Wearable detection devices and detection methods

Abstract

This application provides a wearable detection device, applicable to the field of electronic device technology. The wearable detection device includes a first signal generator, a sensor, and a first signal detector. The first signal generator generates a first radio frequency (RF) signal and transmits the first RF signal to the sensor. The sensor generates a first RF response signal based on the object to be detected and the first RF signal, and transmits the first RF response signal to the first signal detector. The first signal detector obtains first information based on the first RF response signal. In this application, the wearable detection device generates the first RF response signal through the sensor. Therefore, the first RF signal does not need to pass through the object to be detected, thereby improving the reliability of the detection results.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to wearable testing devices and testing methods. Background Technology

[0002] To facilitate users' frequent monitoring of their health, integrating health monitoring functions into wearable devices is a future development trend. For example, a signal generator and a signal detector can be integrated into a wristband. The signal generator and detector are symmetrically positioned along the arm. The signal generator generates a terahertz frequency radio frequency signal. The signal detector receives the radio frequency signal transmitted through the arm. The detector converts the transmitted radio frequency signal into transmission information. The wristband generates a spectrum based on the transmission information and uses spectrum analysis technology to analyze the user's health status, such as blood sugar or skin condition.

[0003] However, in practical applications, most substances in the human body have a strong absorption capacity for radio frequency signals in the terahertz band, which reduces the reliability of the detection results. Summary of the Invention

[0004] This application provides a wearable detection device and a detection method. In this application, the wearable detection device generates a first radio frequency response signal through a sensor. Therefore, the first radio frequency signal does not need to pass through the object to be detected, thereby improving the reliability of the detection results.

[0005] This application provides a wearable detection device. The wearable detection device includes a first signal generator, a sensor, and a first signal detector. The first signal generator generates a first radio frequency (RF) signal and transmits the first RF signal to the sensor. The sensor generates a first RF response signal based on a target object and the first RF signal. The target object can be an arm, wrist, skin, blood, or air, etc. When the target object changes, or its state changes, one or more of the phase, amplitude, or frequency range of the first RF response signal may change. The sensor also transmits the first RF response signal to the first signal detector. The first signal detector receives the first RF response signal and obtains first information based on the first RF response signal. The first information is used to obtain the detection result of the target object.

[0006] In one alternative embodiment of the first aspect, the wearable detection device further includes a circulator and a second signal detector. A signal generator is used to transmit a first radio frequency (RF) signal to a sensor via the circulator. The sensor is also used to generate a reflected RF response signal based on the object to be detected and the first RF signal. When the object to be detected changes, or its state changes, one or more of the phase, amplitude, or frequency range of the reflected RF response signal may change. The sensor is also used to transmit the reflected RF response signal to the second signal detector. The second signal detector is used to receive the reflected RF response signal from the circulator and obtain first reflection information based on the reflected RF response signal. The first reflection information is used to obtain the detection result of the object to be detected. By increasing the detection of the reflected RF response signal, the accuracy of the detection result can be improved.

[0007] In one alternative embodiment of the first aspect, the wearable detection device further includes a second signal generator. The second signal generator generates a second radio frequency (RF) signal. The second signal generator transmits the second RF signal to a sensor through the object to be detected. An antenna is disposed on the sensor. The antenna receives the second RF signal and obtains a transmitted RF response signal based on the object to be detected and the second RF signal. The antenna also transmits the transmitted RF response signal to a second signal detector. The second signal detector receives the transmitted RF response signal and obtains transmission information based on the transmitted RF response signal. The transmission information is used to obtain the detection result of the object to be detected. By increasing the detection of the transmitted RF response signal, the accuracy of the detection result can be improved.

[0008] In one alternative embodiment of the first aspect, the wearable detection device further includes a third signal detector. The sensor is also used to reflect a second radio frequency signal toward the object to be detected. The third signal detector is used to receive the reflected second radio frequency signal and obtain second reflection information based on the reflected second radio frequency signal. The second reflection information is used to obtain the detection result of the object to be detected. Wherein, by increasing the detection of the reflected second radio frequency signal, the accuracy of the detection result can be improved.

[0009] In one alternative embodiment of the first aspect, the wearable detection device further includes a combiner. The third signal detector and the first signal detector are the same signal detector. The first signal detector is used to receive a first radio frequency response signal via the combiner. The third signal detector is used to receive a reflected second radio frequency signal via the combiner. By sharing the same signal detector, the cost of the wearable detection device can be reduced.

[0010] In one alternative embodiment of the first aspect, the second signal generator and the first signal generator are the same signal generator. The wearable detection device also includes a radio frequency (RF) switch. During a first time period, the first signal generator outputs a first RF signal through a first output port of the RF switch. During a second time period, the first signal generator outputs a second RF signal through a second output port of the RF switch. The first and second time periods do not overlap. By sharing the same signal generator, the cost of the wearable detection device can be reduced.

[0011] In one alternative embodiment of the first aspect, the first radio frequency signal and the second radio frequency signal have different spectral ranges. The first signal generator and the second signal generator can operate simultaneously, thereby improving detection efficiency. However, if the first radio frequency signal and the second radio frequency signal have the same spectral range, interference may occur between the two signals, thus reducing the reliability of the detection results. Therefore, this application can improve the reliability of the detection results.

[0012] In one alternative embodiment of the first aspect, the wearable detection device further includes a processor. The processor is configured to convert the first information into a first spectrum and convert the first reflection information into a first reflection spectrum. The processor is also configured to obtain a detection result for the object to be detected based on the first spectrum and the first reflection spectrum.

[0013] In one alternative embodiment of the first aspect, the wearable detection device further includes a transceiver. The transceiver is used to send first information to a server and receive detection results of the object to be detected from the server. By placing the spectral analysis process on the server, the accuracy of the detection results can be improved.

[0014] In one alternative embodiment of the first aspect, the wearable detection device further includes a first transmission line and / or a second transmission line. A first signal generator is used to transmit a first radio frequency signal to a sensor via the first transmission line. A first signal detector is used to receive a first radio frequency response signal via the second transmission line. Adding transmission lines increases design flexibility.

[0015] In one alternative embodiment of the first aspect, the sensor includes a hollow waveguide. The fiber core of the first or second transmission line is adapted to a through-hole in the hollow waveguide. In certain scenarios, the user can detach the fiber core from the hollow waveguide, thereby separating the transmission line from the sensor and improving the user experience.

[0016] A second aspect of this application provides a detection method. The detection method includes the following steps: generating a first radio frequency (RF) signal using a first signal generator; transmitting the first RF signal to a sensor using the first signal generator; obtaining a first RF response signal using the sensor; the first RF response signal being obtained based on the object to be detected and the first RF signal; receiving the first RF response signal using a first signal detector; and obtaining first information based on the first RF response signal.

[0017] In an alternative embodiment of the second aspect, a first radio frequency (RF) signal is transmitted to a sensor via a circulator. The detection method further includes the following steps: obtaining a reflected RF response signal via the sensor. The reflected RF response signal is obtained based on the object to be detected and the first RF signal. The reflected RF response signal is transmitted to a second signal detector via a circulator. First reflection information is obtained based on the reflected RF response signal.

[0018] In an alternative embodiment of the second aspect, the detection method further includes the following steps: generating a second radio frequency signal via a second signal generator; transmitting the second radio frequency signal to a sensor through the object to be detected; obtaining a transmitted radio frequency response signal via the sensor's antenna; the transmitted radio frequency response signal being obtained based on the second radio frequency signal; receiving the transmitted radio frequency response signal via a second signal detector; and obtaining transmission information based on the transmitted radio frequency response signal.

[0019] In an alternative embodiment of the second aspect, the detection method further includes the following steps: reflecting a second radio frequency signal towards the object to be detected via a sensor; receiving the reflected second radio frequency signal via a third signal detector; and obtaining second reflection information based on the reflected second radio frequency signal.

[0020] In an alternative embodiment of the second aspect, the third signal detector and the first signal detector are the same signal detector. Transmitting the first radio frequency signal to the sensor via the first signal generator includes transmitting the first radio frequency signal to the sensor via the first signal generator and the combiner. Receiving the reflected second radio frequency signal via the third signal detector includes receiving the reflected second radio frequency signal via the combiner and the third signal detector.

[0021] In an alternative embodiment of the second aspect, the second signal generator and the first signal generator are the same signal generator. The detection method further includes the following steps: in a first time period, receiving a first radio frequency signal from the first signal generator via a radio frequency switch, and outputting the first radio frequency signal through a first output port of the radio frequency switch. In a second time period, receiving a second radio frequency signal from the first signal generator via a radio frequency switch, and outputting the second radio frequency signal through a second output port of the radio frequency switch. The first time period and the second time period do not overlap.

[0022] In one alternative approach of the second aspect, the first radio frequency signal and the second radio frequency signal have different spectral ranges.

[0023] In an alternative embodiment of the second aspect, the detection method further includes the following steps: converting the first information into a first spectrum using a processor, and converting the first reflection information into a first reflection spectrum. The detection result of the object to be detected is then obtained based on the first spectrum and the first reflection spectrum.

[0024] In an alternative embodiment of the second aspect, the detection method further includes the following steps: sending first information to a server via a transceiver; and receiving the detection result of the object to be detected from the server via the transceiver.

[0025] In an alternative embodiment of the second aspect, the wearable detection device further includes a first transmission line and / or a second transmission line. Transmitting a first radio frequency signal to a sensor via a first signal generator includes transmitting the first radio frequency signal to the sensor via the first signal generator and the first transmission line. Receiving a first radio frequency response signal via a first signal detector includes receiving the first radio frequency response signal via the first signal detector and the second transmission line.

[0026] In one alternative embodiment of the second aspect, the sensor includes a hollow waveguide, with the fiber core of the first or second transmission line adapted to the through-hole of the hollow waveguide. Attached Figure Description

[0027] Figure 1 This is a first structural schematic diagram of the wearable detection device provided in the embodiments of this application;

[0028] Figure 2a This is a first structural schematic diagram of the sensor provided in the embodiments of this application;

[0029] Figure 2b for Figure 2a A schematic diagram of the cross-section of the provided sensor;

[0030] Figure 3 This is a second structural schematic diagram of the wearable detection device provided in the embodiments of this application;

[0031] Figure 4 This is a third structural schematic diagram of the wearable detection device provided in the embodiments of this application;

[0032] Figure 5 This is a fourth structural schematic diagram of the wearable detection device provided in the embodiments of this application;

[0033] Figure 6a This is a second structural schematic diagram of the sensor provided in the embodiments of this application;

[0034] Figure 6b for Figure 6a A schematic diagram of the cross-section of the provided sensor;

[0035] Figure 7a This is a third structural schematic diagram of the sensor provided in the embodiments of this application;

[0036] Figure 7b for Figure 7a A top view of the provided sensor;

[0037] Figure 8 This is a flowchart illustrating the detection method provided in the embodiments of this application. Detailed Implementation

[0038] This application provides a wearable detection device and a detection method. In this application, the wearable detection device generates a first radio frequency response signal through a sensor. Therefore, the first radio frequency signal does not need to pass through the object to be detected, thereby improving the reliability of the detection results.

[0039] It should be understood that the terms "first," "second," etc., used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or order. Furthermore, for the sake of brevity and clarity, reference numerals and / or letters are repeated in several figures of this application. This repetition does not indicate a strict limiting relationship between the various embodiments and / or configurations.

[0040] The wearable detection device described in this application is applied to the field of electronic device technology. Integrating health monitoring functions into wearable devices is a future development trend in the field of electronic device technology. However, in practical applications, most substances in the human body have a strong absorption capacity for terahertz frequency radio frequency signals, reducing the reliability of the detection results.

[0041] Therefore, this application provides a wearable detection device. Figure 1 This is a first structural schematic diagram of the wearable detection device provided in the embodiments of this application. For example... Figure 1 As shown, the wearable detection device 100 includes a first signal generator 101, a sensor 102, and a first signal detector 103. The first signal generator 101 generates a first radio frequency signal in the terahertz frequency band and transmits the first radio frequency signal to the sensor 102. The sensor 102 and the object to be detected ( Figure 1(Not shown in the image) Contact. Sensor 102 is used to generate a first radio frequency response signal based on the object to be detected and a first radio frequency signal. The object to be detected can be an arm, finger, leg, or air, etc. When the object to be detected changes, or the state of the object to be detected changes, one or more of the phase, amplitude, or frequency range of the first radio frequency response signal may change. Sensor 102 is also used to transmit the first radio frequency response signal to a first signal detector 103. The first signal detector 103 is used to receive the first radio frequency response signal and obtain first information based on the first radio frequency response signal. The first information may be phase or amplitude information corresponding to multiple frequency points.

[0042] The wearable detection device 100 is used to obtain the detection result of the substance to be detected based on first information. In practical applications, the wearable detection device 100 can obtain the detection result using different methods. For example, the wearable detection device 100 also includes a processor. The processor includes a spectrum synthesizer and an analysis module. The spectrum synthesizer is used to convert the first information into a first spectrum. The analysis module is used to obtain the detection result of the substance to be detected based on the first spectrum. Alternatively, the wearable detection device 100 also includes a transceiver. The transceiver is used to send the first information to a server. The server is used to convert the first information into a first spectrum and obtain the detection result of the substance to be detected based on the first spectrum. The transceiver is also used to receive the detection result of the substance to be detected from the server.

[0043] In practical applications, the first signal generator 101 can be directly connected to the sensor 102, or it can be connected to the sensor 102 via a transmission line. For example, in Figure 1 In this device, the wearable detection device 100 also includes a first transmission line 104. The first transmission line 104 is used to transmit a first radio frequency signal. Similarly, the first signal detector 103 can be directly connected to the sensor 102, or the first signal detector 103 can be connected to the sensor 102 via a transmission line. For example, in Figure 1 The wearable detection device 100 also includes a second transmission line 105. The second transmission line 105 is used to transmit a first radio frequency response signal.

[0044] In this application, when any two connected devices have different mode field sizes, a coupler can be provided between the two devices. For example, a coupler can be included between the first signal generator 101 and the first transmission line 104. The coupler is used to receive a first radio frequency signal from the first signal generator 101 and couple the first radio frequency signal to the first transmission line 104. For example, a coupler can be included between the first signal detector 103 and the second transmission line 105. The coupler is used to receive a first radio frequency response signal from the second transmission line 105 and couple the first radio frequency response signal to the first signal detector 103.

[0045] As described above, sensor 102 is used to generate a first radio frequency response signal based on a first radio frequency signal. The structure of sensor 102 is described below as an example. Figure 2a This is a first structural schematic diagram of the sensor provided in an embodiment of this application. For example... Figure 2a As shown, sensor 102 includes a dielectric 1021 and a metal grid 1022. One end of sensor 102 is connected to a first transmission line. The first transmission line includes a fiber core 1042 and a cladding 1041. The other end of sensor 102 is connected to a second transmission line. The second transmission line includes a fiber core 1052 and a cladding 1051. The dielectric 1021, fiber core 1042, and fiber core 1052 can be a single unit. The dielectric 1021 can be a dielectric fiber, possessing both signal transmission and sensing capabilities.

[0046] Sensor 102 receives a first radio frequency (RF) signal from first transmission line 104. Metal grid 1022 is in contact with the object to be detected. Due to the evanescent wave effect, the first RF signal interacts with the object to be detected. Sensor 102 generates a first RF response signal based on the first RF signal. When the object to be detected changes, or when the state of the object to be detected changes, one or more of the phase, amplitude, or frequency range of the first RF response signal may change. Taking frequency range as an example, metal grid 1022 has selective frequency reflection capability. When the first RF signal is transmitted on sensor 102, most of the energy of the signal in a certain frequency range is reflected. The energy of signals in other frequency ranges will pass through sensor 102. Therefore, a portion of the first RF signal will be reflected back to first transmission line 104. Another portion of the first RF signal will be transmitted to second transmission line 105. The frequency range of the partial RF signal is related to the structural dimensions of metal grid 1022, the properties of medium 1021, etc. When the state of the object to be detected changes, the frequency range of the reflected signal will change. At this time, the frequency range of another part of the radio frequency signal will also change accordingly.

[0047] exist Figure 2b In this context, the first radio frequency (RF) response signal can be a portion of the RF signal reflected back to the first transmission line 104, or it can be another portion of the RF signal transmitted to the second transmission line 105. In the following description, we will use the example of the first RF response signal being another portion of the RF signal. In this case, the portion of the RF signal reflected back to the first transmission line 104 can also be referred to as the reflected RF response signal.

[0048] In practical applications, the metal grid 1022 may only cover a portion of the medium 1021 facing the object to be detected. For example, Figure 2b for Figure 2a A schematic diagram of the cross-section of the provided sensor. (See attached image.) Figure 2bAs shown, sensor 102 includes a medium 1021 and a metal grid 1022. The metal grid 1022 only covers a portion of the surface of the medium 1021. According to the aforementioned... Figure 2a As described above, sensor 102 can also generate a reflected radio frequency response signal based on the first radio frequency signal. To improve the accuracy of the detection results, the wearable detection device can also detect the reflected radio frequency response signal. For example, Figure 3 This is a second structural schematic diagram of the wearable detection device provided in the embodiments of this application. For example... Figure 3 As shown, in Figure 1 Based on this, the wearable detection device 100 also includes a circulator 302 and a second signal detector 301. The first signal generator 101 transmits a first radio frequency (RF) signal to the sensor 102 via the circulator 302. The sensor 102 generates a reflected RF response signal based on the first RF signal. When the object to be detected changes, or its state changes, one or more of the phase, amplitude, or frequency range of the reflected RF response signal may change. The sensor 102 transmits the reflected RF response signal to the circulator 302 via a first transmission line 104. The circulator 302 transmits the reflected RF response signal to the second signal detector 301. The second signal detector 301 obtains first reflection information based on the reflected RF response signal. The first reflection information is phase or amplitude information corresponding to multiple frequency points. The wearable detection device 100 can generate a first reflection spectrum based on the first reflection information. The wearable detection device 100 can obtain the detection result of the object to be detected based on the first reflection spectrum and the first spectrum. In the sensor 102, the transmission directions of the reflected RF response signal and the first RF response signal are opposite.

[0049] According to the foregoing Figure 1 As described above, the wearable detection device can obtain a first spectrum based on the first signal detector 103, and then obtain the detection result of the object to be detected based on the first spectrum. In practical applications, the wearable detection device can also obtain the transmission spectrum of the object to be detected. The wearable detection device obtains the detection result of the object to be detected based on the first spectrum and the transmission spectrum. For example, Figure 4 This is a third structural schematic diagram of the wearable detection device provided in the embodiments of this application. For example... Figure 4 As shown, in Figure 3 In addition to the above, the wearable detection device also includes a second signal generator 401 and a third signal detector 402.

[0050] The second signal generator 401 transmits a second radio frequency (RF) signal through the object to be detected to the sensor 102. The sensor 102 receives the second RF signal and obtains a transmission RF response signal based on it. The sensor 102 also transmits the transmission RF response signal to either the second signal detector 301 or the first signal detector 103. The second signal detector 301 or the first signal detector 103 receives the transmission RF response signal and obtains transmission information based on it. The transmission information consists of phase or amplitude information corresponding to multiple frequency points. In subsequent processing, the wearable detection device 100 can generate a transmission spectrum based on the transmission information. The wearable detection device 100 can then obtain the detection result of the object to be detected based on the transmission spectrum and the first spectrum.

[0051] As described above, the first transmission line 104 can be used to transmit both reflected and transmitted radio frequency (RF) response signals. The reflected RF response signal is obtained from the first RF signal. The transmitted RF response signal is obtained from the second RF signal. When the first and second RF signals have the same spectral range, and the first and second signal generators operate simultaneously, the reflected and transmitted RF response signals may interfere, thus reducing the reliability of the detection results. To improve the reliability of the detection results, the spectral ranges of the first and second RF signals can be different.

[0052] In practical applications, to improve the accuracy of detection results, the wearable detection device 100 can also obtain the reflection spectrum of the object to be detected. For example, in Figure 4 The wearable detection device 100 further includes a third signal detector. The sensor 102 is also used to reflect a second radio frequency signal towards the object to be detected. The third signal detector 402 is used to receive the reflected second radio frequency signal and obtain second reflection information based on the reflected second radio frequency signal. The second reflection information is phase or amplitude information corresponding to multiple frequency points. In subsequent processing, the wearable detection device 100 can generate a second reflection spectrum based on the second reflection information. The wearable detection device 100 can obtain the detection result of the object to be detected based on the second reflection spectrum and the first spectrum.

[0053] To reduce the cost of the wearable detection device 100, the third signal detector and the first signal detector can be the same signal detector. The second signal generator and the first signal generator can also be the same signal generator. For example, Figure 5 This is a fourth structural schematic diagram of the wearable detection device provided in the embodiments of this application. For example... Figure 5As shown, the wearable detection device 100 includes a first signal generator 101, an RF switch 501, a circulator 302, a first transmission line 104, a sensor 102, a second transmission line 105, a combiner 502, a first signal detector 103, and a second signal detector 302.

[0054] In the first time period, the first signal generator 101 outputs a first radio frequency (RF) signal through the first output port of the RF switch 501. The circulator 302 receives the first RF signal and transmits it to the sensor 102 via the first transmission line 104. The sensor 102 generates a first RF response signal and a reflected RF response signal based on the first RF signal and the object to be detected. The sensor 102 transmits the first RF response signal to the first signal detector 103 via the second transmission line 105 and the combiner 502. The first signal detector 103 obtains first information based on the first RF response signal. The sensor 102 transmits the reflected RF response signal to the second signal detector 302 via the first transmission line 104 and the circulator 302. The second signal detector 302 obtains first reflection information based on the reflected RF response signal. In subsequent processing, the wearable detection device can generate a first spectrum based on the first information. The wearable detection device can also generate a first reflection spectrum based on the first reflection information.

[0055] During the second time period, the first signal generator 101 outputs a second radio frequency (RF) signal through the second output port of the RF switch 501. The second RF signal passes through the object to be detected and reaches the sensor 102. The sensor 102 generates a transmitted RF response signal based on the second RF signal. The sensor 102 transmits the transmitted RF response signal to the second signal detector 302 via the first transmission line 104 and the circulator 302. The second signal detector 302 obtains transmission information based on the transmitted RF response signal. The sensor 102 also reflects the second RF signal back to the object to be detected. The first signal detector 103 receives the reflected second RF signal through the combiner 502. The first signal detector 103 obtains second reflection information based on the reflected second RF signal. In subsequent processing, the wearable detection device can generate a second reflection spectrum based on the second reflection information. The wearable detection device can also generate a transmission spectrum based on the transmission information.

[0056] The first and second time periods do not overlap. After obtaining the first spectrum, first reflection spectrum, second reflection spectrum, and transmission spectrum, the wearable detection device can perform joint analysis of the four spectra to obtain the detection results of the object to be detected.

[0057] In some scenarios, users may need to separate the transmission line and the sensor. For example, when the wearable sensing device is a wristband, it can have a pluggable interface for easy wearing. In this case, the pluggable interface can be the interface between the transmission line and the sensor. For example, Figure 6a This is a second structural schematic diagram of the sensor provided in an embodiment of this application. Figure 6a As shown, the sensor includes a hollow waveguide 1023 and a metal grid 1022. One end of the sensor is connected to a first transmission line. The first transmission line includes a fiber core 1042 and a cladding 1041. The other end of the sensor is connected to a second transmission line. The second transmission line includes a fiber core 1052 and a cladding 1051. The through-holes of the hollow waveguide 1023 are adapted to the fiber cores 1052 and 1042. The protrusions of the fiber cores 1052 or 1042 can be inserted into the through-holes of the hollow waveguide 1023. When it is necessary to separate the transmission line and the sensor, the protrusions of the fiber cores 1052 or 1042 can be pulled out of the hollow waveguide 1023. For further description of the sensor, please refer to the foregoing. Figures 1 to 5 The relevant description of sensor 102 is provided in the text.

[0058] In practical applications, to avoid complete reflection of the first radio frequency signal, the metal grid 1022 can cover only a portion of the hollow waveguide 1023. For example, Figure 6b for Figure 6a A schematic diagram of the cross-section of the provided sensor. (See attached image.) Figure 6b As shown, the sensor includes a hollow waveguide 1023 and a metal grid 1022. The metal grid 1022 only covers a portion of the surface of the hollow waveguide 1023.

[0059] Based on the above... Figure 4 or Figure 5 As described above, sensor 102 can obtain a transmitted radio frequency response signal based on the second radio frequency signal. In practical applications, to increase the energy of the transmitted radio frequency response signal, an antenna can be provided on sensor 102. The antenna is used to obtain the transmitted radio frequency response signal based on the second radio frequency signal. For example, Figure 7a This is a third structural schematic diagram of the sensor provided in the embodiments of this application. (As shown...) Figure 7a As shown, the sensor includes a hollow waveguide 1023, a metal cylinder 1025, and an antenna 1024. The metal cylinder 1025 and the antenna 1024 cover the surface of the hollow waveguide 1023. One end of the sensor is connected to a first transmission line. The first transmission line includes a fiber core 1042 and a cladding 1041. The other end of the sensor is connected to a second transmission line. The second transmission line includes a fiber core 1052 and a cladding 1051. The through-holes in the hollow waveguide 1023 are adapted to the fiber cores 1052 and 1042. Figure 7b for Figure 7a A top view of the provided sensor. (e.g.) Figure 7b As shown, antenna 1024 is symmetrically distributed along the centerline of hollow waveguide 1023. Metal cylinders 1025 are distributed on both sides of antenna 1024. Metal cylinders 1025 are used to achieve the aforementioned Figure 2a It functions similarly to the 1022 metal grid. For further description of the sensor, please refer to the aforementioned... Figures 1 to 5 The relevant description of sensor 102 is provided in the text.

[0060] It should be understood that the foregoing description of the wearable detection device provided in this application is exemplary. In practical applications, those skilled in the art can make adaptive modifications to the wearable detection device according to their needs. Adaptive modifications may include one or more of the following.

[0061] exist Figure 2a In this context, the wearable detection device includes a first transmission line and a second transmission line. In practical applications, the wearable detection device may not include either the first or second transmission line. For example, in... Figure 2a In this design, the wearable detection device may not include cladding layers 1041 and 1051, and a metal grid 1022 may be provided at the original cladding layers 1041 and 1051. In this case, the wearable detection device may not include the first transmission line or the second transmission line. The sensor is directly connected to the first signal generator or the first signal detector.

[0062] exist Figure 2a In this embodiment, sensor 102 includes a metal grid 1022. The metal grid 1022 is used to generate a reflected radio frequency (RF) response signal. In practical applications, sensor 102 may not include the metal grid 1022. In this case, the first RF response signal is an RF signal transmitted from sensor 102 to the second transmission line 105. The transmission direction of the first RF response signal is the same as the transmission direction of the first RF signal.

[0063] exist Figure 5 In this context, wearable detection devices can acquire four spectra: a first spectrum, a first reflection spectrum, a second reflection spectrum, and a transmission spectrum. In practical applications, wearable detection devices can selectively acquire multiple spectra from these four. The device can then obtain the detection result for the object being tested based on these multiple spectra.

[0064] For example, multiple spectra include a first spectrum and a transmission spectrum. In this case, the wearable detection device 100 may not include the circulator 302, the second signal detector 301, and the combiner 502. Specifically, in a first time period, the sensor 102 generates a first radio frequency response signal based on a first radio frequency signal. The sensor 102 transmits the first radio frequency response signal to the first signal detector 103 via a second transmission line 105. The first signal detector 103 obtains first information based on the first radio frequency response signal. The wearable detection device 100 obtains a first spectrum based on the first information. In a second time period, the sensor 102 generates a transmission radio frequency response signal based on a second radio frequency signal. The sensor 102 transmits the transmission radio frequency response signal to the first signal detector 103 via the second transmission line 105. The first signal detector 103 obtains transmission information based on the transmission radio frequency response signal. The wearable detection device 100 obtains a transmission spectrum based on the transmission information. The wearable detection device 100 obtains the detection result of the object to be detected based on the transmission spectrum and the first spectrum.

[0065] For example, multiple spectra include a first spectrum and a second reflection spectrum. In this case, the wearable detection device 100 may not include the circulator 302 and the second signal detector 301. Specifically, in a first time period, the sensor 102 generates a first radio frequency response signal based on the first radio frequency signal. The sensor 102 transmits the first radio frequency response signal to the first signal detector 103 via the second transmission line 105 and the combiner 502. The first signal detector 103 obtains first information based on the first radio frequency response signal. The wearable detection device 100 obtains the first spectrum based on the first information. In a second time period, the sensor 102 reflects a second radio frequency signal towards the object to be detected. The first signal detector 103 receives the second reflection information via the combiner 502. The first signal detector 103 obtains the second reflection information based on the reflected second radio frequency signal. The wearable detection device 100 obtains the second reflection spectrum based on the second reflection information. The wearable detection device 100 obtains the detection result of the object to be detected based on the second reflection spectrum and the first spectrum.

[0066] As described above, the wearable detection device 100 may further include a processor or a transceiver. The transceiver is used to send first information to the server. The transceiver may be a wireless radio frequency module. The processor is used to obtain a first spectrum based on the first information. The processor may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor may further include a hardware chip or other general-purpose processor. The aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.

[0067] In other embodiments, the wearable detection device 100 may further include a memory. The memory is used to store first information or a first spectrum. The memory may be volatile memory or non-volatile memory, or may include both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), or flash memory, etc. The volatile memory may be random access memory (RAM).

[0068] The wearable detection device provided in this application has been described above; the detection method provided in this application will be described below. Figure 8 This is a flowchart illustrating the detection method provided in the embodiments of this application. Figure 8 As shown, the detection method includes the following steps.

[0069] In step 801, the wearable detection device generates a first radio frequency (RF) signal via a first signal generator. The first RF signal can be a signal in the terahertz frequency band. The wearable detection device can continuously generate pulse signals of different frequencies over a period of time. These pulse signals of different frequencies constitute the first RF signal. Alternatively, the wearable detection device can directly generate a first RF signal encompassing a certain frequency range at a specific moment.

[0070] In step 802, the wearable detection device obtains a first radio frequency (RF) response signal via a sensor. The first RF response signal is obtained based on the object to be detected and the first RF signal. When the object to be detected changes, or when the state of the object to be detected changes, one or more of the phase, amplitude, or frequency range of the first RF response signal may change.

[0071] In step 803, the wearable detection device obtains first information based on the first radio frequency response signal. In subsequent processing, the wearable detection device can obtain a first spectrum based on the first information, and obtain the detection result of the object to be detected based on the first spectrum.

[0072] It should be understood that the description of the detection method in this application can be referenced to the aforementioned description of the wearable detection device. For example, the wearable detection device can also obtain a reflected radio frequency response signal based on the first radio frequency signal. The wearable detection device can also obtain first reflection information based on the reflected radio frequency response signal. In subsequent processing, the wearable detection device can obtain a first reflection spectrum based on the first reflection information, and obtain the detection result of the object to be detected based on the first reflection spectrum and the first spectrum. As another example, the wearable detection device can also obtain a transmitted radio frequency response signal based on the second radio frequency signal, and obtain transmission information based on the transmitted radio frequency response signal. In subsequent processing, the wearable detection device can obtain a transmission spectrum based on the transmission information, and obtain the detection result of the object to be detected based on the transmission spectrum and the first spectrum.

[0073] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A wearable detection device, characterized in that, The wearable detection device includes a first signal generator, a sensor, and a first signal detector. It further includes a first transmission line and / or a second transmission line, wherein the first transmission line connects the first signal generator and the sensor, and the second transmission line connects the sensor and the first signal detector. The first signal generator is used to generate a first radio frequency signal and transmit the first radio frequency signal to the sensor through the first transmission line; The sensor is used to generate a first radio frequency response signal based on the object to be detected and the first radio frequency signal, and transmit the first radio frequency response signal to the first signal detector through the second transmission line; The first signal detector is used to receive the first radio frequency response signal and obtain first information based on the first radio frequency response signal.

2. The wearable detection device according to claim 1, characterized in that, The wearable detection device also includes a circulator and a second signal detector; The first signal generator is used to transmit the first radio frequency signal to the sensor, including: the signal generator is used to transmit the first radio frequency signal to the sensor through the circulator; The sensor is also configured to generate a reflected radio frequency response signal based on the object to be detected and the first radio frequency signal, and transmit the reflected radio frequency response signal to the second signal detector; The second signal detector is used to receive the reflected radio frequency response signal from the circulator and obtain first reflection information based on the reflected radio frequency response signal.

3. The wearable detection device according to claim 2, characterized in that, The wearable detection device also includes a second signal generator, and the sensor is equipped with an antenna; The second signal generator is used to generate a second radio frequency signal; The second signal generator is used to transmit the second radio frequency signal to the sensor through the object to be detected; The antenna is used to receive the second radio frequency signal, obtain a transmitted radio frequency response signal based on the second radio frequency signal, and transmit the transmitted radio frequency response signal to the second signal detector. The second signal detector is also used to receive the transmitted radio frequency response signal and obtain transmission information based on the transmitted radio frequency response signal.

4. The wearable detection device according to claim 3, characterized in that, The wearable detection device also includes a third signal detector; The sensor is also used to reflect the second radio frequency signal toward the object to be detected; The third signal detector is used to receive the reflected second radio frequency signal and obtain second reflection information based on the reflected second radio frequency signal.

5. The wearable detection device according to claim 4, characterized in that, The wearable detection device also includes a combiner, and the third signal detector and the first signal detector are the same signal detector; The first signal detector is used to receive the first radio frequency response signal, including: the first signal detector is used to receive the first radio frequency response signal through the combiner; The third signal detector for receiving the reflected second radio frequency signal includes: the third signal detector for receiving the reflected second radio frequency signal through the combiner.

6. The wearable detection device according to any one of claims 3 to 5, characterized in that, The second signal generator and the first signal generator are the same signal generator, and the wearable detection device also includes a radio frequency switch; During the first time period, the first signal generator is used to output the first radio frequency signal through the first output port of the radio frequency switch; During the second time period, the first signal generator is used to output the second radio frequency signal through the second output port of the radio frequency switch, and the first time period and the second time period do not overlap.

7. The wearable detection device according to any one of claims 3 to 5, characterized in that, The first radio frequency signal and the second radio frequency signal have different spectral ranges.

8. The wearable detection device according to any one of claims 2 to 4, characterized in that, The wearable detection device also includes a processor; The processor is used to convert the first information into a first spectrum, convert the first reflection information into a first reflection spectrum, and obtain the detection result of the object to be detected based on the first spectrum and the first reflection spectrum.

9. The wearable detection device according to any one of claims 1 to 5, characterized in that, The wearable detection device also includes a transceiver; The transceiver is used to send the first information to the server and receive the detection result of the object to be detected from the server.

10. The wearable detection device according to any one of claims 1 to 5, characterized in that, The sensor includes a hollow waveguide, and the fiber core of the first or second transmission line is adapted to the through-hole of the hollow waveguide.

11. A detection method, characterized in that, include: A first radio frequency signal is generated by a first signal generator; The first radio frequency signal is transmitted to the sensor through the first signal generator and the first transmission line, wherein the first transmission line is used to connect the first signal generator and the sensor. A first radio frequency response signal is obtained through the sensor, and the first radio frequency response signal is obtained based on the object to be detected and the first radio frequency signal. The first radio frequency response signal is received through a first signal detector and a second transmission line, wherein the second transmission line is used to connect the sensor and the first signal detector. First information is obtained based on the first radio frequency response signal.

12. The detection method according to claim 11, characterized in that, Transmitting the first radio frequency signal to the sensor via the first signal generator includes: transmitting the first radio frequency signal to the sensor via the first signal generator and the circulator; The method further includes: The sensor obtains a reflected radio frequency response signal, which is derived from the object to be detected and the first radio frequency signal. The reflected radio frequency response signal is transmitted to the second signal detector through the circulator; The first reflection information is obtained based on the reflected radio frequency response signal.

13. The detection method according to claim 12, characterized in that, The method further includes: A second radio frequency signal is generated by a second signal generator; The second radio frequency signal is transmitted to the sensor through the object to be detected; The transmitted radio frequency response signal is obtained through the antenna of the sensor, and the transmitted radio frequency response signal is obtained based on the second radio frequency signal; The transmitted radio frequency response signal is received by the second signal detector; Transmission information is obtained based on the transmitted radio frequency response signal.

14. The detection method according to claim 13, characterized in that, The method further includes: The sensor reflects the second radio frequency signal back to the object to be detected; The reflected second radio frequency signal is received by a third signal detector; The second reflection information is obtained based on the reflected second radio frequency signal.

15. The detection method according to any one of claims 12 to 14, characterized in that, The method further includes: The processor converts the first information into a first spectrum and the first reflection information into a first reflection spectrum. The detection result of the object to be detected is obtained based on the first spectrum and the first reflection spectrum.

16. The detection method according to any one of claims 11 to 14, characterized in that, The method further includes: The first information is sent to the server via a transceiver; The transceiver receives the detection results of the object to be detected from the server.

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