CN103023522B - Ultra-low power consumption awakening receiver of wireless node of internet of things and short-distance wireless internet - Google Patents
Ultra-low power consumption awakening receiver of wireless node of internet of things and short-distance wireless internet Download PDFInfo
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- CN103023522B CN103023522B CN201210517443.9A CN201210517443A CN103023522B CN 103023522 B CN103023522 B CN 103023522B CN 201210517443 A CN201210517443 A CN 201210517443A CN 103023522 B CN103023522 B CN 103023522B
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Abstract
The invention relates to an ultra-low power consumption awakening receiver of a wireless node of the internet of things and the short-distance wireless internet. The ultra-low power consumption awakening receiver comprises a radio-frequency signal matching network, a front end amplifier, an envelope detector, a limiting amplifier, a first comparator, an integrator, a second comparator and an edge trigger. The radio-frequency signal matching network is used for achieving impedance matching of the front end amplifier and an antenna. The front end amplifier is used for amplifying signals. The envelope detector is used for detecting amplitude envelope of the signals and converting the signals to differential pulse signals. The limiting amplifier is used for amplifying the differential pulse signals. The first comparator is used for converting the input differential pulse signals to single-ended pulse signals. The integrator is used for integrating the single-ended pulse signals. The second comparator is used for comparing the integrated voltage signals and reference voltage signals. The edge trigger is used for awakening an anode chip to enter the working mode according to the comparing result of the second comparator. The ultra-low power consumption awakening receiver is used for externally remotely controlling the wireless network node to lead the wireless network node to accord with network scheduling or used for controlling the working state of the short-distance wireless internet and information transmission nodes.
Description
Technical field
The present invention relates to the Low-power Technology field of Internet of Things radio communication, particularly relate to a kind of super low-power consumption for Internet of Things and short-range wireless connectivity radio node and wake receiver up.
Background technology
Technology of Internet of things will be widely used in the every aspect of economic life and national security at foreseeable future, and more and more in depth have influence on economic development (such as in finance, logistics, the aspects such as business) and social life and national security (such as disaster monitoring, early warning etc.).Relative to wireless interconnection technologies easily, the power problems of node circuit and whole system will become its restriction be extensively suitable for more and more significantly.For a large amount of Internet of things node scattered, adopting power line to power obviously is unpractical also inappropriate solution.And adopting powered battery, the frequent long-term stable operation of battery to system of changing brings very big inconvenience, and on cost and cost, also very huge being even difficult to bears.In some certain applications, such as human body implants node, and frequent battery of changing not only causes considerable distress to guardianship, also brings extreme difficulties to practical application.Adopt in battery powered mobile device same, low-power consumption energy-efficient technology is one of technology improving systematic function, and in technology of Internet of things, extremely low power dissipation energy-efficient technology will be the key core technology determining Internet of Things practicality.Can predict, the key factor that the power consumption of node circuit and energy efficiency will be bitter networking broad practice.Power problems and energy efficiency are the bottlenecks of a large amount of distribution node technology of Internet of things extensive use relying on wireless interconnection technologies.
Summary of the invention
The super low-power consumption that technical problem to be solved by this invention is to provide a kind of Internet of Things and short-range wireless connectivity radio node wakes receiver up, controls wireless network node, makes it meet network scheduling.
The technical solution adopted for the present invention to solve the technical problems is: provide the super low-power consumption of a kind of Internet of Things radio node and short-range wireless connectivity to wake receiver up, comprise the radiofrequency signal matching network of cascade, front-end amplifier, envelope detector, limiting amplifier, the first comparator, integrator, the second comparator and edge triggered flip flop; Described radiofrequency signal matching network is for realizing the impedance matching between front-end amplifier and antenna; Described front-end amplifier is used for amplifying signal; Signal for detecting the amplitude envelops of signal, and is transformed into differential pulse signal by described envelope detector; Described limiting amplifier is for amplifying differential pulse signal; Described first comparator is used for changing the differential pulse signal of input into single sided pulse signal; Described integrator is used for carrying out integration to single sided pulse signal; Described second comparator is used for the voltage signal after integration and reference voltage signal to compare; Described edge triggered flip flop wakes node chip up according to the comparative result of the second comparator and enters mode of operation.
When in the wakeup time specified, integrated signal voltage amplitude is greater than the reference voltage of the second comparator, the second comparator sends signal to edge triggered flip flop, and wake on wireless transceiver enters operating state.
Described radiofrequency signal matching network adopts LC match circuit to realize.
Described edge triggered flip flop is rising edge flip-flops, is stored by the high level signal exported.
Described integrator and edge triggered flip flop are passive circuit structure.
The power consumption of described front-end amplifier is 55uW.
The power consumption of described envelope detector is 16uW.
The power consumption of described limiting amplifier is 8.6uW.
The power consumption of described first comparator and the second comparator is all less than 3.6uW.
Described super low-power consumption wakes receiver modulation system up and adopts OOK modulation, and carrier frequency is 780MHz.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: the present invention adopts that simple, practical to be core with envelope detection structure wake receiving circuit up, in employing low power dissipation design situation, can greatly reduce power consumption; Have employed passive integrator (Integrator) and edge triggered flip flop (Trigger) reduces false triggering probability; Under suitable design condition, the sensitivity that accepts waking receiver circuit up reaches-70dBm, below power consumption 100uW.
Accompanying drawing explanation
Fig. 1 is the Internet of Things radio node schematic diagram with wireless awakening function;
Fig. 2 is that the ultra-low power consumption wireless that the present invention proposes wakes receiver system Organization Chart up;
Fig. 3 is PCB circuit catenation principle figure of the present invention.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
There is the Internet of Things of wireless awakening function, short-range wireless connectivity and information transmission radio node schematic diagram as shown in Figure 1.Wake receiver up always in the monitoring state, receiver and the transmitting chain of node master chip are all in resting state.In time specific radio node being had to communication requirement, a communication requirement instruction is sent to it, wake receiver detection up and receive this signal, a wake-up signal is produced by data processing, for waking master chip up, make it enter mode of operation (receive or send), communicate with other nodes.Due to the interruption of wake-up signal after sign off, master chip comes back to park mode, wakes receiver up and keeps monitor state, waits for communication requirement next time.
The super low-power consumption that can be used for Internet of Things, short-range wireless connectivity and information transmission radio node that the present invention proposes wakes receiver system framework up as shown in Figure 2, comprises the radiofrequency signal matching network of cascade, front-end amplifier, envelope detector, limiting amplifier, the first comparator, integrator, the second comparator and edge triggered flip flop; Described radiofrequency signal matching network is for realizing the impedance matching between front-end amplifier and antenna; Described front-end amplifier is used for amplifying signal; Signal for detecting the amplitude envelops of signal, and is transformed into differential pulse signal by described envelope detector; Described limiting amplifier is for amplifying differential pulse signal; Described first comparator is used for changing the differential pulse signal of input into single sided pulse signal; Described integrator is used for carrying out integration to single sided pulse signal; Described second comparator is used for the voltage signal after integration and reference voltage signal to compare; Described edge triggered flip flop wakes node chip up according to the comparative result of the second comparator and enters mode of operation.Fig. 3 is PCB circuit connection diagram of the present invention.
The invention enables node platform greatly to reduce the power consumption of node circuit, greatly extend the operating time of node circuit, thus greatly reduce the cost of node circuit power supply renewal.Greatly improve technical advantage and the range of application of Internet of Things, reduce the use cost of Internet of Things.From the development of whole wireless interconnection technologies, low consumption circuit more and more will occupy critical role, and the node platform being therefore feature with low-power consumption, high integration occupies the status of applying by the radio node circuit application of Internet of Things.Low-consumption wireless awakening technology is exactly a kind of management strategy and actualizing technology based on improving energy efficiency.
This receiver, to realize, premised on low-power consumption, high energy efficiency, controlling wireless network node, makes it meet network scheduling.Each circuit module is described as follows:
Radio frequency matching network (Matching) completes the impedance matching between front-end amplifier (FEA) and antenna.
Front-end amplifier (FEA) is super low-power consumption, and high voltage gain designs, for improving receiving sensitivity.
Envelope detector (ED), for the voltage amplitude envelope of detectable signal, realizes down-conversion, and after making frequency conversion, frequency equals OOK signal data rate, is also ultralow Consumption simultaneously.
Limiting amplifier is ultralow Consumption, for the differential signal that amplification detector exports, can drive first comparator (Comparator1) of back.
The differential signal that limiting amplifier exports to amplify as a pulse amplifier and is transformed into single-ended signal by the first comparator (Comparator1), is also ultralow Consumption simultaneously.
Integrator (Integrator) can be designed to passive structures, carries out integration to the output signal of the first comparator.
Second comparator (Comparator2) is super low-power consumption, high precision design, utilizes the comparison of front integrated signal and reference voltage signal to determine whether produce wake-up signal.
Edge triggered flip flop (Trigger) for rising edge effective, keep for the wake-up signal that front comparator is exported, make it have time enough activation master chip.
Wake receiver in the present invention up always in the monitoring state, the energy itself consumed must low (power consumption well below node chip receiving-transmitting chain) very, could meet the requirement of ultralow Consumption.Wake receiver modulation system up and adopt OOK modulation, carrier frequency is 780MHz, and data transfer rate is less than 500kbps.Utilize detection structure receiver to control network node, make its operating state meet network scheduling.When node does not need to be in resting state when communication, need to be waken up when communication, thus substantially prolongs node battery, improve capacity usage ratio.
After radiofrequency signal is by matching network, enter the super low-power consumption front-end amplifier (FEA) of high voltage gain, signal is amplified; The envelope detector (ED) of low-power-consumptiohigh-sensitivity high-sensitivity detects the amplitude envelops of signal, and is transformed into differential signal, realizes down-conversion (converted signals becomes the pulse signal that frequency equals data transfer rate); Limiting amplifier (Limiter) well can drive the comparator circuit of back after being amplified by pulse signal; Differential input signal, in a link as a pulse amplifier, is become the single sided pulse signal of 0V to 1.2V by the first comparator (Comparator1), enters integrator (Integrator); Integrated signal in time slowly become finally be tending towards saturated greatly, when in the wakeup time (<500us) specified, integrated signal voltage amplitude is greater than the reference voltage of the second comparator (Comparator2), the second comparator (Comparator2) exports high level (change procedure produces a rising edge); The recycling effective edge triggered flip flop of rising edge (Trigger), storing the high level signal exported, entering mode of operation for waking node chip up.
In the design, power supply voltage is 1.2V; Front-end amplifier (FEA) power consumption is 55uW, and voltage gain is greater than 30dB; Envelope detector (ED) and limiting amplifier (Limiter) power consumption are respectively 16uW and 8.6uW; Comparator (Comparator1, Comparator2) power consumption is all less than 3.6uW; Integrator (Integrator) and edge triggered flip flop (Trigger) are passive circuit structure, not consumed energy; The biasing circuit total power consumption of all modules is less than 12uW.Test result shows this and wakes the power consumption <100uW of receiver own up, when signal to noise ratio is 12dB, and sensitivity-70dBm, the wireless awakening function realizing super low-power consumption that can be correct.
Claims (9)
1. the super low-power consumption of an Internet of Things and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, comprise the radiofrequency signal matching network of cascade, front-end amplifier, envelope detector, limiting amplifier, the first comparator, integrator, the second comparator and edge triggered flip flop; Described radiofrequency signal matching network is for realizing the impedance matching between front-end amplifier and antenna; Described front-end amplifier is used for amplifying signal; Signal for detecting the amplitude envelops of signal, and is transformed into differential pulse signal by described envelope detector; Described limiting amplifier is for amplifying differential pulse signal; Described first comparator is used for changing the differential pulse signal of input into single sided pulse signal; Described integrator is used for carrying out integration to single sided pulse signal; Described second comparator is used for the voltage signal after integration and reference voltage signal to compare; Described edge triggered flip flop wakes node chip up according to the comparative result of the second comparator and enters mode of operation; When in the wakeup time specified, integrated signal voltage amplitude is greater than the reference voltage of the second comparator, the second comparator sends signal to edge triggered flip flop, wakes node chip up and enters operating state.
2. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, described radiofrequency signal matching network adopts LC match circuit to realize.
3. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, described edge triggered flip flop is rising edge flip-flops, by the output forward position of detection second comparator, and is stored by the high level signal exported.
4. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, described integrator and edge triggered flip flop are passive circuit structure.
5. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, the power consumption of described front-end amplifier is 55uW.
6. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, the power consumption of described envelope detector is 16uW.
7. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, the power consumption of described limiting amplifier is 8.6uW.
8. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, the power consumption of described first comparator and the second comparator is all less than 3.6uW.
9. the super low-power consumption of Internet of Things according to claim 1 and short-range wireless connectivity radio node wakes receiver up, it is characterized in that, described super low-power consumption wakes receiver modulation system up and adopts OOK modulation, and carrier frequency is 780MHz.
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| CN104363980A (en) * | 2013-12-17 | 2015-02-18 | 深圳普得技术有限公司 | LED driving device, driving method and LED lamp |
| CN107547459A (en) * | 2016-06-23 | 2018-01-05 | 中兴通讯股份有限公司 | Data emitting method, method of reseptance, emitter and reception device |
| CN109121188A (en) * | 2017-06-26 | 2019-01-01 | 中国电信股份有限公司 | Internet-of-things terminal, system and the awakening method for internet-of-things terminal |
| CN108810842B (en) * | 2018-05-23 | 2021-01-19 | 华南理工大学 | Wireless sensor network node and MAC protocol method for node |
| CN110557811B (en) * | 2018-06-04 | 2021-10-26 | 大唐移动通信设备有限公司 | Energy-saving signal sending method, energy-saving signal receiving method, base station and terminal |
| CN111969973B (en) * | 2020-08-25 | 2023-09-15 | 中国科学院上海高等研究院 | Low-power consumption internet of things transceiver system with wake-up circuit |
| CN112769440B (en) * | 2020-11-04 | 2022-03-18 | 山东科技大学 | Low-power-consumption digital intelligent USBL receiver |
| CN113162642B (en) * | 2021-02-07 | 2022-11-18 | 西安电子科技大学 | Wake-up receiver with low power consumption and high sensitivity |
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| CN100433520C (en) * | 2005-03-04 | 2008-11-12 | 崇贸科技股份有限公司 | Switching control device for primary side control output current of power supply |
| CN101271142B (en) * | 2007-03-21 | 2010-05-19 | 中国科学院电子学研究所 | Peak detection circuit integrated on CMOS single chip |
| US8374111B2 (en) * | 2010-06-28 | 2013-02-12 | Symbol Technologies, Inc. | Digital signage with on-demand power wake up |
| CN102254356B (en) * | 2010-12-21 | 2013-05-01 | 中国科学院电子学研究所 | ETC (electronic toll collection) system awakening circuit applicable to national standards |
| CN102324945A (en) * | 2011-05-26 | 2012-01-18 | 大连理工大学 | Wireless wakening circuit with address filtering function |
| CN202475404U (en) * | 2011-11-15 | 2012-10-03 | 南京矽志微电子有限公司 | Fully integrated CMOS super-regeneration time division multiplexing wireless receiver structure |
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