CN114123441B - Polarity detection-based self-powered method and device - Google Patents
Polarity detection-based self-powered method and device Download PDFInfo
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- CN114123441B CN114123441B CN202111185611.4A CN202111185611A CN114123441B CN 114123441 B CN114123441 B CN 114123441B CN 202111185611 A CN202111185611 A CN 202111185611A CN 114123441 B CN114123441 B CN 114123441B
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- 238000001514 detection method Methods 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title abstract description 31
- 238000010248 power generation Methods 0.000 claims abstract description 160
- 238000012545 processing Methods 0.000 claims abstract description 95
- 230000009471 action Effects 0.000 claims abstract description 66
- 238000004146 energy storage Methods 0.000 claims abstract description 39
- 230000033001 locomotion Effects 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims description 18
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
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- 238000005316 response function Methods 0.000 claims description 2
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- 230000005540 biological transmission Effects 0.000 description 13
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to the technical field of self-power generation, and provides a self-power supply method and device based on polarity detection. The movement of the power generation device is reciprocating movement, and the polarity of power generation generated by the movement in the first direction is opposite to that of power generation generated by the movement in the second direction; the first direction movement is a trigger direction, and the second direction is a reset direction; intermittent electric energy generated by the power generation device under at least two external force actions is stored in the energy storage device; the polarity detection device is electrically connected with the power generation device and is used for providing a detection signal for the processing device, and the polarity detection device switches the working mode of the processing device according to the polarity of the current generated by the power generation device. Aiming at the reciprocating type pulse generator with opposite power generation polarities for two times, the invention can more reasonably utilize the electric energy of the reciprocating motor, and solves the problem of failure of a certain working mode under normal starting of a processor in the prior art.
Description
[ field of technology ]
The invention relates to the technical field of self-power generation, in particular to a self-power supply method and device based on polarity detection.
[ background Art ]
The power generation device, in particular the pulse kinetic energy power generation device, is a device for converting motion mechanical energy into pulse electric energy, the electric energy generated by the power generation device is used for driving the processing device to realize the function, the system does not need other energy input, and the power generation device is the only electric energy source of the system. A typical application area is a self-generating radio switch, which is pressed and released by an operator, and whose internal pulse generator will generate electrical energy twice, which is used to drive the internal circuit module into operation, and eventually will send a wireless signal.
In conventional designs, during the process of pressing and releasing the generator by the user, the electric energy generated by the generator twice is utilized separately, for example: the device transmits a radio signal once at the time of pressing and at the time of resetting, respectively, which is conventionally without problems. By way of example, such as a generator producing 150uJ of power per actuation, a circuit module consumes 150uJ of power per actuation, such that each actuation of the generator may support a single circuit module actuation.
However, in some demand scenarios, the demand of the circuit module for electrical energy may be strongly increased, for example, it is desirable to increase the transmission power of the radio to obtain a longer transmission distance, for example, the required power is increased to 300uJ, but the electrical energy of the generator is only 150uJ. In the conventional design, the circuit module and the generator start to work when the generator acts for the first time, but after a period of time, the energy consumption is completed, and the task execution of the circuit module fails. Likewise, when the motor is reset, the circuit module resumes work, but again the energy is insufficient and the task execution fails. Such as: for the self-generating wireless switch, in the existing design, even if the power generation function is insufficient, the preset function can be forcibly executed, for example, the wireless communication action in the communication module, so that not only is the self-generating electric energy wasted, but also wireless data cannot be correctly and completely transmitted, so that the opposite terminal cannot effectively receive or recognize the wireless data, and extremely scarce self-generating electric energy waste is caused.
To solve this problem, patent CN104904094, CN106787592a discloses a method and apparatus for controlling the power supply of a self-powered device to be reset, which can realize the combined use of the energy generated during the operation of the self-powered electronic device to be reset and the energy generated during the reset. The core idea is as follows: when the generator acts for the first time, the energy is temporarily stored, and the energy storage device is disconnected from the load at the moment through a switch; when the generator is reset, the switch is turned on, and then the two energy generated by the first action and the reset are combined and sent to the load.
Although the technology can solve the problem that the energy of a single action is insufficient to be combined and utilized twice, a switch is required to be introduced into a circuit, so that the difficulty of the circuit is increased. Meanwhile, the circuit module can acquire electric energy only when the generator is reset, the first generation is blocked, the starting time of the processing device is actually occupied (wasted), and the corresponding starting time can be directly expressed as the function delay of the scheme proposed by the patent in realizing; this can have an unnecessary impact for certain applications where timeliness requirements are high. In addition, more importantly, in some cases involving multiple key self-generating switches, because the circuit module must obtain power when the generator is reset, the system cannot perform the necessary key sensor reading to identify which key is pressed when the generator is first triggered, and once the generator is reset, the key is released, and key reading cannot be performed.
In view of this, overcoming the drawbacks of the prior art is a problem to be solved in the art.
[ invention ]
The embodiment of the invention aims to solve the technical problems that the self-power generation control mode is single in the prior art, and the differential power supply possibility of the combination of chip devices under various scenes is not fully exerted. Under the special power supply system of self-generation, an effective mode is lacking, and the problems of working stability and improving working performance in some self-generation scenes in the prior art are overcome.
