CN115032624A - Microwave detector for energy-saving lamp and control method thereof - Google Patents
Microwave detector for energy-saving lamp and control method thereof Download PDFInfo
- Publication number
- CN115032624A CN115032624A CN202210962268.8A CN202210962268A CN115032624A CN 115032624 A CN115032624 A CN 115032624A CN 202210962268 A CN202210962268 A CN 202210962268A CN 115032624 A CN115032624 A CN 115032624A
- Authority
- CN
- China
- Prior art keywords
- module
- microwave
- signal
- saving lamp
- energy
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a microwave detector for an energy-saving lamp and a control method thereof, belonging to the technical field of sensors. The microwave detector for the energy-saving lamp comprises a photosensitive power supply module, an MCU module, a dual-frequency transmitting module, a receiving antenna and a signal processing module, wherein the MCU module is respectively electrically connected with the dual-frequency transmitting module and the signal processing module, and the receiving antenna is electrically connected with the signal processing module. When the pedestrian is not detected, a low-frequency microwave signal is adopted for detection, when an object to be detected enters a range of 20 meters and has the action characteristics of a human body, the dual-frequency transmitting module adopts two-frequency microwave signal for detection, and as long as an echo signal generated by one of the two-frequency microwave signal detects that the pedestrian enters a range of 10 meters, the MCU module immediately sends control information to control the energy-saving lamp to be turned on.
Description
Technical Field
The invention relates to a microwave detector for an energy-saving lamp and a control method thereof, belonging to the technical field of sensors.
Background
The microwave refers to electromagnetic wave with the frequency of 300MHz-3000GHz and the wavelength of 1-1000mm, has the characteristics of easy clustering, high directionality and straight line propagation, and can be used for transmitting high-frequency signals in unobstructed sight free space. The microwave frequency is higher than the frequency of a general radio wave, and is also generally called "ultra high frequency electromagnetic wave". Microwaves also have a wave-particle duality as an electromagnetic wave. The basic properties of microwaves are generally represented by three characteristics, namely penetration, reflection and absorption.
A microwave sensor is a device that detects some physical quantity using the characteristics of microwaves. Including sensing the presence of objects, speed of movement, distance, angle, etc. The microwave emitted by the transmitting antenna is absorbed or reflected when encountering the object to be measured, so that the power is changed. If the receiving antenna is used to receive the microwave passing through or reflected from the object to be measured, and convert it into electric signal, and then the electric signal is processed by the measuring circuit, the microwave detection is realized.
At present, some energy-saving lamps arranged at two sides of a road, a passageway and some unusual positions need to be controlled by using related control devices such as a microwave sensor, so that the functions of turning on the lamps when people pass through and turning off the lamps when no people pass through are realized, and the aim of further saving energy is fulfilled. However, the microwave detector used by the existing energy-saving lamp is low in detection precision and easy to interfere, and the energy-saving lamp cannot be timely lightened due to the fact that people often pass by the microwave detector because the microwave detector is not detected or interfered, so that the lighting effect is poor, and the passing safety of the people at night is affected. Therefore, the research and development of a microwave detector for an energy-saving lamp with accurate control and good anti-interference performance is a technical problem to be urgently solved by technical personnel in the field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a microwave detector for an energy-saving lamp and a control method thereof, wherein the microwave detector is accurate in control and good in anti-interference performance.
The technical scheme provided by the invention for solving the technical problems is as follows: a microwave detector for an energy-saving lamp comprises a photosensitive power supply module, an MCU module, a dual-frequency transmitting module, a receiving antenna and a signal processing module;
the photosensitive power supply module is electrically connected with the MCU module and used for supplying power to the microwave detector for the energy-saving lamp after the light ray is lower than an illumination intensity threshold value P, wherein the illumination intensity threshold value P is 2-30 lx;
the dual-frequency transmitting module is respectively electrically connected with the MCU module and the signal processing module and is used for transmitting microwave signals after receiving the control signals of the MCU module;
the receiving antenna is electrically connected with the signal processing module and is used for receiving echo signals reflected by the object;
the signal processing module is respectively electrically connected with the MCU module and the dual-frequency transmitting module and is used for receiving the microwave signal and the echo signal and obtaining a difference signal based on the microwave signal and the echo signal;
the MCU module is used for controlling the dual-frequency transmitting module to transmit microwave signals, receiving the difference signals fed back by the signal processing module and judging the position characteristics and the action characteristics of the measured object based on the Doppler effect.
The improvement of the technical scheme is as follows: the signal processing module comprises a mixing detection unit, a signal amplification module and a signal conversion module which are electrically connected in sequence;
the frequency mixing detection unit is used for obtaining a Doppler intermediate frequency signal based on the microwave signal and the echo signal reflected by the object;
the signal amplification module is used for amplifying the Doppler intermediate frequency signal;
the signal conversion module converts the Doppler intermediate frequency signal into a difference signal corresponding to the action characteristic and the position characteristic.
The improvement of the technical scheme is as follows: the photosensitive power supply module comprises a direct current power supply module and a photosensitive resistor control module;
the direct current power supply module is used for supplying power to the microwave detector for the energy-saving lamp through a circuit;
the photoresistor control module is used for controlling the circuit to be conducted after the light is lower than the illumination intensity threshold value P.
The improvement of the technical scheme is as follows: the photoresistance control module is a photoresistance control circuit, the photoresistance control circuit comprises a photoresistance RG, a resistor R1, a sliding rheostat R, an operational amplifier A and a resistor R2, the resistor R1 and the photoresistance RG are connected between the positive pole and the negative pole of the direct-current power supply module in series, the positive input end of the operational amplifier A is electrically connected with the circuit between the photoresistance RG and the resistor R1, the reverse input end of the operational amplifier A is electrically connected with the sliding end of the sliding rheostat R, two ends of the sliding rheostat R are respectively electrically connected with the positive pole and the negative pole of the direct-current power supply module, the output end of the operational amplifier A is electrically connected with one end of the resistor R2, one end of an equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the other end of the resistor R2, and the other end of the equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the negative pole of the direct-current power supply module.
The improvement of the technical scheme is as follows: the dual-frequency transmitting module comprises a first transmitting module and a second transmitting module, the first transmitting module comprises a first oscillating module and a first transmitting antenna which are electrically connected with each other, and the second transmitting module comprises a second oscillating module and a second transmitting antenna which are electrically connected with each other;
the first oscillation module and the second oscillation module are used for generating an excitation signal after receiving a control signal of the MCU module;
the first transmitting antenna and the second transmitting antenna are used for transmitting microwave signals to the surroundings.
The improvement of the technical scheme is as follows: the first oscillating module and the second oscillating module are both oscillating transistors; the first transmitting antenna, the second transmitting antenna and the receiving antenna are all microstrip patch antennas.
The invention discloses a control method of a microwave detector for an energy-saving lamp, which comprises the following steps:
(1) when the light is higher than the illumination intensity threshold value P, the photosensitive power supply module does not supply power, and the microwave detector for the energy-saving lamp does not work;
(2) when the light is lower than the illumination intensity threshold value P, the photosensitive power supply module starts to supply power, and the microwave detector for the energy-saving lamp starts to work;
(3) the MCU module controls the first oscillation module to generate an excitation signal and transmits a microwave signal to the periphery through the first transmitting antenna, wherein the frequency of the microwave signal is 1.2-1.8 GHz;
(4) the receiving antenna receives echo signals reflected by an object, the mixing detection unit obtains Doppler intermediate frequency signals based on the microwave signals and the echo signals reflected by the object, the signal amplification module amplifies the Doppler intermediate frequency signals, and the signal conversion module converts the Doppler intermediate frequency signals into difference signals corresponding to action characteristics and position characteristics;
(5) the MCU module judges the action characteristics and the position characteristics of the object to be measured through the difference signals, and when the position characteristics of the object to be measured enter the range of a first threshold value D1 and have the action characteristics of a human body, the MCU module controls the second oscillation module to generate an excitation signal and transmits microwave signals to the periphery through the second transmitting antenna, wherein the frequency of the microwave signals is 6.8-7.8 GHz;
(6) the receiving antenna simultaneously receives echo signals of two frequencies reflected by an object, and the frequency mixing detection unit obtains two Doppler intermediate frequency signals based on the microwave signals of the two frequencies and the echo signals of the two frequencies reflected by the object;
(7) the MCU module respectively judges the action characteristic and the position characteristic of the object to be detected through the two difference signals, and sends control information to control the energy-saving lamp to be turned on as long as the action characteristic and the position characteristic obtained by one difference signal show that the position characteristic of the object to be detected enters the range of a second threshold value D2 and has the action characteristic of a human body;
(8) when the energy-saving lamp is turned on, the MCU module continues to respectively judge the action characteristic and the position characteristic of the measured object through the two difference signals, and as long as the action characteristic and the position characteristic obtained by one difference signal show that the position characteristic of the measured object exceeds the range of a second threshold value D2, the MCU module sends out control information to control the energy-saving lamp to be turned off after 10-15 seconds; and as long as the position characteristics of the measured object obtained by one difference signal show that the measured object exceeds the range of the first threshold value D1, the MCU module controls the second oscillation module and the second transmitting antenna to stop working.
