CN109951195A - A kind of electronic equipment, signal modulation transmitting device and its signal modulation transmission circuit - Google Patents
A kind of electronic equipment, signal modulation transmitting device and its signal modulation transmission circuit Download PDFInfo
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Abstract
The present disclosure proposes a kind of electronic equipment, modulated signal transmitting device and its signal modulation transmission circuits, the signal modulation transmission circuit exports modulated signal to signal control module in main control module, and the feedback signal of slave is received, and corresponding switch control signal is exported to signal control module according to the feedback signal；Signal control module generates multichannel signal to be modulated according to modulated signal, and after being modulated according to multichannel signal control signal modulation module to be modulated to corresponding signal to be modulated under the action of switch control signal, the modulated signal to be modulated is sent to slave by the power supply line between host and slave, it realizes while can be communicated between host equipment and slave devices, used circuit structure is simple, at low cost, and the multiplexing of communication power supply line so that installation wiring it is simple, communication distance is unrestricted, strong antijamming capability and easily miniaturization.
Description
Technical field
This disclosure relates to signal modulation technique field more particularly to a kind of electronic equipment, signal modulation transmitting device and its
Signal modulation transmission circuit.
Background technique
With the progress of science and technology, applied to the host equipment and multiple slaves in each power domain such as security protection, fire-fighting
Communication between equipment becomes the most important thing of modern communications technology.Currently, to solve the above-mentioned problems, the prior art is main
By power supply line and connection being kept apart, and in host equipment and slave when host equipment and slave devices are communicated
Increase signal conversion circuit between equipment, after being converted signal by signal conversion circuit, is sent to by connection
Slave devices.
However, although the above method makes host equipment and slave devices that can carry out effective communication, due to its needs
Increase signal conversion circuit between host equipment and slave devices, it so will be so that circuit design becomes complicated, circuit peripheral
Device increases, and improves circuit cost；In addition, power supply line and connection are isolated so that need more wire rods, so not only mention
High manufacturing cost, and install that wiring is complicated and communication distance is limited, poor anti jamming capability and is not easy to minimize.
In conclusion there are circuit structure complexity and costs for the communication apparatus between existing host equipment and slave devices
Height installs limited wiring complexity, communication distance, poor anti jamming capability and is not easy the problem of minimizing.
Summary of the invention
The disclosure is designed to provide a kind of electronic equipment, signal modulation transmitting device and its signal modulation transmission electricity
Road, complex and costly, installation that there are circuit structures to solve the communication apparatus between existing host equipment and slave devices
Wiring is complicated, communication distance is limited, poor anti jamming capability and is not easy the problem of minimizing.
The disclosure is achieved in that disclosure first aspect provides a kind of signal modulation transmission circuit, for host and
Communication between multiple slaves, which is characterized in that the signal modulation transmission circuit is arranged in the host, the signal tune
Transmission circuit processed includes:
Main control module, signal control module, power supply module and signal modulation module；
The main control module is connect with the power supply module, the signal control module and multiple slaves,
The signal control module is connect with the signal modulation module, and the signal modulation module is connect with multiple slaves；
The power supply module receives supply voltage, and provides work to the main control module according to the supply voltage
Voltage；The main control module exports modulated signal to the signal control module, and receives the feedback signal of slave, and according to this
Feedback signal exports corresponding switch control signal to the signal control module；The signal control module is according to the modulation
Signal generates multichannel signal to be modulated, and is controlled under the action of the switch control signal according to multichannel signal to be modulated
After the signal modulation module is modulated corresponding signal to be modulated, by the power supply line between host and slave by the tune
Signal to be modulated after system is sent to slave.
Disclosure second aspect provides a kind of signal modulation transmitting device, and the signal modulation transmitting device includes first party
Signal modulation transmission circuit described in face.
The disclosure third aspect provides a kind of electronic equipment, and the electronic equipment includes signal modulation described in second aspect
Transmitting device.
The present disclosure proposes a kind of electronic equipment, signal modulation transmitting device and its signal modulation transmission circuit, the signals
Modulation transmissions circuit exports modulated signal to signal control module in main control module, and receives the feedback signal of slave, and according to
The feedback signal exports corresponding switch control signal to signal control module；Signal control module generates more according to modulated signal
Road signal to be modulated, and under the action of switch control signal according to multichannel signal control signal modulation module to be modulated to corresponding
Signal to be modulated be modulated after, the modulated signal to be modulated is sent to by the power supply line between host and slave
Slave realizes while can be communicated between host equipment and slave devices, and used circuit structure is simple, cost
It is low, and the multiplexing of communication power supply line, so that installation wiring is simple, communication distance is unrestricted, strong antijamming capability and easily small
Type.
Detailed description of the invention
It, below will be to embodiment or description of the prior art in order to illustrate more clearly of the technical solution in the embodiment of the present disclosure
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the disclosure
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram for signal modulation transmission circuit that one embodiment of the disclosure provides；
Fig. 2 is a kind of structural schematic diagram for signal modulation transmission circuit that another embodiment of the disclosure provides；
Fig. 3 is a kind of structural schematic diagram for signal modulation transmission circuit that the another embodiment of the disclosure provides；
Fig. 4 is a kind of electrical block diagram for signal modulation transmission circuit that a kind of embodiment of the disclosure provides；
Fig. 5 is a kind of working timing figure for signal modulation transmission circuit that a kind of embodiment of the disclosure provides.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the disclosure are more clearly understood
The disclosure is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the disclosure, and
It is not used in the restriction disclosure.
Further, in being described below, for illustration and not for limitation, such as particular system structure, skill are proposed
The detail of art etc, to understand thoroughly the embodiment of the present disclosure.However, it will be clear to one skilled in the art that not having
Have and the disclosure also may be implemented in the other embodiments of these details.In other situations, it omits to well-known system
The detailed description of system, apparatus, circuit and method, in case unnecessary details interferes the description of the disclosure.
Below in conjunction with the attached drawing in the embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is carried out clear, complete
Site preparation description, it is clear that described embodiment is disclosure a part of the embodiment, instead of all the embodiments.Based on this public affairs
Embodiment in opening, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example belongs to the range of disclosure protection.
In order to illustrate the technical solution of the disclosure, the following is a description of specific embodiments.
The embodiment of the present disclosure provides a kind of signal modulation transmission circuit 1, as shown in Figure 1, the signal modulation transmission circuit 1 is used
Communication between host 2 and multiple slaves 3, and the signal modulation transmission circuit 1 is arranged in host 2.The signal modulation
Transmission circuit 1 includes main control module 10, signal control module 11, power supply module 12 and signal modulation module 13.
Wherein, main control module 10 is connect with power supply module 2, signal control module 11 and multiple slaves 3, signal control
Molding block 11 is connect with signal modulation module 13, and signal modulation module 13 is connect with multiple slaves 3.
Specifically, power supply module 12 receive supply voltage VDD-POWER, and according to supply voltage VDD-POWER to
Main control module 10 provides operating voltage；Main control module 10 exports modulated signal B-SW to signal control module 11, and receives slave 3
Feedback signal, and corresponding switch control signal is exported to signal control module 11 according to the feedback signal；Signal controls mould
Block 11 generates multichannel signal to be modulated according to modulated signal B-SW, and to be modulated according to multichannel under the action of switch control signal
After signal control signal modulation module 13 is modulated corresponding signal to be modulated, pass through the power supply between host 2 and slave 3
The modulated signal to be modulated is sent to slave 3 by line.
It should be noted that in the embodiments of the present disclosure, signal control module waits adjusting according to the multichannel that modulated signal generates
The road signal Zhong Mei processed signal to be modulated and modulated signal belong to same signal.
In the present embodiment, the signal modulation transmission circuit 1 that the embodiment of the present disclosure provides is controlled in main control module to signal
Module exports modulated signal, and receives the feedback signal of slave, and exports corresponding switch control signal according to the feedback signal
To signal control module；Signal control module generates multichannel signal to be modulated according to modulated signal, and in switch control signal
After being modulated according to multichannel signal control signal modulation module to be modulated to corresponding signal to be modulated under effect, pass through host
The modulated signal to be modulated is sent to slave by the power supply line between slave, realize host equipment and slave devices it
Between while can be communicated, used circuit structure is simple, at low cost, and the multiplexing of communication power supply line, so that installation
Wiring is simple, communication distance is unrestricted, strong antijamming capability and easily miniaturization, thus solve existing host equipment and from
That there are circuit structures is complex and costly for communication apparatus between machine equipment, installation wiring is complicated, communication distance is limited, anti-interference
Ability is poor and is not easy the problem of minimizing.