The invention provides a polarity detection-based self-powered device, which comprises a power generation device, an energy storage device, a polarity detection device and a processing device, wherein the power generation device, the energy storage device and the processing device are sequentially connected, and the polarity detection-based self-powered device is characterized in that:
the motion of the power generation device is reciprocating motion, and the polarity of power generation generated by the motion in the first direction is opposite to that of power generation generated by the motion in the second direction; the first direction movement is a trigger direction, and the second direction is a reset direction; intermittent electric energy generated by the power generation device under at least two external force actions is stored in the energy storage device; the duration time T0 of energy generated by the power generation device under single external force action is smaller than the time interval T1 of two continuous external force actions; the polarity detection device is electrically connected with the power generation device and is used for providing a detection signal for the processing device, and the polarity detection device switches the working mode of the processing device according to the polarity of the current generated by the power generation device, so that when the polarity detection device detects that the power generation module moves in the second direction, the processing device is switched from the working mode 1 to the working mode 2; the working mode 1 and the working mode 2 are preset working modes.
Preferably, the polarity detection device comprises a positive one-way conduction circuit formed by a diode; when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a negative voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a positive voltage, and the input end of the positive unidirectional conduction circuit is connected with the first output port of the power generation device and used for blocking the negative voltage and gating the positive voltage.
Preferably, the positive unidirectional conduction circuit formed by the diode specifically comprises:
the diode D5 is used as an input signal rectifier, wherein the anode of the diode D5 is used as an input end of the polarity detection device and is connected with a first output port of the power generation device; the first output port of the power generation device corresponds to the mode 1 to output negative voltage, and the output port corresponds to the mode 2 to output positive voltage;
the negative electrode of the diode D5 is connected with one end of a resistor R2, wherein the other end of the resistor R2 is connected with one end of a resistor R4 and then is used as the output end of the polarity detection device to be connected with the control port of the processing device; the other end of the resistor R4 is grounded, and forms a voltage division unit with the resistor R2;
And a capacitor C3 is connected in parallel between the diode D5 and the resistor R2, and the other end of the capacitor C3 is grounded to form a high-frequency filtering branch.
Preferably, the polarity detection device comprises a unidirectional conduction circuit formed by a triode, wherein when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a first direction voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a second direction voltage, the input end of the unidirectional conduction circuit is connected with the first output port of the power generation device, and when the first direction voltage is led into the base electrode of the triode, the emitter electrode and the base electrode of the triode are in a cut-off state; wherein, the collector of triode connects the control port of processing apparatus.
Preferably, the polarity detection device comprises a negative one-way conduction circuit formed by a diode;
when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a positive voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a negative voltage, and the input end of the negative one-way conduction circuit is connected with the first output port of the power generation device and used for blocking the positive voltage and gating the negative voltage.
Preferably, the polarity detection device comprises two sets of acquisition components, wherein the first set of acquisition components specifically comprises:
the diode D5 is used as an input signal rectifier, wherein the anode of the diode D5 is used as a first input end of the polarity detection device and is connected with a first output port of the power generation device;
the negative electrode of the diode D5 is connected with one end of a resistor R2, wherein after the other end of the resistor R2 is connected with one end of a resistor R4, the negative electrode of the diode D5 is used as the output end of the polarity detection device to be connected with the first control port of the processing device; the other end of the resistor R4 is grounded, and forms a voltage division unit with the resistor R2;
the second collection assembly specifically comprises:
the diode D4 is used as an input signal rectifier, wherein the anode of the diode D4 is used as a second input end of the polarity detection device and is connected with a second output port of the power generation device;
the negative electrode of the diode D4 is connected with one end of a resistor R1, wherein after the other end of the resistor R1 is connected with one end of a resistor R3, the negative electrode of the diode D4 is used as the output end of the polarity detection device to be connected with the second control port of the processing device; the other end of the resistor R3 is grounded, and forms a voltage division unit with the resistor R1.
Preferably, the polarity detection device outputs a detection signal to the processing device when the power generation module moves in the second direction, so as to trigger the processing device to switch to the working mode 2; the energy consumption of the self-powered device in the operation mode 1 is lower than the energy consumption of the self-powered device in the operation mode 2.
Preferably, the power generation device further comprises a rectifying device, and the rectifying device is located between the power generation device and the energy storage device.
The energy storage device includes:
one or more of capacitance, inductance, energy storage chemical materials, and energy storage mechanisms.
Preferably, the sensor is one or more of a micro switch, a magnetic switch, a reed switch, a tact switch and the like, and is in a trigger state when the power generation device moves in the first movement direction, so as to identify the pressing action of the key.
Preferably, the operation mode 1 is a default mode, the operation mode 2 is an active mode, and in the active mode, a wireless signal receiving and transmitting task is executed through the communication device.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: according to the invention, the polarity characteristics of the power generation device and the external force action drive in the existing self-power generation application are analyzed, and the working modes of the analysis processing device can be further split into different stages to correspond to multiple modes of different generated energy; by arranging the polarity detection device and matching with the preset detection logic in the processing device, the accurate switching of different working modes under different electric energy demands is realized. The power utilization efficiency and the working efficiency of the self-generating application under the special scene are improved, and the problem that a certain working mode fails under the normal starting of the processor in the prior art is solved.
