CN112291770A - Passive power-taking control method, device, equipment, circuit and storage medium - Google Patents
Passive power-taking control method, device, equipment, circuit and storage medium Download PDFInfo
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- CN112291770A CN112291770A CN202011249173.9A CN202011249173A CN112291770A CN 112291770 A CN112291770 A CN 112291770A CN 202011249173 A CN202011249173 A CN 202011249173A CN 112291770 A CN112291770 A CN 112291770A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
Abstract
The embodiment of the invention discloses a passive power-taking control method, a passive power-taking control device, passive power-taking control equipment, a passive power-taking control circuit and a passive power-taking control storage medium. The passive power taking control method comprises the following steps: detecting a signal gap of the radio frequency signal; detecting the current stored energy and generating an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal; and when a signal gap is detected, switching control is carried out on the power taking operation and the communication operation according to the energy storage detection result. The embodiment of the invention realizes the time isolation and the electrical power-taking load switching of the communication process and the power-taking process, thereby reducing the possibility of mutual interference of the communication process and the power-taking process, improving the communication reliability and the power-taking efficiency and integrally improving the system performance.
Description
Technical Field
The embodiment of the invention relates to the field of wireless radio frequency communication, in particular to a passive power-taking control method, device, equipment, circuit and storage medium.
Background
The passive power taking based on Near Field Communication (NFC) is that an NFC device with an internal NFC antenna coil is close to an NFC card reader capable of emitting electromagnetic waves of a specific frequency, receives electromagnetic radiation emitted by the NFC card reader, and obtains electric energy after rectification. The NFC device stores electrical energy to support NFC device communication.
In current NFC equipment, be used for the communication module of communication and be used for the energy storage get the electric module, often can have mutual interference: when more generated electric energy is consumed by the communication module, the stored energy is less and the system load is heavier, the system can be unstable in operation; when most electric energy is stored by the energy storage circuit, the field load of the NFC card reader is too large, the normal communication of the NFC equipment is influenced, and even the NFC equipment cannot be identified by the NFC card reader, so that the system cannot work reliably, and the communication reliability and the energy storage efficiency of the NFC equipment are influenced.
Disclosure of Invention
The embodiment of the invention provides a passive power-taking control method, device, equipment, circuit and storage medium.
In a first aspect, an embodiment of the present invention provides a passive power-taking control method, including:
detecting a signal gap of the radio frequency signal;
detecting the current stored energy and generating an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal;
and when a signal gap is detected, switching control is carried out on the power taking operation and the communication operation according to the energy storage detection result.
Optionally, the switching control of the power taking operation and the communication operation according to the energy storage detection result includes:
if the energy storage detection result meets a set condition, switching the current power taking operation into the communication operation;
and if the energy storage detection result does not meet the set condition, switching the current communication operation into a power-taking operation.
Optionally, if the energy storage detection result satisfies a set condition, switching the current power taking operation into the communication operation includes:
if the energy storage detection result meets a set condition, sending a power taking prohibition signal to a power taking unit, wherein the power taking prohibition signal is used for prohibiting the power taking unit from executing power taking operation, and sending a communication enabling signal to a communication unit, and the communication enabling signal is used for controlling the communication unit to execute communication operation;
if the energy storage detection result does not satisfy the set condition, switch over current communication operation into getting electric operation, include:
and if the energy storage detection result does not meet the set condition, sending a power taking enabling signal to a power taking unit, wherein the power taking enabling signal is used for controlling the power taking unit to execute power taking operation, and sending a communication prohibition signal to a communication unit, and the communication prohibition signal is used for prohibiting the communication unit from executing communication operation.
In a second aspect, an embodiment of the present invention further provides a passive power-taking control circuit, including: the antenna comprises an antenna coil, a communication unit, a power taking unit and a synchronous control processor;
the synchronous control processor is used for detecting a signal gap of a radio frequency signal acquired by the antenna coil, detecting the current stored energy of the power taking unit and generating an energy storage detection result, and switching and controlling the power taking operation of the power taking unit and the communication operation of the communication unit according to the energy storage detection result when the signal gap is detected;
the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained through power taking operation of the radio frequency signal.
Optionally, the passive power-taking control circuit further includes a switch circuit and an enable control module;
the synchronous control processor is used for sending a power taking prohibition signal to a power taking unit if the energy storage detection result meets a set condition when a signal gap is detected, wherein the power taking prohibition signal is used for prohibiting the power taking unit from executing a power taking operation and sending a communication enabling signal to a communication unit, and the communication enabling signal is used for controlling the communication unit to execute a communication operation; or when a signal gap is detected, if the energy storage detection result does not meet a set condition, sending a power getting enabling signal to a power getting unit, wherein the power getting enabling signal is used for controlling the power getting unit to execute power getting operation, and sending a communication prohibition signal to a communication unit, and the communication prohibition signal is used for prohibiting the communication unit from executing communication operation;
the switch circuit is respectively connected with the synchronous control processor, the antenna coil and the energy storage circuit in the power taking unit and is used for connecting the antenna coil and the energy storage circuit in response to a power taking enabling signal or disconnecting the antenna coil and the energy storage circuit in response to a power taking forbidding signal;
the enabling control module is connected with the synchronous control processor and used for responding to a communication enabling signal to turn on the communication unit or responding to a communication forbidding signal to turn off the communication unit.