The improvement of the technical scheme is as follows: in step (5), the first threshold value D1 may be set to be in the range of 15-30 meters.
The improvement of the technical scheme is as follows: in steps (7) and (8), the second threshold value D2 may be set to be in the range of 5-15 meters.
The invention adopts the technical scheme that the method has the beneficial effects that:
(1) the microwave detector for the energy-saving lamp and the control method thereof adopt a low-frequency microwave signal for detection when the MCU module controls the dual-frequency transmitting module to not detect pedestrians and objects, have large detection range and low energy consumption, and the frequency of the microwave signal is 1.2-1.8GHz, which avoids the commonly used 2.4GHz and is not easy to be interfered, when an object to be detected enters the range of the first threshold value and has the action characteristics of a human body, the MCU module controls the dual-frequency transmitting module to perform dual-frequency detection by adopting microwave signals with two frequencies, namely a low frequency and a high frequency, wherein the frequency of the high-frequency microwave signal is 6.8-7.8GHz, the current commonly used 5.8GHz is avoided, and the high-frequency microwave signal is not easily interfered, and the MCU module immediately sends control information to control the energy-saving lamp to be turned on as long as an echo signal generated by the microwave signal with one frequency detects that a pedestrian enters the range of the second threshold value; microwave signals with two frequencies are redundant mutually, double detection can greatly improve the detection precision of a microwave detector and effectively reduce response time, and an energy-saving lamp can be ensured to be turned on in time;
(2) in the microwave detector for the energy-saving lamp, the photoresistor control circuit can adjust the power supply voltage at two ends of the equivalent resistor R3 of the microwave detector for the energy-saving lamp according to the illumination degree, the smaller the light is, the larger the resistance value of the photoresistor RG is, the larger the obtained voltage is, the larger the power supply voltage at two ends of the equivalent resistor R3 is, and therefore the brightness of the energy-saving lamp is improved; the voltage of the reverse input end of the operational amplifier A can be adjusted by moving the sliding end of the sliding rheostat R so as to adjust the conduction time of the operational amplifier A, and therefore the adjustment of the control sensitivity of the photoresistor control circuit is achieved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a microwave detector for an energy saving lamp according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an equivalent circuit principle of a photoresistor control module of a microwave detector for an energy-saving lamp according to an embodiment of the invention.
Detailed Description
Examples
The microwave detector for the energy saving lamp of the present embodiment, as shown in fig. 1, includes a photosensitive power supply module, an MCU module, a dual-frequency transmitting module, a receiving antenna, and a signal processing module;
the photosensitive power supply module is electrically connected with the MCU module and used for supplying power to the microwave detector for the energy-saving lamp after the light ray is lower than an illumination intensity threshold value P, wherein the illumination intensity threshold value P is 15 lx;
the dual-frequency transmitting module is respectively electrically connected with the MCU module and the signal processing module and is used for transmitting microwave signals after receiving control signals of the MCU module;
the receiving antenna is electrically connected with the signal processing module and is used for receiving the echo signal reflected by the object;
the signal processing module is respectively electrically connected with the MCU module and the dual-frequency transmitting module and is used for receiving the microwave signal and the echo signal and obtaining a difference signal based on the microwave signal and the echo signal reflected by the object;
the MCU module is used for controlling the dual-frequency transmitting module to transmit microwave signals, receiving the difference signals fed back by the signal processing module and judging the position characteristics and the action characteristics of the object to be measured based on Doppler effect.
In the microwave detector for the energy-saving lamp of the embodiment, the signal processing module comprises a mixing detection unit, a signal amplification module and a signal conversion module which are electrically connected in sequence;
the frequency mixing detection unit is used for obtaining a Doppler intermediate frequency signal based on the microwave signal and the echo signal reflected by the object;
the signal amplification module is used for amplifying the Doppler intermediate frequency signal;
the signal conversion module converts the Doppler intermediate frequency signal into a difference signal corresponding to the action characteristic and the position characteristic.
In the microwave detector for the energy saving lamp of the present embodiment, as shown in fig. 2, the photosensitive power supply module includes a dc power supply module and a photosensitive resistor control module;
the direct current power supply module is used for supplying power to the microwave detector for the energy-saving lamp through a circuit;
the photoresistor control module is used for controlling the circuit to be conducted after the light is lower than the illumination intensity threshold value P.
The photoresistance control module is a photoresistance control circuit, the photoresistance control circuit comprises a photoresistance RG, a resistor R1, a sliding rheostat R, an operational amplifier A and a resistor R2, the resistor R1 and the photoresistance RG are connected between the positive pole and the negative pole of the direct-current power supply module in series, the positive input end of the operational amplifier A is electrically connected with the circuit between the photoresistance RG and the resistor R1, the reverse input end of the operational amplifier A is electrically connected with the sliding end of the sliding rheostat R, two ends of the sliding rheostat R are respectively electrically connected with the positive pole and the negative pole of the direct-current power supply module, the output end of the operational amplifier A is electrically connected with one end of the resistor R2, one end of an equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the other end of the resistor R2, and the other end of the equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the negative pole of the direct-current power supply module. Wherein the equivalent resistance R3 is defined as: the energy-saving lamp of the embodiment has a resistance value when the microwave detector operates.
In the microwave detector for an energy saving lamp of this embodiment, the dual-frequency transmission module includes a first transmission module and a second transmission module, as shown in fig. 1, the first transmission module includes a first oscillation module and a first transmission antenna electrically connected to each other, and the second transmission module includes a second oscillation module and a second transmission antenna electrically connected to each other;
the first oscillation module and the second oscillation module are used for generating an excitation signal after receiving a control signal of the MCU module;
the first transmitting antenna and the second transmitting antenna are used for transmitting microwave signals to the surroundings.
The first oscillation module and the second oscillation module are both oscillation transistors. The first transmitting antenna, the second transmitting antenna and the receiving antenna are all microstrip patch antennas.
The invention discloses a control method of a microwave detector for an energy-saving lamp, which comprises the following steps:
(1) when the light is higher than the illumination intensity threshold value P (namely in daytime), the photosensitive power supply module does not supply power, and the microwave detector for the energy-saving lamp does not work;
(2) when the light is lower than the illumination intensity threshold value P (namely at night), the photosensitive power supply module starts to supply power, and the microwave detector for the energy-saving lamp starts to work;
(3) the MCU module controls the first oscillation module to generate an excitation signal and transmits a microwave signal to the periphery through the first transmitting antenna, wherein the frequency of the microwave signal is 1.5 GHz;
(4) the receiving antenna receives echo signals reflected by an object, the mixing detection unit obtains Doppler intermediate frequency signals based on the microwave signals and the echo signals reflected by the object, the signal amplification module amplifies the Doppler intermediate frequency signals, and the signal conversion module converts the Doppler intermediate frequency signals into difference signals corresponding to action characteristics and position characteristics;
(5) the MCU module judges the action characteristics and the position characteristics of the object to be measured through the difference signals, and when the position characteristics of the object to be measured enter the range of a first threshold value D1 and have the action characteristics of a human body, the MCU module controls the second oscillation module to generate an excitation signal and transmits microwave signals to the periphery through the second transmitting antenna, wherein the frequency of the microwave signals is 7.8 GHz; wherein the first threshold value D1 is 20 meters;
