CN112910504B - Direct current carrier communication system and device - Google Patents
Direct current carrier communication system and device Download PDFInfo
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- CN112910504B CN112910504B CN202110049492.3A CN202110049492A CN112910504B CN 112910504 B CN112910504 B CN 112910504B CN 202110049492 A CN202110049492 A CN 202110049492A CN 112910504 B CN112910504 B CN 112910504B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/547—Systems for power line communications via DC power distribution
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Abstract
The invention discloses a direct current carrier communication system and a device, wherein the system comprises: the system comprises a power supply module, a voltage control module, a first conversion module, a voltage division module and a system control module, wherein the power supply module outputs an alternating current power supply voltage signal; the first conversion module receives an alternating current power supply voltage signal output by the power supply module, converts the received alternating current power supply voltage signal into a direct current power supply voltage signal, and outputs a direct current power supply voltage signal with variable voltage under the control of the voltage control module; the voltage division module receives the direct current power supply voltage signal with the voltage change output by the first conversion module, samples and divides the voltage of the direct current power supply voltage signal, and sends the sampled and divided direct current power supply voltage signal to the system control module to realize power supply voltage signal transmission.
Description
Technical Field
The present invention relates to the field of technical communications, and in particular, to a dc carrier communication system and a device using the same.
Background
The existing direct current system needs to use a direct current carrier mode to carry out signal communication. For example, a direct current fan with a battery is used for supplying power to a base, a main control board is arranged at a handpiece, the power supply of the handpiece main control board is direct current wires (DC +, GND), if the information related to the battery on the base is transmitted to a handpiece main board, a signal wire must be added, sometimes the wire cannot be added due to structural limitation, at the moment, the signal can be coupled to the direct current wires (DC +, GND) in a direct current carrier mode, and the signal is amplified, shaped and restored at the other end, so that the direct current carrier communication is realized.
The existing direct current carrier wave scheme is generally a special carrier wave chip, a transmitting end and a receiving end need to use the special carrier wave chip in pairs, the circuit is complex, and the cost is high.
Disclosure of Invention
In view of this, the present invention provides a dc carrier communication system and a device using the same, and the system has a simple circuit structure, does not need a dedicated chip, and has a low cost.
A first aspect of the present invention provides a dc carrier communication system, including:
the power supply module is used for outputting an alternating current power supply voltage signal;
the input end of the first conversion module is connected with the power supply module and is used for receiving an alternating current power supply voltage signal output by the power supply module and converting the received alternating current power supply voltage signal into a direct current power supply voltage signal; the control end of the first conversion module is connected with a voltage control module and used for outputting a direct-current power supply voltage signal with voltage change under the control of the voltage control module; the output end of the first conversion module is connected with the voltage division module and is used for sending the direct-current power supply voltage signal with the changed voltage to the voltage division module;
the voltage division module is used for receiving the direct-current power supply voltage signal with the voltage change output by the first conversion module, sampling and dividing the voltage, and sending the sampled and divided direct-current power supply voltage signal to the system control module;
and the system control module is used for receiving the direct-current power supply voltage signal transmitted by the voltage dividing module and realizing power supply voltage signal transmission.
Further, the system also comprises a second conversion module and a second conversion module;
one end of the second conversion module is connected with the first conversion module, and the other end of the second conversion module is connected with the voltage control module, and the second conversion module is used for receiving the voltage-variable direct-current power supply voltage signal output by the first conversion module, converting the received voltage-variable direct-current power supply voltage signal into a fixed-voltage direct-current power supply voltage signal, and outputting the fixed-voltage direct-current power supply voltage signal to the voltage control module;
one end of the third conversion module is connected with the first conversion module, and the other end of the third conversion module is connected with the system control module, and the third conversion module is used for receiving the direct current power supply voltage signal with the voltage change output by the first conversion module, converting the received direct current power supply voltage signal with the voltage change into a direct current power supply voltage signal with a fixed voltage, and outputting the direct current power supply voltage signal to the system control module.
And the voltage division module comprises a first resistor and a second resistor which are connected in series, one end of the first resistor and one end of the second resistor which are connected in series are connected with the first conversion module, the other end of the first resistor and the other end of the second resistor are grounded, and a common connection point of the first resistor and the second resistor is connected with a receiving end of the system control module and is used for sampling a direct-current power supply voltage signal with voltage change output by the first conversion module, dividing the direct-current power supply voltage signal and sending the sampled and divided power supply voltage signal to the receiving end of the system control module.
The system further comprises an amplifying module, wherein one end of the amplifying module is connected with the common connection point of the first resistor and the second resistor, and the other end of the amplifying module is connected with the receiving end of the system control module and is used for receiving the power supply voltage signal sampled and divided by the first resistor and the second resistor, amplifying the sampled and divided power supply voltage signal and sending the amplified power supply voltage signal to the receiving end of the system control module.
A second aspect of the present invention provides a dc carrier communication system, including:
the power supply module is used for outputting an alternating current power supply voltage signal;
the input end of the first conversion module is connected with the power supply module, and the output end of the first conversion module is connected with the voltage conversion module and is used for receiving the alternating current power supply voltage signal output by the power supply module, converting the received alternating current power supply voltage signal into a direct current power supply voltage signal and sending the direct current power supply voltage signal to the voltage conversion module;
the voltage conversion module comprises an input end, an output end and a control end, wherein the input end of the voltage conversion module is connected with the first conversion module and is used for receiving the direct-current power supply voltage signal output by the first conversion module; the control end of the voltage conversion module is connected with a voltage control module and is used for outputting a direct-current power supply voltage signal with variable voltage under the control of the voltage control module; the output end of the voltage conversion module is connected with the voltage division module and is used for sending a direct-current power supply voltage signal with changed voltage to the voltage division module;
the voltage division module is used for receiving the DC power supply voltage with the voltage change output by the voltage conversion module, sampling and dividing the voltage, and sending a DC power supply voltage signal after sampling and dividing the voltage to the system control module;
and the system control module is used for receiving the direct-current power supply voltage signal transmitted by the voltage division module and realizing power supply voltage signal transmission.
Further, the system also comprises a second conversion module and a second conversion module;
one end of the second conversion module is connected with the first conversion module, and the other end of the second conversion module is connected with the voltage control module and is used for receiving the direct-current power supply voltage signal output by the first conversion module, converting the received direct-current power supply voltage signal into a direct-current power supply voltage signal with fixed voltage and outputting the direct-current power supply voltage signal to the voltage control module;
one end of the third conversion module is connected with the voltage conversion module, and the other end of the third conversion module is connected with the system control module and is used for receiving the voltage-variable direct-current power supply voltage signal output by the voltage conversion module, converting the received voltage-variable direct-current power supply voltage signal into a fixed-voltage direct-current power supply voltage signal and outputting the fixed-voltage direct-current power supply voltage signal to the system control module.
Further, the voltage control module comprises a diode and a triode which are connected in parallel, one end of the diode and the triode which are connected in parallel are connected with the first conversion module, the other end of the diode and the triode which are connected in parallel are connected with the third conversion module and the voltage division module, and the triode is also connected with the voltage control module and used for controlling the on and off of the triode through the voltage control module so that the diode and the triode which are connected in parallel output direct current power supply voltage signals with variable voltage.
Further, the voltage dividing module comprises a first resistor and a second resistor which are connected in series, one end of the first resistor and one end of the second resistor which are connected in series are connected with the other end of the diode and the other end of the triode which are connected in parallel, the other end of the first resistor and the other end of the second resistor which are connected in series are grounded, a common connection point of the first resistor and the second resistor is connected with a receiving end of the system control module and is used for sampling a direct current power supply voltage signal of voltage change output by the diode and the triode which are connected in parallel and dividing the voltage signal, and the sampled and divided power supply voltage signal is sent to the receiving end of the system control module.
The system further comprises an amplifying module, wherein one end of the amplifying module is connected with a common connection point of the first resistor and the second resistor, and the other end of the amplifying module is connected with a receiving end of the system control module and is used for receiving the power supply voltage signal sampled and divided by the first resistor and the second resistor, amplifying the sampled and divided power supply voltage signal and sending the amplified power supply voltage signal to the receiving end of the system control module.
A third aspect of the present invention provides an apparatus applying the above dc carrier communication system, the apparatus comprising the above dc carrier communication system.
The direct current carrier communication system converts the power supply voltage signal output by the power supply module into the voltage change of the power supply, transmits the voltage signal to the system control module through the voltage change, realizes the transmission of the power supply voltage signal, has a simple whole circuit, does not need a special carrier chip, has low cost and reliable transmission, and can be used in devices with narrow internal space, such as electric appliances like electric fans and the like.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, wherein:
fig. 1 is a first block diagram of a dc carrier communication system disclosed in this embodiment.
Fig. 2 is a circuit diagram of the dc carrier communication system shown in fig. 1.
Fig. 3 is a block diagram of a dc carrier communication system according to the first embodiment.
Fig. 4 is a circuit diagram of the dc carrier communication system shown in fig. 3.
Fig. 5 is a first block diagram of the dc carrier communication system disclosed in the second embodiment.
Fig. 6 is a circuit diagram of the dc carrier communication system shown in fig. 5.
Fig. 7 is a block diagram of a dc carrier communication system disclosed in the second embodiment.
Fig. 8 is a circuit diagram of the dc carrier communication system shown in fig. 7.
Fig. 9 is a schematic view of the structure of the electric fan.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some, but not all embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
Fig. 1 is a first block diagram of a dc carrier communication system disclosed in this embodiment. The direct current carrier communication system 100 is used for converting a power supply signal output by a power supply module at a transmitting end into a power supply voltage signal with a voltage VCC change, and reducing the power supply voltage signal with the voltage change into a useful power supply voltage signal to be transmitted to a system control module at a receiving end, so that low-cost short-distance low-speed unidirectional carrier communication between the power supply module and the system control module is realized, a special power carrier chip is not needed, and the cost is low.
Referring to fig. 1, the dc carrier communication system 100 includes a power module 101, a system control module 102, a first conversion module 103, a voltage control module 104, a voltage division module 105, a second conversion module 107, and a third conversion module 108.
And the power supply module 101 is located at the transmitting end and used for outputting an alternating-current power supply voltage signal.
The first conversion module 103 comprises an input end, a control end and an output end, the input end of the first conversion module 103 is connected with the output end of the power module 101, the output end of the first conversion module 103 is respectively connected with the second conversion module 107 and the third conversion module 108, the control end of the first conversion module 103 is connected with the voltage control module 104, the output end of the first conversion module 103 is further connected with the voltage division module 105, and is used for receiving an alternating current power supply voltage signal output by the power module 101 and converting the received alternating current power supply voltage signal into a direct current power supply voltage signal, and is further used for being controlled by the voltage control module 104 to output a direct current power supply voltage signal with a changed voltage, and the direct current power supply voltage signal is converted into a power supply voltage signal with a fixed voltage through the second conversion module 107 and the third conversion module 108, so as to supply power to the voltage control module 104 and the system control module 102, and provide for the voltage division module 105 to sample and divide.
One end of the second conversion module 107 is connected to the first conversion module 103, and the other end is connected to the voltage control module 104, and is configured to receive the dc power supply voltage signal with a variable voltage output by the first conversion module 103, convert the received dc power supply voltage signal with a variable voltage into a power supply voltage signal with a fixed voltage, and output the power supply voltage signal to the voltage control module 104 to supply power to the voltage control module 104.
The power supply terminal of the voltage control module 104 is connected to the second conversion module 107, and the control terminal is connected to the first conversion module 103, and is configured to receive the power supply voltage signal with the fixed voltage output by the second conversion module 107, so as to operate, and output a control signal to the first conversion module 103, so as to control the voltage variation of the power supply voltage signal output by the first conversion module 103.
One end of the third conversion module 108 is connected to the first conversion module 103, and the other end is connected to the system control module 102, and is configured to receive the dc power supply voltage signal with a variable voltage output by the first conversion module 103, convert the received dc power supply voltage signal with a variable voltage into a power supply voltage signal with a fixed voltage, and output the power supply voltage signal to the system control module 102 to supply power to the system control module 102.
One end of the voltage dividing module 105 is connected to the output end of the first conversion module 103, and the other end is connected to the receiving end of the system control module 102, and is configured to receive the dc power supply voltage signal with the voltage change output by the first conversion module 103, sample and divide the voltage of the dc power supply voltage signal, and transmit the sampled and divided power supply voltage signal to the receiving end of the system control module 102, thereby implementing carrier transmission.
In the above-mentioned dc carrier communication system 100, the voltage control module 104 controls the voltage change of the dc power voltage signal output by the first conversion module 103 to realize the change of the power voltage signal output by the power module 101, and the changed power voltage signal is sampled and divided and then sent to the receiving end of the system control module 102, thereby realizing the carrier transmission of the power voltage signal.
Fig. 2 is a circuit diagram of the dc carrier communication system shown in fig. 1. Referring to fig. 2, the power module 101 may be a battery, and a 220V ac power voltage signal is output by the battery, converted by the first conversion module 103, sampled and divided by the voltage division module 105, and then sent to the receiving end of the system control module 102, so as to implement carrier transmission of the power voltage signal.
The first conversion module 103 includes an AC-DC switching power supply circuit, which converts the received AC power supply voltage signal into a DC power supply voltage signal, and outputs the DC power supply voltage signal with a varying voltage under the control of the voltage control module 104.
The voltage control module 104 may adopt a controller MCU-B, and the controller MCU-B controls the output voltage variation of the AC-DC AC-to-DC switching power supply circuit to realize the variation of the power supply voltage.
