CN105933069B - OOK pulse signals emitter, method and communicator - Google Patents
OOK pulse signals emitter, method and communicator Download PDFInfo
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- CN105933069B CN105933069B CN201610532884.4A CN201610532884A CN105933069B CN 105933069 B CN105933069 B CN 105933069B CN 201610532884 A CN201610532884 A CN 201610532884A CN 105933069 B CN105933069 B CN 105933069B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/524—Pulse modulation
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
Abstract
The present invention relates to a kind of sender unit and communicator, wherein, sender unit includes modulation circuit, pulse generating circuit and the adjustable power driving circuit of output impedance；The electrical level judging input of the input of the modulation circuit and the pulse generating circuit connects the output end of signal generation apparatus respectively, the output end of the modulation circuit connects the signal input part of the pulse generating circuit, the output end of the pulse generating circuit connects the input of the power driving circuit, the output end connection signal receiving device of the power driving circuit.Above-mentioned sender unit and communicator are operated in digital trigger-type state, have the advantages that low-power consumption, low complex degree in realization, so that the per bit energy consumption of system is significantly reduced.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of OOK pulse signals emitter, method and communication dress
Put.
Background technology
In existing communication system, emitter generally uses the FSK (Frequency-shift of non-pulse formula
Keying, frequency shift keying), the signal modulation side such as BPSK (Binary Phase Shift Keying, binary phase shift keying)
Formula.The mode circuit structure such as FSK, BPSK is relative complex, is unfavorable for the fully integrated design of whole system, and power consumption is larger, above-mentioned
Defect limits application of the modes such as FSK, BPSK in actual scene.
By taking the body area network application environment such as human body communication as an example, human body medium's communication technology is generally that one kind makees human body
The Novel Communication mode carried out data transmission for cable, by the technology, human body only needs to the part as network, people
It just can enter the transmitting-receiving of row information by touching.Under body area network application environment, to the volume of Wearable particularly implanted equipment
There is a strict limitation with power consumption, these defect great limitations of communication mode such as FSK, BPSK human body medium's communication system
Practicality and commercialization.
In summary, prior art power consumption is big, complicated.
The content of the invention
Based on this, it is necessary to for prior art power consumption it is big, it is complicated the problem of there is provided a kind of sender unit,
Method and communicator.
A kind of sender unit, including：
Modulation circuit, pulse generating circuit and the adjustable power driving circuit of output impedance；
The electrical level judging input of the input of the modulation circuit and the pulse generating circuit connects signal hair respectively
The output end of generating apparatus, the output end of the modulation circuit connects the signal input part of the pulse generating circuit, the pulse
The output end for occurring circuit connects the input of the power driving circuit, the output end connection signal of the power driving circuit
Reception device；
The modulation circuit receives the NRZ data that signal generation apparatus is produced, and the NRZ data are adjusted with numeral
Carrier wave processed carries out on-off keying, obtains modulated signal, and the modulated signal is exported to pulse generating circuit；
The pulse generating circuit receives the modulated signal, and when the rising edge of the NRZ data arrives,
The corresponding modulated signal of first carrier cycle of the digitally modulated carrier after rising edge arrives is intercepted, digit pulse letter is obtained
Number, and the digital pulse signal is exported to power driving circuit；
The power of the digital pulse signal is adjusted to predetermined power value by the power driving circuit, and by the numeral
Pulse signal is transmitted into the signal receiving device.
A kind of signal transmitting method, comprises the following steps：
NRZ data are received, the NRZ data and digitally modulated carrier are subjected to on-off keying, modulation letter is obtained
Number；
The modulated signal is received, and when the rising edge of the NRZ data arrives, after interception rising edge arrives
The corresponding modulated signal of first carrier cycle of the digitally modulated carrier, obtains digital pulse signal；
The power of the digital pulse signal is adjusted to predetermined power value, and launches the digital pulse signal.
A kind of communicator, it is characterised in that including：
Sender unit, first sensor, second sensor, and signal receiving device；
The output end of the power driving circuit of the sender unit is connected with the input of the first sensor,
The output end of the first sensor is connected by transmission channel with the input of the second sensor, second sensing
The output end of device is connected with the signal receiving device.
Base band NRZ data are switched by above-mentioned sender unit, method and communicator by modulation circuit
Keying, obtains modulated signal, and the modulated signal is intercepted by pulse generating circuit, digital pulse signal is obtained, and leads to
The power of the digital pulse signal is adjusted to launch after predetermined power value by overpower drive circuit, and system is operated in digital
Trigger-type state, has the advantages that low-power consumption, low complex degree in realization, so that the per bit energy consumption of system significantly drops
It is low.
Brief description of the drawings
Fig. 1 is the structural representation of the sender unit of one embodiment；
Fig. 2 is the comparison figure for the modulated signal changed and changed without NRZ through NRZ；
Fig. 3 is the structural representation of the pulse generating circuit of one embodiment；
Fig. 4 is the workflow diagram of the pulse generating circuit of one embodiment；
The timing diagram that Fig. 5 produces for modulation and digit pulse；
Fig. 6 is the structural representation of the power driving circuit of one embodiment；
Fig. 7 is the structural representation of the push-pull power amplifier circuit of one embodiment；
Fig. 8 is the flow chart of the signal transmitting method of one embodiment；
Fig. 9 is the structural representation of the communicator of one embodiment.
Embodiment
Sender unit and the embodiment of communicator below in conjunction with the accompanying drawings to the present invention is illustrated.
Fig. 1 is the structural representation of the sender unit of one embodiment.As shown in figure 1, the sender unit
It may include：
Modulation circuit 10, pulse generating circuit 20 and the adjustable power driving circuit 30 of output impedance；
The input of the modulation circuit 10 and the electrical level judging input of the pulse generating circuit 20 connect letter respectively
The output end of number generating means 40, the output end of the modulation circuit 10 connects the signal input of the pulse generating circuit 20
End, the output end of the pulse generating circuit 20 connects the input of the power driving circuit 30, the power driving circuit
30 output end connection signal receiving device 300；
The modulation circuit 10 receives the NRZ data D2 that signal generation apparatus 40 is produced, by the NRZ data D2
On-off keying is carried out with digitally modulated carrier FD, modulated signal D3 is obtained, and the modulated signal D3 is exported to pulse generation
Circuit 20；
The pulse generating circuit 20 receives the modulated signal D3, and is arrived in the rising edge of the NRZ data D2
When coming, the output signal D3 of the modulation circuit 10 first carrier cycle, obtains digit pulse after interception rising edge arrives
Signal D4, and the digital pulse signal D4 is exported to power driving circuit 30；
The power of the digital pulse signal D4 is adjusted to predetermined power value by the power driving circuit 30, and will be described
Digital pulse signal D4 is transmitted into the signal receiving device 300.
The modulation circuit 10 can receive the NRZ data D2 of the generation of signal generation apparatus 40.In one embodiment,
The data that the signal generation apparatus 40 is produced are probably nonreturn to zero code data D1, now, can be in the signal generation apparatus 40
One NRZ generation circuit 60, the non-return-to-zero yardage that signal generation apparatus 40 is produced are set between the modulation circuit 10
NRZ data D2 is converted to according to D1 and is output to the modulation circuit 10 and pulse generating circuit 20.Because system is subsequently carried out
On-off keying (On-Off Keying, OOK), carries out NRZ conversion, it is to avoid data appearance " even 1 go here and there " situation when, subsequently
OOK modulation can be only completed to " the modulation of first data 1 ", it is to avoid cause loss of data in " even 1 go here and there ".The NRZ production
The nonreturn to zero code data that raw circuit can produce signal generation apparatus are converted to NRZ data and are output to the modulation circuit
Input and pulse generating circuit electrical level judging input.The modulated signal changed and changed without NRZ through NRZ
D3 comparison figure is as shown in Figure 2.
In one embodiment, a synchronous circuit can also be set；The input of the synchronous circuit is connected to described
The output end of signal generation apparatus 40, the output end of the synchronous circuit is connected to the input of the NRZ generation circuit 60
End；The synchronous circuit can be used for obtaining the clock signal synchronous with the nonreturn to zero code data D1, and be believed according to the clock
Number to the nonreturn to zero code data D1 carry out edge calibration.
In one embodiment, the modulation circuit 10 can also adjust institute according to the frequency bandwidth of default transmission signal
Digitally modulated carrier FD frequency is stated, and NRZ data D2 and adjusted figure are modulated into carrier wave FD and carries out on-off keying.
In this way, the frequency bandwidth of the transmission signal of final output can be adjusted.
The pulse generating circuit 20 can obtain digital pulse signal D4 according to following manner：
It is possible, firstly, to judge whether the high level of the NRZ data D2 arrives, waited if not arriving, if arriving
The rising edge of the modulated signal D3 is counted；
If count value is 1, exportable high level signal, the exportable low level signal when count value is 2 stops meter
Number, and count value is reset；
When the NRZ data D2 is low level, exportable low level signal, until the NRZ data D2's
High level occurs again, then repeats the above steps.
The output signal of the pulse generating circuit 20 can be regard as the digital pulse signal D4.
As shown in figure 3, the pulse generating circuit 20 may include level sensitive circuit 201, counting circuit 202 and pulse hair
Raw sub-circuit 203；The input of the level sensitive circuit 201 connects the output end of the signal generation apparatus 40, the electricity
The output end of flat detection circuit 201 connects the state output terminal and the pulse generation sub-circuit 203 of the counting circuit 202
Enable control end；The counting input end of the counting circuit 202 connects the output end of the modulation circuit 10, the counting circuit
202 output end connects the tally control end of the pulse generation sub-circuit 203；The output of the pulse generation sub-circuit 203
The input of the end connection power driving circuit 30.Digital pulse signal D4 described in foregoing circuit structural generation can be used.Tool
Body, the level sensitive circuit 201 can carry out electrical level judging to the NRZ data D2, when the NRZ data D2 is
During low level, it can control the pulse generation sub-circuit 203 and enter standby off working state, and make the pulse generation sub-circuit
The digital pulse signal D4 of 203 outputs keeps low level, and continues electrical level judging, when the NRZ data D2 is high level
When, can 202 pairs of notifications count circuit modulated signal D3 rising edge count, will be described if count value cnt=1
The digital pulse signal D4 that pulse generating circuit 20 is exported is set to high level, if count value cnt=2, by the pulse generation
The digital pulse signal D4 that sub-circuit 203 is exported is set to low level, while stopping counting and resetting count value cnt.Workflow
Journey is as shown in Figure 4.
The timing diagram that modulation and digit pulse are produced is as shown in Figure 5.
The power of the digital pulse signal D4 can be adjusted to predetermined power value by the power driving circuit 30, and will be defeated
The equivalent output impedance of egress, which is adjusted to the signal receiving device 300, to match, then by the digital pulse signal
D4 is transmitted into signal receiving device 300.
As shown in fig. 6, in one embodiment, the power driving circuit 30 may include push-pull power amplifier circuit 301
With bias set circuti 302；The signal input part of the push-pull power amplifier circuit 301 is defeated with the pulse generating circuit 20
Go out end to be connected, the output end phase of the bias input end of the push-pull power amplifier circuit 301 and the bias set circuti 302
Connection, output end is connected with the signal receiving device 300.Wherein, the push-pull power amplifier circuit 301 can be by the number
Word pulse signal D4 power is adjusted to predetermined power value, and the digital pulse signal D4 is transmitted into the signal reception dress
Put 300.The bias set circuti 302 equivalent output impedance of output node can be adjusted to the signal receiving device
300 match.
As shown in fig. 7, the push-pull power amplifier circuit 301 may include first resistor 301a, the first MOS transistor
301b, the second MOS transistor 301c, the 3rd MOS transistor 301d and the 4th MOS transistor 301e；The first resistor 301a
One end and the grid of the first MOS transistor 301b connect the output end of pulse generating circuit 20, the first resistor
The 301a other end connects drain electrode and the signal receiving device 300 of the second MOS transistor 301c；First MOS
Transistor 301b source electrode connection external power source, the drain electrode of the first MOS transistor 301b connects second MOS transistor
301c source electrode；The grid connection of the grid and the 3rd MOS transistor 301d of the second MOS transistor 301c is described partially
Put regulation circuit 302, drain electrode connection the 3rd MOS transistor 301d of the second MOS transistor 301c drain electrode and
The signal receiving device 300；The source electrode of the 3rd MOS transistor 301d connects the leakage of the 4th MOS transistor 301e
Pole, the grid of the 4th MOS transistor 301e connects the pulse generating circuit, the source of the 4th MOS transistor 301e
Pole is grounded.By the grid voltage for changing the second MOS transistor 301c and the 3rd MOS transistor 301d, thus it is possible to vary output knot
The equivalent output impedance of point, so as to play a part of output impedance regulation.The output impedance of the power driving circuit 30 can be with
Be adjusted to be equal to or approach the signal receiving device 300 input impedance value so that realize power match export.
In one embodiment, described sender unit 100, which may also include, is connected to the pulse generating circuit 20
Differential circuit 50 between power driving circuit 30；50 pairs of the differential circuit digital pulse signal D4 is carried out at differential
Differential signal D5 is exported after reason to the power driving circuit 30.The effect of the differentiation element is to remove the digit pulse letter
The flip-flop contained in number D4, and will be suitable for the power driving circuit 30 that the signal component of the frequency range of transmission is conveyed to rear class,
Carry out power amplification and output.
Fig. 8 is the flow chart of the signal transmitting method of one embodiment.As shown in figure 8, the signal transmitting method can be wrapped
Include following steps：
S1, receives NRZ data, and the NRZ data and digitally modulated carrier are carried out into on-off keying, modulated
Signal；
S2, receives the modulated signal, and when the rising edge of the NRZ data arrives, interception rising edge arrives
The corresponding modulated signal of first carrier cycle of the digitally modulated carrier, obtains digital pulse signal afterwards；
S3, is adjusted to predetermined power value, and launch the digital pulse signal by the power of the digital pulse signal.
Each step of above-mentioned signal transmitting method can be using each device in the embodiment of the sender unit
Realizing, it would however also be possible to employ software approach realizes that here is omitted.
Fig. 9 is the structural representation of the communicator of one embodiment.The communicator may include：
Sender unit 100, first sensor 200A, second sensor 200B, and signal receiving device 300；
The output end of the power driving circuit of the sender unit 100 and the input of the first sensor 200A
It is connected, the output end of the first sensor 200A is connected by transmission channel with the input of the second sensor 200B
Connect, the output end of the second sensor 200B is connected with the signal receiving device 300.
Wherein, signal generation apparatus 40 can produce raw baseband signal S1, and be output to sender unit 100, institute
Digital pulse signal D4 can be generated by stating sender unit 100, and final output is used for the OOK narrow pulse signals S2 of communication.Institute
Signal S2 can be coupled to channel by stating first sensor 200A, and signal S2 is after transmission, then by second sensor
200B detections obtain signal S2 ', and the signal receiving device 300 can will restore raw baseband signal after S2 ' reception processings.
In one embodiment, the first sensor 200A and second sensor 200B may be mounted at wearable device
Or in implantation equipment, for example, it is worn on blood oxygen transducer, Wrist watch type blood glucose sensor, Implantable ECG the monitoring sensing of finger tip
Device, implanted eeg signal acquisition sensor etc..The wearable device or implantation equipment can be carried by user, so as to
Using user as telecommunication media, communication is realized between sender unit 100 and signal receiving device 300.
The embodiment of the sender unit is identical with above-mentioned sender unit, and here is omitted.
The present invention improves the band efficiency and data transmission rate of human body channel, and system is operated in digital trigger-type
State, can be brought the per bit energy consumption of system and significantly reduced with the advantage of low-power consumption, low complex degree, high speed in realization, and
It can be realized completely using CMOS integrated circuit technologies, and in the absence of the integrated resistor and electric capacity shaping circuit of large area, be adapted to collection
Into in SOC, it is easy to promote.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
1. a kind of sender unit, it is characterised in that including：
Modulation circuit, pulse generating circuit and the adjustable power driving circuit of output impedance；
The power driving circuit includes push-pull power amplifier circuit and bias set circuti, the push-pull power amplifier circuit bag
Include first resistor, the first MOS transistor, the second MOS transistor, the 3rd MOS transistor and the 4th MOS transistor；
The electrical level judging input of the input of the modulation circuit and the pulse generating circuit connects signal and filled respectively
The output end put, the output end of the modulation circuit connects the signal input part of the pulse generating circuit, the pulse generation
The output end of circuit connects the input of the power driving circuit, and the output end connection signal of the power driving circuit is received
Device；
Wherein, the grid of one end of the first resistor and first MOS transistor connects the pulse generating circuit output
End, the other end of the first resistor connects the drain electrode of second MOS transistor and the signal receiving device；
The source electrode connection external power source of first MOS transistor, the drain electrode connection described second of first MOS transistor
The source electrode of MOS transistor；
The grid of the grid of second MOS transistor and the 3rd MOS transistor connects the defeated of the bias set circuti
Go out end, the drain electrode of drain electrode connection the 3rd MOS transistor of second MOS transistor and the signal receiving device；
The source electrode of 3rd MOS transistor connects the drain electrode of the 4th MOS transistor, the grid of the 4th MOS transistor
Pole connects the pulse generating circuit, the source ground of the 4th MOS transistor；
The modulation circuit receives the NRZ data that signal generation apparatus is produced, and the NRZ data and digital modulation are carried
Ripple carries out on-off keying, obtains modulated signal, and the modulated signal is exported to pulse generating circuit；
The pulse generating circuit receives the modulated signal, and when the rising edge of the NRZ data arrives, judges
Whether the high level of the NRZ data arrives, if so, then being counted to the rising edge of the modulated signal, works as count value
For 1 when, export high level digital pulse signal, when count value be 2 when, export low level signal digital pulse signal, stop
Only count, and count value is reset, first carrier cycle of the digitally modulated carrier is corresponding after interception rising edge arrives
Modulated signal, obtains digital pulse signal, and the digital pulse signal is exported to power driving circuit；
The power of the digital pulse signal is adjusted to predetermined power value by the power driving circuit, and by the digit pulse
Signal is transmitted into the signal receiving device.
2. sender unit according to claim 1, it is characterised in that also include：
It is connected to the NRZ generation circuit between the signal generation apparatus and the modulation circuit；
The nonreturn to zero code data that signal generation apparatus is produced are converted to NRZ data and exported by the NRZ generation circuit
To the input and the electrical level judging input of pulse generating circuit of the modulation circuit.
3. sender unit according to claim 2, it is characterised in that also include：
Synchronous circuit；
The input of the synchronous circuit is connected to the output end of the signal generation apparatus, and the output end of the synchronous circuit connects
It is connected to the input of the NRZ generation circuit；
The synchronous circuit is used to obtain the clock signal with the nonreturn to zero code data syn-chronization, and according to the clock signal pair
The nonreturn to zero code data carry out edge calibration.
4. sender unit according to claim 1, it is characterised in that also include：
It is connected to the differential circuit between the pulse generating circuit and power driving circuit；
The differential circuit is output to the power driving circuit after carrying out differential process to the digital pulse signal.
5. sender unit according to claim 1, it is characterised in that the modulation circuit is further used for：
The frequency of the digitally modulated carrier is adjusted according to the frequency bandwidth of default transmission signal；
NRZ data and adjusted figure modulation carrier wave are subjected to on-off keying.
6. a kind of signal transmitting method of the sender unit based on described in claim 1 to 5 any one, its feature exists
In comprising the following steps：
NRZ data are received, the NRZ data and digitally modulated carrier are subjected to on-off keying, modulated signal is obtained；
The modulated signal is received, and when the rising edge of the NRZ data arrives, interception rising edge is described after arriving
The corresponding modulated signal of first carrier cycle of digitally modulated carrier, obtains digital pulse signal；
The power of the digital pulse signal is adjusted to predetermined power value, and launches the digital pulse signal.
7. a kind of communicator, it is characterised in that including：
Sender unit as described in claim 1 to 5 any one, first sensor, second sensor, and signal connect
Receiving apparatus；
The output end of the power driving circuit of the sender unit is connected with the input of the first sensor, described
The output end of first sensor is connected by transmission channel with the input of the second sensor, the second sensor
Output end is connected with the signal receiving device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610532884.4A CN105933069B (en) | 2016-07-06 | 2016-07-06 | OOK pulse signals emitter, method and communicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532884.4A CN105933069B (en) | 2016-07-06 | 2016-07-06 | OOK pulse signals emitter, method and communicator |
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| CN105933069B true CN105933069B (en) | 2017-08-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552642A (en) * | 2008-03-31 | 2009-10-07 | 华为技术有限公司 | Method and device for alignment of return-to-zero modulating pulse and transmission data |
| CN102355925A (en) * | 2009-03-16 | 2012-02-15 | 耳蜗有限公司 | Transcutaneous modulated power link for a medical implant |
| CN103686867A (en) * | 2012-09-07 | 2014-03-26 | 瑞萨电子株式会社 | Wireless communication system and wireless communication apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4563737B2 (en) * | 2004-07-02 | 2010-10-13 | ルネサスエレクトロニクス株式会社 | Pulse width modulation circuit |
| CN102832914B (en) * | 2012-09-17 | 2015-08-05 | 电子科技大学 | A kind of digital pulse width modulator circuit |
-
2016
- 2016-07-06 CN CN201610532884.4A patent/CN105933069B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552642A (en) * | 2008-03-31 | 2009-10-07 | 华为技术有限公司 | Method and device for alignment of return-to-zero modulating pulse and transmission data |
| CN102355925A (en) * | 2009-03-16 | 2012-02-15 | 耳蜗有限公司 | Transcutaneous modulated power link for a medical implant |
| CN103686867A (en) * | 2012-09-07 | 2014-03-26 | 瑞萨电子株式会社 | Wireless communication system and wireless communication apparatus |
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