(6) the receiving antenna simultaneously receives echo signals of two frequencies reflected by an object, and the frequency mixing detection unit obtains two Doppler intermediate frequency signals based on the microwave signals of the two frequencies and the echo signals of the two frequencies reflected by the object;
(7) the MCU module respectively judges the action characteristics and the position characteristics of the object to be detected through the two difference signals, and sends control information to control the energy-saving lamp to be turned on as long as the action characteristics and the position characteristics obtained by one difference signal show that the position characteristics of the object to be detected enter the range of a second threshold D2 and have the action characteristics of a human body; wherein the second threshold D2 is 10 meters;
(8) when the energy-saving lamp is turned on, the MCU module continues to respectively judge the action characteristic and the position characteristic of the measured object through the two difference signals, and as long as the action characteristic and the position characteristic obtained by one difference signal show that the position characteristic of the measured object exceeds the 10-meter range of the second threshold D2, the MCU module sends out control information to control the energy-saving lamp to be turned off after 15 seconds; and as long as the position characteristics of the measured object obtained by a difference signal show that the measured object exceeds the first threshold D1 within the range of 20 meters, the MCU module controls the second oscillation module and the second transmitting antenna to stop working.
The microwave detector for the energy-saving lamp of the embodiment has the following specific principles: when the illumination is strong in the daytime, the resistance value of the photosensitive resistor RG is small, and the divided voltage is small, so that the voltage of the forward input end of the operational amplifier A is lower than that of the reverse input end thereof, the operational amplifier A is cut off, the photosensitive power supply module does not supply power, and the microwave detector for the energy-saving lamp does not work; when light is dark at night, the resistance value of the photosensitive resistor RG is increased, the divided voltage is increased, when the voltage of the forward input end of the operational amplifier A is higher than that of the reverse input end of the operational amplifier A, the operational amplifier A is conducted, the photosensitive power supply module starts to supply power, and the microwave detector for the energy-saving lamp starts to work; when the double-frequency transmitting module is controlled by the MCU module to detect pedestrians and objects, a low-frequency microwave signal is adopted, the detection range is large, the energy consumption is low, the frequency of the microwave signal is 1.2-1.8GHz, the current commonly used 2.4GHz is avoided, the interference is not easily caused, when the object to be detected enters the range of 20 meters and has the action characteristics of a human body, the double-frequency transmitting module is controlled by the MCU module to detect double frequencies by adopting two low-frequency and high-frequency microwave signals, the frequency of the high-frequency microwave signal is 6.8-7.8GHz, the current commonly used 5.8GHz is avoided, the interference is not easily caused, and as long as an echo signal generated by one of the high-frequency microwave signals detects that the pedestrians enter the range of 10 meters, the MCU module immediately sends control information to control the energy-saving lamp to be turned on; the microwave signals of the two frequencies are mutually redundant, the detection precision of the microwave detector can be greatly improved through dual detection, the response time is effectively shortened, and the energy-saving lamp can be ensured to be timely lightened.
In the practical application process of the microwave detector for the energy-saving lamp, the energy-saving lamp is required to have high sensitivity to light, and when the lamp is lighted early at night, the photoresistor RG with corresponding specification can be replaced, so that the light intensity lower than the light intensity threshold value P is 30 lx; when the energy-saving lamp is required to be low in light sensitivity, the photoresistor RG with the corresponding specification can be replaced when the lamp is turned on late at night, and the light intensity lower than the light intensity threshold value P is 2 lx. In the practical application process, the first threshold D1 and the second threshold D2 can be adjusted according to the application scene such as the interior of an energy-saving lamp or the exterior of a house, and when the energy-saving lamp is used indoors, the first threshold D1 and the second threshold D2 are smaller, and when the energy-saving lamp is used outdoors, the first threshold D1 and the second threshold D2 are larger.
The present invention is not limited to the above-described embodiments. All technical solutions formed by adopting equivalent substitutions fall into the protection scope claimed by the invention.
