CN108233957A - Data transmission method for uplink - Google Patents
Data transmission method for uplink Download PDFInfo
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- CN108233957A CN108233957A CN201711250260.4A CN201711250260A CN108233957A CN 108233957 A CN108233957 A CN 108233957A CN 201711250260 A CN201711250260 A CN 201711250260A CN 108233957 A CN108233957 A CN 108233957A
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- Prior art keywords
- voltage
- signal
- data
- interface
- transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Abstract
The present invention provides a kind of data transmission method for uplink, including：Had using the communication interface of the data transmission method for uplink transmission data and only there are two communications pins, a pin ground connection in described two communications pins, another pin is used for transmission data signal for data pin, the data pin is respectively connected to the power supply interface of power cord and the first end of voltage regulator module, the method includes：Main control chip obtains data to be sent；The main control chip generates control Signal-controlled switch module and is switched on or switched off the second end of the voltage regulator module and the circuit pathways of ground terminal, the second voltage signal of the first voltage signal of bit 0 and bit 1 in the data to be sent is represented to adjust to be alternately produced at the data pin by the voltage regulator module, wherein, voltage value of the voltage value of the first voltage signal not equal to the second voltage signal and equal non-zero.
Description
Technical field
The present invention relates to a kind of electronic technology field more particularly to a kind of data transmission method for uplink.
Background technology
At present, in the implementation distance signal transmission when, position residing for data sending device present position and data sink
It is usually separated by a distance between putting, data transmission scheme design it is whether suitable, it will influence the stability of signal transmission with
And quality.
Invention content
The present invention is intended to provide a kind of novel data transmission method for uplink, it is ensured that the stability and quality of signal transmission.
It is a primary object of the present invention to provide a kind of data transmission method for uplink.
In order to achieve the above objectives, the present invention provides following technical schemes：
A kind of data transmission method for uplink, is had using the communication interface of the data transmission method for uplink transmission data and only there are two logical
Believe pin, a pin ground connection in described two communications pins, another pin is data pin for transmission data signal, institute
It states data pin and is respectively connected to the power supply interface of power cord and the first end of voltage regulator module, the method includes：Master control
Chip obtains data to be sent；The main control chip generates control Signal-controlled switch module and is switched on or switched off the voltage adjustment
The second end of module and the circuit pathways of ground terminal are alternately produced with being adjusted by the voltage regulator module at the data pin
It is raw to represent the first voltage signal of bit 0 and the second voltage signal of bit 1 in the data to be sent, wherein, described first
Voltage value of the voltage value of voltage signal not equal to the second voltage signal and equal non-zero.
Through the above technical solutions, using new types of data sending method provided by the invention, data to be sent are when sending
The equal non-zero of voltage value of the voltage signal of use, and in the prior art when sending data by the way that voltage value is pulled low to zero phase
Than, on the one hand, the continued power to receiving end device can be realized by the voltage signal sent, it on the other hand, can be with
The efficiency that data are sent is improved, reduces taking for data transmission.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the schematic diagram of a kind of data transmission method for uplink that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 2 provides；
Fig. 3 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 2 provides；
Fig. 4 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 3 provides；
Fig. 5 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 3 provides；
Fig. 6 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 4 provides；
Fig. 7 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 4 provides；
Fig. 8 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 5 provides；
Fig. 9 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 5 provides；
Figure 10 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 6 provides；
Figure 11 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 6 provides；
Figure 12 is a kind of schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 7 provides；
Figure 13 is another schematic diagram of a kind of data transmission circuit that the embodiment of the present invention 7 provides.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Embodiment 1
A kind of data transmission method for uplink, is had using the communication interface of the data transmission method for uplink transmission data and only there are two logical
Believe pin, a pin ground connection in described two communications pins, another pin is data pin for transmission data signal, institute
It states data pin and is respectively connected to the power supply interface of power cord and the first end of voltage regulator module, as shown in Figure 1, the method
Including：
101st, main control chip obtains data to be sent；
The data to be sent can be the bit sequence represented using bit 0 and bit 1.
102nd, the main control chip, which generates, controls Signal-controlled switch module to be switched on or switched off the voltage regulator module
The circuit pathways of second end and ground terminal are represented with adjusting to be alternately produced at the data pin by the voltage regulator module
The second voltage signal of the first voltage signal of bit 0 and bit 1 in the data to be sent, wherein, the first voltage letter
Number voltage value not equal to the second voltage signal voltage value and equal non-zero.
Illustratively, represent that the voltage value of the first voltage signal of bit 0 can be more than the second voltage letter for representing bit 1
Number voltage value, certainly, according to the needs of practical application, another way can also be used, for example, represent bit 0 first
The voltage value of voltage signal can be less than the voltage value for the second voltage signal for representing bit 1, be not limited thereto.
