Positioning device, method and system

Abstract

The invention provides a positioning device, method and system, and belongs to the technical field of positioning. The positioning device comprises a plurality of antenna units, a controller, a stress sensor and a temperature sensor. Each antenna unit comprises a phase adjustment assembly and a radiation assembly, and the phase adjustment assembly comprises a first substrate, a second substrate and an adjustable dielectric layer; the temperature sensor is configured to detect the current external environment temperature; the stress sensor is configured to detect the current stress of the phase adjustment assembly; the controller is configured to adjust a first bias voltage loaded on the first electrode layer and a second bias voltage loaded on the second electrode layer based on the current external environment temperature and the current stress of the phase adjusting assembly. The phase of the electromagnetic wave is adjusted according to the temperature of the current external environment and the stress of the phase adjusting assembly, and low-power-consumption positioning is achieved.

Description

Technical Field

[0001] The present disclosure belongs to the field of positioning technology, and particularly relates to a positioning device, method and system. Background Art

[0002] In the event of natural disasters, ground communication equipment will be destroyed and unable to function, so aircraft are usually sent to search and rescue in the air. When the aircraft is far away from the ground, it is often necessary to rely on radar to search. In the eyes of the fast-moving radar, the ground is a static object, and it is not easy to find the designated target. The existing positioning devices generally need to actively transmit information, the system is large in size, high in power consumption, and fixed in shape, so it is not conducive to carrying around, and it is complex for ordinary people to operate. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art and to provide a positioning device, method and system which achieve low power consumption by reflecting radar signals without actively transmitting signals.

[0004] In a first aspect, the technical solution adopted to solve the technical problem of the present invention is a positioning device, which includes multiple antenna units, a controller, a stress sensor and a temperature sensor; the antenna unit includes a phase adjustment component and a radiation component electrically connected to the phase adjustment component; the phase adjustment component includes a first substrate and a second substrate arranged opposite to each other, a first electrode layer arranged on a side of the first substrate close to the second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and an adjustable dielectric layer located between the first electrode layer and the second electrode layer; wherein,

[0005] The temperature sensor is configured to detect the current external environment temperature; the stress sensor is configured to detect the current stress of the phase adjustment component;

[0006] The controller is configured to adjust a first bias voltage loaded on the first electrode layer and a second bias voltage loaded on the second electrode layer based on the current external environment temperature and the current stress of the phase adjustment component.

[0007] In some embodiments, the apparatus further comprises:

[0008] a state switch configured to control the working mode of the positioning device and send the working mode to the controller;

[0009] The controller is further configured to determine a first bias voltage applied to the first electrode layer and a second bias voltage applied to the second electrode layer based on the working mode.

[0010] In some embodiments, the first bias voltage is a first pulse signal including a first voltage and a second voltage alternating, and the second bias voltage is a second pulse signal including a third voltage and a fourth voltage alternating; the first pulse signal and the second pulse signal are 180° out of phase with each other;

[0011] When the working mode is the low power consumption mode, the voltage difference between the first voltage and the third voltage is not equal to the voltage difference between the second voltage and the fourth voltage;

[0012] When the working mode is the fast search mode, the voltage difference between the first voltage and the third voltage is equal to the voltage difference between the second voltage and the fourth voltage.

[0013] In some embodiments, in low power consumption mode, the duty ratio of the first pulse signal and the second pulse signal in each pulse period ranges from 1 / 9 to 9.

[0014] In some embodiments, the controller is further configured to store stress calibration data for adjusting different stresses to voltage-phase of a reference stress at a standard temperature and temperature calibration data for adjusting different temperatures to voltage-phase of a standard temperature under a standard stress;

[0015] The controller is specifically configured to receive the current stress of the phase adjustment component, and adjust the first bias voltage loaded by the first electrode layer to a first intermediate bias voltage and the second bias voltage loaded by the second electrode layer to a second intermediate bias voltage according to the current stress of the phase adjustment component through the stress calibration data;

[0016] The controller is further specifically configured to receive the temperature of the current external environment, and adjust the first intermediate bias voltage and the second intermediate bias voltage according to the temperature of the current external environment through the temperature calibration data.

[0017] In some embodiments, the phase adjustment component also includes a first circuit board and a second circuit board, the first electrode layer is connected to the input end of the controller through the first circuit board, and the second electrode layer is connected to the input end of the controller through the second circuit board, and the first circuit board and the second circuit board are both flexible printed circuit boards.

[0018] In some embodiments, both the first substrate and the second substrate are flexible substrates.

[0019] In some embodiments, the apparatus further comprises:

[0020] A battery is configured to power the controller.