Claims (9)
1. A microwave detector for an energy-saving lamp is characterized in that: the device comprises a photosensitive power supply module, an MCU module, a dual-frequency transmitting module, a receiving antenna and a signal processing module;
the photosensitive power supply module is electrically connected with the MCU module and is used for supplying power to the microwave detector for the energy-saving lamp after the light ray is lower than an illumination intensity threshold value P, wherein the illumination intensity threshold value P is 2-30 lx;
the dual-frequency transmitting module is respectively electrically connected with the MCU module and the signal processing module and is used for transmitting microwave signals after receiving control signals of the MCU module;
the receiving antenna is electrically connected with the signal processing module and is used for receiving echo signals reflected by the object;
the signal processing module is respectively electrically connected with the MCU module and the dual-frequency transmitting module and is used for receiving the microwave signal and the echo signal and obtaining a difference signal based on the microwave signal and the echo signal;
the MCU module is used for controlling the dual-frequency transmitting module to transmit microwave signals, receiving the difference signals fed back by the signal processing module and judging the position characteristics and the action characteristics of the measured object based on the Doppler effect.
2. A microwave probe for an energy saving lamp as set forth in claim 1, wherein: the signal processing module comprises a frequency mixing detection unit, a signal amplification module and a signal conversion module which are electrically connected in sequence;
the frequency mixing detection unit is used for obtaining a Doppler intermediate frequency signal based on the microwave signal and the echo signal reflected by the object;
the signal amplification module is used for amplifying the Doppler intermediate frequency signal;
the signal conversion module converts the Doppler intermediate frequency signal into a difference signal corresponding to the action characteristic and the position characteristic.
3. A microwave probe for an energy saving lamp as set forth in claim 1, wherein: the photosensitive power supply module comprises a direct current power supply module and a photosensitive resistor control module;
the direct current power supply module is used for supplying power to the microwave detector for the energy-saving lamp through a circuit;
the photoresistor control module is used for controlling the circuit to be conducted after the light is lower than the illumination intensity threshold value P.
4. A microwave detector for an energy saving lamp as set forth in claim 3, wherein: the photoresistor control module is a photoresistor control circuit which comprises a photoresistor RG, a resistor R1, a slide rheostat R, an operational amplifier A and a resistor R2, the resistor R1 and the photoresistor RG are connected in series between the positive pole and the negative pole of the dc power supply module, the positive input terminal of the operational amplifier a is electrically connected to the circuit between the light dependent resistor RG and the resistor R1, the inverting input end of the operational amplifier A is electrically connected with the sliding end of the sliding rheostat R, two ends of the slide rheostat R are respectively electrically connected with the anode and the cathode of the direct current power supply module, the output end of the operational amplifier A is electrically connected with one end of a resistor R2, one end of an equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the other end of a resistor R2, and the other end of the equivalent resistor R3 of the microwave detector for the energy-saving lamp is electrically connected with the cathode of the direct current power supply module.
5. A microwave probe for an energy saving lamp as set forth in claim 1, wherein: the dual-frequency transmitting module comprises a first transmitting module and a second transmitting module, the first transmitting module comprises a first oscillating module and a first transmitting antenna which are electrically connected with each other, and the second transmitting module comprises a second oscillating module and a second transmitting antenna which are electrically connected with each other;
the first oscillation module and the second oscillation module are used for generating excitation signals after receiving the control signals of the MCU module;
the first transmitting antenna and the second transmitting antenna are used for transmitting microwave signals to the surroundings.
6. A microwave probe for an energy saving lamp as set forth in claim 5, wherein: the first oscillating module and the second oscillating module are both oscillating transistors; the first transmitting antenna, the second transmitting antenna and the receiving antenna are all microstrip patch antennas.
