CN212034108U - Module framework integrating wireless power supply and signal interaction and sensor - Google Patents
Module framework integrating wireless power supply and signal interaction and sensor Download PDFInfo
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Abstract
The utility model relates to a collection wireless power supply and signal interaction's modular framework and sensor, include: a first module and a second module; the module comprises an integrated circuit which is coupled with the same PCB board by adopting an energy charging circuit and a signal interaction circuit; each module comprises a PCB coil; the first module includes: the interface is used for accessing electric energy and interactive signals; the first modulation unit generates a carrier, modulates a control signal and the carrier and then sends the modulated control signal and the carrier to the module PCB coil; a first frequency divider that generates a clock signal of a control signal based on a signal on a carrier; the signal processing unit processes the control signal and the feedback signal; the second module includes: the electric energy processing unit is used for converting carrier electric energy and supplying the carrier electric energy to the response equipment; a second modulation unit separating a control signal on a carrier; a second frequency divider for generating and distributing an acquisition clock signal; the operational amplifier circuit unit is used for performing interaction between the control signal and the clock signal and receiving a feedback signal; and the third modulation unit modulates the feedback signal and sends the feedback signal to the module PCB coil.
Description
Technical Field
The invention relates to the technical field of wireless charging and communication, in particular to a module architecture integrating wireless power supply and signal interaction and application.
Background
The wireless charging technology is derived from a wireless power transmission technology and can be divided into a low-power wireless charging mode and a high-power wireless charging mode. The low-power wireless charging usually adopts an electromagnetic induction type, and the high-power wireless charging usually adopts a resonance type, and energy is transmitted to a power utilization device by power supply equipment. However, in either way, only a single energy conversion and transfer can be achieved at present.
Specifically, the conventional low-power wireless charging adopts a wireless charging module, needs a coupling coil with a large volume, and is only used for charging. If a communication function needs to be added, a separate transceiving control module controlled by a circuit needs to be arranged, so that the charging module needs to have a larger volume, and further, the power consumption is large, and the module cannot be integrated in a miniaturized device for use.
If a single communication module is arranged, the existing wireless data transmission needs a special module for communication, and the program control is needed, so that the transceiving cost is high and the implementation mode is complex. At present, the market adopts various functional modules to be stacked, the analog signal acquisition of the weak signal of the small signal is controlled by the MCU to transmit data through the wireless transmitting module, and the power supply is realized through the wireless charging module. In the whole small signal acquisition process, the digital interference of various modules is very easy to be caused, and the signal quality is greatly influenced.
Disclosure of Invention
The technical scheme provided by the invention is a module architecture and application integrating wireless power supply and signal interaction, solves the problem of combination of a traditional wireless charging module and a wireless communication module, and particularly solves the problem of integrating two functional modules on the same PCB for control and feedback.
The technical scheme of the invention is as follows: the module framework integrating wireless power supply and signal interaction comprises two modules matched with each other: a first module and a second module.
The first module has a power transmission function and a signal transmitting/receiving function, and the corresponding second module has a power receiving function and a signal receiving/transmitting function.
Each module adopts an energy charging circuit and a signal interaction circuit to be coupled with an integrated circuit of the same PCB, when the integrated circuit is arranged, the integrated circuit can be used as a PCB coil, and the two modules are subjected to energy coupling through respective integrated circuits. Thus, the same antenna is used for transmission and power in each module, while avoiding conventional wound coils or separate coil structures. The accumulation of the modules is reduced, the board-level interference is reduced to the maximum extent, and the small-signal acquisition is more suitable.
Specifically, the first module mainly includes: power and signal interface, carrier clock crystal oscillator, buffer, frequency divider, comparator, filter, wave detector, PCB coil, etc.
The power supply and signal interface can be connected with an interface of an external main control board in a butt joint mode and is used for providing power supply and signals for the first module.
Power transmission-wireless transmission line:
the high-frequency crystal oscillator circuit, namely the first modulation unit, is composed of a carrier clock crystal oscillator, a buffer and the like, electric energy forms oscillation waves through the clock crystal oscillator, and signals can be modulated on carriers.
The high-frequency crystal oscillator circuit couples the modulated electric wave to the second module through a PCB coil to realize module output.
Signal transmission-wireless transmission line:
generally, the signals include a control clock signal CTL _ CLK, a synchronization signal.
The synchronous signal is a signal transmitted by a transmitting end of the trigger response equipment, enters a buffer for buffering after passing through a signal processing unit consisting of a comparator, a filter and a detector, and is modulated onto a carrier wave after the clock crystal oscillator forms the carrier wave (oscillation wave).
The high-frequency crystal oscillator circuit couples the modulated electric wave to the second module through a PCB coil to realize module output.
The control clock signal CTL _ CLK is a clock signal CLK (feedback clock signal) for controlling the number of pulses in the output period of the frequency divider generation module, and the CLK is fed back to the external main control board through the interface. Wherein the frequency divider is a first frequency divider.
Signal transmission-line of feedback reception:
the PCB coil is coupled to a feedback signal transmitted by the second module, and the feedback signal reaches an interface after passing through a signal processing unit consisting of a comparator, a filter and a detector and is fed back to an external main control board through the interface.
Specifically, the second module mainly includes: the circuit comprises a filter, a rectifier, a voltage stabilizer, a detector, a comparator, a pulse width modulator, a carrier frequency divider, an ADC, an operational amplifier circuit, a data modulator, a PCB coil and the like.
Wherein the ADC (analog to digital conversion circuit) and the operational amplifier circuit constitute an acquisition circuit directly associated with the response device. The response equipment obtains a control signal from the ADC + operational amplifier circuit and simultaneously transmits a feedback signal after work to the second module.
Power transmission-wireless transmission line:
the electric wave carrying the control signal transmitted by the first module can be received by the coupling between the antennae.
The PCB coil is connected to an electric energy processing unit consisting of a filter, a rectifier and a voltage stabilizer, and supplies power to the second module and the response device through linear voltage stabilization.
Signal transmission-line of feedback reception:
meanwhile, the PCB coil is connected to a second modulation unit consisting of a wave detector, a comparator and a pulse width modulator. The control signal obtained by antenna coupling is demodulated and compared to obtain a signal TRIGGER, and the TRIGGER signal is simultaneously subjected to wave stabilization and pulse width modulation and then respectively sent to the ADC + operational amplifier circuit and the carrier frequency divider.
The carrier frequency divider, that is, the second frequency divider generates the number of clocks in the module period after acquiring the control signal received by the coil of the PCB and the TRIGGER signal after pulse width modulation, and generates a clock signal SCLK (clock signal for acquisition) required by the response device.
Signal transmission-wireless transmission line:
the response equipment generates response action after obtaining the control signal and the clock signal SCLK, and generates a feedback signal by the response action. The feedback signal is collected by the ADC and the operational amplifier circuit, enters a PCB coil after passing through the data modulator, and is sent to the first module according to the antenna coupling relation.
And the first module sends a feedback signal to the external main control board according to the signal transmission-feedback receiving line.
According to the technical system scheme, the invention also provides the application of the dynamic torque sensor, namely the system can be widely adapted to the sensor.
Corresponding to two modules of this system, the sensor can be divided into two and constitute, is provided with the sensor body of second module promptly (the second module also can integrate in the sensor body), and with the cooperation part of sensor body to the adaptation, first module can set up on the cooperation part or integrate in the cooperation part.
Specifically, the first module and the second module on the sensor body and the matching component have all the characteristics of the system:
the first module and the second module respectively comprise an integrated circuit which is coupled to the same PCB board by adopting an energy charging circuit and a signal interaction circuit; each module comprises a PCB coil;
the first module includes:
the interface can be butted with an external main control board and is used for accessing electric energy and bidirectional interaction signals in a unidirectional mode;
the first modulation unit generates a carrier wave through a clock crystal oscillator, stores a control signal through a buffer, and modulates and transmits the control signal and the carrier wave to the module PCB coil;
a first frequency divider that generates a clock signal for feedback corresponding to the control signal based on a signal on a carrier;
the signal processing unit is used for processing the control signal and the feedback signal received by the module PCB coil;
the second module includes:
the electric energy processing unit is used for converting the carrier electric energy received by the module PCB coil and supplying the carrier electric energy to the response equipment;
the second modulation unit is used for stably separating the control signals on the carrier wave;
a second frequency divider generating and distributing an acquisition clock signal based on the separated control signal;
the operational amplifier circuit unit is used for interacting a control signal and a clock signal for acquisition with the response equipment and receiving a feedback signal of the response equipment;
and the third modulation unit is used for modulating a feedback signal and sending the feedback signal to the module PCB coil.
Furthermore, according to the application principle, the invention also protects the application of the dynamic torque sensor.
Specifically, the device comprises a PCB bottom plate which is detachably sleeved on the rotating shaft. The PCB bottom plate includes: the transmitting plate and the receiving plate are matched.
A first module for outputting electric energy and control signals and receiving feedback signals is integrated on the transmitting plate, and a second module for receiving electric energy and control signals and outputting feedback signals is integrated on the receiving plate. The two modules are both coupled to an integrated circuit of the same PCB board by adopting an energy charging circuit and a signal interaction circuit; each integrated circuit can be used as a PCB coil at the same time;
the first module includes:
the interface can be butted with an external main control board and is used for accessing electric energy and bidirectional interaction signals in a unidirectional mode;
the first modulation unit generates a carrier wave through a clock crystal oscillator, increases a control signal through a buffer, modulates the control signal and the carrier wave and then sends the modulated control signal and the modulated carrier wave to the module PCB coil;
the first frequency divider generates a clock signal for feedback through the control signal based on the control signal on the carrier wave and feeds the clock signal back to an interface of the external main control board;
the signal processing unit is used for processing the control signal and the feedback signal received by the module PCB coil;
the second module includes:
the electric energy processing unit is used for converting the carrier electric energy received by the module PCB coil and supplying the carrier electric energy to the response equipment;
the second modulation unit is used for stably separating the control signals on the carrier wave;
a second frequency divider generating and distributing an acquisition clock signal based on the separated control signal;
the operational amplifier circuit unit is used for interacting a control signal and a clock signal for acquisition with the response equipment and receiving a feedback signal of the response equipment;
and the third modulation unit is used for modulating the feedback signal and sending the feedback signal to the module PCB coil.
The invention has the advantages that:
1. the charging and data transmission are carried out in a two-wire PCB wiring antenna coupling mode, the size is small, and the power consumption is low; the device is convenient to be integrated in miniaturized equipment for use.
2. And modulating the data by the charged high-frequency signal, and directly coupling the data to a receiving board through high frequency to realize filtering and detection of the data and obtain the data. The advantages are no need of complex single-chip computer and wireless transmitting module for control transmission. The transmission of wireless data is realized directly through the logic circuit. The cost, the power consumption and the volume are greatly reduced.
3. Because the accumulation of the modules is reduced, the interference of the board level is reduced to the maximum extent, and the method is more suitable for the acquisition of small signals.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the modular architecture of the present invention;
FIG. 2 is a circuit layout diagram of power and signal transmission in the transmit module;
fig. 3 is a circuit arrangement diagram for signal reception in the transmission module.
FIG. 4 is a circuit layout diagram for power and signal reception in the receiver module;
fig. 5 is a circuit arrangement diagram of signal transmission in the receiving module;
FIG. 6 is a pcb board with integrated transmitter module;
FIG. 7 is a pcb board with integrated receiving module;
the various references in the drawings are: 1. a transmitting module; 2. a receiving module; 3. a power and signal interface; 4. a first frequency divider; 5. a buffer and a carrier circuit; 6. a demodulation device; 7. a wave stabilizing pulse width modulator; 8. a processing device; 9. a second frequency divider; 10. and a modulation module.
Detailed Description
Example 1:
the transmitting module 1, i.e. the first module, is shown in fig. 2 and 3.
1. The transmitting module is supplied with power through the power supply and signal interface 3, and simultaneously: control clock signal CTL _ CLK, synchronous signal
U3, U2 and Y1 form a high-frequency crystal oscillator circuit, generate a carrier signal to be supplied to a first frequency divider 4 (U5), and simultaneously drive a buffer and a carrier circuit 5 through U6 and U7 to be coupled to a receiving board through a coil to supply power to the receiving board.
3. The first frequency divider 4 (U5) is controlled to output the pulse count clock CLK in the cycle by controlling the clock signal CTL _ CLK; the clock signal is fed back to the MCU through the interface.
4. The synchronization signal controls the data signal coupled by the antenna through U4 and U8.
5. The DATA signal coupled by the antenna is demodulated by demodulation equipment 6 such as devices such as detection (D2, D3, and the like), filtering (pi-type filtering), comparison (U1), and the like to obtain a signal DATA required by the MCU.
The receiving module 2, i.e. the second module, is shown in fig. 4 and 5.
1. The antenna is coupled to obtain a signal, and the signal is filtered (devices such as C9 and C8), rectified (D1, D2, D3 and D4), regulated by LDO (devices such as U3) and the like to obtain a power supply VCC which supplies power to the receiving module.
2. The antenna coupling obtains signals, the signals are subjected to detection (devices such as D5 and D6) and comparison (devices such as U8) to obtain a TRIGGER signal, and the TRIGGER signal is simultaneously supplied to the acquisition circuit to control acquisition and starting.
3. The TRIGGER signal is subjected to a wave-stabilizing pulse width modulator 7 to produce an adjustable pulse width so as to control the number of clocks in the production period of the second frequency divider 9 (U1) and produce and acquire a required clock signal SCLK.
4. The acquisition modules (U12, U13 and U11) acquire the DATA DATA of the acquisition modules under the action of the TRIGGER control signal and the SCLK clock signal.
5. The data passes through the modulation module 10(U4, U5, U2) with a coil coupled to the transmit module.
Example 2:
the application of the dynamic torque sensor specifically comprises a PCB bottom plate which is detachably sleeved on a rotating shaft. The PCB bottom plate includes: the transmitting plate and the receiving plate are matched.
A first module for outputting electric energy and control signals and receiving feedback signals is integrated on the transmitting plate, and a second module for receiving electric energy and control signals and outputting feedback signals is integrated on the receiving plate. The two modules are both coupled to an integrated circuit of the same PCB board by adopting an energy charging circuit and a signal interaction circuit; each integrated circuit can be used as a PCB coil at the same time;
the first module mainly comprises: power and signal interface, carrier clock crystal oscillator, buffer, frequency divider, comparator, filter, wave detector, PCB coil, etc.
The power supply and signal interface can be connected with an interface of an external main control board in a butt joint mode and is used for providing power supply and signals for the first module.
Power transmission-wireless transmission line:
the high-frequency crystal oscillator circuit, namely the first modulation unit, is composed of a carrier clock crystal oscillator, a buffer and the like, electric energy forms oscillation waves through the clock crystal oscillator, and signals can be modulated on carriers.
The high-frequency crystal oscillator circuit couples the modulated electric wave to the second module through a PCB coil to realize module output.
Signal transmission-wireless transmission line:
generally, the signals include a control clock signal CTL _ CLK, a synchronization signal.
The synchronous signal is a signal transmitted by a transmitting end of the trigger response equipment, enters a buffer for buffering after passing through a signal processing unit consisting of a comparator, a filter and a detector, and is modulated onto a carrier wave after the clock crystal oscillator forms the carrier wave (oscillation wave).
The high-frequency crystal oscillator circuit couples the modulated electric wave to the second module through a PCB coil to realize module output.
The control clock signal CTL _ CLK is a clock signal CLK (feedback clock signal) for controlling the number of pulses in the output period of the frequency divider generation module, and the CLK is fed back to the external main control board through the interface. Wherein the frequency divider is a first frequency divider.
Signal transmission-line of feedback reception:
the PCB coil is coupled to a feedback signal transmitted by the second module, and the feedback signal reaches an interface after passing through a signal processing unit consisting of a comparator, a filter and a detector and is fed back to an external main control board through the interface.
The second module mainly comprises: the circuit comprises a filter, a rectifier, a voltage stabilizer, a detector, a comparator, a pulse width modulator, a carrier frequency divider, an ADC, an operational amplifier circuit, a data modulator, a PCB coil and the like.
Wherein the ADC (analog to digital conversion circuit) and the operational amplifier circuit constitute an acquisition circuit directly associated with the response device. The response equipment obtains a control signal from the ADC + operational amplifier circuit and simultaneously transmits a feedback signal after work to the second module.
Power transmission-wireless transmission line:
the electric wave carrying the control signal transmitted by the first module can be received by the coupling between the antennae.
The PCB coil is connected to an electric energy processing unit consisting of a filter, a rectifier and a voltage stabilizer, and supplies power to the second module and the response device through linear voltage stabilization.
Signal transmission-line of feedback reception:
meanwhile, the PCB coil is connected to a second modulation unit consisting of a wave detector, a comparator and a pulse width modulator. The control signal obtained by antenna coupling is demodulated and compared to obtain a signal TRIGGER, and the TRIGGER signal is simultaneously subjected to wave stabilization and pulse width modulation and then respectively sent to the ADC + operational amplifier circuit and the carrier frequency divider.
The carrier frequency divider, that is, the second frequency divider generates the number of clocks in the module period after acquiring the control signal received by the coil of the PCB and the TRIGGER signal after pulse width modulation, and generates a clock signal SCLK (clock signal for acquisition) required by the response device.
Signal transmission-wireless transmission line:
the response equipment generates response action after obtaining the control signal and the clock signal SCLK, and generates a feedback signal by the response action. The feedback signal is collected by the ADC and the operational amplifier circuit, enters a PCB coil after passing through the data modulator, and is sent to the first module according to the antenna coupling relation.
And the first module sends a feedback signal to the external main control board according to the signal transmission-feedback receiving line.
The embodiments are merely illustrative of the principles and effects of the present invention, and do not limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed herein be covered by the appended claims.
Claims (12)
1. The module architecture integrating wireless power supply and signal interaction comprises: the first module outputs electric energy and control signals and receives feedback signals, and the second module receives the electric energy and control signals and outputs the feedback signals; the method is characterized in that: the module comprises an integrated circuit which is coupled with the same PCB board by adopting an energy charging circuit and a signal interaction circuit; the integrated circuits on each module are simultaneously used as PCB coils;
the first module includes:
the interface can be butted with an external main control board and is used for accessing electric energy and bidirectional interaction signals in a unidirectional mode;
the first modulation unit generates a carrier wave through a clock crystal oscillator, increases a control signal through a buffer, modulates the control signal and the carrier wave and then sends the modulated control signal and the modulated carrier wave to the module PCB coil;
the first frequency divider generates a clock signal for feedback through the control signal based on the control signal on the carrier wave and feeds the clock signal back to an interface of the external main control board;
the signal processing unit is used for processing the control signal and the feedback signal received by the module PCB coil;
the second module includes:
the electric energy processing unit is used for converting the carrier electric energy received by the module PCB coil and supplying the carrier electric energy to the response equipment;
the second modulation unit is used for stably separating the control signals on the carrier wave;
a second frequency divider generating and distributing an acquisition clock signal based on the separated control signal;
the operational amplifier circuit unit is used for interacting a control signal and a clock signal for acquisition with the response equipment and receiving a feedback signal of the response equipment;
and the third modulation unit is used for modulating the feedback signal and sending the feedback signal to the module PCB coil.
2. The modular architecture for wireless power and signal interaction of claim 1, wherein: the charging circuit of the first module comprises: the interface, the clock crystal oscillator and the PCB coil of the first module.
3. The modular architecture for wireless power and signal interaction of claim 1, wherein: the signal transmission line of the first module comprises: the interface, the signal processing unit, the buffer and the PCB coil of the first module.
4. The modular architecture for wireless power and signal interaction of claim 1, wherein: the signal feedback line of the first module comprises: PCB coil of the first module, the signal processing unit and the interface.
5. The modular architecture for wireless power and signal interaction set forth in claim 1, 3 or 4, wherein: the signal processing unit includes: a comparator, a filter and a detector.
6. The modular architecture for wireless power and signal interaction of claim 1, wherein: the interface also inputs a control clock signal of the frequency divider; the control clock signal controls the first frequency divider to output the clock signals of the number of pulses in the period, and the signals are fed back to the external main control board through the interface.
7. The modular architecture for wireless power and signal interaction of claim 1, wherein: the charging circuit of the second module comprises: the PCB coil of the second module and the electric energy processing unit; the electric energy processing unit includes: filters, rectifiers and regulators.
8. The modular architecture for wireless power and signal interaction of claim 1, wherein: the signal transmission line of the second module comprises: the PCB coil of the second module, the second modulation unit and the operational amplifier circuit unit.
9. The modular architecture for wireless power and signal interaction of claim 1, wherein: the signal feedback circuit of the second module comprises: the operational amplifier circuit unit, the third modulation unit and a PCB coil of the second module.
10. The modular architecture for wireless power and signal interaction according to claim 1 or 8, characterized in that: the second modulation unit includes: a detector, a comparator and a pulse width modulator.
11. A sensor of the modular architecture for wireless power and signal interaction of claim 1, wherein: the method comprises the following steps: a second module disposed on or integrated within the sensor body; a first module that matches a second module on the sensor; the first module and the second module respectively comprise an integrated circuit which is coupled to the same PCB board by adopting an energy charging circuit and a signal interaction circuit; each integrated circuit comprises a PCB coil;
the first module includes:
the interface can be butted with an external main control board and is used for accessing electric energy and bidirectional interaction signals in a unidirectional mode;
the first modulation unit generates a carrier wave through a clock crystal oscillator, increases a control signal through a buffer, modulates the control signal and the carrier wave and then sends the modulated control signal and the modulated carrier wave to the module PCB coil;
the first frequency divider generates a clock signal for feedback through the control signal based on the control signal on the carrier wave and feeds the clock signal back to an interface of the external main control board;
the signal processing unit is used for processing the control signal and the feedback signal received by the module PCB coil;
the second module includes:
the electric energy processing unit is used for converting the carrier electric energy received by the module PCB coil and supplying the carrier electric energy to the response equipment;
the second modulation unit is used for stably separating the control signals on the carrier wave;
a second frequency divider generating and distributing an acquisition clock signal based on the separated control signal;
the operational amplifier circuit unit is used for interacting a control signal and a clock signal for acquisition with the response equipment and receiving a feedback signal of the response equipment;
and the third modulation unit is used for modulating a feedback signal and sending the feedback signal to the module PCB coil.
12. A dynamic torque sensor having the modular architecture of claim 1 with wireless power and signal interaction, wherein: comprises a PCB bottom plate which is separately sleeved on a rotating shaft; the PCB bottom plate includes: a transmitting plate and a receiving plate;
the transmitting plate is integrated with a first module which outputs electric energy and control signals and receives feedback signals; the receiving board is integrated with a second module which receives electric energy and control signals and outputs feedback signals; the module comprises an integrated circuit which is coupled with the same PCB board by adopting an energy charging circuit and a signal interaction circuit; the integrated circuits on each module are simultaneously used as PCB coils;
the first module includes:
the interface can be butted with an external main control board and is used for accessing electric energy and bidirectional interaction signals in a unidirectional mode;
the first modulation unit generates a carrier wave through a clock crystal oscillator, increases a control signal through a buffer, modulates the control signal and the carrier wave and then sends the modulated control signal and the modulated carrier wave to the module PCB coil;
the first frequency divider generates a clock signal for feedback through the control signal based on the control signal on the carrier wave and feeds the clock signal back to an interface of the external main control board;
the signal processing unit is used for processing the control signal and the feedback signal received by the module PCB coil;
the second module includes:
the electric energy processing unit is used for converting the carrier electric energy received by the module PCB coil and supplying the carrier electric energy to the response equipment;
the second modulation unit is used for stably separating the control signals on the carrier wave;
a second frequency divider generating and distributing an acquisition clock signal based on the separated control signal;
the operational amplifier circuit unit is used for interacting a control signal and a clock signal for acquisition with the response equipment and receiving a feedback signal of the response equipment;
and the third modulation unit is used for modulating the feedback signal and sending the feedback signal to the module PCB coil.
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