TWI395388B - Light sensor - based charger identification method - Google Patents

Description

Light sensing charger identification method

The invention provides a light-sensing charger identification method, in particular, a light receiver and a light emitter are added as a recognition device on the transmitting end and the receiving end, and the receiving end microprocessor determines the receiving state by using the light receiving state of the optical receiver. At the end, wireless power can be transmitted to the receiving end for charging.

According to the era of electronic technology and the Internet, the digital products are filled with various digital products, such as digital cameras, mobile phones, multimedia players (MP3 or MP4, MP5 players) and other images or sounds. Portable electronic devices, and portable electronic devices are designed to be light, thin, short, and small.

However, if the portable electronic device is to be portable, the first thing that must be solved is the problem of power consumption. The most common way is to install a rechargeable battery inside the portable electronic device, so that when the power is exhausted, Recharge, but the portable electronic devices of each brand have different specifications, and each has a specific compatible charger. Each purchase of a new portable electronic device requires an additional compatible The charger greatly increases the cost of the purchase, and the charger management of the plurality of portable electronic devices is quite inconvenient and takes up a certain space, which is unfavorable for storage and carrying.

In addition, some manufacturers have developed a wireless charging device that uses electromagnetic wave induction to transmit power. The contactless electromagnetic wave induction power supply method has excellent convenience, so it has attracted much attention in the market. At present, a variety of wireless charging devices on the market can be mainly divided into device identification and device identification. The system without device identification is designed to continuously transmit wireless electromagnetic wave energy at the transmitting end, regardless of the object at the receiving end. The transmitting antenna will continuously transmit power to the object. At this time, if the power receiving end is placed on a non-designed charger, the power supply will heat the metal object and cause danger in use, and the system with device identification is designed as The power receiving terminal charger is provided with a microprocessor, and the signal can be sent back to the transmitting end for identification. When the device is designed as a charger for the system design, the receiving end begins to charge, thereby knowing that the system design safety of the device identification device is known. It is better, so the device with device identification is applied to the wireless charging device for the necessary design under the safety consideration, but the system is transparent. The wireless communication method is used to transmit signals, so that the microprocessor needs to set a microprocessor or a test chip on the power receiving end, and the circuit layout is complicated, which results in high production cost and high cost design cannot be applied to low-priced electronic products. It is limited, and those who are still in the industry are redesigned to solve it.

Therefore, the inventors have designed and developed such light-sensitive chargers through continuous trials and revisions through the multi-party evaluation and consideration of the relevant information through the multi-party evaluation and consideration. Identification method The birth of the invention patent.

The main purpose of the present invention is to add a light receiver and a light emitter as a simple identification device at the transmitting end of the power base and the receiving end of the wireless charging receiver, and determine the corresponding state by the light receiving state of the light receiving unit by the microprocessor at the transmitting end. At the receiving end, the power base can transmit wireless charging electromagnetic wave energy to the receiving end for charging, and the receiving end can complete the power supply energy as long as the simple line configuration, no need to set the microprocessor in the wireless charging receiver, thereby simplifying the whole Circuit layout, extensive use of electronic components, and low-cost design can be widely used in low-priced electronic products (such as toys, home phones or remote controls), and achieve wireless charging.

The secondary object of the present invention is that the microprocessor of the transmitting end of the power base can automatically analyze the coil oscillation characteristics of the power supply resonant circuit through the voltage detecting circuit, adjust the output power of the variable frequency control output to optimize the power output, and reduce the energy transmission process. Loss, and excess power conversion, while having a variable frequency charger function and power saving effect, and displaying a corresponding multi-function display such as system time, charging time, and charging state by the display module, the user can easily know the current status of use.

The secondary purpose of the present invention is that when the receiving end of the wireless charging receiver is not placed on the power base, the transmitting end of the power base enters the sleep mode, thereby reducing the power consumption for continuous use and consumption, and saving power and reducing costs, and Improve the security of use.

In order to achieve the above objects and effects, the technical means and the configuration of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first, second and third figures, which are block diagrams of the power supply base of the present invention, a block diagram of the wireless charging receiver, and a flow chart of the steps. As is clear from the figure, the present invention includes a power base 1 And the wireless charging receiver 2, wherein the base 10 of the power base 1 houses a circuit board with a preset circuit layout and electronic components, and the circuit board is provided with a microprocessor 11 and a microprocessor The power circuit 12 is connected to the external power source 3 and supplies the low voltage power of the microprocessor 11. The microprocessor 11 is electrically connected to the driving circuit 13 which can supply the high voltage power source by the power circuit 12, and is connected to the driving circuit 13 A gold-oxygen half-field effect transistor array 131 is provided, and the gold-oxygen half-field effect transistor array 131 is electrically connected to the power supply resonance circuit 14, and the power supply resonance circuit 14 is electrically connected with a power supply coil 15 capable of transmitting energy, and The resonant circuit 14 is connected in parallel with the optical receiver 16 and the voltage detecting circuit 17 capable of checking the voltage change of the power supply resonant circuit 14 and the optical receiver 16 and converting the corresponding voltage signal to the microprocessor 11; There can be connected to the display module 18 of the use state.

The wireless charging receiver 2 is provided with a light emitter 21 that can emit light signals and a power receiving coil 22 that receives power energy by electromagnetic waves. The power receiving coil 22 is electrically connected to the power receiving resonant circuit 23, and the power receiving resonant circuit 23 is electrically connected. The rectifying and filtering circuit 24 can receive the rectifying and filtering circuit 24 that can receive the converted AC power and convert it into the DC power output, and the rectifying and filtering circuit 24 is electrically connected to the circuit breaker that can receive the transmitted signal and convert it into the light source signal and feed back to the optical transmitter 21. The circuit 25 and the circuit breaker protection circuit 25 are electrically connected to the charging module 26 which can receive the DC power transmitted by the rectifying and filtering circuit 24 for charging and output the DC power to the electronic device 4, and then the charging module is judged by the circuit breaker protection circuit 25. When the voltage is full, the rectifier filter circuit 24 is turned off to stop supplying power and the light source signal is not fed back to the light emitter 21.

Furthermore, the base 10 of the power base 1 is provided with a light receiving hole 101 through which the light receiver 16 is exposed, and the light emitter 21 of the wireless charging receiver 2 is provided with a light-receiving hole 101. a light-emitting element 211 in a positive state, and the light-emitting element 211 can be a light-emitting diode, a bulb or a tube, and the like, such that the emitted light can be transmitted through the light-receiving hole 101 to the light emitter 21 opposite to the base 10; In addition, the power supply circuit 12 and the charging module 26 of the power supply base 1 and the wireless charging receiver 2 are respectively electrically connected with a power input interface 19 and a power output interface 27, wherein the power input interface 19 can be a universal serial bus (USB). The AC power transformer or the mains plug, and the power output interface 27 can be a universal serial bus (USB) or a DC power plug or socket of the electronic device 4, which is simply modified and etc. using the description and the drawings of the present invention. The structural changes should be included in the scope of the patent of the present invention and combined with Chen Ming.

When the light sensing type charger identification method of the present invention is utilized, the following steps are implemented:

(100) The transmitting end optical receiver 16 is prepared to set the optical signal of the optical receiver 16 after the power supply base 1 is turned on.

(101) The light source is inspected, and the light receiver 16 signal is transmitted to the microprocessor 11 via the voltage detecting circuit 17 for determination.

(102) Determine the brightness, if it is bright, proceed to step (103); if it is dark, proceed to step (104).

(103) If there is no cover or no power is transmitted in a bright place, and a bright light is received when no electromagnetic wave energy is emitted, it is judged that the wireless charging receiver 2 is not placed, and the step (100) is repeated.

(104) There is a cover or a dark place. When the light suddenly darkens or remains in the dark, it is also possible that the charging module 26 is fully charged and the light-emitting element 211 does not respond.

(105) transmitting short electromagnetic wave energy to the receiving end. If the charging module 26 of the wireless charging receiver 2 is not fully charged, it will feed back the same time light source signal with the short electromagnetic energy to the optical receiver 16, in response to the power base 1 The status is judged to require charging.

(106) Judging the response, the response state is divided into charging and charging is not required, if it is dark, step (107) is performed; if it is short, then step (108) is performed.

(107) No response, that is, the non-receiver or fully charged, so no power is transmitted, and no response may be that the corresponding wireless charging receiver 2 is not placed or the charging module 26 is fully charged without being powered.

(108) In response, the receiving end starts to transmit power, and after determining that there is a response, the power base 1 starts to transmit power to the wireless charging receiver 2.

(109) Re-checking after a predetermined charging time, in the state of charging the light-emitting element 211 during charging, if the wireless charging receiver 2 is suddenly removed during charging, the light receiving device 16 may receive an external light and may be misjudged and still charging, so Turn off the charge and check again after every predetermined time.

It can be clearly seen from the above implementation steps that the light sensor type charger of the present invention comprises a power base 1 and a wireless charging receiver 2, wherein the power base 1 can utilize a power output interface 27 (such as a universal serial bus, an AC transformer or The mains plug, etc. is connected to the external power source 3, so that the AC power transmitted by the external power source 3 is converted into a DC power source through the power source circuit 12, and a stable low-voltage power source is supplied to the microprocessor 11 and the drive circuit 13, and the microprocessor is used. The built-in software program can check and analyze the power output of the power supply resonant circuit 14 and the light receiving state of the optical receiver 16 through the voltage detecting circuit 17, and can determine whether or not to transmit power to the receiving end.

When the power supply base 1 is turned on, the optical signal of the optical receiver 16 is set to be determined, so that the optical receiver 16 can convert the received optical signal into a corresponding voltage signal through the light receiving hole 101 on the base 10 via the voltage detection. The circuit 17 checks the voltage condition and then transmits it to the microprocessor 11 to determine whether the light is dark or not. The way to determine the brightness is to continuously check the previous time point (such as the previous second or the second) by using the microprocessor 11 built-in program. And the current light changes, and the light darkening may be an environmental factor. For example, during the daytime night, the brightness of the light suddenly darkens and is blocked by the light hole 101, which may be placed at the receiving end of the corresponding wireless charging receiver 2. Or the other object is covered. If the brightness is determined to be bright, the power supply resonant circuit 14 does not emit electromagnetic wave energy through the power supply coil 15, and the light receiver 16 receives the bright light, and it is determined that no wireless charging is placed on the power base 1. Receiver 2, no cover or no power in the bright place; if it is judged that the brightness is dark, it can be judged that the power base 1 has a wireless charging receiver 2, the cover or in the dark, when the light suddenly darkens or remains in the dark, it is also possible that the charging module 26 has been fully charged, the light-emitting element 211 of the light emitter 21 does not respond, at this time, the power supply resonant circuit 14 is matched with the power supply coil 15 to generate resonance to emit wireless charging electromagnetic wave energy, and send short-term (such as zero-one second, zero-second, etc.) wireless charging electromagnetic wave energy to the wireless charging receiver 2 receiving end, if the circuit breaker is protected The circuit 25 determines that the voltage of the charging module 26 is not fully charged, and can receive the signal transmitted by the rectifying and filtering circuit 24 and feed back the same time source signal of the short electromagnetic energy to the light emitter 21, so that the light emitting element 211 emits light to the light receiving. The device 16 determines that charging is required in response to the state of the power supply base 1.

Furthermore, the response state is divided into charging and charging, and if it is dark, the non-responding may be non-positioning. The receiving end of the wireless charging receiver 2 or the charging module 26 is fully charged and not powered; if it is short-lived When it is determined that the response is the receiving end, the wireless charging receiver 2 is started to be powered. During charging, the state of the light emitting element 211 is continuously illuminated. However, if the wireless charging receiver 2 is suddenly removed during charging, the light of the power base 1 is The receiver 16 receives the external light and may be misjudged and still charging. Therefore, the charging module 26 needs to re-check according to the above-mentioned inspection light source step after charging for a predetermined time. If the disconnection protection circuit 25 determines the charging module 26 When the battery is fully charged, the connection between the rectifying and filtering circuit 24 and the charging module 26 is cut off, and the light source signal is not returned to the light emitter 21, so that the light emitting element 211 does not respond to the power supply base 1 and is determined not to be charged. The charging base is stopped, and the power base 1 is designed by using the light receiving hole 101, and the light receiver 16 and the light emitter 21 are added to the power base 1 and the wireless charging receiver 2 as knowledge. The device can enable the wireless charging receiver 2 to complete the power supply with a simple line configuration, and does not need to have a microprocessor or a detecting chip at the receiving end of the wireless charging receiver 2 to simplify the overall circuit layout and a large number of devices. Reduce electronic components, and low-cost design can be widely used in low-priced electronic products (such as toys, home phones or remote controls), and achieve the effect of wireless charging, you can also directly use the charging module 26 to the electronic device 4 to charge.

When the transmitting end of the power base 1 is powered, the microprocessor 11 first transmits the frequency signal to the driving circuit 13, and pushes the gold-oxygen half field effect transistor array 131 switch to drive the power supply resonant circuit 14, and then the power supply resonant circuit. 14 is matched with the power supply coil 15 to generate resonance to emit wireless charging electromagnetic wave energy to the receiving end of the wireless charging receiver 2, and the power receiving coil 22 is used to receive power energy by electromagnetic wave induction, and matched with the power receiving resonance circuit 23 to maximize energy transmission. Then, the AC power transmitted by the power receiving resonant circuit 23 is converted into a DC power output to the circuit breaker protection circuit 25 through the rectifier filter circuit 24, and when the voltage of the charging module 26 is not fully charged via the circuit breaker protection circuit 25, the voltage can be high. The power is supplied to the charging module 26 for charging, or directly outputs the DC power to the electronic device 4 by using the charging module 26 for charging, thereby achieving the purpose of wireless charging, and the microprocessor 11 of the transmitting end of the power base 1 can be The coil detection circuit 17 automatically analyzes the coil oscillation characteristics of the power supply resonance circuit 14 and the inverter control output energy. The overall power output is optimized, and the unnecessary loss in the energy transmission process, and the excess power conversion are reduced, and the function of the frequency conversion type charger is provided, thereby achieving the power saving effect, and at the same time, the display module 18 can be used. A status indicator, a seven-segment display or a liquid crystal display formed by one or more light-emitting diodes displays a corresponding multi-function display such as system time, charging time, and charging state, which is convenient for the user to know. Current usage status.

Therefore, the present invention mainly applies to the transmitting end of the power base 1 and the receiving end of the wireless charging receiver 2, and the optical receiver 16 and the light emitter 21 are added as simple identification devices, and the microprocessor 11 of the transmitting end utilizes the optical receiver. 16 The light receiving state determines whether it is the corresponding wireless charging receiver 2 receiving end. If it is the wireless charging receiver 2, the power base 1 can emit wireless charging electromagnetic wave energy to be sent to the receiving end for charging, and the receiving end only needs to be simple. The line configuration can complete the power supply, and there is no need to set up a microprocessor, so as to simplify the overall circuit layout and greatly reduce the use of electronic components, thereby achieving the effect of reducing the construction cost; and when the power base 1 is not placed with wireless charging reception When the receiving end of the device 2, the transmitting end of the power base 1 enters the sleep mode, thereby reducing the power consumption for continuous use and consumption, and achieving power saving, cost reduction, and safety in use, but only the above For the preferred embodiment of the present invention, the scope of the invention is not limited thereto, and the specification and drawings of the present invention are used. The simple modifications and equivalent structural changes are included in the scope of patents covered by the present invention and are given to Chen Ming.

In summary, the above-described light-sensing charger identification method of the present invention can achieve its efficacy and purpose when it is used. Therefore, the present invention is an invention with excellent practicability, and is an application for conforming to the invention patent, Applying in accordance with the law, I hope that the trial committee will grant this case as soon as possible to protect the inventor's hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions, the inventor will try his best to cooperate and feel polite.

1. . . Power base

10. . . Seat

101. . . Light receiving aperture

11. . . microprocessor

12. . . Power circuit

13. . . Drive circuit

131. . . Gold oxygen half field effect transistor array

14. . . Power supply resonant circuit

15. . . Power supply coil

16. . . Optical receiver

17. . . Voltage detection circuit

18. . . Display module

19. . . Power input interface

2. . . Wireless charging receiver

twenty one. . . Light emitter

211. . . Light-emitting element

twenty two. . . Power receiving coil

twenty three. . . Power receiving resonant circuit

twenty four. . . Rectifier filter circuit

25. . . Circuit breaker protection circuit

26. . . Charging module

27. . . Power output interface

3. . . External power supply

4. . . Electronic device

The first figure is a block diagram of the power base of the present invention.

The second figure is a block diagram of the wireless charging receiver of the present invention.

The third figure is a flow chart of the steps of the present invention.

The fourth figure is a schematic structural view of a preferred embodiment of the present invention.

Claims (8)

A light-sensing charger identification method, wherein the light-sensing charger comprises a power base and a wireless charging receiver, and the base of the power base is provided with a light-receiving hole for the light receiver to be exposed, and the wireless charging receiving The light emitter of the device is provided with a light-emitting element that can form a light emitted by the light-receiving hole, and is implemented according to the following steps: (a) preparation of the light-receiver at the transmitting end, setting the reading light receiver after the power base is turned on (b) checking the light source, the light receiver signal is transmitted to the microprocessor via the voltage detecting circuit for judgment; (c) determining the brightness, if it is bright, performing step (d), if In the dark, step (e); (d) no cover or no power in the bright place, no light emitting light when the light receiver receives the bright light, it is judged that there is no wireless charging receiver placed on the power base, no cover (b) repeating the steps (a); (e) having a cover, in a dark place, or a charging module of a wireless charging receiver, the charged light-emitting element does not respond; (f) The short-term electromagnetic wave energy to the receiving end, if the charging module of the wireless charging receiver is not fully charged, it will feed back the light source signal with the same electromagnetic wave energy to the light emitter, and cause the light-emitting component to emit light to the light receiver in response to the power source. The base is judged to need to be charged; (g) the response is judged, if it is dark, step (h) is performed, if it is short, then step (i) is performed; (h) no response is placed without corresponding wireless charging reception The receiving end or the charging module is fully charged and not powered; (i) there is a response for the receiving end to start transmitting power, and it is determined that the receiving end is the receiving end, then the power base starts to send power to the wireless charging receiver, and the charging is continued. The state of the light-emitting element is bright; (j) re-check after charging for a predetermined time, and the charging module is re-checked after every predetermined time after charging for a predetermined time, and then does not feed back the light source signal to the light emitter to stop charging. The light sensor type charger identification method according to the first aspect of the invention, wherein the microprocessor provided in the power base is electrically connected to a power circuit connectable to an external power source, and the microprocessor is electrically connected to the drive. a circuit, and a gold oxide half field effect transistor array is arranged in the driving circuit, and a gold-oxygen half field effect transistor array is electrically connected with a power supply resonant circuit, and the power supply resonant circuit is electrically connected with a power supply coil capable of transmitting energy, and a power supply resonance The circuit is connected with a light receiver and a voltage detecting circuit capable of checking the voltage change of the power supply resonant circuit and the optical receiver and converting it into a corresponding voltage signal and transmitting it to the microprocessor to determine whether to transmit or not to transmit power. The light sensor type charger identification method according to claim 2, wherein the microprocessor of the power base has a built-in permeable voltage detecting circuit for checking and analyzing the power output of the power supply resonant circuit and the light receiving state of the light receiver. Software program to determine if you want to send power to the wireless charging receiver. The light sensor type charger identification method according to claim 2, wherein the microprocessor of the power base is electrically connected to the display module capable of displaying the use state, and the display module can be one or more. A status indicator consisting of a light-emitting diode, a seven-segment display or a liquid crystal display. The light-sensing charger identification method according to the second aspect of the invention, wherein the power supply circuit of the power base is electrically connected with a power output interface connectable to an external power source, and the power output interface can be a universal serial bus. , AC transformer or mains plug. The light-sensing charger identification method according to the first aspect of the invention, wherein the wireless charging receiver is provided with a power receiving coil that receives electromagnetic energy by electromagnetic wave induction, and the power receiving coil is electrically connected to the power receiving resonant circuit, and receives power The resonant circuit is electrically connected with a rectifying and filtering circuit capable of receiving the converted AC power to the DC power output, and the rectifying and filtering circuit is electrically connected to receive the transmitted signal and convert it into a light source signal to be fed back to the optical transmitter to emit light. The power circuit is powered by a circuit breaker protection circuit, and the circuit breaker protection circuit is electrically connected with a charging module capable of receiving the DC power source transmitted by the rectifier filter circuit for charging and externally outputting the DC power source to the preset electronic device, and then determining the charging mode by the circuit breaker protection circuit. When the group voltage is full, the rectifier filter circuit is cut off to stop the power supply and the light source signal is not fed back to the light emitter. The light-sensing charger identification method according to the sixth aspect of the invention, wherein the charging module of the wireless charging receiver is electrically connected to a power output interface connectable to the preset electronic device, and the power output interface can be A DC power plug or socket for a universal serial bus or preset electronic device. The method of identifying a light-sensing charger according to claim 1, wherein the step (c) of determining the brightness is by using a microprocessor built-in program to continuously check the change of the previous time point and the current light, and the light Slowly dimming the brightness can be a daytime nighttime process, or the light-receiving apertures on the power base are shaded to suddenly dim the light.