CN211860054U - Infrared detection circuit of intelligence house - Google Patents
Infrared detection circuit of intelligence house Download PDFInfo
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- CN211860054U CN211860054U CN202020744951.0U CN202020744951U CN211860054U CN 211860054 U CN211860054 U CN 211860054U CN 202020744951 U CN202020744951 U CN 202020744951U CN 211860054 U CN211860054 U CN 211860054U
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
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- 230000005611 electricity Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
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Abstract
The utility model discloses an intelligent household infrared detection circuit, including infrared sensor, amplifier circuit, window comparator and control module, the output of infrared sensor connects the input of amplifier circuit, the output of amplifier circuit connects the input of window comparator, the output of window comparator connects the input of control module, the output of control module connects electric control switch, electric control switch connects the load; the utility model discloses the suitability is high, and stability is good, to the accurate processing of signal, avoids the false triggering, has good market using value.
Description
Technical Field
The utility model relates to an intelligence house field especially relates to an infrared detection circuit of intelligence house.
Background
Along with the development of the technology, the home is more and more intelligent, and the home comprises remote control door opening, induction door opening, remote control lifting curtain, automatic lamp opening and closing and the like, which are all in the daily life of people at present.
The infrared transmission technology is a technology for transmitting data by using infrared rays as a carrier. In daily life, the infrared transmission technology can be most typically used for controlling household appliances such as televisions, air conditioners and the like through infrared remote controllers. With the development of science and technology, the requirement of people on household intelligence is higher and higher continuously in the living standard of the public, and aspects such as light control, background music, security alarm and the like are switched to intelligent control.
The infrared detection is that one or more modulated parallel infrared beams are emitted by an infrared emitter, received by an infrared receiver and converted into signals to be sent to an alarm controller, and if an obstacle appears in a transmission interval, an alarm is triggered. Active infrared detection is widely applied to a household alarm system, for example, infrared transmitters and receivers are arranged at two ends of a balcony, and an alarm signal can be triggered immediately as long as a person crosses the balcony, so that a master can immediately give up whether the person is in a standby area. Because the infrared energy of the human body is different from the environment, when a person passes through a detection area, the detector senses the change of the infrared energy, a feedback signal is provided for the system, the linkage function of the intelligent home is matched, and the functions of lighting when the person comes and turning off the lamp when the person goes can be realized. For example, a passive infrared detector is arranged on the top of a door of a toilet, when a master gets up at night and walks into the toilet, light can be automatically turned on, and after the master leaves the toilet, the light is automatically turned off, so that the toilet is convenient and can achieve the effect of saving electricity.
An existing intelligent home sensing and control circuit and an infrared detection circuit can only be suitable for one scene, infrared light sources are not processed finely enough particularly after infrared light sources of people in activities are collected, signal loss or peak triggering is caused, and when the signals are processed, too high level values or too small level values can cause false triggering, unnecessary load work is caused, and electricity resources are wasted.
The prior art has defects and needs to be improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the defect that prior art exists, the utility model provides an infrared detection circuit of intelligence house.
The utility model provides a technical document, an infrared detection circuit of intelligence house, including infrared sensor, amplifier circuit, window comparator and control module, infrared sensor's output is connected amplifier circuit's input, amplifier circuit's output is connected the input of window comparator, the output of window comparator is connected control module's input, control module's output is connected electric control switch, electric control switch connects the load.
Preferably, the model of the infrared sensor is set to be RE200, the drain terminal of the infrared sensor is connected to the 5V power supply through a resistor R13, the source terminal of the infrared sensor is connected to the input terminal of the amplifying circuit, the grounding terminal of the infrared sensor is grounded, the source terminal of the infrared sensor is grounded through a capacitor C11, filtering is performed, noise is reduced, and the source terminal of the infrared sensor is grounded through a resistor R11 and used for stabilizing the voltage value of the source terminal of the infrared sensor.
