CN110269599A - A kind of low-power consumption method of sampling - Google Patents

A kind of low-power consumption method of sampling Download PDF

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Publication number
CN110269599A
CN110269599A CN201910449399.4A CN201910449399A CN110269599A CN 110269599 A CN110269599 A CN 110269599A CN 201910449399 A CN201910449399 A CN 201910449399A CN 110269599 A CN110269599 A CN 110269599A
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China
Prior art keywords
sampling
energy supply
energy
signal
event
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CN201910449399.4A
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张岩
董鹏辉
胡琴琴
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University of Electronic Science and Technology of China
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University of Electronic Science and Technology of China
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Priority to CN201910449399.4A priority Critical patent/CN110269599A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Power Engineering (AREA)
  • Physiology (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

The present invention proposes a kind of low-power consumption method of sampling, which is characterized in that energy supply event occurs, and trigger signal sample event occurs when the generation of energy supply event, and realization is sampled to by sampled signal；Energy supply event terminates, and signal sampling event terminates at the end of energy supply event；The energy supply event interruption occurs, and energy supply event occurs to realize power supply, and energy supply event terminates to terminate to power；N-th energy supply event occurs, and terminates after duration T n.Sampling process is controlled by the intermittent supply of control energy, signal sampling work is carried out, energy is made to be efficiently used for signal sampling.Sampling device suspend mode or closing within the sampling interval, it is waken up in the moment that interruption supplying energy reaches and keeps waking up one section of regular time, it is sampled to by sampled signal, greatly reduces the consumption of energy, to realize the consumption for reducing energy in sampling process.

Description

A kind of low-power consumption method of sampling
Technical field
The present invention relates to field of signal processing, especially a kind of low-power consumption method of sampling.
Background technique
Signal sampling is also referred to as sampled (sample), is the discretization of continuous signal in time, i.e., according between certain time Its instantaneous value is taken point by point on analog signal x (t) every △ t.It is replaced with signal sample sequence at regular intervals original Continuous signal in time, that is, in time by analog signal discretization.Make in classical signal sampling and signal processing Sampling technique is time driving.Under the control of sampling clock, sampling unit collects a point and waits next point Arrival.When the frequency of input signal is lower, seldom energy is can be used acquisition a little is rapidly completed, so in sampling unit The a large amount of energy of post consumption and time wait next sampled point.In this sampling process, sampling unit can wave when waiting Take mass energy.Sampling process is realized by electronic equipment.For electronic equipment, what is primarily solved is exactly that power supply is asked Topic.Electronic product is powered using battery mostly at present, but the battery capacity that itself is equipped with often is limited, if equipment is long Time service, the battery of outfit must not be able to satisfy the demand to work long hours.Especially telework equipment, battery is more Change make it is highly inconvenient.In the case where not enough power supply, the sampled data that sample devices obtains can malfunction, to influence subsequent The process of data analysis.
Summary of the invention
Goal of the invention of the invention is: being directed to above-mentioned problems of the prior art, provides a kind of low-power consumption sampling Method can control sampling process by the intermittent supply of control energy, carry out signal sampling work, use energy efficiently In signal sampling, the consumption for reducing energy in sampling process is realized.
The invention is realized by the following technical scheme: providing a kind of low-power consumption method of sampling, energy supply event occurs, energy The generation trigger signal sample event for measuring supply event occurs, and realizes to the process sampled by sampled signal；Energy supply Event terminates, and at the end of energy supply event, signal sampling event terminates；The energy supply event interruption occurs m times；Often When secondary energy supply event occurs, start to realize power supply；After continuing energy supply time section, at the end of energy supply event, that is, terminate Power supply；After continuing the non-power providing period, energy supply event occurs next time.
Further, the signal sampling event specifically: Sampling device starts and works, and adopts to by sampled signal Sample；In the non-power providing period, the Sampling device is in suspend mode or off state.
Further, the energy supply time section of the energy supply event is greater than or equal to Sampling device and is adopted from starting to The time required to sample.
Further, it is Δ t that each energy supply event energy supply time section lasting after occurring is equal1。
Further, it is Δ t that the non-power providing period lasting after each sampled energy supply event is equal2。
Further, the average frequency that the energy supply event occurs is equal to or more than by the maximum frequency of sampled signal 2 times.
Further, it is described by sampled signal before being sampled, first pass through filtering processing.
Further, the filtering processing is specially low-pass filtering treatment.
Further, the method for sampling further includes quantifying to sampled signal, to sampled signal correspond to the time and Quantization post-sampling signal is stored.
The beneficial effects of the present invention are:
1. controlling sampling process by the intermittent supply of control energy in the present invention, signal sampling work is carried out, is enabled Amount is efficiently used for signal sampling, realizes the consumption for reducing energy in sampling process.
2. in the present invention, Sampling device suspend mode or closing within the sampling interval are called out in the moment that interruption supplying energy reaches It wakes up and is kept for one section of regular time of wake-up realize and sampled to by sampled signal, greatly reduce the consumption of energy.
3. in the present invention, being realized using frequency overlapped-resistable filter by the effect of partial filtration unconcerned outside bandwidth, Ke Yi great The big resolution ratio for increasing signal in bandwidth.
4. the present invention realizes the low-power consumption method of sampling, the consumption of energy in sampling process is reduced, so that telework equipment It realizes and effectively works for a long time, meanwhile, reduce leads to the general of error in data generation because of not enough power supply in equipment work Rate.
Detailed description of the invention
Fig. 1 self energizing sampling frame figure.
Case is embodied
It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention Technical solution of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application.
Embodiment 1
Embodiment 1 is a kind of low-power consumption method of sampling, and energy supply event occurs, and the generation of energy supply event triggers letter Number sample event occurs, and realizes to the process sampled by sampled signal；Energy supply event terminates, when energy supply event At the end of, signal sampling event terminates；The energy supply event interruption occurs m times；When each energy supply event occurs, open Begin to realize power supply；After continuing energy supply time section, at the end of energy supply event, that is, terminate to power；After continuing the non-power providing period, Energy supply event occurs next time.
Further, the signal sampling event specifically: Sampling device starts and works, and adopts to by sampled signal Sample；In the non-power providing period, the Sampling device is in suspend mode or off state.
It can be wherein the periodic signals such as heart rate signal by sampled signal.
Further, the energy supply time section of the energy supply event is greater than or equal to Sampling device and is adopted from starting to The time required to sample.
Further, it is Δ t that each energy supply event energy supply time section lasting after occurring is equal1。
Further, it is Δ t that the non-power providing period lasting after each sampled energy supply event is equal2。
Further, the average frequency that the energy supply event occurs is equal to or more than by the maximum frequency of sampled signal 2 times.
Lasting energy supply time section is equal after each energy supply event occurs and each sampled energy supplies event knot When the lasting non-power providing period is equal after beam, energy supply event is occurred with a fixed cycle.Its period are as follows:
T=Δ t1+Δt2
The then average frequency that energy occurs are as follows:
Lasting energy supply time section is unequal after each energy supply event occurs, or sampled energy supplies thing every time When the lasting non-power providing period is unequal after part, the average frequency of energy generation are as follows:
Wherein TtotalFor the total time-consuming of m energy supply event.
Further, it is described by sampled signal before being sampled, first pass through filtering processing.
Further, the filtering processing is specially low-pass filtering treatment.
Further, the method for sampling further includes quantifying to sampled signal, to sampled signal correspond to the time and Quantization post-sampling signal is stored.
Embodiment 2
In the present embodiment, the interruption generation of energy supply is controlled by piezoelectric energy collecting device.Collection of energy device can Collector walks, the regular vibrational energy such as heartbeat and generates interval electric energy, usually by piezoelectric device and periphery electricity Road composition.This part is the source of entire self energizing sampled energy.Energy management device is mainly received to by collection of energy device The energy of collection is managed, and generates required voltage, such as comparison voltage, supply voltage etc. when self energizing sampling operation.We Many interval energy are generated using energy harvester and energy manager, the duration of each interval energy is Δ t1, every two Interval time Δ t between a interval energy2.Each interval energy can make self-powered sampling apparatus work primary.It is anti-aliasing Filter is realized herein by the effect of partial filtration unconcerned outside bandwidth, because the bandwidth of analog signal is often unlimited Wide, only retain the signal in bandwidth, the resolution ratio of signal in bandwidth can be greatly increased.Sampling keeps module to realize It is spaced under the control of energy, input signal is saved, and equally in energy supply, the signal of storage is remained behind, It is not influenced by input signal, this completes the functions of the data sampling to input signal.RTC is used to note down sampled point Time.Quantization is completed to oneself resolution of the stored signal in amplitude, by signal amplitude entirety interval division at several pieces, and It is in which block according to the amplitude of the signal stored, determines the size after its quantization.Storage is completed to having sampled The preservation of point and sampling time, facilitates post-processing sampled data.
Secondly we introduce the specific work process of self energizing sampling system.The course of work of the system can be divided into 6 Point.
1. piezoelectric self-power supplied equipment collects energy from environment, after the processing of energy management module, forms energy and supply Sequence is answered, the duration of this energy sequence is Δ t1, the interval between every two energy sequence is It is random , this energy sequence can be indicated with square pulse function:
Wherein
2. in order to avoid sampling after aliasing, before sampling increase a frequency overlapped-resistable filter AAF, usually one Low-pass filter:
Its impulse response are as follows:
Wherein ωcFor the maximum spectrum component of original signal A (t).
3. we filter out other noises unrelated with original signal, we obtain first signal by AAF before sampling starts After filtering out noise by sampled signal AAAF(t):
AAAF(t)=A (t) h (t)
4. sampling starts then in the case where the supply of self energizing energy sequence.Self energizing energy sequence can be at this time It is abstracted into periodic pulse train.To the signal A of sampling instantAAF(t) value is saved, meanwhile, RTC records corresponding sampling At the time of point, this completes the data samplings to input signal.Ours has arrived in tRTCThe value of time-ofday signals, is adopted Sample signal sequence: AAAF(tRTC)。
5. resolution of the value of the sampled signal sequence stored to oneself in amplitude is completed in quantization, by signal amplitude entirety area Between be divided into several pieces, and which block is according to the amplitude of the signal stored, determines the size after its quantization. As this with common quantization is.
6. finally to after quantization value and the sampling time store.
Self energizing sampling system in implementation is as shown in Figure 1, wherein A (t) is by sampled signal.
In terms of heart rate monitoring, implanted electronic equipment is a selection well.But the use of implanted electronic equipment Time is largely limited by battery life, once battery exhausts, it is necessary to and operation replacement periodically is carried out, gives patient Physiology and psychological pain are brought, medical treatment cost is increased, low-power consumption sampling can very easily solve this problem.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.This specification (including any accessory claim, abstract) Disclosed in any feature can be replaced by other alternative features that are equivalent or have similar purpose unless specifically stated. That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (9)

