CN220960113U - Photoelectric incremental encoder module integrated with light source - Google Patents
Photoelectric incremental encoder module integrated with light source Download PDFInfo
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- CN220960113U CN220960113U CN202323065108.2U CN202323065108U CN220960113U CN 220960113 U CN220960113 U CN 220960113U CN 202323065108 U CN202323065108 U CN 202323065108U CN 220960113 U CN220960113 U CN 220960113U
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Abstract
The utility model discloses a photoelectric incremental encoder module of an integrated light source, which comprises the following components: the chip carrier plate, the light guide unit arranged above the chip carrier plate, and the code disc arranged between the light guide units; the chip carrier plate includes: the packaging substrate, the point light source chip arranged at one end of the packaging substrate, the encoder chip arranged at the other end of the packaging substrate, and a plurality of pins arranged at two sides of the packaging substrate; the light guide unit includes: a first mirror disposed over the point light source chip, and a second mirror disposed over the encoder chip. In the utility model, the point light source chip and the encoder chip are integrated on the same chip carrier plate, so that the structure of the traditional photoelectric incremental encoder is simplified, the processing is simple, the structure is stable, the processes of insert injection molding and the like are omitted, the automatic processing degree is high, and the production efficiency is improved; meanwhile, the reliability of the product is improved.
Description
Technical Field
The utility model relates to the technical field of incremental encoders, in particular to a photoelectric incremental encoder module integrated with a light source.
Background
The encoder is a device for measuring the position of a rotating shaft or linear motion, can convert the position information of an object into electric signals, and can realize accurate control and monitoring of a moving part of the object by analyzing the electric signals; according to different application scenes, the method is further divided into an absolute encoder and an incremental encoder, wherein the incremental encoder has higher resolution, can improve very fine position measurement, and is commonly used in the fields of robot control, motor control, position feedback and the like in modern industry; according to the different working principles, the photoelectric encoder and the magneto-electric encoder are also divided.
Photoelectric encoders typically include a photoelectric sensor, a code wheel, and a light source; when the code disc rotates or moves linearly, the light of the light source irradiates the code disc, and intensity change can be generated according to the design of the code disc; the photosensor detects the intensity change of the light and converts it into electrical signals, which are processed and decoded by the encoder's circuitry to determine positional information of the rotational axis or linear motion.
Prior art CN218822427U discloses an incremental encoder module comprising: the light source assembly comprises a base body and a light source, wherein the base body comprises a base body and a first connecting piece connected with the base body, and the light source is arranged on the base body and is electrically connected with the first connecting piece; the light transmission piece is arranged at one side of the light source and is connected with the light source component; the receiving assembly is arranged on one side of the light source assembly and comprises a base and a photosensitive element arranged on the base, at least part of the base is connected with the base body, and the photosensitive element is suitable for receiving light rays of the light source and transmitting the light rays to the electric control part; the base comprises a base body and a second connecting piece connected with the base body, and the photosensitive element is arranged on the base and is electrically connected with the second connecting piece; the light source, the light transmitting member and the photosensitive element are in the same straight line. Compared with the prior art, each part is assembled after being packaged respectively, the assembly step of the incremental encoder module is simpler and more convenient, the assembly precision is high, and the stability is good.
However, the above prior art has the following problems:
(1) In the incremental encoder module, more parts are used for connection and fixation, the redundancy of the device is larger, each connecting piece and each fixing piece are required to be processed by injection molding inserts, and the automation degree is low; meanwhile, as the parts are required to be combined and spliced, high requirements are put on the precision of assembly and processing.
(2) In the incremental encoder module, only the photosensitive element is arranged and used for receiving and sensing the intensity change of light, the generated electric signals are required to be transmitted to an external electric control through electric connection, and a signal processing circuit for carrying out digital signal conversion processing on the electric signals is absent, so that the integration level is reduced, the universality is reduced, and the readability is poor.
(3) In the incremental encoder module, only the light source is arranged on the base, a light source control circuit is absent, the luminous intensity of the light source cannot be adjusted according to the requirement, and the use scene is limited; meanwhile, the lack of a device for integrating light rays can influence the detection accuracy to a certain extent.