Illustratively, the voltage value of first voltage signal can be more than or less than or equal to the voltage value that power cord provides,
Equally, the voltage value of second voltage signal can also be more than or less than or equal to the voltage value that power cord provides, but, first voltage
The voltage value of signal is not equal to the voltage value of second voltage signal, and equal non-zero.
Data transmission method for uplink provided in this embodiment, the voltage value of voltage signal that data to be sent are used when sending are equal
Non-zero, in the prior art when sending data by the way that voltage value is pulled low to zero compared with, on the one hand, pass through the electricity sent
Pressure signal can realize the continued power to data sink, on the other hand, can improve the efficiency of data transmission, reduce number
According to taking for transmission.
In addition, when using data transmission method for uplink transmission data provided in this embodiment, it is used to implement data and sends pin
Power cord is connected with, so as to both realize the hair powered while also achieve data to data sending device on single line
It send.
As the optional realization method of the present embodiment, data transmission method for uplink provided in this embodiment, which may be used, to be implemented as follows
The scheme provided in example is realized：
Embodiment 2
The present embodiment provides a kind of data transmission circuits, can realize above-mentioned data transmission method for uplink, as shown in Fig. 2, including：
For provide the first DC voltage the first power supply interface, for provide the second DC voltage second power supply connect
Mouth, transmission interface, main control chip, transformer T1, current limliting module, the first capacitance C1 and switch module；
The first end (1 foot of T1) of the primary coil of the transformer T1 is respectively connected to the first end of the current limliting module
With the first end of the first capacitance C1, the second end of the second end of the current limliting module and the first capacitance C1 are connected to
First power supply interface, the second end (2 feet of T1) of the primary coil of the transformer T1 are connected to the switch module
Input terminal, the first end (3 feet of T1) of the secondary coil of the transformer T1 are connected to second power supply interface, the transformation
The second end (4 feet of T1) of the secondary coil of device T1 is connected to the transmission interface；
The output terminal ground connection GND of the switch module, the control terminal of the switch module are connected to the main control chip；
The main control chip, for when the data transmission circuit is to the transmission interface transmission data signal, to institute
The control terminal for stating switch module sends control signal；
The switch module, it is described for when receiving the control signal that the main control chip is sent, being switched on or switched off
Circuit pathways between the input terminal and output terminal of switch module.
As a kind of optional realization method of the present embodiment, the transmission interface can specifically include the first pin and second
Pin, the second end (4 feet of T1) of the secondary coil of the transformer T1 are connected to a kind of specific implementation of the transmission interface
For：The second end (4 feet of T1) of the secondary coil of the transformer T1 is connected to the first pin of the transmission interface.The hair
The second pin of interface is sent for being grounded.
In data transmission circuit provided in this embodiment, when switch module disconnects input terminal and the output of the switch module
During circuit pathways between end, the primary coil no current of transformer passes through, and the signal that transmission interface is sent out at this time is straight for first
Galvanic electricity presses corresponding signal, when switch module connects the circuit pathways between the input terminal and output terminal of the switch module,
The primary coil of transformer generates electric current, and then transformer to circuit pathways are formed between ground level in the primary coil of transformer
Secondary coil in also generate electric current, at this point, the signal that the secondary coil of transformer generates will be generated with the second DC voltage
Signal couple, formed different from the first DC voltage signal (this be different from the first DC voltage signal voltage value it is non-
Zero), main control chip sends corresponding control signal according to transmitted data, controls the closure or openness of switch module, and then
Alternately the corresponding signal of the first DC voltage and the signal different from the first DC voltage are sent out, that is, in number in transmission interface
During according to sending, transmission interface uses ac signal transmission data, for example, sending number using the corresponding signal of the first DC voltage
According to 1, using the signal transmission data 0 different from the first DC voltage；Or it is sent using the corresponding signal of the first DC voltage
Data 0, using the signal transmission data 1 different from the first DC voltage.New types of data transmission circuit provided in this embodiment, can
Stability and quality during ensureing that signal is sent.
In the present embodiment, due to transmission interface alternately the corresponding signal of the first DC voltage that sends out and different from first it is straight
The equal non-zero of voltage value of the signal of galvanic electricity pressure, that is, the equal non-zero of the voltage value of data-signal that transmission interface is sent out, with existing skill
It is compared in art in transmission data signal by the way that voltage value is pulled low to zero, on the one hand, can by the data-signal sent
To realize the continued power to receiving end device, on the other hand, the efficiency of data-signal transmission can be improved.