Preferably, the amplifying circuit is a two-stage amplifying circuit, and is composed of two operational amplifiers, namely a positive-phase amplifier and an inverse-phase amplifier, the source terminal of the infrared sensor is connected to the positive-phase input terminal of the positive-phase amplifier, the inverse-phase input terminal of the positive-phase amplifier is grounded through a series resistor R12 and a capacitor C12, and the inverse-phase input terminal of the positive-phase amplifier is connected to the output terminal of the positive-phase amplifier through a resistor R14 and a capacitor C13 which are connected in parallel.
Preferably, the output terminal of the positive-phase amplifier is connected to the inverting input terminal of the inverting amplifier through a capacitor C14 and a resistor R19 connected in series, the inverting input terminal of the inverting amplifier is connected to the output terminal of the inverting amplifier through a capacitor C15 and a resistor R20 connected in parallel, the positive-phase input terminal of the inverting amplifier is connected to ground through a series and resistors R17 and R18, and is connected to a 5V power supply through resistors R16 and R15 connected in series.
In a preferred scheme, the positive-phase amplifier and the negative-phase amplifier are integrated into one device, the device is set to be a double operational amplifier, and the model is set to be LM 358.
Preferably, the window comparator includes an upper limit comparator, a lower limit comparator and two diodes, a positive phase input terminal of the upper limit comparator and a positive phase input terminal of the lower limit comparator are both connected to the output terminal of the inverting amplifier, an inverted phase input terminal of the upper limit comparator is connected to the middle terminals of the resistors R15 and R16, an inverted phase input terminal of the lower limit comparator is connected to the middle terminals of the resistors R17 and R18, and the output terminals of the upper limit comparator and the lower limit comparator are connected to the control module through positive diodes D10 and D9, respectively.
In a preferred embodiment, the upper limit comparator and the lower limit comparator are integrated into one device, and the device is configured as a dual operational amplifier and has a model set to LM 358.
In a preferred scheme, the positive-phase amplifier, the inverting amplifier, the upper limit comparator and the lower limit comparator are integrated into one device, the device is set to be a four-operational amplifier, and the model is set to be LM 324.
Preferably, control module sets up to the singlechip, the model of singlechip sets up to STM8S001J3, the output of window comparator is connected 1 pin of singlechip, 2 pin ground connections of singlechip, the 3 pin of singlechip passes through electric capacity C19 ground connection, 4 pins of singlechip connect the 5V power, 6 pins of singlechip connect electric control switch for control module' S output, 7 pins and 8 pins of singlechip connect the 5V power through resistance R23 and R22 respectively.
Preferably, the electric control switch is an electromagnetic switch or an MOS transistor.
Compared with the prior art, the infrared sensor is arranged to control the infrared light source to be converted into the level signal at the same time, filtering is carried out before signal processing is carried out, unnecessary noise is avoided at the source, and the trouble of later level signal processing is reduced; the two-stage amplification circuit is arranged to carry out two-stage amplification on the weak level signal, so that the difficulty of post-processing and identification is reduced; by arranging a window comparator, filtering the over-high or over-low invalid level signal to ensure the triggering accuracy; the load is connected with the electric control switch, and the load is controlled through the electric control switch, so that the adaptability of the infrared detection circuit is improved; the utility model discloses the suitability is high, and stability is good, to the accurate processing of signal, avoids the false triggering, has good market using value.
Drawings
Fig. 1 is an overall circuit diagram of the present invention.
Detailed Description
It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment, the infrared detection circuit for the smart home comprises an infrared sensor, an amplification circuit, a window comparator and a control module, wherein an output end of the infrared sensor is connected to an input end of the amplification circuit, an output end of the amplification circuit is connected to an input end of the window comparator, an output end of the window comparator is connected to an input end of the control module, an output end of the control module is connected to an electric control switch, and the electric control switch is connected to a load.
In the second embodiment, the model of the infrared sensor is set to be RE200, the drain terminal of the infrared sensor is connected to the 5V power supply through a resistor R13, the source terminal of the infrared sensor is connected to the input terminal of the amplifying circuit, the ground terminal of the infrared sensor is grounded, the source terminal of the infrared sensor is grounded through a capacitor C11, filtering is performed, noise is reduced, and the source terminal of the infrared sensor is grounded through a resistor R11 and used for stabilizing the voltage value of the source terminal of the infrared sensor.
