A kind of wireless mouseTechnical field
The utility model relates to a kind of mouse adopting wireless power.
Background technology
Now widely used wireless mouse adopts powered battery usually, and periodic replacement battery is made troubles to user, more considerably increases the use cost of consumer, meanwhile, also creates the pollution of refuse battery to environment.
The wireless power transmission mode of current main flow has three kinds: electromagnetic induction manifold type, magnet coupled resonant type and electromagenetic wave radiation formula.
The transmission of electromagnetic induction coupling power supply mode is that manufacturing cost is lower, structure simple, technically reliable, but transmission range belongs to millimetre-sized, after mouse leaves launch site certain distance, energy will be decayed in a large number, may cause normally cannot receiving electric power, as when launch site is mouse pad, when mouse leaves mouse pad, can not normal energy acceptance be carried out, there is stronger use restriction.
The power supply mode of magnetic resonance coupling is applicable to the transmission of the wireless power of moderate distance, as at mouse range transmission coil certain distance, be can obtain better laser propagation effect in meter level in transmission range, but when receiving coil range transmission coil is crossed near, transfer efficiency can reduce on the contrary, therefore, time close to mouse is crossed from emissive source (as USB interface radiating circuit), coupling efficiency reduces, and causes the loss of energy.
Utility model content
Based on above reason, the utility model proposes and adopt the scheme of wireless power technology to provide working power for mouse.Wireless power technology is a kind of technology utilizing wireless radio transmission electrical energy.Wireless power transmission and wireless telecommunications principle are identical, and just wireless power transmission is conceived to transmitting energy, so require that transfer efficiency is high as far as possible, through-put power is large as far as possible, could meet the demand to electric power like this.
The electromagnetic induction coupling that the utility model have employed in wireless power technology according to the usability of mouse and feature carries out with magnetic resonance coupling scheme the wireless power mode that combines, compensate for conventionally to use the inconvenience of battery and the defect using single wireless power supply mode.Therefore, need the supply carrying out mouse electric power in conjunction with two kinds of wireless power modes, to carry out complementation power supply, make when mouse is positioned at induction zone (as mouse pad), carry out inductive power supply, when mouse leaves induction zone, during as do not used mouse pad or using mouse in other regions, magnetic resonance coupling is adopted to carry out the demand of powering with satisfied power supply.
A kind of wireless mouse, it has inductive power supply circuit part and to be coupled with magnetic resonance feed circuit part, inductive power supply circuit comprises induction electric energy radiating circuit and induction electric energy receiving circuit two parts, induction electric energy radiating circuit is connected with USB interface of computer cable, mouse pad embedded contactless is coupled former limit current-carrying coil, the built-in secondary current-carrying coil of wireless mouse, the built-in contactless coupling former limit current-carrying coil of mouse pad is connected by the secondary current-carrying coil that inductively mode is built-in with wireless mouse, the BUCK mu balanced circuit that secondary current-carrying coil is formed with by integrated voltage-stabilized chip is connected,
Magnetic resonance coupling feed circuit comprise wireless power transmission module, wireless power receiver module, wireless power transmission module is connected with USB interface of computer cable, the mode that wireless power transmission module is coupled by magnetic resonance is connected with wireless power receiver module, built in radio power receiver module in wireless mouse body, wireless power transmission module comprises high frequency modulation module, power amplifier and electromagnetic radiation circuit, high frequency modulation module and power amplifier, electromagnetic radiation circuit connects successively, wireless power receiving circuit comprises electromagnetic wave receiving circuit, rectification circuit, filtering circuit and mu balanced circuit, electromagnetic wave receiving circuit, rectification circuit, filtering circuit is connected successively with mu balanced circuit.Coil in inductive power supply circuit is circular or square.Repeating coil is adopted in magnetic resonance coupling feed circuit.
Inductive power supply: wireless induction electric power system is primarily of transmitting terminal and receiving end two parts composition, during system works, first the AC/DC electricity provided by transmitting terminal power supply is converted to high frequency ac signal by controlled resonant converter or high frequency modulation module, then drive transmitting coil, make to produce in the spatial dimension of transmitting coil certain distance around very little the but electromagnetic field of high frequency change of magnetic field intensity.Receiving coil is positioned at this elect magnetic field, and the high frequency change of transmitting coil magnetic flux produces the high-frequency induction electromotive force of certain amplitude in receiving coil.By being added in bridge rectifier on receiving coil two ends or capacitor filter, just direct current supply can be provided to export for load.
Inductive power supply circuit comprises induction electric energy radiating circuit and induction electric energy receiving circuit two parts.Induction electric energy radiating circuit adopts USB to power, and voltage is 5V, is produced the high frequency oscillating current of about 138 kHz by self-maintained circuit; Induction electric energy receiving circuit adopts inductively mode to obtain electric energy.Mouse pad built-in sensitive is coupled former limit current-carrying coil L, the built-in secondary current-carrying coil of wireless mouse.As adopted induction coupling platform mode to obtain electric energy, form BUCK mu balanced circuit by integrated voltage-stabilized chip, load voltage is 3.3 V.Owing to adopting inductive power supply, therefore do not need battery.Inductive coil can adopt circular or square or other polygonal coils.
Resonance coupling power supply: magnet coupled resonant type wireless electric energy transmission technology is the principle utilizing resonance, the parameter of emitter and receiving trap is rationally set, transmitting coil is made all to have identical resonance frequency with receiving coil and whole system, and system can reach a kind of " electric resonance " state under the power drives of this resonance frequency, thus realize energy and transmit efficiently at transmitting terminal and receiving end.Magnet coupled resonant type wireless electric energy transmission system is primarily of power supply, energy conversion and transmitting device (coil resonator), and energy acceptance device three part forms.Wireless power supply system provides working power to wireless mouse. and principle the power supply obtained from USB interface of computer is become electromagnetic wave through wireless power transmission module converter and launched, and a wireless power receiver module is housed in wireless mouse body. and becoming electric energy after the electromagnetic wave launched can being received for mouse provides power supply.Its structure, primarily of wireless power transmission transmitter module A and wireless power transmission receiver module B two parts, obtains+5V power supply from computing machine, is converted to high frequency ac signal by high frequency modulation module. carry out power amplification through resonance by power amplifier.Then drive the outside emitting electromagnetic wave of electromagnetic radiation circuit, form a non-radiative magnetic field around, namely convert electric energy to magnetic field; When the natural frequency of the electromagnetic wave receiving circuit in wireless power transmission receiver module B is identical with the wave frequency received, the oscillating current produced in receiving circuit is the strongest, complete the conversion of magnetic field to electric energy. thus realize the high efficiency of transmission of electric energy, then through rectification, filtering and mu balanced circuit, the dither electric current received is become the work that direct current is Genius mouse power supply is provided.Magnetic resonance coupled circuit can adopt repeating coil or other resonance intensifier circuits.
Accompanying drawing explanation
Fig. 1 is the inductive power supply part of the mouse of embodiment
Fig. 2 is the magnetic resonance coupling power pack of the mouse of embodiment.
Embodiment
The electromagnetic induction coupling that the utility model have employed in wireless power technology according to the usability of mouse and feature carries out with magnetic resonance coupling scheme the wireless power mode that combines, compensate for conventionally to use the inconvenience of battery and the defect using single wireless power supply mode.Therefore, need the supply carrying out mouse electric power in conjunction with two kinds of wireless power modes, to carry out complementation power supply, make when mouse is positioned at induction zone (as mouse pad), carry out inductive power supply, when mouse leaves induction zone, during as do not used mouse pad or using mouse in other regions, magnetic resonance coupling is adopted to carry out the demand of powering with satisfied power supply.
As shown in Figure 1, the inductive power supply part of mouse: inductive power supply circuit is primarily of transmitting terminal and receiving end two parts composition, during system works, first the AC/DC electricity provided by transmitting terminal power supply is converted to high frequency ac signal by controlled resonant converter or high frequency modulation module, then drive transmitting coil, make to produce in the spatial dimension of transmitting coil certain distance around very little the but electromagnetic field of high frequency change of magnetic field intensity.Receiving coil is positioned at this elect magnetic field, and the high frequency change of transmitting coil magnetic flux produces the high-frequency induction electromotive force of certain amplitude in receiving coil.By being added in bridge rectifier on receiving coil two ends or capacitor filter, just direct current supply can be provided to export for load.Inductive power supply circuit comprises induction electric energy radiating circuit and induction electric energy receiving circuit two parts.Induction electric energy radiating circuit adopts USB to power, and voltage is 5V, is produced the high frequency oscillating current of about 138 kHz by self-maintained circuit; Induction electric energy receiving circuit adopts inductively mode to obtain electric energy.Mouse pad built-in sensitive is coupled former limit current-carrying coil L, the built-in secondary current-carrying coil of wireless mouse.As adopted induction coupling platform mode to obtain electric energy, form BUCK mu balanced circuit by integrated voltage-stabilized chip, load voltage is 3.3 V.Owing to adopting inductive power supply, therefore do not need battery.
The resonance coupling power pack of mouse as shown in Figure 2: magnet coupled resonant type wireless electric energy transmission technology is the principle utilizing resonance, the parameter of emitter and receiving trap is rationally set, transmitting coil is made all to have identical resonance frequency with receiving coil and whole system, and system can reach a kind of " electric resonance " state under the power drives of this resonance frequency, thus realize energy and transmit efficiently at transmitting terminal and receiving end.Magnet coupled resonant type wireless electric energy transmission system is primarily of power supply, energy conversion and transmitting device (coil resonator), and energy acceptance device three part forms.Wireless power supply system provides working power to wireless mouse. and principle the power supply obtained from USB interface of computer is become electromagnetic wave through wireless power transmission module converter and launched, and a wireless power receiver module is housed in wireless mouse body. and becoming electric energy after the electromagnetic wave launched can being received for mouse provides power supply.Its structure, primarily of wireless power transmission transmitter module A and wireless power transmission receiver module B two parts, obtains+5V power supply from computing machine, is converted to high frequency ac signal by high frequency modulation module. carry out power amplification through resonance by power amplifier.Then drive the outside emitting electromagnetic wave of electromagnetic radiation circuit, form a non-radiative magnetic field around, namely convert electric energy to magnetic field; When the natural frequency of the electromagnetic wave receiving circuit in wireless power transmission receiver module B is identical with the wave frequency received, the oscillating current produced in receiving circuit is the strongest, complete the conversion of magnetic field to electric energy. thus realize the high efficiency of transmission of electric energy, then through rectification, filtering and mu balanced circuit, the dither electric current received is become the work that direct current is Genius mouse power supply is provided.