CN115696679A - Power line carrier communication's aviation obstruction beacon - Google Patents
Power line carrier communication's aviation obstruction beacon Download PDFInfo
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- CN115696679A CN115696679A CN202211102244.1A CN202211102244A CN115696679A CN 115696679 A CN115696679 A CN 115696679A CN 202211102244 A CN202211102244 A CN 202211102244A CN 115696679 A CN115696679 A CN 115696679A
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Abstract
The invention discloses an aviation obstruction light for power line carrier communication, which comprises a light fixture, a battery pack and a synchronous power signal module, wherein the light fixture is provided with a light source and a driving module, and the driving module is used for driving the light source to be turned on or turned off; the battery pack supplies power to the lamp; the synchronous power supply signal module is used for controlling the battery pack to be charged or discharged through the power line when the power line does not have alternating current output, and simultaneously, the synchronous flashing light signal is transmitted through the power line so as to control each aviation obstruction light on the power line to be synchronously and coordinately flashed. Therefore, when the power line has no commercial power alternating current, the power can be supplied to the power line by controlling the battery pack, and the synchronous signal is loaded on the direct-current power supply, so that the synchronous signal of each barrier lamp can be received and transmitted while the synchronous power supply is supplied to the barrier lamps with other power supplies on the power line for charging, and synchronous coordination and flashing of a plurality of barrier lamps in a period of time can be ensured.
Description
Technical Field
The invention relates to the technical field of aviation obstruction lamps, in particular to an aviation obstruction lamp for power line carrier communication.
Background
The existing electric power obstruction light is connected with a power line, power can be supplied through a circuit line, alternating current of the circuit line can be used as a carrier medium of signals to transmit the signals, and the network arrangement of a wired network or a wireless network can be reduced.
The existing electric power obstruction light mainly realizes signal transmission through alternating current. In some cases, the ac power on the power line will typically result in no ac power on the power line due to power outage or lightning effects. Thus, the transmission of signals through the power line is impossible. Due to the interruption of the signal transmission, the problem that the barrier lamps in the same area cannot synchronously flash may be caused. When the signal indication is performed, since a plurality of obstacle lights in the same area generally need to be synchronously flashed to perform the signal indication, when a part of obstacle lights cannot normally operate and cannot be synchronized, the signal indication may be abnormally performed, or even incorrectly performed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to provide an aviation obstruction light for power line carrier communication.
In order to achieve the above object, an embodiment of the present invention provides an aviation obstruction light for power line carrier communication, including:
the lamp is provided with a lamp source and a driving module, and the driving module is used for driving the lamp source to be turned on or turned off;
the battery pack is connected with the lamp to supply power to the lamp;
the synchronous power supply signal module is respectively connected with the lamp, the battery pack and the power line and used for controlling the battery pack to be charged or discharged through the power line when the power line does not have alternating current output, and meanwhile, the synchronous flashing signal is transmitted through the power line so as to control each aviation obstruction light on the power line to synchronously coordinate and flash.
Further, according to an embodiment of the present invention, the synchronous power signal module includes:
the synchronous charging and discharging module is respectively connected with the power line and the battery pack so as to control the synchronous charging and discharging of the battery pack when the circuit line has no alternating current;
the synchronous signal transceiving module is connected with the power line and is used for transceiving the modulated synchronous signal through the power line;
the modulation and demodulation controller is respectively connected with the synchronous signal receiving and sending module, the synchronous charging and discharging module and the lamp, so that the synchronous charging and discharging module controls the battery pack to be charged and discharged through a power line, the synchronous signal receiving and sending module controls the modulated synchronous signal to be received and sent, meanwhile, the synchronous signal is modulated and demodulated, the demodulated synchronous signal is output to the lamp or the modulated signal is sent to the power line, and the aviation obstruction light is controlled to be synchronously coordinated and flashing.
Further, according to an embodiment of the present invention, the synchronous charging and discharging module includes:
the voltage sampling circuit is respectively connected with the power line and a voltage detection end of the modulation and demodulation controller, and is used for sampling the voltage on the power line and judging three states of direct current, alternating current or no power supply on the power line through the modulation and demodulation controller;
the synchronous charging voltage comparison circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, and compares the direct current with the voltage of the battery pack when the voltage on the power line is the direct current;
the synchronous charging and discharging control circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, and is used for charging the battery pack under the control of the modulation and demodulation controller when the voltage of the battery pack is lower than the direct current voltage of the power line; or when the power line has no alternating current and direct current, the battery pack is controlled to discharge.
Further, according to an embodiment of the present invention, the synchronous charging voltage comparison circuit includes:
the relay K1, wherein a first end of a channel of the relay K1 is connected with a power line;
a collector of the triode Q1 is connected with a first controlled end of the relay K1, a second controlled end of the relay K1 is connected with a power supply, an emitter of the triode Q1 is connected with a reference ground, and a base of the triode Q1 is also connected with a control end of the modulation and demodulation controller U3 through a resistor R5;
the positive phase input end of the comparator U1 is connected with the second end of the channel of the relay K1 through a diode D4, the reverse phase input end of the comparator U1 is connected with the positive end of the battery pack, and the output end of the comparator U1 is connected with a voltage sampling end of the modulation and demodulation controller U3.
Further, according to an embodiment of the present invention, the synchronous charge and discharge control circuit includes:
the drain electrode of the MOS switch tube Q3 is connected with the negative end of the battery pack through a current sampling resistor RS1, and the grid electrode of the MOS switch tube Q3 is connected with the discharge control end of the modulation-demodulation controller U3 through a resistor R11;
the drain electrode of the MOS switch tube Q4 is connected with the source electrode of the MOS switch tube Q3, the grid electrode of the MOS switch tube Q4 is connected with the charging control end of the modulation and demodulation controller U3 through a resistor R12, and the source electrode of the MOS switch tube Q4 is connected with the negative end of the power line;
the common channel end of the relay K2 is connected with a power line, and the first channel end of the relay K2 is connected with the positive end of the battery pack;
the second channel end of the relay K2 is connected with the positive end of the battery pack through the AC-DC voltage conversion circuit;
triode Q2, triode Q12's collecting electrode with relay K2's first controlled end is connected, relay K2's second controlled end is connected with power supply, triode Q2's projecting pole is connected with reference ground, triode Q2's base still through resistance R7 with a control end of modem controller U3 is connected.
Further, according to an embodiment of the present invention, the voltage sampling circuit includes:
a diode D3, an anode of the diode D3 being connected to the power line;
a resistor R9, wherein one end of the resistor R9 is connected with the cathode of the diode D3;
one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with a reference ground;
a transient diode D4, a cathode of the transient diode D4 is connected to the one end of the resistor R10, an anode of the transient diode D4 is connected to a reference ground, and a cathode of the transient diode D4 is further connected to a voltage detection end of the modem controller.
Further, according to an embodiment of the present invention, the synchronization signal transceiver module includes a synchronization signal receiving module and a synchronization signal transmitting module, and the synchronization signal receiving module includes: a signal attenuation control circuit and a first filter circuit, the signal attenuation control circuit comprising:
a diode D5, wherein the anode of the diode D5 is connected with a power line;
a transient diode D8, a cathode of the transient diode D8 is connected with a cathode of the diode D5, and an anode of the transient diode D8 is connected with a reference ground;
one end of the resistor R13 is connected with the cathode of the diode D5, and the other end of the resistor R13 is connected with the first filter circuit;
a resistor R14, one end of the resistor R14 being connected to the other end of the resistor R13, the other end of the resistor R14 being connected to a reference ground;
electronic switch K3, electronic switch K3's control end with a control end of modem controller U3 is connected, electronic switch K3's passageway one end with resistance R14 one end is connected, electronic switch K3's the other end pass through resistance R15 with resistance R14 the other end is connected.
Further, according to an embodiment of the present invention, the first filter circuit includes:
one end of the capacitor C2 is connected with the other end of the resistor R13;
one end of the capacitor C3 is connected with the other end of the capacitor C2, and the other end of the capacitor C3 is connected with a reference ground;
one end of the inductor L1 is connected with the other end of the capacitor C2, and the other end of the inductor L1 is connected with a reference ground;
one end of the resistor R16 is connected with the other end of the capacitor C2, and the other end of the resistor R16 is connected with a reference ground;
one end of the inductor L2 is connected with the other end of the capacitor C2;
one end of the capacitor C7 is connected with the other end of the inductor L2;
one end of the resistor R21 is connected with the other end of the capacitor C7, and the other end of the resistor R21 is connected with the demodulation signal input end of the modulation and demodulation controller U3.
Further, according to an embodiment of the present invention, the synchronization signal sending module includes an amplifying circuit and a second filter circuit, the amplifying circuit includes a signal amplifier U2, a non-inverting input terminal of the signal amplifier U2 is connected to the modulation signal output terminal of the modulation and demodulation controller U3 through a resistor R20, an inverting input terminal of the signal amplifier U2 is connected to a reference ground through a resistor R19, an inverting input terminal of the signal amplifier U2 is further connected to the output terminal of the signal amplifier U2 through a resistor R17, an inverting input terminal of the signal amplifier U2 is further connected to one end of a resistor R18, the other end of the resistor R18 is connected to one end of a channel of an electronic switch K4, the other end of the channel of the electronic switch K4 is connected to the output terminal of the signal amplifier U2, and a controlled terminal of the electronic switch K4 is further connected to one control terminal of the modulation and demodulation controller U3;
the second filter circuit includes:
one end of the capacitor C4 is connected with a power line;
an inductor L3, wherein one end of the inductor L3 is connected with the other end of the capacitor C4, and the other end of the inductor L3 is connected with a reference ground;
one end of the capacitor C5 is connected with the other end of the capacitor C4, and the other end of the capacitor C5 is connected with a reference ground;
an inductor L4, one end of the inductor L4 being connected to the other end of the capacitor C4;
and one end of the capacitor C6 is connected with the other end of the inductor L4, and the other end of the capacitor C6 is connected with the output end of the signal amplifier U2.
Further, according to an embodiment of the present invention, the power line carrier communication aviation obstruction light further includes:
and the direct current power supply module is respectively connected with the battery pack, the lamp and the synchronous power supply signal module so as to supply power to the lamp and the synchronous power supply signal module after voltage conversion is carried out on a power supply of the battery pack.
The aviation obstruction light for power line carrier communication provided by the embodiment of the invention is characterized in that a light source and a driving module are arranged on a lamp, and the driving module is used for driving the light source to be turned on or off; the battery pack is connected with the lamp to supply power to the lamp; the synchronous power supply signal module is respectively connected with the lamp, the battery pack and the power line and used for controlling the battery pack to be charged or discharged through the power line when the power line does not have alternating current output, and simultaneously, the synchronous flashing signal is transmitted through the power line so as to control each aviation obstruction light on the power line to synchronously coordinate and flash. Therefore, when the power line has no commercial power alternating current, the power can be supplied to the power line by the control battery pack, the synchronous signal is loaded on the direct-current power supply, the synchronous power supply can be supplied to the barrier lamps with other power sources lacking on the power line for charging, the synchronous signals of the barrier lamps can be received and sent, and synchronous coordination and flashing of the barrier lamps in a period of time can be guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a synchronous flashing light system composed of a plurality of aviation obstruction lights communicated by a power line carrier according to an embodiment of the invention;
fig. 2 is a block diagram of an obstruction light according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit structure of a part of a circuit of a synchronous charging and discharging module, a battery pack and a modem controller according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another part of the synchronous charge-discharge module and the modem controller according to the embodiment of the present invention.
Fig. 5 is a waveform diagram of a synchronization signal according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment 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.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 and 2, an embodiment of the present invention provides an aviation obstruction light for power line carrier communication, including: the lamp is provided with a lamp source and a driving module, and the driving module is used for driving the lamp source to be turned on or turned off; the battery pack is connected with the lamp to supply power to the lamp; as shown in fig. 2, the driving module is configured to convert a dc power signal output by the battery pack into a driving signal of a lamp source, where the lamp source may be an LED lamp source, and since the LED lamp source may emit light under the action of a set dc power, the driving module may convert a dc resistance output by the dc power supply module into a power supply of the lamp source, so as to control lighting and extinguishing of the lamp source. The lighting or extinguishing control of the lamp source by the lamp via the driving circuit is prior art, and for the sake of brevity, the description is not provided herein.
The synchronous power supply signal module is respectively connected with the lamp, the battery pack and the power line and used for controlling the battery pack to be charged or discharged through the power line when the power line does not output alternating current, and simultaneously, the synchronous flashing signal is transmitted through the power line so as to control each aviation obstruction light on the power line to be synchronously and coordinately flashed. As shown in fig. 2, the synchronous power signal module is connected to a power line. Therefore, alternating current or direct current on the power line can be controlled to charge the battery pack, and when the power line is powered normally, the synchronous power supply signal module can charge the battery pack through the alternating current on the power line. However, when the power line has no ac power supply due to reasons such as power failure, the synchronous power supply signal module can control the battery pack to discharge to provide dc power for the barrier lamps in a certain area, and other barrier lamps in the certain area can judge whether the battery pack of the power line needs to be charged through the synchronous power supply signal module of the power line, and when the voltage of the battery pack of the power line is lower than the voltage of the power line, the battery pack of the power line can be charged by the dc power on the power line. When the voltage of the self battery pack is higher than the voltage of the power line, the self battery pack does not need to be charged. So as to ensure the balance of the electric quantity of the battery pack of the obstruction light in a certain area. Meanwhile, the synchronous power supply signal module can also load the modulated synchronous signal to the direct-current power supply signal through a direct-current power supply as a carrier of the communication signal, transmit the modulated synchronous signal to other barrier lamps through a power line, the synchronous power supply signal modules of the other barrier lamps can receive the communication signal, extract the synchronous signal after signal demodulation is carried out through a modem, transmit the synchronous signal to the lamp, and the lamp periodically lights or extinguishes the lamp by taking the synchronous signal as a starting point of a flashing period. Thus, the barrier lamps on the power lines in a certain area start to flash for the same period and a uniform starting point. Synchronous and coordinated flashing of all barrier lamps on the power line can be realized. And because the power line is provided with the direct-current power supply, the situation that the barrier lamp cannot synchronously coordinate and flash due to the fact that the battery of the barrier lamp does not have a power supply can be avoided. Therefore, the barrier lamps in a certain area on the power line are ensured to synchronously and coordinately flash according to a set period. As shown in fig. 1, in order to reduce the consumption of the dc power of the battery pack by the power line, electronic switches may be provided at both ends of a certain area of the obstruction light, and when synchronous charging and synchronous signal transmission by the dc power source are required, the power line may be switched on and off by the electronic switches, and the dc power is turned off and the ac power is turned on.
Referring to fig. 2 and 3, the synchronous power signal module includes: the synchronous charging and discharging control system comprises a synchronous charging and discharging module, a synchronous signal transceiving module and a modulation and demodulation controller, wherein the synchronous charging and discharging module is respectively connected with a power line and a battery pack so as to control the synchronous charging and discharging of the battery pack when the circuit line has no alternating current.
Specifically, as shown in fig. 3, in one embodiment of the present invention, the synchronous charging and discharging module includes: the voltage sampling circuit is respectively connected with the power line and a voltage detection end of the modulation and demodulation controller, the voltage sampling circuit is used for sampling the voltage on the power line and judging three states of direct current, alternating current or no power supply on the power line through the modulation and demodulation controller. Therefore, the voltage state on the power line can be obtained through the voltage sampling circuit, and further whether the power line is powered by alternating current or direct current or is not powered by a power supply can be obtained. Because alternating current is generally 220V high voltage, and when direct current is supplied through the battery pack, the alternating current is generally 56V, 48V or 32V power supply, and because the voltages are different, the voltage sampling circuit is required to obtain the voltage value on the power line, so that the battery pack is switched to different charge and discharge loops according to different voltage values, and the switching control of the charge and discharge loops is performed on the battery pack.
