CN113133098B - Positioning circuit, positioning method and terminal - Google Patents
Positioning circuit, positioning method and terminal Download PDFInfo
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- CN113133098B CN113133098B CN202110394631.6A CN202110394631A CN113133098B CN 113133098 B CN113133098 B CN 113133098B CN 202110394631 A CN202110394631 A CN 202110394631A CN 113133098 B CN113133098 B CN 113133098B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application relates to a positioning circuit, a positioning method and a terminal, wherein the positioning circuit is applied to the terminal and comprises the following components: the energy conversion circuit and the control circuit are connected with the energy conversion circuit; the control circuit is used for sending a positioning switching instruction to the energy conversion circuit when detecting that the terminal meets a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time; the energy conversion circuit is used for providing electric energy for the positioning module when a positioning switching instruction is acquired so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit. The positioning circuit provided by the application reduces the dependence on the power supply of the terminal in the positioning process, and can realize real-time positioning under any condition.
Description
Technical Field
The present application relates to the field of terminal positioning technologies, and in particular, to a positioning circuit, a positioning method, and a terminal.
Background
With the development of electronic technology, more and more electronic devices have a positioning function, and how to realize real-time and accurate positioning of a mobile phone, as a necessary electronic product in the life of people, becomes an important application requirement of users on the mobile phone at present.
Currently, the mobile phone positioning technology is divided into two types: one is based on dedicated satellites and the other is based on the base station of the service provider. In any positioning mode, the principle is as follows: when the mobile phone is in a power-on state, a positioning signal is sent to surrounding base stations or satellites at millisecond-level frequency, the base stations or the satellites receive the positioning signal sent by the mobile phone and then measure and calculate the distance from the mobile phone to each base station or each satellite, and then the specific position of the mobile phone is calculated according to each distance by combining with a corresponding positioning algorithm, so that the mobile phone positioning is realized.
However, when the mobile phone is in the power-off state, neither the base station nor the satellite can continuously position the mobile phone.
Disclosure of Invention
In view of the above, there is a need to provide a positioning circuit, a method and a terminal, which can continue positioning even when the battery power of the terminal is about to be exhausted or the terminal is about to be powered off.
In a first aspect, a positioning circuit is applied to a terminal, where the terminal includes an antenna, a positioning module, and a battery, and the positioning circuit includes: the energy conversion circuit and the control circuit are connected with the energy conversion circuit;
the control circuit is used for sending a positioning switching instruction to the energy conversion circuit when detecting that the terminal meets a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time;
the energy conversion circuit is used for providing electric energy for the positioning module when the positioning switching instruction is acquired so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit.
In a second aspect, a positioning method is applied to the positioning circuit of the first aspect, and the positioning method includes:
the control circuit sends a positioning switching instruction to the energy conversion circuit when detecting that the terminal meets a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time;
the energy conversion circuit provides electric energy for the positioning module when acquiring the positioning switching instruction so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit.
In a third aspect, a terminal is characterized in that the terminal comprises the positioning circuit of the first aspect.
According to the positioning circuit, the positioning method and the terminal, the energy conversion circuit arranged in the positioning circuit can convert radio-frequency signals received by the antenna into electric energy, and the energy conversion circuit can replace an original battery in the terminal to provide the electric energy for the positioning module when the control circuit detects that the electric quantity of the battery of the terminal is about to be exhausted and/or the terminal is about to be turned off, so that the positioning module continues to work, and the problem that the positioning module cannot continue to be positioned when the terminal is in a turned-off state due to the fact that the positioning module cannot normally work due to power failure can be avoided. Therefore, the positioning circuit provided by the embodiment reduces the dependence on the power supply of the terminal in the positioning process of the terminal, and can realize real-time positioning under any condition. In addition, the antenna can collect radio frequency signals from any source in space, so that the energy conversion circuit can fully utilize the existing signal resources in space to perform electric energy conversion, the problem of insufficient radio frequency energy sources is avoided, and the applicability of the positioning circuit is improved. In addition, the energy conversion circuit can also acquire downlink radio frequency signals during communication between the terminal and the base station from the antenna, positioning of the terminal in a power-off state is realized by multiplexing the downlink radio frequency signals, and an antenna for collecting the radio frequency signals to perform signal conversion is not required to be specially arranged, so that the cost of the positioning circuit applied to the terminal is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 2 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 3 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 4 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 5 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 6 is a schematic diagram of the positioning circuit in one embodiment;
FIG. 7 is a schematic diagram of an embodiment of a positioning circuit;
FIG. 8 is a flow diagram illustrating a positioning method in one embodiment;
fig. 9 is an internal structural view of a terminal in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The positioning circuit provided by the application can be applied to any electronic equipment or terminal, such as a mobile phone, a watch, an IPAD, a notebook computer and the like. When positioning is realized by electronic equipment or terminals with a positioning function in the market at present, positioning signals can be sent to a base station or a satellite only in a starting state so as to acquire position information. When a user normally closes the electronic equipment or the terminal, the electronic equipment or the terminal automatically sends a message to the base station or the satellite, namely, the electronic equipment or the terminal informs the base station or the satellite of the power-off state of the electronic equipment or the terminal; however, when the user directly pulls out the battery of the electronic device or the terminal, or the battery of the electronic device or the terminal is about to be exhausted, and the electronic device or the terminal is turned off passively, the base station or the satellite defaults that the electronic device or the terminal has no signal because the base station or the satellite does not receive the power-off message sent by the electronic device or the terminal. In any case, the base station or the satellite cannot continuously position the electronic device or the terminal, and the electronic device or the terminal cannot correspondingly acquire the position information of the electronic device or the terminal. Therefore, the positioning mode of the traditional electronic equipment or terminal is very dependent on self power supply, once the power supply is exhausted or the equipment is shut down, the positioning cannot be normally carried out, and based on the positioning mode, the positioning circuit is provided to solve the problems and realize normal positioning under any condition. The following mainly describes a positioning circuit, a positioning method and a terminal proposed in the present application.
First, referring to fig. 1, the positioning circuit is applied to a terminal, where the terminal includes an antenna, a positioning module, and a battery, and the positioning circuit includes: the energy conversion circuit and the control circuit are connected with the energy conversion circuit; the control circuit is used for sending a positioning switching instruction to the energy conversion circuit when detecting that the terminal meets a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time; the energy conversion circuit is used for providing electric energy for the positioning module when a positioning switching instruction is acquired so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit.
The positioning switching instruction is used for instructing the terminal to switch the mode of supplying the electric energy to the positioning module by the battery to the mode of supplying the electric energy to the positioning module by the energy conversion circuit, which is equivalent to directly instructing the energy conversion circuit to supply the electric energy to the positioning module. When the electric quantity of the battery in the terminal is smaller than a preset threshold value, indicating that the electric quantity of the battery in the terminal is about to be exhausted; when the terminal is closed after the preset time, the terminal is in a state of being shut down. The preset threshold and the preset time can be determined in advance according to the hardware performance.
The positioning circuit can be arranged in the terminal and used for assisting the terminal in positioning. The terminal may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. The antenna may include a transmitting antenna and a receiving antenna, or may be a transmitting and receiving antenna. The antenna may be used to transmit positioning signals to base stations or satellites to obtain location information; the antenna can also be used for receiving downlink radio frequency signals transmitted to the antenna by the base station, receiving radio frequency signals transmitted by other electronic equipment, and receiving radio frequency signals of any frequency band existing in the space. The battery is a rechargeable battery, and specifically can be a lithium battery.
The Positioning module may be a Global Positioning System (GPS) Positioning module, and may also be a Global System for Mobile Communications (GSM) Positioning module, or the Positioning module includes both a GPS Positioning module and a GSM Positioning module. When the positioning module is a GPS positioning module, the GPS positioning module transmits a GPS positioning signal to a satellite through an antenna so as to acquire position information from the satellite and realize positioning in a GPS mode; when the positioning module is a GSM positioning module, the GSM positioning module transmits a GSM positioning signal to the base station through the antenna so as to acquire position information from the base station and realize positioning in a GSM mode; when the positioning module comprises the GPS positioning module and the GSM positioning module, the positioning module can realize positioning in a GPS mode and in a GSM mode, and the specific mode can be determined according to user requirements or environmental conditions.
The energy conversion circuit is respectively connected with the antenna, the control circuit and the positioning module. The energy conversion circuit can acquire radio frequency signals from the antenna, convert the radio frequency signals into electric energy, store the electric energy and provide the electric energy for the positioning module to position when the positioning module needs the electric energy.
The control circuit is respectively connected with the energy conversion circuit, the positioning module and the battery. The control circuit can control the battery to supply power to the positioning module, can also control the energy conversion circuit to supply power to the positioning module, and can also correspondingly enable the positioning module to send a positioning signal to a base station or a satellite through an antenna so as to acquire the position information of the terminal. It should be noted that the control circuit may be an existing control circuit in the terminal, and is configured to control the positioning module to transmit the GSP positioning signal and/or the GSM positioning signal, and when the positioning circuit is used to realize positioning, the control circuit is multiplexed to assist the positioning circuit in positioning; optionally, the control circuit may be a specially designed circuit, specifically, a part of circuits in the positioning circuit, and the control circuit is used for cooperating with other circuits in the positioning circuit to realize terminal positioning.
