CN110867919B - System capable of realizing synchronization of charging signals - Google Patents
System capable of realizing synchronization of charging signals Download PDFInfo
- Publication number
- CN110867919B CN110867919B CN201911144955.3A CN201911144955A CN110867919B CN 110867919 B CN110867919 B CN 110867919B CN 201911144955 A CN201911144955 A CN 201911144955A CN 110867919 B CN110867919 B CN 110867919B
- Authority
- CN
- China
- Prior art keywords
- charging
- signal
- waveform
- processor
- forming unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Abstract
The invention relates to a system capable of realizing charging signal synchronization, which comprises wearable equipment and a charging seat, wherein the wearable equipment comprises a charging port, a first processor and a first waveform forming unit; the charging port and the first processor are connected with a first waveform forming unit; the first processor is preset with a communication protocol, can select the preset communication protocol according to the current charging state and generate a waveform code, and processes the voltage input to the first waveform forming unit according to the waveform code to form a first signal.
Description
Technical Field
The invention relates to a charging control system, in particular to a system capable of realizing synchronization of charging signals.
Background
The existing intelligent wearable equipment has charging methods such as metal contact, wireless charging, metal bottom shell contact charging and the like in a charging mode of an intelligent watch bracelet, wherein the bottom shell is simple and attractive in appearance in a charging mode of the metal bottom shell and a charging base in a contact mode, so that the appearance design of a product is facilitated. Some charging stations require an indicator light to indicate the charging status, such as a red light for charging and a green light for fully charging. The charging base with the charging indicator lamp is generally in a wireless charging mode or a wireless communication chip, the charging base is in wireless communication with the charging equipment, when the charging equipment is charged, a charging state signal is sent in a wireless communication mode, at the moment, the charging base receives charging information through the built-in wireless transceiver chip, if the charging base is fully charged, the charging base turns off output and turns on a green light, and when the charging base is charged, a red light is turned on.
Because the charging state of the charging base needs to be kept synchronous with the charging device, for example, the screen displays the full-charge state after the device is fully charged, and the corresponding charging base should synchronously light the green light at this moment, the current processing mode is that the charging base is added with a current detection unit, the device is monitored whether the charging base is fully charged or in the charging state by detecting the output current of the charging base, no communication exists with the charging device, the charging device is charged by a charging chip and feeds back to the device main control chip, thereby realizing the charging state, but the charging base and the charging device are in a separate state, the charging base and the charging device do not have a communication path, the charging state is judged based on the charging base or the charging device self circuit, in this case, the charging state is inconsistent or asynchronous, for example, the full-charge state of the green light is displayed, but the charging device is still in the charging state at this moment, or the charging base is turned on and the lamp is turned on for a period of time, and then the charging equipment is fully charged, so that the consumer cannot determine whether the equipment is fully charged. In addition, wireless communication chips are added to the charging base and the charging equipment in another mode, if the wireless charging chip or the Bluetooth chip keeps communication, the wireless communication is kept constantly, the charging equipment constantly sends the electric quantity of the charging base to the charging base in the charging process, full-charge information is sent when the charging base is fully charged, the charging base and the charging equipment can keep synchronous charging state indication at the moment, the charging base synchronously lights up green light indication when the charging equipment is fully charged, but the wireless communication chips are required to be added to the charging base and the charging equipment in the mode, the cost is high, the circuit board space of the equipment is occupied, and the cost and the space layout of the wearable equipment are not facilitated. The metal contact charging mode is characterized in that the watch bottom shell is in metal surface contact with the charging seat, and the metal surface contact charging mode can cause micro-contact to cause loss and partial voltage drop, so that the charging base needs to be additionally provided with a boosting chip to ensure a normal equipment charging process.
Disclosure of Invention
In view of the above, the present invention provides a system capable of synchronizing charging signals based on the above drawbacks, and mainly solves the problem that a charging base of a wearable device, such as a smart watch bracelet, having a charging status indicator cannot keep synchronous charging status indication with a charging device or the high cost is incurred to solve the problem.
The specific technical scheme of the invention is as follows:
a system capable of realizing charging signal synchronization comprises a wearable device and a charging seat,
the wearable device comprises a charging port, a first processor and a first waveform forming unit;
the charging port and the first processor are connected with a first waveform forming unit;
the first processor is preset with a communication protocol, can select the preset communication protocol according to the current charging state and generate a waveform code, and processes the voltage input to the first waveform forming unit according to the waveform code to form a first signal;
the charging stand can be in contact with the charging port, so that the charging stand and the wearable device are connected;
the charging seat comprises a second processor, a second waveform forming unit and a charging indicator light, and the first signal is transmitted to the second processor through the connected connecting part;
the second processor is also preset with the communication protocol, the second processor judges the first signal, and the charging indicator lamp indicates according to the judgment result; meanwhile, the second processor selects a preset communication protocol according to the first signal and generates a waveform code, and a second waveform forming unit on the charging seat forms a second signal for the voltage input to the second waveform forming unit according to the waveform code;
the second signal is transmitted to the first processor through the connected connection;
and the first processor controls whether the first waveform forming unit continues to form the first signal or not according to the second signal.
Further, the communication protocol at least comprises:
the wearable device is in a first waveform adapted communication being charged, an
A second waveform adapted communication with the wearable device in a full power state.
Further, when the wearable device is in a charging state of being charged, the first signal and the second signal are both a first waveform, and a first waveform adaptation communication is achieved;
if the first processor receives and recognizes the second signal, stopping generating the waveform code;
if the second signal is not received within the time threshold after the first processor generates the waveform code, the first waveform forming unit continuously transmits the first signal to the charging seat until the transmission frequency reaches the preset frequency, or until the first processor receives the second signal.
Further, when the number of times of transmission reaches a predetermined number of times, the first processor still does not receive the second signal, and the first waveform forming unit stops transmitting the first signal to the charging dock;
and the first processor writes the stop sending event into a flag bit mark of a program until the next time the charging equipment is normally powered on, and the first processor reselects a preset communication protocol according to the current charging state and generates a waveform code.
Further, when the wearable device is in a fully charged state of charge, the first signal and the second signal are both of a second waveform, and second waveform adaptation communication is achieved; if the first processor receives and recognizes the second signal, stopping generating the waveform code;
if the second signal is not received within the time threshold after the first processor generates the waveform code, the first waveform forming unit continuously transmits the first signal to the charging seat until the transmission frequency reaches the preset frequency, or until the first processor receives the second signal.
Further, when the number of times of transmission reaches a predetermined number of times, the first processor still does not receive the second signal, and the first waveform forming unit stops transmitting the first signal to the charging dock;
and the first processor writes the stop sending event into a flag bit mark of a program until the next time the charging equipment is normally powered on, and the first processor reselects a preset communication protocol according to the current charging state and generates a waveform code.
Furthermore, the wearable device is a watch, and the watch comprises a first charging sheet with a circular ring-shaped metal bottom shell and a second charging sheet with a circular ring-shaped metal bottom shell, which is positioned inside the first charging sheet; the charging seat structural part comprises a charging seat first charging sheet and a charging seat second charging sheet;
when the watch and the charging seat structural part are matched, the first charging piece of the metal bottom shell is in contact with the first charging piece of the charging seat, the second charging piece of the metal bottom shell is in contact with the second charging piece of the charging seat, the first charging piece of the metal bottom shell is not in contact with the second charging piece of the charging seat, and the second charging piece of the metal bottom shell is not in contact with the first charging piece of the charging seat.
Further, the first waveform forming unit comprises a field effect transistor connected with the first processor, the field effect transistor is connected with the second charging sheet, and the voltage transmitted by the second charging sheet can be processed according to the waveform code provided by the first processor to obtain the first signal.
Further, the second waveform forming unit includes a boost chip, and the boost chip can process the voltage provided by the charging port of the charging dock according to the waveform code provided by the second processor to obtain the second signal.
Further, the field effect transistor is an N-channel field effect transistor, and the boost chip is SGM 66052.
Through the technical scheme, firstly, the charging states of the watch and the charging seat are synchronized without adding any auxiliary structure, secondly, the invention creatively utilizes the power supply, the power supply is processed by the field effect transistor to form recognizable waveforms (the first waveform forming unit and the second waveform forming unit), the power supply is used as an energy provider, and is also used as a communication channel, and the communication protocol channel is provided, so that the charging states of the watch and the charging seat are synchronized.
Drawings
Fig. 1 is a charging circuit diagram of the charging stand of the present invention.
Fig. 2 is a charging circuit diagram of the watch of the present invention.
Fig. 3 is a schematic structural diagram of the wristwatch of the present invention.
Fig. 4 is a schematic structural diagram of the charging stand of the present invention.
Fig. 5 is a flowchart of charging device state of charge determination and communication control according to the present invention.
Fig. 6 is a flow chart of control logic and communication control of the charging base charge status indicator light of the present invention.
Fig. 7 is a waveform of a first communication protocol.
Fig. 8 is a waveform of a second communication protocol.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe … … in embodiments of the present invention, these … … should not be limited to these terms. These terms are used only to distinguish … …. For example, the first … … can also be referred to as the second … … and similarly the second … … can also be referred to as the first … … without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The technical scheme of the invention comprises a charging equipment structural part, a charging base structural part, a charging seat control circuit, a charging equipment control circuit, a charging control method and a communication protocol, which are concretely as follows.
As shown in fig. 3, the smart wearable device is preferably a watch, and the watch includes a circular ring-shaped first charging sheet 1 with a metal bottom shell and a circular ring-shaped second charging sheet with a metal bottom shell inside the circular ring of the first charging sheet 1. Preferably, the first charging pad is a negative charging pad, and the second charging pad is a positive charging pad. The watch also comprises a watch case 3, a watch PCBA4, a lithium ion battery 5 and a first single chip microcomputer 6. The first single-chip microcomputer 6 is preferably Apollo 3. A charging circuit is arranged on the watch PCBA.
As shown in fig. 1, the charging circuit of the watch includes a charging management chip U2, a low dropout regulator U3, and the first single chip U5. The positive charging tab TP1 of the charging circuit is the second charging tab (positive electrode), and the negative charging tab TP2 of the charging circuit is the first charging tab (negative electrode). The first circuit of the charging positive plate is connected to a VIN pin of the charging management chip through a first field effect transistor Q1; the second circuit of the charging positive plate is connected with an anti-reverse connection diode D1 after passing through the first field effect transistor Q1, is connected to VIN and EN interfaces of the low dropout linear regulator, and is grounded after passing through an anti-reverse connection diode D1 and being connected with a fifth capacitor in parallel; after voltage is divided by an eighth resistor and a ninth resistor, a third circuit of the charging positive plate is connected with a GPIO4 pin of the first single chip microcomputer through a circuit of the eighth resistor, and a ninth fifth resistor is grounded; a fourth circuit of the charging positive plate is connected with a seventh resistor and a third pin of the second field effect transistor; the charging negative plate is grounded. The CHG pin of the charging management chip is connected with the GPIO2 pin of the first singlechip; the EN pin of the charging management chip is grounded; an IMIN pin of the charging management chip is connected with the fourth resistor and then grounded; an IREF pin of the charging management chip is connected with the fifth resistor and then grounded; and a BAT pin of the charging management chip is connected with a lithium battery B1. A first circuit of a VOUT pin of the low dropout regulator is connected to a VCC pin of the first singlechip to supply power to the first singlechip; and a second line of a VOUT pin of the low dropout regulator is connected to the fourth capacitor and then grounded. After the lithium battery B1 is subjected to voltage division through a nineteenth resistor and a twentieth resistor, the lithium battery B1 is connected to a GPIO5 pin of the first single chip microcomputer through a circuit of the nineteenth resistor, and the twentieth resistor is grounded. A first route of a GPIO3 interface of the first singlechip is connected to a first pin of a second field-effect transistor Q2; a second line of the GPIO3 interface of the first singlechip is connected with a tenth resistor and then is grounded; and the second pin of the second field effect transistor is grounded.
Preferably, the fourth resistor, the tenth resistor and the nineteenth resistor are 1M Ω, the fifth resistor is 150K Ω, the 8 th resistor is 2M Ω, the ninth resistor is 3M Ω, and the twentieth resistor is 390K Ω. And the fourth capacitor and the fifth capacitor are both 10 uF. The charging management chip U2 is SGM40561, the low dropout linear regulator U3 is CE6232B33F, and the first single chip microcomputer U5 is Apollo 3. The first field effect transistor is a P-MOS transistor, and the second field effect transistor is an N-channel field effect transistor.
As shown in fig. 4, the charging seat structure includes a first charging seat sheet 7, a second charging seat sheet 8, a charging base 9, a charging status indicator light 10, a Micro USB 5V charging input interface 11, a charging base PCBA12, a boost chip 13, and a second single chip 14. Preferably, the boost chip 13 is SGM 66052; the second singlechip 14 is an MSP 430; the first charging sheet 7 of the charging seat is a metal charging base negative plate; the second charging sheet 8 of the charging seat is a metal charging base positive plate. When the watch and the charging seat structural part are matched, the first metal bottom shell charging piece 1 is in contact with the first charging piece 7 of the charging seat, the second metal bottom shell charging piece 2 is in contact with the second charging piece 8 of the charging seat, the first metal bottom shell charging piece 1 is not in contact with the second charging piece 8 of the charging seat, and the second metal bottom shell charging piece 2 is not in contact with the first charging piece 7 of the charging seat. The charging base PCBA12 is provided with a charging base charging control circuit.
As shown in fig. 1, the charging dock control circuit structure includes a charging input interface J1, a boost chip U1, a second single chip microcomputer U7, a low dropout regulator U4, and a three-color lamp D2; a first line of a VUSB pin of the charging input interface is connected with a first inductor L1 and then is connected with an LX pin of the boost chip; a second line of the VUSB pin of the charging input interface is connected with an IN pin of the boost chip, and is grounded after being connected with a second capacitor C2 and a third capacitor C3 IN parallel; a third line of the VUSB pin of the charging input interface is connected with a VIN pin and an EN pin of a low dropout linear regulator U4, and is grounded after being connected with a seventh capacitor C7 in parallel; a first line of an EN pin of the boosting chip is connected with a GPIO4 interface of the second single chip microcomputer; a second line of an EN pin of the boosting chip is connected with a sixteenth resistor and then is connected with a VOUT pin of the low dropout regulator U4; the OUT pin of the boost chip outputs voltage and is connected with the first capacitor in parallel and then grounded, the voltage output by the OUT pin of the boost chip is divided by a twelfth resistor and a fifteenth resistor, the voltage is connected with the GPIO pin of the second singlechip through a circuit of the twelfth resistor, and the fifteenth resistor is grounded; a first line of an FB pin of the boost chip is connected with a first resistor R1 and then is merged into an OUT pin output voltage end of the boost chip, and a second line of the FB pin of the boost chip is connected with a third resistor R3 and then is grounded; a first line of a VOUT pin of the low dropout regulator U4 is connected with an EN pin of the boost chip after passing through the sixteenth resistor, a second line of the VOUT pin of the low dropout regulator U4 is connected with a VCC pin of the second singlechip U7, a third line of the VOUT pin of the low dropout regulator U4 is connected with the three-color lamp D2, and a fourth line of the VOUT pin of the low dropout regulator U4 is connected with a sixth capacitor and then grounded; a GPIO1 pin, a GPIO2 pin and a GPIO3 pin of the second singlechip U7 are respectively connected with a red lamp, a blue lamp and a green lamp of the three-color lamp D2; a VCC pin of the second singlechip U7 is connected with a VOUT pin of the low dropout linear regulator U4; after the pin GPIO5 of the second singlechip U7 is divided by a twenty-first resistor and a twenty-second resistor, the pin is connected with a second charging sheet TP3 of a charging seat through a path of the twenty-first resistor, and the twenty-second resistor is grounded; and a GPIO6 pin of the second singlechip U7 is connected with an OUT pin of the boost chip through the twelfth resistor.
Preferably, the input interface that charges is Micro USB 5V input interface that charges, the boost chip is SGM66052, the second singlechip is MSP430, the low dropout linear regulator LDO is CE6232B 33F. The first capacitor and the second capacitor are 22uF, the third capacitor is 1uF, and the sixth capacitor and the seventh capacitor are 10 uF. The first inductance is 1.5 uH. The first resistor is 390K Ω, the third resistor is 110K Ω, the sixteenth resistor is 1.5K Ω, the twelfth resistor and the twenty-first resistor are 1.8M Ω, and the fifteenth resistor and the twenty-second resistor are 2M Ω. The three-color lamp D2 is an LED three-color lamp, and a GPIO1 pin of the singlechip U7 is connected with a fourth field effect transistor and a thirteenth resistor and then connected with a second light emitting diode; a GPIO2 pin of the singlechip U7 is connected with a third field effect transistor and an eleventh resistor and then connected with a fourth light emitting diode; and a GPIO3 pin of the singlechip U7 is connected with the fifth field effect transistor and the fourteenth resistor and then is connected with the first light emitting diode. And the first light emitting diode, the second light emitting diode and the fourth light emitting diode are all connected with a VOUT pin of the low dropout regulator. The eleventh and thirteenth resistances are 470 Ω, and the fourteenth resistance is 1.5K Ω.
Next, the charging process and the charge status indicator lamp display process are described in detail:
an external adapter or other direct current power supply 5V voltage is input from a Micro USB 5V charging input interface of a charging base, a J1 base of the drawing 1 is connected to external 5V voltage, the 5V voltage is input through a PIN4 PIN of a U4 low dropout linear regulator LDO and is reduced to 3.3V to supply power to a first single chip microcomputer U7 and a three-color lamp D2, the 5V input voltage is connected with a PIN2 PIN of a U1 boosting IC, when the 5V voltage is connected, the PIN6 PIN of the U1 boosting IC is connected to a PIN1 voltage output PIN of the U4 through an R16 resistor, the first single chip microcomputer U7 is powered on and defaults to GPIO4 PIN output high level, at the moment, a PIN6 enabling PIN of the U1 is high level, the U1 opens a boosting function, the input 5V voltage is boosted to be output to the 5.5V voltage, and the boosting function of the charging base is achieved. The indicating lamps have three colors to respectively indicate the charging state in the step 3, the blue lamp is in a default non-charging state, the red lamp is in a charging state, and the green lamp is in a full-charging state;
non-charging state bright blue indicator: when a user does not place a charging device on a charging base for charging or the charging device is placed at a non-centered position, so that the charging base and a metal surface of the charging device are not well contacted and can not be normally charged, a blue indicator lamp is turned on by the charging base, a PIN6 PIN of a U1 boosting IC is connected to a PIN1 voltage output PIN of the U4 through an R16 resistor when a 5V voltage is connected, the U7 of the first single chip microcomputer is powered on and defaults that a GPIO4 PIN outputs a high level, a PIN6 enabling PIN of the U1 is a high level, a U1 opens a boosting function, the input 5V voltage is boosted to be 5.5V voltage for outputting, the boosting function of the charging base is realized, if a watch is not placed above the charging base, namely the charging base and the charging device are not contacted and are not communicated, the 5.5V output voltage enters through a 6 PIN of the U3 after being subjected to voltage division through R12 and R15, the U3 recognizes 6 PIN as a high level, and judges that the charging base is in a non-charging state conversion state, a GPIO2 of U7 outputs high level to drive Q3, Q3 is an N-channel field effect transistor, Q3 is conducted, a three-color D2 lamp is connected with VCC voltage in a positive mode, a blue lamp of D2 is connected with a current-limiting resistor R11 and is conducted to the ground through Q3, a blue lamp of D2 is conducted, a blue lamp is lighted at the bottom of charging, GPIO1 and GPIO3 of U7 are low level, at the moment, Q4 and Q5 are in an off state, a green lamp and a red lamp of D2 are turned off, and a user can see that a charging base is lighted by a blue indicator lamp to indicate that no charging equipment is detected;
charging status bright red indicator light: when the charging seat normally exported 5.5V voltage, charging device was placed like intelligent wrist-watch and normally charged to the charging base top, and the base bright red pilot lamp that charges this moment indicates that equipment is charging. When the 5V voltage is connected, a PIN6 PIN of a U1 boosting IC is connected to a PIN1 voltage output PIN of a U4 through an R16 resistor, a first singlechip U7 is powered on and defaults that a GPIO4 PIN outputs high level, at the moment, a PIN6 enabling PIN of a U1 is high level, a U1 starts a boosting function, the input 5V voltage is boosted to 5.5V voltage for output, and the boosting function of a charging seat is realized, at the moment, if a watch is normally placed and charged above the charging seat, a 7 metal charging base negative plate of a charging base shown IN figure 4 is IN contact with a1 metal watch bottom case charging negative plate shown IN figure 3, the 1 metal watch bottom case charging negative plate shown IN figure 3 is connected with a GND network of TP2 shown IN figure 2, an 8 metal charging base positive plate of the charging base shown IN figure 4 is IN contact with a 2 metal watch bottom case charging positive plate shown IN figure 3, the 2 metal watch bottom case charging positive plate shown IN figure 3 is connected with a 5.5V-IN network of 1 shown IN figure 2, the charging device and the charging base are physically contacted through respective metal sheets, the charging device is input with 5.5V voltage boosted and output by the charging base at the moment, TP3 of figure 1 represents the positive plate of the 8-metal charging base of figure 4, when the charging equipment is pressed on the charging base, the metal charging base positive plate is naturally pressed down through physical gravity, the output 5.5V enters the GPIO5 pin of U7 after being subjected to voltage division by R21 and R22, the U7 is identified as high level to indicate that the charging equipment is marked by software above the charging base, as shown in the figure 2, 5.5V input of charging equipment TP1 enters a PIN1 PIN of a charging management chip U2 through a Q1 reverse-connection-prevention P-MOS field effect transistor, a PIN8 PIN of the U2 is connected with a lithium ion battery B1 for charging, and 5.5V voltage is connected with a step-down and reverse-connection-prevention diode D1 through a P-MOS transistor Q1 and is reduced to 3.3V by a U3 low-dropout linear voltage regulator to supply power to a main control U5 model Apollo 3. 5.5V enters a GPIO4 pin of U5 after being divided by Q1, R8 and R9, U5 is identified as high level to indicate that the charging base is connected at the moment and is being charged, B1 lithium ion battery enters a GPIO5 pin of U5 after being divided by R19 and R20 to detect the voltage value of ADC, if the voltage is in a preset charging voltage range, a preset coding mode is called according to a communication protocol set in U5 and with the charging base to generate a driving waveform, GPIO 9 of U5 outputs the driving waveform to be connected to a1 pin of a Q2 field effect tube, 5.5V is connected to the ground through R7 and Q2, the driving waveform of U5 drives Q2 to be switched, R7 is continuously switched to the ground through the driving waveform of Q2 and the current to the ground exceeds the limit protection current of the charging base, the 5.5V output voltage of the charging base is synchronously changed with the driving waveform of U5, and the 5.5V of the charging base enters the U5 pin of the U5 after being divided by R5 and R5, the GPIO6 pin of U7 is set as an input state identification voltage to identify the voltage change and identify, at this time, the waveform received by U7 is consistent with the driving waveform generated by U5, U7 identifies the charging state, U7 generates a preset feedback charging state coding waveform, the feedback charging state waveform is connected to the 6 pin control U1 of U1 through the GPIO4 pin of U7 to control U1 to output 5.5V voltage according to the feedback driving waveform, the GPIO1 pin of U7 outputs high level to drive Q4, at this time, the red LED lamp of D2 is turned on, the charging indicator lamp displays red, the GPIO4 of U7 is in default state to output high level, U1 continuously outputs 5.5V voltage, the charging device receives the feedback driving waveform voltage and enters the GPIO4 pin of U5 through R8 and R9, if the U5 receives and identifies the charging feedback signal, U5 stops outputting the charging driving waveform, at this time, if the charging feedback signal is not received by U5, the charging driving signal is continuously and repeatedly sends the charging driving signal, and stopping sending the charging signal and writing the flag bit mark of the program when the feedback signal is not received for the preset times, starting charging judgment communication when the charging equipment is charged normally for the next time, and finishing the mutual communication of the red indicator lamp under the charging state by the charging base and the charging equipment.
Fully charged and green indicator lamp state: TP3 of figure 1 shows the 8-metal charging base positive plate of figure 4, when a charging device is pressed on the charging base, the metal charging base positive plate is naturally pressed down through physical gravity, the output 5.5V is divided by R21 and R22 and then enters a GPIO5 pin of U7, U7 recognizes that high level indicates that the charging device is marked on the charging base by software, when the charging device is correctly placed on the charging base and is normally charged, the voltage of a B1 lithium ion battery is divided by R19 and R20 and then enters an ADC pin of the GPIO5 of U5, U5 judges the voltage of the B1, when the voltage of the B1 exceeds a preset GPIO threshold value, U5 recognizes a full power state, at the moment, the U5 produces a corresponding driving waveform according to the preset full power state, the U3 pin of U5 outputs the driving waveform of the full power state to drive Q2 to switch, 5.5.5V is connected to the ground through R7 and Q2, at the driving waveform of U68628 to switch Q599, the R7 is continuously switched to the ground through a driving waveform of Q2, the current to the ground exceeds the limit protection current of the charging base, the 5.5V output voltage of the charging base synchronously changes with the high and low voltages of the driving waveform of U5, the 5.5V of the charging base enters a GPIO6 pin of U7 after being divided by R17 and R18, the GPIO6 pin of U7 is set as an input state to identify the voltage high and low changes and identify, the waveform received by U7 is consistent with the driving waveform generated by U5 at the moment, U7 identifies a full power state, U7 generates a preset feedback full power state coding waveform, the feedback charging state waveform is connected to a 6 pin control U1 of U1 through the GPIO4 pin of U7 to output 5.5V voltage according to the feedback driving waveform, if the U5 receives and identifies a full power feedback signal, the U5 stops outputting the full power driving signal, if the U5 does not receive the full power feedback signal at the moment, the full power driving signal is continuously sent, and stopping sending the full electric signal and writing the flag bit mark of the program when the feedback signal is not received for the preset times, and starting full electric judgment communication when the charging equipment is normally charged next time. The GPIO3 pin of U7 output high level drive Q5, and the green LED lamp of D2 is opened this moment, and the pilot lamp that charges shows green, and GPIO4 of U7 is in the output low level, and the U1 switch is cut off the output 5.5V voltage, and the base of charging does not have the voltage output this moment, and the base of charging and the communication of bright green pilot lamp under the full charge state are accomplished to the charging equipment.
The logic judgment program flow chart of the charging equipment comprises the following steps: fig. 5 is a flowchart showing charging device charging state judgment and communication control, and fig. 6 is a flowchart showing charging base charging state indicator light control logic and communication control.
The communication protocol between the charging device and the charging base is two communication protocols shown in fig. 7 and fig. 8, wherein fig. 7 is used for performing handshaking communication according to continuous high-low level alternate change with equal time, fig. 8 is used for performing handshaking communication according to continuous high-low level waveform number with fixed time length, when no device is charged or charging is abnormal, the handshaking communication cannot be realized, and the charging base is provided with a bright blue indicator light to indicate that the device is in a standby state without charging.
FIG. 7 shows a first communication protocol, when the charging device sends a waveform as shown in FIG. 7, the charging dock receives a waveform of the communication protocol, T1 and T2 of the square wave are equal, the charging device and the charging base pre-reserve a designed handshaking communication protocol, such as the charging base receives 5 high levels and 5 low levels which are alternately changed continuously, and the time T1= T2=20ms, which can be set as any other appointed time and can be identified as a charging signal, when the charging base identifies that the charging device is charging normally, the charging base sends the same waveform, when the charging device is in a receiving identification waveform transition state, identifies that the charging base feeds back the charging normal signal, the charging device stops sending the charging signal, if the charging device does not receive the charging signal fed back by the charging base after sending the charging signal, and the charging equipment sends the same charging waveform signal again, if the charging equipment cannot receive the feedback signal after sending for multiple times, the charging equipment stops sending the charging signal, and the charging equipment and the charging base finish charging handshake communication. Similarly, when the charging base receives 7 continuous high levels and 7 continuous low levels which are changed alternately and time T1= T2=20ms, the charging base recognizes a full electric signal, at this time, the charging base is lighted by a green indicator light to indicate that the device is fully charged, the charging base sends a feedback square wave to the charging device, the feedback square wave is the same as the feedback square wave in the continuous 7 high levels and 7 low levels which are changed alternately and are changed for T1= T2=20ms, the charging device recognizes the full electric feedback signal and stops sending the full electric notification signal continuously, if the charging device does not receive the full electric signal fed back by the charging base after sending the charging signal, the charging device sends the same full electric waveform signal again, if the feedback signal cannot be received by multiple times, the full electric signal stops being sent, and full electric handshake communication between the charging device and the charging base is completed. The handshaking communication protocol between the charging equipment and the charging base realizes no charging, charging and full-power state T1 and T2, the number of high and low levels can be set arbitrarily, and the handshaking communication can be completed only by keeping the same communication protocol between the charging base and the charging equipment.
As shown in fig. 8, for a second communication protocol, when the charging device emits a waveform as shown in fig. 8, the charging base recognizes that when the fixed time duration T3=50ms, T4=10ms and the continuous waveform of 5 high levels and 5 low levels alternating, the charging base recognizes that the device is charging, and the charging device lights up the red indicator light to indicate that the device is charging, and the charging base sends the same waveform, at this time, the charging equipment is in a receiving identification waveform conversion state, when the waveform is recognized, the charging base is recognized to feed back a charging normal signal, the charging equipment stops sending the charging signal, if the charging equipment does not receive the charging signal fed back by the charging base after sending the charging signal, the charging equipment sends the same charging waveform signal again, and if the feedback signal cannot be received after multiple transmissions, the charging signal is stopped being transmitted, and the charging equipment and the charging base are charged and handshake communication is completed. When the charging device sends out waveforms which are fixed in time length T3=70ms, T4=10ms and are continuous and alternate between 5 high levels and 5 low levels, the charging base recognizes that the device is fully charged, the charging device is powered on by a green indicator light at the moment, the charging base sends the same waveforms, the charging device is in a state of receiving and recognizing the waveforms, the charging base recognizes that the full-charge signals are fed back by the charging device when the waveforms are recognized, the charging device stops sending the full-charge signals, if the charging device does not receive the full-charge signals fed back by the charging base after sending the full-charge signals, the charging device sends the same full-charge waveform signals again, if the full-charge signals cannot be received by the charging device after multiple times of sending, the full-charge signals are stopped, and full-charge handshake communication between the charging device and the charging base is completed.
Through the technical scheme, firstly, the charging states of the watch and the charging seat are synchronized without adding any auxiliary structure, secondly, the power supply is used as an energy provider and is also used as a communication channel, and the channel of a communication protocol is provided, so that the charging states of the watch and the charging seat are synchronized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A system capable of realizing charging signal synchronization comprises a wearable device and a charging seat,
the wearable device comprises a charging port, a first processor and a first waveform forming unit;
the charging port and the first processor are connected with a first waveform forming unit;
the first processor is preset with a communication protocol, and the communication protocol at least comprises:
the wearable device is in a first waveform adaptation communication during charging, and a second waveform adaptation communication during full power state of the wearable device;
the first processor can select a preset communication protocol according to the current charging state and generate a waveform code, and the first waveform forming unit processes the voltage input to the first waveform forming unit according to the waveform code to form a first signal;
the charging stand can be in contact with the charging port, so that the charging stand and the wearable device are connected;
the charging seat comprises a second processor, a second waveform forming unit and a charging indicator light, and the first signal is transmitted to the second processor through the connected connecting part;
the second processor is also preset with the communication protocol, the second processor judges the first signal, and the charging indicator lamp indicates according to the judgment result; meanwhile, the second processor selects a preset communication protocol according to the first signal and generates a waveform code, and a second waveform forming unit on the charging seat forms a second signal for the voltage input to the second waveform forming unit according to the waveform code;
the second signal is transmitted to the first processor through the connected connection;
the first processor controls whether the first waveform forming unit continues to form the first signal according to the second signal, specifically:
when the wearable device is in a charging state of charging, the first signal and the second signal are both first waveforms, and first waveform adaptation communication is achieved;
if the first processor receives and recognizes the second signal, stopping generating the waveform code;
if the second signal is not received within the time threshold value after the first processor generates the waveform code, the first waveform forming unit continuously sends the first signal to the charging seat until the sending times reach the preset times or until the first processor receives the second signal;
when the number of sending times reaches the preset number, the first processor still does not receive the second signal, and the first waveform forming unit stops sending the first signal to the charging seat;
the first processor writes the stop sending event into a flag bit mark of a program until the next time the wearable device is normally powered on, the first processor selects a preset communication protocol again according to the current charging state and generates a waveform code;
when the wearable device is in a fully charged charging state, the first signal and the second signal are both in a second waveform, and second waveform adaptive communication is achieved; if the first processor receives and recognizes the second signal, stopping generating the waveform code;
if the second signal is not received within the time threshold value after the first processor generates the waveform code, the first waveform forming unit continuously sends the first signal to the charging seat until the sending times reach the preset times or until the first processor receives the second signal;
when the number of sending times reaches the preset number, the first processor still does not receive the second signal, and the first waveform forming unit stops sending the first signal to the charging seat;
and the first processor marks the flag bit of the stop sending event writing program until the next time the wearable device is normally powered on, the first processor selects a preset communication protocol again according to the current charging state and generates a waveform code.
2. The system of claim 1, wherein the wearable device is a watch including a circular ring-shaped metal bottom case first charging tab and a circular ring-shaped metal bottom case second charging tab located inside the first charging tab ring; the structural part of the charging seat comprises a first charging piece of the charging seat and a second charging piece of the charging seat;
when the watch and the structural member of the charging seat are matched, the first charging piece of the metal bottom shell is contacted with the first charging piece of the charging seat, the second charging piece of the metal bottom shell is contacted with the second charging piece of the charging seat, the first charging piece of the metal bottom shell is not contacted with the second charging piece of the charging seat, and the second charging piece of the metal bottom shell is not contacted with the first charging piece of the charging seat.
3. The system of claim 2, wherein the first waveform forming unit comprises a fet connected to the first processor, the fet being connected to the second charging pad, the first signal being obtained by processing a voltage delivered by the second charging pad in accordance with a waveform code provided by the first processor.
4. The system of claim 3, wherein the second waveform forming unit comprises a boost chip, and the boost chip processes the voltage provided by the charging port of the charging cradle according to the waveform code provided by the second processor to obtain the second signal.
5. The system of claim 4, wherein the FET is an N-channel FET and the boost chip is SGM 66052.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144955.3A CN110867919B (en) | 2019-11-21 | 2019-11-21 | System capable of realizing synchronization of charging signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144955.3A CN110867919B (en) | 2019-11-21 | 2019-11-21 | System capable of realizing synchronization of charging signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110867919A CN110867919A (en) | 2020-03-06 |
| CN110867919B true CN110867919B (en) | 2022-03-25 |
Family
ID=69655137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911144955.3A Active CN110867919B (en) | 2019-11-21 | 2019-11-21 | System capable of realizing synchronization of charging signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110867919B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676174B (en) * | 2021-08-07 | 2022-06-10 | 东莞市海能电子有限公司 | Circuit, method and equipment for processing BMC (baseboard management controller) coded data of USB-PD (Universal Serial bus-PD) protocol |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111128A (en) * | 2009-12-23 | 2011-06-29 | 美格纳半导体有限会社 | Waveform generation circuit |
| EP2990256A1 (en) * | 2014-09-01 | 2016-03-02 | LSIS Co., Ltd. | Vehicle charging device and method |
| WO2016100919A1 (en) * | 2014-12-19 | 2016-06-23 | California Institute Of Technology | Improved systems and methods for management and monitoring of energy storage and distribution |
| CN206283649U (en) * | 2016-12-26 | 2017-06-27 | 东莞市库珀电子有限公司 | Bluetooth earphone and cradle that a kind of point contact type charges |
| CN109075592A (en) * | 2016-12-05 | 2018-12-21 | 三星Sdi株式会社 | Battery pack charging system |
-
2019
- 2019-11-21 CN CN201911144955.3A patent/CN110867919B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111128A (en) * | 2009-12-23 | 2011-06-29 | 美格纳半导体有限会社 | Waveform generation circuit |
| EP2990256A1 (en) * | 2014-09-01 | 2016-03-02 | LSIS Co., Ltd. | Vehicle charging device and method |
| WO2016100919A1 (en) * | 2014-12-19 | 2016-06-23 | California Institute Of Technology | Improved systems and methods for management and monitoring of energy storage and distribution |
| CN109075592A (en) * | 2016-12-05 | 2018-12-21 | 三星Sdi株式会社 | Battery pack charging system |
| CN206283649U (en) * | 2016-12-26 | 2017-06-27 | 东莞市库珀电子有限公司 | Bluetooth earphone and cradle that a kind of point contact type charges |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110867919A (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10903695B2 (en) | Power reception device and power reception method for non-contact power transmission | |
| US8810072B2 (en) | High-power induction-type power supply system and its data transmission method | |
| JP6701623B2 (en) | Control device, electronic device and non-contact power transmission system | |
| CN104934819B (en) | Multifunctional socket | |
| US20080200119A1 (en) | Power reception control device, power transmission control device, non-contact power transmission system, power reception device, power transmission device, and electronic instrument | |
| CN111919349B (en) | Intelligent charging USB deconcentrator | |
| JPH088747B2 (en) | Multiple Battery Multiple Speed Battery Charger | |
| JP2010016985A (en) | Method of data transmission in electric power transmission, and charging stand and battery built-in device using the method | |
| CN104094512B (en) | Power supplies | |
| CN104079038A (en) | Bluetooth portable power source, implementation method and mobile terminal system | |
| CN110867919B (en) | System capable of realizing synchronization of charging signals | |
| US20240128803A1 (en) | Control device, power receiving device, electronic apparatus, and power transmission system | |
| CN110867068B (en) | Contact charging control method for wearable equipment | |
| CN104319564A (en) | Lightning charging data line capable of displaying charging state | |
| EP1315977B1 (en) | Electronic apparatus and control method | |
| CN211320953U (en) | Charging circuit and charging seat of watch charging seat | |
| CN209184263U (en) | A kind of induction charging stake | |
| CN208432871U (en) | A kind of smartwatch | |
| CN201029207Y (en) | Wireless-transmitting lithium battery charger | |
| CN204179397U (en) | A kind of Lightning charging data line showing charged state | |
| CN208971179U (en) | Portable type power supply unit | |
| CN108879890A (en) | A kind of induction charging stake | |
| CN214590786U (en) | Wireless charging control circuit | |
| CN210927201U (en) | Charger and charging system based on WiFi network control | |
| CN217563347U (en) | Wireless charging circuit with storage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210621 Address after: 510000 6 jiahuiyuan, Xintang New World garden, Zengcheng District, Guangzhou City, Guangdong Province Applicant after: Yu Xiyun Address before: Room 235, No. 333, jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Guangzhou, Guangdong 510000 Applicant before: GUANGDONG LEMOVT INTELLIGENT TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220309 Address after: 518110 102, No. 67, Xikeng Road, Xikeng community, Fucheng street, Longhua District, Shenzhen, Guangdong Province Applicant after: Shenzhen ruixinzhi Technology Co.,Ltd. Address before: 510000 6 jiahuiyuan, Xintang New World garden, Zengcheng District, Guangzhou City, Guangdong Province Applicant before: Yu Xiyun |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |