CN201312308Y - High-efficiency two-wire system power modulation bus - Google Patents

High-efficiency two-wire system power modulation bus Download PDF

Info

Publication number
CN201312308Y
CN201312308Y CNU2008201568604U CN200820156860U CN201312308Y CN 201312308 Y CN201312308 Y CN 201312308Y CN U2008201568604 U CNU2008201568604 U CN U2008201568604U CN 200820156860 U CN200820156860 U CN 200820156860U CN 201312308 Y CN201312308 Y CN 201312308Y
Authority
CN
China
Prior art keywords
voltage
circuit
signal
low
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008201568604U
Other languages
Chinese (zh)
Inventor
宋奕
郭兆斌
刘荣鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Anheng Gas Technology Co.,Ltd.
Original Assignee
SHANGHAI FUZHAN ELECTRIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI FUZHAN ELECTRIC TECHNOLOGY Co Ltd filed Critical SHANGHAI FUZHAN ELECTRIC TECHNOLOGY Co Ltd
Priority to CNU2008201568604U priority Critical patent/CN201312308Y/en
Application granted granted Critical
Publication of CN201312308Y publication Critical patent/CN201312308Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

The utility model provides a high-efficiency two-wire system power modulation bus, which belongs to the field of electronics and circuits. The modulation bus comprises two buses for supplying power and modulating signals, a sampling circuit, a hysteretic feedback circuit, a low-pass filter circuit and a signal comparator. By employing the hysteretic feedback circuit input on the signal comparator and increasing hysteretic feedback voltage, the utility model is capable of realizing following effect of the hysteretic feedback circuit, thereby enabling the power bus to have stronger anti-interference capability, lower error-code rate and higher signal-transmission rate when achieving data-signal transmission.

Description

A kind of high-efficient two-wire system power modulation bus
Technical field
The utility model belongs to electronics, circuit field.
Background technology
Utilize a cover power line, simultaneously electric energy transmitting and digital communication signal are circuit set-up modes very efficiently.But at present, this The Application of Technology also is not very extensive, studies carefully its main cause, is that present technology has many defectives, is that mainly poor anti jamming capability, error rate height, transmission rate are low.
Join shown in Figure 1ly, showed the structural representation of present existing bus carrier wave demodulation circuit here.It includes two bus sampling resistors, and the sampled voltage of the positive termination bus of comparator, negative terminal connects the sampled voltage after low pass filter is handled.
The cut-off frequency of low pass filter wherein is very low, and a large amount of signals comprises signal of communication and interference signal etc., all has been filtered, and this makes that the magnitude of voltage of output of negative terminal is comparatively steady, is unfavorable for the original state of expression data information.
The utility model content
The purpose of this utility model provides a kind of high-efficient two-wire system power modulation bus, in order to realize strong anti-interference ability, low error rate, the power supply of high transfer rate and the synchronous transmission circuit of signal of communication.
A kind of high-efficient two-wire system power modulation bus, it realizes that so this modulation bus comprises in order to two buses of power supply and modulation signal to be provided, it is characterized in that this modulation bus also comprises:
Sample circuit is formed by being arranged on two divider resistances between the bus, and the following hysteresis feedback circuit and the voltage sample point of low-pass filter circuit all are arranged between the described divider resistance;
The hysteresis feedback circuit, it adjusts resistance by the hysteresis amount and the hysteresis feedback resistance is formed jointly, its voltage sample point is arranged between the divider resistance of described sample circuit, output is connected with the anode of following signal comparator, and the voltage of output equals sampled voltage and hysteresis amount voltage sum;
Low-pass filter circuit, it is made of jointly low-pass filtering resistance and low-pass filtering electric capacity, and its voltage sample point is arranged between the divider resistance of described sample circuit, and its output constitutes the negative terminal input voltage of following signal comparator;
Signal comparator, it is the voltage signal in order to voltage signal that receives the input of hysteresis feedback circuit and low-pass filter circuit input, carries out voltage ratio to realize the device of signal output.
Further, foregoing hysteresis feedback resistance is much larger than two sampling resistors, to such an extent as to the electric current that feeds back to is very little to the voltage influence of hysteresis circuit sampling point.
Described hysteresis feedback resistance, its recommendation are 4.7M Ω.
The constituent relation of each device is in the described high-efficient two-wire system power modulation bus
V 3 - V 2 = R 2 / ( R 1 + R 2 ) * Δ ( t ) + R 4 / ( R 4 + R 5 ) * ( V out 0 - V 10 - R 2 /
( R 1 + R 2 ) * Δ ( t ) ) - ∫ 0 t R 2 / ( R 1 + R 2 ) * Δ ( t ) R 3 C 1 dt .
Wherein,
V 2Be signal comparator negative terminal input voltage, corresponding the voltage input of low-pass filter circuit,
V 3Be signal comparator anode input voltage, corresponding the voltage input of hysteresis feedback circuit,
R 1Be arranged on a sampled voltage in the described sample circuit,
R 2Be arranged on another sampled voltage in the described sample circuit,
R 3Be arranged on the low-pass filtering resistance in the described low-pass filter circuit,
R 4The hysteresis amount that is arranged in the described hysteresis feedback circuit is adjusted resistance,
R 5Be arranged on the hysteresis feedback resistance in the described hysteresis feedback circuit,
C 1Be arranged on the low-pass filtering electric capacity in the described low-pass filter circuit,
V 10Be the initial voltage sampled value in the described sample circuit,
V Out0Be signal output level initial in the described signal comparator,
Δ (t) is the change in voltage of described bus,
In the aforementioned formula, when Δ (t) corresponding during interference signal, if t separates and then disturbs successfully, if t has and separates then interference and fail,
When Δ (t) corresponding during data-signal, if t separates and t＜1/Baud rate, transmission success then is not if t has and separates then data transmission fails.
Described high-efficient two-wire system power modulation bus can be connected with data acquisition module, monitoring function module, communication function module, as the data communication and the power supply supply structure of corresponding module.
Advantage of the present utility model is: the utility model utilization is input to the hysteresis feedback circuit on the signal comparator, by increasing the hysteresis feedback voltage, can realize the following effect of hysteresis feedback circuit, make this power bus when realizing data, antijamming capability is stronger, error code rate is lower, signal transmission rate is higher.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is the circuit diagram of current existing two-wire system power modulation bus.
Fig. 2 is the circuit diagram of high-efficient two-wire system power modulation bus described in the utility model.
Fig. 3 is the flow chart of the implementation method of high-efficient two-wire system power modulation bus described in the utility model.
Embodiment
Number designation explanation among the figure:
The 100-high-efficient two-wire system power modulation bus; 200-bus A, the 210-bus B; 300-sample circuit, the 310-divider resistance of sampling, 320-voltage sample point; 400-hysteresis feedback circuit, 410-hysteresis amount is adjusted resistance, 420-hysteresis feedback resistance; The 500-low-pass filter circuit, 510-low-pass filtering resistance, 520-low-pass filtering electric capacity; The 600-signal comparator.
Join shown in Figure 2, the described a kind of high-efficient two-wire system power modulation bus 100 of the utility model, the advantage that has that the output transmission speed is fast, the error rate is low etc.It realizes that so this modulation bus comprises in order to two buses of power supply and modulation signal to be provided, as an example, can be respectively bus A200 and bus B 210, and modulation signal wherein comes from the sender unit that is connected with bus.In the utility model, as key character, this modulation bus also comprises:
Sample circuit 300 is formed by being arranged on two sampling divider resistances 310 between the bus, and the following hysteresis feedback circuit 400 and the voltage sample point 320 of low-pass filter circuit 500 all are arranged between the described sampling divider resistance 310.Sampling divider resistance 310 wherein is fit to the input voltage that following signal comparator 600 compares in order to provide between bus A200 and bus B 210.As typical embodiment, sampling divider resistance 310 can be provided with two, in the accompanying drawings, is respectively divider resistance R 1With divider resistance R 2 Voltage sample point 320 is arranged on divider resistance R 1With divider resistance R 2Between.
Hysteresis feedback circuit 400, it adjusts resistance 410 by the hysteresis amount and hysteresis feedback resistance 420 is formed jointly, its voltage sample point 320 is arranged between the sampling divider resistance 310 of described sample circuit 300, output is connected with following signal comparator 600 anodes, and the voltage of its output equals sampled voltage and hysteresis amount voltage sum;
Low-pass filter circuit 500, it is made of jointly low-pass filtering resistance 510 and low-pass filtering electric capacity 520, its voltage sample point 320 and being arranged on equally between the sampling divider resistance 310 of described sample circuit 300, its output constitutes the negative terminal input voltage of following signal comparator 600;
Signal comparator 600, it is in order to the voltage signal that receives hysteresis feedback circuit 400 outputs and the voltage signal of low-pass filter circuit 500 outputs, carries out voltage ratio to realize the device of signal output.
Foregoing hysteresis feedback resistance 420 is much larger than two sampling resistors 310, to such an extent as to the electric current that feeds back to is very little to the voltage influence of sampled point.In this case, hysteresis feedback circuit 400 is produced follows voltage, can effectively improve the resistivity of 600 pairs of interference signals of signal comparator.
Described here hysteresis feedback resistance 420, and non-limiting, recommendation can be taken as 4.7M Ω as exemplary embodiments.
Among the described bus circuit, the constituent relation between each device is:
V 3 - V 2 = R 2 / ( R 1 + R 2 ) * Δ ( t ) + R 4 / ( R 4 + R 5 ) * ( V out 0 - V 10 - R 2 /
( R 1 + R 2 ) * Δ ( t ) ) - ∫ 0 t R 2 / ( R 1 + R 2 ) * Δ ( t ) R 3 C 1 dt ,
V wherein 2Be signal comparator 600 negative terminal input voltages, corresponding the voltage input of low-pass filter circuit 500;
V 3Be signal comparator 600 anode input voltages, corresponding the voltage input of hysteresis feedback circuit 400,
R 1Be arranged on a sampled voltage in the described sample circuit 300;
R 2Be arranged on another sampled voltage in the described sample circuit 300;
R 3Be arranged on the low-pass filtering resistance 510 in the described low-pass filter circuit 500;
R 4The hysteresis amount that is arranged in the described hysteresis feedback circuit 400 is adjusted resistance 410;
R 5Be arranged on the hysteresis feedback resistance 420 in the described hysteresis feedback circuit 400;
C 1Be arranged on the low-pass filtering electric capacity 520 in the described low-pass filter circuit 500;
V 10It is the initial voltage sampled value in the described sample circuit 300;
V Out0It is signal output level initial in the described signal comparator;
Δ (t) is the change in voltage of described bus;
In the aforementioned formula, when Δ (t) corresponding during interference signal, if t separates and then disturbs successfully, if t has and separates then interference and fail;
When Δ (t) corresponding during data-signal, if t separates and t＜1/Baud rate, transmission success then is not if t has and separates then data transmission fails.Baud rate wherein refers to the bit rate of transfer of data.
This bus high-efficient two-wire system power modulation bus 100 is used extremely extensive.In typical embodiment, respectively can with data acquisition module, monitoring function module, communication function module in be connected one of at least, as the data of corresponding module and the conducting structure of power supply, realize data acquisition function, monitoring function, communication function etc. respectively.Advantage of the present utility model just is that transfer of data and power delivery can utilize bus to realize simultaneously.
High-efficient two-wire system power modulation bus 100 described in the utility model, it has oneself independently cover implementation method, and particularly, it realizes that so this method comprises the steps:
Step 1 is utilized sender unit, signal of communication is modulated, and be loaded on the bus.
Described sender unit is the signal recurring structure that is connected with bus A200, and the signal that the produces form with voltage signal directly is loaded on the bus, and is superimposed with power source voltage.
Step 2, utilize bleeder circuit between the sample circuit 300 of bus, to obtain sampled voltage, and will be through the input signal of low-pass filter circuit 500 processed voltage signal as signal comparator 600 negative terminals, utilize hysteresis feedback circuit 420 that the voltage signal of comparator feedback quantity is superimposed on sampled voltage, as the anode input of signal comparator 600.
Join embodiment shown in Figure 2, the voltage signal that low-pass filter circuit 500 is gathered is the negative input end of signal comparator 600, and the voltage signal that hysteresis feedback circuit 400 is collected is positive input terminal.
Step 3, signal comparator 600 is determined signal comparator 600 output levels according to hysteresis feedback circuit 400 and low-pass filter circuit 500 both institute's input voltage signals.
In this case, exported by the just direct data-signal of realizing of signal comparator 600.
In the utility model, to join shown in Figure 2ly, the roll over condition of signal comparator 600 output levels is:
V 3＞V 2, if V 30＜V 20,
V 3＜V 2, if V 30＞V 20,
Wherein, V 10=R 2/ (R 1+ R 2) * V Bus0, V 10Expression V 1At the level in 0 moment,
V 20＝V 10，
V 30＝V 10+R 4/(R 4+R 5)*(V out0-V 10)，
V 3 - V 2 = R 2 / ( R 1 + R 2 ) * Δ ( t ) + R 4 / ( R 4 + R 5 ) * ( V out 0 - V 10 - R 2 /
( R 1 + R 2 ) * Δ ( t ) ) - ∫ 0 t R 2 / ( R 1 + R 2 ) * Δ ( t ) R 3 C 1 dt .
Further, low-pass filter circuit 500 in the described step 2 and hysteresis feedback circuit 400 are to realize the voltage sample operation between the sampling resistor that links to each other via double bus.In the embodiment shown in Figure 2, concrete sampled point just is arranged on sampling resistor R 1With sampling resistor R 2Between.
Hysteresis feedback resistance 420 in the hysteresis feedback circuit 400 in the described step 2 is much larger than the sampling resistor between described two buses.The purpose of She Zhiing is like this, reduces the influence of hysteresis feedback current to sampled voltage.
The implementation method of described high-efficient two-wire system power modulation bus can realize the transmission of data-signal on the basis of realizing power delivery with aforesaid level roll over condition in data acquisition module, monitoring function module, communication function module.
Certainly, these application are for example and non-limiting, in principle, so long as need the bus structures of transfer of data and DC power supply synchronous transmission, can use the utility model.
More than be to description of the present utility model and unrestricted, based on other embodiment of the utility model thought, also all among protection range of the present utility model.

Claims (5)

1. high-efficient two-wire system power modulation bus, it realizes that so this modulation bus comprises in order to two buses of power supply and modulation signal to be provided, it is characterized in that this modulation bus also comprises:
Sample circuit is formed by being arranged on two divider resistances between the bus, and the following hysteresis feedback circuit and the voltage sample point of low-pass filter circuit all are arranged between the described divider resistance;
The hysteresis feedback circuit, it adjusts resistance by the hysteresis amount and the hysteresis feedback resistance is formed jointly, its voltage sample point is arranged between the divider resistance of described sample circuit, output is connected with the anode of following signal comparator, and the voltage of output equals sampled voltage and hysteresis amount voltage sum;
Low-pass filter circuit, it is made of jointly low-pass filtering resistance and low-pass filtering electric capacity, and its voltage sample point is arranged between the divider resistance of described sample circuit, and its output constitutes the negative terminal input voltage of following signal comparator;
Signal comparator, it is the voltage signal in order to voltage signal that receives the input of hysteresis feedback circuit and low-pass filter circuit input, carries out voltage ratio to realize the device of signal output.
2. a kind of high-efficient two-wire system power modulation bus according to claim 1 is characterized in that: described hysteresis feedback resistance is much larger than two sampling resistors, to such an extent as to the electric current that feeds back to is with very little to the voltage influence of circuit sampling point.
3. a kind of high-efficient two-wire system power modulation bus according to claim 1 is characterized in that: described hysteresis feedback resistance, its recommendation are 4.7M Ω.
4. a kind of high-efficient two-wire system power modulation bus according to claim 1 is characterized in that: the constituent relation of each device is in the described high-efficient two-wire system power modulation bus
V 3 - V 2 = R 2 / ( R 1 + R 2 ) * Δ ( t ) + R 4 / ( R 4 + R 5 ) * ( V out 0 - V 10 - R 2 /
( R 1 + R 2 ) * Δ ( t ) ) - ∫ 0 t R 2 / ( R 1 + R 2 ) * Δ ( t ) R 3 C 1 dt ,
Wherein,
V 2Be signal comparator negative terminal input voltage, corresponding the voltage input of low-pass filter circuit,
V 3Be signal comparator anode input voltage, corresponding the voltage input of hysteresis feedback circuit,
R 1Be arranged on a sampled voltage in the described sample circuit,
R 2Be arranged on another sampled voltage in the described sample circuit,
R 3Be arranged on the low-pass filtering resistance in the described low-pass filter circuit,
R 4The hysteresis amount that is arranged in the described hysteresis feedback circuit is adjusted resistance,
R 5Be arranged on the hysteresis feedback resistance in the described hysteresis feedback circuit,
C 1Be arranged on the low-pass filtering electric capacity in the described low-pass filter circuit,
V 10Be the initial voltage sampled value in the described sample circuit,
V Out0Be signal output level initial in the described signal comparator,
Δ (t) is the change in voltage of described bus,
In the aforementioned formula, when Δ (t) corresponding during interference signal, if t separates and then disturbs successfully, if t has and separates then interference and fail,
When Δ (t) corresponding during data-signal, if t separates and t＜1/Baud rate, transmission success then is not if t has and separates then data transmission fails.
5. a kind of high-efficient two-wire system power modulation bus according to claim 1, it is characterized in that: described high-efficient two-wire system power modulation bus, can be connected with data acquisition module, monitoring function module, communication function module, as the data communication and the power supply supply structure of corresponding module.
CNU2008201568604U 2008-12-10 2008-12-10 High-efficiency two-wire system power modulation bus Expired - Lifetime CN201312308Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201568604U CN201312308Y (en) 2008-12-10 2008-12-10 High-efficiency two-wire system power modulation bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201568604U CN201312308Y (en) 2008-12-10 2008-12-10 High-efficiency two-wire system power modulation bus

Publications (1)

Publication Number Publication Date
CN201312308Y true CN201312308Y (en) 2009-09-16

Family

ID=41109563

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201568604U Expired - Lifetime CN201312308Y (en) 2008-12-10 2008-12-10 High-efficiency two-wire system power modulation bus

Country Status (1)

Country Link
CN (1) CN201312308Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447807B (en) * 2008-12-10 2012-08-22 上海复展电子科技有限公司 High-efficient two-wire system power modulation bus and implementing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447807B (en) * 2008-12-10 2012-08-22 上海复展电子科技有限公司 High-efficient two-wire system power modulation bus and implementing method thereof

Similar Documents

Publication Publication Date Title
US9276621B2 (en) Method and apparatus for differential communications
US8964863B2 (en) Communicating with a self-clocking amplitude modulated signal
CN107453427A (en) CAN signal wake-up circuit
CN205302279U (en) Serial interface data protocol converter
CN101447807B (en) High-efficient two-wire system power modulation bus and implementing method thereof
US20050053124A1 (en) System and method for implementing a delta-sigma modulator integrity supervisor
CN201312308Y (en) High-efficiency two-wire system power modulation bus
CN102201836A (en) High-efficiency two-wire system power supply modulation bus and realization method thereof
CN112242825A (en) Filtering protection circuit based on serial interface chip
CN104077260B (en) A kind of concentrator M BUS host communication interface arrangements
KR101457268B1 (en) Capacitive communication circuit and method therefor
CN204518093U (en) A kind of OFDM carrier wave of low-power consumption and GFSK wireless double mode communication chip
AU2009311067B2 (en) Master-slave mode direct current carrier communication system
CN201666911U (en) Voltage detecting device of medium- and high-voltage variable frequency speed governor
CN102306444B (en) Receiving circuit of meter-BUS (M-BUS) master station and data receiving method for receiving circuit
CN101090282A (en) Power carrier communication circuit capable of overcome compensating capacitor
CN114531178A (en) Charging and bidirectional communication system and method
CN203101499U (en) Voltage acquisition circuit
CN218041372U (en) Decoding circuit for decoding specific coded signal
CN205453300U (en) Veneer monitored control system and panel monitored control system
CN104660543A (en) Low-power-consumption OFDM carrier and GFSK wireless dual-mode communication chip
CN217563647U (en) Circuit for realizing data, control and power transmission based on same coaxial line
CN211046875U (en) Signal locking circuit
CN210405267U (en) Level conversion system
CN218041373U (en) Mutually-matched coding and decoding circuit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHANGHAI ANHENG GAS TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: SHANGHAI FUZHAN ELECTRIC TECHNOLOGY CO., LTD.

Effective date: 20120307

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20120307

Address after: 200433 room 335, No. 10010, National Road, Shanghai, Yangpu District

Patentee after: Shanghai Anheng Gas Technology Co.,Ltd.

Address before: 200433, room 1, building 335, No. 7004, National Road, Shanghai, Yangpu District

Patentee before: Shanghai Fuzhan Electric Technology Co., Ltd.

AV01 Patent right actively abandoned

Granted publication date: 20090916

Effective date of abandoning: 20081210