Optionally, the passive power-taking control circuit further includes a detection circuit;
the detection circuit is respectively connected with the antenna coil and the synchronous control processor and is used for demodulating an original radio-frequency signal received by the antenna coil to obtain an intermediate-frequency signal and transmitting the intermediate-frequency signal to the synchronous control processor;
and the synchronous control processor is used for receiving the intermediate frequency signal and carrying out gap detection on the intermediate frequency signal.
In a third aspect, an embodiment of the present invention further provides a passive power-taking control device, including:
the signal gap detection module is used for detecting the signal gap of the radio frequency signal;
the energy storage detection module is used for detecting the current energy storage and generating an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal;
and the control module is used for switching and controlling the power taking operation and the communication operation according to the energy storage detection result when a signal gap is detected.
In a fourth aspect, an embodiment of the present invention further provides an electronic device, including:
one or more processors;
a memory for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the passive power-taking control method according to any embodiment of the present invention.
In a fifth aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium storing computer instructions, where the computer instructions are configured to enable the computer to execute a passive power-taking control method according to any embodiment.
According to the embodiment of the invention, the current energy storage is detected and the energy storage detection result is generated by detecting the signal gap of the radio frequency signal, and the power taking operation and the communication operation are switched and controlled according to the energy storage detection result when the signal gap is detected, so that the time isolation of the communication process and the power taking process is realized. Different from simultaneous communication in the power taking process, the embodiment of the invention only carries out communication operation or power taking operation in the same time period by carrying out switching control on the power taking operation and the communication operation, realizes the time isolation and the electrical power taking load switching of the power taking process and the communication process, thereby reducing the possibility of mutual interference between the communication process and the power taking process, improving the communication reliability and the power taking efficiency and integrally improving the system performance.
Drawings
Fig. 1 is a flowchart of a passive power-taking control method according to a first embodiment of the present invention;
fig. 2 is a flowchart of a passive power-taking control method in the second embodiment of the present invention;
fig. 3 is a flowchart of a passive power-taking control method in a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a passive power-taking control circuit in a fourth embodiment of the present invention;
fig. 5a is a schematic structural diagram of a passive power-taking control circuit in a fourth embodiment of the present invention;
fig. 5b is a schematic structural diagram of another passive power-taking control circuit according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a passive power-taking control device in a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device to which a passive power-taking control method is applied in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a passive power-taking control method according to a first embodiment of the present invention, which is applicable to a passive power-taking situation based on a radio frequency technology. The method can be executed by a passive power-taking control method device, the device can be realized in a software and/or hardware mode, and can be configured in electronic equipment, and the electronic equipment can be a synchronous control processor in NFC equipment.
As shown in fig. 1, the method specifically includes:
and S110, detecting a signal gap of the radio frequency signal.
The signal gap refers to a portion between the end of the last communication data stream and the beginning of the next communication data stream in the radio frequency signal. Optionally, the portion between the data streams of the radio frequency signal, that is, the data stream gap, may be obtained by detecting a length of the data stream gap and performing timing counting on the data stream gap.
Here, the Radio Frequency signal is emitted by an RFID (Radio Frequency Identification) card reader or an NFC (Near Field Communication) card reader. The radio frequency signal is an electric wave which is modulated and has a certain transmission frequency. An antenna coil in the passive power-taking control circuit receives the radio-frequency signal. And then, the detection circuit in the passive power-taking control circuit detects the radio-frequency signal and demodulates the radio-frequency signal to obtain an intermediate-frequency signal. And then the synchronization control processor receives the intermediate frequency signal.
And S120, detecting the current stored energy and generating an energy storage detection result, wherein the current stored energy is the electric energy consumed by the stored electric energy through communication operation, and the stored electric energy is obtained through the electricity taking operation of the radio frequency signal.
The current energy storage of the electricity taking unit is detected, and whether the current stored electric quantity of the electricity taking unit can ensure that the passive electricity taking control circuit can work normally or not is mainly detected after the stored electric energy is consumed through communication operation. Optionally, the current energy storage of the electricity taking unit may be detected by an energy storage detection algorithm, such as a dual threshold discrimination method, a PID (Proportional Integral Derivative Control) algorithm, and a neural network algorithm.
The stored electric energy is obtained by carrying out power taking operation on the radio frequency signal. The power-taking operation refers to an operation of converting energy carried by a radio-frequency signal received by the antenna coil into electric energy and storing the electric energy by the power-taking unit. The stored electrical energy will be used for the fundamental consumption of communication and passive power-taking control circuits.
Optionally, the energy storage detection result includes that the electric energy is sufficient, that is, the electric quantity stored by the power taking unit can ensure that the passive power taking control circuit works normally; the electric energy is not enough, namely the electric quantity stored by the power taking unit can not ensure the normal work of the passive power taking control circuit.