The second conversion module 107 includes a DC-DC converter, and converts the received DC power voltage signal with a varying voltage into a DC power voltage signal with a fixed voltage through the DC-DC converter, and outputs the DC power voltage signal to the voltage control module 104 to supply power to the voltage control module 104.
The third conversion module 108 includes a DC-DC converter, and converts the received DC power voltage signal with a varying voltage into a DC power voltage signal with a fixed voltage through the DC-DC converter, and outputs the DC power voltage signal to the system control module 102 to supply power to the system control module 102.
The voltage dividing module 105 includes a first resistor R1 and a second resistor R2 connected in series, one end of the first resistor R1 and the second resistor R2 connected in series is connected to the AC-DC AC-to-DC switching power supply circuit, and the other end is grounded, a common connection point of the first resistor R1 and the second resistor R2 is further connected to an analog-to-digital conversion receiving terminal AD of the system control module 102, and is configured to sample a DC power supply voltage signal of a voltage change output by the AC-DC AC-to-DC switching power supply circuit and divide the voltage signal, and send the sampled and divided power supply voltage signal to the analog-to-digital conversion receiving terminal AD of the system control module 102, thereby implementing carrier transmission.
The system control module 102 may adopt a controller MCU-a, and receive the sampled and divided power supply voltage signal through an analog-to-digital conversion receiving end AD of the controller MCU-a to realize its control functions, including controlling the motor operation, the fan rotation, etc. through the controller MCU-a.
In this embodiment, the controller MCU-A and the controller MCU-B may be respectively a single chip microcomputer.
In the direct current carrier communication system 100, the controller MCU-B controls the voltage change of the direct current power supply voltage signal output by the AC-DC alternating current to direct current switching power supply circuit to realize the change of the power supply voltage signal output by the battery, and the changed power supply voltage signal is sampled and divided by the two resistors connected in series and then sent to the receiving end of the system controller MCU-a, thereby realizing the carrier transmission of the power supply voltage signal.
Fig. 3 is a block diagram of a dc carrier communication system according to the first embodiment. The above-mentioned dc carrier communication system 100 further includes an amplifying module 106, one end of the amplifying module 106 is connected to the voltage dividing module 105, and the other end is connected to the receiving end of the system control module 102, and is configured to receive the power voltage signal sampled and divided by the voltage dividing module 105, amplify the sampled and divided power voltage signal, and send the amplified signal to the receiving end of the system control module 102, thereby implementing carrier transmission.
Fig. 4 is a circuit diagram of the dc carrier communication system shown in fig. 3. The amplifying module 106 comprises a comparator, the inverting input end of the comparator is connected with the common connection point of the first resistor R1 and the second resistor R2, the non-inverting input end of the comparator is connected with the reference voltage Vref, the output end of the comparator is connected with the receiving end RX of the controller MCU-a, the sampled and divided power supply voltage signal is amplified by the comparator and then sent to the receiving end RX of the controller MCU-a, and therefore power supply voltage signal carrier transmission is achieved.
In the direct current carrier communication system 100, the controller MCU-B controls the voltage change of the direct current power supply voltage signal output by the AC-DC alternating current to direct current switching power supply circuit to realize the change of the power supply voltage signal output by the battery, the changed power supply voltage signal is sampled and divided by the two resistors connected in series, then the divided power supply voltage signal is amplified by the comparator, and the amplified power supply voltage signal is sent to the receiving end of the controller MCU-a, thereby realizing the carrier transmission of the power supply voltage signal.
Example two
Fig. 5 is a first block diagram of the dc carrier communication system disclosed in the second embodiment. The direct current carrier communication system 200 is used for converting a power supply signal output by a power supply module at a transmitting end into a voltage power supply signal with a variable power supply voltage VCC, and reducing the power supply voltage signal with the variable voltage into a useful voltage signal to be transmitted to a system control module at a receiving end, so that low-cost short-distance low-speed unidirectional power supply voltage signal carrier communication between the power supply module and the system control module is realized, a special power carrier chip is not needed, and the cost is low.
Referring to fig. 5, the dc carrier communication system 200 includes a power module 201, a system control module 202, a first conversion module 203, a voltage control module 204, a voltage division module 205, a second conversion module 207, a third conversion module 208, and a voltage conversion module 209.
And the power supply module 201 is located at the transmitting end and used for outputting an alternating current power supply voltage signal.
The first conversion module 203 comprises an input end and an output end, the input end of the first conversion module 203 is connected with the output end of the power supply module 201, the output end of the first conversion module 203 is connected with the second conversion module 207 and the voltage conversion module 209, and is used for receiving an alternating current power supply voltage signal output by the power supply module 201 and converting the received alternating current power supply voltage signal into a direct current power supply voltage signal, the direct current power supply voltage signal is converted into a power supply voltage signal with fixed voltage through the second conversion module 207, power is supplied to the system control module 202, and the direct current power supply voltage signal is further sent to the voltage conversion module 209.
One end of the second conversion module 207 is connected to the first conversion module 203, and the other end is connected to the voltage control module 204, and is configured to receive the dc power voltage signal output by the first conversion module 203, convert the received dc power voltage signal into a power voltage signal with a fixed voltage, and output the power voltage signal to the voltage control module 204 to supply power to the voltage control module 204.
The power end of the voltage control module 204 is connected to the second converting module 207, and the control end is connected to the voltage transforming module 209, and is configured to receive the power voltage signal with the fixed voltage output by the second converting module 207, so as to operate, and output a control signal to the voltage transforming module 209, so as to control the voltage variation of the power voltage signal output by the voltage transforming module 209.
The voltage conversion module 209 includes an input end, an output end and a control end, the input end of the voltage conversion module 209 is connected to the first conversion module 203, the control end is connected to the voltage control module 204, the output end is respectively connected to the voltage division module 205 and the third conversion module 208, and is configured to receive the dc power voltage signal output by the first conversion module 203, output the dc power voltage signal with a changed voltage under the control of the voltage control module 204, and output the dc power voltage signal with a changed voltage to the voltage division module 205 and the third conversion module 208, the dc power voltage signal with a changed voltage is converted into a power voltage signal with a fixed voltage by the third conversion module 108, and supplies power to the system control module 102, and the voltage division module 105 performs sampling voltage division on the dc power voltage signal with a changed voltage.
One end of the voltage dividing module 205 is connected to the output end of the voltage conversion module 209, and the other end is connected to the receiving end of the system control module 202, and is configured to receive the dc power supply voltage signal with the voltage change output by the voltage conversion module 209, sample and divide the voltage of the dc power supply voltage signal, and transmit the sampled and divided power supply voltage signal to the receiving end of the system control module 202, thereby implementing power supply voltage signal carrier transmission.
One end of the third conversion module 208 is connected to the output end of the voltage conversion module 209, and the other end is connected to the system control module 202, and is configured to receive the dc power supply voltage signal with a variable voltage output by the voltage conversion module 209, convert the received dc power supply voltage signal with a variable voltage into a power supply voltage signal with a fixed voltage, and output the power supply voltage signal to the system control module 202, so as to supply power to the system control module 202.
In the above dc carrier communication system 200, the voltage control module 204 controls the voltage change of the dc power voltage signal output by the voltage conversion module 209 to change the power voltage signal output by the power module 201, and the changed power voltage signal is sampled and divided and then sent to the receiving end of the system control module 202, thereby implementing carrier transmission.
Fig. 6 is a circuit diagram of the dc carrier communication system shown in fig. 5. Referring to fig. 6, the power module 201 may adopt a battery, and output a 220V ac power voltage signal through the battery, and after the voltage value is changed by the first conversion module 203 and the voltage value is changed by the voltage conversion module 209 and the voltage is sampled and divided by the voltage division module 205, the voltage signal is sent to the receiving end of the system control module 202, so as to implement the carrier transmission of the power voltage signal.
The first conversion module 203 comprises an AC-DC AC-to-DC switching power supply circuit, which converts the received AC power supply voltage signal into a DC power supply voltage signal and provides the voltage conversion module 209 and the second conversion module 207 with the DC power supply voltage signal.
The voltage control module 204 may adopt a controller MCU-B, and the controller MCU-B controls the output voltage of the voltage transformation module 209 to implement the change of the power supply voltage.
The second conversion module 207 includes a DC-DC converter, and converts the received DC power voltage signal into a power voltage signal with a fixed voltage through the DC-DC converter, and outputs the power voltage signal to the voltage control module 204 to supply power to the voltage control module 204.
The third conversion module 208 includes a DC-DC converter, and converts the received DC power voltage signal with a varying voltage into a power voltage signal with a fixed voltage through the DC-DC converter, and outputs the power voltage signal to the system control module 202 to supply power to the system control module 202.
The voltage conversion module 209 comprises a diode D1 and a triode MOS which are connected in parallel, one end of the diode D1 and the triode MOS which are connected in parallel is connected with a voltage output end of the AC-DC alternating current to direct current switching power supply circuit, the other end of the diode D1 and the triode MOS are connected with the third conversion module 208 and the voltage division module 205, and a control end of the triode MOS is also connected with a control signal output end of the controller MCU-B and is used for controlling the on and off of the triode MOS through the controller MCU-B, so that the voltage output by the diode D1 and the triode MOS which are connected in parallel is changed, and the voltage change of the direct current power supply voltage signal output by the voltage conversion module 209 is realized.
The voltage dividing module 205 includes a first resistor R1 and a second resistor R2 connected in series, one end of the first resistor R1 and the second resistor R2 connected in series is connected to the other end of the diode D1 and the triode MOS connected in parallel, the other end is grounded, a common connection point of the first resistor R1 and the second resistor R2 is further connected to an analog-to-digital conversion receiving end AD of the system control module 202, and is configured to sample a dc power supply voltage signal of a voltage change output by the diode D1 and the triode MOS connected in parallel and divide the voltage signal, and send the sampled and divided power supply voltage signal to the analog-to-digital conversion receiving end AD of the system control module 202, thereby implementing power supply voltage signal carrier transmission.
The system control module 202 may adopt a controller MCU-a, and receive the sampled and divided power voltage signal through an analog-to-digital conversion receiving end AD of the controller MCU-a to realize its control functions, including controlling the motor operation, the fan rotation, etc. through the controller MCU-a.
In this embodiment, the controller MCU-A and the controller MCU-B may be respectively a single chip microcomputer.
In the above dc carrier communication system 200, the controller MCU-B controls the switching of the transistor MOS to change the voltage of the dc power voltage signal output from the parallel diode D1 and the transistor MOS circuit, so as to change the power voltage signal output from the battery, and the changed power voltage signal is sampled and divided by the two resistors connected in series and then sent to the receiving terminal of the system controller MCU-a, thereby realizing the carrier transmission of the power voltage signal.
Fig. 7 is a block diagram of a dc carrier communication system disclosed in the second embodiment. The above-mentioned dc carrier communication system 200 further includes an amplifying module 206, one end of the amplifying module 206 is connected to the voltage dividing module 205, and the other end is connected to the receiving end of the system control module 202, and is configured to receive the power voltage signal sampled and divided by the voltage dividing module 205, amplify the sampled and divided power voltage signal, and send the amplified signal to the receiving end of the system control module 202, thereby implementing the power voltage signal carrier transmission.
Fig. 8 is a circuit diagram of the dc carrier communication system shown in fig. 7. The amplifying module 206 comprises a comparator, an inverting input end of the comparator is connected with a common connection point of the first resistor R1 and the second resistor R2, a non-inverting input end of the comparator is connected with the reference voltage Vref, an output end of the comparator is connected with the receiving end RX of the controller MCU-a, and the sampled and divided power supply voltage signal is amplified by the comparator and then sent to the receiving end RX of the controller MCU-a, so that power supply voltage signal carrier transmission is realized.
In the above dc carrier communication system 200, the controller MCU-B controls the switching of the transistor MOS to change the voltage of the dc power voltage signal output from the parallel diode D1 and the transistor MOS circuit, so as to change the power voltage signal output from the battery, sample and divide the voltage of the changed power voltage signal by the two resistors connected in series, amplify the voltage signal by the comparator, and send the amplified power voltage signal to the receiving end of the controller MCU-a, thereby realizing the carrier transmission of the power voltage signal.
The direct current carrier communication system 200 directly converts the power supply voltage signal into the voltage variation of the power supply, and transmits the power supply signal through the voltage variation, and has the advantages of simple circuit, low cost and reliable transmission.
EXAMPLE III
The third embodiment discloses an apparatus applying the above-mentioned dc carrier communication system 100. The following description will be made in detail by taking this device as an example of a fan.
Fig. 9 is a mechanism diagram of the fan 300. The fan 300 includes a base 301, a handpiece 302, and a body 303 coupled between the base 301 and the handpiece 302.
Referring to fig. 1 to 4, the dc carrier communication system 100 includes a power module 101, a system control module 102, a first conversion module 103, a voltage control module 104, a voltage dividing module 105, a second conversion module 107, a third conversion module 108, and an amplification module 106, where the power module 101 is disposed on a base 301, the system control module 102 is disposed on a handpiece 302, the first conversion module 103, the voltage control module 104, the voltage dividing module 105, the second conversion module 107, the third conversion module 108, and the amplification module 109 are all disposed on the base 301, the power module 101 outputs an ac power voltage signal, the ac power voltage signal enters the first conversion module 103, the first conversion module 103 converts the received ac power voltage signal into a dc power voltage signal, and outputs the dc power voltage signal with a voltage change under the control of the voltage control module 104, and the dc power voltage signal with a fixed voltage is converted by the second conversion module 107 and the third conversion module 108, and supplies power to the voltage control module 104 and the system control module 102, and supplies the voltage dividing module 105 to sample and divide voltage. The voltage dividing module 105 receives the dc power voltage signal with the voltage change output by the first conversion module 103, samples and divides the voltage, and amplifies the sampled and divided dc power voltage signal by the amplifying module 106 and transmits the amplified signal to the receiving end of the system control module 102, thereby implementing the carrier transmission of the dc power voltage signal. The operation of the handpiece is controlled by the system control module 102.
The electric fan 300 converts the power supply voltage signal output by the power supply module 101 into the voltage change of the power supply, and transmits the voltage signal to the system control module 102 through the voltage change, so that the system control module 102 can work at a voltage, and the electric fan has the advantages of simple integral circuit, low cost and reliable transmission.
Example four
The fourth embodiment discloses an apparatus applying the above-mentioned dc carrier communication system 200. The following description will be made in detail by taking this device as an example of a fan.
Fig. 9 is a mechanism diagram of the fan 300. The fan 300 includes a base 301, a head 302, and a body 303 coupled between the base 301 and the head 302.
Referring to fig. 5 to 8, the dc carrier communication system 200 includes a power module 201, a system control module 202, a first conversion module 203, a voltage control module 204, a voltage dividing module 205, a second conversion module 207, a third conversion module 208, and an amplification module 209, wherein the power module 201 is disposed on a base 301, the system control module 202 is disposed on a handpiece 302, the first conversion module 203, the voltage control module 204, the voltage dividing module 205, the amplification module 206, the second conversion module 207, the third conversion module 208, and the voltage conversion module 209 are disposed on the base 301, the power module 201 outputs an ac power voltage signal, the ac power voltage signal enters the first conversion module 203, the first conversion module 103 converts the received ac power voltage signal into a dc power voltage signal, and transmits the dc power voltage signal to the voltage conversion module 209, and the voltage conversion module 209 outputs a dc power voltage signal with a voltage change under the control of the voltage control module 204, and supplies the voltage dividing module 205 to sample and divide voltage. The voltage dividing module 205 receives the changed dc power voltage signal output by the voltage converting module 209, samples and divides the voltage signal, and amplifies the sampled and divided dc power voltage signal by the amplifying module 206 and transmits the amplified signal to the receiving end of the system control module 202, thereby implementing carrier transmission. The operation of the handpiece is controlled by a system control module 202.
The electric fan 300 converts the power supply voltage signal output by the power supply module 201 into the voltage change of the power supply, and transmits the voltage signal to the system control module 202 through the voltage change to supply the working voltage of the system control module 202, so that the whole circuit is simple, the cost is low, and the transmission is reliable.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A direct current carrier communication system, comprising:
the power supply module is used for outputting an alternating current power supply voltage signal;
the first conversion module is used for receiving an alternating current power supply voltage signal output by the power supply module and converting the received alternating current power supply voltage signal into a direct current power supply voltage signal, and comprises an input end, a control end and an output end, wherein the input end of the first conversion module is connected with the power supply module; the control end of the first conversion module is connected with a voltage control module and used for outputting a direct-current power supply voltage signal with voltage change under the control of the voltage control module; the output end of the first conversion module is connected with the voltage division module and is used for sending the direct-current power supply voltage signal with the changed voltage to the voltage division module;
the voltage division module is used for receiving the direct-current power supply voltage signal with the voltage change output by the first conversion module, sampling and dividing the voltage of the direct-current power supply voltage signal, and sending the sampled and divided direct-current power supply voltage signal to the system control module;
and the system control module is used for receiving the direct-current power supply voltage signal transmitted by the voltage division module and realizing power supply voltage signal transmission.
2. The dc carrier communication system of claim 1, further comprising a second conversion module and a third conversion module;
one end of the second conversion module is connected with the first conversion module, and the other end of the second conversion module is connected with the voltage control module, and the second conversion module is used for receiving the voltage-variable direct-current power supply voltage signal output by the first conversion module, converting the received voltage-variable direct-current power supply voltage signal into a fixed-voltage direct-current power supply voltage signal, and outputting the fixed-voltage direct-current power supply voltage signal to the voltage control module;
one end of the third conversion module is connected with the first conversion module, and the other end of the third conversion module is connected with the system control module, and the third conversion module is used for receiving the direct-current power supply voltage signal with the voltage change output by the first conversion module, converting the received direct-current power supply voltage signal with the voltage change into a direct-current power supply voltage signal with a fixed voltage, and outputting the direct-current power supply voltage signal to the system control module.
3. The dc carrier communication system according to claim 1, wherein the voltage dividing module includes a first resistor and a second resistor connected in series, one end of the first resistor and the second resistor connected in series is connected to the first conversion module, the other end is grounded, and a common connection point of the first resistor and the second resistor is connected to a receiving end of the system control module, and is configured to sample and divide the dc power supply voltage signal with the voltage change output by the first conversion module, and send the sampled and divided power supply voltage signal to the receiving end of the system control module.
4. The dc carrier communication system according to claim 3, further comprising an amplifying module, wherein one end of the amplifying module is connected to the common connection point of the first resistor and the second resistor, and the other end of the amplifying module is connected to the receiving end of the system control module, and is configured to receive the power supply voltage signal sampled and divided by the first resistor and the second resistor, amplify the sampled and divided power supply voltage signal, and send the amplified power supply voltage signal to the receiving end of the system control module.
5. A direct current carrier communication system, comprising:
the power supply module is used for outputting an alternating current power supply voltage signal;
the input end of the first conversion module is connected with the power supply module, the output end of the first conversion module is connected with the voltage conversion module and used for receiving the alternating current power supply voltage signal output by the power supply module, converting the received alternating current power supply voltage signal into a direct current power supply voltage signal and sending the direct current power supply voltage signal to the voltage conversion module;
the voltage conversion module comprises an input end, an output end and a control end, wherein the input end of the voltage conversion module is connected with the first conversion module and is used for receiving the direct-current power supply voltage signal output by the first conversion module; the control end of the voltage conversion module is connected with a voltage control module and is used for outputting a direct-current power supply voltage signal with variable voltage under the control of the voltage control module; the output end of the voltage conversion module is connected with the voltage division module and is used for sending a direct-current power supply voltage signal with changed voltage to the voltage division module;
the voltage division module is used for receiving the DC power supply voltage with the voltage change output by the voltage conversion module, sampling and dividing the voltage, and sending the DC power supply voltage signal after sampling and dividing the voltage to the system control module;
and the system control module is used for receiving the direct-current power supply voltage signal transmitted by the voltage division module and realizing power supply voltage signal transmission.
6. The DC carrier communication system of claim 5, further comprising a second conversion module and a third conversion module;
one end of the second conversion module is connected with the first conversion module, and the other end of the second conversion module is connected with the voltage control module and is used for receiving the direct-current power supply voltage signal output by the first conversion module, converting the received direct-current power supply voltage signal into a direct-current power supply voltage signal with fixed voltage and outputting the direct-current power supply voltage signal to the voltage control module;
one end of the third conversion module is connected with the voltage conversion module, and the other end of the third conversion module is connected with the system control module and is used for receiving the voltage-variable direct-current power supply voltage signal output by the voltage conversion module, converting the received voltage-variable direct-current power supply voltage signal into a fixed-voltage direct-current power supply voltage signal and outputting the fixed-voltage direct-current power supply voltage signal to the system control module.
7. The DC carrier communication system according to claim 6, wherein the voltage control module comprises a parallel diode and a parallel triode, one end of the parallel diode and the parallel triode is connected with the first conversion module, and the other end of the parallel diode and the parallel triode is connected with the third conversion module and the voltage division module.
8. The dc carrier communication system according to claim 7, wherein the voltage dividing module includes a first resistor and a second resistor connected in series, one end of the first resistor and the second resistor connected in series is connected to the other end of the diode and the triode connected in parallel, the other end of the first resistor and the second resistor connected in series is grounded, a common connection point of the first resistor and the second resistor is connected to a receiving end of the system control module, and is configured to sample and divide the dc power voltage signal of the voltage change output by the diode and the triode connected in parallel, and send the sampled and divided power voltage signal to the receiving end of the system control module.
9. The dc carrier communication system according to claim 8, further comprising an amplifying module, wherein one end of the amplifying module is connected to a common node of the first resistor and the second resistor, and the other end of the amplifying module is connected to a receiving end of the system control module, and configured to receive the power supply voltage signal sampled and divided by the first resistor and the second resistor, amplify the sampled and divided power supply voltage signal, and send the amplified power supply voltage signal to the receiving end of the system control module.
10. An electrical apparatus comprising a direct current carrier communication system as claimed in any one of claims 1 to 9.
11. The electrical device of claim 10, wherein the device is an electrical fan.
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| CN202110049492.3A CN112910504B (en) | 2021-01-14 | 2021-01-14 | Direct current carrier communication system and device |
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