CN204775044U

CN204775044U - Integrated PM2. 5 air quality detects RFID license plate of sensor

Info

Publication number: CN204775044U
Application number: CN201520196897.XU
Authority: CN
Inventors: 杨天顺; 马晨阳
Original assignee: Shanghai Instrument And Electronics (group) Co Ltd
Current assignee: Shanghai Instrument And Electronics (group) Co Ltd
Priority date: 2015-04-02
Filing date: 2015-04-02
Publication date: 2015-11-18
Anticipated expiration: 2025-04-02

Abstract

The utility model relates to an integrated PM2.5 air quality detects RFID license plate of sensor. The problem that the car measuring in the car bicycle tail gas PM2.5 content and discharge was fixed a position and is tracked has mainly been solved to exceeding standard. This intelligence license plate contains the conventional electronic circuit part of license plate subtotal integration on the license plate, has contained PM2.5 sensor, RFID radio -frequency antenna, low -power consumption treater and energy paper. Intelligence license plate mountable is in car afterbody license plate position, acquires on the PM2.5 sensor PM2.5 concentration information among the automobile exhaust through the low -power consumption treater, through the RFID radio -frequency antenna with PM2.5 concentration information and license plate information transmission to the terminal that has RFID receipt ability (if charge). Thereby can be based on among the automobile exhaust that the stake of charging that has the networking ability go up to gather the information of PM2.5 concentration fixes a position and tracks the car that discharges that exceeds standard. Whole electronic circuit adopt the low -power consumption design, can adopt energy paper to supply power.

Description

A kind of RFID car plate of integrated PM2.5 Detection of Air Quality sensor

Technical field

The utility model provides a kind of RFID car plate of integrated PM2.5 Detection of Air Quality sensor, relates to Detection of Air Quality, RFID communication, belongs to electronic measuring technology field.

Background technology

Along with China's rapid development of economy, air quality problems becomes day by day serious.From last year, the Middle Easterns such as China North China, the Yellow River and Huai He River, Yangze river and Huai river, the south of the River continued to occur haze weather, caused people to pellet PM2.5 strong interest.But the domestic detection to PM2.5 concentration also rests on the more elementary stage.In the mode of concentration obtaining PM2.5 only by city in the fixed test point installed detect the concentration of local PM2.5.The Information issued of PM2.5 concentration is also only issue a unified PM2.5 concentration of city, information is relatively not accurate enough and have very large time delay.Detect city zones of different PM2.5 real-time concentration and by following the trail of source of pollution to the detection of PM2.5, and to implement rational governing measure to source of pollution be the inevitable approach improving air quality.After the odd-and-even license plate rule that the areas such as Beijing are implemented, the obvious improvement of air quality shows that the sucked particulate matter vehicle exhaust is one of major reason causing PM2.5 concentration over-standard.

Now can only by spot-check when the regular car test of automobile to the detection of vehicle exhaust, the pollutants mainly paid close attention in vehicle exhaust comprises the problem of CO, HC compound, the content in vehicle exhaust such as NOx, CO2, SO2.Do not list in index of correlation to the detection of PM2.5 concentration.And this method not only can not reflect the truth of automobile in running state, testing result error is very large.

Detecting sensor can be accomplished other thickness of grade by the cost of losing very little accuracy of detection by the automobile emission gas analyzer method based on qcm sensor and QCM signal processing chip that the utility model proposes, simultaneously by using the PM2.5 sensor assembly of QCM method and low-power consumption, the active RFID tag of small size is integrated in automotive license plate and goes.Can realize detecting in real time the PM2.5 content in the vehicle exhaust of each automobile, and by the receiving terminal with RFID information capacity gauge, the PM2.5 content information in the vehicle exhaust of each automobile and the situation of exceeding standard are gathered, realize positioning the automobile of discharge beyond standards and following the trail of.

Utility model content

The utility model carries out detecting mainly for PM2.5 content in vehicle exhaust and discharge beyond standards automobile carries out the problem of following the trail of, and proposes a kind of intelligent RFID car plate of integrated PM2.5 Detection of Air Quality sensor.Intelligent license-plate of vehicle can be arranged on automobile tail car plate position, the data of the PM2.5 granulin molecule of vehicle exhaust are detected in real time by the PM2.5 sensor assembly of employing QCM method design integrated in automotive license plate, obtain PM2.5 sensor by low power processor to get on the car the concentration data of PM2.5 granulin molecule in tail gas, by exceeding standard, number of times and the content that exceeds standard are kept in the memory device of self.At automobile through having the terminal of RFID receiving capability, by RFID radio-frequency antenna by the discharge beyond standards number of times of automobile with exceed standard and be sent to RFID receiving terminal containing numerical quantity.Realize positioning the automobile of discharge beyond standards and following the trail of to PM2.5 concentration information in vehicle exhaust by the networked capabilities of receiving terminal.

The purpose of this utility model is realized by following technical scheme:

1. one kind adopts QCM(QCM) the PM2.5 Sensor monitoring module 101 of method design.QCM method is a kind of very sensitive quality determining method, its survey precision can reach nanogram level, specific sensitivity is high 100 times at the micro-balance of the electronics of Gamma Magnitude, and the mass change that can measure in theory is equivalent to the part of unimolecular layer or atomic layer.QCM make use of the piezoelectric property of quartz-crystal resonator, and the change of quartz crystal oscillator electrode surface quality is converted into the change of frequency that quartz crystal oscillator circuit exports electric signal.This module comprises QCM electrode 102 part and sensor signal process chip 103.QCM electrode can produce different frequency fluctuations according to the concentration of PM2.5.Qcm sensor signal processing chip according to the frequency fluctuation of QCM electrode at the concentration information going out PM2.5 particle through demarcating post analysis, and can go in the low power processor MCU104 these data transmitted.QCM electrode 102 and qcm sensor signal processing chip 103 volume all can accomplish a millimeter rank, can be integrated into automotive license plate inside and become to be integrated with automotive license plate.

2. the low-power consumption MCU104 being integrated in the RFID radio-frequency antenna 105 on car plate and RFID signal can be processed.RFID radio-frequency antenna is high frequency antenna, is mainly integrated in car plate surface and communicates with RFID receptor 106.The low-power consumption MCU104 with RFID signal processing capacity can be integrated into automotive license plate inside.Low-power consumption MCU104 has the connecting interface of PM2.5 Sensor monitoring module 101, can communicate with PM2.5 Sensor monitoring module 101, preserves the data of license board information and PM2.5 concentration and the discharge capacity that exceeds standard.When automobile is through RFID receptor 106, above-mentioned information can be sent to RFID receptor 106 by the low-power consumption MCU104 with RFID signal processing capacity.

3. one kind is integrated in the papery battery 107 in automotive license plate.Thin paper battery is first succeeded in developing by German Fu Laoenhuofu electronics nanosystems research institute, and each deficiency in weight of this " thin paper " battery 1 gram, thickness, less than 1 millimeter, therefore can embed in the very little small container of the power consumptions such as greeting card in practical application and use.Except the huge advantage on volume, it is lower, not mercurous that this battery also has manufacturing cost compared with conventional batteries, the advantages such as environmentally safe.The voltage of this battery is 1.5 volts, obtains higher voltage by several serial battery.2 papery batteries are integrated in automotive license plate the voltage forming 3 volts in the utility model to export, for RFID radio frequency part, low-power consumption MCU104 and qcm sensor signal processing chip 103 are powered.According to battery time curve and system power dissipation, 2 papery batteries probably can support for 2 years.

accompanying drawing illustrates:

Fig. 1, functional block diagram

Fig. 2, diagram of circuit

detailed description of the invention:

The chip initial state of the intelligent RFID car plate of integrated PM2.5 Detection of Air Quality sensor is all in dormant state, needs to do disposable activation to Intelligent license-plate of vehicle.Intelligent license-plate of vehicle after activation can be arranged on rear row's car plate installation site of automobile.Intelligent license-plate of vehicle detects PM2.5 concentration in vehicle exhaust according to the message processing flow in Fig. 2.Simultaneously because Intelligent license-plate of vehicle adopts RFID radio-frequency technique, the receiving end (as charging pile) needing and have RFID reading capability with the use of, to PM2.5 concentration in automobile bicycle tail gas and can detect discharge beyond standards situation.

Detection Information treatment scheme in Intelligent license-plate of vehicle is:

1. the 102 pairs of vehicle exhausts of the QCM electrode in Intelligent license-plate of vehicle detect, and the variable concentrations of PM2.5 particle is converted to different frequency vibration signals.Reach the object that PM2.5 detects.

The vibration signal of QCM electrode 102 was converted to corresponding electric signal every several seconds by 2.QCM sensor signal process chip 103 after demarcating, and sent the data to low power processor MCU104.

3. low power processor MCU104 demarcates (slight pollution 100-150 to PM2.5 concentration according to standard according to QCM electrical signal data; Intermediate pollution 150-200; Serious pollution 200-300), then concentration value and license board information correspondence are preserved by low power processor MCU104.And the moment checks whether RFID antenna 105 detects RFID receptor 106 signal.

4., when automobile is through having the equipment of RFID receptor, concentration value and license board information are sent to RFID receptor 106 by RFID antenna 105 by low power processor MCU104.

5.RFID receptor has networked capabilities, license board information can be sent to high in the clouds control software design with the information of corresponding PM2.5 concentration value.

6. high in the clouds control software design can go out PM2.5 emission behaviour and the excess emitters situation of each automobile according to the information analysis obtained.

Claims

1. the RFID car plate of an integrated PM2.5 Detection of Air Quality sensor, comprise car plate part, RFID radio-frequency antenna and low power processor part, PM2.5 sensor module portion, paper battery part, it is characterized in that obtaining PM2.5 sensor assembly by low power processor gets on the car PM2.5 concentration in tail gas, is transferred to the terminal with RFID receiving capability by PM2.5 concentration by RFID radio-frequency antenna.

2. the RFID car plate of a kind of integrated PM2.5 Detection of Air Quality sensor as claimed in claim 1, it is characterized in that: adopt QCM(QCM) the PM2.5 Sensor monitoring module of method design, this module comprises QCM electrode part and sensor signal process chip.

3. the RFID car plate of a kind of integrated PM2.5 Detection of Air Quality sensor as claimed in claim 1, is characterized in that: comprise RFID radio-frequency antenna and the low power processor part that can process RFID signal; Adopt active RFID radio frequency design, and be integrated in automotive license plate by RFID radio-frequency antenna, the low power processor with process RFID signal can process RFID signal and data are sent to RFID receptor by antenna.

4. the RFID car plate of a kind of integrated PM2.5 Detection of Air Quality sensor as claimed in claim 1, it is characterized in that: adopt low power dissipation design, employing paper battery is powered, by RFID radio-frequency antenna, PM2.5 sensor assembly, the whole low power dissipation design of low power processor part, adopt paper battery to power to intelligent RFID car plate, do not need frequently to change battery and charge to battery.