KR20170054945A - Wiwerless power Radio wave Vehicle Dectector Unit - Google Patents

Abstract

The present invention relates to a wave detection-type vehicle detector capable of remotely checking whether a vehicle is parked or not by including a wave-receiving vehicle detector installed on the ground of a parking lot in a street or outdoor parking lot. A parking lot in a street or outdoor parking lot does not have a gate, so it is difficult for controlling a paid parking lot. The present invention is a new concept vehicle detector which can intelligently determine and detect a vehicle in a Micom by detecting a wave property change in a sensitivity (level) by a wave blocking effect in the event of parking while receiving a ultra-high frequency (UHF 2-76 Ghz) wave signal directly transmitted from a satellite via a vehicle detector by parking position. The ultra-small, passive, wireless-transmission vehicle detector can be simply and dependently installed on the ground of a parking lot and can remotely transmit parking position data to a remote central control center by parking lot areas in real time and transmit each serial number and parking detection data with an energy-saving wireless communication module including an internal battery without a signal communication wire and an external power. The passive vehicle detector can obtain an effect of increasing a filling rate of paid parking lot by providing detailed information on an empty parking lot by parking lot positions to the internet and a vehicle GPS of a smartphone application through an integrated parking lot control server by installing multiple vehicle detectors on each parking position, thereby solving the parking problem and preventing an illegal vehicle to settle the advanced parking culture.

Description

TECHNICAL FIELD [0001] The present invention relates to a vehicle wave detector,

It is a sensing terminal that detects parking vehicles on each parking lot in various parking lots in general parking lot, and transmits the parking status data. It can be used to search common car driver smartphone app or vehicle parking map on the navigation map quickly. An essential parking detection sensor is required. Conventional vehicle detectors such as ultrasonic sensors, photoelectric detectors, geomagnetic sensors, and roof loop coils have been used. The most widely used conventional loop coils are loop coils installed in a large area of 1 m x 2 m or more And 90% ~ 95% depending on the type of the vehicle, the detection error rate is as high as 2 ~ 10% depending on the type of vehicle and traffic method. There is a limitation in the use of the parking lot where the parking fee is calculated, and all of the installation requires external power, and excessive installation cost has been incurred.

The present invention is a no-feed method by a miniaturized internal battery (used for 3 years or more), and it does not require power supply and communication wiring, and it can detect a vehicle detection signal The wireless transmission module operates only when there is a change in the reception intensity of the radio waves, and the vehicle detection data installed in the surroundings of the vehicle detector is installed. This is a power saving type that is sent to the repeater. The recognition rate is 99.9% (Iot), which is a wireless-sensing vehicle detection unit, which is equipped with a new-concept satellite reception radio wave system and a microcomputer that detects and detects an intelligent vehicle detection unit is.

The loop coil method, which is the most widely used vehicle sensor in roads and parking lots, is buried in a road, which causes complexity due to construction and traffic congestion due to construction on highway general roads. Also, In particular, when entering and exiting from the parking lot entrance / exit, two curtains were detected at the same time on the loop coil, and two or three cars were detected as one.

In the past, ultrasonic, IR, photoelectric, and geomagnetic methods have been used to detect the detection rate of about 90 ~ 95% according to the surrounding environment and weather, and the error rate is more than 5% There were various problems in practical use due to detection error.

The loop coil is a metal body (vehicle) approaching to the detection coil. The inductance variation method is a constant electrical coil interlace. The intercept change according to the approach distance of the metal coil is fine (0.05%) when the vehicle is present and when there is no vehicle. When the loop coil size is 20Cm small, the inductance change detection is about 0.001%, and when the distance between the detector and the bottom of the vehicle is 20Cm or more, the proximity detection of the vehicle can not be detected and the detection error rate is high. . On the other hand, the ultrasonic sensor was installed in the outdoor roadside on the ultrasonic vibrator part, and errors were caused by the environment such as foreign objects, rain water, leaves, etc.,

Another geomagnetism sensor needs to keep the change rate of the geomagnetism constantly in the operation detection state and consumes a lot of power, and even when the vehicle is being detected, the geomagnetism sensor signal is interfered with the geomagnetism signal (5 ~ 10%) in a narrow parking lot with a narrow roadway. The present invention relates to a high-sensitivity radio wave sensing method using optical coherent propagation characteristics of ultra-high frequency (UHF) propagated in a space fired by a satellite in a new concept vehicle sensing system, It is a wireless all-weather vehicle detection unit that can be used for 3 or more years by intermittent sensing at intervals of ~ 3 minutes.

