CN216144353U - Electrical circuit of photoelectric sensor and photoelectric sensor - Google Patents
Electrical circuit of photoelectric sensor and photoelectric sensor Download PDFInfo
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- CN216144353U CN216144353U CN202121603176.8U CN202121603176U CN216144353U CN 216144353 U CN216144353 U CN 216144353U CN 202121603176 U CN202121603176 U CN 202121603176U CN 216144353 U CN216144353 U CN 216144353U
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Abstract
The utility model discloses an electric circuit of a photoelectric sensor and the photoelectric sensor, and relates to the technical field of sensors. The electric circuit of the photoelectric sensor comprises an electric integrated chip, an action indicator lamp, a light-emitting element and a light-receiving element, wherein an infrared emitting pin and an infrared receiving pin of the electric integrated chip are respectively connected with a grounding end through the light-emitting element and the light-receiving element; the electric integrated chip can receive a voltage value within a preset range and output a normally open switching value signal and a normally closed switching value signal according to an optical signal in the environment. The electric circuit of the photoelectric sensor and the photoelectric sensor can reduce the cost and the size of the photoelectric sensor, can integrate multiple performances such as wide voltage, normally open and normally closed signal output and the like into the same circuit, and have high flexibility.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to an electric circuit of a photoelectric sensor and the photoelectric sensor.
Background
The photoelectric sensor is a device for converting an optical signal into an electrical signal, and the basic principle is that based on the photoelectric effect, a measured signal change is converted into a change of an optical signal, and then the optical signal is converted into the electrical signal by means of a photoelectric element to be output.
In the prior art, the electrical characteristics of a small industrial photoelectric sensor are basically realized by combining a plurality of electronic devices such as resistors, triodes, diodes, capacitors and the like. However, such an implementation method may cause that many electronic devices are used in the design of the product, the product cost is high, the volume occupation is large, miniaturization of the product is difficult to achieve, and in addition, it is difficult to integrate multiple performances (such as a wide voltage range) on the same photosensor, so the flexibility is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an electrical circuit of a photoelectric sensor and a photoelectric sensor, and mainly aims to solve the technical problems of high cost, large volume occupation and poor flexibility of the photoelectric sensor.
In order to achieve the above object, the present invention provides an electrical circuit of a photoelectric sensor, the electrical circuit of the photoelectric sensor comprises an electrical integrated chip, an action indicator light, a light emitting element and a light receiving element, wherein an infrared emitting pin and an infrared receiving pin of the electrical integrated chip are respectively connected with a ground terminal through the light emitting element and the light receiving element, the indicator light pin of the electrical integrated chip is connected with a power voltage through the action indicator light, the power voltage pin of the electrical integrated chip is connected with the power voltage, and the ground pin of the electrical integrated chip is connected with the ground terminal; the electric integrated chip can be used for receiving a voltage value within a preset range and outputting a normally open switching value signal and a normally closed switching value signal according to an optical signal in the environment.
In an embodiment of the present invention, optionally, the package of the electrical integrated chip is DFN-8, wherein the 8 pins of the electrical integrated chip are a null pin, a first output pin, a second output pin, a ground pin, an infrared receiving pin, an infrared emitting pin, an action indicator pin, and a power supply voltage pin, respectively.
In one embodiment of the utility model, optionally, the package size of the electrically integrated chip is 2mm by 3 mm.
In one embodiment of the present invention, optionally, the voltage receiving range of the electrical integrated chip is DC5V to 24V.
In an embodiment of the present invention, optionally, the first output pin of the electrical integrated chip is used for outputting a normally-closed switching value signal, and the second output pin of the electrical integrated chip is used for outputting a normally-open switching value signal.
In an embodiment of the present invention, optionally, the action indicator is used to emit light during the light entering action and to extinguish the light during the light shading action, wherein the action indicator is a light emitting diode, a cathode of the light emitting diode is connected to an indicator pin of the electrical integrated chip, and an anode of the light emitting diode is connected to the power voltage.
In one embodiment of the utility model, optionally, the electrical circuit of the photosensor further comprises a protection diode for avoiding damage to the electrical integrated chip caused by a reverse connection of the power supply, wherein the protection diode is connected in reverse between the supply voltage pin of the electrical integrated chip and the supply voltage or is integrated in said electrical integrated chip.
In addition, in order to achieve the above object, the present invention further provides a photosensor including an electrical circuit of the photosensor according to any one of the above embodiments.
The electric circuit of the photoelectric sensor and the photoelectric sensor comprise an electric integrated chip, an action indicator light, a light-emitting element and a light-receiving element, wherein the electric integrated chip can be connected with the action indicator light, the light-emitting element and the light-receiving element through pins, and the connection mode can save a plurality of resistors, triodes, diodes, capacitors and other electronic devices in the traditional circuit connection mode, reduce the cost of the photoelectric sensor and reduce the volume occupation of the photoelectric sensor.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic diagram illustrating a circuit structure of an electrical circuit of a photosensor according to an embodiment of the present invention.
Detailed Description
The utility model will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
To further explain the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present application will be given with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The electrical circuit of a photosensor according to some embodiments of the present invention is described below in conjunction with fig. 1.
An embodiment of the present invention first proposes an electrical circuit of a photosensor. As shown in fig. 1, the electrical circuit of the photoelectric sensor includes an electrical integrated chip, an operation indicator LED, a light emitting element IRED and a light receiving element PTR, wherein an infrared emitting pin IRED and an infrared receiving pin PTR of the electrical integrated chip are respectively connected to a ground terminal through the light emitting element IRED and the light receiving element PTR, the indicator pin LED of the electrical integrated chip is connected to a power supply voltage VCC through the operation indicator LED, the power supply voltage pin VCC of the electrical integrated chip is connected to the power supply voltage VCC, and the ground pin GND of the electrical integrated chip is connected to the ground terminal GND.
In the above embodiment, the electrical integrated chip can replace each component in the conventional electrical circuit to realize the electrical characteristics of the photoelectric sensor, that is, one electrical integrated chip can replace a series of electronic devices such as a plurality of resistors, triodes, diodes and capacitors in the conventional circuit, so that the scheme is greatly improved in both cost and occupied volume of the circuit. Besides, the electric integrated chip is used as an integrated chip, and various performances can be integrated together. In this embodiment, the electrical integrated chip can receive the voltage value in the predetermined range through the power voltage pin, wherein the predetermined range can be adjusted according to the actual situation, for example, the predetermined range can be DC5V-24V, and the like, in this way, the electrical circuit of the photosensor can receive the voltage value in the wide voltage range and can output the switching value signal corresponding to the wide voltage range, so that the electrical circuit of the photosensor can be simultaneously applied to various types of photosensors without modification.
Further, the electrical integrated chip may further output a normally open switching value signal and a normally closed switching value signal through different output pins according to an optical signal in the environment, where the normally open switching value signal refers to outputting a high level in the light incident mode (i.e., when the optical signal in the environment is higher than a predetermined intensity), and outputting a low level in the light shielding mode (i.e., when the optical signal in the environment is lower than the predetermined intensity); the normally closed switching value signal means that a low level is output in the light-in mode and a high level is output in the light-shielding mode. In this embodiment, the electrical integrated chip can respectively output the normally open switching value signal and the normally closed switching value signal through different output pins, so that, in practical application, a user can select the corresponding output pin as the signal output pin of the photoelectric sensor according to the actual situation of a product without switching or changing the voltage output mode of the circuit, thereby improving the applicability of the circuit.
Further, in this embodiment, the electric circuit of the photosensor includes, in addition to the electric integrated chip, other electronic components necessary for the photosensor, such as an operation indicator LED, a light emitting element IRED, a light receiving element PTR, and the like, and these electronic components are simply connected to the respective pins of the electric integrated chip, so that the electric characteristics of the photosensor can be realized. The connection mode between each electronic component and the electrical integrated chip can refer to fig. 1 and the description above, and this embodiment is not described herein in detail. It can be understood that the electric circuit of the photoelectric sensor provided by the embodiment can be widely applied to small-sized industrial photoelectric sensors, and by the mode, the engineering number of the electric circuit of the photoelectric sensor can be reduced, the raw materials are reduced, the cost is reduced, multiple performances (wide voltage range, normally open + normally closed signal quantity output) can be integrated into the same photoelectric sensor, and the flexibility is higher.
The electric circuit of the photoelectric sensor provided by the embodiment of the utility model comprises an electric integrated chip, an action indicator light, a light-emitting element and a light-receiving element, wherein the electric integrated chip can be connected with the action indicator light, the light-emitting element and the light-receiving element through each pin, and the connection mode can save a plurality of electronic devices such as a resistor, a triode, a diode, a capacitor and the like in the traditional circuit connection mode, thereby reducing the cost of the photoelectric sensor and reducing the volume occupation of the photoelectric sensor.
In one embodiment of the present invention, the packaging of an electrically integrated chip may optionally employ DFN-8. As shown in fig. 1, the 8 pins of the electrical integrated chip may be a null pin NC, a first output pin Vout1, a second output pin Vout2, a ground pin GND, an infrared receiving pin PTR, an infrared emitting pin IRED, an operation indicator lamp pin LED, and a power supply voltage pin VCC, respectively. The DFN package is a double-sided or square leadless flat leadless package, and 8 refers to 8 leads of the package. Specifically, the DFN package is one of surface mount type packages, and electrode contacts are disposed on two sides or four sides of the package, and since the DFN package has a leadless characteristic, the footprint of the mounting is smaller than that of the conventional SOP package, and the height of the mounting is also lower than that of the SOP package. In the embodiment, the DFN-8 packaging is adopted, so that the occupied space of the photoelectric sensor can be effectively reduced. In addition, it should be noted that the electrical integrated chip may also adopt other types of packages besides the DFN-8 package, such as SOP-8, and the embodiment is not limited in detail herein.
In one embodiment of the present invention, optionally, the package size of the electrical integrated chip may be 2mm by 3 mm. In the present embodiment, when the package of the electrical integrated chip is DFN-8, the package size of the electrical integrated chip can reach 2mm × 3mm, and such a small size can help the electrical circuit of the photosensor to be installed in some small-sized photosensors, such as a small-slot photosensor, and the like, thereby realizing miniaturization of the photosensor. It should be noted that in other embodiments, the electrical integrated chip may also adopt other package sizes, and this embodiment is not limited in this respect.
In one embodiment of the present invention, the voltage receiving range of the electrical integrated chip may be between DC5V and 24V. In this embodiment, the electrical integrated chip may receive a voltage value in a wide voltage range through the power supply voltage pin, and output a switching value signal in a corresponding wide voltage range through the output pin. Namely, when the voltage input value of the electric integrated chip is 5V, the output voltage value is also 5V; when the voltage input value of the electric integrated chip is 16V, the output voltage value is also 16V. In this way, the electrical circuit of the photosensor can be adapted to multiple types of photosensors simultaneously without modification. It should be noted that, in other embodiments, the voltage receiving range of the electrical integrated chip may also be correspondingly widened or narrowed, and this embodiment is not specifically limited herein.
In an embodiment of the present invention, optionally, the electrical integrated chip has two output pins, which are a first output pin and a second output pin, respectively, where the first output pin may be used to output a normally-closed switching value signal, and the second output pin may be used to output a normally-open switching value signal, in this way, a user may select the first output pin or the second output pin as a signal output pin of the photoelectric sensor according to an actual situation of a product in an actual application without switching or changing a voltage output mode of the circuit. It is understood that, in other embodiments, the output signals of the first output pin and the second output pin of the electrical integrated chip may also be reversed, that is, the first output pin outputs a normally open switching value signal, and the second output pin outputs a normally closed switching value signal, which is not limited in this embodiment.
In one embodiment of the present invention, optionally, the action indicator light may be used to illuminate when the light is entering the action and to extinguish when the light is shading the action. In this embodiment, the operation indicator may be a light emitting diode, wherein a cathode of the light emitting diode is connected to an indicator pin of the electrical integrated chip, and an anode of the light emitting diode is connected to a power voltage. In this embodiment, through setting up the action pilot lamp, can convenience of customers timely make the judgement to the current state of circuit, judge promptly that the current state of circuit is for going into light state or shading state to promote photoelectric sensor's ease for use.
In one embodiment of the utility model, optionally, the electrical circuit of the photosensor further comprises a protection diode, wherein the protection diode is operable to prevent damage to the electrical integrated chip caused by reverse connection of the power supply, wherein the protection diode is connectable in reverse between the supply voltage pin of the electrical integrated chip and the supply voltage. In this embodiment, through setting up protection diode, can effectually prevent the damage that the power joins conversely caused the circuit to promote the whole security of circuit. In addition, the protection diode can also be integrated in an electric integrated chip to further reduce the number of components in the circuit and reduce the occupied volume of the circuit. It should be noted that, besides the protection diode, a short-circuit protection circuit may be integrated into the electrical integrated chip, so as to further improve the safety of the circuit.
In another aspect, embodiments of the present invention further provide a photosensor including an electrical circuit of the photosensor according to any one of the above embodiments. As shown in fig. 1, the electrical circuit of the photoelectric sensor includes an electrical integrated chip, an operation indicator LED, a light emitting element IRED and a light receiving element PTR, wherein an infrared emitting pin IRED and an infrared receiving pin PTR of the electrical integrated chip are connected to a ground terminal through the light emitting element IRED and the light receiving element PTR, respectively, the indicator pin LED of the electrical integrated chip is connected to a power supply voltage VCC through the operation indicator LED, the power supply voltage pin VCC of the electrical integrated chip is connected to the power supply voltage VCC, and a ground pin GND of the electrical integrated chip is connected to the ground terminal GND, wherein the electrical integrated chip can be used to receive a voltage value within a predetermined range and output a normally-on switching value signal and a normally-off switching value signal according to an optical signal in an environment.
In addition, the photoelectric sensor can receive a voltage value within a preset range and can simultaneously output a normally open switching value signal and a normally closed switching value signal, namely, multiple performances (wide voltage range, normally open + normally closed signal value output) can be integrated into the same photoelectric sensor, and the flexibility is very high.
As a refinement of the above embodiments, the electrical circuit of the photosensor will now be described in detail by a specific embodiment. As shown in fig. 1, the electric circuit of the photoelectric sensor includes an electric integrated chip, an operation indicator LED, a light emitting element IRED, and a light receiving element PTR, wherein the package of the electric integrated chip is DFN-8, the package size is 2mm × 3mm, and 8 pins of the electric integrated chip are a dummy pin NC, a first output pin Vout1, a second output pin Vout2, a ground pin GND, an infrared receiving pin PTR, an infrared emitting pin IRED, an operation indicator LED, and a power supply voltage pin VCC, respectively. Further, infrared emission pin IRED and infrared receipt pin PTR of electric integrated chip can link to each other with the earthing terminal through luminous element IRED and photic element PTR respectively, and electric integrated chip's pilot lamp pin LED accessible action pilot lamp LED links to each other with mains voltage VCC, and electric integrated chip's mains voltage pin VCC links to each other with mains voltage VCC, and earthing pin GND links to each other with earthing terminal GND, and electric integrated chip's empty pin NC is unsettled to be set up.
In the above embodiment, the electrical integrated chip can receive the dc voltage within 5V-24V through the power voltage pin VCC, and can output the normally closed switching value signal through the first output pin Vout1 and output the normally open switching value signal through the second output pin Vout2 in the Light On/Dark On dual mode. Furthermore, the action indicator light can be a light emitting diode, and can emit light when the light enters the action and extinguish the light when the light shields the action. In addition, the power supply reverse connection protection circuit and the output short circuit protection circuit can also be integrated in an electrical integrated chip, so that the overall safety of the circuit is improved. The electric circuit of the photoelectric sensor provided by the embodiment can be widely applied to small industrial photoelectric sensors, can reduce the number of processes, reduce raw materials and reduce the cost, can integrate multiple performances (wide voltage range, normally open + normally closed signal quantity output) into the same photoelectric sensor, and has very high flexibility.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An electric circuit of a photoelectric sensor, comprising an electric integrated chip, an operation indicator lamp, a light emitting element and a light receiving element, wherein,
the infrared emitting pin and the infrared receiving pin of the electric integrated chip are respectively connected with a grounding end through the light emitting element and the light receiving element, the indicating lamp pin of the electric integrated chip is connected with power voltage through the action indicating lamp, the power voltage pin of the electric integrated chip is connected with the power voltage, and the grounding pin of the electric integrated chip is connected with the grounding end;
the electric integrated chip is used for receiving a voltage value within a preset range and outputting a normally open switching value signal and a normally closed switching value signal according to an optical signal in the environment.
2. The electrical circuit of the photoelectric sensor of claim 1, wherein the package of the electrical integrated chip is DFN-8, wherein the 8 pins of the electrical integrated chip are a dummy pin, a first output pin, a second output pin, a ground pin, an infrared receiving pin, an infrared emitting pin, an operation indicator pin, and a power supply voltage pin.
3. The electrical circuit of the photosensor of claim 2, wherein the package size of the electrical integrated chip is 2mm by 3 mm.
4. The electrical circuit of a photosensor according to any one of claims 1-3 wherein the voltage receiving range of the electrical integrated chip is DC5V to 24V.
5. The electrical circuit of the photoelectric sensor according to any one of claims 1 to 3, wherein a first output pin of the electrical integrated chip is used for outputting a normally-closed switching value signal, and a second output pin of the electrical integrated chip is used for outputting a normally-open switching value signal.
6. The electrical circuit of the photoelectric sensor as claimed in claim 1, wherein the operation indicator is a light emitting diode, a cathode of the light emitting diode is connected to an indicator pin of the electrical integrated chip, and an anode of the light emitting diode is connected to the power supply voltage.
7. The electrical circuit of a photosensor according to claim 1 further comprising a protection diode for protecting the electrical integrated chip from damage caused by a reverse connection of a power supply, wherein the protection diode is connected in reverse between a supply voltage pin of the electrical integrated chip and a supply voltage or is integrated in the electrical integrated chip.
8. A photosensor characterized in that it comprises the electrical circuit of the photosensor of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603176.8U CN216144353U (en) | 2021-07-14 | 2021-07-14 | Electrical circuit of photoelectric sensor and photoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603176.8U CN216144353U (en) | 2021-07-14 | 2021-07-14 | Electrical circuit of photoelectric sensor and photoelectric sensor |
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| Publication Number | Publication Date |
|---|---|
| CN216144353U true CN216144353U (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121603176.8U Active CN216144353U (en) | 2021-07-14 | 2021-07-14 | Electrical circuit of photoelectric sensor and photoelectric sensor |
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| CN (1) | CN216144353U (en) |
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- 2021-07-14 CN CN202121603176.8U patent/CN216144353U/en active Active
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