CN105759682A - Wireless wakeup system and method, controller and controlled device - Google Patents
Wireless wakeup system and method, controller and controlled device Download PDFInfo
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- CN105759682A CN105759682A CN201610077854.9A CN201610077854A CN105759682A CN 105759682 A CN105759682 A CN 105759682A CN 201610077854 A CN201610077854 A CN 201610077854A CN 105759682 A CN105759682 A CN 105759682A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention provides a wireless wakeup system and method, a controller and a controlled device. The system comprises the controller and the controlled device; the controller is provided with a wireless wakeup emission circuit to generator a first PWM signal, amplify the first PWM signal, filter the first PWM signal to obtain a second PWM signal, and emit the second PWM signal; the controlled device is provided with a wireless wakeup reception circuit to receive the second PWM signal, filter the second PWM signal, and convert the filtered second PWM signal into a DC signal; and the DC signal is input to a microcontroller of the controlled device to wake up the microcontroller. According to the invention, wireless wakeup can be realized in low cost, and power consumption of the wireless wakeup system is effectively reduced.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of wireless wake-up system, method, control equipment and controlled plant.
Background technology
The precision of wireless device is more and more higher, the application scenarios related to also becomes increasingly complex, and it is typically all battery-powered, but the electricity of battery ratio again is relatively limited, this makes power consumption, stand-by time become the important indicator that present wireless device performance requires, is also one of the important criterion of product competitiveness in the market.When not taking dormancy, even if chip and equipment adopt the technology of low-power consumption, the actual the longest stand-by time obtained of measuring also is unsafty, and therefore, adopting the mode of dormancy to reduce power consumption has become a trend of following wireless device reduction power consumption to extend stand-by time.
Adopt the wireless awakening technology not only can the stand-by time of extension device, whole wireless communication system can also be made more controllable, for data collecting system, the user being in main control end oneself can determine when carry out data acquisition, without waiting that the spontaneous of data acquisition node is waken up.Meanwhile, wireless awakening can be applied in the scene of on-site wireless upgrading, and this brings huge facility for the maintenance of wireless device not quick detachable, that installation site is hidden.
At present, comparatively conventional wireless awakening technology is passive waking up, chip is waken up by special, receive and accumulation wireless awakening signal energy, produce direct current triggering level wake on wireless equipment, to reduce the effect of system power dissipation, but adopt that special to wake chip cost up higher, extra power consumption can be brought, cause that the effect reducing system power dissipation is not still especially desirable.
Summary of the invention
Embodiments provide a kind of wireless wake-up system, method, control equipment and controlled plant, it is possible to realize wireless awakening at low cost, effectively reduce the power consumption of wireless wake-up system simultaneously.
Embodiment of the present invention first aspect provides a kind of wireless wake-up system, including control equipment and controlled plant, wherein:
Described control equipment is provided with wireless awakening radiating circuit, is used for producing the first pulse width modulation (PWM) signal, described first pwm signal is amplified, filters and obtain the second pwm signal, and launched by described second pwm signal；
Described controlled plant is provided with wireless awakening and receives circuit, for receiving described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
Optionally, described wireless awakening radiating circuit includes signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, described amplifying circuit and described first filter circuit and is connected in series between described signal generating circuit and described transmitting coil；
Described signal generating circuit, is used for producing described first pwm signal；
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain described second pwm signal；
Described transmitting coil, for launching described second pwm signal；
Described wireless awakening receives circuit and includes receiving coil, the second filter circuit and voltage doubling rectifing circuit, and described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit；
Described receiving coil, is used for receiving described second pwm signal；
Described second filter circuit, for being filtered described second pwm signal；
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs described microcontroller, is used for waking described microcontroller up.
Optionally, described wireless awakening radiating circuit also includes the first match circuit connecting described transmitting coil, for regulating the resonant frequency of described transmitting coil to identical with the frequency of described second pwm signal；
Described wireless awakening receives the second match circuit that circuit also includes connecting described receiving coil, for regulating the resonant frequency of described receiving coil to identical with the frequency of described second pwm signal.
Optionally, described transmitting coil and described receiving coil are printing board PCB coil.
Optionally, described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
Embodiment of the present invention second aspect provides a kind of control equipment, it is applied in wireless wake-up system, described wireless wake-up system includes described control equipment and controlled plant, described controlled plant is provided with wireless awakening and receives circuit, described control equipment includes the wireless awakening radiating circuit being made up of signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, wherein:
Described amplifying circuit and described first filter circuit are connected in series between described signal generating circuit and described transmitting coil；
Described signal generating circuit, is used for producing the first pwm signal；
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain the second pwm signal；
Described transmitting coil, for launching described second pwm signal；
Wherein, described second pwm signal is used for indicating described controlled plant after being received circuit by described wireless awakening and receiving described second pwm signal, receive circuit by described wireless awakening described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
The embodiment of the present invention third aspect provides a kind of controlled plant, it is applied in wireless wake-up system, described wireless wake-up system includes control equipment and described controlled plant, described control equipment is provided with wireless awakening radiating circuit, the wireless awakening that described controlled plant includes being made up of receiving coil, the second filter circuit and voltage doubling rectifing circuit receives circuit, wherein:
Described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit；
Described receiving coil, is used for receiving the second pwm signal；
Described second filter circuit, for being filtered described second pwm signal；
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up；
Wherein, described second pwm signal obtains after the first pwm signal produced by described wireless awakening radiating circuit being amplified, filtered by described control equipment and launches.
Optionally, described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
Embodiment of the present invention fourth aspect provides a kind of wireless awakening method, it is applied in wireless wake-up system, described wireless wake-up system includes control equipment and controlled plant, described control equipment is provided with wireless awakening radiating circuit, described controlled plant is provided with wireless awakening and receives circuit, and described method includes:
Described control equipment produces the first pwm signal by described wireless awakening radiating circuit, described first pwm signal is amplified, filters and obtain the second pwm signal, and launched by described second pwm signal；
Described controlled plant receives circuit by described wireless awakening and receives described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
Optionally, described wireless awakening radiating circuit includes signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, described amplifying circuit and described first filter circuit are connected in series between described signal generating circuit and described transmitting coil, described wireless awakening receives circuit and includes receiving coil, the second filter circuit and voltage doubling rectifing circuit, described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit, wherein:
Described control equipment produces the first pwm signal by described wireless awakening radiating circuit, described first pwm signal is amplified, filters and obtain the second pwm signal, and by the concrete mode that described second pwm signal is launched be:
Described first pwm signal is produced by described signal generating circuit；
By described amplifying circuit and described first filter circuit, described first pwm signal is amplified, filters, obtain described second pwm signal；
By described transmitting coil, described second pwm signal is launched；
Described controlled plant receives circuit by described wireless awakening and receives described second pwm signal, described second pwm signal is filtered, and by the concrete mode that filtered described second pwm signal is converted to direct current signal is:
Described second pwm signal is received by described receiving coil；
By described second filter circuit, described second pwm signal is filtered；
By described voltage doubling rectifing circuit, filtered described second pwm signal is converted to direct current signal.
In the embodiment of the present invention, wireless wake-up system includes control equipment and controlled plant, this control equipment is provided with wireless awakening radiating circuit, for producing the first pulse width modulation (PWM) signal, this first pwm signal is amplified, filters and obtain the second pwm signal, and this second pwm signal is launched；This controlled plant is provided with wireless awakening and receives circuit, for receiving this second pwm signal, this second pwm signal is filtered, and this second pwm signal filtered is converted to direct current signal, this direct current signal inputs the microcontroller of this controlled plant, for waking this microcontroller up, it is possible to realize wireless awakening at low cost, effectively reduce the power consumption of wireless wake-up system simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of wireless wake-up system that the embodiment of the present invention provides；
Fig. 2 is the structural representation of a kind of voltage doubling rectifing circuit that the embodiment of the present invention provides；
Fig. 3 is a kind of electrical block diagram controlling equipment that the embodiment of the present invention provides；
Fig. 4 is the electrical block diagram of a kind of controlled plant that the embodiment of the present invention provides；
Fig. 5 is an embodiment schematic flow sheet of a kind of wireless awakening method that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Control equipment in the embodiment of the present invention can be the main control device of user side in wireless communication system, can possess display screen, touch screen etc., such as slap machine, to be conveniently carried out the remote equipment in wireless communication system carries out the on-site maintenance work such as digital independent, problem diagnosis, program renewal；Controlled plant can be the remote equipment in wireless communication system, possesses arousal function, need not entering resting state during work, to reduce equipment power dissipation, for instance for gathering the node device of data in data collecting system.
Refer to Fig. 1, for the structural representation of a kind of wireless wake-up system that the embodiment of the present invention provides.Wireless wake-up system described in the present embodiment, including control equipment and controlled plant, wherein:
Described control equipment is provided with wireless awakening radiating circuit, (English: PulseWidthModulation for producing the first pulse width modulation, abbreviation: PWM) signal, described first pwm signal is amplified, filters and obtain the second pwm signal, and described second pwm signal is launched.
Wherein, described wireless awakening radiating circuit includes signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, described amplifying circuit and described first filter circuit and is connected in series between described signal generating circuit and described transmitting coil.
Described signal generating circuit, is used for producing described first pwm signal.
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain described second pwm signal.
Described transmitting coil, for launching described second pwm signal.
Described controlled plant is provided with wireless awakening and receives circuit, for receiving described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
Wherein, described wireless awakening receives circuit and includes receiving coil, the second filter circuit and voltage doubling rectifing circuit, and described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit.
Described receiving coil, is used for receiving described second pwm signal.
Described second filter circuit, for being filtered described second pwm signal.
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs described microcontroller, is used for waking described microcontroller up.
Wherein, this first pwm signal can be low frequency signal, for instance less than or equal to 4MHz, simultaneously need to separate with the frequency zones used that communicates, adopts simple pwm signal can reduce the complexity of circuit design, it is not necessary to adopts and special wakes chip up.Adopt low frequency signal can be effectively prevented from introducing the interference signal in environment, it is prevented that to wake maloperation up, improve the accuracy of wireless awakening.
Further, this first pwm signal can also adopt special frame sequence, it is possible to is applicable to the equipment with frame sequence recognition function, improves the accuracy of wireless awakening.In addition, if the wireless awakening radiating circuit of relevant device or wireless awakening receive circuit possesses modulation, demodulation function, can also being modulated by wireless awakening radiating circuit by this first pwm signal, wireless awakening receives circuit and demodulates to realize wireless awakening, it is possible to dramatically increase communication distance.
Wherein, it is (English: PrintedCircuitBoard that this transmitting coil and this receiving coil are printed circuit board, abbreviation: PCB) coil, and PCB coil can directly be made on relevant device (namely controlling equipment, controlled plant), reduce the design cost of signal transmitting and reception part, also reduce the volume of relevant device simultaneously.The wiring rule of PCB coil can adjust flexibly according to the circuit structure of relevant device, usually, in order to the emitting performance and receiving coil that strengthen transmitting coil receptivity can by PCB coil on pcb board around referring to 2 layers or 4 layers.
Wherein, this amplifying circuit may be about the amplifying circuit that audion is built, it is possible to selects single-stage amplifier tube or the multiple tube of multistage audion composition, including Darlington transistor, operational amplifier etc., resistance in this amplifying circuit can adopt power resistor, to prevent from burning out circuit board.Produce suitable operating point by biasing circuit so that this amplifying circuit is operated in amplification region, and by capacitance etc. this first pwm signal after amplifying exported and be filtered to this first filter circuit.
Wherein, this first filter circuit and this second filter circuit can be passive bandwidth-limited circuits, for instance LC bandwidth-limited circuit, to filter thermal noise and the environment noise etc. of this amplifying circuit.
Wherein, this voltage doubling rectifing circuit can adopt the C-W voltage doubling rectifing circuit shown in Fig. 2, and the amplification performance of this voltage doubling rectifing circuit can wake distance as required up and adjust flexibly.Vin input be this second pwm signal filtered, OUT output be voltage multiplying rectifier after the direct current signal that obtains.
In the embodiment that some are feasible, described wireless awakening radiating circuit also includes the first match circuit connecting described transmitting coil, for regulating the resonant frequency of described transmitting coil to identical with the frequency of described second pwm signal.
Described wireless awakening receives the second match circuit that circuit also includes connecting described receiving coil, for regulating the resonant frequency of described receiving coil to identical with the frequency of described second pwm signal.
Wherein, by for this transmitting coil arrange with this receiving coil match circuit can so that this transmitting coil is identical with the frequency of this second pwm signal with the resonant frequency of this receiving coil, thus maximizing the emitting performance of this transmitting coil and the receptivity of this receiving coil.In order to make this transmitting coil and this receiving coil and this second pwm signal resonance, debugging interface can be left so that tuning is shaken for this transmitting coil and this receiving coil, by this amplifying circuit, this first filter circuit and this first match circuit being carried out signal (i.e. this second pwm signal) maximum intensity that combined debugging makes this transmitting coil launch, same, by this second match circuit and this second filter circuit being carried out signal (i.e. this second pwm signal) maximum intensity that combined debugging makes this receiving coil receive.
Wherein, it is (English: wakeup) pin that this direct current signal specifically can input waking up of the microcontroller of this controlled plant, this microcontroller can be waken when waking thresholding up up so that this microcontroller transfers duty to from resting state when what the voltage of this direct current signal reached this wakeup pin.
In the embodiment that some are feasible, described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
Wherein, when transmitting coil and receiving coil close together, voltage or the electric current of the direct current signal of this voltage doubling rectifing circuit output can be very big, easily burn out the wakeup pin of the microcontroller of this controlled plant, can effectively prevent this wakeup pin to be burned by serial regulating circuit between the outfan of this voltage doubling rectifing circuit and this wakeup pin and current-limiting circuit.This mu balanced circuit can adopt such as transient voltage suppressor diode (English: TransientVoltageSuppressor, abbreviation: TVS), this current-limiting circuit can adopt the current-limiting resistance of such as 4.7K Ω.
Further, it is possible to receive at this wireless awakening and between circuit and this wakeup pin, a pull down resistor over the ground is set, to prevent issuable bursty interference, improve the stability of wireless awakening.
In the embodiment of the present invention, wireless wake-up system includes control equipment and controlled plant, wireless awakening radiating circuit and wireless awakening reception circuit and is separately positioned on existing equipment, it is achieved the multiplexing of equipment, reduces production cost.Specifically this control equipment is provided with this wireless awakening radiating circuit, is used for producing the first pulse width modulation (PWM) signal, this first pwm signal is amplified, filters and obtain the second pwm signal, and launched by this second pwm signal；This controlled plant is provided with this wireless awakening and receives circuit, for receiving this second pwm signal, this second pwm signal is filtered, and this second pwm signal filtered is converted to direct current signal, this direct current signal inputs the microcontroller of this controlled plant, is used for waking this microcontroller up, it is possible to realize wireless awakening at low cost, effectively reduce the power consumption of wireless wake-up system, improve the accuracy of wireless awakening.
Refer to Fig. 3, for a kind of electrical block diagram controlling equipment that the embodiment of the present invention provides.Application of control device described in the present embodiment is in the wireless wake-up system shown in Fig. 1, described wireless wake-up system includes described control equipment and controlled plant, described controlled plant is provided with wireless awakening and receives circuit, described control equipment includes the wireless awakening radiating circuit being made up of signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, wherein:
Described amplifying circuit and described first filter circuit are connected in series between described signal generating circuit and described transmitting coil.
Described signal generating circuit, is used for producing the first pwm signal.
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain the second pwm signal.
Described transmitting coil, for launching described second pwm signal.
Wherein, described second pwm signal is used for indicating described controlled plant after being received circuit by described wireless awakening and receiving described second pwm signal, receive circuit by described wireless awakening described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
In the embodiment of the present invention, wireless awakening radiating circuit and wireless awakening receive circuit and are separately positioned on existing equipment, it is achieved the multiplexing of equipment, reduce production cost.Specifically this control equipment is provided with the wireless awakening radiating circuit being made up of signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, this signal generating circuit, for producing the first pwm signal, this amplifying circuit and this first filter circuit, for this first pwm signal is amplified, filters, obtaining the second pwm signal, this transmitting coil, for launching this second pwm signal.This second pwm signal is used for indicating this controlled plant after being received circuit by this wireless awakening and receiving this second pwm signal, receive circuit by this wireless awakening this second pwm signal is filtered, and this second pwm signal filtered is converted to direct current signal, this direct current signal inputs the microcontroller of this controlled plant, for waking this microcontroller up, wireless awakening can be realized at low cost, effectively reduce the power consumption of wireless wake-up system, improve the accuracy of wireless awakening.
Refer to Fig. 4, for the electrical block diagram of a kind of controlled plant that the embodiment of the present invention provides.Controlled plant described in the present embodiment is applied to the wireless wake-up system shown in Fig. 1, described wireless wake-up system includes control equipment and described controlled plant, described control equipment is provided with wireless awakening radiating circuit, the wireless awakening that described controlled plant includes being made up of receiving coil, the second filter circuit and voltage doubling rectifing circuit receives circuit, wherein:
Described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit.
Described receiving coil, is used for receiving the second pwm signal.
Described second filter circuit, for being filtered described second pwm signal.
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
Wherein, described second pwm signal obtains after the first pwm signal produced by described wireless awakening radiating circuit being amplified, filtered by described control equipment and launches.
In the embodiment that some are feasible, described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
In the embodiment of the present invention, wireless awakening receives circuit and wireless awakening radiating circuit is separately positioned on existing equipment, it is achieved the multiplexing of equipment, reduces production cost.Specifically this controlled plant is provided with by receiving coil, the wireless awakening of the second filter circuit and voltage doubling rectifing circuit composition receives circuit, this receiving coil, for receiving the second pwm signal, this second filter circuit, for this second pwm signal is filtered, this voltage doubling rectifing circuit, for this second pwm signal filtered is converted to direct current signal, the microcontroller of this direct current signal input controlled plant, for waking this microcontroller up, wherein, the first pwm signal produced by this wireless awakening radiating circuit is amplified by this second pwm signal by this control equipment, obtain after filtering and launch, wireless awakening can be realized at low cost, effectively reduce the power consumption of wireless wake-up system, improve the accuracy of wireless awakening.
Refer to Fig. 5, for an embodiment schematic flow sheet of a kind of wireless awakening method that the embodiment of the present invention provides.Wireless awakening method described in the present embodiment is applied to the wireless wake-up system shown in Fig. 1, described wireless wake-up system includes control equipment and described controlled plant, described control equipment is provided with wireless awakening radiating circuit, described controlled plant is provided with wireless awakening and receives circuit, said method comprising the steps of:
S501, control equipment produce the first pwm signal by wireless awakening radiating circuit, described first pwm signal is amplified, filters and obtain the second pwm signal, and launched by described second pwm signal.
Wherein, the circuit structure of this control equipment can as it is shown on figure 3, this wireless awakening radiating circuit specifically can include signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil.
Concrete, when controlled plant is waken up by needs, this control equipment can automatically trigger according to business demand or be triggered this signal generating circuit by user by specified button (including physical button or virtual touch controlled key etc.) and produce this first pwm signal.
Wherein, this first pwm signal can be low frequency signal, for instance less than or equal to 4MHz, simultaneously need to separate with the frequency zones used that communicates, adopts simple pwm signal can reduce the complexity of circuit design, it is not necessary to adopts and special wakes chip up.Adopt low frequency signal can be effectively prevented from introducing the interference signal in environment, it is prevented that to wake maloperation up, improve the accuracy of wireless awakening.
In the embodiment that some are feasible, this signal generating circuit can also be produce special frame sequence, it is possible to produce the signal of respective type depending on the difference of operative scenario.
Further, this first pwm signal is amplified by this control equipment by this amplifying circuit, this first filter circuit, filter and obtain this second pwm signal, is launched by this second pwm signal again through this transmitting coil.
In the embodiment that some are feasible, this second pwm signal can first be retransmited away by this transmitting coil after ovennodulation, it is possible to increases communication distance.
S502, controlled plant receive circuit by wireless awakening and receive described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
Wherein, the circuit structure of this controlled plant can as shown in Figure 4, and this wireless awakening radiating circuit specifically can include receiving coil, the second filter circuit and voltage doubling rectifing circuit.
Concrete, this transmitting coil and this receiving coil are tuned and shakes, this transmitting coil under the frequency of this second pwm signal is made to possess the emitting performance of the best, this receiving coil possesses the receptivity of the best, this controlled plant receives this second pwm signal by this receiving coil, if this second pwm signal have passed through modulation, this second pwm signal is first demodulated by this controlled plant.
Further, this second pwm signal is filtered by this controlled plant by this second filter circuit, again through this voltage doubling rectifing circuit, this second pwm signal filtered is converted to direct current signal, this direct current signal inputs the wakeup pin of the microcontroller of this controlled plant, this microcontroller can be waken when waking thresholding up up so that this microcontroller transfers duty to from resting state when what the voltage of this direct current signal reached this wakeup pin.
In the embodiment that some are feasible, when transmitting coil and receiving coil close together, voltage or the electric current of the direct current signal of this voltage doubling rectifing circuit output can be very big, easily burn out the wakeup pin of the microcontroller of this controlled plant, can effectively prevent this wakeup pin to be burned by serial regulating circuit between the outfan of this voltage doubling rectifing circuit and this wakeup pin and current-limiting circuit.This mu balanced circuit can adopt such as TVS, and this current-limiting circuit can adopt the current-limiting resistance of such as 4.7K Ω.
Further, it is possible to receive at this wireless awakening and between circuit and this wakeup pin, a pull down resistor over the ground is set, to prevent issuable bursty interference, improve the stability of wireless awakening.
In the embodiment of the present invention, control equipment produces the first pulse width modulation (PWM) signal by wireless awakening radiating circuit, and by this wireless awakening radiating circuit, this first pwm signal is amplified, filters and obtain the second pwm signal, and this second pwm signal is launched；Controlled plant receives circuit by wireless awakening and receives this second pwm signal, this second pwm signal is filtered, and this second pwm signal filtered is converted to direct current signal, this direct current signal inputs the microcontroller of this controlled plant, for waking this microcontroller up, such that it is able to realize wireless awakening at low cost, effectively reduce the power consumption of wireless wake-up system, improve the accuracy of wireless awakening.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can be by the hardware that computer program carrys out instruction relevant to complete, described program can be stored in a computer read/write memory medium, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random access memory (RandomAccessMemory is called for short RAM) etc..
A kind of wireless wake-up system, method, control equipment and the controlled plant that above the embodiment of the present invention are provided are described in detail, principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. a wireless wake-up system, it is characterised in that include control equipment and controlled plant, wherein:
Described control equipment is provided with wireless awakening radiating circuit, is used for producing the first pulse width modulation (PWM) signal, described first pwm signal is amplified, filters and obtain the second pwm signal, and launched by described second pwm signal；
Described controlled plant is provided with wireless awakening and receives circuit, for receiving described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
2. system according to claim 1, it is characterised in that
Described wireless awakening radiating circuit includes signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, described amplifying circuit and described first filter circuit and is connected in series between described signal generating circuit and described transmitting coil；
Described signal generating circuit, is used for producing described first pwm signal；
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain described second pwm signal；
Described transmitting coil, for launching described second pwm signal；
Described wireless awakening receives circuit and includes receiving coil, the second filter circuit and voltage doubling rectifing circuit, and described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit；
Described receiving coil, is used for receiving described second pwm signal；
Described second filter circuit, for being filtered described second pwm signal；
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs described microcontroller, is used for waking described microcontroller up.
3. system according to claim 2, it is characterised in that
Described wireless awakening radiating circuit also includes the first match circuit connecting described transmitting coil, for regulating the resonant frequency of described transmitting coil to identical with the frequency of described second pwm signal；
Described wireless awakening receives the second match circuit that circuit also includes connecting described receiving coil, for regulating the resonant frequency of described receiving coil to identical with the frequency of described second pwm signal.
4. the system according to Claims 2 or 3, it is characterised in that
Described transmitting coil and described receiving coil are printing board PCB coil.
5. the system according to any one of claim 2～4, it is characterised in that
Described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
6. one kind controls equipment, it is characterized in that, it is applied in wireless wake-up system, described wireless wake-up system includes described control equipment and controlled plant, described controlled plant is provided with wireless awakening and receives circuit, described control equipment includes the wireless awakening radiating circuit being made up of signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, wherein:
Described amplifying circuit and described first filter circuit are connected in series between described signal generating circuit and described transmitting coil；
Described signal generating circuit, is used for producing the first pwm signal；
Described amplifying circuit and described first filter circuit, for described first pwm signal is amplified, is filtered, obtain the second pwm signal；
Described transmitting coil, for launching described second pwm signal；
Wherein, described second pwm signal is used for indicating described controlled plant after being received circuit by described wireless awakening and receiving described second pwm signal, receive circuit by described wireless awakening described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
7. a controlled plant, it is characterized in that, it is applied in wireless wake-up system, described wireless wake-up system includes control equipment and described controlled plant, described control equipment is provided with wireless awakening radiating circuit, the wireless awakening that described controlled plant includes being made up of receiving coil, the second filter circuit and voltage doubling rectifing circuit receives circuit, wherein:
Described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit；
Described receiving coil, is used for receiving the second pwm signal；
Described second filter circuit, for being filtered described second pwm signal；
Described voltage doubling rectifing circuit, for filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up；
Wherein, described second pwm signal obtains after the first pwm signal produced by described wireless awakening radiating circuit being amplified, filtered by described control equipment and launches.
8. controlled plant according to claim 7, it is characterised in that
Described wireless awakening receives circuit and also includes mu balanced circuit and current-limiting circuit, described mu balanced circuit and described current-limiting circuit are connected in series between described voltage doubling rectifing circuit and described microcontroller, for inputting described microcontroller after described direct current signal is carried out voltage stabilizing, current limliting.
9. a wireless awakening method, it is characterised in that be applied in wireless wake-up system, described wireless wake-up system includes control equipment and controlled plant, described control equipment is provided with wireless awakening radiating circuit, and described controlled plant is provided with wireless awakening and receives circuit, and described method includes:
Described control equipment produces the first pwm signal by described wireless awakening radiating circuit, described first pwm signal is amplified, filters and obtain the second pwm signal, and launched by described second pwm signal；
Described controlled plant receives circuit by described wireless awakening and receives described second pwm signal, described second pwm signal is filtered, and filtered described second pwm signal is converted to direct current signal, described direct current signal inputs the microcontroller of described controlled plant, is used for waking described microcontroller up.
10. method according to claim 9, it is characterized in that, described wireless awakening radiating circuit includes signal generating circuit, amplifying circuit, the first filter circuit and transmitting coil, described amplifying circuit and described first filter circuit are connected in series between described signal generating circuit and described transmitting coil, described wireless awakening receives circuit and includes receiving coil, the second filter circuit and voltage doubling rectifing circuit, described second filter circuit is connected between described receiving coil and described voltage doubling rectifing circuit, wherein:
Described control equipment produces the first pwm signal by described wireless awakening radiating circuit, described first pwm signal is amplified, filters and obtain the second pwm signal, and by the concrete mode that described second pwm signal is launched be:
Described first pwm signal is produced by described signal generating circuit；
By described amplifying circuit and described first filter circuit, described first pwm signal is amplified, filters, obtain described second pwm signal；
By described transmitting coil, described second pwm signal is launched；
Described controlled plant receives circuit by described wireless awakening and receives described second pwm signal, described second pwm signal is filtered, and by the concrete mode that filtered described second pwm signal is converted to direct current signal is:
Described second pwm signal is received by described receiving coil；
By described second filter circuit, described second pwm signal is filtered；
By described voltage doubling rectifing circuit, filtered described second pwm signal is converted to direct current signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610077854.9A CN105759682A (en) | 2016-02-03 | 2016-02-03 | Wireless wakeup system and method, controller and controlled device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610077854.9A CN105759682A (en) | 2016-02-03 | 2016-02-03 | Wireless wakeup system and method, controller and controlled device |
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