It is a small size within 20Cm and it should be installed on the ground without additional power and communication wiring. In order to simplify the installation operation, it can be used for a long time with batteries. The most important detection recognition rate should be more than 99.9% reliability, low productivity and economical efficiency, and the operating power of the wireless communication module integrated in the vehicle sensor should be a wireless transmission module including a specific frequency filter which does not interfere with other communication radio waves, Will be required.

 In order to solve the above problems, a new concept for detecting a vehicle uses a propagation characteristic of a frequency band using a radio wave blocking characteristic of a vehicle (metal body) among a myriad of radio waves in a ground space, (Light-mirror), the object which is smaller than the wave wavelength induces the waveguide (transmission) induction, and the propagation by the metal body By using the blocking characteristic and selecting the frequency with uniform radio wave intensity in the ground space, the sensor part is formed on the upper part of the vehicle sensor with the radio wave receiving antenna and the 90 ° upward direction to the ground, A small radio wave receiving antenna using the characteristic of the received radio wave sensitivity change rate is formed as a sensor part, It will be used as a type.

However, the use of radio wave receiver Detecting the use of various environments, changes in the reception sensitivity of the radio, some changes occur depending on the surrounding environment, installed radio receivers installed around the detector, It is a vehicle detector that solves the problem by classifying the resume as a noise propagation that increases the reliability in the microcomputer processor.

Conventional vehicle detectors have a high error rate of 5 ~ 10%, but this vehicle detection system is a new concept using unspecified radio waves uniformly propagating in the ground space in communication satellites. It improves reliability with an error rate of 0.05 ~ 0.1% Reduced productivity and ease of installation with power supply wireless system It will be an essential vehicle detector for calculating the parking expenses according to the parking time and especially for the parking in the off-street paid parking lot with no entrance and exit.

In addition, there is no detection error irrespective of vehicle type. U-CIYT business in Ubiquitous era and Object Internet In the age of the Internet, when the vehicle detection signal is linked with the Internet network, detailed parking situation in real- You will be able to use the parking lot for quick and affordable parking. ITC convergence Iot technology will see the effect of new construction of parking lot.

In addition, large-sized parking lots such as large and medium-sized hotel department store apartments in Korea, parking lot status and free parking space for each parking lot can be easily accessed from the parking lot entrance at a glance. Induction guide Essential core vehicle detection unit Will be.

Fig. 1 is a view showing a state in which the product of the present invention is installed on a road. Fig.
FIG. 2 is a block diagram of a reception-sensing directional antenna and a directivity characteristic
Fig. 3 shows the sensitivity reduction due to the peripheral radio wave shielding by the parking vehicle.
FIG. 4 is a block diagram of an overall appended vehicle detector of the present invention; and FIG.
5 is a graph showing the relationship between the reception level and the noise propagation diagram

Typical parking lots are classified into two types of parking lots. They are divided into a parking lot with an entrance, a road without an entrance, and an outdoor parking lot. A parking lot with a common entrance is efficiently managed and operated by various systems such as a car number recognition camera system , The parking lot can not be installed and there is no doorway such as the roadside, etc.

(Fig. 1-111) is installed on the parking lot floor as an example of the installation of the roadside parking lot shown in Fig. 1, so that the reception sensitivity of the radio waves transmitted from the satellites when there is no vehicle is more than 10% It will detect the radio reception level where the difference occurs. FIG. 3 is a diagram showing a vertical reception-oriented characteristic and an antenna for receiving a radio wave by installing the vehicle detection terminal on a parking space. FIG. Figure-5 shows the reception sensitivity level is 20dB to 30dB change graft when the reception radio waves are present when there is a parking vehicle and when there is no parking.

The operation procedure of the vehicle detection terminal according to the present invention will be described in detail with reference to FIG. 4 appendix diagram.

Parking lot is satellite broadcasting radio wave from satellite from 35,900km above street level, and ultra-microwave is propagated to the ground by direct optical cooperation like sun light. Our Mugunghwa No. 3 is transmitted at a frequency of 12.35Ghz at 116degrees. The Satellite Bradcating broadcasting communication satellites and C-Band can be used with 4 ~ 5Ghz and 1.5 ~ 1.6Ghz radio waves.

Over 10 Ghz cloud over frequency due to radio waves. It is possible to use limitedly for use in this radio wave receiver because there is a lot of air intensity divergence loss such as fog etc. and it is good in stiffness, We use L-Band 1.5 ~ 1.6 Ghz radio.

The low-noise amplifier (LNB in Fig. 4-231) amplifies the radio signal received from the specific frequency resonant antenna in the radio-receiving antenna (Fig. 4-230) in Fig. The receiving radio wave level differs according to the time zone, so that the vehicle sensor data repeater detects the satellite radio wave receiving reference radio wave level in real time with a separate GPS receiving module and transmits the vehicle sensor transmitting / receiving communication module (FIG. 4- 290) (Fig. 4-274) is applied to the LAN-1 first-stage amplifier and LAN-2 to control the gain to control the gain of the amplifier through the microcomputer 260 in the detector, The gain adjustment according to the reference signal strength according to the change automatically reduces the deviation to stable reception and vehicle detection. The received radio frequency is mixed with the local first local oscillation frequency in a first order and second order superheldodyne manner to obtain a low intermediate frequency at M-1 (FIG. 4-241) and M-2 (FIG. 4-243) The amplified signal is amplified by an intermediate amplifier (FIG. 4-232), then the ceramic filter noise is removed at a specific low frequency and amplified by a second intermediate frequency amplifier (AMP-2, 233) Detector (Figure 4-235) is detected and amplified. The weak signal voltage is set by the microcomputer (Fig. 4-260), and it sets the gain of automatic gain adjustment (Fig. 4-274) to DC voltage so that the proper signal level pattern and gain can be adjusted. The detected parking signal is stored in the microcomputer memory. After the radio receiver module is operated for about 1 second, the power line (272) is kept in a power saving mode because the power is turned off in the sleep mode for saving power.

Radio wave receiver module power supply is checked whether there is a parking vehicle or not in the parking lot on the roadside at one second, and the power is applied periodically according to the set time (1 minute to 3 minutes) (Power saving purpose function) The radio reception detection time is about 200msec, and the standby mode is the standby mode. It is a power saving type that is used for more than 3 years by extending the usage time of battery 1: 900 by 3 minutes (180sec = 180,000msec) with 200msec: 180,000msec as 1: 900 and becomes the unpaid wireless communication parking sensor.

When a new parking detection signal changed by the vehicle is generated, the wireless module for sensing data transmission (FIG. 4-270) is stored in the microcomputer, and the power line 273 is applied in a reception waiting state, If a repeater inquires sequential inquiries, it waits for a query signal, and then repeats the inquiry sequentially. The parking sensor data repeater installed in the vicinity of each vehicle sensor or the street lamp is charged into the internal battery by the solar battery, and the individual unique number address is always scanned from 32 to 128 vehicle sensors of the present invention at all times, Will be repeated. At this time, only when the vehicle sensor receives the reception signal (question signal) from the relay device, the vehicle status is stored in the vehicle sensing terminal (parking status response), and after the first and second reconfirmation communication, The module (Figure 4-270) is automatically powered off in the sleep mode (sleep state) again from the microcomputer (Figure 4-260). The vehicle detectors provided for each surrounding parking position are each assigned an ADRESS (unique number code), and the data received in the repeater (FIG. 4- 251) is stored in a specific platform as a unique number for each vehicle detection GPS module received data parking position ) And communicates again with the Internet router (FIG. 4-257) for transmission to the wireless Internet (FIG. 4-258) network.

As an example, the radio receiver module operates once every 3 minutes. However, when there is no change in the parking lot for one month, there is no power consumption in the vehicle sensor because there is no power for sending / receiving communication module.

As shown in FIG. 5, a radio wave received on the ground is generated at a level difference of 10% or more when there is a parked vehicle and when there is no parked vehicle, so that the microcomputer recognizes whether there is an external radio noise, The program will detect it. At this time, the reception sensitivity difference between -20dB and -40dB is generated by the whole area, and it is set by the microcomputer and the automatic gain adjustment is set to 2,000msec slowly. However, It recognizes the level of the parking vehicle which is suddenly changed (the time when the vehicle leaves and leaves) within 100msec.

Also, in case of installing in the area where the vehicle sensor is installed, or in a shaded area in the building, the satellite radio wave as shown in Fig. 5 is blocked, and when there is no received radio wave, the satellite radio wave is virtual in the repeater, Signal. This is to increase the detection reliability by preventing the modulated signal from interfering with other noise propagation signals or other radio communication signals.

A1-A2 (Fig. 5-301, 303. 305) in Fig. 5 is the signal level when there is no parking vehicle and B2 is the external noise propagation signal. When the parked vehicle is parked on the receiving antenna of the vehicle sensor, the received radio wave sensitivity is attenuated by about 10% or more (Figs. 5-307, 401) to detect the parking state and memorize the parking state (Fig. 5-401) output signal.

In order to maintain the directivity characteristics of the satellite and the 90-degree vertical reception radio waves, the frequency of use is calculated to be 30,000 Km / 1.5 GHz at the frequency of use, and the wave length is 20 cm to 1/4 wavelength, (Fig. 1-115) of the vehicle detector main body upper waveguide antenna (Fig. 1-114) to the waveguide guiding antenna (Fig. 3-603) to 1/8 wavelength (2.5 cm) (Figure 3-601) to form a shield to block the directivity and surrounding noise propagation. Orientation characteristics are shown in Fig. 3, which is a 25 degree bandwidth propagation direction characteristic at 90 degrees vertical from the ground of the vehicle sensor installation.

Data collected by this wireless repeater has a relay wireless communication module and a wired / wireless communication LAN (LAN) for interworking with the Internet (Iot), and it is possible to easily find an empty parking space by location in the real- The network will be configured to use the parking lot. In conjunction with the smartphone application for mobile communication, which is popular all over the world, the driver will use the parking guide and the parking fee calculation in conjunction with the smartphone. The road surface vehicle detector is fixed on the parking surface. It forms an external charge terminal considering the case that the internal battery is completely discharged after a certain period of time. In order to detect the state of the power source, a high resistance is installed in parallel with the reverse current prevention diode It is a practical non-dispatch radio dispatch vehicle detector configured to check the power status from time to time even outside.

101; Parking vehicle 102; Empty parking space and vehicle detector 103; Parking vehicle
104; The wireless vehicle detector 105 of the present invention; Street light. Jeonju 110; Parking vehicle
111; The present invention includes a no-feed wireless vehicle detector 112; Radio reception antenna
113; A sending and receiving data communication antenna 114; Sensor main PCB board
115; Vehicle detector case 116; Parking floor 210; Parking vehicle 220; A sending and receiving data communication antenna (447 MHz) 230; A satellite radio reception antenna (4 GHz) 231; A low-noise high-frequency amplifier (Low Nosic Amplifier) 232; A low-noise high-frequency amplifier (Low Nosic Amplifier) 234, a low-noise high-frequency amplifier (Low Nosic Amplifier) 235, a low-noise high-frequency amplifier (Low Nosic Amplifier) 236, Low Noise High Amplifier (Low Nosic Amplifier)
241; RF / Mix-1 242; Tuning Filter-1 243; RF / Mix-1 244; Tuning Filter-2
245; Ceramic Filter-1 246; Singal-Detecter
247; R / T-Swich 248; Local-Osilater-2 249; OSC-Buffer 250; Local-Osilater-1
251; A parking data transmission / reception repeater antenna 252; RF module repeater
A radio reception sensing antenna 254; GPS receiving antenna 255; Shadow Area Replacement Microwave Antenna 256; Internet Relay Wifi ANT 257; An Internet router 258; Broadband Wireless Internet Net-Working 259 MCU / Memory
260; Vehicle detector control microcomputer 270; Vehicle detection data transmission RF module
271; Harmonic high frequency heater 272; Power supply line for receiving detection base
A reception radio wave level when no vehicle is present; a reception radio wave level when no vehicle is present; a reception radio wave level when no vehicle is present; 307; 308: Receive radio wave level when there is no vehicle
309; A received radio wave level 401 when the vehicle is absent; a weak signal 402 in which the radio wave is shielded by the vehicle in proximity to the reception sensing antenna; A reception signal level 403 changed when a vehicle comes in with a normal reception signal; Receive radio wave level when there is no vehicle
501; Top satellite surrounding radio wave 502; Satellite propagation around the top of the vehicle
503; Top satellite nearby satellite radio waves 504;
505 Around the top of the vehicle satellite radio wave 506; Top of the vehicle Satellite virtual radio imagery
507; Satellite upper-satellite transmission 508; Receiving radio wave antenna part
601; Microwave antenna 602;

Claims (7)

 Vehicle Detector Installed Vehicle Detector Vehicle Detector (FIG. 1-111) Incorporating High Frequency Receiving Module for Receiving Extreme Microwave Frequency Satellite Propagation (FIG. 3-501, 502, 503, 504) When the vehicle (metal objects 1-101 and 103) is close to the upper portion, the received radio wave level reception change is detected by the radio wave shielding effect (FIG. 4-246) and the change pattern in which the reception sensitivity is rapidly changed, And a radio wave receiving system vehicle detector  In case of using the radio wave receiving method vehicle detector in a parking lot in a building, a weak radio wave transmitter for receiving a vehicle sensor (FIG. 4-255) is received by a separate vehicle detection repeater in a shaded area where received radio waves are weak due to satellite radio interference and building shielding A radio wave receiving system for detecting and discriminating a radio wave signal attenuation amount in a high frequency receiving module by configuring the radio wave modulated for detection to propagate to a plurality of surrounding vehicle sensors A waveguide antenna for directing receiving antenna characteristics (FIG. 2-200) perpendicular to the ground plane to shield the radio wave reflected by an object other than the vehicle sensor vehicle when the detector unit is installed on the ground in the radio wave receiving vehicle detector of claim 2. (Fig. 2-602, 603) and an integrated type (Fig. 2-601) on the upper part of the sensor body. The method of claim 3, wherein, in the step of discriminating and detecting the noise environment propagation and the non-reflected unbalanced radio wave reception environment change in the vehicle sensor as a signal level detection algorithm signal rapidly changing in a predetermined pattern in the microcomputer (FIG. 4-260) And an antenna resonance heater (FIG. 4-245) for detecting a specific satellite reception frequency with a 90-degree direction vertical directional antenna (FIG. 2-602) (4-290) so that the received radio signal is stabilized without being saturated due to a change in the distance and a change in the intensity of the radio wave due to the revolution of the vehicle sensor of claim 1 in the field installation area and the satellite, (Figure 4-254), and the data relay device (Figure 4-290) transmits the reference level control signal to each vehicle sensor (Figure 4-252) to the vehicle sensor (4-231, 232) for controlling the gain of a high-frequency receiving amplifier in a micom (Fig. 4-260) in a vehicle sensor so as to automatically correct the gain adjustment of the propagation signal amplifier. 4-254 by encrypting the personal identification data XYZ data, the parking lot identification number, and the detection status data received from the vehicle sensor radio wave receiving module (FIG. 4-254) of claim 1, And a microcomputer (FIG. 4-260) for transmitting the signal to the wireless Internet relay (FIG. 4-257) Operation of the radio wave receiving module for detecting the vehicle Operation of the power saving module for instantaneous operation for 0.1 second is performed to discriminate the parked vehicle and to be controlled by the microcomputer (FIG. 4-238) to switch the power saving mode (Fig. 4-272) and communicates with the data repeater only after the status change has occurred, the power is switched from the microcomputer (MCU 4-260) to the sleep power saving mode (Fig. 4- 272) , And an antenna for a wireless communication module (Fig. 1-112) is configured as a dual integral type with a radio reception sensing antenna on the upper part of the detector main body.

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