Compared with the patents in the background art, the invention leads the response timeliness and the power generation energy of the whole device to be effectively transmitted in association by dividing the working modes of the processing device, thereby improving the comprehensiveness; the problem of response delay in the prior art is solved, and the problem of failure of a certain working mode of the processor under normal start in the prior art is further solved.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a self-powered device based on polarity detection according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a self-generating device and a generating potential effect provided by an embodiment of the present invention;
FIG. 3 is a schematic view of another power generation device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the polarity of pins and external force action of a power generation device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an operating state of a piezoelectric ceramic power generator according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a self-powered device based on polarity detection according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another self-powered device based on polarity detection corresponding to the polarity detection mode according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a polarity detection device according to an embodiment of the present invention;
fig. 9 is a schematic flow chart of a self-powered method based on polarity detection according to an embodiment of the present invention;
FIG. 10 is a schematic flow chart of a self-powered method based on polarity detection for completing mode switching according to the polarity of power generation according to an embodiment of the present invention;
fig. 11 is a front view of a structure of a self-powered device based on polarity detection according to an embodiment of the present invention;
fig. 12 is a schematic diagram of an external structure of a self-generating multi-key wireless switch according to an embodiment of the present invention;
fig. 13 is a schematic diagram of an internal structure of a self-generating multi-key wireless switch according to an embodiment of the present invention.
[ detailed description ] of the invention
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1:
the invention provides a polarity detection-based self-powered device, the schematic diagram of which is shown in fig. 1, and the self-powered device comprises a power generation device, an energy storage device, a polarity detection device and a processing device, wherein the power generation device, the energy storage device and the processing device are sequentially connected, and the self-powered device is specifically:
The movement of the power generation device is reciprocating movement, and the polarity of power generation generated by the movement in the first direction is opposite to the polarity of power generation generated by the movement in the second direction.
Intermittent electric energy generated by the power generation device under at least two external force actions is stored in the energy storage device, wherein one part of the electric energy in the energy storage device flows into the processing device and is used for maintaining the processing device to work in the mode 1;
one end of the polarity detection device is connected with an electrode of the power generation device, and the other end of the polarity detection device is connected with a control port of the processing device and is used for providing detection signals for the processing device; when the power generation module moves in the second direction, the polarity detection device outputs a detection signal to the processing device, so that the processing device is triggered to switch to the working mode 2.
The power consumption of the self-powered device in the operation mode 1 is lower than that of the self-powered device in the operation mode 2, for example, the operation mode 1 is used to implement a start-up function of the self-powered device and a corresponding response function with low power consumption (for example, receiving and processing sensor signals in embodiment 4 and embodiment 5), and the operation mode 2 is used to implement a main function of the self-powered device, which in the embodiments of the present invention generally refers to a function with high power consumption (for example, transmitting wireless signals in the embodiments of the present invention). The operation mode 1 and the operation mode 2 are also simply referred to as mode 1 and mode 2, respectively, in each embodiment of the present invention.
In an embodiment of the present invention, the energy storage device includes: one or more of capacitance, inductance, energy storage chemical materials, and energy storage mechanisms. For simplicity of description, the energy storage device will be presented primarily in the form of a capacitor in the subsequent embodiments of the invention and in the drawings thereof, but this is not a limitation of the type of energy storage device used in the solution of the invention.
When one end of the polarity detection device is connected with the power generation device, the detection logic specifically switches the working mode of the processing device according to the polarity of the current generated by the power generation device.
As shown in fig. 2, the electric potential generated by the action of the generator M1 described in the system is shown on the right side of fig. 2, and the reciprocating action of the generator generates energy of a part shown in fig. 2 at a time, wherein the energy is characterized by short duration, high peak value and opposite polarity of the energy in the two actions. T1 is a time interval between two external force actions, and in general, the duration T0 of energy generated by a single action is smaller than the action interval T1, and the task of integrating multiple energies to complete one high energy consumption is the main content of the present invention.
In one possible embodiment, the power generation device is embodied as a magneto-electric pulse power generation device with a reset structure, as shown in fig. 3. The device comprises a power generation body consisting of a soft magnet, a permanent magnet and a coil and a reset device consisting of a reset spring. The power generation device generates energy through pressing and resetting under the action of external force, and the corresponding energy schematic diagram is shown in fig. 2. 1 foot in fig. 4: negative electrode and 2 feet: the positive electrode is the specific expression of the first output end and the second output end of the power generation device provided by the embodiment of the invention. The method provided by the embodiment of the invention can be used for continuously using the energy of pressing and resetting twice so as to complete a task with high energy consumption. At this time, the two external force actions are constituted by the pressing external force action and the return external force action from the return spring, respectively.
In another embodiment, the power generation device is a piezoelectric ceramic plate, as shown in fig. 5, and the pressing and resetting of the power generation device respectively generate pulse electric energy, and the corresponding energy schematic diagram is also shown in fig. 2.
In combination with the embodiment of the present invention, for the above example in which the polarity detection is used as the triggering manner of the detection signal, a specific circuit structural design scheme is also provided, as shown in fig. 6, where the detection logic specifically switches the working mode of the processing device according to the polarity of the current generated by the power generation device, the detection device includes two sets of acquisition components, where the first set of acquisition components specifically includes:
the diode D5 is used as an input signal rectifier, wherein the anode of the diode D5 is used as a first input end of the detection device and is connected with a first output port of the power generation device;
the cathode of the diode D5 is connected with one end of a resistor R2, wherein the other end of the resistor R2 is connected with one end of a resistor R4 and then is used as the output end of the detection device to be connected with the first control port of the processing device; the other end of the resistor R4 is grounded, and forms a voltage division unit with the resistor R2;
a capacitor C3 may be further connected in parallel between the diode D5 and the resistor R2, and the other end of the capacitor C3 is grounded to form a high-frequency filtering branch.