As a kind of optional realization method of the present embodiment, the signal that the secondary coil of transformer generates will be with the second direct current
The signal coupling that voltage generates, forms the signal different from the first DC voltage, can be formed higher than the first DC voltage
Signal or the signal for being less than the first DC voltage, demand can accordingly be set, herein not according to the difference of the application
It is restricted.
As a kind of optional realization method of the present embodiment, the main control chip is sent out to the control terminal of the switch module
Send control signal；For example, a kind of letter in high level and low level can be maintained under default conditions, at the control terminal of switch module
Number, switch module to be maintained to be in opening, circuit pathways disconnect at this time, when needing closure switch to connect circuit pathways
When, the control signal of transmission is another signal in high level and low level, and high level closure switch specifically may be used also
It is low level closure switch, the component type used when being realized according to switch module determines that this is not restricted.
As a kind of optional realization method of the present embodiment, above-mentioned data transmission circuit can be applied to middle Distance Transmission,
For example, a kind of illustrative application scenarios：Electronic equipment equipped with wireless card reader, the electronic equipment are sent equipped with above-mentioned data
Circuit, the scene separated by a distance for reading card image；It is, of course, also possible to applied in short range transmission, for example, electronics is set
Standby to be equipped with above-mentioned data transmission circuit and have two line communication interfaces, this is crossed two lines and leads between two such electronic equipments
The scene that letter interface carries out data transmission.This is not restricted.
As a kind of optional realization method of the present embodiment, as shown in figure 3, being supplied for providing the first of the first DC voltage
Electrical interface can be specifically the first power supply interface for being connected to DC power supply VCC；For providing the of the second DC voltage
Two power supply interfaces can be specifically the second power supply interface for being connected to chip operating voltage VDD.
As a kind of optional realization method of the present embodiment, voltage can be more than the second power supply interface at the first power supply interface
Locate voltage, can realize and amplify the signal of transmission, so as to fulfill the transmission of medium and long distance signal.For example, the first power supply interface
Place's voltage is 12v, and voltage is 5v at the second power supply interface.Certainly, according to the needs of practical application, voltage at the first power supply interface
Voltage at the second power supply interface can also be equal to or less than.
As a kind of optional realization method of the present embodiment, another schematic diagram of data transmission circuit as shown in Figure 3.
The current limliting module includes first resistor R1, for playing current-limiting protection when circuit forms access, avoids the effect of short circuit.It should
When first resistor is realized, a resistance or multiple parallel resistances or multiple series resistances can be included, this is not restricted.
As a kind of optional realization method of the present embodiment, another schematic diagram of data transmission circuit as shown in Figure 3.
The switch module includes metal-oxide-semiconductor Q1 or triode.For example, when switch module uses NMOS tube, the drain D pole of the NMOS tube is made
For the input terminal of the switch module, the output terminal of the source S pole of the NMOS tube as the switch module, the grid of the NMOS tube
Control terminal of the pole G poles as the switch module；For another example, when switch module uses PMOS tube, the source S pole conduct of the PMOS tube
The input terminal of the switch module, the output terminal of the drain D pole of the NMOS tube as the switch module, the grid of the NMOS tube
Control terminal of the G poles as the switch module；For another example, the switch module other can also can be realized open using triode etc.
The component of function is closed, is not limited herein.
As a kind of optional realization method of the present embodiment, in the first end and second end of the primary coil of the transformer
Between be also associated with burr filtering module, such as diode, for the burr signal generated in filtering circuit.Certainly, in circuit
During middle current signal stable, which can not also be set.
As a kind of optional realization method of the present embodiment, in the first end and second end of the secondary coil of the transformer
Between be connected with filter module, for example, inductance, resistance, diode or inductance, resistance and diode these three components are simultaneously
Connection etc..For the burr signal generated in filtering circuit.Certainly, in circuit current signal stable when, this can not also be set
Burr filtering module.
Embodiment 3
The present embodiment provides a kind of data transmission circuits, can realize above-mentioned data transmission method for uplink, as shown in figure 4, including：
For provide the first DC voltage the first power supply interface, for provide the second DC voltage second power supply connect
Mouth, transmission interface, main control chip, transformer T1, current limliting module, the first capacitance C1 and switch module；
The first end (1 foot of T1) of the primary coil of the transformer T1 is connected to first power supply interface, the change
The second end (2 feet of T1) of the primary coil of depressor T1 is respectively connected to the first end of the current limliting module and first capacitance
The first end of C1, the first end (3 feet of T1) of the secondary coil of the transformer T1 is connected to second power supply interface, described
The second end (4 feet of T1) of the secondary coil of transformer T1 is connected to the transmission interface；
The second end of the current limliting module and the second end of the first capacitance C1 are connected to the defeated of the switch module
Enter end；
The output terminal ground connection GND of the switch module, the control terminal of the switch module are connected to the main control chip；
The main control chip, for when the data transmission circuit is to the transmission interface transmission data signal, to institute
The control terminal for stating switch module sends control signal；
The switch module, it is described for when receiving the control signal that the main control chip is sent, being switched on or switched off
Circuit pathways between the input terminal and output terminal of switch module.
