CN109951195B - Electronic equipment, signal modulation transmission device and signal modulation transmission circuit thereof - Google Patents
Electronic equipment, signal modulation transmission device and signal modulation transmission circuit thereof Download PDFInfo
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Abstract
The invention provides an electronic device, a modulation signal transmission device and a signal modulation transmission circuit thereof, wherein the signal modulation transmission circuit outputs a modulation signal to a signal control module at a main control module, receives a feedback signal of a slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates multipath signals to be modulated according to the modulating signals, and after the corresponding signals to be modulated are modulated according to the multipath signals to be modulated by the signal control module under the action of the switch control signals, the modulated signals to be modulated are sent to the slave machine through the power line between the host machine and the slave machine, so that the communication between the host machine equipment and the slave machine equipment is realized, meanwhile, the adopted circuit is simple in structure and low in cost, the multiplexing of the communication power line is realized, the installation wiring is simple, the communication distance is not limited, the anti-interference capability is strong, and the miniaturization is easy.
Description
Technical Field
The disclosure relates to the technical field of signal modulation, and in particular relates to an electronic device, a signal modulation transmission device and a signal modulation transmission circuit thereof.
Background
With the progress of scientific technology, communication between a master device and a plurality of slave devices in various electric power fields such as security protection and fire protection becomes a serious issue in modern communication technology. Currently, in order to solve the above-mentioned problems, in the prior art, a power line and a communication line are isolated when a host device and a slave device communicate, and a signal conversion circuit is added between the host device and the slave device, so that signals are converted by the signal conversion circuit and then transmitted to the slave device by the communication line.
However, although the above method enables the master device and the slave device to perform effective communication, it requires adding a signal conversion circuit between the master device and the slave device, which complicates circuit design, increases circuit peripheral devices, and increases circuit cost; in addition, the power line and the communication line are isolated, so that more wires are needed, the manufacturing cost is increased, the installation wiring is complex, the communication distance is limited, the anti-interference capability is poor, and the miniaturization is not easy.
In summary, the existing communication device between the master device and the slave device has the problems of complex circuit structure, high cost, complex installation wiring, limited communication distance, poor anti-interference capability and difficult miniaturization.
Disclosure of Invention
The disclosure aims to provide an electronic device, a signal modulation transmission device and a signal modulation transmission circuit thereof, so as to solve the problems of complex circuit structure, high cost, complex installation wiring, limited communication distance, poor anti-interference capability and difficult miniaturization of the communication equipment between the prior host device and the slave device.
The present disclosure is achieved in that a first aspect of the present disclosure provides a signal modulation transmission circuit for communication between a master and a plurality of slaves, wherein the signal modulation transmission circuit is disposed in the master, the signal modulation transmission circuit comprising:
the system comprises a main control module, a signal control module, a power supply module and a signal modulation module;
the master control module is connected with the power supply module, the signal control module and the slaves, the signal control module is connected with the signal modulation module, and the signal modulation module is connected with the slaves;
the power supply module receives a power supply voltage and provides a working voltage for the main control module according to the power supply voltage; the main control module outputs a modulation signal to the signal control module, receives a feedback signal of the slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates a plurality of paths of signals to be modulated according to the modulating signals, and under the action of the switch control signals, the signal modulation module is controlled to modulate the corresponding signals to be modulated according to the plurality of paths of signals to be modulated, and the modulated signals to be modulated are sent to the slave machine through a power line between the master machine and the slave machine.
A second aspect of the present disclosure provides a signal modulation transmission apparatus, which includes the signal modulation transmission circuit of the first aspect.
A third aspect of the present disclosure provides an electronic device, which includes the signal modulation transmission apparatus of the second aspect.