The second collection assembly specifically comprises:
the diode D4 is used as an input signal rectifier, wherein the anode of the diode D4 is used as a second input end of the detection device and is connected with a second output port of the power generation device;
the cathode of the diode D4 is connected with one end of a resistor R1, wherein the other end of the resistor R1 is connected with one end of a resistor R3 and then is used as the output end of the detection device to be connected with the second control port of the processing device; the other end of the resistor R3 is grounded, and forms a voltage division unit with the resistor R1;
a capacitor C2 may be further connected in parallel between the diode D4 and the resistor R1, and the other end of the capacitor C2 is grounded to form a high-frequency filtering branch.
The above structure comprising two sets of acquisition components is particularly suitable for a self-generating doorbell example, when the transmitter is pressed by an external force, the processing device in the transmitter determines that the voltage direction is negative through the detection device, and then the mode 1 is started to work, at this time, the mode 1 completes the activation of the processing device in the transmitter and/or the identification of the basic pressing action, when the transmitter is sprung from the pressed state, the processing device in the transmitter determines that the voltage direction is positive through the detection device, and then the mode 2 works, and at this time, the mode 2 completes the transmission of wireless signals between the transmitter and the receiver.
Based on the technical thought provided by the embodiment of the invention and the detection strategy of the mode 2, a more concise and effective circuit structure implementation method also exists, and particularly as shown in fig. 7, the detection device is a positive unidirectional conduction circuit formed by diodes; as can be seen from fig. 7, the positive unidirectional current conducting circuit is similar to the first or second set of acquisition components of the acquisition components described above.
When the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs negative voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs positive voltage, and the input end of the unidirectional conduction circuit is connected with the first output port of the power generation device. The principle is that a designated port (described as a first output port in the scheme) in two output ports of the power generation device is selected, the corresponding designated port is represented as a negative voltage when pressed down and a positive voltage when reset, so that the power generated by a first external force action (i.e. pressing down) can be matched with the positive unidirectional conduction circuit, the detection device is not triggered to output a detection signal, at the moment, the processing device is in a default mode 1 working state after obtaining the power, and the power generated by a second external force action (i.e. resetting or being called bouncing) is output a detection signal to the processing device through the detection device, so that the processing device can switch the working mode from the mode 1 to the mode 2. Compared with the implementation scheme requiring two sets of detection components, the scheme shown in fig. 7 is simpler in structure, the processing device is skillfully utilized to obtain electric energy and then is in the mode 1 by default, the design of the mode 2 is switched when the detection signal is received, and the detection signal is properly triggered by the positive unidirectional conduction circuit, so that the control process of the power generation polarity is realized. Taking the self-generating doorbell as an example, the implementation of the self-generating doorbell in the scheme shown in fig. 7 is described as follows: when the transmitter of the self-generating doorbell is pressed by an external force, the processing device defaults to a mode 1 operation (when the processing device does not receive a trigger signal from the output port of the detection device), wherein the mode 1 can be used for completing the activation of the processing device in the transmitter and the identification of the basic pressing action, when the transmitter is sprung from the pressed state (also described as reset in the embodiment of the invention), the processing device in the transmitter acquires a detection signal (such as a high level) through the detection device, and then enters a mode 2 operation, and at this time, the mode 2 completes the transmission of a wireless signal between the transmitter and the receiver.
It should be emphasized that for convenience of description, one of many ways of matching is used in the present invention. For example, the method is similar to the method that the pressing output is positive voltage, the resetting output is negative voltage, and the equivalent scheme of matching with the negative one-way conduction circuit is adopted, because the equivalent scheme can be designed without creative labor under the teaching of the technical scheme of the invention, the method belongs to the protection scope of the invention, and the details are not repeated here.
In addition to providing the above-mentioned structure of the polarity detection circuit formed by using a diode, the embodiment of the present invention further provides an implementation scheme of an alternative polarity detection circuit, as shown in fig. 8, where the polarity detection device specifically includes a triode to form a unidirectional current circuit, where when the output port of the power generation device corresponds to mode 1 of the processing device, the first output port of the power generation device outputs a first directional voltage, and when the output port of the power generation device corresponds to mode 2, the first output port of the power generation device outputs a second directional voltage, and an input end of the unidirectional current circuit is connected to the first output port of the power generation device, and when the first directional voltage is introduced into the base electrode of the triode, an emitter and a base electrode of the triode are in a cut-off state; wherein, the collector of triode connects the control port of processing apparatus. When the first direction voltage is negative voltage, the above condition is satisfied, and when the first direction voltage is led into the base electrode of the triode, the corresponding triode selects an NPN tube under the condition that the emitter and the base electrode of the triode are in a cut-off state. When the first direction voltage is positive voltage, PNP tube is selected by the corresponding triode under the condition that the emitter and the base of the triode are in a cut-off state when the first direction voltage is led into the base of the triode. The emitter of the triode is usually grounded, the collector of the triode can be connected with an energy storage device, and the static working voltage of the triode is provided through the energy storage device.
