CN106683387A - Passive sensing device and passive type wireless sensing system - Google Patents
Passive sensing device and passive type wireless sensing system Download PDFInfo
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- CN106683387A CN106683387A CN201611134083.9A CN201611134083A CN106683387A CN 106683387 A CN106683387 A CN 106683387A CN 201611134083 A CN201611134083 A CN 201611134083A CN 106683387 A CN106683387 A CN 106683387A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention relates to a passive sensing device and a passive type wireless sensing system. The passive sensing device comprises a passive sensor and a sensor control circuit, wherein the passive sensor is used for sensing home environment indexes in a way of obtaining electric power from external electromagnetic signals, and converting the home environment indexes into digitized parameter data; the sensor control circuit is in electromagnetic coupling with the passive sensor, and is used for transmitting the electromagnetic signals to the passive sensor and receiving the digitized parameter data. The passive sensing device and the passive type wireless sensing system overcome the defects of the existing active sensor network, expand the application scopes of sensors, and meet the demands of severe environment for the sensor network.
Description
【Technical field】
The present invention relates to smart home field, more particularly to passive sensing devices and a kind of passive type wireless sensing system.
【Background technology】
The rise of radio sensing network so that the research and application of sensor network are more and more extensive, and passive and wireless is passed
Sensor as a kind of new sensor, with extreme environment adaptive faculty it is strong, powered from main source of energy, reliability is high the features such as.
In Traditional Industrialization production, in order to keep normal industrialized production in real time, using in greenhouse pressure sensor test industrial environment
Temperature, humidity and air pressure, but the closed environment factor of HTHP changes the wired sensing of conventional active in actual applications
The electrology characteristic of device, causes measurement data inaccurate, have impact on some special applications such as industrial production, inflammable and explosive strong high voltage
Occasion, site environment cannot provide safe and reliable power supply, cause sensor normally to use.
Therefore, the powerup issue of sensor has hindered the paces that it is applied with large-scale popularization to a certain extent.Pass
Sensor collection information is that measured data information is converted into electric signal to be transmitted, if while gathered data information, will
Electric signal as the energy supply of sensor, can thoroughly solve the power supply problem of system, and then realize sensor network simultaneously
Passive.
【The content of the invention】
To solve foregoing problems, the present invention proposes passive sensing devices and a kind of passive type wireless sensing system.Described
The transducing part of wireless sensing system uses passive mode, additionally, the sensor in wireless sensing system is used with control circuit
Distributing electromagnetic coupled mode carries out the exchange of power supply energy, reduces the limitation to power requirement of current active sensor
Property, solve demand of some adverse circumstances to sensor.
To reach object defined above, the scheme that the present invention is used for:Passive sensing devices, it is characterised in that including：
Passive sensor, senses domestic environment index and is converted to numeral in the way of obtaining electric power from extraneous electromagnetic signals
Change supplemental characteristic；
Electromagnetism couples the sensor control circuit of the passive sensor, believes for launching above-mentioned electromagnetism to the passive sensor
Number and receive above-mentioned digitlization supplemental characteristic.
Optionally, passive sensor also includes：
Antenna transmission circuit, launches and receives electromagnetic signal for predeterminated frequency；
The second data modulation circuitry of the antenna transmission circuit is coupled, for receiving the electromagnetism from sensor control circuit
Signal sends electromagnetic signal to sensor control circuit, and sets the predeterminated frequency；
The energy storage circuit of the antenna transmission circuit is coupled, for receiving energy that electromagnetic signal transmitted and being deposited
Storage；
The energy management circuit of the energy storage circuit is coupled, the accumulation of energy is transmitted for detecting；And
For sensing domestic environment index and being converted to the sensing circuit for digitizing supplemental characteristic, the sensing circuit coupling
The second above-mentioned modulation circuit and energy storage circuit, electric power is driven to be obtained under the threshold value that the energy management circuit sets.
Optionally, second data modulation circuitry is included：
Appearance/frequency converter, the physical signalling for passive sensor to be perceived is converted into digital fre-quency signal；
The frequency divider of the appearance/frequency converter is coupled, for processing the digital fre-quency signal after conversion；
Optionally, the wireless sensing device is installation by adhering in building sides.
Optionally, above-mentioned domestic environment index includes temperature, humidity, pressure value.
Another scheme, a kind of passive type wireless sensing system, including：
Several passive sensing devices as described in claim 1；
The data acquisition device of above-mentioned wireless sensing device is coupled, the digitlization for receiving passive sensing devices transmission
Supplemental characteristic；And
The gateway communicated with the data acquisition device, for the digitlization supplemental characteristic for receiving to be analyzed and visualized
Display.
Optionally, described sensor control circuit includes：
Oscillator；For producing carrier signal；
Power amplifier；Carrier signal for oscillator to be produced is amplified；
Antenna；For the carrier signal of amplification to be launched by it；
Detecting circuit；Target modulation signal is recovered from the brewed higher-order of oscillation；
First data modulation circuitry；And
Power circuit.
Optionally, between described passive sensor and sensor control circuit by way of distributing electromagnetic coupled come
Carry out energy transmission.
Optionally, described passive type wireless sensing system is based on MESH network, and described MESH network uses plane separation
From vector route agreement.
Optionally, data acquisition device may include microprocessor, power circuit, condition indication circuit, RF transmit-receive circuit,
Storage medium.
The present invention can reach following technique effect：Some drawbacks that current active sensor network is present are solved, is improve
The demand of the scope of application of sensor, particularly adverse circumstances to sensing network.
These features of the invention and advantage will be detailed in following specific embodiment, accompanying drawing exposure.This hair
Bright optimal implementation method or means will carry out detailed performance with reference to accompanying drawing, but be not the limitations to technical solution of the present invention.Separately
Outward, text and these features of appearance, key element and component in accompanying drawing are that have multiple in each of the lower, and are marked to represent convenient
Remember different symbol or numerals, but represent the part of same or similar construction or function.
【Brief description of the drawings】
The present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is a kind of system block diagram of radio sensing network of the invention；
Description of reference numerals：
1- passive sensing devices；11- sensor control circuits；12- passive sensors；111- power circuits；112- vibrates
Device；113- power amplifiers；The data modulation circuitries of 114- first；115- detecting circuits；116- antennas；121- energy managements electricity
Road；122- energy storage circuits；123- antenna transmission circuits；124- sensing circuits；The data modulation circuitries of 125- second；
2- data acquisition devices；201- power circuits；202- condition indication circuits；203- RF transmit-receive circuits；204- is micro-
Processor；205-RAM；206-FLASH；
3- gateways.
【Specific embodiment】
The technical scheme of the embodiment of the present invention is explained and illustrated with reference to the accompanying drawing of the embodiment of the present invention, but under
Embodiment only the preferred embodiments of the present invention are stated, and it is not all.Based on the embodiment in implementation method, those skilled in the art
Other embodiment is obtained on the premise of creative work is not made, protection scope of the present invention is belonged to.
" one embodiment " or " example " or " example " quoted in this manual means that itself is described in conjunction with the embodiments
Special characteristic, structure or characteristic can be included at least one embodiment disclosed in this patent.Phrase is " in one embodiment
In " appearance of each position in the description is not necessarily all referring to same embodiment.
The process step shown in the accompanying drawing appended by this specification is by including hardware (such as circuit, special logic list
Unit etc.), firmware (such as on general-purpose calculating appts or special purpose machinery run) or both combination treatment logic execution.
Although following each embodiment is to describe treatment according to some order operations, it is understood that, the step of some are described
Operation can be performed in different order.Additionally, some step operations can be executed in parallel rather than be sequentially performed.
Embodiment 1.
Referring to Fig. 1, a kind of passive type wireless sensing system mainly may include passive sensing devices 1, data acquisition device 2 with
And gateway 3.
Passive sensing devices 1 may include passive sensor 12 and sensor control circuit 11.
Sensor control circuit 11 is powered by external power source and is operated, and mainly includes power circuit 111, vibration
Device 112；Power amplifier 113；First data modulation circuitry 114；Detecting circuit 115；Antenna 116.During work, oscillator 112
The carrier signal of generation, by after the amplification of power amplifier 113, being launched by antenna 116, is that passive sensor 12 provides energy.
Needed for passive sensor 12 is obtained by between sensor control circuit 11 Non-contact electromagnetic coupling mode
Energy, by non-immediate power supply, realize passive.
Passive sensor 12 mainly includes energy management circuit 121；Energy storage circuit 122；Antenna transmission circuit 123；
Sensing circuit 124；Second data modulation circuitry 125.Second data modulation circuitry 125 includes appearance/frequency converter and frequency divider.
Data acquisition device 2 may include microprocessor 204, power circuit 201, condition indication circuit 202, radio-frequency receiving-transmitting electricity
Road 203, storage medium (such as RAM205, FLASH206).RF transmit-receive circuit 203 is used to be carried out between wireless sensor node
Radio communication, realizes node networking, data transmit-receive and intelligent MANET.
The data that gateway 3 is used for the device 2 to receiving are analyzed and show.
During specific works：
The carrier signal that oscillator 112 in sensor control circuit 11 is produced is by after the amplification of power amplifier 113, leading to
Cross antenna 116 to launch, the energy that the antenna transmission circuit 123 of passive sensor 12 is transmitted carrier signal passes through energy stores
Circuit 122 is stored, and after the energy of storage is met using threshold value, will drive 125 pairs of sensing letters of the second data modulation circuitry
Breath is acquired.Appearance/frequency converter in second data modulation circuitry 125, the physical signalling conversion that sensing circuit 124 is perceived
Into digital fre-quency signal；Using frequency divider, data frame is loaded into carrier wave by backscattered modulation.Sensor control circuit
11, using detecting circuit 115, the first data modulation circuitry 114, obtain final sensor information.
By peripheral interface circuit be transferred in data acquisition device 2 data of acquisition by sensor control circuit 11.Pass
The output format of sensor information is the mixing output of multi-parameter, and is one section of continuous square wave.Data output format be from
Synchronizing signal starts, and is then followed successively by temperature, humidity, pressure value information；The output signal of passive sensor determines that it is gathered
Mode is the signal acquisition based on timer counter principle；Counting according to synchronizing signal and sampling period and timer can be real
Existing sensor information temperature, humidity, the separation of pressure value information, the data by Signal separator that will be collected send again
Preceding treatment work, including data frame format, WSN agreements, then transmit data to the wireless transmission in data acquisition device 2
In buffering area.
In data acquisition is carried out, if gathered data does not enter into wireless transmission buffering area, data acquisition is lost
Lose, re-start data acquisition, until buffering area there are data to be sent to produce；Data to be sent are carried out to transmit treatment,
If condition indication circuit 202 does not flash, show that data do not send.Process sending failure, and to there is event
The data acquisition device 2 of barrier is reinitialized, until data is activation success.
In the sensor node of passive type wireless sensing system carries out communication process, transmission is based between node and node
Plan range vector route agreement.Plan range vector route agreement uses route requests, route replies and Route error conduct
Control information.If terminal node will be communicated with destination node, if there is destination node communication in routing table
Routed path when, do not carry out any operation；When being communicated with new destination node, route discovery function will be caused, led to
Cross broadcast route request message and carry out searching route.Destination node is by backtracking to one route replies information of source node come really
The availability of fixed route.When there is link disconnection, node will notify superior node using Route error message, each section
Point all retains a precursor list to help through error reporting.
After gateway 3 receives data, carry out further visualization display and process.
If not receiving data in the reception buffering area of gateway 3, communication protocol should be checked, fixed a breakdown, until connecing
Receiving in buffering area has data to produce, and data are analyzed and are processed in gateway system 3, shows the data letter of sensor
Cease to targeted customer.
Embodiment 2.
Such as Fig. 1, source sensing device 1 may include passive sensor 12 and sensor control circuit 11.
Sensor control circuit 11 is powered by external power source and is operated, and mainly includes power circuit 111, vibration
Device 112；Power amplifier 113；First data modulation circuitry 114；Detecting circuit 115；Antenna 116.During work, oscillator 112
The carrier signal of generation, by after the amplification of power amplifier 113, being launched by antenna 116, is that passive sensor 12 provides energy.
Needed for passive sensor 12 is obtained by between sensor control circuit 11 Non-contact electromagnetic coupling mode
Energy, by non-immediate power supply, realize passive.
Passive sensor 12 mainly includes energy management circuit 121；Energy storage circuit 122；Antenna transmission circuit 123；
Sensing circuit 124；Second data modulation circuitry 125.Second data modulation circuitry 125 includes appearance/frequency converter and frequency divider.
The carrier signal that oscillator 112 in sensor control circuit 11 is produced is by after the amplification of power amplifier 113, leading to
Cross antenna 116 to launch, the energy that the antenna transmission circuit 123 of passive sensor 12 is transmitted carrier signal passes through energy stores
Circuit 122 is stored, and after the energy of storage is met using threshold value, will drive 125 pairs of sensing letters of the second data modulation circuitry
Breath is acquired.Appearance/frequency converter in second data modulation circuitry 125, the physical signalling conversion that sensing circuit 124 is perceived
Into digital fre-quency signal；Using frequency divider, data frame is loaded into carrier wave by backscattered modulation.Sensor control circuit
11, using detecting circuit 115, the first data modulation circuitry 114, obtain final sensor information.
By peripheral interface circuit be transferred in data acquisition device 2 data of acquisition by sensor control circuit 11.Pass
The output format of sensor information is the mixing output of multi-parameter, and is one section of continuous square wave.Data output format be from
Synchronizing signal starts, and is then followed successively by temperature, humidity, pressure value information；The output signal of passive sensor determines that it is gathered
Mode is the signal acquisition based on timer counter principle；Counting according to synchronizing signal and sampling period and timer can be real
Existing sensor information temperature, humidity, the separation of pressure value information, the data by Signal separator that will be collected send again
Preceding treatment work, including data frame format, WSN agreements, then transmit data to the wireless transmission in data acquisition device 2
In buffering area.
In data acquisition is carried out, if gathered data does not enter into wireless transmission buffering area, data acquisition is lost
Lose, re-start data acquisition, until buffering area there are data to be sent to produce；Data to be sent are carried out to transmit treatment,
If condition indication circuit 202 does not flash, show that data do not send.Process sending failure, and to there is event
The data acquisition device 2 of barrier is reinitialized, until data is activation success.
In addition, as used in this application, term " module ", " system " refer to following every whole：
(1) the only circuit implementation (such as with the implementation method of only analog and/or digital circuit arrangement) of hardware；
(2) combination of circuit and software, such as：The combination of (i) control circuit or (ii) control circuitry/software (including number
Word signal control circuit), the part of software and memory, its cooperation is causing such as mobile phone or server etc
Equipment performs various functions；And
(3) the such as circuit of micro-control circuit or micro-control circuit part etc, it needs the software or solid for operating
Part, even if software or firmware are not presented physically.
The definition of " unit " or " device " suitable for it is all (be included in any claim) in the embodiment above it is right
The use of the term.As another example, term " module " can also cover only one control circuit or control circuit part with
And it attached software and/or firmware way of example.Term " device " can also cover such as adhesive integrated circuit, Cellular Networks
Based band integrated circuit or application control circuit integrated circuit in network equipment or other network equipments.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. passive sensing devices, it is characterised in that including：
Passive sensor, domestic environment index is sensed in the way of obtaining electric power from extraneous electromagnetic signals and digitlization ginseng is converted to
Number data；
Electromagnetism couples the sensor control circuit of the passive sensor, for the passive sensor launch above-mentioned electromagnetic signal with
And receive above-mentioned digitlization supplemental characteristic.
2. passive sensing devices according to claim 1, it is characterised in that passive sensor also includes：
Antenna transmission circuit, launches and receives electromagnetic signal for predeterminated frequency；
The second data modulation circuitry of the antenna transmission circuit is coupled, for receiving the electromagnetic signal from sensor control circuit
Or electromagnetic signal is sent to sensor control circuit, and set the predeterminated frequency；
The energy storage circuit of the antenna transmission circuit is coupled, for receiving energy that electromagnetic signal transmitted and being stored；
The energy management circuit of the energy storage circuit is coupled, the accumulation of energy is transmitted for detecting；And
For sensing domestic environment index and being converted to the sensing circuit for digitizing supplemental characteristic, the sensing circuit coupling is above-mentioned
The second modulation circuit and energy storage circuit, with the threshold value that the energy management circuit sets obtain drive electric power.
3. passive sensing devices according to claim 2, it is characterised in that second data modulation circuitry is included：
Appearance/frequency converter, the physical signalling for passive sensor to be perceived is converted into digital fre-quency signal；
The frequency divider of the appearance/frequency converter is coupled, for processing the digital fre-quency signal after conversion.
4. passive sensing devices according to any one of preceding claims, it is characterised in that the wireless sensing device is
Installation by adhering is in building sides.
5. passive sensing devices according to claim 1 and 2, it is characterised in that above-mentioned domestic environment index includes temperature
Degree, humidity, pressure value.
6. a kind of passive type wireless sensing system, including：
Several passive sensing devices as described in claim 1；
The data acquisition device of above-mentioned wireless sensing device is coupled, the digitlization parameter for receiving passive sensing devices transmission
Data；And
The gateway communicated with the data acquisition device, for the digitlization supplemental characteristic for receiving to be analyzed and visualized aobvious
Show.
7. a kind of passive type wireless sensing system according to claim 6, its spy is being, described sensor control electricity
Road includes：
Oscillator；For producing carrier signal；
Power amplifier；Carrier signal for oscillator to be produced is amplified；
Antenna；For the carrier signal of amplification to be launched by it；
Detecting circuit；Target modulation signal is recovered from the brewed higher-order of oscillation；
First data modulation circuitry；And
Power circuit.
8. a kind of passive type wireless sensing system according to claim 7, it is characterised in that described passive sensor with
Between sensor control circuit energy transmission is carried out by way of distributing electromagnetic coupled.
9. a kind of passive type wireless sensing system according to claim 6, it is characterised in that described passive type is wirelessly passed
Sensing system is based on MESH network, and described MESH network uses plan range vector route agreement.
10. a kind of passive type wireless sensing system according to claim 6, it is characterised in that data acquisition device can be wrapped
Include microprocessor, power circuit, condition indication circuit, RF transmit-receive circuit, storage medium.
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| CN201611134083.9A CN106683387A (en) | 2016-12-10 | 2016-12-10 | Passive sensing device and passive type wireless sensing system |
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Cited By (1)
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| WO2021142569A1 (en) * | 2020-01-13 | 2021-07-22 | 舍弗勒技术股份两合公司 | Sensing device and bearing component |
| CN114981551A (en) * | 2020-01-13 | 2022-08-30 | 舍弗勒技术股份两合公司 | Sensing device and bearing assembly |
| CN114981551B (en) * | 2020-01-13 | 2024-01-30 | 舍弗勒技术股份两合公司 | Sensing device and bearing assembly |
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