The invention provides an electronic device, a signal modulation transmission device and a signal modulation transmission circuit thereof, wherein the signal modulation transmission circuit outputs a modulation signal to a signal control module at a main control module, receives a feedback signal of a slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates multipath signals to be modulated according to the modulating signals, and after the corresponding signals to be modulated are modulated according to the multipath signals to be modulated by the signal control module under the action of the switch control signals, the modulated signals to be modulated are sent to the slave machine through the power line between the host machine and the slave machine, so that the communication between the host machine equipment and the slave machine equipment is realized, meanwhile, the adopted circuit is simple in structure and low in cost, the multiplexing of the communication power line is realized, the installation wiring is simple, the communication distance is not limited, the anti-interference capability is strong, and the miniaturization is easy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required for the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of a signal modulation transmission circuit according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a signal modulation transmission circuit according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a signal modulation transmission circuit according to another embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a signal modulation transmission circuit according to an embodiment of the present disclosure;
fig. 5 is a timing diagram illustrating operation of a signal modulation transmission circuit according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the present disclosure.
Further, in the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the disclosed embodiments. However, it will be apparent to one skilled in the art that the present disclosure may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary detail.
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
In order to illustrate the technical solutions of the present disclosure, the following description is made by specific embodiments.
The embodiment of the present disclosure provides a signal modulation transmission circuit 1, as shown in fig. 1, the signal modulation transmission circuit 1 is used for communication between a master 2 and a plurality of slaves 3, and the signal modulation transmission circuit 1 is provided in the master 2. The signal modulation transmission circuit 1 comprises a main control module 10, a signal control module 11, a power supply module 12 and a signal modulation module 13.
The master control module 10 is connected with the power supply module 2, the signal control module 11 and the plurality of slaves 3, the signal control module 11 is connected with the signal modulation module 13, and the signal modulation module 13 is connected with the plurality of slaves 3.
Specifically, the POWER supply module 12 receives the POWER supply voltage VDD-POWER and provides the working voltage to the main control module 10 according to the POWER supply voltage VDD-POWER; the main control module 10 outputs a modulation signal BS-W to the signal control module 11, receives a feedback signal of the slave 3, and outputs a corresponding switch control signal to the signal control module 11 according to the feedback signal; the signal control module 11 generates multiple paths of signals to be modulated according to the modulation signals BS-W, and modulates the corresponding signals to be modulated according to the multiple paths of signals to be modulated by the switch control signal modulation module 13, and then sends the modulated signals to be modulated to the slave 3 through a power line between the host 2 and the slave 3.
It should be noted that, in the embodiment of the present disclosure, each path of signals to be modulated in the multiple paths of signals to be modulated generated by the signal control module according to the modulating signal belongs to the same signal as the modulating signal.
In this embodiment, the signal modulation transmission circuit 1 provided in this embodiment of the present disclosure outputs a modulation signal to the signal control module at the master control module, receives a feedback signal of the slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates multipath signals to be modulated according to the modulating signals, and modulates the corresponding signals to be modulated according to the multipath signals to be modulated under the action of the switch control signals, and then the modulated signals to be modulated are sent to the slave machine through the power line between the host machine and the slave machine, so that the communication between the host machine equipment and the slave machine equipment is realized, meanwhile, the adopted circuit is simple in structure and low in cost, the communication power line is multiplexed, the installation wiring is simple, the communication distance is not limited, the anti-interference capability is high, and the miniaturization is easy, and therefore the problems that the circuit structure is complex, the cost is high, the installation wiring is complex, the anti-interference capability is poor, and the miniaturization is difficult in the existing communication equipment between the host machine equipment and the slave machine equipment are solved.
Further, as an embodiment of the present disclosure, as shown in fig. 2, the signal modulation module 13 includes a protection unit 130 and a plurality of cascaded signal modulation units 131 (three are illustrated in the drawing as an example). Wherein the first signal modulation unit 131 receives the reference voltage, the last signal modulation unit 131 is connected with the protection unit 130, the protection unit 130 is connected with a power line between the master 2 and the slave 3, and each signal modulation unit 131 is connected with the signal control module 11.
Specifically, the signal control module 11 controls at least one signal modulation unit 131 to modulate a corresponding signal to be modulated according to the multipath signal to be modulated under the action of the switch control signal, and sends the modulated signal to be modulated to the power line through the protection unit 130, so that the modulated signal to be modulated is sent to the slave 3 through the power line.
When the switch control signal is a voltage doubling of the modulation signal, the signal control module 11 selects one path of signal to be modulated from the multiple paths of signals to be modulated under the action of the switch control signal, and controls at least one signal modulation unit 131 to perform voltage doubling modulation on the corresponding signal to be modulated according to the selected path of signal to be modulated; when the switching control signal is the double voltage of the modulating signal, the signal control module 11 selects two paths of signals to be modulated from the multipath signals to be modulated under the action of the switching control signal, and controls the two signal modulating units 131 to perform double voltage modulation on the corresponding signals to be modulated according to the selected two paths of signals to be modulated; when the switch control signal is three times of the modulation signal, the signal control module 11 selects three paths of signals to be modulated from the multipath signals to be modulated under the action of the switch control signal, controls the three signal modulation units 131 to perform three times of the corresponding signals to be modulated according to the selected three paths of signals to be modulated, and the like, and when the switch control signal is n times of the modulation signal, the signal control module 11 selects n paths of signals to be modulated from the multipath signals to be modulated under the action of the switch control signal, and controls the n signal modulation units 131 to perform n times of the corresponding signals to be modulated according to the selected n paths of signals to be modulated.
In the embodiment of the present disclosure, by adopting the signal modulation module 13 including the plurality of cascaded signal modulation units 131, the signal modulation module 13 can modulate modulated signals with different voltage doubles, so as to realize modulation of the modulated signal strength, thereby meeting the communication requirements between the master and slave machines under different conditions.
Further, as an embodiment of the present disclosure, as shown in fig. 3, each signal modulation unit 131 includes a switch subunit 131a and a signal modulation subunit 131 b. The switch subunit 131a is connected to the signal control module 11 and the signal modulation subunit 131 b.
Specifically, the signal control module 11 selects a corresponding signal to be modulated from the multiple paths of signals to be modulated under the action of the switch control signal, and controls the working state of the switch subunit 131a according to the signal to be modulated; the signal modulation subunit 131b modulates the signal to be modulated in the working state of the switch subunit 131a, and sends the modulated signal to be modulated to the power line through the protection unit 130, so that the modulated signal to be modulated is sent to the slave 3 through the power line.
Further, as an embodiment of the present disclosure, as shown in fig. 4, the switching subunit 131a includes a first switching element Q3 and a first resistor R1.
The control end of the first switching element Q3 is connected to the first end of the first resistor R1, the input end of the first switching element Q3 is connected to the signal modulation subunit 131b, and the output end of the first switching element Q3 is commonly grounded to the second end of the first resistor R1 and connected to the signal control module 11.
In specific implementation, the first switching element Q3 is an NMOS transistor, a gate of the NMOS transistor is a control end of the first switching element Q3, a drain of the NMOS transistor is an input end of the first switching element Q3, and a source of the NMOS transistor is an output end of the first switching element Q3.
It should be noted that, in the embodiment of the present disclosure, the first switching element Q3 may also be implemented by other switching elements, for example, PMOS transistors, and the selection of the first switching element Q3 is related to the signal to be modulated; in addition, in fig. 4 shown in the embodiment of the present disclosure, only three signal modulation units 131 are illustrated as an example, that is, the switch sub-units 131a shown in fig. 4 are also illustrated as three examples, and the first switching elements and the first resistors in the second switch sub-unit 131a are denoted by Q6 and R4, respectively, and the first switching elements and the first resistors in the third switch sub-unit 131a are denoted by Q9 and R7, respectively.
Further, as an embodiment of the present disclosure, as shown in fig. 4, the signal modulation subunit 131a includes a second switching element Q1, a third switching element Q3, a second resistor R2, a third resistor R3, a capacitor C1, and a diode D1.