7. A control method of a microwave detector for an energy-saving lamp is characterized by comprising the following steps: the method comprises the following steps:
(1) when the light is higher than the illumination intensity threshold value P, the photosensitive power supply module does not supply power, and the microwave detector for the energy-saving lamp does not work;
(2) when the light is lower than the illumination intensity threshold value P, the photosensitive power supply module starts to supply power, and the microwave detector for the energy-saving lamp starts to work;
(3) the MCU module controls the first oscillation module to generate an excitation signal and transmits a microwave signal to the periphery through the first transmitting antenna, wherein the frequency of the microwave signal is 1.2-1.8 GHz;
(4) the receiving antenna receives echo signals reflected by an object, the mixing detection unit obtains Doppler intermediate frequency signals based on the microwave signals and the echo signals reflected by the object, the signal amplification module amplifies the Doppler intermediate frequency signals, and the signal conversion module converts the Doppler intermediate frequency signals into difference signals corresponding to action characteristics and position characteristics;
(5) the MCU module judges the action characteristics and the position characteristics of the object to be measured through the difference signals, and when the position characteristics of the object to be measured enter the range of a first threshold value D1 and have the action characteristics of a human body, the MCU module controls the second oscillation module to generate an excitation signal and transmits microwave signals to the periphery through the second transmitting antenna, wherein the frequency of the microwave signals is 6.8-7.8 GHz;
(6) the receiving antenna simultaneously receives echo signals of two frequencies reflected by an object, and the frequency mixing detection unit obtains two Doppler intermediate frequency signals based on the microwave signals of the two frequencies and the echo signals of the two frequencies reflected by the object;
(7) the MCU module respectively judges the action characteristics and the position characteristics of the object to be detected through the two difference signals, and sends control information to control the energy-saving lamp to be turned on as long as the action characteristics and the position characteristics obtained by one difference signal show that the position characteristics of the object to be detected enter the range of a second threshold D2 and have the action characteristics of a human body;
(8) when the energy-saving lamp is turned on, the MCU module continues to respectively judge the action characteristic and the position characteristic of the measured object through the two difference signals, and as long as one difference signal is obtained to obtain the position characteristic of the measured object and the position characteristic of the measured object is displayed to exceed the range of the second threshold D2, the MCU module sends out control information to control the energy-saving lamp to be turned off after 10-15 seconds; and as long as the position characteristics of the measured object obtained by a difference signal show that the measured object exceeds the range of the first threshold D1, the MCU module controls the second oscillation module and the second transmitting antenna to stop working.
8. The method for controlling a microwave probe for an energy saving lamp as set forth in claim 7, wherein: in step (5), the first threshold value D1 may be set to be in the range of 15-30 meters.
9. The method for controlling a microwave probe for an energy saving lamp as set forth in claim 7, wherein: in steps (7) and (8), the second threshold value D2 may be set to be in the range of 5-15 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962268.8A CN115032624B (en) | 2022-08-11 | 2022-08-11 | Microwave detector for energy-saving lamp and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962268.8A CN115032624B (en) | 2022-08-11 | 2022-08-11 | Microwave detector for energy-saving lamp and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115032624A true CN115032624A (en) | 2022-09-09 |
| CN115032624B CN115032624B (en) | 2022-12-06 |
Family
ID=83130264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210962268.8A Active CN115032624B (en) | 2022-08-11 | 2022-08-11 | Microwave detector for energy-saving lamp and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115032624B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014397A (en) * | 2010-09-08 | 2011-04-13 | 邵旭昂 | Radio frequency identification method and radio frequency identification system |
