SUMMERY OF THE UTILITY MODEL
According to the purpose of the utility model, the intelligent street lamp comprises a lamp post, a bulb and a power module, and the street lamp also comprises a light brightness regulation and control system; the lamplight brightness regulation and control system comprises a light sensor, a pyroelectric infrared sensor, an ultrasonic range finder, a radar speed meter, an STM32 main controller and a PWM control module.
The illumination sensor is used for gathering illumination intensity to in transmitting the illumination intensity information of gathering to STM32 main control unit, compare with the illumination intensity value of predetermineeing in the STM32 main control unit, judge whether need open the street lamp, generate control command and transmit to PWM control module, open or close the street lamp, and make the street lamp throw light on with initial luminance.
The pyroelectric infrared sensor is used for identifying infrared wavelength information sent by a target object and transmitting an identification result to the STM32 main controller.
The ultrasonic distance measuring instrument is used for measuring the distance between a target object and the street lamp and transmitting the measured distance data to the STM32 main controller.
The radar speed measuring instrument is used for measuring the traveling speed of a target object and transmitting measured speed data to the STM32 main controller.
STM32 main control unit is used for receiving infrared wavelength information, distance information and the speed information that pyroelectric infrared sensor, ultrasonic ranging appearance and radar velocimeter transmitted to compare its corresponding threshold value with predetermineeing in the STM32 main control unit, when all information all satisfied and predetermine the requirement, send control command to PWM control module and turn up light luminance, otherwise keep initial light luminance unchangeable.
And the PWM control module is used for receiving a control instruction sent by the STM32 main controller and controlling the opening and closing of the street lamp and the brightness adjustment of the lamp light.
Preferably, the initial brightness of the street lamp is one third of the normal brightness, and when the light brightness regulating and controlling system detects that someone passes through the street lamp, the light brightness is increased to the normal brightness.
Preferably, the power module comprises a solar power supply module and a power grid power supply module, and the solar power supply module comprises a solar cell panel arranged at the top of the lamp post and a storage battery arranged in the lamp post.
Preferably, the street lamp further comprises a face recognition module, wherein the face recognition module comprises a camera arranged above the street lamp, a WIFI module integrated on the STM32 main controller and an upper computer; when light brightness control system judges that someone passes through the street lamp down, when adjusting light brightness, STM32 main control unit sends signal to the camera, gathers pedestrian's photo through the camera to pass through the WIFI module with the photo of gathering and transmit to the host computer.
Preferably, camera, illumination sensor, pyroelectric infrared sensor, ultrasonic ranging appearance and radar velocimeter all fixed mounting are on the lamp pole, and its outside cover is equipped with transparent safety cover.
Compared with the prior art, the utility model discloses an intelligence street lamp's advantage is:
(1) the utility model discloses a set up light brightness regulation and control system, the accurate control pedestrian of being convenient for, the light brightness of adjusting high when the pedestrian passes through, turn down light brightness when no pedestrian passes through, under the condition that does not influence the illumination, energy saving in the very big degree.
(2) The utility model discloses set up three kinds of monitoring facilities of pyroelectric infrared sensor, ultrasonic ranging appearance and radar tachymeter and monitor the pedestrian, it is more accurate to pedestrian's monitoring.
Detailed Description
The following description briefly describes embodiments of the present invention with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Fig. 1-2 show the preferred embodiment of the present invention, whose structure is analyzed in detail from different perspectives, respectively.
An intelligent street lamp as shown in fig. 1 comprises a lamp post 1, a bulb 2, a power supply module and a lamp brightness control system.
The lamp pole 1 stands on both sides of the road, and the bottom of the lamp pole is provided with a support bracket 3 to stabilize the balance of the top of the street lamp. The bulb 2 is an LED lamp and is arranged on the top of the lamp post 1.
The power supply module comprises a solar power supply module and a power grid power supply module 15. The solar power supply module comprises a solar panel 13 arranged on the top of the lamp post 1 and a storage battery 14 arranged in the lamp post 1. The solar cell panel 13 is arranged at the topmost end of the lamp post 1 and used for collecting solar energy and converting the solar energy into electric energy for the street lamp to use, the storage battery 14 is arranged below the solar cell panel and used for storing residual electric energy for use in cloudy days and rainy and snowy days, and the solar cell panel 13 is connected with the storage battery 14 through a wire. Meanwhile, the power grid is used for supplying power, and when the solar power supply is insufficient in continuous rainy days, the switching between the solar power supply module and the power grid power supply module 15 can be realized, so that the continuous illumination of the street lamp is realized. Specifically, a resistor with a very small resistance value is connected in series in a charge-discharge loop of the storage battery 14 group, and a voltage drop must be generated on the resistor; during charging, the voltage value is negative; during discharge, the voltage value is positive. The voltage value can be used as one path of input voltage of the rear-end operational amplifier LM321, and is connected to an A/D conversion pin of the STM32 main controller 9 after being processed by an arithmetic circuit, so that the analog voltage quantity is converted into a digital voltage quantity, and the digital voltage quantity represents the electric quantity of the storage battery 14 group. If the storage battery 14 is insufficient in electric quantity, an alarm signal is generated and transmitted to a P/I port of the STM32 main controller 9, at the moment, the STM32 main controller 9 sends a command to a single-pole double-throw switch on a peripheral circuit, and the switch originally on the storage battery 14 is switched to a power grid wire, so that power supply of a power grid is realized.
As shown in fig. 2, the light brightness control system includes an illumination sensor 4, a pyroelectric infrared sensor 5, an ultrasonic range finder 6, a radar velometer 7, an STM32 main controller 9, and a PWM control module 10.
Illumination sensor 4 is arranged in gathering illumination intensity to in transmitting the illumination intensity information of gathering to STM32 main control unit 9, compare with the illumination intensity value of predetermineeing in STM32 main control unit 9, judge whether need open the street lamp, generate control command and transmit to PWM control module 10, open or close the street lamp. Specifically, the illumination sensor 4 is a BH1750FVI type illumination sensor, is installed at the top of the street lamp without shielding, when the intensity of the illumination collected by the illumination sensor is greater than a preset value in an STM32 main controller 9, the STM32 main controller 9 judges that the illumination is in the daytime at the moment, the STM32 main controller 9 sends a control instruction to the PWM control module 10, and the PWM control module 10 drives the street lamp to be closed; when the illumination intensity that illumination sensor 4 gathered is less than default in STM32 main control unit 9, STM32 main control unit 9 judges this moment for night or cloudy day, and STM32 main control unit 9 sends control command to PWM control module 10, is driven the street lamp by PWM control module 10 and opens to make the street lamp throw light on with initial luminance, the one-third of street lamp normal brightness promptly.
The pyroelectric infrared sensor 5 is an HTZ-T207 type pyroelectric infrared sensor and is used for identifying infrared wavelength information sent by a target object 17 and transmitting an identification result to the STM32 main controller 9. The ultrasonic distance meter 6 is a TCT40-T/R type ultrasonic distance meter for measuring the distance between the target object 17 and the street lamp, and transmits the measured distance data to the STM32 main controller 9. The radar velocimeter 7 is an EG-R3 type radar velocimeter for measuring the travel speed of the target object 17 and transmitting the measured speed data to the STM32 main controller 9.
When the street lamp is the on state, target object 17 is close to the street lamp, pyroelectric infrared sensor 5, ultrasonic distance meter 6 and radar velocimeter 7 begin work simultaneously, a wavelength for discerning target object 17 and sending, distance between target object 17 and the street lamp and the speed of marcing of target object 17, and transmit testing result to STM32 main control unit 9, STM32 main control unit 9 receives pyroelectric infrared sensor 5, the infrared wavelength information that ultrasonic distance meter 6 and radar velocimeter 7 transmitted, behind distance information and the speed information, compare it with the corresponding threshold value of predetermineeing in STM32 main control unit 9, when all information all satisfied predetermineeing the requirement, send control command to PWM control module 10 and increase light luminance to normal luminance, otherwise light luminance is unchangeable. When target object 17 kept away from the street lamp, pyroelectric infrared sensor 5, ultrasonic ranging appearance 6 and radar speed meter 7 transmit testing result to STM32 main control unit 9, and when at least one of the information that detects does not satisfy preset the requirement, STM32 main control unit 9 sends control command to PWM control module 10, adjusts light luminance to initial luminance. Specifically, the initial brightness of the street lamp is one third of the normal brightness, when the light brightness control system detects that the target object 17 passes through the street lamp, the light brightness is increased to the normal brightness, and when the light brightness control system detects that the target object 17 is far away from the street lamp, the light brightness is decreased to the initial brightness, which is one third of the normal brightness.
