoder disk in the visual encoder system rotates with the movement of the object being measured. The encoder disk is designed with transparent and opaque scales, which will pass through the detection area of ​​the photodetector when the encoder disk rotates.

[0050] The photodetector emits a light beam and receives the light passing through the transparent scale of the encoder disk, generating a pulse signal related to the rotation angle or position of the encoder disk. The transparent scale allows the light beam to pass through, while the opaque scale blocks the light beam, thereby generating a pulse signal in the photodetector.

[0051] The environmental adaptation modules in the system work simultaneously to ensure that dust, oil and vibration do not affect the signal detection process of the photodetector. For example, the dustproof device prevents dust from entering, the oil-proof device prevents oil from covering the detector surface, and the vibration compensation device reduces the impact of external vibration on signal detection.

[0052] Generate a pulse signal:

[0053] The photodetector generates a series of pulse signals when it detects changes in the scale of the encoder disk. Whenever the light beam is blocked by an opaque scale or passes through a transparent scale, the photodetector generates a corresponding electrical signal, which is converted into a pulse signal output.

[0054] The generated pulse signal is directly related to the rotation angle or position change of the encoder disk, and the frequency or number of the pulse signal can reflect the rotation speed of the encoder disk or the position change of the object being measured.

[0055] Process the pulse signal to obtain the position or angle information of the object being measured:

[0056] The pulse signals are transmitted to the data processing module, which analyzes and processes these pulse signals through algorithms to calculate the current position or angle information of the object being measured.

[0057] The data processing module may use counting, filtering and interpolation algorithms to accurately analyze the pulse signal, eliminate possible signal noise, and ensure that the output position information or angle information has high accuracy and stability.

[0058] If the system includes a multi-photoelectric sensor array, the data processing module will perform a comprehensive analysis of the output signals of multiple photoelectric detectors to further improve the measurement resolution and anti-interference ability.

[0059] Reduce the impact of environmental factors on measurement accuracy through the functions of the environmental adaptation module:

[0060] The function of the dustproof device is to prevent external dust from entering the working area of ​​the encoder disk and the photoelectric detector, and prevent dust from interfering with signal detection.

[0061] The anti-oil device ensures that the surface of the encoder and photoelectric detector is not affected by oil, avoiding signal attenuation or error caused by oil coverage. The anti-oil coating further reduces oil adhesion and improves surface cleanliness.

[0062] The vibration compensation device absorbs and attenuates external vibrations through elastic support structures and shock absorbers, maintains the relative position of the encoder disk and the photoelectric detector stable, and prevents measurement errors caused by vibration.

[0063] The surface of the encoding disk has been treated with anti-reflection to reduce the interference of ambient light on the photodetector and further improve the measurement accuracy.

[0064] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A visual encoder system, characterized in that: include: A code disk with transparent and opaque scales; Photoelectric detector, used to detect the scale changes on the encoder disk and output pulse signals; Data processing module, used to receive and process pulse signals to generate position or angle information of the object being measured; Environmental adaptation module, used to improve the measurement accuracy of the system under dust, oil and vibration conditions.

2. The visual encoder system according to claim 1, characterized in that The environmental adaptation module includes: a dust-proof device for preventing dust from entering the working area of ​​the encoder disk and the photoelectric detector; Anti-oil device, used to prevent oil from covering the surface of the encoder disk or photoelectric detector; Among them, the oil pollution prevention device includes a protective cover, a sealing ring and a connecting mechanism; The protective cover is made of a transparent or translucent material and covers the surface of the encoding disk or the photoelectric detector to form a closed or semi-closed space to prevent the intrusion of oil stains; The sealing ring is arranged at the edge of the protective cover, between the protective cover and the encoding disk or the photoelectric detector, and the sealing ring is in close contact with the protective cover to prevent oil and dirt from penetrating from the contact surface; The connection mechanism includes a group of fixing parts, which connect the protective cover and the housing of the encoding disk or the photoelectric detector to ensure stable installation of the protective cover.

3. The visual encoder system according to claim 2, characterized in that The dust-proof device includes a dust cover and an automatic cleaning mechanism; The dust cover covers the encoder disk and the photoelectric detector to form a closed or semi-closed protective space to prevent the intrusion of dust and other pollutants; The automatic cleaning mechanism is integrated into the dust cover and has a set of cleaning components; The cleaning component includes a brush, a scraper or a micro airflow nozzle, and the driving mechanism drives the cleaning component to move on the inner surface of the dust cover or the surface close to the encoder disk and the photoelectric detector to remove the attached dust; The driving mechanism adopts a motor, a spring mechanical device or a pneumatic device to drive the cleaning component to start the cleaning process periodically or according to the sensor signal, thereby ensuring the cleanliness of the surface of the encoding disk and the photoelectric detector and maintaining the accuracy and stability of the visual encoder system.

4. The visual encoder system according to claim 2, characterized in that The oil pollution prevention device includes: Anti-oil coating, applied on the surface of the encoder disk and photoelectric detector, is used to reduce the adhesion of oil.

5. The visual encoder system according to claim 1, characterized in that The acclimatization module also includes: The vibration compensation device is used to reduce the impact of vibration on the encoder disk and photoelectric detector, thereby improving the measurement stability of the system.

6. The visual encoder system according to claim 5, characterized in that The visual encoder system includes a vibration compensation device, and the vibration compensation device includes: An elastic support structure, which is installed at the supporting part of the encoder disk and the photoelectric detector and is used to absorb vibration caused by the external environment to reduce the influence of vibration on the measurement accuracy of the encoder system; The elastic support structure is composed of a plurality of elastic elements, which are arranged at a plurality of supporting points between the encoding disk and the photoelectric detector, and each elastic element can independently absorb and attenuate vibrations from different directions, thereby effectively maintaining the relative position accuracy between the encoding disk and the photoelectric detector; The vibration compensation device further comprises a flexible connector and a fixed structure, wherein the flexible connector is used to connect the encoding disk and the photoelectric detector, so that when the elastic support structure absorbs vibration, the encoding disk and the photoelectric detector can produce a small displacement while maintaining a stable relative position; The fixing structure includes a fixing seat mounted on the code disk and the photoelectric detector, the fixing seat is used to fix the two ends of the elastic support structure on the corresponding supporting parts of the code disk and the photoelectric detector respectively, and the fixing structure is connected to the elastic support structure through a flexible connector to ensure that the vibration energy is fully absorbed and attenuated when passing through the elastic support structure; The elastic support structure is made of rubber or high molecular elastomer material, which can maintain its shock absorption effect during long-term use; The vibration compensation device may also include one or more shock absorbers, which are arranged at the connection between the elastic support structure and the encoding disk or photodetector to further reduce the transmission of high-frequency vibrations and ensure the stability and measurement accuracy of the visual encoder system in various working environments.

7. The visual encoder system according to claim 1, characterized in that The scale of the encoder disk is made of high-contrast material to enhance the recognition accuracy of the photoelectric detector.

8. The visual encoder system according to claim 7, characterized in that The surface of the encoder disk is treated with anti-reflection to reduce the interference of external light on pulse signal detection.

9. The visual encoder system according to claim 1, characterized in that The photodetector includes a multi-photosensor array to improve the resolution and anti-interference ability of the system.

10. A measurement method for a visual encoder system, based on the visual encoder system according to any one of claims 1 to 9, characterized in that: The method includes: Detect the scale change of the encoding disk and generate a pulse signal; Process the pulse signal to obtain the position or angle information of the object being measured; The dust-proof, oil-proof and vibration compensation functions of the environmental adaptation module can reduce the impact of environmental factors on measurement accuracy.