Preferably, the amplifying circuit is a two-stage amplifying circuit, and is composed of two operational amplifiers, namely a positive-phase amplifier and an inverse-phase amplifier, the source terminal of the infrared sensor is connected to the positive-phase input terminal of the positive-phase amplifier, the inverse-phase input terminal of the positive-phase amplifier is grounded through a series resistor R12 and a capacitor C12, and the inverse-phase input terminal of the positive-phase amplifier is connected to the output terminal of the positive-phase amplifier through a resistor R14 and a capacitor C13 which are connected in parallel.
Preferably, the output terminal of the positive-phase amplifier is connected to the inverting input terminal of the inverting amplifier through a capacitor C14 and a resistor R19 connected in series, the inverting input terminal of the inverting amplifier is connected to the output terminal of the inverting amplifier through a capacitor C15 and a resistor R20 connected in parallel, the positive-phase input terminal of the inverting amplifier is connected to ground through a series and resistors R17 and R18, and is connected to a 5V power supply through resistors R16 and R15 connected in series.
In a preferred scheme, the positive-phase amplifier and the negative-phase amplifier are integrated into one device, the device is set to be a double operational amplifier, and the model is set to be LM 358.
Preferably, the window comparator includes an upper limit comparator, a lower limit comparator and two diodes, a positive phase input terminal of the upper limit comparator and a positive phase input terminal of the lower limit comparator are both connected to the output terminal of the inverting amplifier, an inverted phase input terminal of the upper limit comparator is connected to the middle terminals of the resistors R15 and R16, an inverted phase input terminal of the lower limit comparator is connected to the middle terminals of the resistors R17 and R18, and the output terminals of the upper limit comparator and the lower limit comparator are connected to the control module through positive diodes D10 and D9, respectively.
In a preferred embodiment, the upper limit comparator and the lower limit comparator are integrated into one device, and the device is configured as a dual operational amplifier and has a model set to LM 358.
In a preferred scheme, the positive-phase amplifier, the inverting amplifier, the upper limit comparator and the lower limit comparator are integrated into one device, the device is set to be a four-operational amplifier, and the model is set to be LM 324.
Preferably, control module sets up to the singlechip, the model of singlechip sets up to STM8S001J3, the output of window comparator is connected 1 pin of singlechip, 2 pin ground connections of singlechip, the 3 pin of singlechip passes through electric capacity C19 ground connection, 4 pins of singlechip connect the 5V power, 6 pins of singlechip connect electric control switch for control module' S output, 7 pins and 8 pins of singlechip connect the 5V power through resistance R23 and R22 respectively.
Preferably, the electric control switch is an electromagnetic switch or an MOS transistor.
The utility model discloses a theory of operation: after infrared sensor accuse surveyed the infrared ray that human radiation was sent out, infrared sensor produced the signal of telecommunication, and infrared sensor's source end level is pulled high, carries out the grow through first order amplifier circuit after, transmits to second amplifier circuit and is enlargied again, and second order amplifier circuit compares first order amplifier circuit, and the signal noise after being enlargied is less simultaneously, carries out the processing of height restriction through the window comparator, only when the signal stability through two-pole amplification in window comparator circuit sets up in the voltage threshold value scope, the window comparator output low level, when control module gathered the low level, then control module output high level to electrical switch, the power-on starts work on the load.
It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an infrared detection circuit of intelligence house, its characterized in that, includes infrared sensor, amplifier circuit, window comparator and control module, infrared sensor's output is connected amplifier circuit's input, amplifier circuit's output is connected the input of window comparator, the output of window comparator is connected control module's input, control module's output is connected electric control switch, electric control switch connects the load.