Similarly, CMOS transistors may be used, and will not be described in detail herein due to their equivalent substitution.
As a specific application scenario of the embodiment of the present invention, the self-powered device based on polarity detection further includes a wireless transmitting module, where a main function of the self-powered device is to transmit a wireless signal. In a specific embodiment, the wireless transmitting module may be integrally packaged with the processing device into a single chip, or may be implemented by two independent chips.
In combination with the embodiment of the present invention, based on different application scenarios, besides the above-mentioned wireless transmitting module, the self-powered device based on polarity detection may further include a sensor device, where the sensor device is directly or indirectly powered by the electric energy generated by the power generation device when the power generation device moves in the first movement direction. The sensor is one or more of a micro switch, a magnetic switch, a reed switch, a tact switch and the like, and is in a trigger state when the power generation device moves in a first movement direction and is used for identifying the pressing action of the key. A specific description of the sensor device will be specifically described by way of example in embodiment 4 (specifically, a micro switch is taken as an example) and embodiment 5 (specifically, a pressure sensor is taken as an example).
It should be noted that each alternative and preferred implementation of embodiment 1 of the present invention, and the completed combination implementation without the need for creative labor, falls within the protection scope of the present invention. The invention will also be described in the detailed context of specific scenarios in which one or more of the above-described specific implementations are presented by the following specific examples.
Example 2:
in the embodiment of the present invention, after providing a self-powered device based on polarity detection as described in embodiment 1, embodiment 2 of the present invention further provides a self-powered method based on polarity detection, where the self-powered method based on polarity detection may be applied to the device described in embodiment 1. Accordingly, the control process based on the corresponding method in embodiment 1 is also applicable to the embodiment of the present invention. In the application environment of the self-powered method based on polarity detection according to the embodiment of the present invention, as shown in fig. 1, the method specifically includes the steps of:
in step 201, the pulse generator operates in a first direction of motion to generate electrical energy of a first polarity.
Wherein the first motion direction action corresponds to a first external force action in the description environment of the polarity detection circuit shown in fig. 7 in embodiment 1, and the electric energy of the first polarity is represented in embodiment 1 as corresponding electric energy not triggering the detection device to output a detection signal.
In step 202, the processing device enters a preset mode 1 of operation after obtaining electrical energy.
Wherein the energy consumption of the self-powered device in the operation mode 1 is lower than the energy consumption of the self-powered device in the operation mode 2, for example: the working mode 1 is used for realizing the starting function of the self-powered device, and the working mode 2 is used for realizing the main body function of the self-powered device.
In the context of the description of the polarity detection circuit according to embodiment 1, as shown in fig. 7, the processing device may enter mode 1 in a default manner, i.e. without obtaining the detection signal of the polarity detection circuit, only obtaining power (the power supply may be from the rectifying device or may be from the energy storage device at the same time) to enter mode 1.
In the environment corresponding to the description of the polarity detection circuit shown in fig. 6 in embodiment 1, when the mode 1 is entered, the processing device is required to acquire the polarity detection signal of the first set of acquisition components.
In step 203, the pulse generator operates in a second direction of motion to generate electrical energy of a second polarity.
In step 204, the polarity detection device outputs a power polarity detection signal.
Specific implementation may be described with reference to the content related to the second external force action corresponding to the second external force action shown in fig. 6 or fig. 7 in embodiment 1, which is not described herein.
In step 205, the processing device switches the operation mode from mode 1 to mode 2 after obtaining the detection signal of the polarity detection device.
The input end of the polarity detection device is connected to the first output end of the power generation device, and the output end of the polarity detection device is connected with the control port of the processing device; when the output voltage of the first output end of the power generation device is not matched with the polarity of the polarity detection device, the polarity detection device is in an un-triggered state; when the output voltage of the first output end of the power generation device is matched with the polarity of the polarity detection device, the polarity detection device feeds back the detection signal to the processing device.
The embodiment of the invention analyzes the polarity characteristics of the power generation device and the external force action drive in the existing self-generating application, and further can be split into different stages in the working mode of the analysis processing device, and corresponds to multiple modes with different generated energy; by arranging the detection device and matching with the preset detection logic (the polarity detection in the embodiment of the invention is one expression form of the detection logic) in the processing device, the accurate switching of different working modes under different electric energy demands is realized. The power utilization efficiency and the working efficiency of the self-generating application under the special scene are improved, and the problem that a certain working mode fails under the normal starting of the processor in the prior art is solved.
In combination with the embodiment of the present invention, there is a specific application scenario, where the polarity detection apparatus specifically includes a positive unidirectional conduction circuit formed by a diode and/or a triode, and the method includes:
in step 301, the power generation device obtains a first external force action to generate power, and the electrode connected with the polarity detection device outputs a negative voltage, so that the output port of the corresponding polarity detection device connected with the processing device is at a low level; the processing device enters a default mode 1 working state after obtaining the electric energy.
In step 302, the power generation device obtains a second external force action to generate power, and the electrode connected with the polarity detection device outputs a positive voltage, so that the output port of the corresponding polarity detection device connected with the processing device is at a high level; after the processing device obtains the high-level detection signal, the processing device switches the working mode of the processing device from the mode 1 to the mode 2.
The first external force action and the second external force action are merely for descriptive convenience, and they may be represented by two initial external force actions or two external force actions in the process, which are not limited herein.
In combination with the embodiment of the present invention, there is a more specific application scenario, when the self-powered device based on polarity detection is specifically a wireless communication device, the corresponding mode 1 is a basic program operation mode, the mode 2 is a wireless transmission mode, and if the first detection logic is satisfied, a trigger instruction is sent to the processing device, so that the processing device switches from the mode 1 to the mode 2, and the method specifically includes:
After the power generation device receives the first external action, generating electricity for the processing device to be in a basic program running mode, and waiting to be triggered by the second external action;
when the second action is completed, the corresponding detection device determines that the detection result meets the preset detection logic, the processing device is triggered, and the working mode is switched from the basic program running mode to the wireless transmitting mode.
Example 3:
fig. 11 is a schematic structural diagram of an embodiment. The self-generating wireless module comprises a magneto-electric pulse generating device shown in fig. 3 and a circuit structure for detecting the polarity shown in any one of fig. 6-8.
The device comprises a shell 001, a resetting device 002, an action piece 003, a rotating shaft 004, a limiting device 005, a power generation and conversion device action end 006, an energy input terminal 007, a polarity detection device 008, a circuit board 009, a rectifying device 101, an energy storage device 102, a voltage stabilizing device 103 and a communication device 104, wherein the corresponding connection modes are as shown in fig. 11, the action piece 003 is used for receiving external power (pressure part) and completing a first external power generation process by driving the power generation and conversion device action end 006; and the reset of the action piece 003 and the action end 006 of the power generation rotating device is realized by virtue of the torsion spring arranged on the rotating shaft 004, so that the second external power generation process is completed.
The specific implementation process of the embodiment of the invention is as follows:
the external force acts on the action piece 003, the action piece 003 rotates along the rotating shaft 004 under the action of the external force, meanwhile, the action end 006 of the power generation device is driven to act, electric energy in a first direction is generated at the position of the energy input terminal 007, the electric energy is rectified by the rectifying device 101 and then stored in the energy storage device 102, power is supplied to the voltage stabilizing device 103 and the communication device 104, and at the moment, the communication device works in the mode 1 to wait for the next energy input. When the external acting force is withdrawn or the action piece reaches the lowest point, the action end of the power generation device moves reversely under the reverse action of the reset device, electromotive force in a second direction is generated at the energy input terminal 007, part of the electric energy is rectified by the rectifying device 101 and then stored in the energy storage device 102, the electric energy supplies power to the communication device 104 through the voltage stabilizing device 103, and the other part of the electric energy triggers the communication device to switch to the working mode 2 after passing through the polarity detection device 008, so that the communication task is completed.
When the power generation device generates electric energy after first operation, the electric energy is temporarily stored in the energy storage device 102 after passing through the rectifying device 101 and is output to the communication device 104, and the communication device 104 is in a sleep mode; the polarity detection device 008 is associated with the power generation device and the communication device 104, and is used for detecting a second action of the power generation device, switching a working mode of a load after detecting energy generated by a reset action of the power generation device, and entering an active mode to perform a wireless signal receiving and transmitting task through the communication device 104.
The power of the communication device 104 when it normally transmits and receives wireless signals is not lower than 20mW, and at least 10ms is required for completing data transmission and reception. The power of the communication device 104 in the dormant state is not more than 100uW, and the energy generated by a single action of the power generation device is 250uJ and is lower than the minimum energy of 300uJ for completing the normal wireless transceiving task, which is insufficient for completing the wireless transceiving task. The data is only used as a specific example to describe the relation between the constraint conditions of energy and time, and is not used as a mandatory limit of the protection scope of the invention. When the time interval between two actions of the power generation device is smaller than (250- (300-250)) uJ/100 uw=2000 ms, the energy generated by the first action is not exhausted, the energy generated by the second action is superposed in the energy storage device 102, and the sum of the two combined energies is larger than the minimum energy requirement of a normal wireless transceiving task. When the detection means detects the input of the second energy, i.e. the communication means 104 switches into the active mode, the task of transmitting the wireless signal is completed.
One typical application of the self-generating wireless module shown in fig. 11 is a self-generating doorbell. The doorbell emitter comprises the self-generating wireless module, and the module can be provided with any one of the polarity detection devices shown in fig. 6-8, and the working process of the doorbell emitter is illustrated by taking the polarity detection circuit shown in fig. 7 as an example.
The user operates the transmitter, presses the transmitter, and drives the internal power generation device to be pressed;
the power generation device generates electric energy in a first direction;
at the moment, the polarity of the electric energy of the input port of the polarity detection device is negative, the capacitor C3 in the polarity detection device is not charged with the electric energy, and the output of the polarity detection device is low level;
meanwhile, the electric energy generated by the power generation device reaches the energy storage device through rectification;
the processing device is a wireless transmitting device, namely the wireless transmitting device obtains electric energy, and reads the output signal of the polarity detecting device, and detects that the signal is at a low level at the moment, so that the wireless device performs basic operations such as initialization, and the wireless device does not enter a transmitting mode after the operations are completed, but waits for the signal of the polarity detecting device;
the user releases the emitter, and the internal power generation device is reset and bounces under the action of the reset spring;
the power generation device generates electric energy in a second direction;
at this time, the polarity of the electric energy of the input port of the polarity detection device is positive, the internal capacitor C3 of the polarity detection device is charged, and the polarity detection device outputs a high level;
meanwhile, the electric energy generated by the power generation device reaches the energy storage device through rectification;
the processing device detects the output high level of the polarity detection device and enters a wireless transmission mode. The power required for wireless transmission is obtained by combining the first operation and the second operation of the power generation device.
It should be noted that the above-mentioned voltage detection positive electrode and negative electrode of the push-up and pop-up and polarity detection device are determined according to the actual circuit, and the above-mentioned correspondence is merely described in the example. Therefore, the problem that the wireless signal cannot be effectively transmitted to the receiver only by virtue of electric energy generated by pressing action because the distance between the transmitter and the receiver is far can be avoided, and the working stability and the working range of the self-generating doorbell are improved under the condition that the cost is not increased.
Example 4:
fig. 12 and 13 illustrate another embodiment: self-generating multi-key wireless switch structure. The micro-switch sensor comprises a power generation module, a reset spring, a circuit module and a micro-switch sensor. The circuit module comprises: the device comprises a processing device (comprising a wireless transmission module), a polarity detection circuit, a rectifying circuit and a storage circuit. The polarity detection circuit is any one of the polarity detection device circuits shown in fig. 6-8, and the operation thereof will be described below by taking fig. 7 as an example.
Fig. 12 is a structural view of a complete 3-key switch, and fig. 13 is a structural view of a hidden two keys so that the internal structure thereof can be seen. Each key corresponds to two micro-switch sensors for detecting which key is pressed.
The working process is as follows:
the user operates the switch to press the key to drive the internal power generation device to be pressed, and simultaneously the corresponding micro switch is pressed;
the power generation device generates electric energy in a first direction;
at the moment, the polarity of the electric energy of the input port of the polarity detection device is negative, the capacitor C3 in the polarity detection device is not charged with the electric energy, and the output of the polarity detection device is low level;
meanwhile, the electric energy generated by the power generation device reaches the energy storage device through rectification;
the processing device, that is, the wireless transmitting device, obtains the electric energy, and reads the output signal of the polarity detecting device, and detects that the electric energy is at a low level at the moment, so that the wireless device performs basic operations such as initialization, and reads the micro switch sensor to identify which key is pressed. Alternatively, the processing means may also save this information to an internal storage means. After the processing device is operated, the processing device does not enter a transmission mode, but waits for a signal of the polarity detection device;
the user releases the switch, and the internal power generation device resets and bounces under the action of the reset spring, and the micro switch sensor is disconnected.
The power generation device generates electric energy in a second direction;
at this time, the polarity of the electric energy of the input port of the polarity detection device is positive, the internal capacitor C3 of the polarity detection device is charged, and the polarity detection device outputs a high level;
Meanwhile, the electric energy generated by the power generation device reaches the energy storage device through rectification;
the processing device detects the output high level of the polarity detection device and enters a wireless transmission mode. The power required for wireless transmission is obtained by combining the first operation and the second operation of the power generation device. The transmitted data contains information of the micro switch sensor.
From the above description of the process of the multi-key wireless switch, the existing patent CN104904094B introduced in the background art can cause a power supply vacuum period due to the switch control between the energy storage device and the load, and affect the collection of the detection signal of the sensor by the processing device, so that the detection function of step counting cannot be maintained normally.
Example 5:
the polarity detection mode and another application scene of the sensor can be a self-generating wireless pedometer, and the working mode of the self-generating wireless pedometer is that every step is 1 step, so that the signal transmission is completed; at this time, it is proposed that the user steps on the electric energy generated by the one-step pressing power generation device to be used for maintaining the basic sensing detection and processing device operation electric energy of the self-generating wireless pedometer, and the voltage polarity generated by the pressing power generation device is captured by the polarity detection device, so that the processing device is driven to work in the mode 1, namely, the basic sensing detection of the self-generating wireless pedometer is like the data acquisition and processing device operation state of the pressure sensor, when the step is lifted, the reset action of the power generation device occurs, the processing device in the corresponding self-generating wireless pedometer starts the wireless transmission function when confirming that the detection signal meets the mode switching through the corresponding polarity detection device, and step counting data is wirelessly transmitted to the intelligent terminal, so that the whole working process of the self-generating wireless pedometer is completed in the period operation. From the above description of the process of the self-generating wireless pedometer, the existing patent CN104904094B introduced in the background art can cause a power supply vacuum period due to the switch control between the energy storage device and the load, and influence the acquisition of the sensor detection signal by the processing device, so that the detection function of the step counting cannot be normally maintained.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The utility model provides a self-powered device based on polarity detects, its characterized in that, including power generation facility, energy storage device, polarity detection device and processing apparatus, wherein power generation facility, energy storage device and processing apparatus connect gradually, and specifically:
the motion of the power generation device is reciprocating motion, and the polarity of power generation generated by the motion in the first direction is opposite to that of power generation generated by the motion in the second direction; the first direction movement is a trigger direction, and the second direction is a reset direction; intermittent electric energy generated by the power generation device under at least two external force actions is stored in the energy storage device; the duration time T0 of energy generated by the power generation device under single external force action is smaller than the time interval T1 of two continuous external force actions; the polarity detection device is electrically connected with the power generation device and is used for providing a detection signal for the processing device, and the polarity detection device switches the working mode of the processing device according to the polarity of the current generated by the power generation device, so that when the polarity detection device detects that the power generation module moves in the second direction, the processing device is switched from the working mode 1 to the working mode 2 to emit a wireless signal; wherein, the working mode 1 and the working mode 2 are both preset working modes;
The working mode 1 is used for realizing a starting function; and/or, the working mode 1 is used for realizing a response function with low power consumption.
2. The polarity-detection-based self-powered device of claim 1, wherein the polarity detection device includes a positive unidirectional conduction circuit comprised of diodes; when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a negative voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a positive voltage, and the input end of the positive unidirectional conduction circuit is connected with the first output port of the power generation device and used for blocking the negative voltage and gating the positive voltage.
3. The self-powered device based on polarity detection according to claim 2, wherein the positive unidirectional conduction circuit formed by the diode is specifically:
the diode D5 is used as an input signal rectifier, wherein the anode of the diode D5 is used as an input end of the polarity detection device and is connected with a first output port of the power generation device; the first output port of the power generation device corresponds to the mode 1 to output negative voltage, and the output port corresponds to the mode 2 to output positive voltage;
The negative electrode of the diode D5 is connected with one end of a resistor R2, wherein the other end of the resistor R2 is connected with one end of a resistor R4 and then is used as the output end of the polarity detection device to be connected with the control port of the processing device; the other end of the resistor R4 is grounded, and forms a voltage division unit with the resistor R2;
and a capacitor C3 is connected in parallel between the diode D5 and the resistor R2, and the other end of the capacitor C3 is grounded to form a high-frequency filtering branch.
4. The self-powered device based on polarity detection according to claim 1, wherein the polarity detection device comprises a unidirectional conduction circuit formed by a triode, wherein when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a first directional voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a second directional voltage, the input end of the unidirectional conduction circuit is connected with the first output port of the power generation device, and when the first directional voltage is introduced into the base electrode of the triode, the emitter electrode and the base electrode of the triode are in a cut-off state; wherein, the collector of triode connects the control port of processing apparatus.
5. The polarity-detection-based self-powered device of claim 1, wherein the polarity detection device includes a negative unidirectional conduction circuit comprised of diodes;
when the output port of the power generation device corresponds to the mode 1 of the processing device, the first output port of the power generation device outputs a positive voltage, when the output port of the power generation device corresponds to the mode 2, the first output port of the power generation device outputs a negative voltage, and the input end of the negative one-way conduction circuit is connected with the first output port of the power generation device and used for blocking the positive voltage and gating the negative voltage.
6. The polarity detection-based self-powered device of claim 1, wherein the polarity detection device comprises two sets of acquisition assemblies, wherein a first set of acquisition assemblies specifically comprises:
the diode D5 is used as an input signal rectifier, wherein the anode of the diode D5 is used as a first input end of the polarity detection device and is connected with a first output port of the power generation device;
the negative electrode of the diode D5 is connected with one end of a resistor R2, wherein after the other end of the resistor R2 is connected with one end of a resistor R4, the negative electrode of the diode D5 is used as the output end of the polarity detection device to be connected with the first control port of the processing device; the other end of the resistor R4 is grounded, and forms a voltage division unit with the resistor R2;
The second collection assembly specifically comprises:
the diode D4 is used as an input signal rectifier, wherein the anode of the diode D4 is used as a second input end of the polarity detection device and is connected with a second output port of the power generation device;
the negative electrode of the diode D4 is connected with one end of a resistor R1, wherein after the other end of the resistor R1 is connected with one end of a resistor R3, the negative electrode of the diode D4 is used as the output end of the polarity detection device to be connected with the second control port of the processing device; the other end of the resistor R3 is grounded, and forms a voltage division unit with the resistor R1.
7. The polarity-detection-based self-powered device of claim 1, wherein: when the power generation module moves in the second direction, the polarity detection device outputs a detection signal to the processing device, so that the processing device is triggered to switch to the working mode 2; the energy consumption of the self-powered device in the operation mode 1 is lower than the energy consumption of the self-powered device in the operation mode 2.
8. The polarity-detection-based self-powered device of any of claims 1-7, further comprising a rectifying device positioned between the power generation device and the energy storage device;
the energy storage device includes:
One or more of capacitance, inductance, energy storage chemical materials, and energy storage mechanisms.
9. The polarity detection based self-powered device of any of claims 1-7, further comprising a sensor that is powered directly or indirectly by electrical energy generated by the power generation device when moving in the first direction of motion; the sensor is one or more of a micro switch, a magnetic switch, a reed switch, a tact switch and the like, and is in a trigger state when the power generation device moves in a first movement direction and is used for identifying the pressing action of the key.
10. The self-powered device based on polarity detection according to any one of claims 1-7, wherein the operation mode 1 is a default mode, the operation mode 2 is an active mode, and in the active mode, a wireless signal transceiving task is performed by the communication device.
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| CN110045646A (en) * | 2019-04-18 | 2019-07-23 | 佛山职业技术学院 | A kind of more key self-power wireless emitters |
| CN111476989A (en) * | 2020-05-14 | 2020-07-31 | 深圳华京电子科技有限公司 | Self-generating wireless remote control device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109507470B (en) | 2021-11-05 |
| CN109507470A (en) | 2019-03-22 |
| CN114123441A (en) | 2022-03-01 |
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