As shown in fig. 3, in one embodiment of the present invention, the voltage sampling circuit includes: the power line protection circuit comprises a diode D3, a resistor R9, a resistor R10 and a transient diode D4, wherein the anode of the diode D3 is connected with the power line; one end of the resistor R9 is connected with the cathode of the diode D3; one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with a reference ground; the cathode of the transient diode D4 is connected to the one end of the resistor R10, the anode of the transient diode D4 is connected to the reference ground, and the cathode of the transient diode D4 is further connected to a voltage detection end of the modem controller. As shown in fig. 3, the alternating current can be rectified and filtered to be output through the one-way conductivity of the diode D3. The resistor R9 and the resistor R10 form a voltage division circuit, voltage output by the power line can be divided and then output to a voltage sampling end of the modulation and demodulation controller, and the modulation and demodulation controller can acquire the output voltage divided by the resistor R9 and the resistor R10. Therefore, the modulation and demodulation controller can acquire the voltage value on the power line, and can acquire whether the power line is in direct current supply or alternating current supply by acquiring the voltage values of a plurality of points. For example, in the case of dc power supply, the output voltage is a constant voltage value; when AC power is supplied, the pulse signal is 50 Hz. Interference pulse signals can be absorbed through the transient diode D4, and high-voltage pulse interference signals are prevented from entering the modulation and demodulation controller.
The synchronous charging voltage comparison circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, so that when the voltage on the power line is direct current, the direct current is compared with the voltage of the battery pack; in an embodiment of the present invention, in order to avoid interference caused by discharge of the battery pack on the dc power on the circuit line, when there is another obstacle lamp on the power line to provide a dc power signal, the synchronous charging voltage comparison circuit needs to compare the voltage of its own battery pack with the voltage of the dc power on the power line, and when the dc power on the power line is higher than the voltage of its own battery pack, power is supplied to its own battery pack. Meanwhile, the balance of the electric quantity of the battery pack of the barrier lamp in a certain area is ensured.
As shown in fig. 3, in one embodiment of the present invention, the synchronous charging voltage comparison circuit includes: the circuit comprises a relay K1, a triode Q1 and a comparator U1, wherein a first end of a channel of the relay K1 is connected with a power line; a collector of the triode Q1 is connected with a first controlled end of the relay K1, a second controlled end of the relay K1 is connected with a power supply, an emitter of the triode Q1 is connected with a reference ground, and a base of the triode Q1 is also connected with one control end of the modulation and demodulation controller U3 through a resistor R5; the positive phase input end of the comparator U1 is connected with the second end of the channel of the relay K1 through a diode D4, the negative phase input end of the comparator U1 is connected with the positive end of the battery pack, and the output end of the comparator U1 is connected with a voltage sampling end of the modulation and demodulation controller U3.
As shown in fig. 3, when the modem controller obtains that the power supply on the power line is a dc power supply through the voltage sampling circuit, the relay K1 may be controlled to be turned on by the RLY1 control signal line, the dc power on the power line is output to the non-inverting input terminal of the comparator U1 through the diode D4, and compared with the voltage of the battery pack, when the dc power voltage on the power line is higher than the voltage of the battery pack, the comparator U1 outputs a high level signal to the modem controller. The modulation and demodulation controller can conduct the charging loop so as to charge the battery pack of the modulation and demodulation controller. Because the specifications of the barrier lamps on the power line are not necessarily the same, some barrier lamps may discharge the battery pack with small capacity in the process of lighting the lamp source, and in order to ensure that each barrier lamp can synchronously and coordinately flash, the battery pack of the barrier lamp with insufficient power supply needs to be synchronously charged in the flash period.
The synchronous charge and discharge control circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, and is used for charging the battery pack under the control of the modulation and demodulation controller when the voltage of the battery pack is lower than the direct current voltage of the power line; or when the power line has no alternating current and direct current, the battery pack is controlled to discharge.
Referring to fig. 3, in an embodiment of the present invention, the synchronous charging and discharging control circuit includes: the battery pack comprises an MOS (metal oxide semiconductor) switching tube Q3, an MOS switching tube Q4, a relay K2 and a triode Q2, wherein the drain electrode of the MOS switching tube Q3 is connected with the negative end of the battery pack through a current sampling resistor RS1, and the grid electrode of the MOS switching tube Q3 is connected with the discharge control end of the modulation and demodulation controller U3 through a resistor R11; the drain electrode of the MOS switch tube Q4 is connected with the source electrode of the MOS switch tube Q3, the grid electrode of the MOS switch tube Q4 is connected with the charging control end of the modulation and demodulation controller U3 through a resistor R12, and the source electrode of the MOS switch tube Q4 is connected with the negative end of the power line; the common channel end of the relay K2 is connected with a power line, and the first channel end of the relay K2 is connected with the positive end of the battery pack; the second channel end of the relay K2 is connected with the positive end of the battery pack through the AC-DC voltage conversion circuit; the collector of the triode Q12 is connected with the first controlled end of the relay K2, the second controlled end of the relay K2 is connected with a power supply, the emitter of the triode Q2 is connected with a reference ground, and the base of the triode Q2 is connected with one control end of the modulation and demodulation controller U3 through a resistor R7.
Specifically, as shown in fig. 3, the MOS switch Q3 is a discharge switch, and the discharge of the battery pack is controlled under the control of the modem controller. And the MOS switch tube Q4 is a charging switch tube, and the charging of the battery pack is controlled under the control of the modulation and demodulation controller. The relay K2 is a double-channel switch and can be driven by the triode Q2 to switch channels. For example, when the modulation and demodulation controller detects that a power supply on a power line is alternating current, the modulation and demodulation controller can output a high-level signal, switch the common channel end of the relay K2 to an AC-DC circuit end, and supply power to the battery pack after performing direct current conversion on input alternating current through the AC-DC circuit. Similarly, when the circuit line has no alternating current, the modulation and demodulation controller can output a low level signal to switch the common channel end of the relay K2 to the battery pack end, and the common channel end is directly connected with the battery pack without the need of performing voltage conversion by an AC-DC circuit. At this time, the modem controller may perform charging or discharging control by controlling on or off of the MOS switch transistor Q3 and the MOS switch transistor Q4.
Referring to fig. 4, the synchronization signal transceiver module is connected to a power line to perform transceiving of a modulated synchronization signal through the power line; specifically, as shown in fig. 4, the modem controller is respectively connected to the synchronization signal transceiver module, the synchronization charge-discharge module, and the lamp, so as to control the battery pack to be charged and discharged through the power line through the synchronization charge-discharge module, control the synchronization signal transceiver module to receive and transmit the modulated synchronization signal, simultaneously modulate and demodulate the synchronization signal, and output the demodulated synchronization signal to the lamp or send the modulated signal to the power line, so as to control the aviation obstruction light to synchronously coordinate and flash. As shown in fig. 4, in one embodiment of the present invention, the synchronization signal transceiving module includes a synchronization signal receiving module and a synchronization signal transmitting module, and the synchronization signal receiving module includes: a signal attenuation control circuit and a first filter circuit, the signal attenuation control circuit comprising: the device comprises a diode D5, a transient diode D8, a resistor R13, a resistor R14 and an electronic switch K3, wherein the anode of the diode D5 is connected with a power line; the cathode of the transient diode D8 is connected with the cathode of the diode D5, and the anode of the transient diode D8 is connected with the reference ground; one end of the resistor R13 is connected with the cathode of the diode D5, and the other end of the resistor R13 is connected with the first filter circuit; one end of the resistor R14 is connected with the other end of the resistor R13, and the other end of the resistor R14 is connected with a reference ground; the control end of the electronic switch K3 is connected with one control end of the modulation and demodulation controller U3, one end of a channel of the electronic switch K3 is connected with one end of the resistor R14, and the other end of the electronic switch K3 is connected with the other end of the resistor R14 through a resistor R15.
Specifically, the transient diode D8 can filter the high-voltage pulse interference signal, so as to avoid the influence of the high-voltage pulse signal on the back-end circuit. The resistor R13 and the resistor R14 can form a voltage division circuit, and the voltage output by the circuit line is divided and then output. The electronic switch K3 is connected with the resistor R14 in parallel after being connected with the resistor R15 in series. Therefore, when the power line supplies power for the alternating current, the modem can output a voltage amplitude control signal to switch on the electronic switch K3, so that the resistor R15 is merged at two ends of the resistor R14, the amplitude of the output signal of the signal attenuation control circuit is lower, and the voltage requirement of the modulation and demodulation controller can be met. In an embodiment of the present invention, the electronic switch K3 may adopt a relay or a MOS transistor, and is not particularly limited herein.
With continued reference to fig. 4, in one embodiment of the invention, the first filtering circuit includes: the inductor comprises a capacitor C2, a capacitor C3, an inductor L1, a resistor R16, an inductor L2, a capacitor C7 and a resistor R21, wherein one end of the capacitor C2 is connected with the other end of the resistor R13; one end of the capacitor C3 is connected with the other end of the capacitor C2, and the other end of the capacitor C3 is connected with a reference ground; one end of the inductor L1 is connected with the other end of the capacitor C2, and the other end of the inductor L1 is connected with a reference ground; one end of the resistor R16 is connected with the other end of the capacitor C2, and the other end of the resistor R16 is connected with a reference ground; one end of the inductor L2 is connected with the other end of the capacitor C2; one end of the capacitor C7 is connected with the other end of the inductor L2; one end of the resistor R21 is connected with the other end of the capacitor C7, and the other end of the resistor R21 is connected with the demodulation signal input end of the modulation and demodulation controller U3.
Specifically, as shown in fig. 4, the capacitor C2, the capacitor C3, the inductor L1, the resistor R16, the inductor L2, the capacitor C7, and the resistor R21 form a filter circuit, which filters out interference signals, dc power signals, ac power signals, and the like output by the power line, so as to output effective modulation signals to the modem controller for signal demodulation, and demodulate and output synchronization signals. More specifically, through electric capacity C2 can be with direct current signal filtering, through electric capacity C3 can be with high frequency interference signal filtering, through inductance L1, resistance R16 can be with low frequency interference signal filtering to output modulated signal to inductance L2, through inductance L2, electric capacity C7 and resistance R21 are established ties, can further with high frequency interference signal and low frequency signal filtering, with effective signal output to the modem controller.
Referring to fig. 4, in an embodiment of the present invention, the synchronization signal sending module includes an amplifying circuit and a second filter circuit, the amplifying circuit includes a signal amplifier U2, a non-inverting input terminal of the signal amplifier U2 is connected to the modulated signal output terminal of the modem controller U3 through a resistor R20, an inverting input terminal of the signal amplifier U2 is connected to the reference ground through a resistor R19, an inverting input terminal of the signal amplifier U2 is further connected to the output terminal of the signal amplifier U2 through a resistor R17, an inverting input terminal of the signal amplifier U2 is further connected to one end of a resistor R18, the other end of the resistor R18 is connected to one end of a channel of an electronic switch K4, the other end of the channel of the electronic switch K4 is connected to the output terminal of the signal amplifier U2, and a controlled terminal of the electronic switch K4 is further connected to one control terminal of the modem controller U3; the second filter circuit includes: the inductor comprises a capacitor C4, an inductor L3, a capacitor C5, an inductor L4 and a capacitor C6, wherein one end of the capacitor C4 is connected with a power line; one end of the inductor L3 is connected with the other end of the capacitor C4, and the other end of the inductor L3 is connected with a reference ground; one end of the capacitor C5 is connected with the other end of the capacitor C4, and the other end of the capacitor C5 is connected with a reference ground; one end of the inductor L4 is connected to the other end of the capacitor C4; one end of the capacitor C6 is connected with the other end of the inductor L4, and the other end of the capacitor C6 is connected with the output end of the signal amplifier U2.
Specifically, when the modem controller needs to send a signal through power, the modulated signal is output through a DA _ OUT signal end, amplified by a signal amplifier U2 and output to a second filter circuit, and after a part of interference signals are filtered by the second filter circuit, effective signals are loaded onto an alternating current or direct current power supply voltage of a power line to transmit the signal. The signal amplifier U2, the resistor R17, the resistor R19 and the resistor R20 form a signal amplifying circuit, and due to the fact that the alternating current and the direct current on a circuit line are different in voltage, in order to reduce the attenuation degree of a modulation signal, the resistor R18 can be disconnected through the electronic switch K4 when a power line is alternating current, and therefore the feedback resistance value is increased. Thereby causing a corresponding increase in output amplification and an increase in the amplitude of the modulated signal. In an embodiment of the present invention, the electronic switch K4 may adopt a relay or a MOS transistor, and is not particularly limited herein. The capacitor C4, the inductor L3, the capacitor C5, the inductor L4 and the capacitor C6 form a filter circuit, so that interference signals, direct-current power signals and the like output by the amplifier can be filtered, and effective modulation signals are output to a power line. The filtering process is similar to that of the synchronous signal receiving part, and repeated description is omitted again.
Referring to fig. 2, the power line carrier communication aviation obstruction light further includes: and the direct current power supply module is respectively connected with the battery pack, the lamp and the synchronous power supply signal module so as to supply power to the lamp and the synchronous power supply signal module after voltage conversion is carried out on a power supply of the battery pack. As shown in fig. 2, since the output voltage of the backup battery pack may not meet the power supply requirement of the lamp, the output power of the battery pack may be converted into the power supply of the lamp by the dc power supply module, so as to supply power to the lamp.
The following describes the operation process of the obstruction light with the modem controller as the core:
referring to fig. 2 to 5, the modem controller includes: the power line voltage detection module is used for receiving a power line voltage sampling signal output by the voltage sampling circuit, judging whether direct current, alternating current or no power supply exists, controlling the relay K1 to be conducted during direct current so as to output direct current, and performing inverse comparison with battery pack voltage through the synchronous charging voltage comparison circuit; the battery synchronous charging module is used for receiving the comparison voltage of the synchronous charging voltage comparison circuit, controlling the charging switch to be conducted when the voltage value of the battery pack is lower than the direct current of the power line, and charging the battery pack; or when the power line has no power supply, the discharge switch is controlled to be switched on so as to discharge through the power line; the receiving signal amplitude control module is used for conducting or stopping control on the electronic switch K3 so as to regulate and control the amplitude of a receiving signal; the demodulation module is used for demodulating the received signal; the lamp synchronous signal generating module is connected with the demodulating module and used for generating a synchronous signal according to the demodulating signal; the system synchronization signal generation module is used for generating a sending synchronization signal; the modulation module is connected with the system synchronous signal generation module and is used for modulating and outputting the sending synchronous signal; the sending signal amplification control module is used for conducting on or off control on the electronic switch K4 so as to regulate and control the sending signal.
Its working process specifically is, at the beginning, samples through the voltage of modem controller voltage sampling circuit on to the power line to it is the alternating current power supply to obtain the power line through power line voltage detection module, still does not have power supply, perhaps the direct current power supply, when the power line does not supply power, switches on battery package and circuit line switch-on end through control relay K2, and the accessible battery package charges or discharges. Meanwhile, after the synchronous signals can be modulated by the system synchronous signal generation module and the modulation module, the synchronous signals are sent to the power line through the synchronous signal sending module, direct current on the power line is used for transmitting the signals, other barrier lamps receive the synchronous signals on the power line through the synchronous signal receiving module, the synchronous signals are demodulated out through the demodulation module and transmitted to the lamp synchronous signal generation module, the synchronous signals are input to the lamp through the lamp synchronous signal generation module, and after the lamp reads the synchronous signals, the lamp starts to control the lamp source to flash at the starting time point of the synchronous signals. The synchronization signal may be as shown in fig. 5, a plurality of consecutive pulse signals are generated in one flashing period, and the falling edge of the fifth pulse is the start of the generation of the synchronization signal. The periodic synchronization signal is continuously sent, and the synchronization signal can be acquired again in the next period after the synchronization signal is leaked out from other barrier lamps. Thus, synchronous and coordinated flashing of lamps of a plurality of obstacles can be realized. When the power line is out of power, one barrier lamp can send direct current to the power line, and other barrier lamps can detect the direct current and send and receive synchronous signals through the direct current on the power line. In addition, because the voltage of the alternating current is low, the modulation and demodulation controller also needs to perform corresponding processing according to the characteristics of the direct current, and the specific process includes the adjustment of the amplitude of the transmitted and received signals and the like. In order to reduce the loss of direct current, both ends of the power supply source may be cut off by the barrier lamps located at both ends of the power line, and only the power supply range may be set within the area of the plurality of barrier lamps.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent arrangements may be substituted for some of the features of the embodiments described above. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. An aviation obstruction light for power line carrier communication, comprising:
the lamp is provided with a lamp source and a driving module, and the driving module is used for driving the lamp source to be turned on or turned off;
the battery pack is connected with the lamp to supply power to the lamp;
the synchronous power supply signal module is respectively connected with the lamp, the battery pack and the power line and used for controlling the battery pack to be charged or discharged through the power line when the power line does not have alternating current output, and meanwhile, the synchronous flashing signal is transmitted through the power line so as to control each aviation obstruction light on the power line to synchronously coordinate and flash.
2. The power-line carrier communication aircraft obstruction light of claim 1, wherein the synchronous power signal module comprises:
the synchronous charging and discharging module is respectively connected with the power line and the battery pack so as to control the synchronous charging and discharging of the battery pack when the circuit line has no alternating current;
the synchronous signal transceiving module is connected with the power line and used for transceiving the modulated synchronous signal through the power line;
the modulation and demodulation controller is respectively connected with the synchronous signal receiving and sending module, the synchronous charging and discharging module and the lamp, so that the synchronous charging and discharging module controls the battery pack to be charged and discharged through a power line, the synchronous signal receiving and sending module controls the modulated synchronous signal to be received and sent, meanwhile, the synchronous signal is modulated and demodulated, the demodulated synchronous signal is output to the lamp or the modulated signal is sent to the power line, and the aviation obstruction light is controlled to be synchronously coordinated and flashing.
3. The aviation obstruction light for power line carrier communication of claim 2, wherein the synchronous charging and discharging module comprises:
the voltage sampling circuit is respectively connected with the power line and a voltage detection end of the modulation and demodulation controller, and is used for sampling the voltage on the power line and judging three states of direct current, alternating current or no power supply on the power line through the modulation and demodulation controller;
the synchronous charging voltage comparison circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, and compares the direct current with the voltage of the battery pack when the voltage on the power line is the direct current;
the synchronous charging and discharging control circuit is respectively connected with the power line, the battery pack and the modulation and demodulation controller, and is used for charging the battery pack under the control of the modulation and demodulation controller when the voltage of the battery pack is lower than the direct current voltage of the power line; or when the power line has no alternating current and direct current, the battery pack is controlled to discharge.
4. The power-line carrier communication aviation obstruction light of claim 3, wherein the synchronous charging voltage comparison circuit comprises:
the relay K1, wherein the first end of the channel of the relay K1 is connected with a power line;
a collector of the triode Q1 is connected with a first controlled end of the relay K1, a second controlled end of the relay K1 is connected with a power supply, an emitter of the triode Q1 is connected with a reference ground, and a base of the triode Q1 is also connected with a control end of the modulation and demodulation controller U3 through a resistor R5;
the positive phase input end of the comparator U1 is connected with the second end of the channel of the relay K1 through a diode D4, the negative phase input end of the comparator U1 is connected with the positive end of the battery pack, and the output end of the comparator U1 is connected with a voltage sampling end of the modulation and demodulation controller U3.
5. The power-line carrier communication aviation obstruction light of claim 4, wherein the synchronous charging and discharging control circuit comprises:
the drain electrode of the MOS switch tube Q3 is connected with the negative end of the battery pack through a current sampling resistor RS1, and the grid electrode of the MOS switch tube Q3 is connected with the discharge control end of the modulation-demodulation controller U3 through a resistor R11;
the drain electrode of the MOS switch tube Q4 is connected with the source electrode of the MOS switch tube Q3, the grid electrode of the MOS switch tube Q4 is connected with the charging control end of the modulation and demodulation controller U3 through a resistor R12, and the source electrode of the MOS switch tube Q4 is connected with the negative end of the power line;
the common channel end of the relay K2 is connected with a power line, and the first channel end of the relay K2 is connected with the positive end of the battery pack;
the second channel end of the relay K2 is connected with the positive end of the battery pack through the AC-DC voltage conversion circuit;
triode Q2, triode Q12's collecting electrode with relay K2's first controlled end is connected, relay K2's second controlled end is connected with power supply, triode Q2's projecting pole is connected with reference ground, triode Q2's base still through resistance R7 with a control end of modem controller U3 is connected.
6. The power-line carrier communication aviation obstruction light of claim 5, wherein the voltage sampling circuit comprises:
a diode D3, an anode of the diode D3 being connected to the power line;
a resistor R9, wherein one end of the resistor R9 is connected with the cathode of the diode D3;
one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with a reference ground;
a transient diode D4, a cathode of the transient diode D4 is connected to the one end of the resistor R10, an anode of the transient diode D4 is connected to a reference ground, and a cathode of the transient diode D4 is further connected to a voltage detection end of the modem controller.
7. The aviation obstruction light for power line carrier communication of claim 6, wherein the synchronization signal transceiving module comprises a synchronization signal receiving module and a synchronization signal transmitting module, and the synchronization signal receiving module comprises: a signal attenuation control circuit and a first filter circuit, the signal attenuation control circuit comprising:
a diode D5, wherein the anode of the diode D5 is connected with a power line;
a transient diode D8, a cathode of the transient diode D8 is connected with a cathode of the diode D5, and an anode of the transient diode D8 is connected with a reference ground;
one end of the resistor R13 is connected with the cathode of the diode D5, and the other end of the resistor R13 is connected with the first filter circuit;
a resistor R14, one end of the resistor R14 being connected to the other end of the resistor R13, the other end of the resistor R14 being connected to a reference ground;
the control end of the electronic switch K3 is connected with one control end of the modulation and demodulation controller U3, one end of a channel of the electronic switch K3 is connected with one end of the resistor R14, and the other end of the electronic switch K3 is connected with the other end of the resistor R14 through a resistor R15.
8. The power-line carrier communication aviation obstruction light of claim 7, wherein the first filter circuit comprises:
one end of the capacitor C2 is connected with the other end of the resistor R13;
one end of the capacitor C3 is connected with the other end of the capacitor C2, and the other end of the capacitor C3 is connected with a reference ground;
an inductor L1, one end of the inductor L1 being connected to the other end of the capacitor C2, the other end of the inductor L1 being connected to a reference ground;
a resistor R16, one end of the resistor R16 being connected to the other end of the capacitor C2, the other end of the resistor R16 being connected to a reference ground;
one end of the inductor L2 is connected with the other end of the capacitor C2;
one end of the capacitor C7 is connected with the other end of the inductor L2;
one end of the resistor R21 is connected with the other end of the capacitor C7, and the other end of the resistor R21 is connected with the demodulation signal input end of the modulation and demodulation controller U3.
9. The aviation obstruction light of the power line carrier communication of claim 6, wherein the synchronous signal transmitting module comprises an amplifying circuit and a second filter circuit, the amplifying circuit comprises a signal amplifier U2, a non-inverting input terminal of the signal amplifier U2 is connected to the modulation signal output terminal of the modem controller U3 through a resistor R20, an inverting input terminal of the signal amplifier U2 is connected to a reference ground through a resistor R19, an inverting input terminal of the signal amplifier U2 is further connected to the output terminal of the signal amplifier U2 through a resistor R17, an inverting input terminal of the signal amplifier U2 is further connected to one end of a resistor R18, the other end of the resistor R18 is connected to one end of a channel of an electronic switch K4, the other end of the channel of the electronic switch K4 is connected to the output terminal of the signal amplifier U2, and a controlled terminal of the electronic switch K4 is further connected to a control terminal of the modem controller U3;
the second filter circuit includes:
one end of the capacitor C4 is connected with a power line;
an inductor L3, wherein one end of the inductor L3 is connected with the other end of the capacitor C4, and the other end of the inductor L3 is connected with a reference ground;
one end of the capacitor C5 is connected with the other end of the capacitor C4, and the other end of the capacitor C5 is connected with a reference ground;
an inductor L4, one end of the inductor L4 being connected to the other end of the capacitor C4;
and one end of the capacitor C6 is connected with the other end of the inductor L4, and the other end of the capacitor C6 is connected with the output end of the signal amplifier U2.
10. The power-line carrier communication aviation obstruction light of claim 1, further comprising:
and the direct current power supply module is respectively connected with the battery pack, the lamp and the synchronous power supply signal module so as to supply power to the lamp and the synchronous power supply signal module after voltage conversion is carried out on a power supply of the battery pack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211102244.1A CN115696679B (en) | 2022-09-09 | 2022-09-09 | Aviation obstruction light for power line carrier communication |
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| CN202211102244.1A CN115696679B (en) | 2022-09-09 | 2022-09-09 | Aviation obstruction light for power line carrier communication |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002260403A (en) * | 2001-02-28 | 2002-09-13 | Toshiba Lighting & Technology Corp | Obstacle light control system and lighting control system |
| JP2002299081A (en) * | 2001-03-29 | 2002-10-11 | Toshiba Lighting & Technology Corp | Lamp lighting device, lighting system and obstacle light |
| JP2004055460A (en) * | 2002-07-23 | 2004-02-19 | Toshiba Lighting & Technology Corp | Airplane warning light system |
| CN102710028A (en) * | 2012-06-18 | 2012-10-03 | 浙江方大智控科技有限公司 | Cable theft-proof monitoring system based on passive carrier communication |
| CN103024997A (en) * | 2012-11-20 | 2013-04-03 | 深圳华智测控技术有限公司 | LED (Light Emitting Diode) lamp drive power based on power line carrier |
| CN109561549A (en) * | 2018-12-28 | 2019-04-02 | 四川和盟航空科技有限公司 | A kind of aviation obstruction beacon of power line carrier, PLC |
| CN209462679U (en) * | 2018-12-28 | 2019-10-01 | 四川和盟航空科技有限公司 | A kind of main sub-control flying obstacle lamp control device based on LoRa wireless communications mode |
| CN209672129U (en) * | 2019-03-13 | 2019-11-22 | 广州市新航科技有限公司 | A kind of aviation obstruction beacon using electric force carrier transmission synchronization signal |
-
2022
- 2022-09-09 CN CN202211102244.1A patent/CN115696679B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002260403A (en) * | 2001-02-28 | 2002-09-13 | Toshiba Lighting & Technology Corp | Obstacle light control system and lighting control system |
| JP2002299081A (en) * | 2001-03-29 | 2002-10-11 | Toshiba Lighting & Technology Corp | Lamp lighting device, lighting system and obstacle light |
| JP2004055460A (en) * | 2002-07-23 | 2004-02-19 | Toshiba Lighting & Technology Corp | Airplane warning light system |
| CN102710028A (en) * | 2012-06-18 | 2012-10-03 | 浙江方大智控科技有限公司 | Cable theft-proof monitoring system based on passive carrier communication |
| CN103024997A (en) * | 2012-11-20 | 2013-04-03 | 深圳华智测控技术有限公司 | LED (Light Emitting Diode) lamp drive power based on power line carrier |
| CN109561549A (en) * | 2018-12-28 | 2019-04-02 | 四川和盟航空科技有限公司 | A kind of aviation obstruction beacon of power line carrier, PLC |
| CN209462679U (en) * | 2018-12-28 | 2019-10-01 | 四川和盟航空科技有限公司 | A kind of main sub-control flying obstacle lamp control device based on LoRa wireless communications mode |
| CN209672129U (en) * | 2019-03-13 | 2019-11-22 | 广州市新航科技有限公司 | A kind of aviation obstruction beacon using electric force carrier transmission synchronization signal |
Non-Patent Citations (1)
| Title |
|---|
| 邓术;何志毅;欧少敏;尹椿淑;何宁;: "单根电力线接入的LED调光器与调光驱动电源", 电测与仪表 * |
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