2. The infrared detection circuit of intelligent house of claim 1, characterized in that, the model of infrared sensor sets up to RE200, the drain terminal of infrared sensor passes through resistance R13 and connects the 5V power, the source terminal of infrared sensor is connected the input of amplifier circuit, the earthing terminal of infrared sensor is ground, and the source terminal of infrared sensor passes through electric capacity C11 ground connection, filters, reduces noise, and the source terminal of infrared sensor passes through resistance R11 ground connection, is used for stabilizing the voltage value of the source terminal of infrared sensor.
3. The infrared detection circuit for smart homes according to claim 2, wherein the amplification circuit is a two-stage amplification circuit, and is composed of two operational amplifiers, namely a positive-phase amplifier and a negative-phase amplifier, the source terminal of the infrared sensor is connected to the positive-phase input terminal of the positive-phase amplifier, the negative-phase input terminal of the positive-phase amplifier is grounded through a series resistor R12 and a capacitor C12, and the negative-phase input terminal of the positive-phase amplifier is connected to the output terminal of the positive-phase amplifier through a resistor R14 and a capacitor C13 which are connected in parallel.
4. The infrared detection circuit for smart homes according to claim 3, wherein the output end of the normal phase amplifier is connected to the inverting input end of the inverting amplifier through a capacitor C14 and a resistor R19 which are connected in series, the inverting input end of the inverting amplifier is connected to the output end of the inverting amplifier through a capacitor C15 and a resistor R20 which are connected in parallel, the normal phase input end of the inverting amplifier is connected to the ground through a series and resistors R17 and R18, and the output end of the inverting amplifier is connected to the 5V power supply through a series and resistors R16 and R15.
5. The infrared detection circuit of intelligent home as claimed in claim 4, wherein the normal phase amplifier and the reverse phase amplifier are integrated into one device, the device is configured as a dual operational amplifier, and the model is configured as LM 358.
6. The infrared detection circuit for smart homes according to claim 4, wherein the window comparator comprises an upper limit comparator, a lower limit comparator and two diodes, a positive phase input end of the upper limit comparator and a positive phase input end of the lower limit comparator are both connected to the output end of the inverting amplifier, a negative phase input end of the upper limit comparator is connected to the middle ends of the resistors R15 and R16, a negative phase input end of the lower limit comparator is connected to the middle ends of the resistors R17 and R18, and the output ends of the upper limit comparator and the lower limit comparator are respectively connected to the control module through positive diodes D10 and D9.
7. The infrared detection circuit for smart homes according to claim 6, wherein the upper limit comparator and the lower limit comparator are integrated into one device, the device is set as a dual operational amplifier, and the model is set as LM 358.
8. The infrared control circuit of a smart home as set forth in claim 6, wherein the positive phase amplifier, the negative phase amplifier, the upper limit comparator and the lower limit comparator are integrated into one device, the device is configured as a quad operational amplifier, and the model is configured as LM 324.
9. The infrared detection circuit of intelligence house of claim 6, characterized in that, control module sets up to the singlechip, the model of singlechip sets up to STM8S001J3, the output of window comparator is connected 1 pin of singlechip, 2 pins of singlechip ground connection, 3 pins of singlechip pass through electric capacity C19 ground connection, 4 pins of singlechip connect the 5V power, 6 pins of singlechip are control module' S output connection electric control switch, 7 pins and 8 pins of singlechip connect the 5V power through resistance R23 and R22 respectively.
10. An intelligent home infrared detection circuit according to any one of claims 1-9, wherein the electronic control switch is an electromagnetic switch or a MOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020744951.0U CN211860054U (en) | 2020-05-08 | 2020-05-08 | Infrared detection circuit of intelligence house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020744951.0U CN211860054U (en) | 2020-05-08 | 2020-05-08 | Infrared detection circuit of intelligence house |
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| Publication Number | Publication Date |
|---|---|
| CN211860054U true CN211860054U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020744951.0U Expired - Fee Related CN211860054U (en) | 2020-05-08 | 2020-05-08 | Infrared detection circuit of intelligence house |
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| Country | Link |
|---|---|
| CN (1) | CN211860054U (en) |
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2020
- 2020-05-08 CN CN202020744951.0U patent/CN211860054U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |