CN202177698U

CN202177698U - Moving object microwave detection sensing device

Info

Publication number: CN202177698U
Application number: CN2011202675713U
Authority: CN
Inventors: 张德军; 张德民
Original assignee: YINGKERUI ELECTRONIC TECH Co Ltd TIANJIN CITY
Current assignee: YINGKERUI ELECTRONIC TECH Co Ltd TIANJIN CITY
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2012-03-28
Anticipated expiration: 2021-07-27

Abstract

A moving object microwave detection sensing device comprises a radar probe module and a microwave signal amplification module, a single-chip microcomputer processing module and an output driving module which ate sequentially connected with the radar probe module. The single-chip microcomputer processing module is simultaneously connected with a parameter setting module, a power supply changeover module is simultaneously connected with the radar probe module, the microwave signal amplification module, the single-chip microcomputer processing module and the output driving module, and the power supply changeover module provides a direct current (DC) stabilized power supply of DC 3.3V for each part of the sensing device. The moving object microwave detection sensing device adopts a microwave theory to detect a moving object (passenger), can rapidly detect the moving object in a scope of a set distance (generally 4 meters) and a set angle (a level angle of 80 degrees and a vertical angle of 32 degrees) and identify the moving object at a speed between 5cm/ second and 100cm/ second by sending an electromagnetic wave of 2.4GHz. The moving object microwave detection sensing device adopts the low consumption design, microwave transmitting power is smaller than 15dBm, and total power consumption of the sensing device is smaller than 2 W.

Description

A kind of mobile object microwave sounding sensing device

Technical field

The utility model relates to a kind of mobile object microwave sounding sensor, particularly is applied to the detection of the mobile object (passenger) in the energy-conservation chamber system of staircase.

Background technology

In the existing staircase energy-conserving control technology, how accurately judgment object direction of motion, displacement are inscribed thereby definite movement locus of object is the ` that in staircase Energy Saving Control and the control of market automatically-controlled door, often runs into.Detecting the frequent technology that adopts of mobile object (mainly referring to the passenger) is: infrared sensor, ultrasonic sensor or mechanical switch, and these technology mainly include:

1, patent " induction type the energy saving escalator " (patent No.: ZL201020209963.X) disclose a kind of induction type energy saving escalator control method; This method " is provided with an infrared inductor in the porch of escalator, the control circuit control linkage of said infrared inductor and elevator ".Its deficiency is, infrared inductor can not be judged passenger's track route when detecting the passenger, does can only judge have the people within the specific limits? Thereby often send false judgment, cause staircase no-load running.

2, (patent No.: ZL201010132830.1) disclose a kind of staircase inlet human inductor method for designing, the major technique content is patent " a kind of staircase inlet human inductor ": " comprising power-supply circuit, ultrasonic transmitter-receiver and supporting driving circuit and feedback signal treatment circuit thereof in the structure of human body signal Acquisition Circuit ".Its deficiency is, ultrasonic sensor omission occurs when detecting the object of fast moving easily, cause the passenger to go on the staircase, but staircase is not received passenger's signal, thereby staircase continues to keep low speed or halted state, influenced the normal operation of staircase.

Summary of the invention

The utility model purpose is to solve existing staircase to detecting the inaccurate ` topic of distance, detection angles and translational speed in mobile object (passenger) detection, and a kind of mobile object microwave sounding sensing device is provided.

The mobile object microwave sounding sensing device that the utility model provides; Comprise that radar probe module, microwave signal amplification module, single chip processing module, output driver module and parameter are provided with module; Wherein, The radar probe module connects microwave signal amplification module, single chip processing module and output driver module successively, and single chip processing module connects parameter simultaneously module is set.

This device also comprises power transfer module; This power transfer module connects radar probe module, microwave signal amplification module, single chip processing module and output driver module simultaneously, and power transfer module is that the above-mentioned various piece of sensing device provides DC3.3V D.C. regulated power supply.

The principle of work of this sensing device

Radar probe module 1 is to the appointed area; Comprise: the electromagnetic wave of setpoint distance, set angle emission 2.4GHZ (transmission frequency can at 2.39GHZ between the 2.41GHZ); Receive the reflection wave that mobile object returns simultaneously, fast more when movement of objects speed, distance is when nearer; Reflection wave signal is strong more, exports microwave signal in view of the above and gives amplification module.The reflected signal of 2 pairs of mobile objects of microwave signal amplification module carries out detection and signal amplifies, and the square-wave signal after the amplification is transferred to single chip processing module; Does single chip processing module 3 judge according to the detection distance of setting whether the microwave signal that receives effective? If detecting distance with the interior movement of objects signal that receives, so, single-chip microcomputer can output signal to driver module; Output driver module 4 amplifies the back through transistor with the single-chip microcomputer signal and directly exports or drive relay, again through relay contact output.Parameter is provided with module 5 and is used for setting the detection distance.Power transfer module 6 provides DC3.3V D.C. regulated power supply for the various piece of sensing device.

Advantage of the utility model and good effect:

The sensing device that the utility model provides adopts microwave principle to detect mobile object (passenger); It is through sending the electromagnetic wave of 2.4GHZ; Can be at setpoint distance (common 4 meters), set angle (level angle 80 degree; Vertical angle 32 degree) express delivery detects mobile object in the scope, can recognition speed at 5 cels to the moving object between 100 cels.This sensing device adopts low power dissipation design, and the microwave emissive power is less than 15dBm, and the sensing device total power consumption is less than 2W.

The utility model has the advantages that:

(1) integrated level is high: this microwave sounding sensor integrates radar probe, amplifying circuit, single-chip microcomputer treatment circuit, output driving circuit and power-switching circuit, has solved in the past shortcomings such as like product complex structure, wiring are many.

(2) penetrability: the penetrable thickness of this microwave sounding sensor is less than 5 millimeters non-metallic objectsit is not a metal object, and staircase plastics skirtboard for example is applied in the staircase of nonmetal skirtboard, can directly hide in inside and install, and does not need perforate, and whole terraced outward appearance is had no effect.

(3) adaptability: this microwave sounding sensor only detects the passenger in the walking, can regulate sensing range according to the staircase installation situation, has good adaptive capacity to environment.

(4) reliability: the microwave sounding sensor detects through Radar Technology, does not receive illumination effect, not influenced by passenger's clothes color, thereby has guaranteed the reliability that detects greatly.

(5) compatibility: microwave detection system physical dimension is little, and is little to requirements of installation space, can adapt to installing and using of various staircases.

(6) professional: the microwave sounding sensor tip is to staircase Energy Saving Control specialized designs.Degree of protection is high, and dependable performance is installed simply.

Description of drawings

Fig. 1 is a mobile object microwave sounding sensing device structural representation;

Fig. 2 is a mobile object microwave sounding sensing device electrical schematic diagram;

Fig. 3 is a mobile object microwave sounding sensing device installation diagram.

Among the figure, 1 radar probe module, 2 microwave signal amplification modules, 3 single chip processing module, 4 output driver modules, 5 parameters are provided with module, 6 power transfer module, 7 handrails, 8 steps.

Embodiment

Embodiment 1:

As shown in Figure 1; The mobile object microwave sounding sensing device that the utility model provides; Comprise that radar probe module 1, microwave signal amplification module 2, single chip processing module 3, output driver module 4 and parameter are provided with module 5; Wherein, the radar probe module connects microwave signal amplification module, single chip processing module and output driver module successively, and single chip processing module connects parameter simultaneously module is set.

This device also comprises power transfer module 6; This power transfer module connects radar probe module, microwave signal amplification module, single chip processing module and output driver module simultaneously, and power transfer module is that the above-mentioned various piece of sensing device provides DC3.3V D.C. regulated power supply.

The function of radar probe module 1 is to the appointed area, comprising: the electromagnetic wave of setpoint distance, set angle emission 2.4GHZ receives the reflection wave that mobile object returns simultaneously; When movement of objects speed fast more; When distance was nearer, reflection wave signal was strong more, exported microwave signal in view of the above and gave amplification module.

The function of microwave signal amplification module 2 is that the reflected signal to mobile object carries out detection and signal amplifies, and the square-wave signal MW_AN after the amplification is transferred to single-chip microcomputer U2 (chip model: pin 19 STM32F101C8).

Is the function of single chip processing module 3 to judge according to the detection distance of setting whether the microwave signal that receives effective? If detecting distance, can there be mobile object to get into surveyed area through the indication of LED1 green indicating lamp with the interior movement of objects signal that receives.If movable signal continued more than 1 second, single-chip microcomputer can output signal to driver module, simultaneously through LED2 red led indication output signal.

The function of exporting driver module 4 is through transistor Q3 (element model: 9013) the single-chip microcomputer signal is amplified the back and directly export or drive relay K 1 (element model: RELAY-SPST), pass through the contact output of relay K 1 again.

Parameter is provided with module 5 and comprises coarse adjustment and inching switch.It is a four way switch that switch S 1 is set, and wherein DIP4 representes coarse adjustment, and OFF represents long-range detection, and distance is between 2 meters-4 meters; ON represents proximity detection, and distance is in 2 meters; DIP1,2,3 expression fine settings, numerical value is big more, and distance is far away more; Numerical value is more little, and distance is near more.

The function of power transfer module 6 is that the DC5V power source conversion that the outside is imported is become the DC3.3V power supply, offers radar probe module 1, microwave signal amplification module 2, single chip processing module 3, output driver module 4 and parameter module 5 uses are set.

The concrete catenation principle figure of this device is referring to Fig. 2.

Concrete applicating example

As shown in Figure 3, the application example of this sensing device in the staircase Energy Saving Control.A mobile object microwave sounding sensing device respectively is installed below the handrail 7 of the porch of staircase the right and left, about two sensing device introversion 30 degree, is faced upward simultaneously about 15 degree, constitute the search coverage of a sealing in the staircase porch.As passenger during, will trigger wherein one or two sensing devices near the staircase pedal.The output signal of sensing device sends in the control system of staircase, and the control system of staircase can start staircase, and the passenger is delivered to upstairs.

Claims

1. mobile object microwave sounding sensing device; It is characterized in that this device comprises that radar probe module, microwave signal amplification module, single chip processing module, output driver module and parameter are provided with module; The radar probe module connects microwave signal amplification module, single chip processing module and output driver module successively, and single chip processing module connects parameter simultaneously module is set.

2. device according to claim 1 is characterized in that this device also comprises power transfer module, and this power transfer module connects radar probe module, microwave signal amplification module, single chip processing module and output driver module simultaneously.