| CN104678828A (en) * | 2013-12-03 | 2015-06-03 | 南充鑫源通讯技术有限公司 | Microwave induction control method and microwave induction control device |
| CN204968170U (en) * | 2015-08-25 | 2016-01-13 | 深圳市毫欧电子有限公司 | Light -operated lamp based on photo resistance |
| CN207758657U (en) * | 2018-01-22 | 2018-08-24 | 长沙职业技术学院 | A kind of automobile lamp automatic controller |
| CN109151992A (en) * | 2018-06-29 | 2019-01-04 | 杭州涂鸦信息技术有限公司 | A kind of indoor locating system and method |
| CN110597080A (en) * | 2019-09-30 | 2019-12-20 | 深圳迈睿智能科技有限公司 | Activity sensing control device and activity sensing control method |
| CN110632564A (en) * | 2019-10-25 | 2019-12-31 | 深圳迈睿智能科技有限公司 | Environment self-adaptive microwave detector and self-adaptive method |
| CN111417242A (en) * | 2020-04-09 | 2020-07-14 | 西安石油大学 | Wireless sensing energy-saving lamp control system and control method |
| CN114137507A (en) * | 2021-11-19 | 2022-03-04 | 中国电子科技集团公司第十三研究所 | Microwave photon radar detection device and detection method thereof |
| CN114793379A (en) * | 2022-04-25 | 2022-07-26 | 宁波市盈芯微电子科技有限公司 | Lighting device of microwave radar response |
-
2022
- 2022-08-11 CN CN202210962268.8A patent/CN115032624B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014397A (en) * | 2010-09-08 | 2011-04-13 | 邵旭昂 | Radio frequency identification method and radio frequency identification system |
| CN104678828A (en) * | 2013-12-03 | 2015-06-03 | 南充鑫源通讯技术有限公司 | Microwave induction control method and microwave induction control device |
| CN204968170U (en) * | 2015-08-25 | 2016-01-13 | 深圳市毫欧电子有限公司 | Light -operated lamp based on photo resistance |
| CN207758657U (en) * | 2018-01-22 | 2018-08-24 | 长沙职业技术学院 | A kind of automobile lamp automatic controller |
| CN109151992A (en) * | 2018-06-29 | 2019-01-04 | 杭州涂鸦信息技术有限公司 | A kind of indoor locating system and method |
| CN110597080A (en) * | 2019-09-30 | 2019-12-20 | 深圳迈睿智能科技有限公司 | Activity sensing control device and activity sensing control method |
| CN110632564A (en) * | 2019-10-25 | 2019-12-31 | 深圳迈睿智能科技有限公司 | Environment self-adaptive microwave detector and self-adaptive method |
| CN111417242A (en) * | 2020-04-09 | 2020-07-14 | 西安石油大学 | Wireless sensing energy-saving lamp control system and control method |
| CN114137507A (en) * | 2021-11-19 | 2022-03-04 | 中国电子科技集团公司第十三研究所 | Microwave photon radar detection device and detection method thereof |
| CN114793379A (en) * | 2022-04-25 | 2022-07-26 | 宁波市盈芯微电子科技有限公司 | Lighting device of microwave radar response |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115032624B (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102307417B (en) | Target tracking subsection power supply street lamp system | |
| KR101864419B1 (en) | Intelligent street light control system and method thereof | |
| CN202013422U (en) | Microwave sensor | |
| US20150070205A1 (en) | Lighting Device with Microwave Detection Function | |
| CN201229402Y (en) | Microwave sensor | |
| CN114793379A (en) | Lighting device of microwave radar response | |
| CN115032624B (en) | Microwave detector for energy-saving lamp and control method thereof | |
| CN207424242U (en) | A kind of 24G Doppler radars applied to automatically-controlled door | |
| CN202710592U (en) | Infrared emitting-receiving circuit module for measuring vehicle velocity | |
| CN106707244A (en) | Regional microwave induction detection method and microwave inductor | |
| CN110769557A (en) | Lamp control device and system | |
| CN209787150U (en) | Microwave induction control device | |
| CN209198643U (en) | A kind of 5.8GHz single-transistor microwave motion sensor | |
| CN111479359A (en) | System and method for energy-saving dimming of street lamp network based on microwave or millimeter wave radar array detection method | |
| CN112285690B (en) | Millimeter radar wave distance measuring sensor | |
| CN109143176A (en) | A kind of 5.8GHz single-transistor microwave motion sensor | |
| CN220173453U (en) | Novel microwave induction module | |
| CN210514614U (en) | Motion detection system | |
| CN213457347U (en) | Miniaturized, ad hoc network Doppler radar sensor | |
| CN104515001B (en) | Integrate the illuminator of microwave detecting function | |
| CN210405261U (en) | Photoelectric correlation switch | |
| CN116500599A (en) | Human body perception detection system based on 24G millimeter wave radar | |
| CN201251625Y (en) | Microwave sensor | |
| CN207820288U (en) | A kind of novel intelligent street lamp control system with real-time road condition acquiring function | |
| CN203965617U (en) | The K wave band digital radar detector of a kind of induction fine motion target at a slow speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |