CN110430106A - A kind of airplane power source signal multiplexing bus and its transmission circuit - Google Patents
A kind of airplane power source signal multiplexing bus and its transmission circuit Download PDFInfo
- Publication number
- CN110430106A CN110430106A CN201910648007.7A CN201910648007A CN110430106A CN 110430106 A CN110430106 A CN 110430106A CN 201910648007 A CN201910648007 A CN 201910648007A CN 110430106 A CN110430106 A CN 110430106A
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- circuit
- transmission
- signal
- voltage
- power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/4028—Bus for use in transportation systems the transportation system being an aircraft
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
Abstract
The present invention provides a kind of airplane power source signal multiplexing bus, which includes power signal line and ground wire；The power signal line is used for transmission DC power supply and digital signal；The ground wire is referred to for electric current loop line and signal；Voltage value on the power signal line floats up and down δ V using supply voltage V to be transmitted as reference level, 1 is identified as when level is jumped from V- δ V to V+ δ V, it jumps from V+ δ V to V- δ V and is identified as 0, the transmission of data is realized by the continuous jump of " 1 " " 0 ", transmission supply voltage V realizes the energy transmission of DC power supply.Multiplex bus provided by the invention can reduce the physical connection number of cables of sensor and controller class equipment on current aircraft, can be substantially reduced the external interface of sensor and controller class equipment, and then significantly reduce the weight of cable on aircraft.
Description
Technical field
The invention belongs to avionics fields, and in particular to a kind of airplane power source signal multiplexing bus and its realization side
Method.
Background technique
In the aircraft such as aircraft, there is big quantity sensor and controller class equipment, when aircraft carries out overall design,
It generally requires to provide power supply to such equipment, and additionally connects bus type digital signal, to realize the company of sensor and controller
Net and control, even if the equipment volume, power consumption is small again also at least to need two class buses to be attached, due on machine sensor and
The data of controller are huge, result in cable on machine and occupy a large amount of weight of aircraft.
While in order to be compatible with the transmission of power supply and signal, the aerospace connectors for needing to select needle number more, and then must select
Relatively large aerospace connectors are selected, to limit sensor and controller class equipment volume.
Summary of the invention
Goal of the invention: a kind of airplane power source signal multiplexing bus and its implementation are provided, reduces and is sensed on current aircraft
The physical connection number of cables of device and controller class equipment, can be substantially reduced sensor and controller class equipment to external
Mouthful, and then significantly reduce the weight of cable on aircraft.
Technical solution: a kind of airplane power source signal multiplexing bus, the bus include power signal line and ground wire；
The power signal line is used for transmission DC power supply and digital signal；
The ground wire is referred to for electric current loop line and signal；
Voltage value on the power signal line floats up and down δ V using supply voltage V to be transmitted as reference level, works as level
It is identified as 1 when jumping from V- δ V to V+ δ V, jumps from V+ δ V to V- δ V and is identified as 0, number is realized in the continuous jump for passing through " 1 " " 0 "
According to transmission, transmission supply voltage V realize DC power supply energy transmission.
Another object of the present invention is to provide the transmission circuit of above-mentioned airplane power source signal multiplexing bus, the electricity
Road includes transmitting line, power signal line, ground wire and receives circuit composition；
The transmitting line includes level shifting circuit and add circuit；
The reception circuit includes signal averaging circuit, comparison circuit and edge sense circuit.
Preferably, the level shifting circuit is used to for the digital signal received being converted into the analog signal of ± δ V.
Preferably, the signal that the add circuit is used to sum up to obtain V ± δ V for DC power supply and analog signal is defeated
Out.
Preferably, the power signal line is used for transmission DC power supply and digital signal；
Voltage value on the power signal line floats up and down δ V using supply voltage V to be transmitted as reference level, works as level
It is identified as 1 when jumping from V- δ V to V+ δ V, jumps from V+ δ V to V- δ V and is identified as 0, " 1 " " 0 " continuously data transmission is realized in jump,
Average voltage is the energy transmission that V realizes DC power supply.
Preferably, on the available power signal line of signal averaging circuit voltage average value.
Preferably, the comparison circuit is the voltage comparator with Schmitt function, is carried out to input voltage and average value
Compare.
Preferably, the edge sense circuit realizes the detection function of rising edge and failing edge, when detecting rising edge
Output is 1, and when detecting failing edge, output is 0.
The utility model has the advantages that the present invention can reduce sensor and the physical connection cable number of controller class equipment on current aircraft
Amount, can be substantially reduced the external interface of sensor and controller class equipment, and then significantly reduce the weight of cable on aircraft.
Detailed description of the invention
Fig. 1 is a kind of airplane power source signal multiplexing bus schematic diagram
Fig. 2 is a kind of schematic diagram of airplane power source signal multiplexing bus in voltage fluctuation
Fig. 3 is a kind of airplane power source signal multiplexing bus realization method reception circuit diagram
Fig. 4 is a kind of airplane power source signal multiplexing bus realization method transmitting line schematic diagram
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Fig. 1~2, a kind of airplane power source signal multiplexing bus of the present invention is made of power signal line 1 and ground wire 2,
It is characterized in that, the power signal line 1 is used for transmission DC power supply and digital signal, ground wire 2 is used for electric current loop line and signal
With reference to.Voltage value on power signal line 1 floats up and down δ V (V > 0 δ) by reference level of supply voltage V to be transmitted, works as level
It is identified as 1 when jumping from V- δ V to V+ δ V, jumps from V+ δ V to V- δ V and is identified as 0, when power supply V fluctuation, will lead to power supply letter
Voltage V on number line 1 follows fluctuation, does not influence logical value " 1 " " 0 " judgement, " 1 " " 0 " continuously data transmission, voltage are realized in jump
Average value is the energy transmission that V realizes DC power supply.
Such as Fig. 3~4, such as transmission circuit of above-mentioned airplane power source signal multiplexing bus, receiving circuit includes that signal is flat
Equal circuit 3, comparison circuit 4 and edge sense circuit 5 form.Transmitting line includes level shifting circuit 6, and add circuit 7 forms.
The average value of voltage on the available power signal line of average circuit, comparison circuit are the voltage comparator with Schmitt function,
Input voltage is compared with average value, exports logical zero when level is V- δ V, logic 1, side are exported when level is V+ δ V
The detection function that rising edge and failing edge are then realized along detection circuit, exports 1 when detecting rising edge, and when failing edge exports 0.
Include sending and receiving two parts when specific implementation, wherein receiving step is as follows:
1) average voltage circuit 3 carries out voltage value on cable average in real time, and when realization can be used after AD sampling with number
It carries out average or is realized using capacitor charge and discharge
2) comparison circuit 4 is compared real-time cable voltage and average value.It is defeated when exporting real-time cable greater than average value
Otherwise logical zero out exports logic 1, until edge sense circuit 5.
3) edge sense circuit 5 obtains the signal finally to be transmitted according to the variation on edge, is when for rising edge " 1 ", inspection
It is " 0 " when measuring failing edge.
Wherein sending step is as follows:
1) voltage conversion circuit 6 converts signal, when signal is 1, the rising edge of output-δ V to δ V to addition
Circuit exports the failing edge level of δ V to-δ V to add circuit when signal is 0.
2) add circuit 7 realizes the overlaying function of supply voltage and signal voltage, and superimposed voltage output to power supply is believed
On number line 1.To realize the transmission of data.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of airplane power source signal multiplexing bus, which is characterized in that the bus includes power signal line and ground wire；
The power signal line is used for transmission DC power supply and digital signal；
The ground wire is referred to for electric current loop line and signal；
Voltage value on the power signal line floats up and down δ V using supply voltage V to be transmitted as reference level, when level is from V- δ
V is identified as 1 when jumping to V+ δ V, jumps from V+ δ V to V- δ V and is identified as 0, and the biography of data is realized in the continuous jump for passing through " 1 " " 0 "
Defeated, transmission supply voltage V realizes the energy transmission of DC power supply.
2. the transmission circuit of airplane power source signal multiplexing bus as described in claim 1, which is characterized in that the circuit includes
Transmitting line, power signal line, ground wire and reception circuit composition；
The transmitting line includes level shifting circuit and add circuit；
The reception circuit includes signal averaging circuit, comparison circuit and edge sense circuit.
3. transmission circuit according to claim 2, which is characterized in that the level shifting circuit is used for the number that will be received
Word signal is converted into the analog signal of ± δ V.
4. transmission circuit according to claim 2, which is characterized in that the add circuit is used for DC power supply and simulation
Signal sums up to obtain the signal output of V ± δ V.
5. transmission circuit according to claim 2, which is characterized in that the power signal line be used for transmission DC power supply and
Digital signal；
Voltage value on the power signal line floats up and down δ V using supply voltage V to be transmitted as reference level, when level is from V- δ
V is identified as 1 when jumping to V+ δ V, jumps from V+ δ V to V- δ V and is identified as 0, and " 1 " " 0 " continuously data transmission, voltage are realized in jump
Average value is the energy transmission that V realizes DC power supply.
6. transmission circuit according to claim 2, which is characterized in that the available power supply signal of signal averaging circuit
The average value of voltage on line.
7. transmission circuit according to claim 2, which is characterized in that the comparison circuit is the voltage with Schmitt function
Comparator is compared input voltage with average value.
8. transmission circuit according to claim 2, which is characterized in that the edge sense circuit realizes rising edge and decline
The detection function on edge, when detecting rising edge, output is 1, and when detecting failing edge, output is 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648007.7A CN110430106A (en) | 2019-07-17 | 2019-07-17 | A kind of airplane power source signal multiplexing bus and its transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648007.7A CN110430106A (en) | 2019-07-17 | 2019-07-17 | A kind of airplane power source signal multiplexing bus and its transmission circuit |
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| Publication Number | Publication Date |
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| CN110430106A true CN110430106A (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910648007.7A Pending CN110430106A (en) | 2019-07-17 | 2019-07-17 | A kind of airplane power source signal multiplexing bus and its transmission circuit |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431347A (en) * | 2008-12-04 | 2009-05-13 | 华为技术有限公司 | Wireless distributed equipment and system and signal transmission method |
| CN107896400A (en) * | 2017-12-12 | 2018-04-10 | 无锡德芯微电子有限公司 | Utilize the LED drive circuit and data transmission method of power line transmission data |
-
2019
- 2019-07-17 CN CN201910648007.7A patent/CN110430106A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431347A (en) * | 2008-12-04 | 2009-05-13 | 华为技术有限公司 | Wireless distributed equipment and system and signal transmission method |
| CN107896400A (en) * | 2017-12-12 | 2018-04-10 | 无锡德芯微电子有限公司 | Utilize the LED drive circuit and data transmission method of power line transmission data |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191108 |