Therefore, it is necessary to provide a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides an optoelectronic incremental encoder module integrated with a light source.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an integrated light source optoelectric incremental encoder module comprising: the chip carrier plate, the light guide unit arranged above the chip carrier plate, and the code disc arranged between the light guide units;
the chip carrier plate comprises: the packaging device comprises a packaging substrate, a point light source chip arranged at one end of the packaging substrate, an encoder chip arranged at the other end of the packaging substrate and a plurality of pins arranged at two sides of the packaging substrate;
The light guide unit includes: a first mirror disposed over the point source chip, and a second mirror disposed over the encoder chip.
In a preferred embodiment of the utility model, the code disc is a circular disc, and a plurality of gratings are circumferentially equidistant on the edge of the code disc; the code disc is connected with a rotating shaft of the motor and used for following the motor to move, and the movement state of the code disc is changed along with the movement state of the motor; the gratings are arranged on the horizontal line where the centers of the first reflecting mirror and the second reflecting mirror are positioned, and are used for enabling light to regularly change in intensity when passing through the gratings.
In a preferred embodiment of the present utility model, the encoder chip includes: a photosensitive detector and a signal processing circuit; the photosensitive detector is used for receiving light and converting the intensity change of the light into an electric signal; the signal processing circuit is used for receiving the electric signal generated by the photosensitive detector and converting the electric signal into a digital signal.
In a preferred embodiment of the present utility model, one end of each of the plurality of pins is connected to the encoder chip, and the other end is connected to the decoder; a plurality of pins can transmit the digital signals generated by the encoder chip to the decoder; the decoder is used for converting the digital signals into readable position or speed information, and can compare the signal mode on the code disc with the preset position or speed information so as to determine the motion state of the motor.
In a preferred embodiment of the present utility model, the first reflecting mirror is a parabolic mirror, and a mirror surface of the first reflecting mirror and a horizontal ground are parabolic, so as to convert vertical light generated by the point light source chip into horizontal light; the second reflecting mirror is a plane mirror, and the mirror surface of the second reflecting mirror forms an angle of 45 degrees with the horizontal ground and is used for converting horizontal light into vertical light so as to be fully transmitted to the encoder chip.
In a preferred embodiment of the present utility model, the point light source chip includes: the LED, the light transmission protective shell and the control circuit can emit required light intensity; the point light source chip is connected with a power supply and is used for continuously emitting light; the point light source chip is arranged at the focus of the paraboloid where the first reflecting mirror is located, and can sufficiently collect light rays emitted by the point light source chip to the first reflecting mirror.
In a preferred embodiment of the present utility model, the mirror surface of the first reflecting mirror and the mirror surface of the second reflecting mirror are both coated with a reflecting film, and the reflecting film is made of silver, so as to improve reflectivity, thereby more accurately measuring the light variation passing through the code wheel.
In a preferred embodiment of the present utility model, the first reflecting mirror is connected to a first housing, and the first housing is fixedly connected to the chip carrier; the first shell is arranged around the point light source chip and is used for protecting the point light source chip and the first reflecting mirror.
In a preferred embodiment of the present utility model, the second reflecting mirror is connected to a second housing, and the second housing is fixedly connected to the chip carrier; the second housing is disposed around the encoder chip for protecting the encoder chip and the second mirror.
In a preferred embodiment of the present utility model, the first housing and the second housing are semi-closed housings, and opposite surfaces of the first housing and the second housing are open for light to be transmitted between the first mirror and the second mirror.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
(1) According to the utility model, the point light source chip and the encoder chip are integrated on the chip carrier, so that redundant fixed connecting pieces are omitted, and the redundancy of the device is reduced; the process of insert injection molding and the like is omitted, the processing is simple and convenient, the automatic processing degree is high, and the production efficiency is improved; the structure is simplified, the fixing piece is not required to be spliced and assembled, and the possibility of measuring errors of products due to improper assembly is reduced.
(2) Compared with the prior art, the utility model integrates the photosensitive detector and the signal processing circuit by arranging the encoder chip, has higher integration level and reduces the module volume; the light source can react to the intensity change of light rays, output digital signals, and compared with the electric signals output in the prior art, the light source has better universality and improved readability.
(3) According to the utility model, through the cooperation between the encoder chip and the plurality of pins, digital signals can be conveniently transmitted to the decoder or other circuit elements through the pins, so that the connectivity between the module and other circuit elements is optimized, the expansibility of the module is improved, the application scene is increased, and the popularization and the use are facilitated.
(4) Compared with the prior art, the novel point light source chip is used as a light source, so that the occupied space of the light source can be reduced; the point light source chip is integrated with a control circuit, can emit required light intensity, improves the control reaction speed, and expands the functionality; further, through the cooperation of pointolite chip and first speculum, realized the focusing of light on the paraboloid, can integrate light, strengthen light intensity, saved the energy, make the light change more obvious, can improve and detect the precision.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of a preferred embodiment of the present utility model;
FIG. 2 is a block diagram of a chip carrier in accordance with a preferred embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a preferred embodiment of the present utility model;
In the figure: 101. a first housing; 102. a first mirror; 201. a second housing; 202. a second mirror; 3. a chip carrier; 301. a point light source chip; 302. an encoder chip; 303. pins; 304. packaging a substrate; 4. a motor; 5. and (3) a code disc.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
As shown in fig. 1 and 2, an optoelectronic incremental encoder module for an integrated light source, comprising: a chip carrier plate 3, light guide units arranged above the chip carrier plate 3, and code plates 5 arranged between the light guide units;
The chip carrier 3 includes: a package substrate 304, a point light source chip 301 disposed at one end of the package substrate 304, an encoder chip 302 disposed at the other end of the package substrate 304, and a plurality of pins 303 disposed at both sides of the package substrate 304;
The light guide unit includes: a first mirror 102 disposed over the point light source chip 301, and a second mirror 202 disposed over the encoder chip 302.
In the utility model, the code disc 5 is a circular disc, and a plurality of gratings are circumferentially equidistant on the edge of the code disc 5; the code wheel 5 is connected with a rotating shaft of the motor 4 and is used for following the motor to move, and the movement state of the code wheel 5 is changed along with the movement state of the motor 4; the gratings are disposed on the horizontal lines where the centers of the first mirror 102 and the second mirror 202 are located, so that the light passing through the gratings is regularly changed in intensity.
In the present utility model, the encoder chip 301 includes: a photosensitive detector and a signal processing circuit; the photosensitive detector is used for receiving light and converting the intensity change of the light into an electric signal; the signal processing circuit is used for receiving the electric signal generated by the photosensitive detector and converting the electric signal into a digital signal; one end of each of the pins 303 is connected with the encoder chip 302, and the other end is connected with the decoder; a number of pins capable of transmitting digital signals generated by the encoder chip 302 to a decoder; the decoder is used for converting the digital signal into readable position or speed information, and can compare the signal pattern on the code wheel 5 with the preset position or speed information, so as to determine the motion state of the motor 4.
In the present utility model, the point light source chip 301 includes: the LED, the light transmission protective shell and the control circuit can emit required light intensity; the point light source chip 301 is connected to a power supply for continuously emitting light; the point light source chip 301 is disposed at the focal point of the paraboloid where the first mirror 102 is located, and can sufficiently converge the light emitted from the point light source chip 301 to the first mirror 102.
In the present utility model, the first reflecting mirror 102 is a parabolic mirror, and the mirror surface of the first reflecting mirror 102 is parabolic with the horizontal ground, so as to convert the vertical light generated by the point light source chip 301 into the horizontal light; the second reflecting mirror 202 is a plane mirror, and the mirror surface of the second reflecting mirror 202 forms an angle of 45 degrees with the horizontal plane, so as to convert the horizontal light into the vertical light, and fully transmit the vertical light to the encoder chip 302; the mirror surface of the first mirror 102 and the mirror surface of the second mirror 202 are both coated with a reflective film, and the reflective film is made of silver, so as to improve reflectivity, thereby more accurately measuring the change of light passing through the code wheel 5.
As shown in fig. 3, the first reflecting mirror 102 is connected with the first housing 101, and the first housing 101 is fixedly connected with the chip carrier plate 3; the first case 101 is disposed around the point light source chip 301 for protecting the point light source chip 301 and the first reflecting mirror 102; the second reflecting mirror 202 is connected with the second shell 201, and the second shell 201 is fixedly connected with the chip carrier plate 3; the second housing 201 is disposed around the encoder chip 302 for protecting the encoder chip 302 and the second mirror 202; the first housing 101 and the second housing 201 are semi-closed housings, and opposite surfaces of the first housing 101 and the second housing 201 are open for light to be transmitted between the first mirror 102 and the second mirror 202.
