CN104158598B - A kind of passive and wireless on-off state transmission method and device - Google Patents
A kind of passive and wireless on-off state transmission method and device Download PDFInfo
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- CN104158598B CN104158598B CN201410412330.1A CN201410412330A CN104158598B CN 104158598 B CN104158598 B CN 104158598B CN 201410412330 A CN201410412330 A CN 201410412330A CN 104158598 B CN104158598 B CN 104158598B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention relates to wireless information transfer field, particularly relate to on-off state transmission method and the device of a kind of passive and wireless, sound wave dispensing device uses sequential coding technology switch amount passage and status information to encode, by air bag to the acoustic signals broadcasting representation switch amount state in the air；Sound sensing device receives after acoustic signals, enters DSP module and is decoded process, obtain the binary code of particular form after acoustic signals filter and is AD converted, and is shown by display module or sends host computer to by the communication technology and processes.Present invention achieves single switching value passage and the transmission of multi-switch channel status wireless and passive, be conducive in difficult wiring, the industrial occasions manually cannot monitored is implemented, the loss of data that can cause from otherwise electromagnetic interference and electric discontinuity of cable in disconnecting switch amount signals transmission, simultaneously because transmitting terminal is passive power supply, it is possible to realize energy-conserving and environment-protective.
Description
Technical field
The present invention relates to wireless information transfer field, the on-off state particularly relating to a kind of passive and wireless passes
Transmission method and device.
Background technology
In industry spot, it is often necessary to gather on-off state, and pass it to man-machine interface, in order to
Staff can be the most real-time obtain the important informations such as equipment operation, ambient parameter, security alarm, this
Accuracy and real-time to data propose the highest requirement.At present, industry spot is all by communication electricity
Cable or radio signal switch amount state transmit.But owing to industry spot situation is complicated, part
There is difficult wiring in place, situation about manually cannot monitor, and industry spot communication protocol is complicated, utilizes
During cable transmission, various wired and communication mode is prone to mutual crosstalk, and data are easy to be subject in transmitting procedure
To interference in various degree；And many operation equipment can cause the most disconnected of cable with cable when running simultaneously
Core, affects the transmission of signal.And when utilizing radio output signal, can produce again in signal communication process with
The increase of distance and situation about decaying, be unfavorable for the Long Distant Transmit of signal.Meanwhile, industry spot needs
On-off model enormous amount, if the transmission of each on-off model configures power supply with receiving, easily causes
Unnecessary energy waste.
For drawbacks described above, find a kind of wireless switching amount state transfer, the method that simultaneously can save again the energy
Imperative.The present invention can be complicated for this kind of working environment in well, in tower, and difficult wiring manually cannot
Entering the industry spot of exploration, the transmission to signals such as its internal switch amount signal, alarm signals is favourable.
Summary of the invention
It is an object of the invention to, it is provided that a kind of on-off state passive and wireless transmission method and device, be used for
Solve problem present in existing on-off state transmission process, improve the reliability of switching value transmission with accurate
Property.
For achieving the above object, the present invention proposes a kind of wireless passive switch amount state transfer device, comprises
Switching value sound wave dispensing device, switching value acoustic receiver device；
Described switching value sound wave dispensing device includes connecting rod, two flexible members, two pistons, two gas
Capsule, two blow guns and two groups of reeds；Two flexible members that length is different are parallelly mounted to connecting rod respectively
Two ends；Two pistons are connected with two flexible member other ends respectively；Two air bags lay respectively at flexible member
Within the scope of piston under Zuo Yong can arrive；Two blow guns are positioned at two air bag gas outlets accordingly, and two
Group reed is positioned at blow gun accordingly；Piston connecting rod and flexible member drive next first after one towards
Or deviate from air pocket motion so that and air bag compression or expansion, the air-flow in air bag is blown out by suction nozzle or sucks,
The vibration of air-flow band movable contact spring sends one group of acoustic signals；
Acoustic sensor that switching value acoustic receiver device includes being sequentially connected, wave filter, a/d converter, DSP
And microprocessor.
One group of reed comprises an air-breathing sounding reed and an air blowing sounding reed, air-breathing sounding reed and blowing
The vibration frequency of gas sounding reed is identical；Specifications parameter difference between two groups of reeds causes vibration frequency value not
Identical.
The specifications parameter of described reed includes reed material, reed shape, reed thickness, length of spring leaf, spring
Sheet fixes the distance between end and inflection point.
It is placed around, at reed, the acoustic resonator that intrinsic frequency is identical with reed frequency, makes sound by resonance
Strengthen amplifying.
DSP or microprocessor module or host computer connect alarm device, pre-set alert consitions, work as switch
When amount state meets alert consitions, alarm device sends alarm signal；Described alert consitions is single switch amount
Particular state, the variable condition of single switch amount, the combined state of multiple switching values, or set time section
The single or multiple variable condition of interior switching value.
Wireless passive switch amount state transfer device is applied to the industry spot of complex environment, opens in needs monitoring
Sound wave dispensing device is laid in the position of pass amount signal and alarm signal, and installs sound wave at well head or tower bottom
Receiving device, sound wave dispensing device constantly transmits the sound wave with switching value information or alarm signal, by well
Acoustic receiver device at the bottom of mouth or tower receives acoustic signals, is decoded it and on-off state information is passed
Give host computer, thus in realizing well or on-off model and the transmission of alarm signal in tower.
In wireless passive switch amount state transfer device is applied to calculate classroom, seat uses number, to judge to come
People's quantity；Being placed on by sound wave dispensing device in classroom under the seat of seat, seat uses and does not uses this
Two states correspond to two states of switching value, by acoustic receiver device and the process of host computer, it is achieved
Classroom demographics.
A kind of wireless passive switch amount state transfer method, including the code sending method of sound wave transmitting terminal, and
The reception coding/decoding method of acoustic receiver end；
The code sending method of described sound wave transmitting terminal, comprises the following steps:
Step 101, determines the number of channels x of the switching value needing sign, and wherein, x is natural number and x >=1；
Step 102, according to the number of channels of switching value, sets up high-frequency signal group and low frequency signal group；High frequency is believed
Number group is consistent with reed vibration sounding frequency with signal frequency value in low frequency signal group；
Step 103, determines high-frequency signal group's medium-high frequency sine wave signal quantity m according to number of channels x, and low
Frequently ensemble medium and low frequency sine wave signal quantity n；The value of m and n meets m × n ＞ x and (m-1) × n ＜ x
And m × (n-1) ＜ x；Wherein, m, n are natural number and m >=1, n >=1；
Step 104, the switching value for different passages distributes a class frequency, and a described class frequency comprises two frequencies
Signal, selected from high-frequency signal group and/or low frequency signal group；Distributed described one group of the switching value of different passages
Frequency is different；
Step 105, owing to flexible member length is different, causes it to drive piston to act on the sequencing of air bag
Different so that the compression after air bag one first one or expansion, the piston first acting on air bag first fails, after
Fail after acting on the piston of air bag；Air-flow in air bag is blown out by suction nozzle or sucks, and air-flow drives
The acoustic signals sending said two frequency after reed vibration one first；
Step 106, the transmission of two frequency sound waves signals does not starts simultaneously at and asynchronously stops, necessarily causing one
Individual transmission cycle is divided into three phases, and two frequency sound waves signals occupy in a signal transmission cycle respectively
Continuously but two sections differed；
Step 107, characterizes on-off state with the different transmission sequences of in signal transmission cycle two frequency signals
" 0 " and " 1 " of information；Switching value channel information is characterized with the frequency values of two frequency signals；
The described reception coding/decoding method with sound wave receiving terminal, comprises the following steps:
Step 201, in the high-frequency signal group selected in frequency used by matching and decoding, with coding and low frequency signal group
Frequency identical；
Step 202, described acoustic sensor receives the encoded acoustic signals transmitted in air, is translated into
The signal of telecommunication, the acoustic signals of the CF in acoustic signals is filtered out, passes through AD conversion by wave filter
DSP process is sent to after device,
Step 203, relative to the three phases of signal transmission cycle, DSP module input signal is translated into three groups,
The often binary code of group m+n+2 position form；Often continuous print m position and m high frequency sinusoidal in group binary code
Ripple signal one_to_one corresponding, continuous print n position and n low frequency sine wave signal one_to_one corresponding, remaining two difference
For high frequency flag position and low frequency signpost position, wherein, m, n are natural number and m >=1, n >=1；
Step 204, when not receiving signal, will often organize whole figure place resets of the binary code of m+n+2 position
Or set；
Step 205, when in step 204 by whole figure place reset of binary code: resolve each stage
Signal, analyze in signal the frequency information comprised, when detecting that described frequency information only comprises a high frequency
During component, by the correspondence position " 1 " in the m position of this high fdrequency component, and by high frequency flag place value " 1 "；When
Detect when described frequency information only comprises a low frequency component, by the corresponding position in the n position of this low frequency component
Set, and by low frequency signpost place value " 1 "；When detect described frequency information comprise a high fdrequency component and
During one low frequency component, right by the n position of the corresponding position in the m position of this high fdrequency component and this low frequency component
Answer position set, and by high frequency flag position and the set of low frequency signpost position；
When in step 204 by whole figure place set of binary code, its resolving with by binary code
Whole figure place resets, simply by position reset corresponding for frequency component；
Step 206, three groups of binary codes of Integrated comparative, according to the high frequency flag position in three groups of binary codes and low
Frequently the information of flag bit, it is judged that high_frequency sine wave signal and the transmission sequence of low frequency sine wave signal, and then
" 0 " and " 1 " to its different transmission sequence characterized on-off state information；
Step 207, it is judged that the high fdrequency component in three groups of binary codes and the frequency values of low frequency component, it is judged that this
The switching value channel information that class frequency value is characterized.
Signal frequency value in described high-frequency signal group and low frequency signal group, according to the actual sounding of selected reed
Frequency values determines；Or according to signal frequency value preassigned in high-frequency signal group and low frequency signal group, adjust
Whole reed parameter, and then adjust its audible frequency.
Switching value channel information and status information are shown by display module or are sent to by the communication technology upper
Machine processes；The binary code of described often group m+n+2 position form is stored, shows or carries by host computer
Awake alarm.
The invention has the beneficial effects as follows that, beneficially in difficult wiring, the industrial occasions manually cannot monitored is implemented,
The number that can cause from otherwise electromagnetic interference and electric discontinuity of cable in disconnecting switch amount signals transmission
According to loss, simultaneously because transmitting terminal is passive power supply, it is possible to realize energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is sounding module operation principle schematic diagram；
Fig. 2 is that one-way switch amount state passive and wireless transmits system construction drawing；
Fig. 3 is that multi-way switching values state passive and wireless transmits system construction drawing；
Fig. 4 be on-off state be " 1 " encode schematic diagram；
Fig. 5 be on-off state be " 0 " encode schematic diagram；
Fig. 6 is acoustic receiver decoding process figure.
Label in figure: 1-adjustable piston device, 2-connecting rod, 3-composite air bag, 4-blow gun, 5-reed.
Detailed description of the invention
The present invention proposes a kind of wireless passive switch amount state transfer method and device.Below in conjunction with the accompanying drawings and
This invention is described in further details by specific embodiments.
As shown in Figure 1, for sound-producing device operation principle schematic diagram.
Sound-producing device shown in Fig. 1 includes adjustable piston device 1, connecting rod 2, two air bags 3, and two are blown
Mouth 4, two groups of reeds 5.Often group reed include an air blowing sounding reed and one be air-breathing sounding reed.Can
Adjust piston apparatus 1 to comprise two pistons, pass through the different spring of two root length degree or expansion link respectively and be connected
Bar 2 connects so that two piston-initial-position differences；Each air bag 3 comprises 1 blow gun 4, reed 5
It is positioned at the gas outlet of blow gun 4.Can place near reed 5 and intrinsic frequency and reed 5 vibration frequency
Identical acoustic resonator, makes sound strengthen amplifying by resonance.
When on-off state changes, drive connecting rod 2 to apply pressure to piston 1, force piston 1
Gas in compression bladder 3, the gas in air bag 3 is blown out by blow gun 4, makes the spring in blow gun 4 exit
Sheet 5 vibrates, and sends the audio signal of certain frequency.Give vent to anger the size of bore and reed 5 by changing blow gun 4
Specification produce the acoustic signals of different frequency.Due to two piston-initial-position differences, it is oppressed or releases
The time order and function of venting capsule 3 sounding is the most different.
Assuming that right hand piston 1 is short with air bag 3 spacing, left hand piston 1 is long with air bag 3 spacing, and right
Reed 5 vibration of side air bag 3 sends high-frequency signal, and reed 5 vibration of left side air bag 3 sends low frequency signal.
When connecting rod 2 drives piston 1 to move towards the direction of air bag 3, and first right hand piston 1 contacts and press
Compeling right side air bag 3, the most whole sound-producing device only sends high-frequency signal；When connecting rod 2 continues towards air bag 3
Motion, right side reed 5 continues sounding, and left hand piston 1 comes into contact with and oppress left side air bag 3 simultaneously, now
Whole sound-producing device sends the composite signal of high and low frequency；When connecting rod 2 continues to move towards air bag 3,
Air in right side air bag 3 is discharged by right hand piston 1 substantially, and the sounding of right side reed 5 stops, and left side
Piston 1 continues air bag 3 on the left of compressing, and on the left of maintenance, reed 5 continues sounding, and the most whole sound-producing device is only sent out
Go out low frequency signal.When piston stop motion or left side bladder air are discharged substantially, whole device stops sounding.
When connecting rod 2 drives piston 1 to move towards the direction away from air bag 3, and left hand piston 1 first propagates away from a left side
Side air bag 3, air bag 3 air-breathing expands and causes left side reed 5 to vibrate, and the most whole sound-producing device only sends
Low frequency signal；When connecting rod 2 continues to move away from air bag 3, and left side reed 5 continuously sends out low-frequency sound wave,
Right hand piston 1 starts away from right side air bag 3 simultaneously, and right side air bag air-breathing expands and causes right side reed 5 to send height
Frequently sound wave, the most whole sound-producing device sends the composite signal of low frequency and high frequency；When connecting rod 2 continue away from
Air bag 3 moves, left side air bag restore to the original state, left hand piston 1 no longer contact on the left of air bag, left side reed 5
Stopping sounding, and right side air bag continues air-breathing and expands, right side reed 5 continues to send high frequency sound wave, the most whole
Individual sound-producing device only sends high-frequency signal.When right hand piston no longer contacts right side air bag or piston stop motion,
Whole device stops sounding.
Whole sound-producing device can be with horizontal positioned, it is also possible to vertically place.In a compressing or the mistake of release
Cheng Zhong, its length longer in two springs at least needs to ensure can be by its corresponding air bag in compression process
In gas substantially discharge；Its length air bag to be ensured air-breathing expansion process shorter in two springs
In its corresponding air bag air-breathing can be made to uncompressed state.
As shown in Figure 2, for one-way switch amount wireless and passive transmission structure figure.
One-way switch amount state is only " 0 ", " 1 " two states, it is not necessary to adopt its channel number information
Collection.Therefore, signal sound-producing device represents according to on-off state, the different transmissions order setting height frequency
State " 0 " and state " 1 ", send the compound acoustic signals of different sequencing, and compound sound wave is in atmosphere
Propagate, sound sensing device receive acoustic signals group, and this signal group transmission is entered in decoding signals, root
According to the difference of one group of height frequency transmission order, it is interpreted, and sends interpretation result to microprocessor,
Analyze and extract the status information of current switch amount, be finally transferred to communicator and this way switch amount state is passed
It is defeated by host computer.
Host computer receives on-off state, and passage and the status information of switch amount store, and use figure
The mode display switch amount information of shape or text, can use 3D Display Technique, and on host computer, simulation is each
The true geographical position relationship of switching value, switching value information can show on this 3D rendering, make people
The state of each switching value under simulated scenario can be seen intuitively in host computer, be similar to the work of monitoring camera
With；Meanwhile, host computer can make switching value information transmit by the network communications technology, makes monitoring behavior
Do not retrained by time, position.
Microprocessor and host computer can configure alarm device, for extremely critical on-off state or want
The on-off state of special concern, arranges alert consitions, when the state of these switching values meets alert consitions,
Alarm device sends signal set in advance；These signals can be alert song, the tinkle of bells, the language prerecorded
Sound or the note remotely sent by gsm module.Alert consitions includes the channel information of switching value and opens
Pass information, it is also possible to include temporal information, as arranged regular time section, if switching value in this time period
State changes, is varied multiple times or becomes a certain particular state, can alarm signal；The most all right
Including the combined state condition of multiple switching values, as specified, the state that certain A switchs is 0, and certain B switch
State is 1, and when the state of certain C is 1, sends a warning just now.
As shown in Figure 3, for multi-way switching values wireless and passive transmission structure figure.
Multi-way switching values information not only comprises its status information, also switching value channel number information, thus first
First to choose the combination of one group of height frequency according to the channel number of switching value, form one group of height frequency multiplexed
Signal, the corresponding different height combination of frequency of different switching value channel number, height frequency letter in composite signal
Number " 0 " or the one state information of order representation switch amount.Air bag sends compound acoustic signals, compound
Sound wave is propagated in atmosphere, sound sensing device receive acoustic signals group, and this signal group transmission is entered signal
In decoder, according to the difference of one group of height frequency transmission order, it is interpreted, and interpretation result is passed
Giving microprocessor, analyze and extract the status information of current switch amount, being finally transferred to communicator should
Way switch amount state transfer is to host computer.As shown in Figure 4, for on-off state be " 1 " encode schematic diagram；
As shown in Figure 5, for on-off state be " 0 " encode schematic diagram.
Setting an acoustic signals cycle as T, its transmission cycle is divided into 3 parts, respectively mark in figure
Part 1, part 2 and part 3.Each acoustic signals cycle must comprise this 3 parts, but this
The time span of 3 parts can be identical, it is possible to differs.
In low frequency signal in compound acoustic signals and a high-frequency signal signal transmission cycle respectively continuously but not
Two sections identical (being 1-2 section and 2-3 section respectively).Order after regulation low frequency elder generation high frequency represents state " 0 ",
The order that after low frequency, high frequency is first represents state " 1 "；Vice versa.In order to better illustrate the present invention, in reality
Executing the order after selecting low frequency elder generation high frequency in mode and represent state " 1 ", the order that after low frequency, high frequency is first represents shape
The mode of state " 0 ".
When on-off state is " 1 ", as shown in Figure 4, in part 1, by high frequency composite air bag first
Sending high frequency sound wave, low frequency composite air bag does not send sound wave；In part 2, high frequency composite air bag continues to send out
Sending high frequency sound wave, low frequency composite air bag also sends low-frequency sound wave simultaneously；In part 3, high frequency composite air bag
Not sending sound wave, low frequency composite air bag continues to send low-frequency sound wave.
When on-off state is " 0 ", as shown in Figure 5, in part 1, by low frequency composite air bag first
Sending low-frequency sound wave, high frequency composite air bag does not send sound wave；In part 2, low frequency composite air bag continues to send out
Send low-frequency sound wave, be combined sound wave air bag simultaneously and also send high frequency sound wave；In part 3, low frequency composite air bag
Not sending sound wave, high frequency composite air bag continues to send high frequency sound wave.
Shown in accompanying drawing 6, for acoustic receiver decoding process figure, it is decoded as with 16 way switch amount state acoustic receiver
Example.
First center, at acoustic receiver dress, the frequency information chosen by sound-producing device in high frequency group and low frequency group.
Configuration can leach the wave filter of selected frequencies signal, wave filter quantity and the frequency signal chosen in circuit
Quantity is identical.Compound acoustic signals is converted into the signal of telecommunication by acoustic sensor and is transferred to wave filter, and wave filter will
The acoustic signals of the CF in acoustic signals group filters out, it is to avoid hum disturbs, and filters gained signal
Be converted to data signal by a/d converter and send DSP process to, be translated into the binary system of 10
Code, owing to acoustic signals component is three parts, accordingly, this signal group is also translated into three groups 10 by processor
Binary code, according to the sequencing of three groups of binary codes, it is judged that the state that switching value is current.
The process that signal is decoded by DSP is: specify in each group of 10 binary codes, high 5 representatives
High-frequency signal group, low 5 represent low frequency signal group；Each table wherein in high 5, in first 4
Show a high-frequency signal, when receiving the high-frequency signal representing this frequency value, by this position 1 in DSP, its
Remaining position 0；5th is high-frequency signal flag bit, indicates whether to have received high-frequency signal, if having received
The frequency signal that in first four, arbitrary frequency value is corresponding, then by this position 1 in DSP, otherwise then set to 0.Low by 5
Position with high 5 similar.According to front 4 passage letters judging switching value of first four and low 5 of high 5
Breath, by the flag bit of high 5 in three groups of decoded informations and the flag bit of low 5, it is judged that acoustic signals group
Transmission sequence, thus may determine that the status information of switching value.If the 1st group of code medium-high frequency flag bit is 1,
In first four, the 1st is 1, low frequency signpost position 0；2nd group of code medium-high frequency flag bit and low frequency signpost are for being
1, in front 4 and 6-9 position, the 1st and the 7th is 1；3rd group of code medium-high frequency flag bit is 0, low frequency marking
Will position is 1, and the 7th is 1；Then can judge clearly, high-frequency signal first transmits, and sends this sound wave
Switching value be the 1st the frequency value switching value that characterized corresponding with the 7th.According to described in specification
Circuit unit is constituted, signal flows to and DSP decodes process, can implement this decoding circuit.
Audio signal can be changed into device or the device of the signal of telecommunication by acoustic sensor, including but not limited to resistance
Changing type sound sensing device, piezoelectric acoustic device, condenser type sound sensing device or moving-coil microphone.
In present invention could apply to well, Ta Nei and the industry spot of similar complex environment, in well or
Sound wave dispensing device is laid in the position needing pilot switch amount signal and alarm signal in tower, and at well head or
Tower bottom install acoustic receiver device, sound wave dispensing device constantly transmit the sound wave with switching value information or
Alarm signal, is received acoustic signals by the acoustic receiver device at the bottom of well head or tower, is decoded it and will open
Pass amount status information sends host computer to, thus on-off model and the biography of alarm signal in realizing well or in tower
Defeated.
In it is also possible to apply the invention to calculate classroom, seat uses number, to judge messenger's quantity.At present, religion
The seat of indoor use is for can automatically rebound formula seat, therefore, the present invention can be placed on seat in classroom
Under seat, when the seat is in use, arranging on-off state is 1, is then 0 when not using.Religion can be solved
The problem of indoor statistical number of person inconvenience, helps teacher to determine the quantity of class student.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art, can be easily in the technical scope that the invention discloses
The change expected or replacement, all should contain within protection scope of the present invention.Therefore, the protection of the present invention
Scope should be as the criterion with scope of the claims.
Claims (10)
1. a wireless passive switch amount state transfer device, comprises switching value sound wave dispensing device, switching value
Acoustic receiver device, it is characterised in that
Described switching value sound wave dispensing device includes connecting rod, two flexible members, two pistons, two gas
Capsule, two blow guns and two groups of reeds；Two flexible members that length is different are parallelly mounted to connecting rod respectively
Two ends；Two pistons are connected with two flexible member other ends respectively；Two air bags lay respectively at flexible member
Within the scope of piston under Zuo Yong can arrive；Two blow guns are positioned at two air bag gas outlets accordingly, and two
Group reed is positioned at blow gun accordingly；Piston connecting rod and flexible member drive next first after one towards
Or deviating from composite air bag motion so that air bag compression or expansion, the air-flow in air bag is blown out by suction nozzle or inhales
Entering, the vibration of air-flow band movable contact spring sends one group of acoustic signals；
Acoustic sensor that described switching value acoustic receiver device includes being sequentially connected, wave filter, a/d converter,
DSP and microprocessor.
Wireless passive switch amount state transfer device the most according to claim 1, it is characterised in that one
Group reed comprises an air-breathing sounding reed and an air blowing sounding reed, air-breathing sounding reed and air blowing sounding
The vibration frequency of reed is identical；Specifications parameter difference between two groups of reeds causes vibration frequency value to differ.
Wireless passive switch amount state transfer device the most according to claim 2, it is characterised in that institute
The specifications parameter stating reed includes reed material, reed shape, reed thickness, length of spring leaf, and reed is fixed
Distance between end and inflection point.
4., according to the arbitrary described wireless passive switch amount state transfer device of claim 1-3, its feature exists
In, it is placed around, at reed, the acoustic resonator that intrinsic frequency is identical with reed frequency, makes sound by resonance
Strengthen amplifying.
5., according to the arbitrary described wireless passive switch amount state transfer device of claim 1-3, its feature exists
In, DSP or microprocessor module or host computer connect alarm device, pre-set alert consitions, work as switch
When amount state meets alert consitions, alarm device sends alarm signal；Described alert consitions is single switch amount
Particular state, the variable condition of single switch amount, the combined state of multiple switching values, or set time section
The single or multiple variable condition of interior switching value.
6., according to the arbitrary described wireless passive switch amount state transfer device of claim 1-3, its feature exists
In, it is applied to the industry spot of complex environment, needs pilot switch amount signal and the position of alarm signal
Laying sound wave dispensing device, and install acoustic receiver device at well head or tower bottom, sound wave dispensing device is continuous
Transmit the sound wave with switching value information or alarm signal, the acoustic receiver device at the bottom of well head or tower receive
Acoustic signals, is decoded and on-off state information is sent to host computer to it, thus in realizing well or
On-off model and the transmission of alarm signal in tower.
7., according to the arbitrary described wireless passive switch amount state transfer device of claim 1-3, its feature exists
In, in being applied to calculate classroom, seat uses number, to judge messenger's quantity；Sound wave dispensing device is placed
In classroom under the seat of seat, seat uses and does not uses the two state corresponding to two of switching value
State, by acoustic receiver device and the process of host computer, it is achieved classroom demographics.
8. a wireless passive switch amount state transfer method based on device described in claim 2, its feature
It is, including the code sending method of sound wave transmitting terminal, and the reception coding/decoding method of sound wave receiving terminal；
The code sending method of described sound wave transmitting terminal, comprises the following steps:
Step 101, determines the number of channels x of the switching value needing sign, and wherein, x is natural number and x >=1；
Step 102, according to the number of channels of switching value, sets up high-frequency signal group and low frequency signal group；High frequency is believed
Number group is consistent with reed vibration sounding frequency with signal frequency value in low frequency signal group；
Step 103, determines high-frequency signal group's medium-high frequency sine wave signal quantity m according to number of channels x, and low
Frequently ensemble medium and low frequency sine wave signal quantity n；The value of m and n meets m × n ＞ x and (m-1) × n ＜ x
And m × (n-1) ＜ x；Wherein, m, n are natural number and m >=1, n >=1；
Step 104, the switching value for different passages distributes a class frequency, and a described class frequency comprises two frequencies
Signal, selected from high-frequency signal group and/or low frequency signal group；Distributed described one group of the switching value of different passages
Frequency is different；
Step 105, owing to flexible member length is different, causes it to drive piston to act on the sequencing of air bag
Different so that the compression after air bag one first one or expansion, the piston first acting on air bag first fails, after
Fail after acting on the piston of air bag；Air-flow in air bag is blown out by suction nozzle or sucks, and air-flow drives
The acoustic signals sending said two frequency after reed vibration one first；
Step 106, the transmission of two frequency sound waves signals does not starts simultaneously at and asynchronously stops, necessarily causing one
Individual transmission cycle is divided into three phases, and two frequency sound waves signals occupy in a signal transmission cycle respectively
Continuously but two sections differed；
Step 107, characterizes on-off state with the different transmission sequences of in signal transmission cycle two frequency signals
" 0 " and " 1 " of information；Switching value channel information is characterized with the frequency values of two frequency signals；
The reception coding/decoding method of described acoustic receiver end, comprises the following steps:
Step 201, in the high-frequency signal group selected in frequency used by matching and decoding, with coding and low frequency signal group
Frequency identical；
Step 202, described acoustic sensor receives the encoded acoustic signals transmitted in air, is translated into
The signal of telecommunication, the acoustic signals of the CF in acoustic signals is filtered out, passes through AD conversion by wave filter
DSP process is sent to after device,
Step 203, relative to the three phases of signal transmission cycle, DSP module input signal is translated into three groups,
The often binary code of group m+n+2 position form；Often continuous print m position and m high frequency sinusoidal in group binary code
Ripple signal one_to_one corresponding, continuous print n position and n low frequency sine wave signal one_to_one corresponding, remaining two difference
For high frequency flag position and low frequency signpost position, wherein, m, n are natural number and m >=1, n >=1；
Step 204, when not receiving signal, will often organize whole figure place resets of the binary code of m+n+2 position
Or set；
Step 205, when in step 204 by whole figure place reset of binary code: resolve each stage
Signal, analyze in signal the frequency information comprised, when detecting that described frequency information only comprises a high frequency
During component, by the correspondence position " 1 " in the m position of this high fdrequency component, and by high frequency flag place value " 1 "；When
Detect when described frequency information only comprises a low frequency component, by the corresponding position in the n position of this low frequency component
Set, and by low frequency signpost place value " 1 "；When detect described frequency information comprise a high fdrequency component and
During one low frequency component, right by the n position of the corresponding position in the m position of this high fdrequency component and this low frequency component
Answer position set, and by high frequency flag position and the set of low frequency signpost position；
When in step 204 by whole figure place set of binary code, its resolving with by binary code
Whole figure place resets, simply by position reset corresponding for frequency component；
Step 206, three groups of binary codes of Integrated comparative, according to the high frequency flag position in three groups of binary codes and low
Frequently the information of flag bit, it is judged that high_frequency sine wave signal and the transmission sequence of low frequency sine wave signal, and then
" 0 " and " 1 " to its different transmission sequence characterized on-off state information；
Step 207, it is judged that the high fdrequency component in three groups of binary codes and the frequency values of low frequency component, it is judged that this
The switching value channel information that class frequency value is characterized.
Wireless passive switch amount state transfer method the most according to claim 8, it is characterised in that institute
State the signal frequency value in high-frequency signal group and low frequency signal group, according to the actual audible frequency value of selected reed
Determine；Or according to signal frequency value preassigned in high-frequency signal group and low frequency signal group, adjust reed
Parameter, and then adjust its audible frequency.
Wireless passive switch amount state transfer method the most according to claim 8, it is characterised in that
Switching value channel information and status information show by display module or send host computer to by the communication technology
Row processes；The binary code of described often group m+n+2 position form is stored, shows or reminds alert by host computer
Report.
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| CN109859451B (en) * | 2016-07-18 | 2020-04-07 | 宁波公牛电器有限公司 | Code matching method and system based on passive wireless switch |
| CN115050167B (en) * | 2022-08-17 | 2022-11-25 | 广州市保伦电子有限公司 | Alarm system based on sound wave identification |
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