CN115480317A - Matrix type illumination detection device - Google Patents
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- CN115480317A CN115480317A CN202211257947.1A CN202211257947A CN115480317A CN 115480317 A CN115480317 A CN 115480317A CN 202211257947 A CN202211257947 A CN 202211257947A CN 115480317 A CN115480317 A CN 115480317A
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000005286 illumination Methods 0.000 title claims abstract description 41
- 239000011159 matrix material Substances 0.000 title claims abstract description 34
- 230000006698 induction Effects 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 12
- 230000006855 networking Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
- H05B47/13—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by using passive infrared detectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a matrix type illumination detection device and a matrix type illumination detection method, which belong to the field of detection circuits, and comprise a microprocessor, a human body infrared induction sensor, a luminance sensor and a PWM (pulse width modulation) output circuit; when the human body infrared induction sensor detects a human body, outputting a low level, otherwise, outputting a high level; the illuminance sensor is a photoresistor, the resistance value of the photoresistor changes under the influence of the intensity of illuminance, and the higher the illuminance, the smaller the resistance value, the weaker the illuminance and the larger the resistance value; the PWM output circuit is controlled by the microprocessor, and the brightness of the lighting equipment is controlled by controlling the occupancy ratio of the PWM output circuit; when the duty ratio of the output is larger, the brightness of the lighting device is higher, and the duty ratio of the output is smaller, the brightness of the lighting device is lower. The invention can solve the problem that the traditional induction sensor can only detect a local range, and reduce the misoperation of the lighting equipment; and each induction point is not required to be provided with an illuminance sensor, so that the equipment cost is reduced.
Description
Technical Field
The invention relates to the technical field of detection circuits, in particular to a matrix type illumination detection device.
Background
With the development of the times, the illuminating lamp becomes an indispensable part in our lives. Inside buildings, the number and variety of lighting devices are also quite large; through data statistics, the energy consumption of the lighting equipment accounts for about 20% of the total energy consumption of the building. However, because the lighting devices are distributed in various parts in the building, such as rooms, corridors, halls, garages and the like, the situations of 'no-man lights' and 'long-time lights' often occur, so that the lighting devices are always on, and the energy waste is caused.
In order to reduce the waste of illumination, infrared human body induction sensors or microwave radar induction sensors are mostly arranged in illumination equipment in the market, so that the illumination lamp is turned on when people are sensed, and is turned off when people are not sensed for a period of time; but the detection range of the infrared human body induction sensor is smaller, and the detection precision is lower; in places with larger space, such as meeting rooms, corridors, garages and the like, only local lighting equipment can be turned on, and the use feeling is poor; if the action amplitude of the human body is small, the infrared human body induction sensor cannot correctly detect the human body, so that the lighting equipment malfunctions.
Disclosure of Invention
The invention aims to provide a matrix type illumination detection device to solve the problems of the background art.
In order to solve the technical problem, the invention provides a matrix type illumination detection device which comprises a microprocessor, a human body infrared induction sensor, a luminance sensor and a PWM output circuit, wherein the microprocessor is connected with the human body infrared induction sensor;
when the human body infrared induction sensor detects a human body, outputting a low level, otherwise, outputting a high level;
the illuminance sensor is a photoresistor, the resistance value of the photoresistor changes under the influence of the illuminance intensity, the higher the illuminance, the smaller the resistance value, the weaker the illuminance and the larger the resistance value;
the PWM output circuit is controlled by the microprocessor, and the brightness of the lighting equipment is controlled by controlling the occupation ratio of the PWM output circuit; when the duty ratio of the output is larger, the brightness of the lighting device is higher, and the duty ratio of the output is smaller, the brightness of the lighting device is lower.
In one embodiment, the matrix illumination detection device further comprises a wireless communication module connected to the microprocessor; the wireless communication module adopts a 2.4G wireless transceiver chip and mainly carries out wireless networking communication.
In one embodiment, the human body infrared sensor is a passive infrared sensor, and comprises a fresnel lens, a pyroelectric infrared sensor and a signal processing circuit which are connected in series; according to the wavelength characteristics of human infrared rays, infrared rays radiated from a human body are detected by a pyroelectric type infrared sensor, and infrared rays in wave bands other than the human body are removed.