As a kind of optional realization method of the present embodiment, the transmission interface can specifically include the first pin and second
Pin, the second end (4 feet of T1) of the secondary coil of the transformer T1 are connected to a kind of specific implementation of the transmission interface
For：The second end (4 feet of T1) of the secondary coil of the transformer T1 is connected to the first pin of the transmission interface.The hair
The second pin of interface is sent for being grounded.
In data transmission circuit provided in this embodiment, when switch module disconnects input terminal and the output of the switch module
During circuit pathways between end, the primary coil no current of transformer passes through, and the signal that transmission interface is sent out at this time is straight for first
Galvanic electricity presses corresponding signal, when switch module connects the circuit pathways between the input terminal and output terminal of the switch module,
The primary coil of transformer generates electric current, and then transformer to circuit pathways are formed between ground level in the primary coil of transformer
Secondary coil in also generate electric current, at this point, the signal that the secondary coil of transformer generates will be generated with the second DC voltage
Signal couple, formed different from the first DC voltage signal (this be different from the first DC voltage signal voltage value it is non-
Zero), main control chip sends corresponding control signal according to transmitted data, controls the closure or openness of switch module, and then
Alternately the corresponding signal of the first DC voltage and the signal different from the first DC voltage are sent out, that is, in number in transmission interface
During according to sending, transmission interface uses ac signal transmission data, for example, sending number using the corresponding signal of the first DC voltage
According to 1, using the signal transmission data 0 different from the first DC voltage；Or it is sent using the corresponding signal of the first DC voltage
Data 0, using the signal transmission data 1 different from the first DC voltage.New types of data transmission circuit provided in this embodiment, can
Stability and quality during ensureing that signal is sent.
In the present embodiment, due to transmission interface alternately the corresponding signal of the first DC voltage that sends out and different from first it is straight
The equal non-zero of voltage value of the signal of galvanic electricity pressure, that is, the equal non-zero of the voltage value of data-signal that transmission interface is sent out, with existing skill
It is compared in art in transmission data signal by the way that voltage value is pulled low to zero, on the one hand, can by the data-signal sent
To realize the continued power to receiving end device, on the other hand, the efficiency of data-signal transmission can be improved.
As a kind of optional realization method of the present embodiment, the signal that the secondary coil of transformer generates will be with the second direct current
The signal coupling that voltage generates, forms the signal different from the first DC voltage, can be formed higher than the first DC voltage
Signal or the signal for being less than the first DC voltage, demand can accordingly be set, herein not according to the difference of the application
It is restricted.
As a kind of optional realization method of the present embodiment, the main control chip is sent out to the control terminal of the switch module
Send control signal；For example, a kind of letter in high level and low level can be maintained under default conditions, at the control terminal of switch module
Number, switch module to be maintained to be in opening, circuit pathways disconnect at this time, when needing closure switch to connect circuit pathways
When, the control signal of transmission is another signal in high level and low level, and high level closure switch specifically may be used also
It is low level closure switch, the component type used when being realized according to switch module determines that this is not restricted.
As a kind of optional realization method of the present embodiment, above-mentioned data transmission circuit can be applied to middle Distance Transmission,
For example, a kind of illustrative application scenarios：Electronic equipment equipped with wireless card reader, the electronic equipment are sent equipped with above-mentioned data
Circuit, the scene separated by a distance for reading card image；It is, of course, also possible to applied in short range transmission, for example, electronics is set
Standby to be equipped with above-mentioned data transmission circuit and have two line communication interfaces, this is crossed two lines and leads between two such electronic equipments
The scene that letter interface carries out data transmission.This is not restricted.
As a kind of optional realization method of the present embodiment, as shown in figure 5, being supplied for providing the first of the first DC voltage
Electrical interface can be specifically the first power supply interface for being connected to DC power supply VCC；For providing the of the second DC voltage
Two power supply interfaces can be specifically the second power supply interface for being connected to chip operating voltage VDD.
As a kind of optional realization method of the present embodiment, voltage can be more than the second power supply interface at the first power supply interface
Locate voltage, can realize and amplify the signal of transmission, so as to fulfill the transmission of medium and long distance signal.For example, the first power supply interface
Place's voltage is 12v, and voltage is 5v at the second power supply interface.Certainly, according to the needs of practical application, voltage at the first power supply interface
Voltage at the second power supply interface can also be equal to or less than.