[0021] In some embodiments, the apparatus further comprises:

[0022] A charging module is configured to charge the battery.

[0023] In some embodiments, the apparatus further comprises:

[0024] The flexible protective film is arranged on a side of the first substrate away from the adjustable intermediate dielectric layer.

[0025] In some embodiments, the flexible protective film is provided with a flexible film and elastic fibers in sequence along a direction away from the first substrate.

[0026] In a second aspect, an embodiment of the present disclosure provides a positioning method, which is applied to a positioning device, wherein the positioning device includes a plurality of antenna units, a controller, a stress sensor, and a temperature sensor; the antenna unit includes a phase adjustment component, and a radiation component electrically connected to the phase adjustment component; the phase adjustment component includes a first substrate and a second substrate arranged opposite to each other, a first electrode layer arranged on a side of the first substrate close to the second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and an adjustable dielectric layer located between the first electrode layer and the second electrode layer; the method includes:

[0027] The temperature sensor detects the current external environment temperature; the stress sensor detects the current stress of the phase adjustment component;

[0028] The controller adjusts a first bias voltage applied to the first electrode layer and a second bias voltage applied to the second electrode layer based on the current ambient temperature and the current stress of the phase adjustment component.

[0029] In a third aspect, an embodiment of the present disclosure provides a positioning system, the system comprising any one of the positioning devices described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A structural diagram of a positioning device provided in an embodiment of the present disclosure;

[0031] Figure 2 A schematic diagram of a phase adjustment component provided in an embodiment of the present disclosure;

[0032] Figure 3 A structural diagram of another positioning device provided in an embodiment of the present disclosure;

[0033] Figure 4 A schematic diagram of the relationship between a phase control component and other components in an embodiment of the present disclosure;

[0034] Figure 5A schematic diagram of the appearance of a positioning device provided in an embodiment of the present disclosure;

[0035] Figure 6 A flow chart of a positioning method provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] Figure 1 A structural diagram of a positioning device provided in an embodiment of the present disclosure. Figure 2 A schematic diagram of a phase adjustment component provided by an embodiment of the present disclosure. Figure 1 and Figure 2 The positioning device includes a plurality of antenna units 10, a controller 20, a stress sensor 30 and a temperature sensor 40; each antenna unit 10 includes a phase adjustment component 11, and a radiation component 12 electrically connected to the phase adjustment component 11; the phase adjustment component 11 includes a first substrate 1 and a second substrate 2 arranged opposite to each other, a first electrode layer arranged on a side of the first substrate 1 close to the second substrate 2, a second electrode layer arranged on a side of the second substrate 2 close to the first substrate 1, and an adjustable dielectric layer 3 located between the first electrode layer and the second electrode layer.

[0039] The temperature sensor 40 is configured to detect the current external environment temperature, and the stress sensor 30 is configured to detect the current stress of the phase adjustment component 11. The controller 20 is configured to adjust the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer based on the current external environment temperature and the current stress of the phase adjustment component 11.

[0040] In the embodiment of the present disclosure, the current stress of the phase adjustment component 11 is detected by the stress sensor 30, and the shape of the first substrate 1 and the second substrate 2 of the phase adjustment component 11 can be inverted according to the stress of each position of the phase adjustment component 11, and the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer are adjusted according to the shape of the first substrate 1 and the second substrate 2 of the phase adjustment component 11, so as to adjust the phase of the electromagnetic wave, so that the reflection surface of the radiation component 12 reflecting the electromagnetic wave meets the expected requirements, and low power consumption and target positioning are achieved. Further, by setting a temperature sensor 40 to detect the external environment temperature, the temperature of the phase adjustment component 11 is calibrated to solve the problem that the output characteristics of the phase adjustment component 11 are inconsistent with the temperature drift at different temperatures, and the positioning device can work stably in different environments. In addition, the positioning device disclosed in the embodiment of the present disclosure has no receiving module, and can only passively receive electromagnetic waves emitted by radars, etc., and reflect electromagnetic waves emitted by radars, etc., which can be easily recognized by radars, etc. Because the positioning device does not need to actively transmit signals, the overall structure is simple, and passive is safer and has lower power consumption. The positioning device is a passive identification device with low power consumption and easy to carry, which solves the problem of existing positioning devices requiring all-weather operation.

[0041] Specifically, the antenna unit 10 is an electronic device that transmits or receives electromagnetic waves. The same antenna unit can be used as both a receiving antenna and a transmitting antenna. The phase adjustment component 11 in the antenna unit 10 can adjust the phase of the electromagnetic wave to control the direction of receiving / reflecting the electromagnetic wave. The radiation component 12 in the antenna unit 10 can reflect the electromagnetic wave whose phase has been adjusted by the phase adjustment component 11 in a specified direction.