When personnel detection is carried out by utilizing the pyroelectric infrared sensor 5, the influence of the ambient temperature is very easily received, and when the ambient temperature is basically consistent with the human body temperature, the information detected by the pyroelectric infrared sensor 5 is a passing state of people all the time, so that the street lamp is easy to keep normal brightness for working for a long time, and the great waste of resources is caused. Add ultrasonic ranging appearance 6 and radar speed indicator 7, all detect someone when passing through at three kinds of check out test set, the street lamp is bright to the adjustable, and the testing result is more accurate.
When the ultrasonic distance meter 6 is used for accurately measuring the distance between the target object 17 and the street lamp, the distance between the target object 17 and the street lamp is taken as a boundary line, and when the distance between the target object 17 and the street lamp is more than 50 meters, the brightness of the street lamp is kept at the initial brightness or is adjusted from the normal brightness to the initial brightness; when the distance between the target object 17 and the street lamp is less than 50 meters, the data fed back by the pyroelectric infrared sensor 5 and the radar velocimeter 7 is combined to judge whether the brightness of the street lamp is increased.
When the radar velocimeter 7 is used for accurately measuring the traveling speed of the target object 17, the measured speed is compared with the traveling speed of people after multiple measurements, and if the speed is 1m/s-2m/s (the normal walking speed of people is about 1.39m/s), or the speed is 3m/s-5m/s (the normal speed of a bicycle is 4.16m/s), or the speed is 8m/s-14m/s (the normal speed of a motor vehicle on a rural road is 11.11m/s), the data fed back by the pyroelectric infrared sensor 5 and the ultrasonic range finder 6 are combined to judge whether the street lamp brightness is increased, or the initial brightness illumination is kept.
The PWM control module 10 is used for receiving a control instruction sent by the STM32 main controller 9 and controlling the opening and closing of the street lamp and the brightness adjustment of the lamp light.
Further, this street lamp still includes face identification module, and face identification module is including installing camera 8, the WIFI module 11 and the host computer 12 of integration on STM32 main control unit 9 above the street lamp. When light brightness control system judges that someone passes through the street lamp down, when adjusting light brightness, STM32 main control unit 9 send signal to camera 8, gather the picture that gets into the target object 17 of the 50 meters within ranges in the field of vision through camera 8, and pass through AD conversion module with the picture of gathering and save STM32 main control unit 9 in, rethread WIFI module 11 with data transmission to host computer 12, compare with the picture in the database, if this person is fleeing for crime or at present, will produce the warning, carry out this person and arrest the action.
Further, camera 8, light sensor 4, pyroelectric infrared sensor 5, ultrasonic ranging appearance 6 and radar velocimeter 7 all fixed mounting are on lamp pole 1, and its outside cover is equipped with transparent safety cover 16. STM32 main control unit 9 is installed and in lamp pole 1, is connected through wire and camera 8, light sensor 4, pyroelectric infrared sensor 5, ultrasonic ranging appearance 6 and radar tachymeter 7.
To sum up, the utility model discloses an intelligence street lamp through setting up light brightness regulation and control system, is convenient for accurately monitor the pedestrian, increases light brightness when the pedestrian passes through, reduces light brightness when no pedestrian passes through, under the condition that does not influence the illumination, energy saving in the very big degree. This street lamp sets up three kinds of monitoring facilities of pyroelectric infrared sensor, ultrasonic ranging appearance and radar velocimeter simultaneously and monitors the pedestrian, and is more accurate to pedestrian's monitoring.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.