Wirelessly-driven lamp and wireless electric energy and PWM (Pulse Width Modulation) transmission method thereof

Abstract

The invention provides a PWM (Pulse Width Modulation) signal and electric energy transmission method, which comprises the following steps of: outputting three PWM signals in a staggered manner according to a set interval time t, so that wireless transmission signals integrated with carrier signals are sequentially output in a staggered manner by a transmitting resonance coil at the same phase difference; therefore, the power supply current formed by the wireless transmission signal received by the receiving resonance coil can reach a peak value and a valley value in sequence in a complete period, so that relatively stable current output is formed, the situation that the power supply module needs to be continuously switched between a full-load state and a no-load state is avoided, the power supply current is more average, and the power supply efficiency is improved. Performance requirements of the power supply module are reduced and service life of the power supply module is prolonged. Meanwhile, according to the wirelessly-driven lamp provided by the invention, a clamping column arranged at the bottom of a base of the lamp body is embedded and fixed in a clamping hole of a lamp holder, so that the lamp body and the lamp holder are fixedly connected; and the situation of unstable power transmission caused by dislocation of the transmitting resonance coil and the corresponding receiving resonance coil due to displacement of the lamp body in the use process is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless power transmission of lamps, and in particular to a wirelessly driven lamp and a wireless power and PWM transmission method thereof. Background Art

[0002] The most basic function of a lamp is to provide enough light to meet people's lighting needs in various environments, and the lighting effect of the lamp is usually determined by the various PWM control signals input by the controller to control the LED lights of different colors.

[0003] Traditional PWM control signals generate high levels at the same time and control the duration of high and low levels to control each color LED. In a three-coil power transmission system, the three PWM signals controlling the red LED module, green LED module and blue LED module are modulated with corresponding carrier signals to generate wireless power transmission signals and output them, thereby realizing wireless transmission of wireless power transmission signals and electric energy of the red LED module, green LED module and blue LED module through the cooperation of corresponding three pairs of transmitting resonators and receiving resonators.

[0004] However, reference Figure 1 As shown in FIG. 1 , when the duty cycle of the carrier signal is the same, if the three PWM signals are generated and turned off at the same time, the three wireless transmission signals A, B, and C generated by the modulation of the carrier signal and the corresponding PWM signal are as follows: Figure 1 As shown, the power supply current generated at this time is Figure 1 As shown in the figure, the intermittent and uneven current supply will cause the power of the power supply module of the system to be high, and the performance requirements of the power supply module are relatively high. Taking the power of the red LED module, green LED module and blue LED module as 10W each, and the carrier signal duty cycle of 50% as an example, the power supply pulse power is 60W when the carrier signal is high, and the power supply power is 0W when the carrier signal is low, so that the power supply module needs to switch between full load / no load state continuously, and the performance requirements of the power supply module are high.

[0005] Therefore, it is necessary to improve the three-coil power transmission system and develop a wireless power supply and PWM transmission method with uniform power supply current output, low performance requirements for the power supply module, and long service life to provide users with stable lighting. Summary of the invention

[0006] In view of the technical problem that the power supply module of the three-coil power transmission system in the prior art needs to be continuously switched between full-load and no-load states, which places high demands on the performance of the power supply module, the present invention provides a wirelessly driven lamp.

[0007] A PWM signal and electric energy transmission method, comprising: S01: outputting three PWM signals for controlling an R-LED module, a G-LED module and a B-LED module in sequence at a set interval time t; wherein the three PWM signal periods are all T, and t=1 / 3*T; the duty ratios of the three PWM signals are all the same; S02: integrating the effective levels in the three PWM signals with the carrier signals corresponding to the three PWM signals one by one to form three wireless power transmission signals; wherein the duty ratios of the carrier signals corresponding to the three PWM signals are the same; S03: amplifying the three wireless power transmission signals and transmitting them to the R-LED module, the G-LED module, the B-LED module, and the G-LED module. The three transmitting resonant coils corresponding to the LED module are sent to the three receiving resonant coils corresponding to the three transmitting resonant coils; S04: the three receiving resonant coils receive the corresponding wireless power transmission signals in turn, and respectively form electric energy and output it to the corresponding R-LED module, G-LED module, and B-LED module for power supply; S05: the wireless power transmission signals of the three receiving resonant coils are extracted respectively, and the three wireless power transmission signals are rectified and formed into corresponding three PWM signals and then output to the corresponding R-LED module, G-LED module, and B-LED module, and the R-LED module, G-LED module, and B-LED module are driven in turn to perform variable light-emitting operations.

[0008] The present invention also provides a wirelessly driven lamp, comprising a lamp holder and a lamp body, wherein the lamp holder comprises a disc holder, a base body integrally formed with the disc holder, and a cable, wherein three transmitting resonant coils are arranged in the disc holder, and the outer peripheral side of the disc holder extends outward to form a plurality of clamping hole holders, each of which has a clamping hole; the base body is connected to the disc holder, and a control circuit board is arranged in the base body; the cable is arranged at one end of the base body away from the disc holder, and is electrically connected to the control circuit board; and the transmitting resonant coils are electrically connected to the control circuit board respectively; the The cable is used for power supply and inputting control signals for controlling the lighting effect of the lamp body; the control circuit board includes a PWM signal generating module, a signal modulation module and a carrier signal generating module; the PWM signal generating module is used to receive the control signal, and according to the control signal, staggeredly output three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module in sequence at a set interval time t; wherein the periods of the three PWM signals are all T, and t=1 / 3*T; the duty ratios of the three PWM signals are the same, and the signal modulation module is used to convert the three The effective levels in the PWM signal are respectively integrated with the carrier signals generated by the carrier signal generating module in a one-to-one correspondence, and three wireless power transmission signals are formed, which are then amplified and transmitted in sequence through the corresponding transmitting resonant coils. A card column matching the card hole is provided at the bottom of the lamp body, and the lamp body is fixedly connected to the lamp holder by embedding the card column in the card hole. The lamp body is provided with three receiving resonant coils, three detection modules electrically connected to the three receiving resonant coils, and R-LED modules, G-LED modules, and B-LED modules electrically connected to the three detection modules respectively. The receiving resonant coil corresponds to the transmitting resonant coil in a one-to-one correspondence, and the receiving resonant coil is used to receive the wireless power transmission signal transmitted by the corresponding transmitting resonant coil, and form electric energy to be output to the corresponding R-LED module, G-LED module, and B-LED module in sequence for power supply. The detection module is used to extract the wireless power transmission signal of the corresponding receiving resonant coil, and rectify and reshape the three wireless power transmission signals into corresponding three PWM signals, and output and drive the corresponding R-LED module or G-LED module or B-LED module to perform light-emitting operation.

[0009] Preferably, the disc seat is recessed inward to form a first accommodating groove, the transmitting resonant coil is arranged in the first accommodating groove, and a cover plate for closing the first accommodating groove is provided on the first accommodating groove; an accommodating cavity is provided in the base body, and the control circuit board is located in the accommodating cavity; a wire hole is provided in the first accommodating groove, and the wire hole is connected to the accommodating cavity.

[0010] Preferably, three first mounting plates for mounting the transmitting resonant coil are provided on the disc base, and an annular protrusion corresponding to the first mounting plate is provided on the side of the cover plate close to the transmitting resonant coil, and the annular protrusion is sleeved on the outside of the transmitting resonant coil and abuts against the first mounting plate.

[0011] Preferably, three annular grooves are provided on the base, and the receiving resonant coil is installed in the annular grooves, and each of the annular grooves is provided with a second mounting plate for closing the annular grooves.

[0012] Preferably, one end of the base body away from the disc seat is recessed inward to form a through groove connected to the accommodating cavity, the cable is sleeved on a wire tube, and one end of the wire tube is connected to the through groove, the inner wall of the through groove is provided with a first internal thread, and the outer peripheral side of the wire tube is provided with a first external thread matching the first internal thread, the through groove is sleeved on one end of the wire tube, and is threadably connected to the first external thread through the first internal thread.

[0013] Preferably, a mounting seat is sleeved on the outer side of the base, and the base is installed on a reserved hole in a bathtub through the mounting seat; a second external thread is provided on the outer circumference of the base, a second internal thread matching the second external thread is provided on the inner circumference of the mounting seat, and a third external thread is provided on the outer circumference of the mounting seat; the mounting seat is sleeved on the outer side of the base and is threadedly connected to the second internal thread through the second external thread.

[0014] Preferably, the outer circumference of the pan seat further extends outward to form a plurality of fixing seats, each of which is provided with a thread groove, and the pan seat is fixed to another reserved hole of the bathtub through the thread groove.

[0015] Preferably, the lamp body includes a base, a lamp board and a lampshade, the clamping column is arranged at the bottom of the base, and the base is fixedly connected to the lamp holder by embedding the clamping column in the clamping hole; the receiving resonant coil is arranged on the base, and the lamp board is fixed on the base and located above the receiving resonant coil; the detection module and the R-LED module, the G-LED module and the B-LED module are provided on the lamp board; the lampshade is sleeved on the lamp board.

[0016] Preferably, a plurality of support columns are provided on the base outside the receiving resonant coil, a plurality of through holes corresponding to the support columns are provided on the lamp panel, and the lamp panel is sleeved on the corresponding support columns through the through holes.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a PWM signal and electric energy transmission method, by staggering the output of three PWM signals according to a set interval time t, and t=1 / 3*T, so that the three wireless power transmission signals integrated with the carrier signal are output in sequence by the transmitting resonant coil with the same phase difference, so that the power supply current formed by the wireless power transmission signals received by the three receiving resonant coils will reach peak values ​​and valley values ​​in sequence within a complete cycle, thereby forming a relatively stable current output, thereby avoiding the need for the power supply module to continuously switch between full load and no-load states, making the power supply current more balanced, thereby reducing the performance requirements of the power supply module and increasing the service life of the power supply module.

[0018] At the same time, the present invention provides a wirelessly driven lamp, which is fixedly connected between the lamp body and the lamp holder by arranging a clamping column at the bottom of the base and embedding the clamping column in the clamping hole of the lamp holder, thereby effectively avoiding the shaking or displacement of the lamp body during use, which causes the misalignment between the transmitting resonant coil and the corresponding receiving resonant coil and causes unstable power transmission or interference, thereby ensuring the stability of the light emission of the wirelessly driven lamp panel, improving the power transmission efficiency and the comfort experience of the lamp use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the waveform of the wireless power transmission signal and the power supply current waveform of the three-coil power transmission system in the prior art;

[0020] Figure 2 A schematic diagram of a PWM signal and a wireless power transmission signal waveform and a power supply current waveform of a power transmission method provided by the present invention;

[0021] Figure 3 A schematic diagram of a flow chart of a PWM signal and electric energy transmission method provided by the present invention;

[0022] Figure 4 A schematic diagram of the structure of a wirelessly driven lamp provided by the present invention;

[0023] Figure 5 A schematic diagram of the separation structure of the lamp holder and the lamp body provided by the present invention;

[0024] Figure 6 A schematic diagram of the overall structure of the lamp holder provided by the present invention;

[0025] Figure 7 A schematic diagram of the cross-sectional structure of a lamp holder provided by the present invention;

[0026] Figure 8 A schematic diagram of the exploded structure of the lamp holder provided by the present invention;

[0027] Fig. 9 A schematic diagram of the overall structure of the disc base provided by the present invention;

[0028] Fig.10 A schematic diagram of the bottom surface structure of the disc seat provided by the present invention;

[0029] Fig.11 A schematic diagram of the cover plate structure provided by the present invention;

[0030] Fig.12 A schematic diagram of the overall structure of the lamp body provided by the present invention;

[0031] Fig.13 A schematic diagram of the exploded structure of the lamp body provided by the present invention;

[0032] Fig.14 for Fig.13 Schematic diagram of the structure of part A;

[0033] Fig.15 This is a schematic diagram of the lampshade structure provided by the present invention.

[0034] Figure ID

[0035] 1. Lamp holder; 101. Plate holder; 1011. First receiving groove; 1012. Clamp column; 102. Base; 1021. Receiving cavity; 1022. Through groove; 1023. First internal thread; 1024. Second external thread; 1025. Wire hole; 103. Cable; 104. Clamp seat; 1041. Clamp hole; 105. Fixing seat; 1051. Thread groove; 2. Lamp body; 201. Base; 2011. Annular recess Groove; 2012, support column; 202, lamp board; 2021, through hole; 203, lampshade; 2031, rib; 3, transmitting resonant coil; 4, cover plate; 5, first mounting plate; 6, annular protrusion; 7, control circuit board; 8, wire tube; 801, first external thread; 9, receiving resonant coil; 10, second mounting plate; 11, mounting seat; 111, second internal thread; 112, third external thread; 113, flange. DETAILED DESCRIPTION

[0036] To further describe the present invention in detail, the following is an explanation with reference to the accompanying drawings. It is particularly noted that the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] refer to Figure 3 As shown, the present invention also provides a PWM signal and power transmission method, comprising steps S01 to S05.

[0038] Step S01: output three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module in sequence at a set interval t; wherein the periods of the three PWM signals are all T, and t=1 / 3*T; and the duty cycles of the three PWM signals are all the same.

[0039] By using the built-in PWM generation module of the MCU controller, the PWM generation module is set to generate the PWM period and PWM duty cycle of the three PWM signals that control the R-LED module, the G-LED module and the B-LED module, and PWM pulses with the same period and duty cycle can be output simultaneously. In addition, by setting the output delay time of the PWM generation module, the three PWM pulses can be output in sequence. In this embodiment, the period of the three PWM signals is T, and t=1 / 3*T, that is, the output delay time of the three PWM signals is 0, 1 / 3T, and 2 / 3T, respectively, and the three PWM signals can be output in sequence. Assuming that a complete sine wave is 360 degrees, the corresponding degrees between the pulses of these three PWM signals and the sine wave are 0 degrees, 120 degrees, and 240 degrees, respectively.

[0040] Step S02: Integrate the effective levels of the three PWM signals with the carrier signals corresponding to the three PWM signals to form three wireless power transmission signals; wherein the duty cycles of the carrier signals corresponding to the three PWM signals are the same.

[0041] In this embodiment, a high-frequency signal is used as a carrier signal, and the frequency range of the carrier signal is 50KHZ to 500KHZ, and the carrier signal is a sine wave signal. The effective level of the PWM signal refers to the part of the PWM control signal used to control the operation of the lamp. Usually, the PWM control signal of the common cathode lamp is effective at a high level, that is, when the PWM signal is at a high level, the common cathode lamp will be activated; the PWM control signal of the common anode lamp is effective at a low level, that is, when the PWM signal is at a low level, the lamp will be activated. Therefore, when the PWM signal is in an effective level signal, it can be modulated with the corresponding carrier signal to form a wireless power transmission signal, thereby achieving the effective part of the PWM signal cycle, that is, when it is in an effective level signal, a wireless power transmission signal is generated, and then an alternating electric field can be generated by the cooperation of the transmitting resonant coil and the receiving resonant coil to achieve wireless transmission of electric energy; when the PWM signal is in an invalid level signal, it cannot be modulated with the corresponding carrier signal to form a wireless power transmission signal output; in the invalid part of the PWM cycle, that is, when it is at an invalid level, no wireless power transmission signal is generated, and the alternating electric field cannot be generated by the cooperation of the transmitting resonant coil and the receiving resonant coil.

[0042] Preferably, the generation of the carrier signal in step S02 and the process of modulating the PWM signal and the carrier signal into a wireless power transmission signal can be implemented through internal programming of the MCU controller, which is conducive to simplifying the lamp structure and circuit complexity and flexibly adjusting the frequency and duty cycle of the PWM signal.

[0043] Step S03: After the three wireless transmission signals are amplified, they are received in sequence by three transmitting resonant coils corresponding to the R-LED module, the G-LED module, and the B-LED module, and are output in a staggered manner to three receiving resonant coils corresponding to the three transmitting resonant coils.

[0044] Step S04: The three receiving resonant coils receive the corresponding wireless power transmission signals in sequence, and respectively generate electric energy to be output to the corresponding R-LED module, G-LED module, and B-LED module for power supply.

[0045] refer to Figure 2 and Figure 3 As shown, three PWM signals with the same duty cycle are outputted in sequence at a set interval time t to control the R-LED module, the G-LED module and the B-LED module respectively, and are integrated into three wireless power transmission signals corresponding to the three carrier signals with the same duty cycle, so that the three receiving resonant coils receive the corresponding wireless power transmission signals A1, B1 and C1 in sequence, and the wireless power transmission signals A1, B1 and C1 are as shown in FIG. Figure 2 Misaligned output shown.

[0046] Since the interval time t=1 / 3*T, the phase difference between the wireless transmission signals A1, B1 and C1 is 120 degrees, that is, the phase of the wireless transmission signal B1 is shifted by 120 degrees compared with the phase of the wireless transmission signal A1, and the phase of the wireless transmission signal C1 is shifted by 120 degrees compared with the phase of the wireless transmission signal B1, so that the three receiving resonant coils receive the corresponding wireless transmission signals A1, B1 and C1 in turn, and form power supply current outputs respectively, so that the power supply current is as follows: Figure 3 As shown in the figure, the peak and valley values ​​are reached in sequence within a complete cycle, thereby forming a relatively stable current output, avoiding the need for the power supply module to continuously switch between full load and no-load states, helping to reduce the load fluctuation of the power supply module, making the power supply current more even, thereby reducing the performance requirements of the power supply module, helping to reduce the use and maintenance costs of the power supply module, and increasing the service life of the power supply module.

[0047] Step S05: respectively extract the wireless power transmission signals of the three receiving resonant coils, rectify and transform the three wireless power transmission signals into corresponding three PWM signals, and then output them to the corresponding R-LED module, G-LED module, and B-LED module, and sequentially drive the R-LED module, G-LED module, and B-LED module to perform variable light emission operations.

[0048] The transmitting resonant coil receives the wireless power transmission signal and generates a fixed frequency electric energy electromagnetic field and a signal electromagnetic field; the receiving resonant coil uses the characteristics of near-field transmission to receive the fixed frequency electric energy electromagnetic field and convert it into electric energy, which is then rectified and filtered and then output to the R-LED module, G-LED module, or B-LED module electrically connected to the corresponding receiving resonant coil for power supply. The receiving resonant coil also uses the characteristics of near-field transmission to receive the fixed frequency signal electromagnetic field and convert it into signal electric energy, and extracts the PWM signal from the wireless power transmission signal carried in the signal electric energy and outputs it to the corresponding R-LED module, G-LED module, or B-LED module to control lighting effects such as brightness and color.

[0049] refer to Figure 4 and Figure 5 As shown, the present invention also provides a wirelessly driven lamp, which is applicable to the PWM signal and power transmission method as described above, and includes a lamp holder 1 and a lamp body 2.

[0050] Specifically, refer to Figure 8 As shown, the lamp holder 1 includes a disc holder 101, a base 102 integrally formed with the disc holder 101, and a cable 103. Three transmitting resonant coils 3 are arranged in the disc holder 101. The disc holder 101 is recessed inward to form a first receiving groove 1011. The three transmitting resonant coils 3 are arranged in the first receiving groove 1011, and a cover plate 4 for closing the first receiving groove 1011 is arranged on the first receiving groove 1011.

[0051] The provision of the cover plate 4 effectively protects the transmitting resonant coil 3 in the first receiving groove 1011 and avoids interference and damage from the external environment, thereby helping to protect the stability of wireless power transmission of the transmitting resonant coil 3 and helping to extend the service life of the lamp holder 1.

[0052] Among them, reference Figure 6 , Figure 8 and Fig.11As shown, the disc base 101 is provided with three first mounting plates 5 for mounting the transmitting resonant coil 3, and the cover plate 4 is provided with an annular protrusion 6 corresponding to the first mounting plate 5 on the side close to the transmitting resonant coil 3, and the annular protrusion 6 is sleeved on the outside of the transmitting resonant coil 3 and abuts against the first mounting plate 5. In this embodiment, the disc base 101 is provided with three first mounting plates 5 for mounting the transmitting resonant coil 3, and the annular protrusions 6 are provided in total of three and are interconnected.

[0053] By setting the annular protrusion 6, the corresponding transmitting resonant coil 3 can be fixed at a preset position and isolated from the outside world, thereby reducing external interference to the transmitting resonant coil 3, enabling it to transmit power transmission and signal communication to the corresponding position, thereby ensuring the stability of power transmission and signal transmission.

[0054] In this embodiment, a sealing ring (not shown in the figure) is provided on the inner circumference of the first receiving groove 1011. When the cover plate 4 closes the first receiving groove 1011, the outer circumference of the cover plate 4 is in close contact with the sealing ring to achieve sealing of the first receiving groove 1011 and prevent external moisture from entering and affecting the power transmission of the transmitting resonant coil 3.

[0055] refer to Fig. 9 and Fig.10 As shown, the outer circumference of the disk base 101 extends outward to form a plurality of locking hole seats 104, and each of the locking hole seats 102 is provided with a locking hole 1041. In this embodiment, the locking hole seats 104 and the top surface of the disk base 101 are on the same horizontal plane.

[0056] The outer circumference of the pan base 101 further extends outward to form a plurality of fixing seats 105 , each of which is provided with a thread groove 1051 , and the pan base 101 is fixed to another reserved hole of the bathtub through the thread groove 1051 , thereby achieving the fixation of the lamp and the bathtub.

[0057] refer to Figure 6 , Figure 7 and Figure 8 As shown, the base 102 is connected to the disc base 101, and a control circuit board 7 is provided in the base 102; the cable 103 is arranged at one end of the base 102 away from the disc base 101, and is electrically connected to the control circuit board 7; and the transmitting resonant coils 3 are electrically connected to the control circuit board 7 respectively.

[0058] The base body 102 is provided with a receiving cavity 1021 , and the control circuit board 7 is located in the receiving cavity 1021 ; the first receiving groove 1011 is provided with a wire hole 1025 , and the wire hole 1025 is communicated with the receiving cavity 1021 .

[0059] The end of the base 102 away from the disc seat 101 is recessed inward to form a through groove 1022 communicating with the accommodating cavity 1021. The cable 103 is sleeved on a wire tube 8, and one end of the wire tube 8 is connected to the through groove 1022. In this embodiment, the inner wall of the through groove 1022 is provided with a first internal thread 1023, and the outer peripheral side of the wire tube 8 is provided with a first external thread 801 matching the first internal thread 1023. The through groove 1022 is sleeved on one end of the wire tube 8 and is threadedly connected to the first external thread 801 through the first internal thread 1023, thereby realizing a detachable connection between the wire tube 8 and the base 102.

[0060] The cable 103 is used for power supply and inputting control signals for controlling the lighting effect of the lamp body 2; the control circuit board 7 includes a PWM signal generating module, a signal modulation module and a carrier signal generating module (all not shown in the figure).

[0061] Among them, the PWM signal generating module is used to receive the control signal, and according to the control signal, staggeredly output three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module in sequence at a set interval time t; wherein the periods of the three PWM signals are all T, and t=1 / 3*T; the duty cycles of the three PWM signals are the same.

[0062] The signal source 3 is an LED controller, which is used to output a changing PWM signal to control the lighting effects of the R-LED module, the G-LED module and the B-LED module. The LED controller will generate corresponding PWM signals according to the brightness requirements and color display effect requirements of the R-LED module 7, the G-LED module 8 and the B-LED module 9 input by the user, and by adjusting the duty cycle of the PWM signal, the brightness of each LED module and the display effects of various colors can be adjusted.

[0063] By connecting the cable 103 in the lamp holder 1 to the power supply and the LED controller respectively, and inputting signals for controlling the lighting effect of the lamp board 202 respectively through the LED controller. By setting the PWM signal period, duty cycle and PWM signal output delay time of the PWM generating module, and according to the control signal input through the cable 103, the PWM generating module can stagger and output three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module in sequence, and make the duty cycle and period of the three PWM signals the same, so as to adjust the brightness of each LED module and the display effect of various colors, and make the three PWM signals staggered and output at a preset interval time.

[0064] The signal modulation module is used to integrate the effective levels of the three PWM signals with the carrier signals generated by the carrier signal generation module in a one-to-one correspondence, form three wireless power transmission signals, and then amplify and transmit them in sequence through corresponding transmitting resonant coils.

[0065] In this embodiment, the carrier signal is a high-frequency signal. The carrier signal generating module may be an oscillator, and the signal modulating module includes three modulation amplifiers corresponding to the three PWM signals. The oscillators are electrically connected to the corresponding modulation amplifiers, and the oscillators generate a high-frequency signal with a fixed frequency according to preset requirements and transmit it to the corresponding modulation amplifiers. After the PWM signal is input to the corresponding modulation amplifier, the modulation amplifier integrates the received high-frequency signal and the PWM signal into a wireless transmission signal and then amplifies and outputs it.

[0066] refer to Fig.12 , Fig.13 Good and Fig.14 As shown, a clamping column 1012 matching the clamping hole 1041 is provided at the bottom of the lamp body 2 , and the lamp body 2 is fixedly connected to the lamp holder 1 by embedding and fixing the clamping column 1012 in the clamping hole 1041 .

[0067] The lamp body 2 is provided with three receiving resonant coils 9, three detection modules (not shown in the figure) electrically connected to the three receiving resonant coils 9, and an R-LED module, a G-LED module, and a B-LED module electrically connected to the three detection modules respectively.

[0068] The receiving resonant coil 9 corresponds one-to-one to the transmitting resonant coil 3, and the receiving resonant coil 9 is used to receive the wireless power transmission signal transmitted by the corresponding transmitting resonant coil 3, and form electrical energy to be output to the corresponding R-LED module, G-LED module, and B-LED module in sequence for power supply.

[0069] By staggering the output of three PWM signals with the same period and duty cycle according to the set interval time t, the R-LED module, the G-LED module and the B-LED module are respectively used to control the three carrier signals with the same duty cycle, and the three wireless power transmission signals are integrated into three wireless power transmission signals one by one, so that the three receiving resonant coils receive the corresponding wireless power transmission signals A1, B1 and C1 in turn, and the wireless power transmission signals A1, B1 and C1 are as follows: Figure 2 As shown in the staggered output. Since the interval time t = 1 / 3*T, the phase difference between the wireless transmission signals A1, B1 and C1 is 120 degrees, so that the three receiving resonant coils receive the corresponding wireless transmission signals A1, B1 and C1 in turn, and form power supply current output respectively, so that the power supply current is as follows Figure 3As shown, the peak value and valley value are reached in sequence in a complete cycle, thereby forming a relatively stable current output, which is beneficial to reducing the use and maintenance cost of the power supply module and increasing the service life of the power supply module.

[0070] The detection module is used to extract the wireless power transmission signal corresponding to the receiving resonant coil, and rectify and transform the three wireless power transmission signals into corresponding three PWM signals, and output and drive the corresponding R-LED module or G-LED module or B-LED module to perform light-emitting operation.

[0071] In this embodiment, the detection module is a detection circuit. The detection circuit includes a rectifier circuit and a filter circuit. Preferably, the rectifier circuit includes a diode, and the filter circuit is composed of the receiving resonant coil and a capacitor. The receiving resonant coil is used to receive the wireless power transmission signal and transmit it to the diode and the capacitor. The diode and the capacitor extract the PWM signal from the wireless power transmission signal by rectifying and filtering the wireless power transmission signal, and remove high-frequency noise, so that the output signal is smoother.

[0072] Specifically, the lamp body 2 includes a base 201, a lamp board 202 and a lampshade 203. The base 201 is provided with a clamping column 1012 matching the clamping hole 1041 at the bottom, and the base 201 is fixedly connected to the lamp holder 1 by embedding and fixing the clamping column 1012 in the clamping hole 1041. The receiving resonant coil 9 is arranged on the base 201, and the lamp board 202 is fixed on the base 201 and electrically connected to the receiving resonant coil 9; the lamp board 202 is provided with the detection module and the R-LED module, the G-LED module, and the B-LED module; the lampshade 203 is sleeved on the lamp board 202, and the lamp board 202 is driven to emit light through the cooperation of the transmitting resonant coil 3 and the receiving resonant coil 9.

[0073] In this embodiment, the bottom of the base 201 is recessed inward to form a second receiving groove 1013 , and there are four clamping columns 1012 disposed in the second receiving groove 1013 .

[0074] The bottom of the base 201 is provided with a clamping column 1012, and the clamping column 101 is embedded and fixed in the clamping hole 1041 of the lamp holder 1, so that the lamp body 2 and the lamp holder 1 are fixedly connected, so that the transmitting resonant coil 3 can be aligned with the position of its corresponding receiving resonant coil 9 and fixed, thereby effectively avoiding the situation that the lamp body 2 shakes or shifts due to collisions and other reasons during use, which causes the transmission resonant coil 3 and the corresponding receiving resonant coil 9 to be misaligned, resulting in unstable power and signal transmission or interference, thereby ensuring the stability of the light emission of the wireless drive lamp board 203, improving the power transmission efficiency and the comfort of the lamp use experience. At the same time, through the fixed connection between the lamp holder 1 and the lamp body 1, it is only necessary to open a mounting hole for installing the lamp holder 1 in the use location such as a bathtub, and there is no need to open a hole to install the lamp body 1, thereby reducing unnecessary openings and reducing the difficulty of disassembly and installation.

[0075] The base 201 is provided with three annular grooves 2011 , and the receiving resonant coil 9 is installed in the annular grooves 2011 . The annular grooves 2011 are each provided with a second mounting plate 10 for closing the annular grooves 2011 .

[0076] In this embodiment, the base 201 is provided with three receiving resonant coils 9 corresponding one-to-one to the transmitting resonant coil 3; the base 201 is provided with three annular grooves 2011; the light board 202 is provided with an R-LED module, a G-LED module, and a B-LED module, and the R-LED module, G-LED module, and B-LED module are electrically connected to the receiving resonant coils 9 one-to-one respectively.

[0077] The present invention provides a wirelessly driven lamp, which receives the wireless power transmission signal through the transmitting resonant coil 3 and generates a fixed frequency electric energy electromagnetic field and a signal electromagnetic field; the receiving resonant coil 9 receives the fixed frequency electric energy electromagnetic field by using the characteristics of near-field transmission and converts it into electric energy, which is output to the R-LED module or G-LED module or B-LED group electrically connected to the corresponding receiving resonant coil 9 after rectification and filtering for power supply. The receiving resonant coil 9 also receives the fixed frequency signal electromagnetic field by using the characteristics of near-field transmission and converts it into signal electric energy, and extracts the PWM signal in the wireless power transmission signal carried in the signal electric energy through the detection module and outputs it to the corresponding R-LED module or G-LED module or B-LED module to control the brightness and color of the R-LED module or G-LED module or B-LED module, effectively improves the transmission speed of the PWM signal, realizes the synchronization of the PWM signal and the energy consumption of each LED module, realizes the maximum power transmission of wireless power transmission, is conducive to improving the power utilization rate and the reliability of wireless lamps, and saves the production and use costs of wireless lamps.

[0078] At the same time, three PWM signals with the same period and duty cycle are outputted in sequence according to the set interval time t to control the R-LED module, G-LED module and B-LED module respectively, and are integrated into three wireless power transmission signals corresponding to the three carrier signals with the same duty cycle, so that the wireless power transmission signals A1, B1 and C1 have a set phase difference as follows: Figure 2 As shown in the staggered output, the three receiving resonant coils receive the corresponding wireless power transmission signals A1, B1 and C1 in sequence, and form power supply current outputs respectively, so that the output power supply current is as follows Figure 3 As shown, the peak value and valley value are reached successively in a complete cycle, thereby forming a relatively stable current output, thereby reducing the performance requirements of the power supply module, which is beneficial to reducing the use and maintenance costs of the power supply module and increasing the service life of the power supply module.

[0079] A plurality of support columns 2012 are provided on the base 201 outside the receiving resonant coil 9, and a plurality of through holes 2021 corresponding to the support columns 2012 are provided on the lamp board 202, and the through holes 2021 are sleeved on the corresponding support columns 2012 to achieve the fixing of the lamp board 202 on the base 201. In this embodiment, a circular hole is further provided on the lamp board 202, and a cylinder corresponding to the circular hole is provided on the base 201, and a thread groove is provided in the cylinder, and a screw is passed through the circular hole to be threadedly connected with the thread groove, so as to further achieve the tight fixing of the lamp board 202 on the base 201.

[0080] A mounting seat 11 is sleeved on the outer side of the base 102, and the base 102 is further mounted on a reserved hole of a bathtub through the mounting seat 1, so as to realize a detachable fixed connection between the lamp and the bathtub.

[0081] Among them, a second external thread 1024 is provided on the outer peripheral side of the base 102, a second internal thread 111 matching the second external thread 1024 is provided on the inner peripheral side of the mounting seat 11, and a third external thread 112 is provided on the outer peripheral side of the mounting seat 11; the mounting seat 11 is sleeved on the outside of the base 102, and is threadedly connected with the second internal thread 111 through the second external thread 1024, so as to realize a detachable fixed connection between the mounting seat 11 and the lamp holder 1.

[0082] The outer peripheral side of the mounting seat 11 close to the disc base 101 extends outward to form a flange 113 . When the mounting seat 11 is sleeved on the outside of the base 102 , the flange 113 abuts against the bottom of the disc base 101 .

[0083] refer to Fig.15As shown, a plurality of ribs 2031 are provided on the inner side of the light emitting surface of the lampshade 203 ; the provision of the ribs 2031 can guide the propagation direction of the light emitted by the lamp panel 202 , so that the light is more evenly distributed in the space, and can prevent glare, while increasing the structural stability of the lampshade 203 .

[0084] The above description is only a specific implementation scheme of the invention, but those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Therefore, equivalent changes made to the scope of the patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. A PWM signal and electric energy transmission method, characterized in that: include: S01: outputting three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module in sequence at a set interval t; wherein the periods of the three PWM signals are all T, and t=1 / 3*T; and the duty ratios of the three PWM signals are all the same; S02: integrating the effective levels of the three PWM signals with the carrier signals corresponding to the three PWM signals to form three wireless power transmission signals; wherein the duty cycles of the carrier signals corresponding to the three PWM signals are the same; S03: After the three wireless transmission signals are amplified, they are received in sequence by three transmitting resonant coils corresponding to the R-LED module, the G-LED module, and the B-LED module, and are output to three receiving resonant coils corresponding to the three transmitting resonant coils in a staggered manner; S04: The three receiving resonant coils receive the corresponding wireless power transmission signals in turn, and respectively generate electric energy and output it to the corresponding R-LED module, G-LED module, and B-LED module for power supply; S05: respectively extracting the wireless power transmission signals of the three receiving resonant coils, rectifying the three wireless power transmission signals into corresponding three PWM signals, and outputting them to the corresponding R-LED module, G-LED module, and B-LED module, and driving the R-LED module, G-LED module, and B-LED module in turn to perform variable light emission operations.

2. A wirelessly driven lamp, comprising a lamp holder and a lamp body, characterized in that: The lamp holder comprises a disc seat, a base body integrally formed with the disc seat, and a cable, three transmitting resonant coils are arranged in the disc seat, and the outer peripheral side of the disc seat extends outward to form a plurality of clamping hole seats, each of which is provided with a clamping hole; The base is connected to the disc seat, and a control circuit board is arranged in the base; the cable is arranged at one end of the base away from the disc seat, and is electrically connected to the control circuit board; and the transmitting resonant coils are electrically connected to the control circuit board respectively; The cable is used for power supply and inputting control signals for controlling the lighting effect of the lamp body; the control circuit board includes a PWM signal generating module, a signal modulation module and a carrier signal generating module; The PWM signal generating module is used to receive the control signal, and according to the control signal, staggeredly output three PWM signals for controlling the R-LED module, the G-LED module and the B-LED module at a set interval t; wherein the periods of the three PWM signals are all T, and t=1 / 3*T; the duty cycles of the three PWM signals are all the same, The signal modulation module is used to integrate the effective levels of the three PWM signals with the carrier signals generated by the carrier signal generation module in a one-to-one correspondence, to form three wireless power transmission signals, which are then amplified and transmitted in sequence through corresponding transmitting resonant coils; The bottom of the lamp body is provided with a clamping column matching the clamping hole, and the lamp body is fixedly connected to the lamp holder by embedding the clamping column into the clamping hole; The lamp body is provided with three receiving resonant coils, three detection modules electrically connected to the three receiving resonant coils, and an R-LED module, a G-LED module, and a B-LED module electrically connected to the three detection modules respectively; The receiving resonant coil corresponds to the transmitting resonant coil one by one, and the receiving resonant coil is used to receive the wireless power transmission signal transmitted by the corresponding transmitting resonant coil, and form electric energy to be output to the corresponding R-LED module, G-LED module, and B-LED module in sequence for power supply; The detection module is used to extract the wireless power transmission signal corresponding to the receiving resonant coil, and rectify and transform the three wireless power transmission signals into corresponding three PWM signals, and output and drive the corresponding R-LED module or G-LED module or B-LED module to perform light-emitting operation.

3. A wirelessly driven lamp according to claim 2, characterized in that: The disc seat is recessed inward to form a first receiving groove, the transmitting resonant coil is arranged in the first receiving groove, and a cover plate for closing the first receiving groove is provided on the first receiving groove; a receiving cavity is provided in the base, and the control circuit board is located in the receiving cavity; a wire hole is provided in the first receiving groove, and the wire hole is communicated with the receiving cavity.

4. A wirelessly driven lamp according to claim 2, characterized in that: The disc base is provided with three first mounting plates for mounting the transmitting resonant coil, and the cover plate is provided with an annular protrusion corresponding to the first mounting plate on one side close to the transmitting resonant coil. The annular protrusion is sleeved on the outside of the transmitting resonant coil and abuts against the first mounting plate.

5. The wirelessly driven lamp according to claim 2, characterized in that: The base is provided with three annular grooves, and the receiving resonant coil is installed in the annular grooves, and each of the annular grooves is provided with a second mounting plate for closing the annular grooves.

6. The wirelessly driven lamp according to claim 2, characterized in that: The base is recessed inward at one end away from the disc seat to form a through groove connected to the accommodating cavity. The cable is sleeved on a wire tube, and one end of the wire tube is connected to the through groove. The inner wall of the through groove is provided with a first internal thread, and the outer peripheral side of the wire tube is provided with a first external thread matching the first internal thread. The through groove is sleeved on one end of the wire tube and is threadably connected to the first external thread through the first internal thread.

7. The wirelessly driven lamp according to claim 2, characterized in that: A mounting seat is sleeved on the outer side of the base, and the base is installed on a reserved hole in a bathtub through the mounting seat; a second external thread is provided on the outer peripheral side of the base, a second internal thread matching the second external thread is provided on the inner peripheral side of the mounting seat, and a third external thread is provided on the outer peripheral side of the mounting seat; the mounting seat is sleeved on the outer side of the base and is threadedly connected to the second internal thread through the second external thread.

8. The wirelessly driven lamp according to claim 2, characterized in that: The outer peripheral side of the pan seat also extends outward to form a plurality of fixing seats, each of which is provided with a thread groove, and the pan seat is fixed to another reserved hole position of the bathtub through the thread groove.

9. The wirelessly driven lamp according to claim 2, characterized in that: The lamp body includes a base, a lamp board and a lampshade, the clamping column is arranged at the bottom of the base, and the base is fixedly connected to the lamp holder by embedding the clamping column in the clamping hole; the receiving resonant coil is arranged on the base, and the lamp board is fixed on the base and located above the receiving resonant coil; the detection module and the R-LED module, the G-LED module, and the B-LED module are arranged on the lamp board; the lampshade is sleeved on the lamp board.

10. The wirelessly driven lamp according to claim 9, characterized in that: A plurality of supporting columns are arranged on the base outside the receiving resonant coil, and a plurality of through holes corresponding to the supporting columns are arranged on the lamp board, and the lamp board is sleeved on the corresponding supporting columns through the through holes.

Images