As a kind of optional realization method of the present embodiment, another schematic diagram of data transmission circuit as shown in Figure 5.
The current limliting module includes first resistor R1, for playing current-limiting protection when circuit forms access, avoids the effect of short circuit.It should
When first resistor is realized, a resistance or multiple parallel resistances or multiple series resistances can be included, this is not restricted.
As a kind of optional realization method of the present embodiment, another schematic diagram of data transmission circuit as shown in Figure 5.
The switch module includes metal-oxide-semiconductor Q1 or triode.For example, when switch module uses NMOS tube, the drain D pole of the NMOS tube is made
For the input terminal of the switch module, the output terminal of the source S pole of the NMOS tube as the switch module, the grid of the NMOS tube
Control terminal of the pole G poles as the switch module；For another example, when switch module uses PMOS tube, the source S pole conduct of the PMOS tube
The input terminal of the switch module, the output terminal of the drain D pole of the NMOS tube as the switch module, the grid of the NMOS tube
Control terminal of the G poles as the switch module；For another example, the switch module other can also can be realized open using triode etc.
The component of function is closed, is not limited herein.
As a kind of optional realization method of the present embodiment, in the first end and second end of the primary coil of the transformer
Between be also associated with burr filtering module, such as diode, for the burr signal generated in filtering circuit.Certainly, in circuit
During middle current signal stable, which can not also be set.
As a kind of optional realization method of the present embodiment, in the first end and second end of the secondary coil of the transformer
Between be connected with filter module, for example, inductance, resistance, diode or inductance, resistance and diode these three components are simultaneously
Connection etc..For the burr signal generated in filtering circuit.Certainly, in circuit current signal stable when, this can not also be set
Burr filtering module.
Embodiment 4
A kind of data communications equipment is present embodiments provided, which is main equipment, and above-mentioned number may be used
According to sending method transmission data.As shown in fig. 6, the data communications equipment includes：The power supply interface being connect with DC power supply
100th, wired communication interface 110, main control chip 130, energy storage component 140；
The wired communication interface 110 is made of the first communication communication sub-interface 112 of sub-interface 111 and second；
The power supply interface 100 communicates sub-interface 111 with the first end of the energy storage component 140 and described first respectively
Electrical connection；
The first communication sub-interface 111 is electrically connected with the first end of the energy storage component 140；
The second communication sub-interface 112 is electrically connected with the ground terminal GND_M of the data communications equipment；
The main control chip 130 includes control port, and the control port and the second end of the energy storage component 140 are electrically connected
It connects；
The main control chip 130, for the data communications equipment send low level signal when, from the control port
Export the first signal；
The energy storage component 140, under the control of first signal, by the first end of the energy storage component 140
Voltage be set to first voltage, wherein, the first voltage is less than the voltage value at the power supply interface 100 and more than zero.
Wherein, the wired communication interface 110 is made of the first communication sub-interface and the second communicator interface.Since this has
Line communication interface is made of two interfaces, thus, which is also referred to as two line communication interfaces
In the present embodiment, since the first communication sub-interface of the data communications equipment is electrically connected with power supply interface, do not having
When low level signal transmits, the level of the first communicator interface can maintain the voltage value at power supply interface.In the number
When sending low level signal according to communication equipment, main control chip exports the first signal from the control port, and energy storage component is described
Under the control of first signal, the voltage of the first end of the energy storage component is set to first voltage, since the first voltage is low
Voltage value at the power supply interface and more than zero so that the level of the first communicator interface reduces to generate level change
Change, and then realize that data are sent by the level change of the first communicator interface.Rather than use scheme of the prior art
The level ground connection of sending port is dropped to zero, to realize that data are sent.
In a kind of optional embodiment of the present embodiment, the power supply interface 100 can also be with the power supply of main control chip 130
Port is electrically connected, and is used to implement the power supply to main control chip 130.Certainly, which can also communicate with the data
The supply port electrical connection of other load elements in equipment, to realize the power supply to other load elements in data communications equipment.
As shown in fig. 7, energy storage component can be capacitance (C1 shown in Fig. 7).The first end of the energy storage component respectively with confession
(1 mouthful in label 110 shown in Fig. 7 connects for the first communicator for electrical interface (V_MPWR shown in Fig. 7), the first communication sub-interface
Mouthful, 7 mouthfuls in label 110 are the second communication sub-interface) it is electrically connected, second end is electrically connected with the control port of main control chip 130.
In the present embodiment, the main control chip is additionally operable to when the data communications equipment sends high level signal, from institute
State control port output second signal.
In the present embodiment, first signal is less than the level signal of second voltage for voltage value, wherein, second electricity
Pressure is less than the voltage value at the power supply interface；The second signal is the level signal that voltage value is the second voltage.
When the data communications equipment sends high level signal, since the first end of energy storage component can maintain power supply
The voltage that interface provides so that the level of the first communication sub-interface is also maintained at high level signal, which is power supply
The voltage signal that interface provides.The control port output second signal of main control chip so that the electricity of the second end of the energy storage component
Flat size maintains second voltage, and the second signal is the level signal that voltage value is the second voltage, the second voltage
Less than the voltage value at power supply interface, for example, voltage is 5v at power supply interface, second voltage can be 3v.In the present embodiment, the
Binary signal is act as：The pressure difference at energy storage component both ends is allowd to maintain the difference of voltage and second voltage at power supply interface
Value, when needing to send low level signal next time, when the control port output of main control chip is less than the first signal of second voltage,
The pressure difference increase at energy storage component both ends so that capacitance momentary charge, according to the characteristic of capacitance separated by direct communication, the first of energy storage component
End level moment is pulled low so that the level of the first communication sub-interface is pulled low, to realize the transmission of low level signal.
Embodiment 5
The present embodiment provides a kind of data communications equipment, which can be used as main equipment, may be used
State data illegal methods transmission data.The data communications equipment that the present embodiment and embodiment 4 provide difference lies in：Embodiment 4
Middle second signal is provided by the control port of main control chip, and in the present embodiment, second signal is provided by voltage generation circuit.
In the present embodiment, as shown in figure 8, the equipment further includes：Voltage generation circuit 160；First signal is electricity
Pressure value is less than the level signal of second voltage, wherein, the second voltage is less than the voltage value at the power supply interface；The electricity
The input terminal of pressure generation circuit 160 is electrically connected with the power supply interface 100, the output terminal of the voltage generation circuit 160 and institute
The second end electrical connection of energy storage component 140 is stated, the voltage generation circuit 160 is the second voltage for output voltage values
Level signal to the energy storage component second end.
As shown in figure 9, energy storage component can be capacitance (C1 shown in Fig. 9).The first end of the energy storage component respectively with confession
Electrical interface 100, first communicate sub-interface (1 mouthful in label 110 shown in Fig. 9 is the first communication sub-interface, 2 in label 110
Mouth is the second communication sub-interface) it is electrically connected, second end is electrically connected with the output terminal of voltage generation circuit.
One optional embodiment of the embodiment of the present invention, as shown in figure 9, the voltage generation circuit includes the first partial pressure
Component (R7 shown in Fig. 9) and the second partial pressure component (R8 shown in Fig. 9), the first end of the first partial pressure component is the electricity
The input terminal of generation circuit is pressed, the second end of the first partial pressure component is electrically connected with the first end of the described second partial pressure component,
The tie point of the first partial pressure component and the second partial pressure component is the output terminal of the voltage generation circuit, and described second divides
The second end of component is connect with the ground terminal electricity GND_M；
Wherein, the first partial pressure component and the second partial pressure component can be resistance, set the first partial pressure component in the host
With the second partial pressure component, by adjusting the resistance value size of the first partial pressure component and the second partial pressure component, voltage can be generated electricity
The voltage (voltage that i.e. power supply provides) of road access is adjusted to the level signal (second signal) of second voltage, in order to carry
Supply the second end of energy storage component.
When the data communications equipment sends high level signal, since the first end of energy storage component can maintain power supply
The voltage that interface provides so that the level of the first communication sub-interface is also maintained at high level signal, which is power supply
The voltage signal that interface provides.Voltage generation circuit provides second signal so that the level of the second end of the energy storage component
Second voltage is maintained, the second signal is the level signal that voltage value is the second voltage, and the second voltage is less than confession
Voltage value at electrical interface, for example, voltage is 5v at power supply interface, second voltage can be 3v.In the present embodiment, second signal
Act as：The pressure difference at energy storage component both ends is allowd to maintain the difference of voltage and second voltage at power supply interface, instantly
It is secondary need send low level signal when, main control chip control port output less than second voltage the first signal when, energy storage group
The pressure difference increase at part both ends so that capacitance momentary charge, according to the characteristic of capacitance separated by direct communication, the first end level of energy storage component
Moment is pulled low so that the level of the first communication sub-interface is pulled low, to realize the transmission of low level signal.
When the data communications equipment sends low level signal, the control port of main control chip exports the first signal, institute
The level signal that the first signal is less than second voltage for voltage value is stated, such as second voltage is 3v, the voltage value of the first signal can
Think 2v either 1v or 0v etc., the pressure difference increase at capacitance both ends so that capacitance momentary charge, according to capacitance separated by direct communication
Characteristic, the first end level moment of capacitance are pulled low so that the level of the first communication sub-interface is pulled low, and is become so as to generate level
Change the transmission for realizing data.By the capacitance, the level of the first communicator interface can be controlled to drop to first voltage, this
One voltage is non-zero voltage value, so as to fulfill the transmission of data rather than using scheme of the prior art by sending port
Level ground connection drops to zero, to realize that data are sent.
Embodiment 6
The present embodiment provides a kind of data communications equipment, which is slave device, and above-mentioned data may be used
Sending method transmission data.
As shown in Figure 10, data communications equipment includes：Wired communication interface 210, main control chip 230, energy storage component 240；
The wired communication interface 210 is made of the first communication communication sub-interface 212 of sub-interface 211 and second, described to have
Line communication interface 210 powers to the data communications equipment by the external equipment for being connect with external equipment；
The first communication sub-interface 211 is electrically connected with the first end of the energy storage component 240；
The second communication sub-interface 212 is electrically connected with the ground terminal GND_S of the data communications equipment；
The main control chip 230 includes control port, and the control port and the second end of the energy storage component 240 are electrically connected
It connects；
The main control chip 230, for the data communications equipment send low level signal when, from the control port
Export the first signal；
The energy storage component 240, under the control of first signal, by the first end of the energy storage component 240
Voltage be set to first voltage, wherein, the first voltage less than the external equipment provide supply voltage voltage value and
More than zero.
External equipment in the present embodiment is main equipment.
Wherein, the wired communication interface 210 is made of the first communication sub-interface and the second communicator interface.Since this has
Line communication interface 210 is made of two interfaces, thus, which is also referred to as two line communication interfaces.
For data communications equipment as slave device, which can obtain supply voltage from main equipment, main in the present embodiment
When not having low level signal transmission between equipment and slave device, the voltage of the first end of energy storage component can maintain external equipment
The voltage value of the supply voltage of offer.When the slave device sends low level signal, main control chip is defeated from the control port
Go out the first signal, energy storage component is set under the control of first signal, by the voltage of the first end of the energy storage component
One voltage, due to voltage value of the first voltage less than the supply voltage that external equipment provides and more than zero so that first is logical
Level at letter sub-interface reduces to generate level change, and then carries out data by the level change of the first communicator interface
It sends.Rather than the level ground connection of sending port is dropped to zero using scheme of the prior art, to realize that data are sent.
In a kind of optional embodiment of the present embodiment, the supply port of the first communication sub-interface and main control chip is electrically connected
It connects, is used to implement the power supply to main control chip.The first communication sub-interface can also be loaded with other in data communications equipment
The supply port electrical connection of element, is used to implement the power supply to other load elements in data communications equipment.Optionally, described
Stabipack is additionally provided between one communication sub-interface and the supply port of main control chip, it is unstable in the supply voltage of external equipment
When, for eliminating voltage oscillation, export burning voltage.The stabipack can be capacitance, the capacitance one end respectively with it is described
The ground terminal of the supply port electrical connection of the first communication sub-interface, main control chip, the other end and data communications equipment is electrically connected
It connects.
In a kind of optional embodiment of the present embodiment, power supply can also be set in the data communications equipment, it should
Power supply is electrically connected with the charging port of other load elements in main control chip 230, data communications equipment, in order to realize pair
The power supply of main control chip 230 and other load elements.
In a kind of optional embodiment of the present embodiment, as shown in figure 11, energy storage component can be capacitance (referring in Figure 11
C1).The first end of the energy storage component is electrically connected with the first communication sub-interface, and the control port of second end and main control chip is electrically connected
It connects.
In the present embodiment, the main control chip is additionally operable to when the data communications equipment sends high level signal, from institute
Control port output second signal is stated, wherein, the second signal is the level signal that voltage value is the second voltage.
In the present embodiment, first signal is less than the level signal of second voltage for voltage value, wherein, second electricity
Pressure is less than the voltage value that the described first communication sub-interface obtains at the wired communication interface of external equipment；
When the data communications equipment sends high level signal, since the first end of energy storage component can maintain outside
The supply voltage that equipment provides so that the level of the first communication sub-interface is also maintained at high level signal, which is
The supply voltage signal that external equipment provides.The control port output second signal of main control chip so that the second end of the capacitance
Level maintain second voltage, the second signal is the level signal that voltage value is the second voltage, this second
Voltage is less than the voltage value for the supply voltage that external equipment provides, for example, the voltage value for the supply voltage that external equipment provides is
5v, second voltage can be 3v.In the present embodiment, second signal is act as：The pressure difference at energy storage component both ends is tieed up
The difference of the supply voltage provided in external equipment and second voltage is provided, when needing to send low level signal next time, master control core
When the control port output of piece is less than the first signal of second voltage, the pressure difference increase at energy storage component both ends so that capacitance moment
Charging, according to the characteristic of capacitance separated by direct communication, the first end level moment of energy storage component is pulled low so that the first communication sub-interface
Level be pulled low, to realize the transmission of low level signal.
When the data communications equipment sends low level signal, the control port of main control chip exports the first signal, institute
The level signal that the first signal is less than second voltage for voltage value is stated, such as second voltage is 3v, the voltage value of the first signal can
Think 2v either 1v or 0v etc., the pressure difference increase at capacitance both ends so that capacitance momentary charge, according to capacitance separated by direct communication
Characteristic, the first end level moment of capacitance are pulled low so that the level of the first communication sub-interface is pulled low, and is become so as to generate level
Change the transmission for realizing data.By the capacitance, the level of the first communicator interface can be controlled to drop to first voltage, this
One voltage is non-zero voltage value, so as to fulfill the transmission of data rather than using scheme of the prior art by sending port
Level ground connection drops to zero, to realize that data are sent.
Embodiment 7
The present embodiment provides a kind of data communications equipment, which is slave device.The present embodiment and embodiment 6
Be distinguished as：Second signal is provided by the control port of main control chip in embodiment 6, and in the present embodiment, second signal by
Voltage generation circuit provides.
In the present embodiment, as shown in figure 12, the slave device further includes：Voltage generation circuit 260；The voltage generates electricity
The input terminal on road 260 with described first communication sub-interface 211 be electrically connected, the output terminal of the voltage generation circuit 260 with it is described
The second end electrical connection of energy storage component 240, the voltage generation circuit 260 is for electricity of the output voltage values for the second voltage
The second end of the ordinary mail number extremely energy storage component 240.In the present embodiment, first signal is voltage value less than second voltage
Level signal, wherein, the second voltage is less than the supply voltage that external equipment provides；
In a kind of optional embodiment of the present embodiment, as shown in figure 13, energy storage component can be capacitance (referring to Figure 13's
C1).The first end of the energy storage component is electrically connected, second end with the first communication sub-interface (referring to 1 mouthful in the label 210 of Figure 13)
It is electrically connected with the control port of main control chip.
In a kind of optional embodiment of the present embodiment, a kind of realization method that control port exports the first signal can be with
For：It is exported by generating the first signal inside main control chip, and by control port；Optionally, control port exports the first signal
Another realization method be：Control port is switched on-off by control, the second end of energy storage component to be controlled to be grounded so that
The first signal is generated at control port.At this point, the equipment further includes：Switch module (not shown)；The control port, specifically
It is electrically connected by the switch module with the second end of the energy storage component, the switch module is also electrically connected with the ground terminal
It connects, the control port, specifically for when the data communications equipment sends low level signal, the energy storage component is connected
Access between second end and the ground terminal.
One optional embodiment of the embodiment of the present invention, as shown in figure 13, the voltage generation circuit include first point
Component (R7 shown in Figure 13) and the second partial pressure component (R8 shown in Figure 13) are pressed, the first end of the first partial pressure component is institute
The input terminal of voltage generation circuit is stated, the second end of the first partial pressure component and the first end of the described second partial pressure component are electrically connected
It connects, the first partial pressure component and the output terminal that the second tie point for dividing component is the voltage generation circuit, described second
The second end of partial pressure component is electrically connected with the ground terminal GND_M；
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in combine in an appropriate manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, substitutions and variations to the above described embodiments within the scope of the invention.The scope of the present invention
By appended scheme and its equivalent limit.
Claims (1)
1. a kind of data transmission method for uplink, which is characterized in that using the data transmission method for uplink transmission data communication interface have and
Only there are two communications pins, a pin ground connection in described two communications pins, another pin is for data pin for sending
Data-signal, the data pin are respectively connected to the power supply interface of power cord and the first end of voltage regulator module, the side
Method includes：
Main control chip obtains data to be sent；
The main control chip generate control Signal-controlled switch module be switched on or switched off the second end of the voltage regulator module with
The circuit pathways of ground terminal represent described pending to adjust to be alternately produced at the data pin by the voltage regulator module
The first voltage signal of bit 0 in data and the second voltage signal of bit 1 are sent, wherein, the voltage of the first voltage signal
Voltage value of the value not equal to the second voltage signal and equal non-zero.
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| CN201711250260.4A CN108233957B (en) | 2017-12-01 | 2017-12-01 | Data transmitting method |
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