The anode of the diode D1 is commonly connected to the input end of the second switching element Q1 and the first end of the third resistor R3, the second end of the third resistor R3 is commonly connected to the control end of the second switching element Q1 and the control end of the third switching element Q2, and is connected to the switching subunit 131a, the cathode of the diode D1 is connected to the first end of the capacitor C1, the second end of the capacitor C1 is commonly connected to the output end of the second switching element Q1 and the first end of the second resistor R2, the second end of the second resistor R2 is connected to the input end of the third switching element Q2, and the output end of the third switching element Q2 is connected to the switching subunit 131 a.
In specific implementation, the second switching element Q1 is a PMOS transistor, a gate of the PMOS transistor is a control end of the second switching element Q1, a drain of the PMOS transistor is an input end of the second switching element Q1, and a source of the PMOS transistor is an output end of the second switching element Q1; the third switching element Q2 is an NMOS transistor, the gate of the NMOS transistor is the control end of the third switching element Q2, the drain of the NMOS transistor is the input end of the third switching element Q3, and the source of the NMOS transistor is the output end of the third switching element Q3.
It should be noted that, in the embodiment of the present disclosure, the second switching element Q1 may be implemented by other switching elements, for example, an NMOS transistor, and the third switching element Q2 may be implemented by other switching elements, for example, a PMOS transistor, where the selection of the second switching element Q1 and the third switching element Q2 is related to the signal to be modulated and the first switching element Q3; in addition, in fig. 4 shown in the embodiment of the present disclosure, only three signal modulation units 131 are illustrated as an example, that is, the signal modulation subunit 131b shown in fig. 4 is also illustrated as three examples, and the second switching element, the third switching element, the diode, and the capacitor in the second signal modulation subunit 131b are denoted by Q4, Q5, D2, and C2, and the second switching element, the third switching element, the diode, and the capacitor in the third signal modulation subunit 131b are denoted by Q7, Q8, D3, and C3.
Further, as an embodiment of the present disclosure, as shown in fig. 4, the protection unit 130 includes a schottky diode D5, an anode of the schottky diode D5 is connected to the signal modulation unit 131, and a cathode of the schottky diode D5 is connected to the power line.
The specific operation principle of the signal modulation transmission circuit 1 provided in the embodiment of the present disclosure is described below by taking the circuits shown in fig. 3 and 4 and the operation timing chart shown in fig. 5 as an example, and the details are as follows:
as shown in fig. 3, when a modulated signal from the host 2 is supplied to a power line, the modulated signal is outputted to a first slave unit 3 via the power line, and is transmitted from the first slave unit 3 to a second slave unit 3, thereby being transmitted to a plurality of slave units. When the first slave unit 3 receives the modulated signal sent by the host 2, a response signal is fed back to the host 2, and when the distance between the first slave unit 3 and the host 2 is too far, the first slave unit 3 cannot receive the modulated signal sent by the host 2, or when the first slave unit 3 receives the modulated signal sent by the host 2 and detects that the modulated signal quality is poor, the first slave unit 3 feeds back the modulated signal to the host 2 to be weak or cannot receive the modulated signal, at this time, the host 2 performs one-time voltage doubling on the modulated signal and then resends the modulated signal, and if the modulated signal is subjected to one-time voltage doubling, the first slave unit 3 continuously feeds back the modulated signal to be weak or cannot receive the modulated signal, at this time, the host 2 performs two-time voltage doubling, three-time voltage doubling and the like on the modulated signal until the first slave unit 3 can receive the modulated signal.
The following describes in detail the operation principle of the signal modulation transmission circuit 1 of the present disclosure, taking the case that the host 2 performs triple voltage on the modulation signal as an example: when the main control module 10 cannot receive the response signal fed back by the slave unit 3, the main control module 10 outputs a modulated driving voltage b_sw signal, that is, a modulated signal b_sw, to the signal control module 11, and outputs switch control signals a and B to the signal control module 13. After receiving the modulation signal b_sw, the signal control module 13 divides the modulation signal b_sw into three paths of signals SW0, SW1 and SW2 to be modulated, and controls the three paths of signals SW0, SW1 and SW2 to be modulated to be output when detecting that the switch control signals a and B are at high level simultaneously; it should be noted that, in the embodiment of the present disclosure, the frequency bandwidth of the modulation signal b_sw is not specifically limited, and the signal peak-to-peak value thereof depends on the POWER supply voltage vdd_power of the POWER supply and the reference voltage REF1V8 of the modulation circuit, whereas in the embodiment, the reference voltage of the modulation signal is equal to 1.8V, and of course, it will be understood by those skilled in the art that the specific range of the reference voltage is not limited to 1.8V, as long as the continuous upper voltage tolerance of the MOS transistor is not exceeded.
Further, when the signals SW0, SW1 and SW2 to be modulated are low, the NMOS transistors Q3, Q6 and Q9 are turned off, so that the voltages of the nodes sw_ S, SW _s1 and sw_s2 are all pulled up to 1.8V, when the voltages of the nodes sw_ S, SW _s1 and sw_s2 are all pulled up to 1.8V, the NMOS transistors Q2, Q5 and Q8 are turned on, the PMOS transistors Q1, Q4 and Q7 are turned off, the high-speed switching diodes D1, D2, D3 and D4 are turned on, and the voltages of the switching elements Q1 to Q9 are not kept full of the voltages C1, C2 and C3, and the waveforms of the storage capacitors C1, C3 and C1 are full of the waveforms such as those shown in fig. 1, C3 and C1, C3, C1 and C2 are full of the waveforms of the modulation signals, since the voltages of the s_p_tx_rx are approximately equal to the voltage of vdd_power.
Further, when the signals SW0, SW1 and SW2 to be modulated become high, the NMOS transistors Q3, Q6 and Q9 are turned on, so that the voltages of the nodes sw_ S, SW _s1 and sw_s2 are forced to be pulled to GND, the PMOS transistors Q1, Q4 and Q7 are turned on, the NMOS transistors Q2, Q5 and Q8 are turned off, the turned-on PMOS transistor Q1 keeps the reference voltage of 1.8V charging the capacitor C1, and since the voltage of the storage capacitor C1 after being full in Step1 is 1.8V, the voltage of the capacitor C1 is raised to 3.6V when the reference voltage of 1.8V keeps charging the capacitor C1 through the turned-on PMOS transistor Q1, i.e. the voltage of the node VDD1 is 3.6V; meanwhile, for the second signal modulation unit 131, the turned-on PMOS transistor Q4 makes the voltage of 3.6V of the node VDD1 continuously charge the capacitor C2, and since the voltage of the energy storage capacitor C2 after being fully charged in Step1 is 1.8V, when the voltage of 3.6V of the node VDD1 continuously charges the capacitor C2 through the turned-on PMOS transistor Q4, the voltage of the capacitor C2 will rise to 5.4V, i.e. the voltage of the node VDD2 is 5.4V; for the third signal modulating unit 131, the turned-on PMOS transistor Q7 makes the voltage of 5.4V of the node VDD2 continuously charge the capacitor C3, and since the voltage of the energy storage capacitor C3 after being fully charged in Step1 is 1.8V, when the voltage of 5.4V of the node VDD2 continuously charges the capacitor C3 through the turned-on PMOS transistor Q7, the voltage of the capacitor C3 will rise to 7.2V, i.e. the voltage of the node VDD3 is 7.2V, so that after the voltage of 7.2V is superimposed with the power supply voltage, the voltage of s_p_tx_rx will be forcedly boosted to about 32.1V, as shown in Step2 in the waveform of fig. 5, thereby realizing triple boosting of the modulating signal; in this stage, the high-speed switching diodes D1, D2, and D3 are turned off in the reverse direction, the high-speed switching diode D4 is turned on in the forward direction, and the states of the switching elements Q1 to Q9 remain unchanged.
Further, when the signals SW0, SW1 and SW2 to be modulated are changed from high level to low level again, the PMOS transistors Q1, Q4, Q7 and the NMOS transistors Q3, Q6 and Q9 are turned off simultaneously, the NMOS transistors Q2, Q5 and Q8 are turned on, the voltage of the node VDD1 is reduced from 3.6 to 1.8V, the voltage of the node VDD2 is reduced from 5.4V to 1.8V, and the voltages of the sw_ S, SW _s1 and sw_s2 are approximately 1.8V, and then the process of Step1 is repeated, and the processes of the signals SW0, SW1 and SW2 are changed from high level to low level are repeated, as shown by Step3 in the waveform of fig. 5.
It should be noted that, the above specific process specifically describes the working principle of the signal modulation transmission circuit 1 by taking the triple voltage of the modulated signal as an example, and when the modulated signal needs to be doubled, any one of the signal modulation units 131 in fig. 4 may be selected to doubled according to the signal to be modulated and the switch control signal, and when the modulated signal needs to be doubled, any two of the signal modulation units 131 in fig. 4 may be selected to doubled according to the signal to be modulated and the switch control signal, and the specific process is the same as the working principle of the single or two signal modulation units 131 in the triple voltage principle, and is not repeated here.
In this embodiment, the signal modulation transmission circuit 1 provided in the present disclosure realizes remote communication between the host and the slave by multiplexing the power line and the communication line, and reduces peripheral devices, so that the circuit cost is reduced, the installation wiring is simple, the integration level is high, and the device is easy to miniaturize; in addition, the multi-stage cascade signal modulation units are adopted, so that the intensity of a modulation signal is adjustable, the communication effect between a host computer and a slave computer is enhanced, and the anti-interference capability is high.
Further, the present disclosure also provides a signal modulation transmission apparatus including the signal modulation transmission circuit 1. It should be noted that, since the signal modulation transmission circuit of the signal modulation transmission device provided in the embodiment of the present disclosure is the same as the signal modulation transmission circuit 1 shown in fig. 1 to 5, the specific working principle of the signal modulation transmission circuit 1 in the signal modulation transmission device provided in the embodiment of the present disclosure may refer to the foregoing detailed description about fig. 1 to 5, and will not be repeated here.
Further, the present disclosure also provides an electronic device, where the signal modulation transmission device includes a signal modulation transmission device. It should be noted that, since the signal modulation transmission device of the electronic device provided by the embodiment of the present disclosure is the same as the signal modulation transmission device described above, the specific working principle of the signal modulation transmission device in the electronic device provided by the embodiment of the present disclosure may refer to the foregoing related description, and will not be repeated here.
In the embodiment of the disclosure, the signal modulation transmission circuit provided by the disclosure outputs a modulation signal to the signal control module at the main control module, receives a feedback signal of the slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates multipath signals to be modulated according to the modulating signals, and after the corresponding signals to be modulated are modulated according to the multipath signals to be modulated by the signal control module under the action of the switch control signals, the modulated signals to be modulated are sent to the slave machine through the power line between the host machine and the slave machine, so that the communication between the host machine equipment and the slave machine equipment is realized, meanwhile, the adopted circuit is simple in structure and low in cost, the multiplexing of the communication power line is realized, the installation wiring is simple, the communication distance is not limited, the anti-interference capability is strong, and the miniaturization is easy.
The above embodiments are merely for illustrating the technical solution of the present disclosure, and are not limiting thereof; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the disclosure, and are intended to be included in the scope of the present disclosure.
Claims (10)
1. A signal modulation transmission circuit for communication between a master and a plurality of slaves, the signal modulation transmission circuit being disposed in the master, the signal modulation transmission circuit comprising:
the system comprises a main control module, a signal control module, a power supply module and a signal modulation module;
the master control module is connected with the power supply module, the signal control module and the slaves, the signal control module is connected with the signal modulation module, and the signal modulation module is connected with the slaves;
the power supply module receives a power supply voltage and provides a working voltage for the main control module according to the power supply voltage; the main control module outputs a modulation signal to the signal control module, receives a feedback signal of the slave, and outputs a corresponding switch control signal to the signal control module according to the feedback signal; the signal control module generates a plurality of paths of signals to be modulated according to the modulating signals, and under the action of the switch control signals, the signal modulation module is controlled to modulate the corresponding signals to be modulated according to the plurality of paths of signals to be modulated, and the modulated signals are sent to the slave machine through a power line between the master machine and the slave machine.
2. The signal modulation transmission circuit according to claim 1, wherein the signal modulation module includes a protection unit and a plurality of cascaded signal modulation units, a first signal modulation unit receiving a reference voltage, a last signal modulation unit being connected to the protection unit, the protection unit being connected to the power line, and each of the signal modulation units being connected to the signal control module;
the signal control module controls at least one signal modulation unit to modulate corresponding signals to be modulated according to the multipath signals to be modulated under the action of the switch control signals, and sends the modulated signals to the power line through the protection unit so as to send the modulated signals to the slave machine through the power line.
3. The signal modulation transmission circuit according to claim 2, wherein each of the signal modulation units includes a switch subunit and a signal modulation subunit, the switch subunit being connected to the signal control module and the signal modulation subunit;
the signal control module selects corresponding signals to be modulated from the multipath signals to be modulated under the action of the switch control signals, and controls the working state of the switch subunit according to the signals to be modulated; the signal modulation subunit modulates the signal to be modulated under the working state of the switch subunit, and sends the modulated signal to be modulated to the power line through the protection unit, so that the modulated signal to be modulated is sent to the slave machine through the power line.
4. The signal modulation transmission circuit according to claim 3, wherein the switching subunit includes a first switching element and a first resistor;
the control end of the first switching element is connected with the first end of the first resistor, the input end of the first switching element is connected with the signal modulation subunit, and the output end of the first switching element is commonly grounded with the second end of the first resistor and is connected with the signal control module.
5. The signal modulation transmission circuit according to claim 4, wherein the first switching element is an NMOS transistor, a gate of the NMOS transistor is a control terminal of the first switching element, a drain of the NMOS transistor is an input terminal of the first switching element, and a source of the NMOS transistor is an output terminal of the first switching element.
6. The signal modulation transmission circuit according to claim 3, wherein the signal modulation subunit includes a second switching element, a third switching element, a second resistor, a third resistor, a capacitor, and a diode;
the anode of the diode is commonly connected with the input end of the second switching element and the first end of the third resistor, the second end of the third resistor is commonly connected with the control end of the second switching element and the control end of the third switching element, and is connected with the switching subunit, the cathode of the diode is connected with the first end of the capacitor, the second end of the capacitor is commonly connected with the output end of the second switching element and the first end of the second resistor, the second end of the second resistor is connected with the input end of the third switching element, and the output end of the third switching element is connected with the switching subunit.
7. The signal modulation transmission circuit according to claim 6, wherein the second switching element is a PMOS transistor, a gate of the PMOS transistor is a control terminal of the second switching element, a drain of the PMOS transistor is an input terminal of the second switching element, and a source of the PMOS transistor is an output terminal of the second switching element; the third switching element is an NMOS transistor, the gate of the NMOS transistor is the control end of the third switching element, the drain of the NMOS transistor is the input end of the third switching element, and the source of the NMOS transistor is the output end of the third switching element.
8. The signal modulation transmission circuit according to claim 2, wherein the protection unit includes a schottky diode, an anode of the schottky diode is connected to the signal modulation unit, and a cathode of the schottky diode is connected to the power line.
9. A signal modulation transmission apparatus, characterized in that it comprises a signal modulation transmission circuit as claimed in any one of claims 1 to 8.
10. An electronic device comprising the signal modulation transmission apparatus according to claim 9.
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