Position measurement device using a UWB antenna

Abstract

The present disclosure provides a position measurement device using UWB antennas, which distinguishes a measurement target located indoors from a measurement target located outdoors based on UWB signals received from a plurality of UWB antennas. The proposed position measurement device includes: a first UWB antenna; a second UWB antenna; a third UWB antenna; a signal processing module that outputs a signal received from the first UWB antenna and UWB signals received from at least one of the second UWB antenna and the third UWB antenna; and a position measurement module that measures the position of the measurement target based on the UWB signals output by the signal processing module.

Description

Technical Field

[0001] The present disclosure relates to a UWB antenna module for receiving Ultra-Wide Band (UWB) signals, and a position measurement device that measures the position of a measurement target using signals received from the UWB antenna module. Background Art

[0002] With the development of various communication technologies in recent years, vehicles provide various convenient functions to drivers by reflecting position information. In other words, the vehicle measures position information such as the distance between the driver and the vehicle, the driver's position, and the vehicle's position through communication, and uses the measured position information to provide various convenient functions to the driver.

[0003] For example, the vehicle provides the following functions: guiding the driver to the path where the vehicle is parked using the driver's position and the vehicle's position; or using the distance between the driver and the vehicle to open the door when the driver approaches the vehicle and lock the door when the driver moves away from the vehicle.

[0004] Conventional vehicles have used Low Frequency (LF) or Radio Frequency (RF) communication to measure driver and position information.

[0005] Recently, technologies for measuring position information using UWB communication have been developed and applied to various fields, and research is underway to apply position measurement technologies using UWB communication to vehicles.

[0006] UWB communication can provide high-precision wireless positioning and communication functions through pulse signals. UWB communication uses a frequency band of approximately 3.1 GHz to 10.6 GHz, and its transmission distance is approximately 10 m to 1 km. UWB communication has excellent time resolution with pulses of several nanoseconds, which is beneficial for distance measurement, and can achieve low power consumption due to its low duty cycle. Therefore, UWB communication is being applied to position measurement fields that require low-speed, position recognition-based application services and position measurement fields with an accuracy of approximately + / - 10 cm.

[0007] However, since the antenna performance varies greatly depending on the directivity of the UWB antenna module and the surrounding environment, UWB communication has a problem that position information cannot be measured under specific conditions. In other words, the problem with the UWB antenna module is that signal loss and multipath fading caused by the influence of vehicle metal parts or the human body in a specific direction can lead to positioning errors and deviations.

[0008] For example, there are the following problems: If the UWB antenna module is placed in the back pocket of a person carrying a remote control key, or when there is another vehicle between the person and the vehicle, signal loss and multipath fading may occur due to the influence of vehicle metal parts or the human body in a specific direction, resulting in errors or deviations in the position information measured through UWB communication. Summary of the Invention

[0009] Technical Problem

[0010] In view of the above situation, the present disclosure is proposed. The purpose of the present disclosure is to provide a position measurement device using a UWB antenna, which distinguishes a measurement target located indoors from a measurement target located outdoors based on UWB signals received from multiple UWB antennas.

[0011] In addition, another purpose of the present disclosure is to provide a position measurement device using a UWB antenna, which measures the position of a measurement target based on the position of the measurement target using signals received from some of the multiple UWB antennas.

[0012] Solution

[0013] To achieve the above object, a position measurement device using a UWB antenna according to an exemplary embodiment of the present disclosure includes: a first UWB antenna configured to send a UWB signal to a UWB tag located at a measurement target or receive a UWB signal from the UWB tag; a second UWB antenna configured to receive a UWB signal output from the UWB tag; a third UWB antenna configured to receive a UWB signal output from the UWB tag; a signal processing module configured to output a signal received from the first UWB antenna and a UWB signal received from at least one of the second UWB antenna and the third UWB antenna; and a position measurement module configured to measure the position of the measurement target based on the UWB signal output from the signal processing module.

[0014] The position measurement module may include: a transmitting end, a first receiving end, and a second receiving end. The signal processing module may include: a first switch configured to switch the first UWB antenna to the transmitting end or the second receiving end in response to a control signal of the position measurement module to form a transmitting path or a receiving path between the first UWB antenna and the position measurement module. At this time, when a transmission signal is received from the position measurement module, the first switch may switch to the transmitting end to form a transmitting path between the first UWB antenna and the position measurement module; when a reception signal is received from the position measurement module, the first switch may switch to the second receiving end to form a receiving path between the first UWB antenna and the position measurement module.

[0015] The signal processing module may further include: a combiner configured to combine the UWB signals received from the second UWB antenna and the third UWB antenna to generate a combined UWB signal and send the combined UWB signal to the first receiving end; or a second switch configured to switch the first receiving end to the second UWB antenna or the third UWB antenna in response to the control signal of the position measurement module.

[0016] The signal processing module may include: a power amplifier configured to amplify the UWB signal output from the position measurement module; a first low-noise amplifier configured to amplify the UWB signal received from the first UWB antenna; a first switch configured to switch the first UWB antenna to the power amplifier or the first low-noise amplifier in response to the control signal of the position measurement module; and a third switch configured to switch the first low-noise amplifier to the second receiving end of the position measurement module and switch the power amplifier to the transmitting end of the position measurement module in response to the control signal of the position measurement module. The signal processing module may further include: a second low-noise amplifier configured to amplify the UWB signal received from the second UWB antenna or the third UWB antenna and send the amplified UWB signal to the second receiving end of the position measurement module; and a second switch configured to switch the second UWB antenna or the third UWB antenna to the second low-noise amplifier in response to the control signal of the position measurement module.

[0017] Advantages of the present invention

[0018] According to the present disclosure, a position measurement device using UWB antennas can distinguish between indoor measurement targets and outdoor measurement targets, and based on the position of the measurement target, use some of the multiple UWB antennas to measure the position of the measurement target, thereby accurately measuring not only the position of the measurement target located outdoors but also the position of the measurement target located indoors.

[0019] In addition, a position measurement device using UWB antennas can combine the signals received from multiple UWB antennas through a combiner, thereby outputting a UWB signal with increased gain.

[0020] In addition, a position measurement device using UWB antennas can use the UWB signal with increased gain to measure the position of the measurement target. Therefore, compared with the switching method, accurate positioning data can be extracted.

[0021] In addition, a position measurement device using UWB antennas can arrange different types or the same type of UWB antennas at intervals from each other. Therefore, compared with traditional UWB positioning technologies, the accuracy of positioning data is improved. Description of the drawings

[0022] Figure 1 It is a schematic diagram illustrating a position measurement device using a UWB antenna according to an exemplary embodiment of the present disclosure.

[0023] Figure 2 and Figure 3 It is an example diagram illustrating the arrangement of a plurality of UWB antennas in a position measurement device using a UWB antenna according to an exemplary embodiment of the present disclosure.

[0024] Figure 4 It is a configuration diagram illustrating a position measurement device using a UWB antenna according to a first exemplary embodiment of the present disclosure.

[0025] Figures 5 to 7 It is an illustration of Figure 4 the UWB antenna.

[0026] Figure 8 It is an illustration of Figure 4 the combiner.

[0027] Figure 9 It is a configuration diagram illustrating a position measurement device using a UWB antenna according to a second exemplary embodiment of the present disclosure.

[0028] Figure 10 It is an improved example diagram illustrating a position measurement device using a UWB antenna according to a second exemplary embodiment of the present disclosure. Detailed Description of the Invention

[0029] Hereinafter, in order to specifically illustrate the present disclosure so that those skilled in the art to which the present disclosure pertains can easily implement the technical spirit of the present disclosure, the most preferred exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings. First, it should be understood that when attaching reference numerals to the components of each drawing, the same components are denoted by the same reference numerals as much as possible even in different drawings. In addition, when describing the present disclosure, if it is determined that a detailed description of a related known configuration or function will obscure the gist of the present disclosure, its detailed description will be omitted.

[0030] Referring to Figure 1 , a position measurement device 100 (hereinafter referred to as the position measurement device) using a UWB antenna 120 according to an exemplary embodiment of the present disclosure is configured to include a plurality of UWB antennas 120, a signal processing module 140, and a position measurement module 160.

[0031] For the position measurement device 100, during positioning, the characteristics of the group delay and fidelity (the frequency ratio between the output signal and the input signal) of the signal are important. Therefore, in order to prevent signal delay, multiple UWB antennas 120 are provided in the position measurement device 100. At this time, the multiple UWB antennas 120 can be arranged parallel to each other, vertically, or combined or individually configured in a non-directional and directional manner. If the multiple UWB antennas 120 are directionally configured, some UWB antennas can be arranged to point indoors, while other UWB antennas can be arranged to point outdoors.

[0032] The multiple UWB antennas 120 can be in the form of a lithographic dipole antenna (LDA), a chip antenna, a flexible printed circuit board (FPCB), or an antenna in package (AiP). At this time, according to the environment and characteristics, the multiple UWB antennas 120 can be configured in the form of the same antenna or in the form of heterogeneous antennas.

[0033] The multiple UWB antennas 120 are arranged and positioned to receive the UWB signal of the UWB tag 10. The signal processing module 140 switches or combines some of the multiple UWB signals received from the multiple UWB antennas 120 and sends these signals to the position measurement module 160. The position measurement module 160 uses the UWB signals switched or combined by the signal processing module 140 to measure the position of the measurement target (i.e., the UWB tag 10). For this purpose, the signal processing module 140 can be configured to include a switch, a combiner, etc.

[0034] For example, referring to Figure 2 and Figure 3 , the signal processing module 140 is installed in a vehicle to measure the position of a measurement target outside the vehicle. The position measurement device 100 is connected to multiple UWB antennas 120a to 120d installed in the vehicle and measures the position of the measurement target based on the UWB signals received from the multiple UWB antennas 120a to 120d.

[0035] The position measurement device 100 measures the position of the driver as the measurement target through UWB communication with the remote control key 12 corresponding to the vehicle. At this time, the position measurement device 100 operates as a UWB anchor point, the remote control key 12 operates as a UWB tag 10, the position measurement device 100 measures the position of the remote control key 12 by communicating with the remote control key 12, and sets the measured position of the remote control key 12 as the position of the measurement target.

[0036] As another example, the position measurement device 100 is installed on a door lock and measures the position of a person as a measurement target located indoors or outdoors by performing UWB communication with a smart key. At this time, the position measurement device 100 measures the position of the smart key and sets the measured position of the smart key as the position of the person as the measurement target.

[0037] Hereinafter, for ease of description of the exemplary embodiments of the present disclosure, the case where the position measurement device 100 is installed in a vehicle will be described as an example. However, the position measurement device 100 is not limited thereto and can also be applied to a building equipped with a door lock or the like.

[0038] In addition, according to the exemplary embodiments of the present disclosure, for ease of description of the present disclosure, it is described that the position measurement device 100 includes, for example, a first UWB antenna 121, a second UWB antenna 122, and a third UWB antenna 123. However, the position measurement device 100 is not limited thereto and can also be configured to include four or more UWB antennas 120.

[0039] Reference Figure 4 , the position measurement device 100 according to the first exemplary embodiment of the present disclosure is configured to include a first UWB antenna 121, a second UWB antenna 122, a third UWB antenna 123, a switch 141, a combiner 142, and a position measurement module 160. Here, the switch 141 and the combiner 142 are included in Figure 1 the signal processing module 140.

[0040] Based on the operation of the switch 141, the first UWB antenna 121 operates as one of a transmitting antenna and a receiving antenna. When operating as a transmitting antenna, the first UWB antenna 121 transmits the UWB signal received from the position measurement module 160 through the switch 141 to the UWB tag 10. When operating as a receiving antenna, the first UWB antenna 121 receives the UWB signal output from the UWB tag 10 and transmits the received UWB signal to the position measurement module 160 through the switch 141.

[0041] The second UWB antenna 122 and the third UWB antenna 123 operate as receiving antennas. The second UWB antenna 122 and the third UWB antenna 123 receive the UWB signal output from the UWB tag 10 and transmit it to the combiner 142. At this time, the second UWB antenna 122 and the third UWB antenna 123 may receive the same UWB signal or UWB signals having different frequencies from the UWB tag 10.

[0042] Reference Figure 5, the first UWB antenna 121, the second UWB antenna 122, and the third UWB antenna 123 can be configured to include a radiation pattern 124, a filter 125, a Low-Noise Amplifier (LNA) 126, and a phase shifter 127.

[0043] Antenna diversity can be classified into space diversity method, frequency diversity method, time diversity method, and polarization diversity method.

[0044] Reference Figure 6 , the space diversity method is a method that uses two or more antennas separated in space.

[0045] The space diversity method is a method of selecting and receiving the best signal by installing two or more antennas at positions with low fading correlation at intervals to improve the fading effect.

[0046] The frequency diversity method is a method of using the fading states of different received electric fields when the frequencies are different. The frequency diversity method is a method in which the fading correlation decreases as the frequency interval increases among two or more frequencies.

[0047] The time diversity method is achieved by repeating the transmission of the same information at regular time intervals, etc. The time diversity method uses interleaving, etc. to prevent burst errors that occur concentratedly in a certain time period.

[0048] Reference Figure 7 , the polarization diversity method is a method of using different fading states when the polarizations are different. The polarization diversity method improves the fading effect by transmitting and receiving two polarizations (vertical polarization, horizontal polarization) respectively.

[0049] The position measurement device 100 according to an exemplary embodiment of the present disclosure includes a plurality of UWB antennas 120 operating in one of the above diversity antenna methods.

[0050] The switch 141 performs a switching operation in response to a control signal from the position measurement module 160. The switch 141 receives one of the transmit signal and the receive signal from the position measurement module 160 as the control signal. The switch 141 forms a transmit path or a receive path between the first UWB antenna 121 and the position measurement module 160 in response to the control signal from the position measurement module 160.

[0051] When receiving the transmit signal, the switch 141 switches to the transmit end (Tx) of the position measurement module 160 to form a transmit path between the first UWB antenna 121 and the position measurement module 160. When receiving the receive signal, the switch 141 switches to the second receive end (Rx2) of the position measurement module 160 to form a receive path between the first UWB antenna 121 and the position measurement module 160.

[0052] The combiner 142 receives UWB signals from the second UWB antenna 122 and the third UWB antenna 123. The combiner 142 combines the received UWB signals to generate a combined UWB signal, and transmits the generated combined UWB signal to the position measurement module 160. At this time, the combiner 142 is connected to the first receiving end (Rx1) of the position measurement module 160, and transmits the combined UWB signal to the position measurement module 160 through the first receiving end (Rx1).

[0053] The combiner 142 combines UWB signals received from multiple UWB antennas 120 (for example, the second UWB antenna 122 and the third UWB antenna 123). The combiner 142 uses one of an equal gain combining method and a maximum ratio combining method to combine the multiple UWB signals.

[0054] The equal gain combining method is a method of summing all corresponding UWB signals using a combining circuit with a fixed phase. The maximum ratio combining method is a method of superimposing multiple input UWB signals to obtain optimal performance and synchronizing them before combining them.

[0055] Reference Figure 8 , the equal gain combining method and the maximum ratio combining method are composed of two antennas and a combiner 142 (i.e., a merger). Therefore, the merger combines the signals received from the two UWB antennas 120a and 120b.

[0056] The position measurement device 100 according to the first exemplary embodiment of the present disclosure uses multiple UWB antennas 120 and a combiner 142 to receive and combine signals by an equal gain combining method and a maximum ratio combining method.

[0057] According to the first exemplary embodiment of the present disclosure, the connection of the second UWB antenna 122 and the third UWB antenna 123 to the combiner 142 has been described as an example, but the present disclosure is not limited thereto, and three or more UWB antennas 120 may also be connected to the combiner 142. At this time, considering the proximity environment between the UWB tag 10 and the position measurement device 100 (i.e., the UWB anchor), the positions and directions of the UWB antennas 120 connected to the combiner 142 are arranged in an optimal position.

[0058] The position measurement module 160 controls the switch 141 to set the mode of the first UWB antenna 121. In other words, the position measurement module 160 sends a control signal to the switch 141 to operate the first UWB antenna 121 in a transmit mode or a receive mode. At this time, the position measurement module 160 sends one of the transmit signal and the receive signal as a control signal to the switch 141. Therefore, when receiving the transmit signal, the switch 141 switches to the transmit end (Tx) of the position measurement module 160 to form a transmit path between the first UWB antenna 121 and the position measurement module 160; when receiving the receive signal, the switch switches to the second receive end (Rx2) of the position measurement module 160 to form a receive path between the first UWB antenna 121 and the position measurement module 160.

[0059] The position measurement module 160 measures the position of the measurement target based on the UWB signal received from the first UWB antenna 121 and the combined UWB signal received from the combiner 142. The position measurement module 160 is configured to include a UWB chipset and measures the position of the measurement target by using methods of measuring position using signals such as two-way ranging (TWR) or angle of arrival (AOA) alone or in parallel.

[0060] Reference Figure 9 , the position measurement device 100 according to the second exemplary embodiment of the present disclosure is configured to include a first UWB antenna 121, a second UWB antenna 122, a third UWB antenna 123, a first switch 143, a second switch 144, and a position measurement module 160.

[0061] The first UWB antenna 121 operates as one of a transmit antenna and a receive antenna based on the operation of the first switch 143. When operating as a transmit antenna, the first UWB antenna 121 sends the UWB signal received from the position measurement module 160 through the first switch 143 to the UWB tag 10. When operating as a receive antenna, the first UWB antenna 121 receives the UWB signal output from the UWB tag 10 and sends the received UWB signal to the position measurement module 160 through the first switch 143.

[0062] The second UWB antenna 122 and the third UWB antenna 123 operate as receive antennas. The second UWB antenna 122 and the third UWB antenna 123 receive the UWB signal output from the UWB tag 10 and send it to the second switch 144. At this time, the second UWB antenna 122 and the third UWB antenna 123 may receive the same UWB signal or UWB signals with different frequencies from the UWB tag 10.

[0063] The first switch 143 performs a switching operation in response to a control signal from the position measurement module 160. The first switch 143 receives one of a transmission signal and a reception signal from the position measurement module 160 as the control signal. In response to the control signal from the position measurement module 160, the first switch 143 forms a transmission path or a reception path between the first UWB antenna 121 and the position measurement module 160.

[0064] When receiving the transmission signal, the first switch 143 switches to the transmitter (Tx) of the position measurement module 160 to form a transmission path between the first UWB antenna 121 and the position measurement module 160. When receiving the reception signal, the first switch 143 switches to the second receiver (Rx2) of the position measurement module 160 to form a reception path between the first UWB antenna 121 and the position measurement module 160.

[0065] The second switch 144 sends one of a plurality of UWB signals to the position measurement module 160 using one of an antenna switching method and a selective combining method. The antenna switching method is a method of receiving a UWB signal by switching an antenna to an antenna having a good reception state among a plurality of UWB antennas 120. The selective combining method is a method of selecting an optimal signal by comparing all different UWB signals received at any given time. To this end, the antenna switching method and the selective combining method are composed of two antennas and one switch (i.e., the second switch 144) to switch (change) the switch to one of the two antennas according to the signal state and receive a signal through the switched antenna.

[0066] The second switch 144 switches to one of the second UWB antenna 122 and the third UWB antenna 123 in response to a control signal from the position measurement module 160. The second switch 144 receives one of a first selection signal and a second selection signal as the control signal. In response to the control signal from the position measurement module 160, the second switch 144 forms a reception path between one of the second UWB antenna 122 and the third UWB antenna 123 and the position measurement module 160.

[0067] When receiving the first selection signal, the second switch 144 switches to the second UWB antenna 122 to form a reception path between the second UWB antenna 122 and the second receiver (Rx2) of the position measurement module 160. When receiving the second selection signal, the second switch 144 forms a reception path between the third UWB antenna 123 and the second receiver (Rx2) of the position measurement module 160. The second switch 144 sends the UWB signal received from the second UWB antenna 122 or the third UWB antenna 123 to the second receiver (Rx2) of the position measurement module 160 through the reception path formed by the switching operation.

[0068] The position measurement module 160 controls the first switch 143 to set the mode of the first UWB antenna 121. In other words, the position measurement module 160 sends a control signal to the first switch 143 to operate the first UWB antenna 121 in a transmission mode or a reception mode. At this time, the position measurement module 160 sends one of a transmission signal and a reception signal as a control signal to the first switch 143. Accordingly, when the transmission signal is received, the first switch 143 switches to the transmission end (Tx) of the position measurement module 160 to form a transmission path between the first UWB antenna 121 and the position measurement module 160; when the reception signal is received, the first switch 143 switches to the second reception end (Rx2) of the position measurement module 160 to form a reception path between the first UWB antenna 121 and the position measurement module 160.

[0069] The position measurement module 160 controls the second switch 144 to select the UWB antenna 120. In other words, the position measurement module 160 sends a control signal to the second switch 144 to form a reception path between one of the second UWB antenna 122 and the third UWB antenna 123 and the position measurement module 160. At this time, the position measurement module 160 sends one of a first selection signal and a second selection signal as a control signal to the second switch 144. Here, the position measurement module 160 may perform a channel impulse response (CIR) analysis on UWB signals received from the second UWB antenna 122 and the third UWB antenna 123, and select one of the second UWB antenna 122 and the third UWB antenna 123 based on the analysis result.

[0070] Accordingly, when the first selection signal is received, the second switch 144 switches to the second UWB antenna 122 to form a reception path between the second UWB antenna 122 and the position measurement module 160; when the second selection signal is received, the second switch 144 switches to the third UWB antenna 123 to form a reception path between the third UWB antenna 123 and the position measurement module 160.

[0071] The position measurement module 160 measures the position of a measurement target based on the UWB signal received from the first UWB antenna 121 and the UWB signal received from the second switch 144. The position measurement module 160 is configured to include a UWB chipset, and measures the position of the measurement target by using a method of measuring a position by using signals such as TWR or AOA alone or in parallel.

[0072] For example, the position measurement module 160 measures the position of a measurement target by i) using TWR distance measurement of UWB signals received via the first UWB antenna 121 and ii) using AOA direction measurement of UWB signals of the first UWB antenna 121 and UWB signals input via the second switch 144 (i.e., UWB signals received via the second UWB antenna 122 or the third UWB antenna 123).

[0073] Meanwhile, referring to Figure 10 , the position measurement device 100 according to an exemplary embodiment of the present invention may also be configured to further include: a power amplifier 145, a first low-noise amplifier 146, a third switch 147 located between the first switch 143 and the position measurement module 160, and a second low-noise amplifier 148 located between the second switch 144 and the position measurement module 160.

[0074] The power amplifier 145 amplifies the UWB signals output from the position measurement module 160. The first low-noise amplifier 146 amplifies the UWB signals received from the first UWB antenna 121. The first switch 143 switches the first UWB antenna 121 to one of the power amplifier 145 and the first low-noise amplifier 146 in response to a control signal from the position measurement module 160. The third switch 147 switches the first low-noise amplifier 146 to the second receiving end (Rx2) of the position measurement module 160 and switches the power amplifier 145 to the transmitting end (Tx) of the position measurement module 160 in response to a control signal from the position measurement module 160. The second low-noise amplifier 148 amplifies the UWB signals received from one of the second UWB antenna 122 and the third UWB antenna 123 and sends them to the second receiving end (Rx2) of the position measurement module 160. The second switch 144 switches one of the second UWB antenna 122 and the third UWB antenna 123 to the second low-noise amplifier 148 in response to a control signal from the position measurement module 160.

[0075] Although the above preferred exemplary embodiments of the present disclosure have been described, the above embodiments can be modified in various forms, and it should be understood that those skilled in the art can make various changes and modifications without departing from the claims of the present disclosure.

Claims

1. A position measurement device, comprising: A first UWB antenna configured to transmit a UWB signal to a UWB tag located on a measurement target or receive a UWB signal from the UWB tag; A second UWB antenna configured to receive a UWB signal output from the UWB tag; A third UWB antenna configured to receive a UWB signal output from the UWB tag; A signal processing module configured to output a UWB signal received from the first UWB antenna and UWB signals received from the second UWB antenna and the third UWB antenna; And A position measurement module configured to measure the position of the measurement target based on the UWB signals output from the signal processing module, Wherein, the signal processing module includes: a combiner configured to combine the UWB signal received from the second UWB antenna with the UWB signal received from the third UWB antenna to generate a combined UWB signal and send the combined UWB signal to the position measurement module, The position measurement module includes: a transmitting end, a first receiving end, and a second receiving end, The signal processing module, in response to a control signal from the position measurement module, switches the first UWB antenna to the second receiving end to form a receiving path between the first UWB antenna and the position measurement module, The signal processing module connects the combiner to the first receiving end to form a receiving path between the combiner and the position measurement module and sends the combined UWB signal to the first receiving end, and The position measurement module measures the position of the measurement target based on the UWB signal received from the first UWB antenna and the combined UWB signal.

2. The position measurement device according to claim 1, wherein, The signal processing module further includes: a first switch configured to switch the first UWB antenna to the transmitting end or the second receiving end in response to a control signal from the position measurement module to form a transmitting path or a receiving path between the first UWB antenna and the position measurement module.

3. The position measurement device according to claim 2, wherein, When a transmission signal is received from the position measurement module, the first switch switches to the transmitting end to form the transmitting path between the first UWB antenna and the position measurement module.

4. The position measurement device according to claim 2, wherein, When a reception signal is received from the position measurement module, the first switch switches to the second receiving end to form the receiving path between the first UWB antenna and the position measurement module.

5. The position measurement device according to claim 1, wherein, The signal processing module further includes: A power amplifier configured to amplify the UWB signal output from the position measurement module; A first low-noise amplifier configured to amplify the UWB signal received from the first UWB antenna; A first switch, configured to switch the first UWB antenna to the power amplifier or the first low noise amplifier in response to a control signal from the position measurement module; and A third switch, configured to switch the first low noise amplifier to a second receiving end of the position measurement module and switch the power amplifier to a transmitting end of the position measurement module in response to a control signal from the position measurement module.

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