CN204514381U - A kind of novel sensor being applicable to Internet of Things - Google Patents
A kind of novel sensor being applicable to Internet of Things Download PDFInfo
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- CN204514381U CN204514381U CN201520224236.3U CN201520224236U CN204514381U CN 204514381 U CN204514381 U CN 204514381U CN 201520224236 U CN201520224236 U CN 201520224236U CN 204514381 U CN204514381 U CN 204514381U
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Abstract
A kind of novel sensor being applicable to Internet of Things belongs to Internet of Things application.This sensor is used for measuring the real-time and precise of ambient temperature and humidity, ensures in rugged surroundings, without the need to the humiture environmental information residing for the manual operation Real-time Obtaining detection of a target simultaneously.The power output end of the utility model rf analog front-end module is connected with the power input of Temperature Humidity Sensor, the power output end of rf analog front-end module is connected with the power input of digitial controller module, the signal input output end of rf analog front-end module is connected with the signal I/O of digitial controller module, digitial controller module by signal input/output terminal is connected with EEPROM module signal I/O, and the signal input part of digitial controller module is connected with the signal output part of Temperature Humidity Sensor.The utility model is designed by the low consumption circuit of CMOS Temperature Humidity Sensor, and high-performance label chip system architecture design method realizes passive RFID humiture label function.
Description
Technical field
The utility model relates to a kind of novel sensor being applicable to Internet of Things and belongs to Internet of Things application.
Background technology
REID (RFID) is as the automatic identification and data collection technology of a kind of advanced person, successfully be applied to the every field such as the manufacturing, logistics management, public safety, radio-frequency (RF) tag being combined with Temperature Humidity Sensor can humiture environmental data residing for detection of a target object.By the sensor integration of RFID label chip and low-power consumption or combination, significantly increase the power consumption of whole RFID, the product released in the market is nearly all active sensor RFID label tag.Because cost is higher, high value field can only be used for, be difficult to the low cost demand meeting large-scale application.The utility model is by the low-power dissipation system framework of RFID Temperature Humidity Sensor electronic label chip, and Circuits System low power consumption design method, embeddable method for designing, reduce system power dissipation, to realize the combination of passive RFID and Temperature Humidity Sensor.Thus reduction cost of manufacture, increase serviceable life, realize applying on a large scale.In rugged surroundings, data can be sent without the need to manual operation Real-time Collection simultaneously.
Utility model content
It is higher that the utility model is mainly the existing active humiture radio-frequency (RF) tag cost of manufacture of solution, is only applicable to high value field, is difficult to the low cost demand meeting large-scale application.The utility model provides following technical scheme for this reason:
Be applicable to a novel sensor for Internet of Things, it is characterized in that comprising rf analog front-end module, digitial controller module, Temperature Humidity Sensor module, EEPROM module; Rf analog front-end module comprises rectification circuit, mu balanced circuit, clock extracting circuit, reset circuit, modulation/demodulation circuit; Digitial controller module comprises CRC school inspection module, transmitting-receiving control module, anti-collision module, modulation /demodulation module; Temperature Humidity Sensor module comprises temperature sensor module, moisture sensor module; Temperature sensor module comprises PATA voltage generation module, constant current source, comparer, counter; Humidity sensor comprises the wet element of sense, sensor controls oscillator, phase detector, numerically-controlled oscillator.The power output end of rf analog front-end module is connected with the power input of Temperature Humidity Sensor module, the power output end of rf analog front-end module is connected with the power input of digitial controller module, the signal input output end of rf analog front-end module is connected with the signal I/O of digitial controller module, the signal input part of digitial controller module is connected with the signal output part of Temperature Humidity Sensor module, and signal input and output and the EEPROM module signal of digitial controller module export load module and be connected.
Temperature Humidity Sensor is integrated in passive RFID radio frequency tag chip by the utility model, adopts low power architecture.Designed a kind of based on standard CMOS processes, low-cost capacitive formula humidity sensor unit without the need to any technique aftertreatment by CMOS technology; Utilize band gap voltage difference detected temperatures to obtain the good current-temperature relation of the linearity, the power consumption simultaneously by adopting module reuse technology to reduce PATA voltage generating module, makes constant current source be operated in sub-threshold region to reduce power consumption.Reader ultrahigh frequency microwave signal is converted into electric field energy by rf analog front-end module, and then provides the power supply supply of whole tag system.By digital Capacitance-type sensor interface circuit, directly sensor electrical capacitance is converted to numeral and exports, reduce supply voltage to reduce power consumption.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: the present embodiment is implemented under premised on technical solutions of the utility model, gives detailed embodiment, but protection domain of the present utility model is not limited to following embodiment.
1, as shown in drawings, a kind of novel sensor being applicable to Internet of Things, it is characterized in that, comprise rf analog front-end module (1), digitial controller module (2), Temperature Humidity Sensor module (3), EEPROM module (4); Rf analog front-end module (1) comprises rectification circuit (1.1), mu balanced circuit (1.2), clock extracting circuit (1.3), reset circuit (1.4), modulation/demodulation circuit (1.5); Digitial controller module (2) comprises CRC school inspection module (2.1), transmitting-receiving control module (2.2), anti-collision module (2.3), modulation /demodulation module (2.4); Temperature Humidity Sensor module (3) comprises temperature sensor module (3.1), moisture sensor module (3.2); Temperature sensor module comprises PATA voltage generation module (3.1.1), constant current source (3.1.2), comparer (3.1.3), counter (3.1.4); Humidity sensor comprises the wet element (3.2.3) of sense, sensor controls oscillator (3.2.1), phase detector (3.2.2), numerically-controlled oscillator (3.2.4).
2, the power output end of rf analog front-end module (1) is connected with the power input of Temperature Humidity Sensor module (3), the power output end of rf analog front-end module (1) is connected with the power input of digitial controller module (2), the signal input output end of rf analog front-end module (1) is connected with the signal I/O of digitial controller module (2), the signal input part of digitial controller module (2) is connected with the signal output part of Temperature Humidity Sensor module (3), the signal input and output of digitial controller module (2) export load module with EEPROM module (4) signal and are connected.
Magnetic field energy is converted into electric field energy by rectification circuit by this concrete utility model sensor tag rf analog front-end module, the voltage obtained by mu balanced circuit be directly supplied to digitial controller, storer and temperature sensor three part be used as power supply.Carry out modulating/demodulating by the data of modulation/demodulation circuit to turnover RFID label tag, reset circuit provides reset signal for sequential circuit.Clock extracting circuit extracts circuit and normally to work required clock in carrier wave.
Digitial controller module, by anti-collision module, the data that send over of transmitting-receiving control module, modulation /demodulation resume module mimic channel and temperature sensor, is responsible for controlling the communication with read write line, carries out communication according to the requirement of read write line and EEPROM simultaneously.
Temperature sensor mainly comprises PTAT voltage generating module and single-slope ADC module.Wherein PTAT voltage generating module detects a voltage signal be directly proportional to temperature by band gap.Select single-slope ADC module to process the voltage signal exported, be converted into numeral and export.Single-slope ADC module comprises constant current source module and comparator module two parts, wherein constant current source module in charge produces a steady current all had nothing to do with temperature and supply voltage, and PTAT voltage compares to capacitor charging voltage thus draws a duration of charging be directly proportional to temperature by comparator module.This duration of charging is sent into digital module be further processed and can draw temperature, the value drawn transfers to memory storage.Reader these data returned by storer when will read temperature.
Humidity sensor adopts in top layer metallic layer and makes interdigital structure electrode, directly sensor electrical capacitance is converted to frequency signal, under therefore circuit can be operated in lower supply voltage, reduces the power consumption of whole circuit by PLL interface circuit.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model embodiment discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (2)
1. be applicable to a novel sensor for Internet of Things, it is characterized in that: comprise rf analog front-end module (1), digitial controller module (2), Temperature Humidity Sensor module (3), EEPROM module (4), rf analog front-end module (1) comprises rectification circuit (1.1), mu balanced circuit (1.2), clock extracting circuit (1.3), reset circuit (1.4), modulation/demodulation circuit (1.5), digitial controller module (2) comprises CRC school inspection module (2.1), transmitting-receiving control module (2.2), anti-collision module (2.3), modulation /demodulation module (2.4), Temperature Humidity Sensor module (3) comprises temperature sensor module (3.1), moisture sensor module (3.2), temperature sensor module comprises PATA voltage generation module (3.1.1), constant current source (3.1.2), comparer (3.1.3), counter (3.1.4), humidity sensor comprises the wet element (3.2.3) of sense, sensor controls oscillator (3.2.1), phase detector (3.2.2), numerically-controlled oscillator (3.2.4), the power output end of rf analog front-end module (1) is connected with the power input of Temperature Humidity Sensor module (3), the power output end of rf analog front-end module (1) is connected with the power input of digitial controller module (2), the signal input output end of rf analog front-end module (1) is connected with the signal I/O of digitial controller module (2), the signal input part of digitial controller module (2) is connected with the signal output part of Temperature Humidity Sensor module (3), the signal input and output of digitial controller module (2) export load module with EEPROM module (4) signal and are connected.
2. a kind of novel sensor being applicable to Internet of Things according to claim 1, is characterized in that: temperature sensor is made up of PTAT voltage generating module and single-slope ADC module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520224236.3U CN204514381U (en) | 2015-04-15 | 2015-04-15 | A kind of novel sensor being applicable to Internet of Things |
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| CN201520224236.3U CN204514381U (en) | 2015-04-15 | 2015-04-15 | A kind of novel sensor being applicable to Internet of Things |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292370A (en) * | 2016-09-13 | 2017-01-04 | 广东工业大学 | A kind of wireless sensor node |
| CN106370230A (en) * | 2016-09-13 | 2017-02-01 | 广东工业大学 | Wireless humiture sensor node |
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2015
- 2015-04-15 CN CN201520224236.3U patent/CN204514381U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292370A (en) * | 2016-09-13 | 2017-01-04 | 广东工业大学 | A kind of wireless sensor node |
| CN106370230A (en) * | 2016-09-13 | 2017-02-01 | 广东工业大学 | Wireless humiture sensor node |
| CN106292370B (en) * | 2016-09-13 | 2018-12-14 | 广东工业大学 | A kind of wireless sensor node |
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