In one embodiment, the human body infrared induction sensor comprises a probe P1, resistors R1-R2, capacitors C1-C3 and a triode Q1;
the first end of the probe P1 is grounded, the second end of the probe P1 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is simultaneously connected with the first end of the capacitor C3, the first end of the resistor R1 and the base electrode of the triode Q1; the emitting electrode of the triode Q1 is grounded, and the collector electrode of the triode Q1 is connected with the second end of the resistor R1;
the third end of the probe P1 is simultaneously connected with the first end of a capacitor C1 and the first end of a resistor R2, the second end of the capacitor C1 is grounded, and the second end of the resistor R2 is simultaneously connected with the second end of the capacitor C3 and the second end of the resistor R1;
and the first end of the capacitor C1 and the first end of the resistor R2 are both connected with a power supply VCC.
In one embodiment, the illuminance sensor comprises a light-transmitting sheet, a photosensitive diode and a signal circuit which are connected in series, wherein a temperature compensation circuit is connected between the photosensitive diode and the signal circuit; according to the hot spot effect principle, in a linear range, the output signal of the photosensitive diode is in direct proportion to the received solar radiation degree, and the output signal of the photosensitive diode is converted into an analog quantity signal after being processed and then is output to the microprocessor.
In one embodiment, the illuminance sensor comprises resistors R3-R6, a photodiode D, and a transistor VT1;
the collector of the triode VT1 is connected with a power VCC through a resistor R5, the emitter is grounded, and the base is connected with the cathode of the photodiode D;
the anode of the photosensitive diode D is simultaneously connected with the second end of the resistor R3 and the first end of the resistor R4; the first end of the resistor R3 is connected with a power supply VCC, and the second end of the resistor R4 is grounded through a resistor R6.
In one embodiment, the resistor R6 is a variable resistor.
In one embodiment, the PWM output circuit adjusts for changes in signal, energy by adjusting for changes in duty cycle.
In one embodiment, the 2.4G wireless transceiver chip is of a model TSSOP-16, and includes a radio frequency front end and a digital baseband, and supports adjustable power, and a digital extension communication mechanism is adopted for reception.
The matrix type illumination detection device and method provided by the invention have the following beneficial effects:
(1) A wireless networking technology is built in, the separated sensing nodes are subjected to networking communication to form point, line and plane matrix type sensing, and sensing messages can be relatively transmitted and shared among networks, so that a sensing detection area is wider, and the detection precision is higher;
(2) The built-in illuminance sensor can sense the ambient illuminance intensity in real time, so that the brightness of the lighting equipment is dynamically adjusted according to the illuminance intensity, the power consumption of the lighting equipment is reduced, and the energy-saving effect is achieved;
(3) The illuminance data of one or more induction nodes in the matrix induction network can be selected as a basis, and each detection device is not required to be provided with an illuminance sensor, so that the equipment cost is reduced; if the illumination sensor of the sensing node is in fault or damaged, the data of other sensing nodes can be borrowed, and the fault tolerance rate and the robustness of the system are improved.
Drawings
FIG. 1 is a schematic diagram of a matrix illumination detection device according to the present invention;
FIG. 2 is a block diagram of a human body infrared sensor;
FIG. 3 is a schematic circuit diagram of the human body infrared sensor;
FIG. 4 is a block diagram of the structure of the light intensity sensor;
FIG. 5 is a schematic circuit diagram of the illuminance sensor;
fig. 6 is a schematic structural diagram of a wireless communication module;
fig. 7 is a schematic diagram of a wireless parameter configuration method of a wireless communication module;
fig. 8 is a schematic flow chart of a matrix illumination detection method provided in the present invention.
Detailed Description
The matrix illumination detection device provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a matrix type illumination detection device, the overall principle framework of which is shown in figure 1, and the matrix type illumination detection device comprises a microprocessor, a human body infrared induction sensor, a luminance sensor and a PWM (pulse-width modulation) output circuit; when the human body infrared induction sensor detects a human body, outputting a low level, otherwise, outputting a high level; the illuminance sensor is a photoresistor, the resistance value of the photoresistor changes under the influence of the illuminance intensity, the higher the illuminance, the smaller the resistance value, the weaker the illuminance and the larger the resistance value; the PWM output circuit is controlled by the microprocessor, and the brightness of the lighting equipment is controlled by controlling the occupancy ratio of the PWM output circuit; when the duty ratio of the output is larger, the brightness of the lighting device is higher, and the duty ratio of the output is smaller, the brightness of the lighting device is lower.
The human body infrared sensor is a passive infrared sensor, and the structural block diagram of the human body infrared sensor is shown in fig. 2, and the human body infrared sensor comprises a Fresnel lens, a pyroelectric infrared sensor and a signal processing circuit which are connected in series. According to the experiment, the infrared rays can be radiated by objects with temperature in nature, and the wavelength of the infrared rays radiated by a human body is mainly concentrated to about 900-1000 nm; according to the wavelength characteristics of human infrared rays, infrared rays radiated by a human body are detected by a pyroelectric type infrared sensor, and infrared rays in wave bands other than the human body radiation are removed.
FIG. 3 is a schematic diagram of a specific circuit structure of the human body infrared sensor, which includes a probe P1, resistors R1-R2, capacitors C1-C3 and a triode Q1; the first end of the probe P1 is grounded, the second end of the probe P1 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is simultaneously connected with the first end of the capacitor C3, the first end of the resistor R1 and the base electrode of the triode Q1; the emitting electrode of the triode Q1 is grounded, and the collector electrode of the triode Q1 is connected with the second end of the resistor R1; the third end of the probe P1 is simultaneously connected with the first end of a capacitor C1 and the first end of a resistor R2, the second end of the capacitor C1 is grounded, and the second end of the resistor R2 is simultaneously connected with the second end of the capacitor C3 and the second end of the resistor R1; and the first end of the capacitor C1 and the first end of the resistor R2 are both connected with a power supply VCC.
The illuminance sensor comprises a light-transmitting sheet, a photosensitive diode and a signal circuit which are connected in series, the structural block diagram of the illuminance sensor is shown in fig. 4, and a temperature compensation circuit is connected between the photosensitive diode and the signal circuit. According to the hot spot effect principle, in a linear range, the output signal of the photosensitive diode is in direct proportion to the received solar radiation degree, and the output signal of the photosensitive diode is converted into an analog quantity signal after being processed and then is output to the microprocessor;
fig. 5 is a schematic diagram showing a specific circuit structure of the illuminance sensor, which includes resistors R3 to R6, a photodiode D, and a transistor VT1, wherein the resistor R6 is a variable resistor. The collector of the triode VT1 is connected with a power VCC through a resistor R5, the emitter is grounded, and the base is connected with the cathode of the photodiode D; the anode of the photosensitive diode D is simultaneously connected with the second end of the resistor R3 and the first end of the resistor R4; the first end of the resistor R3 is connected with a power supply VCC, and the second end of the resistor R4 is grounded through a resistor R6.
The PWM is Pulse Width Modulation (Pulse Width Modulation), and the PWM output circuit adjusts changes such as signal and energy by adjusting changes in duty ratio. In the dimming circuit, the duty ratio is a little larger, and the brightness of the lighting equipment is a little larger; the duty ratio is a little bit smaller, and the brightness of the lighting equipment is a little bit smaller; meanwhile, the PWM frequency is larger than the human eye identification frequency, so that the flicker phenomenon cannot occur.
The matrix type illumination detection device also comprises a wireless communication module which is connected with the microprocessor; the wireless communication module adopts a 2.4G wireless transceiver chip and mainly carries out wireless networking communication. As shown in fig. 6, the 2.4G wireless transceiver chip is of a model TSSOP-16, and includes a radio frequency front end and a digital baseband, the support power is adjustable, and the receiving adopts a digital extension communication mechanism, so that excellent transceiving performance can be achieved in a complex environment and under a strong interference condition. The wireless parameter configuration method of the wireless communication module is shown in fig. 7.
The invention further provides a matrix type illumination detection method on the basis of the matrix type illumination detection device, and the flow of the matrix type illumination detection method is shown in fig. 8.
The matrix type illumination detection device provided by the invention supports wireless communication, a wireless networking protocol is built in, the detection device and other detection devices can be mutually networked, and the data of a single detection device can be transmitted to a plurality of detection devices; the illumination detection device can dynamically divide the area, the points are connected with one another to form a line, the lines are connected with one another to form a plane, and different control strategies can be set for different divisions; the illumination detection is supported, the illumination in the environment can be detected in real time, and the brightness of the lighting equipment is dynamically adjusted according to the intensity of the illumination; the matrix type illumination detection device can designate the illuminance of one or more detection devices as a basis, and transmits the average value to other detection devices in the area, and each detection device is not required to be provided with an illuminance sensor, so that the equipment cost can be reduced; if the illumination sensor of the sensing node is in fault or damaged, the data of other sensing nodes can be borrowed, so that the fault tolerance rate and the robustness of the system are improved; the illumination detection device can be added into the matrix induction network or separated from the matrix induction network at any time.