[0042] The potential difference formed between the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer of the phase adjustment component 11 forms an electric field. Under the drive of the electric field, the director of the adjustable dielectric layer 3 will deflect, resulting in a change in the relative dielectric constant. Taking the adjustable electrolyte layer 3 as a liquid crystal layer as an example, the director of the liquid crystal molecule deflects under the drive of the electric field, and its relative dielectric constant changes. At this time, if an electromagnetic wave signal is input to the phase adjustment component 11, then after passing through the phase adjustment component 11, the output electromagnetic wave signal changes with the deflection of the liquid crystal molecules, and the phase of the output electromagnetic wave changes accordingly, that is, the direction of the received / reflected electromagnetic wave changes.

[0043] In addition, the phase adjustment component 11 includes a first substrate 1, a second substrate 2 and an adjustable dielectric layer 3. The first substrate 1 and the second substrate 2 have an important influence on the performance of the antenna unit. The first substrate 1 and the second substrate 2 are usually an insulating material, such as glass-based, FR4, polytetrafluoroethylene, ceramic, glass-based and other dielectrics. The shape of the first substrate 1 and the second substrate 2 will affect the radiation direction of the antenna unit 10. For example, if the first substrate 1 and the second substrate 2 are circular, the radiation direction of the antenna unit 10 will be omnidirectional. If the first substrate 1 and the second substrate 2 are square, the radiation direction of the antenna unit 10 is directional. Compared with the first substrate 1 and the second substrate 2 being a curved surface, when the first substrate 1 and the second substrate 2 are planes, the radiation direction of the antenna unit 10 will be more omnidirectional, and the received / reflected electromagnetic waves will be stronger. Therefore, the embodiment of the present disclosure can control the shape of the first substrate 1 and the second substrate 2 according to the strength of the required electromagnetic waves to control the radiation direction of the antenna unit 10. Specifically, in order to adapt to the change in the shape of the positioning device, a stress sensor 30 is provided in the positioning device in the embodiment of the present disclosure to detect the current stress of the phase adjustment component 11, specifically, to detect the current stress of the first substrate 1 and the second substrate 2 in the phase adjustment component 11. First, the current stress of different positions of the first substrate 1 and the second substrate 2 is detected by the stress sensor 30, and the shapes of the first substrate 1 and the second substrate 2 can be inverted according to the current stress, and the current shape of the first substrate 1 and the second substrate 2 is determined by identifying the bending deformation of the current first substrate 1 and the second substrate 2. Then, according to the current shape of the first substrate 1 and the second substrate 2, the controller configures a suitable voltage, that is, adjusts the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer to obtain a suitable voltage, so as to change the phase of the electromagnetic wave, adjust the current shape of the first substrate 1 and the second substrate 2 to the expected shape, and radiates the electromagnetic wave in the expected direction to achieve the expected reflection intensity.

[0044] Among them, the current form of the first substrate 1 and the second substrate 2 refers to the current bending degree of the first substrate 1 and the second substrate 2, and the expected form refers to the expected bending degree of the first substrate 1 and the second substrate 2. The expected form can be determined according to the strength of the required electromagnetic wave signal. For example, a very strong electromagnetic wave signal is currently required to facilitate the target to be found. Compared with the curved surface, when the first substrate 1 and the second substrate 2 are planar shapes, the radiation direction of the antenna unit 10 will be the largest, and the obtained electromagnetic wave signal is the strongest, so the first substrate 1 and the second substrate 2 can be adjusted into a plane. The expected form can also be determined according to specific needs, and the embodiments of the present disclosure are not limited to this. It can be understood that the actual shape of the first substrate 1 and the second substrate 2 is unchanged, but the direction of the first substrate 1 and the second substrate 2 receiving / reflecting electromagnetic waves is changed by the first bias voltage and the second bias voltage, which is equivalent to the shape of the first substrate 1 and the second substrate 2.

[0045] It should be noted that the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer are adjusted according to the current stress of the phase adjustment component 11, and the adjustment is performed under the condition of standard temperature. That is, only under the standard temperature, the adjustment scheme for adjusting the phase adjustment component 11 from the current form to the expected form is the scheme for adjusting the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer. Assuming that the current temperature is not the standard temperature, the voltage configured according to the current adjustment of the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer will not adjust the phase adjustment component 11 from the current form to the expected form, and achieve the expected effect. In order to adapt to different outdoor temperature conditions, after adjusting the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer through the stress sensor 30, it is also necessary to adjust them to the standard temperature according to the temperature of the current external environment. Among them, the standard temperature can be set according to the specific situation.

[0046] In some embodiments, the controller 20 is also configured to store stress calibration data of voltage-phase for adjusting different stresses to reference stresses at standard temperature and temperature calibration data of voltage-phase for adjusting different temperatures to standard temperature under standard stress. In this case, the controller 20 is specifically configured to receive the current stress of the phase adjustment component 11 detected by the stress sensor 30, and adjust the first bias voltage loaded on the first electrode layer to the first intermediate bias voltage and the second bias voltage loaded on the second electrode layer to the second intermediate bias voltage according to the current stress of the phase adjustment component 11 through the stress calibration data; the controller 20 is also specifically configured to receive the temperature of the current external environment detected by the temperature sensor 40, and adjust the first intermediate bias voltage and the second intermediate bias voltage according to the temperature of the current external environment through the temperature calibration data.

[0047] Specifically, the reference stress is the stress corresponding to the expected shape of the phase adjustment component 11. It can be understood that if the temperature of the current external environment is the standard temperature, it is only necessary to adjust the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer according to the current stress of the phase adjustment component 11, and there is no need to adjust them according to the temperature. If the current stress of the current phase adjustment component 11 is the reference stress, and the current external environment temperature is not the standard temperature, it is only necessary to adjust the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer according to the external environment temperature, and there is no need to adjust them according to the current stress of the phase adjustment component 11.

[0048] In some embodiments, in addition to the first substrate 1, the second substrate 2 and the adjustable dielectric layer 3, the phase adjustment component 11 also includes a first circuit board 4 and a second circuit board 5. The first electrode layer is connected to the input end of the controller 20 through the first circuit board 4, and the second electrode layer is connected to the input end of the controller 20 through the second circuit board 5. The first circuit board 4 and the second circuit board 5 are both flexible printed circuit boards.

[0049] In some embodiments, the first substrate 1 and the second substrate 2 are flexible substrates, such as flexible glass substrates, and may also be flexible substrates made of other flexible materials.

[0050] Specifically, the flexible substrate and the flexible printed circuit board used in the embodiment of the present disclosure enable the entire positioning device to achieve a certain degree of bending deformation, and the shape of the positioning device can be adjusted according to the shape of the positioned target, such as covering the corresponding environment such as the tent, the backpack, the roof, the arm, etc., to achieve a good conformal effect. For example, some application scenarios require the positioning device to be laid flat, and some application scenarios require the positioning device to be bent, etc., or when the positioning device is not needed, it can also be bent to reduce the area and volume occupied by the positioning device for easy carrying. The positioning device can meet the needs of complex outdoor environments. At the same time, due to different application scenarios, the shape of the positioning device is different, that is, the shapes of the first substrate 1 and the second substrate 2 of the phase adjustment component 11 are different, so the stress sensor 30 is required to detect the current stress of the phase adjustment component 11, judge the current shape of the phase adjustment component 11, so as to determine the first bias voltage and the second bias voltage required to adjust the current shape of the current phase adjustment component 11 to the expected shape, and adjust the current first bias voltage and the second bias voltage.

[0051] Figure 3 A structural diagram of another positioning device provided in an embodiment of the present disclosure, such as Figure 3 As shown, in addition to multiple antenna units 10, a controller 20, a stress sensor 30 and a temperature sensor 40, the positioning device also includes a state switch 50, which is configured to control the working mode of the positioning device and send the working mode to the controller 20; the controller 20 is also configured to determine the first bias voltage loaded by the first electrode layer and the second bias voltage loaded by the second electrode layer based on the working mode.

[0052] Specifically, the status switch 50 adjusts the working mode so that the positioning device is in working modes such as "off", "low power consumption", and "fast search". In the low power consumption mode, the positioning device automatically "flashes" regularly, that is, the antenna unit 10 regularly receives / reflects electromagnetic wave signals of different strengths, so that the electromagnetic wave signals emitted by the reflected radar are easily recognized by the radar, and because there is no need to actively transmit signals, the overall structure is simple, passive, safer, and has lower power consumption. In the "fast search" mode, the "reflection plane" of the positioning device rotates regularly to increase the probability of being recognized by the radar. At this time, the "reflection plane" of the positioning device can be the "reflection plane" when the intensity of the electromagnetic wave received / reflected by the antenna unit 10 is the largest, making it easier to be recognized by the radar. In this mode, there is no need to transmit signals. Compared with the traditional device that actively transmits signals, the power consumption is still very small. When the positioning device is working normally, the user can only operate the status switch 50, and select the three working modes of "off", "low power consumption", and "fast search" through the status switch 50. The controller 20 determines the strength of the electromagnetic wave signal that the antenna unit 10 needs to receive / reflect according to the working mode, that is, determines the direction in which the antenna unit 10 receives / reflects the electromagnetic wave, and further determines the first bias voltage required to be loaded on the first electrode layer and the second bias voltage required to be loaded on the second electrode layer, so as to adjust the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer.

[0053] In some embodiments, the first bias voltage is a first pulse signal including a first voltage and a second voltage alternating, and the second bias voltage is a second pulse signal including a third voltage and a fourth voltage alternating; the first pulse signal and the second pulse signal are 180° out of phase. When the working mode is the shutdown mode, the voltage difference between the first voltage and the third voltage is equal to the voltage difference between the second voltage and the fourth voltage, and the first voltage, the second voltage, the third voltage and the fourth voltage are all 0.

[0054] When the working mode is the low power mode, the voltage difference between the first voltage and the third voltage is not equal to the voltage difference between the second voltage and the fourth voltage. Taking the adjustable electrolyte layer 3 as a liquid crystal molecule as an example, two different electric fields are periodically formed between the first electrode layer and the second electrode layer. Under the drive of the two different electric fields, the liquid crystal molecule director vectors are deflected differently, and their relative dielectric constants are also changed differently. At this time, if an electromagnetic wave signal is input to the phase adjustment component 11, then after passing through the phase adjustment component 11, the electromagnetic wave signals are output respectively. With the different deflections of the liquid crystal molecules, the phases of the output electromagnetic waves change differently, that is, the antenna unit 10 receives / reflects electromagnetic waves in different directions, that is, the antenna unit 10 will periodically receive / reflect electromagnetic waves of different intensities to achieve a "flash" effect.

[0055] When the working state is the fast search mode, the voltage difference between the first voltage and the third voltage is equal to the voltage difference between the second voltage and the fourth voltage. That is, in the fast search mode, the first electrode layer and the second electrode layer only form an electric field, and there will be no "flickering" effect, which is distinguished from the low power consumption mode. Among them, the first electrode layer and the second electrode layer only form an electric field. After passing through the phase adjustment component 11, the output electromagnetic wave signal is the same as the deflection of the liquid crystal molecules, and the plane where the antenna unit 10 receives / reflects the electromagnetic wave is also called the "equal phase plane". In the fast search mode, the electric field formed by the first electrode layer and the second electrode layer makes the antenna unit 10 receive / reflect the electromagnetic wave in the most comprehensive direction, so that the intensity of the electromagnetic wave received / reflected by the antenna unit 10 reaches the maximum, which can quickly attract the attention of radars and the like, and achieve the purpose of positioning. At the same time, the controller 20 is also configured to rotate the "equal phase plane" at different angles to achieve the reflection of the received electromagnetic waves at different angles, which can quickly attract the attention of radars and the like, and achieve the purpose of positioning.

[0056] In some embodiments, the controller 20 is also configured to control the duty cycle of the first pulse signal and the second pulse signal in each pulse cycle in low power consumption mode. Specifically, the first pulse signal and the second pulse signal represent electromagnetic waves of different strengths, respectively. Strong electromagnetic wave signals are brighter and easier to locate, but at the same time they increase power consumption. On the contrary, weak electromagnetic waves have low power consumption, but they are also darker and less likely to be found. The controller 20 controls the brightness and power consumption of the "flash" by controlling the duty cycle of the first pulse signal and the second pulse signal in each pulse cycle. The duty cycle of the first pulse signal and the second pulse signal can be set specifically according to actual conditions. For example, when the environment is relatively dark, the "flash" does not need to be very bright and is relatively easy to be found. At this time, the duty cycle of the pulse signal where the weak electromagnetic wave is located can be set longer, which can reduce power consumption and so on. In low power consumption mode, the duty ratio of the first pulse signal and the second pulse signal in each pulse cycle ranges from close to 0 to infinity, that is, the smallest extreme case is that the duty ratio of the first pulse signal is very very small, and almost all of it is the second pulse signal; the largest extreme case is that the duty ratio of the first pulse signal is almost all of it, and the duty ratio of the second pulse signal is very very small. The duty ratio of the first pulse signal and the second pulse signal ranges between these two.

[0057] In some embodiments, the duty cycle of the first pulse signal and the second pulse signal in each pulse period ranges from 1 / 9 to 9. For example, taking a pulse period of 1000ms as an example, the duration of the first pulse signal and the duration of the second pulse signal can be set between 100ms and 900ms. For example, the duration of the first pulse signal is set to 100ms and the duration of the second pulse signal is set to 900ms, or the duration of the first pulse signal is set to 300ms and the duration of the second pulse signal is set to 700ms, or the duration of the first pulse signal is set to 600ms and the duration of the second pulse signal is set to 400ms, and so on. In general, the duty cycle of the first pulse signal and the second pulse signal in each pulse period will not have the extreme situation mentioned above, otherwise the "flickering" effect will not be achieved. Generally, it is set between 1 / 9 and 9, which can achieve the "flickering" effect while taking into account the power consumption requirements.

[0058] In some embodiments, the positioning device includes a battery 60 in addition to the plurality of antenna units 10, the controller 20, the stress sensor 30, the temperature sensor 40 and the state switch 50. The battery 60 is configured to power the controller 20. Specifically, the battery 60 may be a rechargeable lithium battery. The battery is in the shape of a long strip and can be placed at the edge of the positioning device without affecting the flexibility of the entire device, while allowing the positioning device to continue to work for a longer time.

[0059] In some embodiments, the battery 60 powers on the controller 20 according to the working mode sent by the status switch 50. Specifically, when the "off" mode is selected, the controller 20 is disconnected from the battery 60 and the controller 20 is not powered on. When the "low power consumption" mode is selected, the controller 20 is powered on, and the state of the controller 20 is "0", that is, a low level state; when the "fast search" mode is selected, the state of the controller 20 is "1", that is, a high level state, and is in the fast search mode.

[0060] In some embodiments, in addition to multiple antenna units 10, a controller 20, a stress sensor 30, a temperature sensor 40, a state switch 50 and a battery 60, the positioning device also includes a charging module 70, and the charging module 70 is configured to charge the battery 60. For example, the charging module 70 can be a solar charging module, which is configured to convert solar energy into electrical energy to increase the battery life in an outdoor environment. Of course, in addition to solar charging, users can also choose to charge by themselves, using a standard type C interface. The positioning device in the disclosed embodiment uses a charging module 60 to achieve a longer working time and increase the chance of being searched.

[0061] In some embodiments, in addition to multiple antenna units 10, a controller 20, a stress sensor 30, a temperature sensor 40, a state switch 50, a battery 60, and a charging module 70, the positioning device also includes a flexible protective film 80, which is arranged on the side of the first substrate 1 away from the adjustable electrical intermediate dielectric layer 3. In some embodiments, the flexible protective film 80 sequentially arranges a flexible film and an elastic fiber in a direction away from the first substrate 1. In the embodiment of the present disclosure, the flexible protective film 80 plays a protective role for the entire positioning device, and is composited with a flexible film and a highly elastic fiber, which is flexible while minimizing RF loss.

[0062] In some embodiments, multiple antenna units 10 are arranged according to a certain pattern to form an array antenna, which can improve the radiation direction of the antenna and reduce power consumption.

[0063] Figure 4 FIG. 1 is a schematic diagram showing the relationship between a phase adjustment component and other components in an embodiment of the present disclosure. Figure 4 As shown, the phase adjustment component 11 includes a first substrate 1, a second substrate 2, an adjustable dielectric layer 3, a first circuit board 4 and a second circuit board 5, wherein the first electrode layer is connected to the input end of the controller 20 through the first circuit board 4, and the second electrode layer is connected to the input end of the controller 20 through the second circuit board 5. The radiation component 12 is electrically connected to the phase adjustment component 11.

[0064] Figure 5 A schematic diagram of the appearance of a positioning device provided in an embodiment of the present disclosure. Figure 2 The phase adjustment component 11 includes a first substrate 1 and a second substrate 2 arranged opposite to each other, a first electrode layer arranged on a side of the first substrate 1 close to the second substrate 2, a second electrode layer arranged on a side of the second substrate 2 close to the first substrate 1, and an adjustable dielectric layer 3 located between the first electrode layer and the second electrode layer. Figure 5 The radiation component 12 is arranged on a side of the second substrate 2 in the phase adjustment component 11 away from the adjustable dielectric layer 3 .

[0065] The flexible protective film 80 is arranged on the side of the first plate 1 in the phase adjustment component 11 away from the adjustable dielectric layer 3. The battery 60, the charging module 70, the state switch 50, and the controller 20 are arranged on the outside of the flexible protective film 80, which does not affect the flexibility of the entire positioning device. Of course, the battery 60, the charging module 70, the state switch 50, and the controller 20 can also be set to other positions, and the embodiments of the present disclosure do not limit this. The stress sensor 40 and the temperature sensor 30 are on the outside of the flexible protective film 80, which does not affect the flexibility of the entire positioning device, and are distributed around the phase adjustment component 11 to detect the stress at each position of the phase adjustment component 11 and the temperature of the surrounding external environment.

[0066] In some embodiments, when there are multiple positioning devices, they can be set to work in conjunction with each other, so that the effects of the multiple positioning devices working together will continue to overlap. In the "low power consumption" mode, a larger "flash" will be formed, and in the "quick search" mode, a larger brightness will be formed, making it easier to locate and search for targets, greatly increasing the ability to be located.

[0067] Figure 6 A flow chart of a positioning method provided for an embodiment of the present disclosure. The positioning method can be applied to any positioning device in the above embodiments, the positioning device comprising a plurality of antenna units, a controller, a stress sensor and a temperature sensor; the antenna unit comprises a phase adjustment component and a radiation component electrically connected to the phase adjustment component; the phase adjustment component comprises a first substrate and a second substrate arranged opposite to each other, a first electrode layer arranged on a side of the first substrate close to the second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and an adjustable dielectric layer located between the first electrode layer and the second electrode layer; the positioning method comprises:

[0068] S601: The temperature sensor detects the current external environment temperature; the stress sensor detects the current stress of the phase adjustment component.

[0069] S602: The controller adjusts the first bias voltage loaded on the first electrode layer and the second bias voltage loaded on the second electrode layer based on the current external ambient temperature and the current stress of the phase adjustment component, so that the phase adjustment component adjusts the phase of the electromagnetic wave based on the adjusted first bias voltage and second bias voltage, and enables the radiation component to reflect the electromagnetic wave with adjusted phase.

[0070] In the disclosed embodiment, the current stress of the phase adjustment component is detected by a stress sensor, and the shape of the phase adjustment component can be inverted according to the stress at each position of the phase adjustment component, and the first bias voltage and the second bias voltage are adjusted according to the shape of the phase adjustment component, and the phase of the electromagnetic wave is adjusted so that the reflection surface of the radiation component reflecting the electromagnetic wave meets the expected requirements. Furthermore, by setting a temperature sensor to detect the external environment temperature, the phase adjustment component is temperature calibrated to solve the problem of inconsistent output characteristics of the phase adjustment component due to temperature drift at different temperatures.

[0071] In some embodiments, the positioning method further includes: determining a first bias voltage loaded on the first electrode layer and a second bias voltage loaded on the second electrode layer based on the working mode.

[0072] In some embodiments, the first bias voltage is a first pulse signal including a first voltage and a second voltage alternatingly, and the second bias voltage is a second pulse signal including a third voltage and a fourth voltage alternatingly; the first pulse signal and the second pulse signal are 180° out of phase with each other; when the operating mode is a low power consumption mode, the voltage difference between the first voltage and the third voltage is not equal to the voltage difference between the second voltage and the fourth voltage; when the operating mode is a fast search mode, the voltage difference between the first voltage and the third voltage is equal to the voltage difference between the second voltage and the fourth voltage.

[0073] In some embodiments, in the low power consumption mode, the duty ratio of the first pulse signal and the second pulse signal in each pulse period ranges from 1 / 9 to 9.

[0074] In some embodiments, the positioning method also includes: storing stress calibration data of the voltage-phase that adjusts different stresses to the reference stress under the standard temperature and temperature calibration data of the voltage-phase that adjusts different temperatures to the standard temperature under the standard stress in the controller; the controller receives the current stress of the phase adjustment component, and adjusts the first bias voltage loaded by the first electrode layer to the first intermediate bias voltage and the second bias voltage loaded by the second electrode layer to the second intermediate bias voltage according to the current stress of the phase adjustment component through the stress calibration data; the controller also receives the temperature of the current external environment, and adjusts the first intermediate bias voltage and the second intermediate bias voltage according to the temperature of the current external environment through the temperature calibration data.

[0075] In some embodiments, the first electrode layer is connected to the input end of the controller through a first circuit board, and the second electrode layer is connected to the input end of the controller through a second circuit board. Both the first circuit board and the second circuit board are flexible printed circuit boards.

[0076] In some embodiments, the positioning method further includes powering the controller using a battery.

[0077] In some embodiments, the positioning method further includes charging the battery.

[0078] The specific details of the positioning method in the embodiment of the present disclosure are the same as those in the embodiment of the positioning device, and will not be repeated here.

[0079] An embodiment of the present disclosure also provides a positioning system, which includes any one of the positioning devices in the above embodiments.

[0080] Compared with optical positioning solutions such as infrared, the positioning solution disclosed in the present invention can achieve all-weather positioning work, and through temperature calibration, it can achieve stable positioning of target objects under different environments. At the same time, the positioning devices are all made of flexible materials, which is convenient for conformal realization and easy to carry. The positioning device is also equipped with a battery module, so that the positioning device can continue to work for a longer time. This positioning solution can reflect the electromagnetic wave signal sent by the radar, does not actively transmit the signal, has very low power consumption, small radiation to the human body, and low cost; passively reflects radar signals, the signal system can be recognized by the radar, has a positioning effect on different radars, and is simple to operate and easy to use. The positioning solution can be linked with multiple devices. If there are multiple positioning devices, the effects will continue to overlap after working together, forming a larger "flash", greatly increasing the ability to be located.

[0081] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A positioning device, comprising a plurality of antenna units, a controller, a stress sensor and a temperature sensor; the antenna unit comprises a phase adjustment component and a radiation component electrically connected to the phase adjustment component; the phase adjustment component comprises a first substrate and a second substrate arranged opposite to each other, a first electrode layer arranged on a side of the first substrate close to the second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and an adjustable dielectric layer located between the first electrode layer and the second electrode layer; wherein, The temperature sensor is configured to detect the current external environment temperature; the stress sensor is configured to detect the current stress of the phase adjustment component; The controller is configured to adjust a first bias voltage loaded on the first electrode layer and a second bias voltage loaded on the second electrode layer based on the current external environment temperature and the current stress of the phase adjustment component.

2. The device according to claim 1, characterized in that The device also includes: a state switch configured to control the working mode of the positioning device and send the working mode to the controller; The controller is further configured to determine a first bias voltage applied to the first electrode layer and a second bias voltage applied to the second electrode layer based on the working mode.

3. The device according to claim 2, characterized in that The first bias voltage is a first pulse signal including a first voltage and a second voltage alternately, and the second bias voltage is a second pulse signal including a third voltage and a fourth voltage alternately; The first pulse signal and the second pulse signal have a phase difference of 180°; When the working mode is the low power consumption mode, the voltage difference between the first voltage and the third voltage is not equal to the voltage difference between the second voltage and the fourth voltage; When the working mode is the fast search mode, the voltage difference between the first voltage and the third voltage is equal to the voltage difference between the second voltage and the fourth voltage.

4. The device according to claim 3, characterized in that In the low power consumption mode, the duty ratio of the first pulse signal and the second pulse signal in each pulse period ranges from 1 / 9 to 9.

5. The device according to claim 1, characterized in that The controller is further configured to store stress calibration data for adjusting different stresses to voltage-phase of a reference stress at a standard temperature and temperature calibration data for adjusting different temperatures to voltage-phase of a standard temperature under a standard stress; The controller is specifically configured to receive the current stress of the phase adjustment component, and adjust the first bias voltage loaded by the first electrode layer to a first intermediate bias voltage and the second bias voltage loaded by the second electrode layer to a second intermediate bias voltage according to the current stress of the phase adjustment component through the stress calibration data; The controller is further specifically configured to receive the temperature of the current external environment, and adjust the first intermediate bias voltage and the second intermediate bias voltage according to the temperature of the current external environment through the temperature calibration data.

6. The device according to claim 1, characterized in that The phase adjustment component also includes a first circuit board and a second circuit board. The first electrode layer is connected to the input end of the controller through the first circuit board, and the second electrode layer is connected to the input end of the controller through the second circuit board. The first circuit board and the second circuit board are both flexible printed circuit boards.

7. The device according to claim 1, characterized in that The first substrate and the second substrate are both flexible substrates.

8. The device according to claim 1, characterized in that The device also includes: A battery is configured to power the controller.

9. The device according to claim 8, characterized in that The device also includes: A charging module is configured to charge the battery.

10. The device according to claim 1, characterized in that The device also includes: The flexible protective film is arranged on a side of the first substrate away from the adjustable intermediate dielectric layer.

11. The positioning device according to claim 10, characterized in that: The flexible protective film is provided with a flexible film and elastic fibers in sequence along a direction away from the first substrate.

12. A positioning method, characterized in that: The method is applied to a positioning device, which includes a plurality of antenna units, a controller, a stress sensor, and a temperature sensor; the antenna unit includes a phase adjustment component and a radiation component electrically connected to the phase adjustment component; the phase adjustment component includes a first substrate and a second substrate arranged opposite to each other, a first electrode layer arranged on a side of the first substrate close to the second substrate, a second electrode layer arranged on a side of the second substrate close to the first substrate, and an adjustable dielectric layer located between the first electrode layer and the second electrode layer; the method includes: The temperature sensor detects the current external environment temperature; the stress sensor detects the current stress of the phase adjustment component; The controller adjusts a first bias voltage applied to the first electrode layer and a second bias voltage applied to the second electrode layer based on the current ambient temperature and the current stress of the phase adjustment component.

13. A positioning system, characterized in that: The system comprises the positioning device according to any one of claims 1-11.

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