Further, as a kind of embodiment of the disclosure, as shown in Fig. 2, signal modulation module 13 includes protection location
130 with multiple cascade signal modulation units 131 (being illustrated for three in figure).Wherein, first signal modulation list
Member 131 receives reference voltage, the last one signal modulation unit 131 is connect with protection location 130, the protection location 130 and master
Power supply line connection between machine 2 and slave 3, and each signal modulation unit 131 is connect with signal control module 11.
Specifically, signal control module 11 controls at least under the action of switch control signal according to multichannel signal to be modulated
After one signal modulation unit 131 is modulated corresponding signal to be modulated, power supply line is sent to by protection location 130
On, the modulated signal to be modulated is sent to slave 3 by power supply line.
When it is implemented, then signal control module 11 exists when switch control signal is to carry out a multiplication of voltage to modulated signal
Signal to be modulated all the way is selected under the action of switch control signal from multichannel signal to be modulated, and according to selection all the way wait adjust
At least one signal modulation unit 131 of signal control processed carries out a multiplication of voltage modulation to corresponding signal to be modulated；When switch control is believed
Number for modulated signal carry out two multiplication of voltages when, then signal control module 11 is to be modulated from multichannel under the action of switch control signal
Two-way signal to be modulated is selected in signal, and according to the two-way of selection 131 pairs of the signal modulation unit phase of signal control to be modulated two
The signal to be modulated answered carries out two multiplication of voltage modulation；When switch control signal is to carry out three multiplication of voltages to modulated signal, then signal control
Molding block 11 selects three tunnels signal to be modulated under the action of switch control signal from multichannel signal to be modulated, and according to selection
Three tunnels signal control to be modulated, three signal modulation units 131 three multiplication of voltage modulation are carried out to corresponding signal to be modulated, with such
It pushes away, when switch control signal is to carry out n multiplication of voltage to modulated signal, then effect of the signal control module 11 in switch control signal
Under the road n signal to be modulated is selected from multichannel signal to be modulated, and according to the road n of selection n signal modulation of signal control to be modulated
Unit 131 carries out the modulation of n multiplication of voltage to corresponding signal to be modulated.
In the embodiments of the present disclosure, by using the signal modulation module including multiple cascade signal modulation units 131
13, so that signal modulation module 13 can carry out the modulation of different multiplication of voltages to modulated signal, to realize the adjusting of strength of modulating signal,
And then meet the communication need between the slave under different situations.
Further, as a kind of embodiment of the disclosure, as shown in figure 3, each signal modulation unit 131 includes switch
Subelement 131a and the sub- list 131b member of signal modulation.Wherein, switch subelement 131a and signal control module 11 and signal tune
Subunit 131b connection.
Specifically, signal control module 11 selects accordingly from multichannel signal to be modulated under the action of switch control signal
Signal to be modulated, and according to the working condition of Signal-controlled switch subelement 131a to be modulated；Signal modulation subelement 131b
It is treated under the working condition of switch subelement 131a after modulated signal is modulated, power supply is sent to by protection location 130
On line, the modulated signal to be modulated is sent to slave 3 by power supply line.
Further, as a kind of embodiment of the disclosure, as shown in figure 4, switch subelement 131a includes first switch
Element Q3 and first resistor R1.
Wherein, the control terminal of first switching element Q3 is connect with the first end of first resistor R1, first switching element Q3's
Input terminal is connect with signal modulation subelement 131b, and the output end of first switching element Q3 connects altogether with the second end of first resistor R1
Yu Di, and connect with signal control module 11.
When it is implemented, first switching element Q3 is NMOS transistor, the grid of NMOS transistor is first switching element
The control terminal of Q3, the drain electrode of NMOS transistor are the input terminal of first switching element Q3, and the source electrode of NMOS transistor is opened for first
Close the output end of element Q3.
It should be noted that in the embodiments of the present disclosure, first switching element Q3 can also be real using other switch elements
It is existing, such as PMOS transistor, and the selection of first switching element Q3 is then related to signal to be modulated；In addition, the embodiment of the present disclosure
Shown in Fig. 4, be only illustrated by taking three signal modulation units 131 as an example, that is to say, that switch shown in Fig. 4 is single
First 131a is equally for three, and the label of the first switching element and first resistor in second switch subelement 131a
Respectively Q6 and R4, third switch subelement 131a in first switching element and first resistor label be respectively Q9 and
R7。
Further, as a kind of embodiment of the disclosure, as shown in figure 4, signal modulation subelement 131a includes second
Switch element Q1, third switch element Q3, second resistance R2,3rd resistor R3, capacitor C1 and diode D1.
Wherein, the first end of the input terminal and 3rd resistor R3 of the anode of diode D1 and second switch element Q1 is total
It connecing, the second end of 3rd resistor R3 and the control terminal of the control terminal of second switch element Q1 and third switch element Q2 connect altogether,
And with switch subelement 131a connect, the cathode of diode D1 is connect with the first end of capacitor C1, the second end of capacitor C1 and
The output end of second switch element Q1 and the first end of second resistance R2 connect altogether, and the second end and third of the second electricity R2 resistance switch
The input terminal of element Q2 connects, and the output end of third switch element Q2 is connect with switch subelement 131a.
When it is implemented, second switch element Q1 is PMOS transistor, the grid of PMOS transistor is second switch element
The control terminal of Q1, the drain electrode of PMOS transistor are the input terminal of second switch element Q1, and the source electrode of PMOS transistor is opened for second
Close the output end of element Q1；Third switch element Q2 is NMOS transistor, and the grid of NMOS transistor is third switch element Q2
Control terminal, the drain electrode of NMOS transistor is the input terminal of third switch element Q3, and the source electrode of NMOS transistor is that third switchs
The output end of element Q3.
It should be noted that in the embodiments of the present disclosure, second switch element Q1 can also be real using other switch elements
It is existing, such as NMOS transistor, third switch element Q2 can also equally be realized using other switch elements, such as PMOS crystal
Pipe, and the selection of second switch element Q1 and third switch element Q2 then with signal to be modulated and first switching element Q3 phase
It closes；In addition, being only illustrated by taking three signal modulation units 131 as an example in Fig. 4 shown in the embodiment of the present disclosure, that is to say, that
Signal modulation subelement 131b shown in Fig. 4 is equally for three, and in second signal modulation subelement 131b
Second switch element, third switch element, diode and capacitor label be divided into for Q4, Q5, D2 and C2, third signal
The label of second switch element, third switch element, diode and capacitor in modulation subunit 131b be divided into for Q7, Q8,
D3 and C3.
Further, as a kind of embodiment of the disclosure, as shown in figure 4, protection location 130 includes Schottky diode
The anode of D5, Schottky diode D5 are connect with signal modulation unit 131, and the cathode and power supply line of Schottky diode D5 connects
It connects.
The embodiment of the present disclosure is provided by taking Fig. 3 and circuit shown in Fig. 4 and working timing figure shown in fig. 5 as an example below
The concrete operating principle of signal modulation transmission circuit 1 be illustrated, details are as follows:
As shown in figure 3, being output to first by the power supply line when in the modulated signal to power supply line that host 2 issues
Extension set classification 3, then second extension set 3 is sent to by first extension set 3, multiple extension sets are sent to this.First extension set 3 is connecing
When receiving the modulated signal of the transmission of host 2, answer signal will be fed back to host 2, and between first extension set 3 and host 2
When hypertelorism, first extension set 3 will be unable to receive the modulated signal of the transmission of host 2, or when first extension set 3 receives
The modulated signal that host 2 is sent, and when extension set detects that the modulated signal is of poor quality, first extension set 3 will be fed back to host 2 to be adjusted
Signal processed is weak or can not receive modulated signal, and host 2 retransmits after carrying out a multiplication of voltage to modulated signal at this time, if right
After modulated signal carries out a multiplication of voltage, first 3 constant feedback modulated signal of extension set is weak or can not receive modulated signal, at this time
Host 2 will carry out two multiplication of voltages, three multiplication of voltages etc. to modulated signal, can receive until modulated signal until first extension set 3.
Work by taking host 2 carries out three multiplication of voltages to modulated signal as an example to the signal modulation transmission circuit 1 of the disclosure below
Principle is described in detail, specific: when main control module 10 can not receive the answer signal of the feedback of extension set 3, master control at this time
The driving voltage B_SW signal of the output modulation of module 10, i.e. modulated signal B_SW to signal control module 11, while exporting switch
Signal A and B is controlled to signal control module 13.After signal control module 13 receives modulated signal B_SW, by the modulated signal
Tri- tunnel B_SW Fen Wei signal SW0, SW1 and SW2 to be modulated, and detect switch control signal A and B while being high level
When, then signal SW0, SW1 and SW2 output to be modulated of three tunnels is controlled simultaneously；It should be noted that in the embodiments of the present disclosure,
There is no specific limitations for the frequency bandwidth of modulated signal B_SW, and its signal peak value depends on the power supply electricity of power supply
The reference voltage REF1V8 of VDD_POWER and modulation circuit are pressed, and the reference voltage of modulated signal is equal in the present embodiment
1.8V, certainly it will be appreciated by persons skilled in the art that the specific range of reference voltage is not limited to 1.8V, as long as not
More than the lasting pressure-resistant upper limit of metal-oxide-semiconductor.
Further, when signal SW0, SW1 and SW2 signal to be modulated is low level, at this time NMOS tube Q3, Q6 and
Q9 cut-off, so will make the voltage of node SW_S, SW_S1 and SW_S2 be pulled to 1.8V, as node SW_S, SW_S1
And after the voltage of SW_S2 is pulled to 1.8V, NMOS tube Q2, Q5 and Q8 conducting, PMOS tube Q1, Q4 and Q7 end,
Cache switching diodes D1, D2, D3 and D4 forward conduction at this time, since the voltage value of S_P_TX_RX is approximate with VDD_POWER
It is equal, and the voltage of S_P_TX_RX be greater than modulated signal benchmark electricity REF1V), at this time storage capacitor C1, C2 and C3 into
Row quick charge, and low level time, switch element Q1 to Q9 are maintained in signal SW0, SW1 and SW2 signal to be modulated
State remain unchanged, storage capacitor C1, C2 and C3 electricity fills with, and storage capacitor C1, C2 and C3 at this time
Voltage is in 1.8V, such as the waveform of Fig. 5 shown in Step1.
Further, when signal SW0, SW1 and SW2 signal to be modulated becomes high level, at this time NMOS tube Q3, Q6 with
And Q9 conducting, so the voltage for making node SW_S, SW_S1 and SW_S2 is forced to draw and arrives GND, at this time PMOS tube Q1, Q4
And Q7 conducting, NMOS tube Q2, Q5 and Q8 cut-off, for first signal modulation unit 131, the PMOS tube of conducting
Q1 makes the reference voltage of 1.8V continue to charge to capacitor C1, and due to the electricity of storage capacitor C1 after the filling in Step1
Pressure is 1.8V, when the reference voltage of 1.8V is continued by the PMOS tube Q1 of conducting to after capacitor C1 charging, the electricity of capacitor C1 at this time
Pressure will rise to 3.6V, i.e. the voltage of node VDD1 is 3.6V；For second signal modulation unit 131, conducting
PMOS tube Q4 make the 3.6V voltage of node VDD1 continue to capacitor C2 charge, and due in Step1 storage capacitor C2 exist
It is 1.8V full of voltage later, when the 3.6V voltage of node VDD1 continues to charge to capacitor C2 by the PMOS tube Q4 be connected
Afterwards, the voltage of capacitor C2 will rise to 5.4V at this time, i.e. the voltage of node VDD2 is 5.4V；For third signal modulation unit
For 131, the PMOS tube Q7 of conducting makes the 5.4V voltage of node VDD2 continue to charge to capacitor C3, and due in Step1
The voltage of storage capacitor C3 after the filling be 1.8V, when node VDD2 5.4V voltage by conducting PMOS tube Q7 continue to
After capacitor C3 charging, the voltage of capacitor C3 will rise to 7.2V at this time, i.e. the voltage of node VDD3 is 7.2V, therefore the 7.2V
After voltage and supply voltage superposition so that S_P_TX_RX voltage will be forced to boost to 32.1V or so, as Fig. 5 waveform in
Shown in Step2, and then realize the three times boosting of modulated signal；It should be noted that in this stage, cache switching diodes D1,
D2 and D3 reversely end, and cache switching diodes D4 forward conduction, the state of switch element Q1 to Q9 remains unchanged.
Further, when signal SW0, SW1 and SW2 signal to be modulated becomes low level again from high level, at this time
PMOS tube Q1, Q4, Q7 and NMOS tube Q3, Q6 and Q9 will end simultaneously, NMOS tube Q2, Q5 and Q8 conducting, node VDD1
Voltage drops to 1.8V by 3.6, and VDD2 voltage drops to 1.8V by 5.4V, and the voltage of SW_S, SW_S1 and SW_S2 are approximately
1.8V will repeat the process of Step1 later, and SW0, SW1 and SW2 signal become low level process from high level, such as Fig. 5
In waveform shown in Step3.
It should be noted that above-mentioned detailed process is for carrying out three multiplication of voltages to modulated signal to signal modulation transmission circuit
1 working principle is specifically described, and when needing to carry out a multiplication of voltage to modulated signal, then can according to signal to be modulated and
Switch control signal selects any of Fig. 4 signal modulation unit 131 to carry out a multiplication of voltage to modulated signal, when needs believe modulation
Number carry out two multiplication of voltages when, then any two signal modulation units in Fig. 4 can be selected according to signal to be modulated and switch control signal
131 pairs of modulated signals carry out two multiplication of voltages, regardless of being a multiplication of voltage either two multiplication of voltages, detailed process and above-mentioned three multiplication of voltages principle
In single or two signal modulation units 131 working principle it is identical, details are not described herein again.
In the present embodiment, the signal modulation transmission circuit 1 that the disclosure provides is real by the way that power supply line and connection to be multiplexed
Between existing host and slave while telecommunication, reduces peripheral components, circuit cost is reduced, installation wiring letter
Single, integrated level height, and it is easy to device miniaturization；In addition, using the signal modulation unit of multi-stage cascade, so that modulated signal
Intensity is adjustable, enhances the communication effect between host and slave, and strong antijamming capability.
Further, the disclosure additionally provides a kind of signal modulation transmitting device, which includes letter
Number modulation transmissions circuit 1.It should be noted that the signal tune of the signal modulation transmitting device as provided by the embodiment of the present disclosure
Transmission circuit and Fig. 1 processed to Fig. 5 signal modulation transmission circuit 1 it is identical, therefore, signal tune provided by the embodiment of the present disclosure
The concrete operating principle of signal modulation transmission circuit 1 in transmitting device processed can refer to retouching in detail previously with regard to Fig. 1 to Fig. 5
It states, details are not described herein again.
Further, the disclosure additionally provides a kind of electronic equipment, which includes that signal modulation passes
Defeated device.It should be noted that the signal modulation transmitting device of the electronic equipment as provided by the embodiment of the present disclosure and aforementioned
Signal modulation transmitting device it is identical, therefore, the signal modulation transmitting device in electronic equipment provided by the embodiment of the present disclosure
Concrete operating principle, can refer to aforementioned associated description, details are not described herein again.
In the embodiments of the present disclosure, the signal modulation transmission circuit that the disclosure provides is in main control module to signal control module
Modulated signal is exported, and receives the feedback signal of slave, and corresponding switch control signal is exported to letter according to the feedback signal
Number control module；Signal control module generates multichannel signal to be modulated according to modulated signal, and in the effect of switch control signal
It is lower corresponding signal to be modulated is modulated according to multichannel signal control signal modulation module to be modulated after, by host with from
The modulated signal to be modulated is sent to slave by the power supply line between machine, and realizing can between host equipment and slave devices
While being communicated, used circuit structure is simple, at low cost, and the multiplexing of communication power supply line, so that installation wiring
Simply, communication distance is unrestricted, strong antijamming capability and easily miniaturization.
Above embodiments are only to illustrate the technical solution of the disclosure, rather than its limitations；Although with reference to the foregoing embodiments
The disclosure is described in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope of each embodiment technical solution of the disclosure that it does not separate the essence of the corresponding technical solution should all include
Within the protection scope of the disclosure.
Claims (10)
1. a kind of signal modulation transmission circuit, for the communication between host and multiple slaves, which is characterized in that the signal tune
Transmission circuit processed is arranged in the host, and the signal modulation transmission circuit includes:
Main control module, signal control module, power supply module and signal modulation module；
The main control module is connect with the power supply module, the signal control module and multiple slaves, described
Signal control module is connect with the signal modulation module, and the signal modulation module is connect with multiple slaves；
The power supply module receives supply voltage, and provides work electricity to the main control module according to the supply voltage
Pressure；The main control module exports modulated signal to the signal control module, and receives the feedback signal of slave, and anti-according to this
Feedback signal exports corresponding switch control signal to the signal control module；The signal control module is believed according to the modulation
Number multichannel signal to be modulated is generated, and institute is controlled according to multichannel signal to be modulated under the action of the switch control signal
It states after signal modulation module is modulated corresponding signal to be modulated, by the power supply line between host and slave by the modulation
Signal to be modulated afterwards is sent to slave.
2. signal modulation transmission circuit as described in claim 1, which is characterized in that the signal modulation module includes that protection is single
First and multiple cascade signal modulation units, first signal modulation unit receive reference voltage, the last one signal modulation list
First to connect with the protection location, the protection location is connect with the power supply line, and each signal modulation unit is equal
It is connect with the signal control module；
The signal control module controls at least under the action of the switch control signal according to multichannel signal to be modulated
After one signal modulation unit is modulated corresponding signal to be modulated, the electricity is sent to by the protection location
On the line of source, the modulated signal to be modulated is sent to slave by the power supply line.
3. signal modulation transmission circuit as claimed in claim 2, which is characterized in that each signal modulation unit includes opening
Climax unit and signal modulation subelement, the switch subelement and the signal control module and signal modulation are single
Member connection；
The signal control module selects from multichannel signal to be modulated corresponding under the action of the switch control signal
Signal to be modulated, and according to the signal to be modulated control it is described switch subelement working condition；Signal modulation
After unit is modulated the signal to be modulated under the working condition of the switch subelement, sent out by the protection location
It send to the power supply line, the modulated signal to be modulated is sent to slave by the power supply line.
4. signal modulation transmission circuit as claimed in claim 3, which is characterized in that the switch subelement includes first switch
Element and first resistor；
The control terminal of the first switching element is connect with the first end of the first resistor, the input of the first switching element
End is connect with the signal modulation subelement, and the output end of the first switching element and the second end of the first resistor connect altogether
Yu Di, and connect with the signal control module.
5. signal modulation transmission circuit as claimed in claim 4, which is characterized in that the first switching element is NMOS crystal
Pipe, the grid of the NMOS transistor are the control terminal of the first switching element, and the drain electrode of the NMOS transistor is described
The input terminal of first switching element, the source electrode of the NMOS transistor are the output end of the first switching element.
6. signal modulation transmission circuit as claimed in claim 3, which is characterized in that the signal modulation subelement includes second
Switch element, third switch element, second resistance, 3rd resistor, capacitor and diode；
The anode of the diode connects altogether with the input terminal of the second switch element and the first end of the 3rd resistor, institute
It states the second end of 3rd resistor and the control terminal of the control terminal of the second switch element and the third switch element connects altogether,
And it being connect with the switch subelement, the cathode of the diode is connect with the first end of the capacitor, and the of the capacitor
Two ends connect altogether with the output end of the second switch element and the first end of the second resistance, and the second of the second resistance
End is connect with the input terminal of the third switch element, and the output end of the third switch element and the switch subelement connect
It connects.
7. signal modulation transmission circuit as claimed in claim 6, which is characterized in that the second switch element is PMOS crystal
Pipe, the grid of the PMOS transistor are the control terminal of the second switch element, and the drain electrode of the PMOS transistor is described
The input terminal of second switch element, the source electrode of the PMOS transistor are the output end of the second switch element；The third
Switch element is NMOS transistor, and the grid of the NMOS transistor is the control terminal of the third switch element, the NMOS
The drain electrode of transistor is the input terminal of the third switch element, and the source electrode of the NMOS transistor is the third switch element
Output end.
8. signal modulation transmission circuit as claimed in claim 2, which is characterized in that the protection location includes two pole of Schottky
Pipe, the anode of the Schottky diode connect with the signal modulation unit, the cathode of the Schottky diode with it is described
Power supply line connection.
9. a kind of signal modulation transmitting device, which is characterized in that the signal modulation transmitting device includes such as claim 1 to 8
Described in any item signal modulation transmission circuits.
10. a kind of electronic equipment, which is characterized in that the electronic equipment includes signal modulation transmission as claimed in claim 9
Device.
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