In this embodiment, when the electric quantity of the battery in the terminal is smaller than the preset threshold, that is, the electric quantity of the battery in the terminal is about to be exhausted, and/or when the terminal is closed after the preset time, that is, the terminal is about to be turned off, it indicates that the terminal meets the preset switching condition, that is, it indicates that the terminal cannot continue to perform terminal positioning according to the current positioning mode (GSP positioning mode and/or GSM positioning mode), and needs to perform positioning according to other positioning modes. In this case, the control circuit sends a positioning switching instruction to the energy conversion circuit, so that the energy conversion circuit can acquire a radio frequency signal from the antenna when receiving the positioning switching instruction, convert the acquired radio frequency signal into electric energy, and provide the converted electric energy for the positioning module for positioning; optionally, when receiving the positioning switching instruction, the energy conversion circuit may also directly provide the electric energy stored in the energy conversion circuit for the positioning module to perform positioning, and the electric energy stored in the energy conversion circuit may be obtained after the energy conversion circuit obtains the radio frequency signal from the antenna and performs signal conversion before receiving the positioning switching instruction.
In the above embodiment, the energy conversion circuit arranged in the positioning circuit can convert the radio frequency signal received by the antenna into electric energy, and when the control circuit detects that the electric quantity of the battery of the terminal is about to be exhausted and/or the terminal is about to be powered off, the energy conversion circuit can replace the original battery in the terminal to provide electric energy for the positioning module, so that the positioning module continues to work, and the problem that the positioning module cannot continue to be positioned when the terminal is in the power off state due to the abnormal work of the positioning module caused by the power off can be avoided. Therefore, the positioning circuit provided by the embodiment reduces the dependence on the power supply of the terminal in the positioning process of the terminal, and can realize real-time positioning under any condition. In addition, the antenna can collect radio frequency signals from any source in space, so that the energy conversion circuit can fully utilize the existing signal resource in space to carry out electric energy conversion, the problem of insufficient radio frequency energy source is solved, and the applicability of the positioning circuit is improved. In addition, the energy conversion circuit can also obtain downlink radio frequency signals during communication between the terminal and the base station from the antenna, positioning of the terminal in a power-off state is achieved through multiplexing of the downlink radio frequency signals, an antenna used for collecting the radio frequency signals for signal conversion does not need to be specially arranged, and therefore the cost of the positioning circuit applied to the terminal is reduced.
Optionally, in an application scenario, the control circuit in the positioning circuit in the embodiment of fig. 1 is further configured to send a positioning recovery instruction to the energy conversion circuit when it is detected that the terminal meets a preset recovery condition, so that the energy conversion circuit stops working, and the positioning module obtains electric energy from the battery for positioning; the preset recovery condition comprises that the battery power is not less than a preset threshold value and/or the terminal is started; and the energy conversion circuit is also used for acquiring electric energy from the battery to provide the electric energy to the positioning module for positioning when the positioning recovery instruction is acquired.
The positioning recovery instruction is used for instructing the terminal to switch from a mode of supplying the positioning module with electric energy by the energy conversion circuit to a mode of supplying the positioning module with electric energy by the battery, which is equivalent to directly instructing the battery to supply the positioning module with electric energy. When the electric quantity of the battery in the terminal is not less than a preset threshold value, the electric quantity of the battery in the terminal is sufficient, and the terminal is in a starting state; when the terminal is started, the terminal is in a power-on state. The preset threshold value can be determined in advance according to the hardware performance.
In this embodiment, when the electric quantity of the battery in the terminal is sufficient and/or the terminal is started, it indicates that the terminal meets the preset recovery condition, and in this case, the control circuit sends a positioning recovery instruction to the energy management circuit, so that the energy conversion circuit stops working when receiving the positioning recovery instruction, and then the positioning module obtains electric energy from the battery to continue positioning, so as to recover from the current mode in which the energy conversion circuit supplies power to the positioning module to the original mode in which the battery supplies power to the positioning module.
In the above embodiment, when the control circuit detects that the terminal is switched from the power-off state to the power-on state, the control circuit immediately restores the current positioning mode to the original positioning mode, thereby implementing seamless switching of the positioning mode and enabling the terminal to perform real-time positioning in any scene.
In an embodiment, based on the positioning circuit described in the embodiment of fig. 1, there is further provided a positioning circuit, as shown in fig. 2, further including: the first switch circuit is arranged between the antenna and the energy conversion circuit; and the energy conversion circuit is also used for controlling the first switch circuit to conduct a path between the antenna and the energy conversion circuit when the positioning switching instruction is acquired.
The first switch circuit may be specifically a digital switch circuit, may also be an analog switch circuit, and may also be a mechanical switch circuit, for example, the first switch circuit may be a switch circuit composed of transistors or MOS transistors, and the first switch circuit may also be specifically a switch circuit of a type such as a single-pole double-pole switch, a relay switch, or the like. Optionally, an input end of the first switch circuit is connected to the output end of the antenna, and an output end of the first switch circuit is connected to the input end of the energy conversion circuit.
In this embodiment, when the electric quantity of the battery in the terminal is about to be exhausted and/or the terminal is about to be turned off, the control circuit sends a positioning switching instruction to the energy conversion circuit, so that when the energy conversion circuit receives the positioning switching instruction, the first switch circuit is controlled to turn on a path between the antenna and the energy conversion circuit, so that the radio frequency signal collected on the antenna can be transmitted to the energy conversion circuit, and the energy conversion circuit can convert the radio frequency signal into electric energy to be provided to the positioning module for use.
Optionally, in an application scenario, the control circuit in the positioning circuit in the embodiment of fig. 2 is further configured to send a positioning recovery instruction to the energy conversion circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than a preset threshold value and/or the terminal is started; and the energy conversion circuit is also used for controlling the first switch circuit to disconnect the path between the antenna and the energy conversion circuit when the positioning recovery instruction is acquired.
In this embodiment, when the electric quantity of the battery in the terminal is sufficient and/or the terminal is started, it indicates that the terminal satisfies the preset recovery condition, that is, the terminal can recover from the current positioning mode to the original positioning mode to perform terminal positioning, for example, recover from the current positioning mode to the original GSM positioning mode, which is also equivalent to that the terminal can recover from the current mode in which the energy conversion circuit supplies power to the positioning module to the original mode in which the battery supplies power to the positioning module. Under the condition, the control circuit sends a positioning recovery instruction to the energy conversion circuit, so that when the energy conversion circuit receives the positioning recovery instruction, the first switch circuit is controlled to disconnect the passage between the antenna and the energy conversion circuit, the radio-frequency signal collected on the antenna cannot be transmitted to the energy conversion circuit, the energy conversion circuit stops working, and the terminal does not provide electric energy for the positioning module through the energy conversion circuit any more.
In the above embodiment, because the energy conversion circuit can control the first switch circuit to connect the path between the antenna and the energy conversion circuit when the terminal is in the power-off state, so that the energy conversion circuit can provide electric energy for the positioning module to perform positioning, and can control the first switch circuit to disconnect the path between the antenna and the energy conversion circuit when the terminal is in the power-on state, so that the energy conversion circuit does not provide electric energy for the positioning module any more, and the battery provides electric energy for the positioning module to perform positioning, the positioning circuit in the above embodiment realizes that the terminal can perform positioning under any condition. In addition, the first switch circuit is communicated with the path between the antenna and the energy conversion circuit only when the terminal is in a power-off state, and the energy conversion circuit is not required to work under any condition, so that the use consumption of the energy conversion circuit is reduced, the service life of the energy conversion circuit is prolonged, and the service life of the terminal is prolonged.
In an embodiment, the present application further provides a specific implementation structure of the energy conversion circuit, as shown in fig. 3, the energy conversion circuit includes: the device comprises a radio frequency rectification circuit, an energy management circuit and an energy storage element; the radio frequency rectifying circuit is used for acquiring a radio frequency signal from the antenna, converting the radio frequency signal into direct current voltage and transmitting the direct current voltage to the energy management circuit; the energy management circuit is used for storing the direct-current voltage to the energy storage element when the positioning switching instruction is acquired; and the energy storage element is used for supplying electric energy to the positioning module and the energy management circuit through the direct-current voltage.
Optionally, the energy management circuit is further configured to filter and stabilize the dc voltage, and transmit the filtered and stabilized dc voltage to the energy storage element.
The input end of the radio frequency rectifying circuit is connected with the output end of the antenna, the input end of the energy management circuit is connected with the output end of the radio frequency rectifying circuit, the output end of the energy management circuit is connected with the input end of the energy storage element, and the output end of the energy storage element is connected with the input end of the positioning module; the output end of the control circuit is respectively connected with the input end of the energy management circuit, the input end of the positioning module and the input end of the battery. The energy storage element can be realized by an energy storage capacitor with a small volume and can also be realized by a lithium battery.
In this embodiment, when the electric quantity of the battery in the terminal is about to be exhausted and/or the terminal is about to be turned off, the control circuit sends a positioning switching instruction to the energy management circuit, so that when the energy management circuit receives the positioning switching instruction, the direct current voltage acquired from the radio frequency rectification circuit is stored in the storage element, which is equivalent to charging the storage element by using the acquired direct current voltage. The radio frequency rectifying circuit can acquire a radio frequency signal from the antenna and convert the radio frequency signal into direct current voltage when the energy management circuit receives a positioning switching instruction; optionally, the rf rectifying circuit may also obtain the rf signal from the antenna and convert the rf signal into the dc voltage before the energy management circuit receives the positioning switching instruction. Optionally, after the radio frequency rectification circuit transmits the dc voltage to the energy management circuit, the energy management circuit may further perform filtering and voltage stabilization on the dc voltage to obtain a pure dc voltage, and transmit the pure dc voltage to the energy storage element. It should be noted that a certain amount of electricity is stored in the storage element, and when the terminal is to be powered off, the storage element supplies electric energy to the energy management circuit, so that the energy management circuit can work normally, and obtains the electric energy from the radio frequency rectifying circuit to charge the storage element, and so that the storage element can provide the electric energy for the positioning module to position.
The storage element in the above embodiment may be charged, and when the positioning module cannot obtain the electric energy from the original battery in the terminal, the positioning module may obtain the electric energy from the storage element to continue to use, so that the terminal may continue to be positioned in a power-off state.
In an embodiment, the present application further provides an implementation structure of the energy conversion circuit, as shown in fig. 4, the energy conversion circuit further includes: the second switch circuit is arranged between the radio frequency rectification circuit and the energy management circuit; and the energy management circuit is also used for controlling the second switch circuit to conduct a channel between the radio frequency rectification circuit and the energy management circuit when the positioning switching instruction is obtained.
The second switch circuit may be specifically a digital switch circuit, an analog switch circuit, a mechanical switch circuit, or a switch circuit composed of multiple switch circuits. Optionally, an input end of the second switch circuit is connected to an output end of the radio frequency rectification circuit, and an output end of the second switch circuit is connected to an input end of the energy management circuit.
In this embodiment, when the electric quantity of the battery in the terminal is about to be exhausted and/or the terminal is about to be turned off, the control circuit sends a positioning switching instruction to the energy management circuit, so that when the energy management circuit receives the positioning switching instruction, the second switch circuit is controlled to connect the path between the radio frequency rectification circuit and the energy management circuit, and the direct-current voltage output by the radio frequency rectification circuit can be transmitted to the energy management circuit to be provided to the positioning module for use.
In one embodiment, there is also provided a second switching circuit, as shown in fig. 5, including: the first switch is respectively connected with the output end of the radio frequency rectification circuit, the input end of the discharge circuit and the second switch, and the output end of the discharge circuit is grounded; the second switch is respectively connected with the output end of the radio frequency rectification circuit, the first switch and the input end of the energy management circuit; the energy management circuit is further used for controlling the first switch to be switched off to disconnect a passage between the radio frequency rectification circuit and the discharge circuit and controlling the second switch to be switched on to connect the passage between the radio frequency rectification circuit and the energy management circuit when the positioning switching instruction is obtained.
The first switch or the second switch may be a digital switch circuit, an analog switch circuit, or a mechanical switch circuit. The discharge circuit may be a resistor circuit or a capacitor circuit.
In this embodiment, when the electric quantity of the battery in the terminal is about to be exhausted and/or the terminal is about to be shut down, the control circuit sends a positioning switching instruction to the energy management circuit, so that when the energy management circuit receives the positioning switching instruction, the first switch is controlled to be switched off to disconnect the path between the radio frequency rectification circuit and the discharge circuit, so that the direct-current voltage output by the radio frequency rectification circuit is not released by the discharge circuit, and meanwhile, the second switch is controlled to be switched on to connect the path between the radio frequency rectification circuit and the energy management circuit, so that the direct-current energy output by the radio frequency rectification circuit can be transmitted to the energy management circuit, and can be provided for the positioning module for use at a later stage.
Optionally, in an application scenario, the control circuit in the positioning circuit in the embodiment of fig. 5 is further configured to send a positioning recovery instruction to the energy management circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than a preset threshold value and/or the terminal is started; and the energy management circuit is also used for controlling the first switch to be closed to conduct a path between the radio frequency rectification circuit and the discharge circuit and controlling the second switch to be opened to disconnect the path between the radio frequency rectification circuit and the energy management circuit when the positioning recovery instruction is obtained.
In this embodiment, when the electric quantity of the battery in the terminal is sufficient, and/or when the terminal is started, the control circuit sends a positioning recovery instruction to the energy management circuit, so that when the energy conversion circuit receives the positioning recovery instruction, the first switch is controlled to be closed to connect the path between the radio frequency rectification circuit and the discharge circuit, and simultaneously, the second switch is controlled to be opened to disconnect the path between the radio frequency rectification circuit and the energy management circuit, so that the direct current energy output by the radio frequency rectification circuit can be transmitted to the discharge circuit for discharging, and the direct current energy output by the radio frequency rectification circuit cannot be transmitted to the energy management circuit, and the energy management circuit can stop working, so that the positioning module obtains the electric energy from the battery for positioning.
In the above embodiments, the energy management circuit may enable the terminals to be positioned in any situation by opening or closing the first switch and the second switch. In addition, the first switch, the second switch and the discharge circuit can be realized by using simple devices, so that the manufacturing cost of the positioning circuit can be reduced.
In one embodiment, there is also provided a second switching circuit, as shown in fig. 6, including: the third switch is respectively connected with the output end of the radio frequency rectification circuit and the input end of the energy management circuit; and the energy management circuit is also used for controlling the third switch to be closed when the positioning switching instruction is acquired so as to conduct a channel between the radio frequency rectification circuit and the energy management circuit.
The third switch may be specifically a digital switch circuit, an analog switch circuit, or a mechanical switch circuit. Optionally, one end of the third switch is connected to the output end of the radio frequency rectification circuit, and the other end of the third switch is connected to the input end of the energy management circuit.
In this embodiment, when the electric quantity of the battery in the terminal is about to be exhausted and/or the terminal is about to be turned off, the control circuit sends a positioning switching instruction to the energy management circuit, so that when the energy management circuit receives the positioning switching instruction, the third switch is controlled to turn on a path between the radio frequency rectification circuit and the energy management circuit, and the electric energy output by the radio frequency rectification circuit can be transmitted to the energy management circuit to be provided to the positioning module for use.
Optionally, in an application scenario, the control circuit in the positioning circuit in the embodiment of fig. 6 is further configured to send a positioning recovery instruction to the energy management circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than a preset threshold value and/or the terminal is started; the energy management circuit is further used for controlling the third switch to be switched off when the positioning recovery instruction is acquired so as to switch off a path between the radio frequency rectification circuit and the energy management circuit.
In this embodiment, when the electric quantity of the battery in the terminal is sufficient and/or the terminal is started, the control circuit sends a positioning recovery instruction to the energy management circuit, so that when the energy conversion circuit receives the positioning recovery instruction, the third switch is controlled to be turned off to break a path between the radio frequency rectification circuit and the energy management circuit, so that the direct current energy output by the radio frequency rectification circuit cannot be transmitted to the energy management circuit, and the energy management circuit stops working, so that the positioning module obtains electric energy from the battery for positioning.
In the above embodiments, the energy management circuit may enable the terminals to be positioned in any event by opening or closing the third switch. In addition, since the third switch can be realized by using a simple device, for example, a single-pole switch, the manufacturing cost of the positioning circuit can be reduced.
In an embodiment, the present application further provides an implementation structure of the energy conversion circuit, as shown in fig. 7, the energy conversion circuit further includes: the matching circuit is arranged between the antenna and the radio frequency rectification circuit; the matching circuit is used for acquiring radio frequency signals from the antenna and carrying out frequency selection processing on the radio frequency signals to obtain radio frequency signals of a preset frequency band; and the radio frequency rectification circuit is also used for converting the radio frequency signals with the preset frequency band into direct current voltage and transmitting the direct current voltage to the energy management circuit.
The input end of the matching circuit is connected with the output end of the antenna, and the output end of the matching circuit is connected with the input end of the radio frequency rectification circuit. Since the antenna can collect the radio frequency signal of any frequency band, and in practical application, some radio frequency rectification circuits can only perform signal conversion on the radio frequency signal of a certain frequency band, a matching circuit needs to be arranged to perform frequency selection processing on the collected radio frequency signal of any frequency band, and the radio frequency signal of a preset frequency band is selected to match the radio frequency rectification circuit.
In this embodiment, when the matching circuit outputs the radio frequency signal of the preset frequency band, the radio frequency signal of the preset frequency band may be transmitted to the radio frequency rectification circuit, so that the radio frequency rectification circuit converts the radio frequency signal of the preset frequency band into a direct current voltage, and transmits the direct current voltage to the energy management circuit. The preset frequency band can be determined in advance according to the rectification characteristic of the radio frequency rectification circuit, optionally, the preset frequency band can also be determined in advance according to the frequency band of the downlink radio frequency signal used when the terminal communicates with the base station, so that the positioning circuit can multiplex the downlink radio frequency signal communicated by the terminal and the base station, the existing resources are fully utilized, in addition, an antenna for collecting the radio frequency signal does not need to be specially arranged, and the manufacturing cost of the positioning circuit is reduced.
The present application further provides a positioning method, which can be applied to the positioning circuit described in the above embodiments of fig. 1 to 7, as shown in fig. 8, and the positioning method includes the following steps:
s101, when detecting that a terminal meets a preset switching condition, a control circuit sends a positioning switching instruction to an energy conversion circuit; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time.
S102, the energy conversion circuit provides electric energy for the positioning module when acquiring a positioning switching instruction so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit.
For a method for implementing each step in the above embodiments, reference may be made to the principle description of the positioning circuit in the embodiments of fig. 1 to fig. 7, and for a specific description, reference is made to the foregoing contents, which are not repeated herein.
In one embodiment, a terminal is provided, an internal structure of which may be as shown in fig. 9. The terminal comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the terminal is configured to provide computing and control capabilities. The memory of the terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the terminal is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a positioning method. The display screen of the terminal can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 9 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A positioning circuit, the positioning circuit is applied to a terminal, the terminal includes an antenna, a positioning module and a battery, characterized in that, the positioning circuit includes: the energy conversion circuit and the control circuit are connected with the energy conversion circuit;
the control circuit is used for sending a positioning switching instruction to the energy conversion circuit when the terminal is detected to meet a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time; the positioning switching instruction is used for instructing the terminal to switch the mode of supplying the electric energy to the positioning module by the battery to the mode of supplying the electric energy to the positioning module by the energy conversion circuit;
the energy conversion circuit is used for providing electric energy for the positioning module when the positioning switching instruction is acquired so as to position the positioning module; the electric energy is obtained by converting the radio-frequency signal received by the antenna by the energy conversion circuit;
wherein the energy conversion circuit comprises: the antenna comprises a radio frequency rectification circuit, an energy management circuit, an energy storage element and a matching circuit, wherein the matching circuit is arranged between the antenna and the radio frequency rectification circuit;
the matching circuit is used for acquiring the radio frequency signal from the antenna and performing frequency selection processing on the radio frequency signal to obtain a radio frequency signal of a preset frequency band so as to match the radio frequency rectifying circuit;
the radio frequency rectifying circuit is used for converting the radio frequency signal of the preset frequency band into direct current voltage and transmitting the direct current voltage to the energy management circuit;
the energy management circuit is used for storing the direct-current voltage to the energy storage element when the positioning switching instruction is acquired;
the energy storage element is used for providing electric energy for the positioning module and the energy management circuit through the direct-current voltage;
wherein the positioning circuit further comprises: a first switching circuit disposed between the antenna and the energy conversion circuit;
the energy conversion circuit is further configured to control the first switch circuit to turn on a path between the antenna and the energy conversion circuit when the positioning switching instruction is acquired.
2. The positioning circuit of claim 1,
the control circuit is further configured to send a positioning recovery instruction to the energy conversion circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than the preset threshold value and/or the terminal is started;
the energy conversion circuit is further configured to control the first switch circuit to disconnect a path between the antenna and the energy conversion circuit when the positioning recovery instruction is acquired.
3. The positioning circuit of claim 1, wherein the energy management circuit is further configured to filter and stabilize the dc voltage, and transmit the filtered and stabilized dc voltage to the energy storage element.
4. The positioning circuit of claim 1, wherein the energy conversion circuit further comprises: the second switch circuit is arranged between the radio frequency rectifying circuit and the energy management circuit;
the energy management circuit is further configured to control the second switch circuit to connect the path between the radio frequency rectification circuit and the energy management circuit when the positioning switching instruction is obtained.
5. The positioning circuit of claim 4, wherein the second switching circuit comprises: the first switch is respectively connected with the output end of the radio frequency rectification circuit, the input end of the discharge circuit and the second switch, and the output end of the discharge circuit is grounded; the second switch is respectively connected with the output end of the radio frequency rectification circuit, the first switch and the input end of the energy management circuit;
the energy management circuit is further configured to control the first switch to be turned off to disconnect the path between the radio frequency rectification circuit and the discharge circuit and control the second switch to be turned on to connect the path between the radio frequency rectification circuit and the energy management circuit when the positioning switching instruction is obtained.
6. The positioning circuit of claim 5,
the control circuit is further configured to send a positioning recovery instruction to the energy management circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than the preset threshold value and/or the terminal is started;
the energy management circuit is further configured to control the first switch to be closed to conduct a path between the radio frequency rectification circuit and the discharge circuit and control the second switch to be opened to disconnect the path between the radio frequency rectification circuit and the energy management circuit when the positioning recovery instruction is obtained.
7. The positioning circuit of claim 4, wherein the second switching circuit comprises: the third switch is respectively connected with the output end of the radio frequency rectification circuit and the input end of the energy management circuit;
the energy management circuit is further configured to control the third switch to be closed when the positioning switching instruction is obtained, so as to conduct a path between the radio frequency rectification circuit and the energy management circuit.
8. The positioning circuit of claim 7,
the control circuit is further configured to send a positioning recovery instruction to the energy management circuit when it is detected that the terminal meets a preset recovery condition; the preset recovery condition comprises that the battery power is not less than the preset threshold and/or the terminal is started;
the energy management circuit is further used for controlling the third switch to be switched off when the positioning recovery instruction is acquired, so that a path between the radio frequency rectification circuit and the energy management circuit is switched off.
9. The positioning circuit according to claim 1, wherein the control circuit is further configured to send a positioning recovery instruction to the energy conversion circuit when detecting that the terminal satisfies a preset recovery condition, so as to stop the energy conversion circuit and enable the positioning module to obtain electric energy from the battery for positioning; the preset recovery condition comprises that the battery power is not less than the preset threshold value and/or the terminal is started.
10. A positioning method applied to the positioning circuit according to any one of claims 1 to 9, the positioning method comprising:
the control circuit sends a positioning switching instruction to the energy conversion circuit when detecting that the terminal meets a preset switching condition; the preset switching condition comprises that the battery power is smaller than a preset threshold value and/or the terminal is closed after a preset time; the positioning switching instruction is used for instructing the terminal to switch the mode of supplying the positioning module with the electric energy by the battery to the mode of supplying the positioning module with the electric energy by the energy conversion circuit;
the energy conversion circuit provides electric energy for the positioning module when acquiring the positioning switching instruction so as to position the positioning module; the electric energy is obtained by converting the radio frequency signal received by the antenna by the energy conversion circuit;
wherein the energy conversion circuit comprises: the antenna comprises a radio frequency rectification circuit, an energy management circuit, an energy storage element and a matching circuit, wherein the matching circuit is arranged between the antenna and the radio frequency rectification circuit;
the matching circuit acquires the radio frequency signal from the antenna, and performs frequency selection processing on the radio frequency signal to obtain a radio frequency signal of a preset frequency band so as to match the radio frequency rectification circuit;
the radio frequency rectifying circuit converts the radio frequency signal of the preset frequency band into direct current voltage and transmits the direct current voltage to the energy management circuit;
the energy management circuit stores the direct-current voltage to the energy storage element when the positioning switching instruction is acquired;
the energy storage element provides electric energy for the positioning module and the energy management circuit through the direct current voltage;
wherein the positioning circuit further comprises: a first switching circuit disposed between the antenna and the energy conversion circuit;
the energy conversion circuit is further configured to control the first switch circuit to turn on a path between the antenna and the energy conversion circuit when the positioning switching instruction is obtained.
11. A terminal, characterized in that the terminal comprises a positioning circuit according to any of claims 1-9.
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| CN103093553B (en) * | 2011-10-31 | 2017-01-25 | 国民技术股份有限公司 | Device for mobile payment and system and method for continuous power supply |
| CN104659499B (en) * | 2015-02-28 | 2017-07-25 | 西安电子科技大学 | A kind of multi-frequency band radio-frequency energy capturing systems |
| US9656621B2 (en) * | 2015-09-14 | 2017-05-23 | Pearl Automation Inc. | System and method for sensor module power management |
| CN105938200B (en) * | 2016-04-12 | 2018-03-23 | 江苏舟航物联网技术有限公司 | Self-powered locator can be achieved in one kind |
| CN106454744A (en) * | 2016-12-01 | 2017-02-22 | 广州杰赛科技股份有限公司 | Transmission method and transmission device for dynamic position information and terminal |
| CN107508996B (en) * | 2017-09-27 | 2020-07-31 | Oppo广东移动通信有限公司 | Safety positioning device, method, terminal equipment and storage medium |
| CN108090552B (en) * | 2017-12-19 | 2020-12-18 | 武汉瑞纳捷电子技术有限公司 | CPC card of changeable power supply mode |
| CN110138103A (en) * | 2019-04-17 | 2019-08-16 | 电子科技大学 | A kind of radio frequency micro-energy acquisition device based on three frequency range RECTIFYING ANTENNAs |
| CN209948689U (en) * | 2019-07-24 | 2020-01-14 | 杭州一骑轻尘信息技术有限公司 | Power supply device and power supply system |
| CN110401268B (en) * | 2019-07-29 | 2023-02-03 | 哈尔滨工业大学 | Radio frequency energy collection method and system based on electromagnetic space situation perception |
| CN112448727A (en) * | 2019-08-30 | 2021-03-05 | Oppo广东移动通信有限公司 | Electronic device and terminal device |
| CN110633001A (en) * | 2019-09-19 | 2019-12-31 | Oppo广东移动通信有限公司 | Electronic equipment control method and device and electronic equipment |
| CN111950305A (en) * | 2020-08-06 | 2020-11-17 | 普玄物联科技(杭州)有限公司 | Self-charging Bluetooth electronic tag system |
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| CN107592205A (en) * | 2016-07-06 | 2018-01-16 | 中兴通讯股份有限公司 | WIFI power switching method, circuit and device |
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