The matrix type illumination detection device can formulate a multi-gear dimming strategy, and when a human body is not detected, the brightness of the illumination device is reduced to 50%; when no human body is detected within 10 minutes, reducing the brightness of the lighting equipment to 20%; when no human body was still detected within 20 minutes, the luminaire brightness was reduced to 0%. Once a human body is detected, the brightness of the lighting device is raised to 50%, and once again a human body is detected, the brightness of the lighting device is raised to 100%.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (9)
1. A matrix type illumination detection device is characterized by comprising a microprocessor, a human body infrared induction sensor, a luminance sensor and a PWM output circuit;
when the human body infrared induction sensor detects a human body, outputting a low level, otherwise, outputting a high level;
the illuminance sensor is a photoresistor, the resistance value of the photoresistor changes under the influence of the intensity of illuminance, and the higher the illuminance, the smaller the resistance value, the weaker the illuminance and the larger the resistance value;
the PWM output circuit is controlled by the microprocessor, and the brightness of the lighting equipment is controlled by controlling the occupancy ratio of the PWM output circuit; when the duty ratio of the output is larger, the brightness of the lighting device is higher, and the duty ratio of the output is smaller, the brightness of the lighting device is lower.
2. The matrix illumination detection device of claim 1 further comprising a wireless communication module connected to said microprocessor; the wireless communication module adopts a 2.4G wireless transceiver chip and mainly carries out wireless networking communication.
3. The matrix illumination detection device as claimed in claim 1, wherein said human body infrared sensor is a passive infrared sensor, which includes a fresnel lens, a pyroelectric infrared sensor and a signal processing circuit connected in series; according to the wavelength characteristics of human infrared rays, infrared rays radiated from a human body are detected by a pyroelectric type infrared sensor, and infrared rays in wave bands other than the human body are removed.
4. The matrix illumination detection device according to claim 3, wherein said human body infrared sensor comprises a probe P1, resistors R1-R2, capacitors C1-C3 and a triode Q1;
the first end of the probe P1 is grounded, the second end of the probe P1 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is simultaneously connected with the first end of the capacitor C3, the first end of the resistor R1 and the base electrode of the triode Q1; the emitting electrode of the triode Q1 is grounded, and the collector electrode of the triode Q1 is connected with the second end of the resistor R1;
the third end of the probe P1 is simultaneously connected with the first end of a capacitor C1 and the first end of a resistor R2, the second end of the capacitor C1 is grounded, and the second end of the resistor R2 is simultaneously connected with the second end of the capacitor C3 and the second end of the resistor R1;
and the first end of the capacitor C1 and the first end of the resistor R2 are both connected with a power supply VCC.
5. The matrix illumination detection device according to claim 1, wherein said light intensity sensor comprises a light-transmitting sheet, a photodiode and a signal circuit connected in series, and a temperature compensation circuit is connected between said photodiode and said signal circuit; according to the hot spot effect principle, in a linear range, the output signal of the photosensitive diode is in direct proportion to the received solar radiation degree, and the output signal of the photosensitive diode is converted into an analog quantity signal after being processed and then is output to the microprocessor.
6. The matrix illumination detection device according to claim 5, wherein said light level sensor comprises resistors R3-R6, a photodiode D, a transistor VT1;
the collector of the triode VT1 is connected with a power VCC through a resistor R5, the emitter is grounded, and the base is connected with the cathode of the photodiode D;
the anode of the photosensitive diode D is simultaneously connected with the second end of the resistor R3 and the first end of the resistor R4; the first end of the resistor R3 is connected with a power supply VCC, and the second end of the resistor R4 is grounded through a resistor R6.
7. The matrix illumination detection device of claim 6, wherein said resistor R6 is a variable resistor.
8. The matrix illumination detection device of claim 1 wherein said PWM output circuit adjusts for changes in signal, energy by adjusting for changes in duty cycle.
9. The matrix illumination detection device according to claim 2, wherein said 2.4G wireless transceiver chip is of type TSSOP-16, and includes an rf front end and a digital baseband, and supports power adjustment, and the receiving uses a digital extension communication mechanism.
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