CN212458410U

CN212458410U - Diffuse reflection photoelectric sensor capable of resisting ambient light interference

Info

Publication number: CN212458410U
Application number: CN202021053227.XU
Authority: CN
Inventors: 王慧
Original assignee: Wuhan Smart Core Technology Development Co ltd
Current assignee: Wuhan Smart Core Technology Development Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-02-02
Anticipated expiration: 2030-06-10

Abstract

The utility model relates to an anti ambient light interference's diffuse reflection photoelectric sensor, this circuit include PCB board, photosensitive diode, two LED lamps, two first resistance, second resistance, first electric capacity, second electric capacity and wire jumper interface, photosensitive diode, two LED lamps, two first resistance, second resistance, first electric capacity and second electric capacity all set up on the PCB board, be provided with feeder ear, second end and earthing terminal on the wire jumper interface, the feeder ear has LED lamp and second resistance, first resistance and photosensitive diode, second electric capacity and LED lamp and second resistance to the second end in parallel in proper order, the second end has first electric capacity to the earthing terminal parallel, the second end still connects between first resistance and photosensitive diode. The utility model discloses a photoelectric sensor has stronger anti ambient light interference nature.

Description

Diffuse reflection photoelectric sensor capable of resisting ambient light interference

Technical Field

The utility model relates to a photoelectric sensor field, specific saying is an anti ambient light interference's diffuse reflection photoelectric sensor.

Background

A diffuse reflection type photoelectric sensor is characterized in that a transmitter and a receiver are arranged into a whole, the receiver cannot receive an optical signal sent by the transmitter under normal conditions, when a detected object enters a detection range, emitted light irradiates the surface of the detected object to form a diffuse reflection effect, part of the light is reflected back, and the receiver receives the optical signal and outputs an on-off control signal.

The existing photoelectric sensor has low anti-interference performance to ambient light.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide an anti ambient light interference's diffuse reflection photoelectric sensor, the utility model discloses a photoelectric sensor has stronger anti ambient light interference.

For solving the technical problem, the utility model discloses a following technical scheme:

a diffuse reflection photoelectric sensor with environmental light interference resistance comprises a PCB, a photosensitive diode, two LED lamps, two first resistors, a second resistor, a first capacitor, a second capacitor and a jumper interface, the photosensitive diode, the two LED lamps, the two first resistors, the second resistor, the first capacitor and the second capacitor are all arranged on the PCB, the jumper wire interface is provided with a power supply end, a second end and a grounding end, the power supply end is connected with the LED lamp and the first resistor, the second resistor and the photosensitive diode, the second capacitor and the LED lamp and the first resistor in parallel in sequence from the power supply end to the second end, a first capacitor is connected in parallel between the second end and a grounding end, the second end is also connected between the first resistor and the photosensitive diode, the PCB board is the rectangle lamellar body, photodiode and two LED lamps set up in PCB board bottom, two LED lamp symmetry sets up in the photodiode both sides.

Furthermore, the power supply end is used for connecting an external power supply, and the grounding end is a grounding end.

Furthermore, a plurality of through holes are formed in the PCB, copper columns are arranged at the top of the PCB, and the copper columns are fixed in the through holes through screws.

Furthermore, the photosensitive diode is a flat-head photosensitive diode, and the LED lamp is a flat-head LED lamp.

The utility model has the advantages that:

the utility model adopts the flat-head LED lamp as the luminous source, has better scattering effect on light compared with the common round-head LED, and has uniform illumination in short distance; the detection range of the flat-head photosensitive diode is larger relative to that of the source photosensitive diode; two LED lamps set up in the photodiode both sides, and on the coincidence portion that just in time can be in two LED lamps when the testee is in predetermineeing the distance, have stronger anti-jamming to ambient light.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram of the circuit connection of the present invention;

fig. 2 is a bottom view of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a schematic structural diagram of a PCB board.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a PCB board; 2. a photodiode; 3. an LED lamp; 4. a first resistor; 5. a second resistor; 6. A first capacitor; 7. a second capacitor; 8. a jumper wire interface; 81. a power supply terminal; 82. a second end; 83. a ground terminal; 9. and a copper pillar.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the 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", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a diffuse reflection photoelectric sensor for resisting ambient light interference includes a PCB board 1, a photodiode 2, two LED lamps 3, two first resistors 4, a second resistor 5, a first capacitor 6, a second capacitor 7 and a jumper interface 8, wherein the photodiode 2, the two LED lamps 3, the two first resistors 4, the second resistor 5, the first capacitor 6 and the second capacitor 7 are all disposed on the PCB board 1, the jumper interface 8 is provided with a power supply end 81, a second end 82 and a ground end 83, the power supply end 81 to the second end 82 are sequentially connected in parallel with the LED lamps 3 and the first resistors 4, the second resistor 5 and the photodiode 2, the second capacitor 7 and the LED lamps 3 and the first resistors 4, the first capacitor 6 is connected in parallel between the second end 82 and the ground end 83, the second end 82 is further connected between the first resistor 4 and the photodiode 2, PCB board 1 is the rectangle lamellar body, photodiode and two LED lamps 3 set up in PCB board 1 bottom, two 3 symmetries of LED lamp set up in photodiode 2 both sides.

In one embodiment, the power supply terminal 81 is used for connecting an external power supply, and the ground terminal 83 is a ground terminal.

As an implementation mode, a plurality of through holes are formed in the PCB 1, copper columns 9 are arranged on the top of the PCB 1, and the copper columns 9 are fixed in the through holes through screws.

In one embodiment, the photodiode 2 is a flat-head photodiode, and the LED lamp 3 is a flat-head LED lamp;

in one embodiment, the photodiode 2 is a flat-head photodiode, the model of the photodiode 2 is PT5325C-M-5, and the LED lamp 3 is a flat-head LED lamp;

the photoelectric sensor mainly adopts a flat-head LED as a luminous source, and the LED has better scattering effect on light compared with a common round-head LED, and the light is more uniform in short distance; when the distance between the sensor and a measured object is greater than the effective distance, the photosensitive diode is just positioned on the superposed part of the irradiation surfaces of the two LED lamps, namely a strong light spot, and has stronger anti-interference effect on ambient light.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. The diffuse reflection photoelectric sensor capable of resisting ambient light interference is characterized by comprising a PCB (1), a photosensitive diode (2), two LED lamps (3), two first resistors (4), a second resistor (5), a first capacitor (6), a second capacitor (7) and a jumper wire interface (8), wherein the photosensitive diode (2), the two LED lamps (3), the two first resistors (4), the second resistor (5), the first capacitor (6) and the second capacitor (7) are all arranged on the PCB (1), the jumper wire interface (8) is provided with a power supply end (81), a second end (82) and a grounding end (83), the power supply end (81) and the second end (82) are sequentially connected with the LED lamps (3) and the first resistors (4), the second resistor (5) and the photosensitive diode (2) in parallel, the second capacitor (7) and the LED lamps (3) and the first resistors (4), second end (82) and earthing terminal (83) between parallel have first electric capacity (6), second end (82) still connect between first resistance (4) and photodiode (2), PCB board (1) is the rectangular sheet body, photodiode and two LED lamp (3) set up in PCB board (1) bottom, two LED lamp (3) symmetry sets up in photodiode (2) both sides.

2. The diffuse reflection photoelectric sensor of claim 1, wherein the power supply terminal (81) is used for connecting an external power supply, and the ground terminal (83) is a ground terminal.

3. The diffuse reflection photoelectric sensor of anti ambient light interference of claim 1, wherein a plurality of through holes are opened on the PCB board (1), the top of the PCB board (1) is provided with copper columns (9), and the copper columns (9) are fixed in the through holes through screws.

4. The ambient light interference resistant diffusely reflecting photoelectric sensor according to claim 1, wherein the photodiode (2) is a flat-head photodiode and the LED lamp (3) is a flat-head LED lamp.