CN104702315A - Carrier communication circuit and electronic device - Google Patents
Carrier communication circuit and electronic device Download PDFInfo
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- CN104702315A CN104702315A CN201510103826.5A CN201510103826A CN104702315A CN 104702315 A CN104702315 A CN 104702315A CN 201510103826 A CN201510103826 A CN 201510103826A CN 104702315 A CN104702315 A CN 104702315A
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- carrier communication
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- communication circuit
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Abstract
The invention discloses a carrier communication circuit and an electronic device. The carrier communication circuit comprises a signal sending circuit, a signal receiving circuit and a power circuit; the signal sensing circuit is used for receiving a signal from a controller and loading to the power circuit; the power circuit is equipped with a power wiring terminal which is connected to other carrier communication circuit; the signal receiving circuit is used for receiving a carrier signal in the power circuit and coupling and outputting the carrier signal to the controller to be processed. According to the carrier communication circuit, the signal is loaded into a DC power circuit, so that the carrier communication circuits can communicate with each other through a DC power line through two power connecting terminals, and as a result, the communication of the electronic products with the carrier communication circuit can be achieved; the problem that the current electronic product can communicate through a bus by using a large amount of pogpin interfaces can be greatly reduced, and therefore, the cost of the electronic product can be decreased, and the size of the electronic product can be reduced.
Description
Technical field
The invention belongs to telecommunication circuit technical field, specifically, relate to a kind of carrier communication circuit and electronic equipment.
Background technology
Traditional power carrier communication refers to and utilizes existing power line, by carrier system, analog signal or digital signal is carried out the technology of high-speed transfer.Its maximum feature does not need again to set up network, as long as live wire, just can carry out data biography; Be mainly used in long-distance meter-reading system, remote monitor system for road lamp and industrial intelligent etc.The application of existing power line carrier, PLC, need to arrange carrier communication module at each transceiver terminal respectively, for resolving and sending carrier signal, but in consumer small-sized electronic product particularly mobile electronic product, the application of carrier communication principle is fresh to be related to less, between current consumer small-sized electronic product, the main pogpin that uses realizes communication, because the manufacturing cost of pogpin is higher, such as adopt the mode of bus communication simultaneously, the volume of consumer electronics product when causing pogpin quantity more, can be increased.
Therefore, be necessary to propose a kind of low cost and be easy to realize method to reduce the carrier communication circuit of the quantity of the pogpin in consumer electronics product.
Summary of the invention
The present invention needs to adopt a large amount of pogpin pin to solve existing consumer small-sized electronic product communication, increase the technical problem of cost and volume, propose a kind of carrier communication circuit, be especially applicable to the communication in consumer electronics product, can reduce its communication adopt the quantity of pogpin.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of carrier communication circuit, comprise signal sending circuit, signal receiving circuit and power circuit, described signal sending circuit receives the signal that controller sends, and be loaded in described power circuit, described power circuit has the power supply terminal for connecting other carrier communication circuits, described signal receiving circuit receives the carrier signal in power circuit, and is processed to controller by described carrier signal coupling output.
Further, described signal sending circuit comprises NPN triode, the described base stage of NPN triode is connected with the signal output part of controller, and the collector electrode of described NPN triode connects described power supply input circuit by the second resistance, and the emitter of described NPN triode connects earth terminal.
Further again, be provided with the Schottky diode for preventing power supply anti-inserted in described power circuit.
Further, described signal receiving circuit comprises coupling capacitance, and the signal input part of described coupling capacitance is connected with described power circuit, and the signal output part of described coupling capacitance is connected with the signal input part of controller.
Further, described signal receiving circuit also comprises the biasing circuit for providing bias voltage for described coupling capacitance, and the signal output part of described coupling capacitance is connected with described biasing circuit.
Preferably, described biasing circuit comprises the first biasing resistor and the second biasing resistor, and the signal output part of described coupling capacitance connects DC power supply by the first biasing resistor, and the signal output part of described coupling capacitance connects earth terminal by the second biasing resistor.
Or described signal sending circuit comprises NMOS tube, the grid of described NMOS tube is connected with the signal output part of controller, and the drain electrode of described NMOS tube connects described power supply input circuit by the second resistance, and the source electrode of described NMOS tube connects earth terminal.
Based on any one above-mentioned carrier communication circuit, the present invention proposes a kind of electronic equipment simultaneously, comprises the carrier communication circuit above described in any one.
Compared with prior art, advantage of the present invention and good effect are: carrier communication circuit of the present invention, by by signal loading in DC power supply circuit, achieve between carrier communication circuit and communicated by direct current supply line, only need adopt two power connector end, and then can realize that there is communication between this carrier communication circuit electronic product respectively, greatly reduce current electronic product needs a large amount of pogpin interface problem by bus communication etc., and then be conducive to reducing the cost of electronic product and reducing the volume of electronic product.
After reading the detailed description of embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of functional-block diagram of carrier communication circuit proposed by the invention;
Functional-block diagram when Fig. 2 is the realization communication of carrier communication circuit proposed by the invention;
Fig. 3 is a kind of circuit theory diagrams of carrier communication circuit proposed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of carrier communication circuit, as shown in Figure 1, comprise signal sending circuit, signal receiving circuit and power circuit, described signal sending circuit receives the signal that controller sends, and is loaded in described power circuit, and described power circuit has the power supply terminal for connecting other carrier communication circuits, described signal receiving circuit receives the carrier signal in power circuit, and is processed to controller by described carrier signal coupling output.In the carrier communication circuit of the present embodiment, signal sending circuit by signal loading that controller is sent in DC power supply circuit, when this DC power supply circuit connects other carrier communication circuits, achieve between two carrier communication circuits and utilize transmitting DC Power Line Communication, if two or more electronic product is equipped with this carrier communication circuit respectively, and then can realize being communicated by direct current supply line between electronic product, only need adopt two power connector end, current electronic product needs a large amount of pogpin interface problem by bus communication etc. can be greatly reduced, and then be conducive to reducing the cost of electronic product and reducing the volume of electronic product.
As shown in Figure 2, Principle of Communication block diagram between two carrier communication circuits in the present embodiment, comprise carrier communication circuit A and carrier communication circuit B, carrier communication circuit A and carrier communication circuit B has power supply terminal pogpin1 respectively, both power supply terminal pogpin1 need connection just can communicate between the two, for convenience of description, be A end below by title carrier communication circuit A, carrier communication circuit B is B end, the signal sending circuit of A end receives the signal that the controller that is connected with it sends, and in the power circuit that this signal loading is held to A, because the power circuit of A end holds power circuit to be connected by power supply terminal pogpin1 with B, therefore, the carrier signal that A end sends can be received in the power circuit of B end, and this carrier signal is coupled and exports the controller process of B end to by the signal receiving circuit of B end, vice versa, B end also can as transmitting terminal, by the signal loading of its place end in power circuit, A end receives this signal as receiving terminal, as can be seen from Fig. 2, any one end equally also can receive the signal himself sent, such as, the signal receiving circuit that A holds can receive the signal that himself place end (also namely A holds) sends equally, therefore, A holds the controller connected the signal that himself receiving sends can be filtered out, B end also adopts same process, do not repeat at this, it should be noted that, although only illustrate the carrier communication principle with communicating pair (side a and b) in this enforcement, carrier communication circuit of the present invention is not limited to the carrier communication of above-mentioned two sides, can be tripartite and in many ways between carrier communication.
As a preferred embodiment, as shown in Figure 3, to illustrate out a kind of circuit theory diagrams, for convenience of description, the present embodiment is still described with communicating pair side a and b, wherein, the signal sending circuit of A end comprises NPN triode Q1, the described base stage of NPN triode Q1 is connected with the signal output part CTRL1 of its place side controller, and the collector electrode of described NPN triode Q1 connects the power supply input circuit of A end by resistance R2, the emitter of described NPN triode Q1 connects earth terminal.The signal sending circuit of B end comprises NPN triode Q2, the described base stage of NPN triode Q2 is connected with the signal output part CTRL2 of its place side controller, the collector electrode of described NPN triode Q2 connects the power supply input circuit of B end by resistance R7, the emitter of described NPN triode Q2 connects earth terminal, in the present embodiment, power circuit may be used for the direct current that reception rectification circuit sends over, also can when being connected with other carrier communication circuits, receive the direct current that other carrier communication circuits send, such as, in the present embodiment, the power circuit of A end is for receiving the DC power supply VCC2_IN coming from rectification circuit and export, after A end and B are held and are connected by pogpin1, electric current wherein lead up to B end power circuit export from its DC power output end VCC2_OUT, an other road is loaded into the collector electrode of NPN triode Q2, for NPN triode Q2 provides operating voltage.
As a preferred embodiment, in described power circuit, being provided with the Schottky diode for preventing power supply anti-inserted, as the D1 in D2 and the B end in A end, all for preventing power supply from connecing instead, playing the effect of NPN triode in guard signal transtation mission circuit.
As shown in Figure 3, the signal receiving circuit in the present embodiment comprises the C2 of C1 and the A end that coupling capacitance is held as B, and the signal input part of described coupling capacitance is connected with described power circuit, and the signal output part of described coupling capacitance is connected with the signal input part of controller.
In order to provide biased operating voltage for coupling capacitance, signal receiving circuit also comprises the biasing circuit for providing bias voltage for described coupling capacitance, and the signal output part of coupling capacitance is connected with biasing circuit.As shown in Figure 3, in the present embodiment, in A end, described biasing circuit comprises the first biasing resistor R3 and the second biasing resistor R4, in B end, biasing resistor is respectively R9 and R10, for B end, the signal output part of described coupling capacitance C1 connects DC power supply by the first biasing resistor R9, and the signal output part of coupling capacitance C1 connects earth terminal by the second biasing resistor R10.
The operation principle of this carrier communication circuit is: when side a and b is connected by pogpin1 with pogpin2, and the A end being first connected with charge power supply VCC2_IN can realize the charging of B end.After charge power supply voltage stabilization, NPN triode Q1 is in cut-off state, and the voltage U 1=VCC2_OUT-VDZ(of pogpin1 wherein VDZ is the pressure drop of Schottky diode D2).
When the CTRL1 port that A side controller connects sends a high level, NPN triode Q1 is in conducting state, voltage U 2=(VCC2_OUT-VDZ) the * R2/(R1+R2 of pogin1); The change in voltage of pogpin1 by coupling capacitance C1, C2, the variable quantity △ U=(U1-U2 by this voltage) output to INT1, INT2 end that controller connects.If A end sends control signal and can be received by side a and b simultaneously, by software, A end can judge that INT1 holds the invalidating signal being received from end and signaling, and the signal that the INT2 termination of B end is received is effective.The variable quantity that 9th resistance R9, the tenth resistance R10 are voltage provides direct current biasing, U=VCC1*R10/(R9+R10).Utilize charge power supply line to realize the control of transmitting terminal to receiving terminal, decrease the pogpin needed for control connection.
In like manner, when the CTRL2 port that B side controller connects sends a high level, NPN triode Q2 is in conducting state, voltage U 2 '=(VCC2_OUT-VDZ) the * R7/(R1+R7 of pogin1); The change in voltage of pogpin1 by coupling capacitance C1, C2, the variable quantity △ U=(U1-U2 ' by this voltage) output to INT1, INT2 end that controller connects.Send because control signal is receiving terminal, judge that the signal that INT1 termination is received is effective by software, the invalidating signal that INT2 termination is received.The variable quantity that R3, R4 are voltage provides direct current biasing, U '=VCC1*R4/(R3+R4).Utilize charge power supply line to realize the control of receiving terminal to transmitting terminal, decrease the pogpin needed for control connection.
It should be noted that, the signal sending circuit of the present embodiment is not limited to adopt NPN triode to realize, the NMOS tube of voltage driven can also be adopted to realize, when employing NMOS tube is that described signal sending circuit comprises NMOS tube, the grid of described NMOS tube is connected with the signal output part of controller, the drain electrode of described NMOS tube connects described power supply input circuit by the second resistance, and the source electrode of described NMOS tube connects earth terminal.
Embodiment two, based on any one carrier communication circuit in embodiment one, the present embodiment proposes a kind of electronic product adopting above-mentioned carrier communication circuit, can see shown in Fig. 1-3, carrier communication circuit B is set in electronic product, carrier communication circuit A is set in the charger of this electronic product, achieves the direct current carrier communication between electronic product and its charger.For bluetooth earphone, bluetooth earphone can use as the wireless headset of movement, by arranging carrier communication circuit B in the charging circuit of bluetooth earphone, the controller that carrier communication circuit B connects can be the process chip of bluetooth earphone, carrier communication circuit A is set in the charger of bluetooth earphone, the controller that carrier communication circuit A connects can be the process chip of charger, after bluetooth earphone is connected by pogpin1 with charger, the power circuit of carrier communication circuit A is for receiving the DC power supply VCC2_IN coming from rectification circuit and export, electric current is wherein leaded up to the power circuit of carrier communication circuit B and is exported from its DC power output end VCC2_OUT, for charging bluetooth earphone, received the signal loaded in power circuit by signal receiving circuit simultaneously, or export in signal loading to power circuit, achieve the communication of bluetooth earphone and charger, if store the words of audio frequency in charger, audio signal is sent in bluetooth earphone by charging electric wire and plays, thus achieve the function of bluetooth earphone as audio amplifier.
Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Claims (8)
1. a carrier communication circuit, it is characterized in that: comprise signal sending circuit, signal receiving circuit and power circuit, described signal sending circuit receives the signal that controller sends, and be loaded in described power circuit, described power circuit has the power supply terminal for connecting other carrier communication circuits, described signal receiving circuit receives the carrier signal in power circuit, and is processed to controller by described carrier signal coupling output.
2. carrier communication circuit according to claim 1, it is characterized in that: described signal sending circuit comprises NPN triode, the described base stage of NPN triode is connected with the signal output part of controller, the collector electrode of described NPN triode connects described power supply input circuit by the second resistance, and the emitter of described NPN triode connects earth terminal.
3. carrier communication circuit according to claim 2, is characterized in that: be provided with the Schottky diode for preventing power supply anti-inserted in described power circuit.
4. carrier communication circuit according to claim 3, it is characterized in that: described signal receiving circuit comprises coupling capacitance, the signal input part of described coupling capacitance is connected with described power circuit, and the signal output part of described coupling capacitance is connected with the signal input part of controller.
5. carrier communication circuit according to claim 4, is characterized in that: described signal receiving circuit also comprises the biasing circuit for providing bias voltage for described coupling capacitance, and the signal output part of described coupling capacitance is connected with described biasing circuit.
6. carrier communication circuit according to claim 5, it is characterized in that: described biasing circuit comprises the first biasing resistor and the second biasing resistor, the signal output part of described coupling capacitance connects DC power supply by the first biasing resistor, and the signal output part of described coupling capacitance connects earth terminal by the second biasing resistor.
7. carrier communication circuit according to claim 1, it is characterized in that: described signal sending circuit comprises NMOS tube, the grid of described NMOS tube is connected with the signal output part of controller, the drain electrode of described NMOS tube connects described power supply input circuit by the second resistance, and the source electrode of described NMOS tube connects earth terminal.
8. an electronic equipment, is characterized in that: comprise the carrier communication circuit as described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103826.5A CN104702315B (en) | 2015-03-10 | 2015-03-10 | A kind of carrier communication circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103826.5A CN104702315B (en) | 2015-03-10 | 2015-03-10 | A kind of carrier communication circuit and electronic equipment |
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| Publication Number | Publication Date |
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| CN104702315A true CN104702315A (en) | 2015-06-10 |
| CN104702315B CN104702315B (en) | 2017-07-07 |
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| CN201510103826.5A Active CN104702315B (en) | 2015-03-10 | 2015-03-10 | A kind of carrier communication circuit and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108964706A (en) * | 2018-06-27 | 2018-12-07 | 广州视源电子科技股份有限公司 | Power line method for transmitting signals, device and transmission electrical equipment |
| CN109510267A (en) * | 2018-11-30 | 2019-03-22 | 歌尔股份有限公司 | The charging method of wireless headset, charging box, wireless headset charging system and wireless headset |
| CN111601218A (en) * | 2020-02-10 | 2020-08-28 | 珠海市杰理科技股份有限公司 | Audio playing switching method, Bluetooth loudspeaker box and Bluetooth audio playing device |
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| CN204442372U (en) * | 2015-03-10 | 2015-07-01 | 青岛歌尔声学科技有限公司 | A kind of carrier communication circuit and electronic equipment |
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| CN2828730Y (en) * | 2004-11-24 | 2006-10-18 | 北京铱钵隆芯科技有限责任公司 | Direct-current carrier communication interface for electronic detonator |
| US20060269001A1 (en) * | 2005-05-26 | 2006-11-30 | Sony Corporation, A Japanese Corporation | Ac plc to dc plc transceiver |
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| CN109510267A (en) * | 2018-11-30 | 2019-03-22 | 歌尔股份有限公司 | The charging method of wireless headset, charging box, wireless headset charging system and wireless headset |
| CN111601218A (en) * | 2020-02-10 | 2020-08-28 | 珠海市杰理科技股份有限公司 | Audio playing switching method, Bluetooth loudspeaker box and Bluetooth audio playing device |
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| CN104702315B (en) | 2017-07-07 |
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