1. a kind of low-power consumption method of sampling, which is characterized in that energy supply event occurs, and the generation of energy supply event triggers letter Number sample event occurs, and realizes to the process sampled by sampled signal；Energy supply event terminates, when energy supply event At the end of, signal sampling event terminates；
The energy supply event interruption occurs m times；When each energy supply event occurs, start to realize power supply；Lasting energy supply After period, at the end of energy supply event, that is, terminate to power；After continuing the non-power providing period, energy supply event next time Occur.
2. a kind of low-power consumption method of sampling as described in claim 1, which is characterized in that the signal sampling event specifically: Sampling device starts and works, and samples to by sampled signal；In the non-power providing period, the Sampling device be in suspend mode or Off state.
3. a kind of low-power consumption method of sampling as claimed in claim 2, which is characterized in that when the energy supply of the energy supply event Between section be greater than or equal to Sampling device the time required to start to and sampled.
4. a kind of low-power consumption method of sampling as described in one of claims 1 to 3, which is characterized in that each energy supply event It is Δ t that section of lasting energy supply time is equal after generation1。
5. a kind of low-power consumption method of sampling as claimed in claim 4, which is characterized in that each sampled energy supply event terminates It is Δ t that the lasting non-power providing period is equal afterwards2。
6. a kind of low-power consumption method of sampling as described in one of claim 1 to 5, which is characterized in that the energy supply event The average frequency of generation is equal to or more than by 2 times of the maximum frequency of sampled signal.
7. a kind of low-power consumption method of sampling as described in one of claim 1 to 5, which is characterized in that described to be existed by sampled signal Before sampling, filtering processing is first passed through.
8. a kind of low-power consumption method of sampling as claimed in claim 7, which is characterized in that the filtering processing is specially low pass filtered Wave processing.
9. a kind of low-power consumption method of sampling as described in one of claim 1 to 5, which is characterized in that the method for sampling is also wrapped It includes and sampled signal is quantified, the time is corresponded to sampled signal and quantization post-sampling signal stores.
CN201910449399.4A 2019-05-28 2019-05-28 A kind of low-power consumption method of sampling Pending CN110269599A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102137476A (en) * 2010-01-21 2011-07-27 广州市香港科大霍英东研究院 Method for realizing low power consumption of portable wireless monitoring terminal
CN207424220U (en) * 2017-11-27 2018-05-29 泉州装备制造研究所 A kind of smart UPS battery management and health status monitoring system
EP3387990A1 (en) * 2017-03-28 2018-10-17 IMEC vzw System and method for heart rate detection with motion artifact reduction
CN109143075A (en) * 2018-07-16 2019-01-04 苏州朗捷通智能科技有限公司 A kind of acquisition method and system of voltage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102137476A (en) * 2010-01-21 2011-07-27 广州市香港科大霍英东研究院 Method for realizing low power consumption of portable wireless monitoring terminal
EP3387990A1 (en) * 2017-03-28 2018-10-17 IMEC vzw System and method for heart rate detection with motion artifact reduction
CN207424220U (en) * 2017-11-27 2018-05-29 泉州装备制造研究所 A kind of smart UPS battery management and health status monitoring system
CN109143075A (en) * 2018-07-16 2019-01-04 苏州朗捷通智能科技有限公司 A kind of acquisition method and system of voltage

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Application publication date: 20190924