When the utility model is used, the code wheel 5 is arranged on the rotating shaft of the motor 4, and the code wheel 5 can rotate along with the motor 4; the code wheel 5 is arranged between the first shell 101 and the second shell 102, so that the grating on the code wheel 5 is located at the middle position of the first reflecting mirror 102 and the second reflecting mirror 202; at this time, the point light source chip 301 emits light, and the light is focused and reflected by the first reflecting mirror 102, and then the light changes from the vertical direction to the horizontal direction, and reaches the code wheel 5; when light passes through the code disc 5, the light can rotate along with the code disc 5 due to the grating arranged on the code disc 5, so that the intensity change is generated; the changed light beam reaches the encoder chip 302 after being reflected by the second reflecting mirror 202, and is received by the encoder chip 302 to generate a digital signal; the digital signal is transmitted to the decoder through a plurality of pins 303, and after reverse analysis by the decoder, the intensity change of the light can be obtained, so that the information of the motion state, the position and the like of the motor 4 can be obtained.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. An integrated light source optoelectric incremental encoder module comprising: chip carrier plate (3), set up the light guide unit of chip carrier plate (3) top to and set up code wheel (5) between the light guide unit, its characterized in that:
The chip carrier plate (3) comprises: a package substrate (304), a point light source chip (301) disposed at one end of the package substrate (304), an encoder chip (302) disposed at the other end of the package substrate (304), and a plurality of pins (303) disposed at both sides of the package substrate (304);
The light guide unit includes: a first mirror (102) disposed over the point light source chip (301), and a second mirror (202) disposed over the encoder chip (302).
2. An integrated optical source optoelectric incremental encoder module of claim 1 wherein: the code disc (5) is a circular disc, and a plurality of gratings are circumferentially equidistant on the edge of the code disc (5); the code wheel (5) is connected with a rotating shaft of the motor (4), and a plurality of gratings are arranged on a horizontal line where the centers of the first reflecting mirror (102) and the second reflecting mirror (202) are located.
3. An integrated optical source optoelectric incremental encoder module of claim 2 wherein: the encoder chip (302) comprises: a photosensitive detector and a signal processing circuit; the photosensitive detector is used for receiving light rays and converting the change of the light rays into signals; the signal processing circuit is used for receiving the signals generated by the photosensitive detector and converting the signals into digital signals.
4. An integrated optical source optoelectric incremental encoder module of claim 1 wherein: and one ends of the pins (303) are connected with the encoder chip (302), and the other ends are connected with a decoder.
5. An integrated optical source optoelectric incremental encoder module of claim 1 wherein: the first reflecting mirror (102) is a parabolic mirror, and the mirror surface of the first reflecting mirror (102) and the horizontal ground are parabolic; the second reflecting mirror (202) is a plane mirror, and the mirror surface of the second reflecting mirror (202) forms an angle of 45 degrees with the horizontal ground.
6. An integrated optical source optoelectric incremental encoder module of claim 5 wherein: the point light source chip (301) includes: an LED, a light transmissive protective housing, and a control circuit; the point light source chip (301) is connected with a power supply; the point light source chip (301) is disposed at a focal point of a paraboloid in which the first reflecting mirror (102) is located.
7. An integrated optical source optoelectric incremental encoder module of claim 1 wherein: the mirror surface of the first reflecting mirror (102) and the mirror surface of the second reflecting mirror (202) are plated with reflecting films, and the reflecting films are made of silver.
8. An integrated optical source optoelectric incremental encoder module of claim 1 wherein: the first reflecting mirror (102) is connected with the first shell (101), and the first shell (101) is fixedly connected with the chip carrier plate (3); the first housing (101) is disposed around the point light source chip (301).
9. An integrated optical source optoelectric incremental encoder module of claim 8 wherein: the second reflecting mirror (202) is connected with the second shell (201), and the second shell (201) is fixedly connected with the chip carrier plate (3); the second housing (201) is arranged around the encoder chip (302).
10. An integrated optical source optoelectric incremental encoder module of claim 9 wherein: the first shell (101) and the second shell (201) are semi-closed shells, and opposite surfaces of the first shell (101) and the second shell (201) are open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323065108.2U CN220960113U (en) | 2023-11-14 | 2023-11-14 | Photoelectric incremental encoder module integrated with light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323065108.2U CN220960113U (en) | 2023-11-14 | 2023-11-14 | Photoelectric incremental encoder module integrated with light source |
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| Publication Number | Publication Date |
|---|---|
| CN220960113U true CN220960113U (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202323065108.2U Active CN220960113U (en) | 2023-11-14 | 2023-11-14 | Photoelectric incremental encoder module integrated with light source |
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| CN (1) | CN220960113U (en) |
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- 2023-11-14 CN CN202323065108.2U patent/CN220960113U/en active Active
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