CN211405994U - Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch - Google Patents
Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch Download PDFInfo
- Publication number
- CN211405994U CN211405994U CN202020414322.1U CN202020414322U CN211405994U CN 211405994 U CN211405994 U CN 211405994U CN 202020414322 U CN202020414322 U CN 202020414322U CN 211405994 U CN211405994 U CN 211405994U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- infrared
- voltage
- voltage signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model relates to an infrared ray intensity indicating circuit of an infrared correlation type photoelectric switch, which comprises a power circuit used for supplying power to the photoelectric switch; the infrared receiving circuit is used for receiving the signal transmitted by the transmitter and converting the signal into an infrared electric signal; the voltage conversion circuit is used for converting the infrared electric signal into a voltage signal; and the signal intensity display circuit is used for receiving the voltage signal, responding to the voltage signal and performing corresponding brightness display according to the magnitude of the voltage signal, wherein the brightness display is brighter when the voltage signal is larger, and the brightness display is darker when the voltage signal is smaller. The utility model discloses can directly instruct transmitter transmitted signal's power to the operating condition that photoelectric switch can in time be observed according to power instruction to the people's eye is favorable to the staff in time to make the reply.
Description
Technical Field
The utility model belongs to the technical field of photoelectric switch's technique and specifically relates to an infrared correlation type photoelectric switch infrared ray intensity indicating circuit is related to.
Background
At present, the correlation type photoelectric switch is composed of a transmitter and a receiver, the working principle of the correlation type photoelectric switch is that light emitted by the transmitter directly enters the receiver, when an object to be detected passes through the space between the transmitter and the receiver, the photoelectric switch generates a switching signal, the correlation type photoelectric switch is commonly used for detecting whether people or objects exist in places such as a passageway or a production line, and the like, particularly, a market gate detects the flow of detection personnel, the product counting of the production line and the like.
The existing correlation type photoelectric switch, such as a remote correlation type laser photoelectric switch disclosed in the publication No. CN204680137U, includes a laser emitting sensor and a laser receiving sensor; the laser emission sensor comprises a laser generator, a first power circuit module, a first CPU, a first optical lens and a first optical lens. The power supply circuit provides power for the laser generator and the first CPU, and the first CPU controls the duty ratio of the laser generator for emitting laser. The laser receiving sensor comprises a second power circuit module, a second CPU, an optical triode, an output circuit, a second optical lens and an optical filter. And the second power supply circuit module provides power for the second CPU and the phototriode. The electric signal generated by the phototriode is transmitted to the second CPU, and the second CPU is connected with the output circuit.
The above prior art solutions have the following drawbacks: above-mentioned correlation formula photoelectric switch is at the during operation, infrared ray that the transmitter produced produces a little light ring when reacing the receiver, the central point signal of light ring is strongest, then the signal is weaker outward, the receiving face of receiver must just normally work in the within range of light ring, consequently when installation correlation formula photoelectric switch, need can normally work after debugging calibration transmitter and receiver, at the in-process of correlation formula photoelectric switch work, because transmitter or receiver surface can accumulate the dust, make the transmitted signal weakening that the receiver received, easily lead to correlation formula photoelectric switch stop work, but the condition of this kind of signal weakening can't be observed through people's eye directness, and then lead to the staff can't in time make a reply to the condition that photoelectric switch stopped work, await improvement.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide an infrared correlation type photoelectric switch infrared ray intensity indicating circuit, can directly instruct transmitter emission signal's power or weakness to in time observe photoelectric switch's behavior according to power or weakness instruction, be favorable to the staff in time to make the reply.
The above object of the present invention can be achieved by the following technical solutions: an infrared ray intensity indicating circuit of an infrared correlation type photoelectric switch comprises:
the power supply circuit is used for supplying power to the photoelectric switch;
the infrared receiving circuit is used for receiving the signal transmitted by the transmitter and converting the signal into an infrared electric signal;
the voltage conversion circuit is used for converting the infrared electric signal into a voltage signal;
and the signal intensity display circuit is used for receiving the voltage signal, responding to the voltage signal and performing corresponding brightness display according to the magnitude of the voltage signal, wherein the brightness display is brighter when the voltage signal is larger, and the brightness display is darker when the voltage signal is smaller.
Through adopting above-mentioned technical scheme, when photoelectric switch began the during operation, infrared ray receiving circuit converts the signal conversion that the transmitter sent into infrared signal, and convert voltage signal into through voltage converting circuit, the less or more close to the central point of receiver of interference that the infrared ray that the transmitter sent received to the receiver, infrared signal is big more, voltage signal is big more, and then when signal strength display circuit received corresponding voltage signal, voltage signal is big more, luminance shows brightly more, voltage signal is little less, luminance shows darkly more, so that people's eye can judge photoelectric switch's behavior according to the intensity of luminance, be favorable to the staff in time to make the reply.
The present invention may be further configured in a preferred embodiment as: further comprising:
and the signal amplification circuit is arranged between the infrared receiving circuit and the voltage conversion circuit and is used for receiving the infrared electric signal and amplifying the signal.
The present invention may be further configured in a preferred embodiment as: the signal amplification circuit includes:
the preposed receiving amplifying circuit is used for receiving the infrared electric signal and outputting a pulse signal with the same frequency as the infrared electric signal; and
and the post-stage amplifying circuit is used for receiving the pulse signal, amplifying the pulse signal and outputting the amplified pulse signal to the voltage conversion circuit.
The present invention may be further configured in a preferred embodiment as: the voltage conversion circuit includes:
the drive circuit is used for receiving the amplified pulse signal and outputting a voltage signal; and
and the continuous output circuit is used for receiving the voltage signal and responding to the voltage signal to continuously output the voltage signal.
The present invention may be further configured in a preferred embodiment as: the signal strength display circuit includes:
the voltage division circuit is used for dividing the received voltage signal; and
and the brightness display circuit responds to the voltage signal after voltage division and performs brightness display according to the intensity of the voltage signal.
The present invention may be further configured in a preferred embodiment as: further comprising:
the comparison output circuit is used for comparing the continuously output voltage signal with a power supply voltage signal of the power supply circuit and outputting a corresponding comparison signal according to a comparison result;
and the rear-stage output protection circuit responds to the comparison signal and carries out overcurrent protection on the circuit.
The present invention may be further configured in a preferred embodiment as: further comprising:
and the filter circuit is arranged between the continuous output circuit and the comparison output circuit and is used for filtering the received continuous voltage signal so as to output stable direct-current voltage.
The present invention may be further configured in a preferred embodiment as: the post-stage output protection circuit includes:
and the indicating circuit is used for prompting when the post-stage output protection circuit generates overcurrent protection.
To sum up, the utility model discloses a following at least one useful technological effect:
the infrared receiving circuit converts the signal that the transmitter launched into infrared signal to convert voltage signal through voltage conversion circuit, and infrared signal is big more, and voltage signal is big more, when making signal strength display circuit receive corresponding voltage signal, carry out luminance demonstration, so that people's eye can judge photoelectric switch's behavior according to the intensity of luminance, be favorable to the staff in time to make the reply.
Drawings
Fig. 1 is a schematic diagram of the overall circuit configuration of the present embodiment.
Fig. 2 is a circuit configuration diagram of the infrared receiving circuit and the signal amplifying circuit in the present embodiment.
Fig. 3 is a circuit structure diagram of the voltage converting circuit and the signal strength display circuit in the present embodiment.
Fig. 4 is a circuit configuration diagram of the power supply circuit, the comparison output circuit, and the post-stage output protection circuit in the present embodiment.
In the figure, 1, a power supply circuit; 2. an infrared receiving circuit; 3. a voltage conversion circuit; 31. a drive circuit; 32. a continuous output circuit; 4. a signal strength display circuit; 41. a voltage dividing circuit; 42. a luminance display circuit; 5. a signal amplification circuit; 51. a pre-receiving amplifying circuit; 52. a post-stage amplification circuit; 6. a comparison output circuit; 7. a rear-stage output protection circuit; 8. a filter circuit; 9. an indication circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses an infrared correlation type photoelectric switch infrared ray intensity indicating circuit, including power supply circuit 1, infrared ray receiving circuit 2, signal amplification circuit 5, voltage conversion circuit 3, signal intensity display circuit 4, comparison output circuit 6 and back level output protection circuit 7.
The power supply circuit 1 is used for supplying power to the photoelectric switch; the infrared receiving circuit 2 is used for receiving the signal transmitted by the transmitter and converting the signal into an infrared electric signal; the signal amplifying circuit 5 is coupled to the infrared receiving circuit 2 to receive the infrared electric signal and amplify the infrared electric signal, and the voltage converting circuit 3 is coupled to the signal amplifying circuit 5 and is configured to convert the amplified infrared electric signal into a voltage signal; the signal strength display circuit 4 is coupled to the voltage conversion circuit 3 for receiving the voltage signal and responding to the voltage signal, and performs a corresponding brightness display according to the magnitude of the voltage signal, wherein the larger the voltage signal is, the brighter the brightness display is, and the smaller the voltage signal is, the darker the brightness display is.
Referring to fig. 1 and 2, as an embodiment of the present invention, the infrared receiving circuit 2 includes an infrared receiving tube PD with a model SFH320, an eighth resistor R8, an eighteenth capacitor C18, a cathode of the infrared receiving tube PD and one end of an eighth resistor R8 are coupled to one end of the eighteenth capacitor C18, and an anode of the infrared receiving tube PD, the other end of the eighth resistor R8 and the other end of the eighteenth capacitor C18 are coupled to the signal amplifying circuit 5.
The signal amplification circuit 5 includes a pre-receiving amplification circuit 51 and a post-amplification circuit 52; the pre-receiving amplifying circuit 51 is coupled to the infrared receiving circuit 2 to receive the infrared electrical signal and output a pulse signal having the same frequency as the infrared electrical signal; the post-stage amplifying circuit 52 is coupled to the pre-receiving amplifying circuit 51 for receiving the pulse signal, amplifying the pulse signal and outputting the amplified pulse signal to the voltage converting circuit 3.
The pre-receiving amplifying circuit 51 comprises a first signal amplifier a, a second signal amplifier B, a twenty-third resistor R23, a fifteenth resistor R15, a twenty-ninth resistor R29, a twenty-second resistor R22, a fifth resistor R5, a seventh resistor R7, a seventh capacitor C7 and a twelfth capacitor C12; the inverting terminal of the first signal amplifier a is coupled to the other terminal of the eighteenth capacitor C18 through a twenty-third resistor R23, the output end of the first signal amplifier a is coupled to one end of a twelfth capacitor C12, the other ends of the fifteenth resistor R15 and the seventh capacitor C7, the other end of the twenty-ninth resistor R29 is coupled to the VCC voltage, the other end of the fifth resistor R5 is grounded, the inverting terminal of the second signal amplifier B is coupled to the other end of the twelfth capacitor C12 through a twelfth resistor R22, meanwhile, the output terminal of the second signal amplifier B is coupled to the other end of the seventh resistor R7 and the post-amplifier circuit 52, and the non-inverting terminal of the second signal amplifier B is grounded through the fifth resistor R5.
The principles of the infrared receiving circuit 2 and the pre-receiving amplifier circuit 51 are as follows: the signal transmitted by the transmitter is received by the infrared receiving tube PD, converted into an electrical signal, sent to the pre-receiving amplifier circuit 51 via the C18, and then output a pulse voltage with a certain amplitude and the same frequency as the converted electrical signal.
The rear-stage amplifying circuit 52 comprises an NPN-type sixth triode Q6, a fourteenth capacitor C14, a thirty-first resistor R31, a thirty-second resistor R32, a thirty-third resistor R33 and a tenth resistor R10; the base of the sixth transistor Q6 is coupled to the output terminal of the second signal amplifier B through a fourteenth capacitor C14, and is also coupled to one end of a thirty-first resistor R31 and one end of a thirty-second resistor R32, the other end of the thirty-first resistor R31 is coupled to the VCC voltage, the other end of the thirty-second resistor R32 is grounded, the emitter of the sixth transistor Q6 is grounded through a thirty-third resistor R33, and the collector is coupled to the VCC voltage through a tenth resistor R10, and is also coupled to the voltage conversion circuit 3.
Referring to fig. 1 and 3, the voltage conversion circuit 3 includes a driving circuit 31 and a continuous output circuit 32, wherein the driving circuit 31 is coupled to the post-stage amplifying circuit 52 to receive the amplified pulse signal and output a voltage signal; the continuous output circuit 32 is coupled to the driving circuit 31 for receiving the voltage signal and continuously outputting the voltage signal in response to the voltage signal.
The driving circuit comprises a sixth capacitor C6 and a fourth diode D4; the continuous output circuit 32 includes an NPN-type second transistor Q2, a twenty-first resistor R21, and a tenth capacitor C10, wherein a base of the second transistor Q2 is coupled to a collector of the sixth transistor Q6 through a sixth capacitor C6, and is also coupled to a cathode of a fourth diode D4, an anode of the fourth diode D4 is grounded, a collector of the second transistor Q2 is coupled to a VCC voltage, an emitter of the second transistor Q2 is coupled to one end of the twenty-first resistor R21 and one end of the tenth capacitor C10, and the other end of the twenty-first resistor R21 and the other end of the tenth capacitor C10 are grounded.
The principle regarding the voltage conversion circuit 3 is as follows: the sixth capacitor C6 and the fourth diode D4 form a driving circuit 31 to drive the second triode Q2, when the pulse signal is at a high level, the second triode Q2 is turned on, and the higher the voltage level of the input signal is, the deeper the conduction degree is; the twenty-first resistor R21 and the tenth capacitor C10 are connected in parallel and connected between the emitter of the second triode Q2 and the ground, when the 1 st high level arrives, because the second triode Q2 is conducted, a voltage drop is formed at the connection point between the twenty-first resistor R21 and the emitter of the second triode Q2 and the tenth capacitor C10 is charged, because the high level time of the input signal pulse is very short, the second triode Q2 is cut off rapidly after the low level arrives, because of the charging effect of the tenth capacitor C10, the potential of the connection point between the twenty-first resistor R21 and the emitter of the second triode Q2 cannot be changed into 0 immediately, the tenth capacitor C10 discharges through the twenty-first resistor R21, and the level of the connection point between the twenty-first resistor R21 and the emitter of the second triode Q2 gradually drops; when the voltage is reduced to a certain degree, the signal pulse voltage is high and the second triode Q2 is conducted again, and the tenth capacitor C10 starts to charge again; the above steps are repeated in a circulating way, and incomplete smooth direct-current voltage is formed at the point A so as to keep the voltage output continuously; the stronger the infrared signal is, the deeper the Q2 is conducted, and the higher the voltage of the point A is; otherwise the lower.
The signal intensity display circuit 4 includes a voltage divider circuit 41 and a luminance display circuit 42; the voltage dividing circuit 41 is coupled to the continuous output circuit 32 for dividing the received voltage signal; the brightness display circuit 42 is coupled to the voltage dividing circuit 41 and responds to the divided voltage signal to display brightness according to the intensity of the voltage signal.
The voltage divider circuit 41 comprises a thirtieth resistor R30 and a fourth resistor R4; the luminance display circuit 42 includes an NPN-type fifth transistor Q5, a third light emitting diode D3, and a twenty-seventh resistor R27; a base of the fifth transistor Q5 is coupled to one end of the fourth resistor R4 and the other end of the tenth capacitor C10 through a thirty-first resistor R30, an emitter of the fifth transistor Q5 and the other end of the fourth resistor R4 are grounded, a collector of the fifth transistor Q5 is coupled to a cathode of the third light emitting diode D3, and an anode of the third light emitting diode D3 is coupled to the power circuit 1 through a twenty-seventh resistor R27.
The principle of the signal strength display circuit 4 is as follows: the voltage of a connection point between the twenty-first resistor R21 and the emitter of the second triode Q2 is divided by the thirty-first resistor R30 and the fourth resistor R4 to reach the base of the fifth triode Q5, because the resistance values of the thirty-first resistor R30 and the fourth resistor R4 are large enough, the fifth triode Q5 works in an amplification state, and the collector current of the fifth triode Q5 is controlled by the connection point between the twenty-first resistor R21 and the emitter of the second triode Q2; the third light emitting diode D3 is a current device, and is connected to the positive electrode of the power supply through the twenty-seventh resistor R27, when the voltage at the point a rises and the fifth triode Q5 is turned on, the collector current of the fifth triode Q5 increases, the current flowing through the third light emitting diode D3 increases, and the third light emitting diode D3 lights up; therefore, the higher the voltage at point a, the brighter the third led D3, the more the signal emitted by the receiver-transmitter is, and finally, the brightness of the third led D3 can reflect the intensity of the received infrared pulse.
Referring to fig. 1 and 4, the power circuit 1 inputs a voltage of 10-30V, outputs a stable voltage of 8V to power the photo switch, and specifically includes an NPN-type third transistor Q3, a first zener diode DZ1, a second zener diode DZ2, a first diode D1, a first polarity capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifteenth capacitor C15, a first resistor R1, and a thirty-fifth resistor R35, wherein an anode of the first diode D1 and one end of the third capacitor C3 are coupled to the input voltage, a cathode of the first diode D1 is coupled to one end of the fifteenth capacitor C15 and the first resistor R1, the other ends of the third capacitor C9 and the fifteenth capacitor C15 are grounded, the other end of the first resistor R1 is coupled to one end of the second capacitor C2, one end of the thirty-fifth resistor R35, one end of the first capacitor DZ 6 1, the other end of the third capacitor D867 and the collector of the second zener diode DZ1 are grounded, a base of the third transistor Q3 is coupled to the other end of the thirty-fifth resistor R35, a cathode of the second zener diode DZ2, and an anode of the first polarity capacitor C1, an anode of the second zener diode DZ2 is grounded, and an emitter of the third transistor Q3 is coupled to a cathode of the first polarity capacitor C1 through the fourth capacitor C4 and connected to VCC voltage.
The comparison output circuit 6 is coupled to the voltage conversion circuit 3 and the power circuit 1, and is configured to compare the continuously output voltage signal with a power supply voltage signal of the power circuit 1, and output a corresponding comparison signal according to a comparison result; a filter circuit 8 is disposed between the continuous output circuit 32 and the comparison output circuit 6, and is used for filtering the received continuous voltage signal to output a stable dc voltage.
The filter circuit 8 comprises a seventeenth resistor R17, an eleventh capacitor C11 and a fifth diode D5; the comparison output circuit 6 comprises a first comparator C, a sixth resistor R6, a thirteenth resistor R13 and a twentieth resistor R20; the fifth diode D5 is connected in parallel to the seventeenth resistor R17 and coupled to the tenth capacitor C10, the eleventh capacitor C11 and the inverting terminal of the first comparator C, the inverting terminal of the first comparator C is grounded through the twentieth resistor R20 and coupled to the power circuit 1 through the sixth resistor R6, and the output terminal of the first comparator C is coupled to the post-stage output protection circuit 7 and the thirteenth resistor R13.
The principle of the comparison output circuit 6 is as follows: the other path of the voltage at the connection point between the twenty-first resistor R21 and the emitter of the second triode Q2 is input to the inverting terminal of the first comparator C through the seventeenth resistor R17, the eleventh capacitor C11 and the fifth diode D5, when the signal voltage input at the inverting terminal of the first comparator C is greater than the non-inverting terminal voltage of the first comparator C, the output terminal of the first comparator C outputs a low level, and when the signal voltage input at the inverting terminal of the first comparator C is less than the non-inverting terminal voltage of the first comparator C, the output terminal of the first comparator C outputs a high level.
And the rear-stage output protection circuit 7 responds to the comparison signal and carries out overcurrent protection on the circuit, an indicating circuit 9 is arranged in the rear-stage output protection circuit 7, and when the output end of the first comparator C outputs a high level, the indicating circuit 9 works and carries out overcurrent indication.
The rear-stage output protection circuit 7 comprises a second comparator D, NPN type fourth triode Q4, a first triode Q1, a seventh triode Q7, a PNP type eighth triode Q8, a fourteenth resistor R14, a twenty-fourth resistor R24, a ninth resistor R9, a third resistor R3, a twenty-sixth resistor R26, a nineteenth resistor R19, an eighteenth resistor R18, a twelfth resistor R12, a sixteenth resistor R16, a third voltage stabilizing diode DZ3 and a thirteenth capacitor C13; the indicating circuit 9 comprises a second light emitting diode D2; the non-inverting terminal of the second comparator D is coupled to the inverting terminal of the first comparator C, the inverting terminal of the second comparator D is coupled to one terminal of a fourteenth resistor R14, the output terminal of the second comparator D is coupled to a connection point between the fourteenth resistor R14 and the twenty-fourth resistor R24 and the base of the first transistor Q4, the emitters of the first transistor Q4 and the other terminal of the twenty-fourth resistor R24 are grounded through a twenty-sixth resistor R26, the collector of the first transistor Q4 is coupled to the anode of the second light emitting diode D2 and the emitter of the eighth transistor Q8 through a third resistor R3, the cathode of the second light emitting diode D2 is coupled to the base of the first transistor Q1 and is grounded through an eighteenth resistor R18, the base of the eighth transistor Q8 is coupled to the collector of the seventh transistor Q7, the collector of the eighth transistor Q8 is coupled to the base of the seventh transistor Q7, one terminal of a nineteenth resistor R19 and a thirteenth capacitor 13, an emitter of the seventh triode Q7, the other end of the nineteenth resistor R19, and the other end of the thirteenth capacitor C13 are grounded, a cathode of the second light emitting diode D2 is coupled to a base of the first triode Q1, an emitter of the first triode Q1 is grounded through a sixteenth resistor R16, a collector of the first triode Q1 is coupled to a cathode of the third zener diode DZ3, and an anode of the third zener diode DZ3 is grounded.
The implementation principle of the embodiment is as follows:
the infrared receiving tube PD receives a signal emitted by the emitter and converts the signal into an infrared electric signal, the signal amplification circuit 5 amplifies the signal and outputs a pulse signal, the signal is converted into a voltage signal through the voltage conversion circuit 3, the stronger the intensity of the infrared ray emitted by the emitter, the stronger the pulse signal, the stronger the voltage signal, the deeper the conduction degree of the second triode Q2, and the voltage signal is output to the signal intensity display circuit 4, at this time, the voltage signal is divided by the thirty-third resistor R30 and the fourth resistor R4 and then input to the base of the fifth triode Q5, the fifth triode Q5 is turned on, the third light emitting diode D3 performs light emitting operation, and in the light emitting process, the larger the voltage signal is, the larger the current passing through the third light emitting diode D3 is, so that the third light emitting diode D3 is lightened along with the increase of the current; conversely, when the signal transmitted by the transmitter is weak or no signal is transmitted, and the voltage signal is not sufficient to turn on the fifth transistor Q5, the third light emitting diode D3 is turned off, indicating that no signal is transmitted.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an infrared correlation type photoelectric switch infrared ray intensity indicating circuit which characterized in that: the method comprises the following steps:
the power supply circuit (1) is used for supplying power to the photoelectric switch;
the infrared receiving circuit (2) is used for receiving the signal transmitted by the transmitter and converting the signal into an infrared electric signal;
the voltage conversion circuit (3) is used for converting the infrared electric signal into a voltage signal;
and the signal intensity display circuit (4) is used for receiving the voltage signal, responding to the voltage signal and performing corresponding brightness display according to the magnitude of the voltage signal, wherein the brightness display is brighter when the voltage signal is larger, and the brightness display is darker when the voltage signal is smaller.
2. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 1, wherein: further comprising:
and the signal amplification circuit (5) is arranged between the infrared receiving circuit (2) and the voltage conversion circuit (3) and is used for receiving the infrared electric signal and amplifying the signal.
3. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 2, wherein: the signal amplification circuit (5) includes:
the preposed receiving amplification circuit (51) is used for receiving the infrared electric signal and outputting a pulse signal with the same frequency as the infrared electric signal; and
and the post-stage amplifying circuit (52) is used for receiving the pulse signal, amplifying the pulse signal and outputting the amplified pulse signal to the voltage conversion circuit (3).
4. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 1, wherein: the voltage conversion circuit (3) includes:
a drive circuit (31) for receiving the amplified pulse signal and outputting a voltage signal; and
a continuous output circuit (32) for receiving the voltage signal and continuously outputting the voltage signal in response to the voltage signal.
5. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 1, wherein: the signal strength display circuit (4) comprises:
a voltage dividing circuit (41) for dividing the received voltage signal; and
and a brightness display circuit (42) which responds to the voltage signal after voltage division and performs brightness display according to the intensity of the voltage signal.
6. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 4, wherein: further comprising:
the comparison output circuit (6) is used for comparing the continuously output voltage signal with the power supply voltage signal of the power supply circuit (1) and outputting a corresponding comparison signal according to a comparison result;
and the rear-stage output protection circuit (7) responds to the comparison signal and carries out overcurrent protection on the circuit.
7. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 6, wherein: further comprising:
and the filter circuit (8) is arranged between the continuous output circuit (32) and the comparison output circuit (6) and is used for filtering the received continuous voltage signal so as to output stable direct current voltage.
8. The infrared intensity indicating circuit of the infrared correlation type photoelectric switch of claim 6, wherein: the post-stage output protection circuit (7) includes:
and the indicating circuit (9) is used for prompting when the post-stage output protection circuit (7) generates overcurrent protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414322.1U CN211405994U (en) | 2020-03-27 | 2020-03-27 | Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414322.1U CN211405994U (en) | 2020-03-27 | 2020-03-27 | Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211405994U true CN211405994U (en) | 2020-09-01 |
Family
ID=72230276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020414322.1U Active CN211405994U (en) | 2020-03-27 | 2020-03-27 | Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211405994U (en) |
-
2020
- 2020-03-27 CN CN202020414322.1U patent/CN211405994U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105634306A (en) | AC-DC power output system | |
| CN110220541B (en) | Infrared detection device and infrared photoelectric sensor | |
| CN211405994U (en) | Infrared ray intensity indicating circuit of infrared correlation type photoelectric switch | |
| CN210015194U (en) | Thyristor switching switch control device for aging test | |
| CN210038197U (en) | Infrared correlation device | |
| CN115877064A (en) | Alternating current input isolation detection circuit, power supply circuit and electronic equipment | |
| CN111404249A (en) | Alternating current-direct current charging integrated machine gun head temperature monitoring circuit and monitoring method | |
| CN110976061A (en) | Paper full detection circuit and method capable of distinguishing infrared rays | |
| CN217769454U (en) | Short-circuit protection circuit and driving power supply | |
| CN115912976A (en) | Intelligent inverter circuit | |
| CN211530733U (en) | Output short-circuit overcurrent protection circuit of uninterrupted power supply | |
| CN201314939Y (en) | Route detection device | |
| CN211755926U (en) | Paper full detection circuit capable of distinguishing infrared rays | |
| CN211046898U (en) | Bidirectional thyristor low-temperature trigger device | |
| CN210775763U (en) | Relay on-off detection system for new energy automobile charging protection device | |
| CN216820151U (en) | Color temperature switching circuit and driving power supply based on discrete component | |
| CN221328601U (en) | Direct current power supply charging protection circuit | |
| CN211651659U (en) | Correlation type photoelectric sensor detection circuit | |
| CN210157194U (en) | Circuit for protecting photoelectric detector inside FTTH optical receiver | |
| CN217693288U (en) | Light source pulse driving circuit of industrial photoelectric switch sensor | |
| CN214959490U (en) | Starting-up control circuit and ultrasonic equipment | |
| CN220858407U (en) | Power amplifier equipment | |
| CN118100894B (en) | Anti-interference photoelectric sensor driving circuit and control method | |
| CN211826967U (en) | Mining dust suppression air water control system | |
| CN221281163U (en) | Relay actuation detection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |