Human body pyroelectric infrared induction control circuit applicable to electrodeless lamps

A human body pyroelectric and infrared sensing technology, which is applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve the problems of shortening the life of non-resistive loads, and achieve the effects of improving receiving sensitivity, long life, and accurate processing

Inactive Publication Date: 2012-10-03
常州菲尔普照明电器有限公司
0 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a human body pyroelectric infrared induction control circuit suitable for electrodeless lamps to solve the problem that the tradit...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Method used

A kind of human body pyroelectric infrared induction control circuit suitable for electrodeless lamp use of the present embodiment, when someone enters the monitoring range, accepts the human body pyroelectric infrared induction signal by the infrared signal processing circuit, and filters out after amplifying the received signal interference, the output signal is sent to the output control circuit, and then the electrodeless lamp is turned on. In the infrared signal processing circuit, the charging capacitor E7 filters out the clutter of the power supply, so that the infrared pyroelectric human body sensor U3 works stably, and the signal clutter of the infrared pyroelectric human body sensor U3 is filtered out through the grounding of the capacitor C4 and the resistor R8. It makes the infrared signal processing more accurate detection, and through two stages of amplification during processing, the gain can be adjusted to improve the rec...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention provides a human body pyroelectric infrared induction control circuit applicable to electrodeless lamps, which comprises a clock circuit, an optical detection circuit, an infrared signal processing circuit, a power circuit and an output control circuit. The infrared signal processing circuit receives human body pyroelectric infrared induction signals, amplifies the received signals then filters interference, and then outputs the signals to the output control circuit. The human body pyroelectric infrared induction control circuit filters detection signals through the infrared signal processing circuit, so as to ensure that the detection signals are more accurately processed, and gain can be variable during processing after magnification at two stage, so that the receive sensitivity of human body pyroelectric infrared induction is improved, and further the limited range of monitoring can be adjusted. The human body pyroelectric infrared induction control circuit is not operated at day time, is energy-saving and intelligent, is applicable to non-resistive load, such as electrodeless lamps and the like, and has a long service life.

Application Domain

Technology Topic

Image

  • Human body pyroelectric infrared induction control circuit applicable to electrodeless lamps
  • Human body pyroelectric infrared induction control circuit applicable to electrodeless lamps
  • Human body pyroelectric infrared induction control circuit applicable to electrodeless lamps

Examples

  • Experimental program(1)

Example Embodiment

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0019] Such as figure 1 , figure 2 with image 3 As shown, this embodiment provides a human body pyroelectric infrared induction control circuit suitable for electrodeless lamps, including a clock circuit 1, a light detection circuit 2, an infrared signal processing circuit 3, a power supply circuit 4, and an output control circuit 5. The infrared signal processing circuit 3 receives the human body pyroelectric infrared induction signal, amplifies the received signal, filters out interference, and outputs the signal to the output control circuit 5; the light detection circuit 2 receives the intensity signal of the sunlight and outputs the signal to the The infrared signal processing circuit 3; the clock circuit 1 includes a system clock circuit and a timing clock circuit, the system clock circuit sends out the operation of the light detection circuit 2, the infrared signal processing circuit 3, the power supply circuit 4 and the output control circuit 5 Timing signal, the timing clock circuit sends out a time signal when the electrodeless lamp is triggered to light up;
[0020] The infrared signal processing circuit 3 includes a noise filtering circuit, a signal amplifying circuit, and a sensor U2. The noise filtering circuit includes an infrared pyroelectric human body sensor U3, a charging capacitor E7, a resistor R8, and a capacitor C4. The input terminal of the infrared pyroelectric human body sensor U3 is grounded, the ground terminal of the infrared pyroelectric human body sensor U3 is connected to one end of the resistor R8 and the capacitor C4, and the other ends of the resistor R8 and the capacitor C4 are both grounded, The output terminal of the infrared pyroelectric human body sensor U3 is connected with the reference output terminal of the sensor U2 and one end of the charging capacitor E7, and the other end of the charging capacitor E7 is grounded;
[0021] The signal amplifying circuit includes a charging capacitor E5, an adjustable resistor W3, a capacitor C3, a resistor R7, a charging capacitor E4, a charging capacitor E3, a resistor R6, a capacitor C2, and a resistor R5. The adjustable resistor W3 is connected to one end of the charging capacitor E5 , The other end of the charging capacitor E5 is grounded, the adjustable resistor W3 is connected to the N-1 pin of the sensor U2, the capacitor C3 and the resistor R7, and the capacitor C3 and the resistor R7 are both connected to the UOU1 pin of the sensor U2 and charging Capacitor E4, the charging capacitor E4 is connected to the N-2 pin of the sensor U2, the capacitor C2 and the resistor R5 through the resistor R6, the capacitor C2 and the resistor R5 are both connected to the UOU2 pin of the sensor U2, and one end of the charging capacitor E3 Connect the N+2 pin of the sensor U2, and the other end of the charging capacitor E3 is grounded;
[0022] The system clock circuit includes a resistor R9 and a capacitor C5, one end of the capacitor C5 is grounded, the other end of the capacitor C5 is connected to one end of the resistor R9 and the TB pin of the sensor U2, and the other end of the resistor R9 is connected to Adjustable resistor W2 and a power supply circuit. The timing clock circuit includes a resistor R10, a capacitor C6 and an adjustable resistor W2. One end of the capacitor C6 is grounded, and the other end of the capacitor C6 is connected to one end of the resistor R10 and the TC1 lead of the sensor U2. Pin, the other end of the resistor R10 is connected to an adjustable resistor W2;
[0023] The light detection circuit 2 includes a photoresistor RG, a charging capacitor E6, and an adjustable resistor W1. One end of the charging capacitor E6 is grounded, and the other end of the charging capacitor E6 is connected to the photoresistor RG and the CDS pin of the sensor U2. One end of the adjustable resistor W1 is grounded, and the other end of the adjustable resistor W1 is connected to a photosensitive resistor RG.
[0024] The output control circuit 5 includes a resistor R4, a transistor Q2, a resistor R3, a transistor Q1, a diode D6, and a relay K. When someone enters the monitoring range of the controller, the output voltage of pin 11 of the sensor U2 is limited by the resistor R4. The CE pole of the transistor Q2 is turned on, the B pole of the transistor Q1 is low, the transistor Q1 is off, the relay K does not work, and the electrodeless light is on.
[0025] The power supply circuit 4 includes a DC stabilized power supply, a power display circuit, and a transformer circuit. The DC stabilized power supply includes a thermistor NTC, a capacitor C1, a resistor R1, a zener tube D1, a zener tube D2, a diode D3, Diode D4 and thermistor NTC play a role in preventing input voltage surges, protecting Zener tube D1 and Zener tube D2. Capacitor C1 and resistor R1 are connected in parallel to limit the total current input of the circuit, forming a simple and practical step-down circuit, Zener tube D1, voltage stabilizer tube D2, diode D3, and diode D4 form a bridge-type stabilized rectifier circuit to ensure the input of 12V DC stabilized power supply to the subsequent circuit. The power display circuit includes a resistor R2 and a light emitting diode D5, the cathode of the light emitting diode D5 is connected to the output control circuit 5, the anode of the light emitting diode D5 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to The charging capacitor E1, the sensor U1, the diode D3, the diode D4 and the output control circuit 5, if there is a 12V DC regulated power output, the light emitting diode D5 will emit light to show that the circuit is in the power supply state, and the resistance R2 will give the light emitting diode D5 Current limit, to protect the LED D5 from being damaged during long-term operation. The voltage transformation circuit includes a sensor U1, a charging capacitor E1, and a charging capacitor E2. The ground terminal of the sensor U1, the charging capacitor E1 and the charging capacitor E2 are grounded, and the charging capacitor E2 is connected to the sensor U1 and the clock circuit 1. The voltage transformer circuit converts the output 12V DC regulated power into 5V DC regulated power to supply power to the sensor U2. The charging capacitor E1 and the charging capacitor E2 function as filtering and energy storage, making the sensor U2 work more stable.
[0026] This embodiment is a human body pyroelectric infrared induction control circuit suitable for use in electrodeless lamps. When someone enters the monitoring range, it receives the human body pyroelectric infrared induction signal through the infrared signal processing circuit, amplifies the received signal and filters out the interference, and then outputs The signal is given to the output control circuit, which in turn makes the electrodeless lamp light. In the infrared signal processing circuit, the charging capacitor E7 filters out the power noise, so that the infrared pyroelectric human body sensor U3 works stably, and the infrared pyroelectric human body sensor U3 is grounded through the capacitor C4 and the resistor R8 to filter out the signal noise of the infrared pyroelectric human body sensor. The infrared signal is processed more accurately and detected, and after two stages of amplification during processing, the gain can be adjusted to improve the receiving sensitivity of the pyroelectric infrared induction of the human body, and the limited range of monitoring can be adjusted by adjusting the adjustable resistor W3.
[0027] Under normal circumstances, people emit infrared rays with a specific wavelength of about 10um. The infrared pyroelectric human body sensor U3 can specifically detect the existence of such infrared. In this way, U3 is only sensitive to infrared with a specific wavelength of about 10um. Therefore, it is difficult for animals other than humans to output infrared signals from the infrared pyroelectric human body sensor U3.
[0028] At the same time, in the daytime, according to the light intensity of the photoresistor RG, its resistance is small, so that the cadmium sulfide CDS sensor inside the sensor U2 suppresses the output of the control circuit in the daytime, so as to achieve the effect of energy saving and intelligence.
[0029] The beneficial effect of this embodiment is: this embodiment is a human body pyroelectric infrared induction control circuit suitable for electrodeless lamps. The detection signal is filtered through the infrared signal processing circuit, so that the detection signal can be processed more accurately, while After two-stage amplification, the gain can be adjusted to improve the receiving sensitivity of the pyroelectric infrared sensor of the human body, and then the limited range of monitoring can be adjusted. This kind of human body pyroelectric infrared induction control circuit suitable for induction lamps does not work in daylight, energy-saving and intelligent, suitable for non-resistive loads such as induction lamps, and has a long life.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Classification and recommendation of technical efficacy words

  • Accurate processing
  • Improve receiver sensitivity

Image processing method and device

Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products