And S130, when a signal gap is detected, switching control is carried out on the power taking operation and the communication operation according to the energy storage detection result.
Because no communication data is transmitted in the signal gap, when the signal gap is detected, the communication operation and the power taking operation are switched, the integrity of communication can be effectively ensured, namely the ongoing communication operation is not interrupted, and the reliability of communication can be effectively ensured.
When the signal gap is detected, switching control is carried out on power-taking operation and communication operation of the NFC equipment according to the energy storage detection result, so that the passive power-taking control circuit only carries out power-taking operation or communication operation in the same time period. Optionally, the communication operation is carried out when the electric energy is sufficient, the power taking operation is carried out when the electric energy is insufficient, the communication operation is carried out under the condition of sufficient electric energy, and the reliability of communication is guaranteed. The power taking operation is carried out when the electric energy is insufficient, so that the power taking efficiency is ensured.
According to the embodiment of the invention, the current energy storage is detected and the energy storage detection result is generated by detecting the signal gap of the radio frequency signal, and the power taking operation and the communication operation are switched and controlled according to the energy storage detection result when the signal gap is detected, so that the time isolation of the communication process and the power taking process is realized. Different from simultaneous communication in the power taking process, the embodiment of the invention only carries out communication operation or power taking operation in the same time period by carrying out switching control on the power taking operation and the communication operation, realizes the time isolation and the electrical power taking load switching of the power taking process and the communication process, thereby reducing the possibility of mutual interference between the communication process and the power taking process, improving the communication reliability and the power taking efficiency and integrally improving the system performance.
Example two
Fig. 2 is a flowchart of a passive power-taking control method in an embodiment two of the present invention, which is further optimized based on the embodiment one, and optionally, an operation "switching control of the power-taking operation and the communication operation according to the energy storage detection result" is refined to "if the energy storage detection result satisfies a set condition, the current power-taking operation is switched to the communication operation; and if the energy storage detection result does not meet the set condition, switching the current communication operation into power taking operation.
As shown in fig. 2, the method includes:
and S210, detecting a signal gap of the radio frequency signal.
S220, detecting current stored energy and generating an energy storage detection result, wherein the current stored energy is electric energy consumed by stored electric energy through communication operation, and the stored electric energy is obtained through power taking operation of the radio frequency signal.
And S230, when a signal gap is detected, if the energy storage detection result meets a set condition, switching the current power taking operation into the communication operation.
If the energy storage detection result meets the set condition, the electric energy stored by the energy storage circuit in the current power taking unit can ensure that the passive power taking control circuit works normally, and the specific set condition needs to be determined according to the actual requirement of the working voltage of the passive power taking control circuit.
Illustratively, when the energy storage detection algorithm is a dual-threshold discrimination method, since the dual-threshold discrimination method adopts the schmitt trigger principle, when the working range of the energy storage circuit is 2.7V-3.0V, a high-voltage threshold and a low-voltage threshold can be set respectively according to actual conditions. Here, the high voltage threshold in the dual threshold discrimination method is set to 2.9V, and the low voltage threshold is set to 2.8V. When the voltage of the energy storage circuit in the power taking unit is higher than the high voltage threshold, namely the energy storage detection result meets the set condition, the electric energy stored by the current energy storage circuit can ensure that the passive power taking control circuit works normally; correspondingly, when the voltage of the energy storage circuit is lower than the low voltage threshold value, namely the energy storage detection result does not meet the set condition, the electric energy stored by the current energy storage circuit cannot ensure the normal work of the passive power taking control circuit; when the voltage of the energy storage circuit is between the low voltage threshold and the high voltage threshold, the energy storage detection result is consistent with the energy storage detection result at the previous moment. That is, if the energy storage detection result at the previous moment meets the set condition, the energy storage detection result obtained at the current moment meets the set condition; and if the energy storage detection result at the previous moment does not meet the set condition, the energy storage detection result obtained at the current moment is not met with the set condition. And the synchronous control processor detects the voltage of the energy storage circuit at set time intervals and obtains an energy storage detection result according to the voltage. The set time interval may be 1 second, which is not limited herein and may be determined according to actual conditions. In this example, when the synchronous control processor detects that the voltage of the energy storage circuit exceeds 2.9V, it means that the energy storage detection result satisfies the set condition.
When the electric quantity stored in the energy storage circuit can ensure that the passive power-taking control circuit works normally, the power-taking unit does not need to carry out power-taking operation again, the current power-taking operation is switched to communication operation, and the passive power-taking control circuit only carries out communication operation at the moment.
S240, when the signal gap is detected, if the energy storage detection result does not meet the set condition, the current communication operation is switched to power-taking operation.
If the energy storage detection result does not meet the set condition, the electric quantity stored by the energy storage circuit is not enough to ensure the normal work of the passive power taking control circuit, and if the communication operation is carried out at the moment, the communication performance is reduced, which mainly shows that the time delay is prolonged and the communication reliability is reduced. Under the condition, the power taking unit is preferentially controlled to carry out power taking operation until the energy storage detection result meets the set condition, and then communication operation is carried out.
In the embodiment of the invention, if the energy storage detection result does not meet the set condition, the current communication operation is switched to the power taking operation, so that the power taking efficiency is improved; moreover, the power taking operation and the communication operation are switched in the radio frequency signal interval, so that the integrity of the communication process is ensured; through if the energy storage testing result satisfies the set condition, switch over the current operation of getting electricity into communication operation, when the energy storage testing result satisfies the set condition, switch over to communication operation, for the communication process provides sufficient electric energy deposit, improved the reliability of communication, avoided communication process and get the mutual interference of electricity process, from holistic performance that has improved the system.
EXAMPLE III
Fig. 3 is a flowchart of a passive power-taking control method in a third embodiment of the present invention, where the third embodiment is further optimized on the basis of the third embodiment, and optionally, an operation "if the energy storage detection result satisfies a set condition, the current power-taking operation is switched to the communication operation" is refined to "if the energy storage detection result satisfies the set condition, a power-taking prohibition signal is sent to a power-taking unit, the power-taking prohibition signal is used to prohibit the power-taking unit from executing the power-taking operation, a communication enabling signal is sent to the communication unit, and the communication enabling signal is used to control the communication unit to execute the communication operation".
Optionally, the operation "if the energy storage detection result does not satisfy the set condition, the current communication operation is switched to the power taking operation" is refined to "if the energy storage detection result does not satisfy the set condition, a power taking enable signal is sent to a power taking unit, the power taking enable signal is used for controlling the power taking unit to execute the power taking operation, a communication prohibition signal is sent to the communication unit, and the communication prohibition signal is used for prohibiting the communication unit from executing the communication operation".
As shown in fig. 3, the method includes:
and S310, detecting a signal gap of the radio frequency signal.
And S320, detecting the current stored energy and generating an energy storage detection result, wherein the current stored energy is the electric energy consumed by the stored electric energy through communication operation, and the stored electric energy is obtained through the electricity taking operation of the radio frequency signal.
S330, when the signal gap is detected, whether the energy storage detection result meets the set condition is judged. If the judgment result is yes, that is, the energy storage detection result meets the set condition, the process jumps to the step S341, otherwise, if the judgment result is no, that is, the energy storage detection result does not meet the set condition, the process jumps to the step S342.
And S341, sending a power taking prohibition signal to a power taking unit, wherein the power taking prohibition signal is used for prohibiting the power taking unit from executing a power taking operation, and sending a communication enabling signal to a communication unit, and the communication enabling signal is used for controlling the communication unit to execute a communication operation.
The synchronous control processor sends a power taking prohibition signal to the power taking unit to prohibit the power taking unit from executing power taking operation, and the process can be realized in a hardware mode or a software mode.
Exemplarily, the hardware manner is specifically: the switch circuit between the antenna coil and the energy storage circuit in the power taking unit is controlled to be closed through the power taking forbidding signal, so that the connection between the power taking unit and the antenna coil is disconnected, and the power taking unit is forbidden to execute the power taking operation. The software mode is that the power taking unit is always connected with the antenna coil, the synchronous control processor sends a power taking forbidding signal to the power taking unit, and the power taking unit automatically stops power taking operation after receiving the power taking forbidding signal. Correspondingly, the synchronization control processor sends the communication enabling signal to the communication unit to control the communication unit to execute the communication operation, which can also be implemented by the above hardware mode and software mode, and is not described herein again. Optionally, the synchronization control processor sends a communication enable signal to an enable control module in the communication unit, and the communication unit performs a communication operation after receiving the communication enable signal.
When the energy storage detection result meets the set condition, the electricity taking unit is forbidden to carry out electricity taking operation, and meanwhile, the communication unit is controlled to carry out communication operation, so that only communication operation is carried out when the electric quantity stored in the energy storage circuit in the electricity taking unit is sufficient, the time isolation and the electrical electricity taking load switching of the communication operation and the electricity taking operation are realized, and the mutual interference between the communication process and the electricity taking process is reduced.
And S342, sending a power getting enabling signal to a power getting unit, wherein the power getting enabling signal is used for controlling the power getting unit to execute power getting operation, and sending a communication prohibiting signal to a communication unit, and the communication prohibiting signal is used for prohibiting the communication unit from executing communication operation.
If the energy storage detection result does not meet the set condition, the electric quantity stored by the energy storage circuit in the electricity taking unit is insufficient, at the moment, the synchronous control processor sends an electricity taking enabling signal to the electricity taking unit to control the electricity taking unit to execute electricity taking operation, and the process can be realized in a hardware mode or a software mode.
Exemplarily, the hardware manner is specifically: the switch circuit between the antenna coil and the energy storage circuit in the power taking unit is controlled to be opened through the power taking enabling signal, and the power taking unit is further connected with the antenna coil so as to control the power taking unit to execute power taking operation; the software mode is that the power taking unit is always connected with the antenna coil, the synchronous control processor sends a power taking enabling signal to the power taking unit, and the power taking unit automatically executes power taking operation after receiving the power taking enabling signal. Correspondingly, the synchronization control processor sends a communication prohibition signal to the communication unit to prohibit the communication unit from executing the communication operation, which may also be implemented by the above hardware manner and software manner, and will not be described herein again. Optionally, the synchronization control processor sends a communication prohibition signal to an enable control module in the communication unit, and the communication unit stops the communication operation after receiving the communication prohibition signal.
The purpose of the power-taking operation is to store more electric energy for the passive power-taking control circuit to work normally. The communication operation can consume electric energy, and under the condition that the storage electric quantity of an energy storage circuit in the power taking unit is insufficient, the reliable communication can not be guaranteed. At the moment, the electricity taking efficiency can be effectively improved only by executing the electricity taking operation, so that the electricity taking process is rapidly completed, and sufficient electric energy is stored.
According to the embodiment of the invention, the enabling signal or the prohibiting signal is sent to the power taking unit and the communication unit according to whether the energy storage detection result meets the set condition, so that the switching between the power taking operation and the communication operation is controlled, the possibility of mutual interference between the communication process and the power taking process is reduced, the communication reliability and the power taking efficiency are improved, and the system performance is integrally improved.
Example four
Fig. 4 is a schematic structural diagram of a passive power-taking control circuit in a fourth embodiment of the present invention, which is applicable to a case of performing passive power-taking based on a radio frequency technology, where the passive power-taking control circuit is disposed in an NFC device.
As shown in fig. 4, the passive power-taking control circuit includes: an antenna coil 410, a communication unit 420, a power-taking unit 430, and a synchronization control processor 440.
The antenna coil 410 is respectively connected to the communication unit 420 and the power-taking unit 430, the communication unit 420 is connected to the synchronous control processor 440, and the power-taking unit 430 is connected to the synchronous control processor 440.
The synchronous control processor 440 is configured to detect a signal gap of the radio frequency signal acquired by the antenna coil 410, detect the current stored energy of the power taking unit 430, and generate an energy storage detection result, and when the signal gap is detected, perform switching control on the power taking operation of the power taking unit 430 and the communication operation of the communication unit 420 according to the energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained through power taking operation of the radio frequency signal.
Optionally, the synchronous control processor 440 is configured to, when a signal gap is detected, send a power getting prohibition signal to the power getting unit 430 if the energy storage detection result meets a set condition, where the power getting prohibition signal is used to prohibit the power getting unit 430 from executing a power getting operation, and send a communication enabling signal to the communication unit 420, and the communication enabling signal is used to control the communication unit 420 to execute a communication operation; or, when a signal gap is detected, if the energy storage detection result does not satisfy a set condition, sending an electricity getting enable signal to an electricity getting unit 430, where the electricity getting enable signal is used to control the electricity getting unit 430 to execute an electricity getting operation, and sending a communication prohibition signal to a communication unit 420, where the communication prohibition signal is used to prohibit the communication unit 420 to execute a communication operation.
Optionally, the passive power-taking control circuit further includes a switch circuit and an enable control module, where the switch circuit is connected to the synchronous control processor 440, the antenna coil 410 and the energy storage circuit in the power-taking unit 430, and is configured to connect the antenna coil 410 and the energy storage circuit in response to a power-taking enable signal, or disconnect the connection between the antenna coil 410 and the energy storage circuit in response to a power-taking disable signal.
Fig. 5a is a schematic structural diagram of another passive power-taking control circuit in the fourth embodiment of the present invention. On the whole, the passive power-taking control circuit comprises an antenna coil, and a communication unit and a power-taking unit which are respectively connected with the antenna coil. The communication unit comprises an enabling control module and an RFID circuit which are connected. The power taking unit comprises a power taking circuit connected with the antenna coil, a detection circuit and an energy storage circuit connected with the power taking circuit, and a synchronous control processor connected with the power taking circuit, the detection circuit and the energy storage circuit. The power taking circuit comprises a rectifying circuit, a switch circuit K1, a diode D2 and a resistor R1 which are connected in sequence.
Although the rectifying circuit and the detecting circuit are always connected to the antenna coil, they are light-weight loads and have a slight influence on performance; the tank circuit is a heavy load and can have a severe impact on performance. Therefore, the switch circuit K1 can be disposed after the rectifying circuit and the detector circuit and before the tank circuit, and the power supply enabling and disabling can be realized by controlling the switch circuit.
As shown in fig. 5a, the switching circuit K1 is connected to the antenna coil through a rectifying circuit, and is connected to the tank circuit through a diode D2 and a resistor R1. Radio frequency signals collected by the antenna coil are rectified by the rectifying circuit, and then enter the energy storage circuit for storing electric energy through the diode D2 and the resistor R1. The rectifying circuit may be a rectifying bridge composed of 4 diodes D1, and is used for converting ac power into dc power. The energy storage circuit is a parallel circuit of a resistor R3 and a polar capacitor C2.
Optionally, the switch circuit K1 is a Micro-electromechanical System (MEMS) Micro-Mechanical normally closed radio frequency switch circuit, and is characterized in that the switch is in a closed and conductive state, i.e. a "passive normally closed" state when no working power supply is available. As shown in fig. 5a, the RF terminal 1P _ RF of the switch circuit K1 is connected to the output terminal of the rectifier circuit, the normally closed terminal 1T _ NC is connected to the input terminal of the diode D2, and the terminal SW is connected to the output terminal of the synchronization control processor.
With reference to fig. 4 and 5a, an enabling control module is connected to the synchronization control processor 440, and is configured to turn on the communication unit 420, specifically, the RFID circuit in the communication unit 420, in response to a communication enabling signal, or turn off the communication unit 420, specifically, the RFID circuit in the communication unit 420, in response to a communication disabling signal. Optionally, the enable control module is disposed in the communication unit 420. Wherein the RFID circuit is configured to perform a communication operation.
Optionally, the synchronous control processor 440 may be disposed in the power taking unit 430 or disposed outside the power taking unit 430.
Optionally, the detection circuit is respectively connected to the antenna coil 410 and the synchronization control processor 440, and is configured to demodulate an original radio frequency signal received by the antenna coil 410 to obtain an intermediate frequency signal, and transmit the intermediate frequency signal to the synchronization control processor 440.
Optionally, as shown in fig. 5a, the detector circuit includes a parallel circuit of a diode D3 and a capacitor C1 resistor R2 connected together. The input end of the detector circuit is connected to the antenna coil 410 through a rectifier circuit, and the output end of the detector circuit is connected to the synchronization control processor 440.
The synchronization control processor 440 is configured to receive the intermediate frequency signal and perform gap detection on the intermediate frequency signal. Specifically, the synchronous control processor 440 is configured to receive the intermediate frequency signal output by the detector circuit and the tank signal (e.g., the voltage of the tank circuit) output by the tank circuit. When a signal gap of the intermediate frequency signal is detected, if the energy storage detection result of the energy storage signal meets a set condition, an energy taking prohibition signal is sent to a switch circuit in the energy taking unit, and an energy communication signal is sent to an enable control module in the communication unit; and if the energy storage detection result of the energy storage signal does not meet the set condition, transmitting an electricity taking enabling signal to a switching circuit in the electricity taking unit, and transmitting a communication forbidding signal to an enabling control module in the communication unit.
In the embodiment of the invention, the antenna coil is used for collecting radio frequency signals, the detection circuit is used for demodulating the original radio frequency signals received by the antenna coil to obtain intermediate frequency signals, and the intermediate frequency signals are transmitted to the synchronous control processor; the synchronous control processor carries out gap detection on the signal, detects the current energy storage when the synchronous control processor detects the signal gap of the signal, generates an energy storage detection result, carries out switching control on power taking operation and communication operation according to the energy storage detection result, realizes the isolation of the communication process and the power taking process in time and the power taking load switching in electricity, thereby reducing the possibility of mutual interference of the communication process and the power taking process, improving the communication reliability and the power taking efficiency, and improving the system performance on the whole.
Fig. 5b is a schematic structural diagram of another passive power-taking control circuit in the fourth embodiment of the present invention. Unlike the circuit configuration shown in fig. 5a, a power supply circuit and other peripheral circuits are added, and the configuration of the synchronization control processor 440 is refined.
Specifically, the power supply circuit is a direct current-direct current (DC-DC) converter circuit or an LDO (low dropout regulator). The input end of the power supply circuit is connected with the energy storage circuit, and the output end is connected with the synchronous control processor 440. The energy storage circuit provides energy storage power to the power supply circuit, and the power supply circuit provides working power to the synchronous control processor 440, so that the whole circuit is powered.
The synchronous control processor 440 is specifically an MCU (micro controller Unit) having internal modules, mainly including an MCU core, an RFID module, and an I/O module.
The I/O module receives the intermediate frequency signal sent by the detection circuit and the energy storage signal sent by the energy storage circuit through the I/O pin, transmits the received signals to the MCU core, and controls the enabling or disabling of the RFID module through an internal trigger mechanism of the MCU core. Specifically, when the MCU core detects a signal gap and the energy storage detection result meets a set condition, the I/O module sends a power taking prohibition signal to the switch circuit, and simultaneously sends an RFID enabling signal to the RFID module, so that the RFID module sends a communication enabling signal to an enabling control module in the communication unit. When the MCU core detects a signal gap and the energy storage detection result does not meet a set condition, the I/O module sends a power-taking enabling signal to the switch circuit, and simultaneously the I/O module sends an RFID prohibiting signal to the RFID module, so that the RFID module sends a communication prohibiting signal to the enabling control module in the communication unit.
In a specific embodiment, the passive power-taking control circuit can be packaged in an RFID passive tag or a passive RFID lock and is used for anti-counterfeiting, fidelity and verification of high-grade consumer products such as cigarettes and wine.
It is to be noted that fig. 5a and 5b only illustrate alternative implementations of the passive power-taking control circuit, and do not limit other implementations of the passive power-taking control circuit.
EXAMPLE five
Fig. 6 is a schematic structural diagram of a passive power-taking control device in a fifth embodiment of the present invention, which is applicable to a passive power-taking situation based on a radio frequency technology. The apparatus may be implemented by software and/or hardware, and may be configured in an electronic device.
As shown in fig. 6, the apparatus 600 may include: a signal gap detection module 610, a stored energy detection module 620 and a control module 630.
A signal gap detection module 610, configured to detect a signal gap of the radio frequency signal;
the energy storage detection module 620 is configured to detect current energy storage and generate an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal;
and the control module 630 is configured to switch and control the power taking operation and the communication operation according to the energy storage detection result when the signal gap is detected.
According to the embodiment of the invention, the current energy storage is detected and the energy storage detection result is generated by detecting the signal gap of the radio frequency signal, and the power taking operation and the communication operation are switched and controlled according to the energy storage detection result when the signal gap is detected, so that the time isolation of the communication process and the power taking process is realized. Different from simultaneous communication in the power taking process, the embodiment of the invention only carries out communication operation or power taking operation in the same time period by carrying out switching control on the power taking operation and the communication operation, realizes the time isolation and the electrical power taking load switching of the power taking process and the communication process, thereby reducing the possibility of mutual interference between the communication process and the power taking process, improving the communication reliability and the power taking efficiency and integrally improving the system performance.
Optionally, the control module 630 includes: a first control submodule and a second control submodule.
The first control submodule is used for switching the current power-taking operation into the communication operation if the energy storage detection result meets a set condition when a signal gap is detected; and the second control submodule is used for switching the current communication operation into the power-taking operation if the energy storage detection result does not meet the set condition when the signal gap is detected.
Optionally, the first control submodule includes a first control unit, and is specifically configured to send a power-taking prohibition signal to the power-taking unit if the energy storage detection result satisfies a set condition when detecting a signal gap, where the power-taking prohibition signal is used to prohibit the power-taking unit from executing a power-taking operation, and send a communication enable signal to the communication unit, where the communication enable signal is used to control the communication unit to execute a communication operation.
Optionally, the second control submodule includes a second control unit, and is specifically configured to send a power-taking enable signal to the power-taking unit if the energy storage detection result does not satisfy the set condition when detecting the signal gap, where the power-taking enable signal is used to control the power-taking unit to execute a power-taking operation, and send a communication prohibition signal to the communication unit, where the communication prohibition signal is used to prohibit the communication unit from executing a communication operation.
The passive power-taking control device provided by the embodiment of the invention can execute the passive power-taking control method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the passive power-taking control method.
EXAMPLE six
The invention also provides an electronic device and a readable storage medium according to the embodiment of the invention.
Fig. 7 is a schematic structural diagram of an electronic device implementing a passive power-taking control method according to an embodiment of the present invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present application that are described and/or claimed herein.
As shown in fig. 7, the electronic apparatus includes: one or more processors 710, a memory 720, and interfaces for connecting the various components, including a high-speed interface and a low-speed interface. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions for execution within the electronic device, including instructions stored in or on the memory to display graphical information of a GUI on an external input/output apparatus (such as a display device coupled to the interface). In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple electronic devices may be connected, with each device providing portions of the necessary operations (e.g., as an array of devices, a set of blades, or a multi-processor system). One processor 710 is illustrated in fig. 7.
The memory 720, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to a passive power-taking control method in the embodiments of the present application (for example, the signal gap detection module 610, the energy storage detection module 620, and the control module 630 shown in fig. 6). The processor 710 executes various functional applications and data processing of the electronic device by running non-transitory software programs, instructions and modules stored in the memory 720, that is, implements a passive power-taking control method in the above method embodiments.
The memory 720 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by use of an electronic device implementing a passive power-taking control method, and the like. Further, the memory 720 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 720 may optionally include memory located remotely from processor 710, which may be connected over a network to an electronic device performing a passive power-take control method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The electronic device that executes the passive power-taking control method may further include: an input device 730 and an output device 740. The processor 710, the memory 720, the input device 730, and the output device 740 may be connected by a bus or other means, such as the bus connection in fig. 7.
The input device 730 may receive input numeric or character information and generate key signal inputs related to user settings and function control of an electronic apparatus performing a passive power-on control method, such as a touch screen, keypad, mouse, track pad, touch pad, pointer stick, one or more mouse buttons, track ball, joystick, or other input device. The output devices 740 may include a display device, auxiliary lighting devices (e.g., LEDs), tactile feedback devices (e.g., vibrating motors), and the like. The display device may include, but is not limited to, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, and a plasma display. In some implementations, the display device can be a touch screen.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs (also known as programs, software applications, or code) include machine instructions for a programmable processor, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, Programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), the internet, and blockchain networks.
The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and the present invention is not limited thereto as long as the desired results of the technical solutions disclosed in the present application can be achieved.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A passive power-taking control method is characterized by comprising the following steps:
detecting a signal gap of the radio frequency signal;
detecting the current stored energy and generating an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal;
and when a signal gap is detected, switching control is carried out on the power taking operation and the communication operation according to the energy storage detection result.
2. The method according to claim 1, wherein the switching control of the power taking operation and the communication operation according to the energy storage detection result comprises:
if the energy storage detection result meets a set condition, switching the current power taking operation into the communication operation;
and if the energy storage detection result does not meet the set condition, switching the current communication operation into a power-taking operation.
3. The method according to claim 2, wherein switching a current power-taking operation to the communication operation if the energy storage detection result satisfies a set condition comprises:
if the energy storage detection result meets a set condition, sending a power taking prohibition signal to a power taking unit, wherein the power taking prohibition signal is used for prohibiting the power taking unit from executing power taking operation, and sending a communication enabling signal to a communication unit, and the communication enabling signal is used for controlling the communication unit to execute communication operation;
if the energy storage detection result does not satisfy the set condition, switch over current communication operation into getting electric operation, include:
and if the energy storage detection result does not meet the set condition, sending a power taking enabling signal to a power taking unit, wherein the power taking enabling signal is used for controlling the power taking unit to execute power taking operation, and sending a communication prohibition signal to a communication unit, and the communication prohibition signal is used for prohibiting the communication unit from executing communication operation.
4. A passive power-taking control circuit is characterized by comprising: the antenna comprises an antenna coil, a communication unit, a power taking unit and a synchronous control processor;
the synchronous control processor is used for detecting a signal gap of a radio frequency signal acquired by the antenna coil, detecting the current stored energy of the power taking unit and generating an energy storage detection result, and switching and controlling the power taking operation of the power taking unit and the communication operation of the communication unit according to the energy storage detection result when the signal gap is detected;
the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained through power taking operation of the radio frequency signal.
5. The circuit of claim 4, further comprising a switching circuit and an enable control module;
the synchronous control processor is used for sending a power taking prohibition signal to a power taking unit if the energy storage detection result meets a set condition when a signal gap is detected, wherein the power taking prohibition signal is used for prohibiting the power taking unit from executing a power taking operation and sending a communication enabling signal to a communication unit, and the communication enabling signal is used for controlling the communication unit to execute a communication operation; or when a signal gap is detected, if the energy storage detection result does not meet a set condition, sending a power getting enabling signal to a power getting unit, wherein the power getting enabling signal is used for controlling the power getting unit to execute power getting operation, and sending a communication prohibition signal to a communication unit, and the communication prohibition signal is used for prohibiting the communication unit from executing communication operation;
the switch circuit is respectively connected with the synchronous control processor, the antenna coil and the energy storage circuit in the power taking unit and is used for connecting the antenna coil and the energy storage circuit in response to a power taking enabling signal or disconnecting the antenna coil and the energy storage circuit in response to a power taking forbidding signal;
the enabling control module is connected with the synchronous control processor and used for responding to a communication enabling signal to turn on the communication unit or responding to a communication forbidding signal to turn off the communication unit.
6. The circuit of claim 4 or 5, further comprising a detector circuit;
the detection circuit is respectively connected with the antenna coil and the synchronous control processor and is used for demodulating an original radio-frequency signal received by the antenna coil to obtain an intermediate-frequency signal and transmitting the intermediate-frequency signal to the synchronous control processor;
and the synchronous control processor is used for receiving the intermediate frequency signal and carrying out gap detection on the intermediate frequency signal.
7. The utility model provides a passive power-taking control device which characterized in that, the device includes:
the signal gap detection module is used for detecting the signal gap of the radio frequency signal;
the energy storage detection module is used for detecting the current energy storage and generating an energy storage detection result; the current stored energy is electric energy which is consumed by stored electric energy through communication operation, and the stored electric energy is obtained by carrying out power taking operation on the radio frequency signal;
and the control module is used for switching and controlling the power taking operation and the communication operation according to the energy storage detection result when a signal gap is detected.
8. The apparatus of claim 7, wherein the control module comprises:
the first control submodule is used for switching the current power-taking operation into the communication operation if the energy storage detection result meets a set condition when a signal gap is detected;
and the second control submodule is used for switching the current communication operation into the power-taking operation if the energy storage detection result does not meet the set condition when the signal gap is detected.
9. An electronic device, characterized in that the device comprises:
one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are enabled to implement a passive power-taking control method according to any one of claims 1-3.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the passive power-take control method of any one of claims 1-3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206911A (en) * | 2021-04-28 | 2021-08-03 | 深圳市立健达精密工业有限公司 | NFC passive electricity-taking and light-emitting mobile phone shell circuit |
| WO2023272443A1 (en) * | 2021-06-28 | 2023-01-05 | Oppo广东移动通信有限公司 | Wireless communication method and device |
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2020
- 2020-11-10 CN CN202011249173.9A patent/CN112291770A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206911A (en) * | 2021-04-28 | 2021-08-03 | 深圳市立健达精密工业有限公司 | NFC passive electricity-taking and light-emitting mobile phone shell circuit |
| WO2023272443A1 (en) * | 2021-06-28 | 2023-01-05 | Oppo广东移动通信有限公司 | Wireless communication method and device |
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