A detection system and method for buried device tags

Abstract

The present invention discloses a detection system and method for underground device tags. An operation terminal is used to receive a detection instruction for an underground device tag, and transmit the detection instruction to a signal management component; the signal management component is used to transmit a signal carrier through a transmitting antenna according to the detection instruction, receive each feedback signal of the underground device tag for the signal carrier through three receiving antennas, generate detection information according to each feedback signal, and transmit the detection information to the operation terminal; the operation terminal is used to determine the location information of the underground device tag according to the detection information and the location information of the pre-stored antenna group. The transmission antenna transmits a signal to a receiving antenna symmetrically located at the position of the underground device tag to receive the feedback signal, and positioning is achieved by using the correlation between the intensity and distance of the feedback signal of the underground device tag. Under the condition that the process of transmitting and receiving signals does not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated, and accurate positioning of the underground device is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground device positioning, and in particular to a detection system and method for underground device tags. Background Art

[0002] In the field of underground foundation construction or underground pipeline construction, it is necessary to locate buried devices, such as underground pipelines, to ensure the safety of the construction project.

[0003] There are two main ways to identify buried devices: one is to set warnings on the ground; the other is to add detectable warning objects, such as electronic tags, to buried devices. And due to the rapid development of urban construction, the types and number of underground pipelines are increasing, so electronic tags have become the main basis for detecting buried devices.

[0004] However, when the buried device detection equipment used in the prior art detects the electronic tag of the buried device, due to the single antenna in the equipment, the electronic tag feedback signal obtained by the antenna usually has errors, resulting in inaccurate positioning of the buried device. Summary of the invention

[0005] The present invention provides a detection system and method for underground device tags, so as to ensure that the processes of transmitting and receiving signals do not interfere with each other when positioning the underground device, thereby realizing accurate positioning of the underground device tags.

[0006] In a first aspect, an embodiment of the present disclosure provides a detection system for underground device tags, including:

[0007] A signal management component, an operation terminal and an antenna group connected to the signal management component, wherein the antenna group includes three symmetrical receiving antennas and a transmitting antenna located at the center of the three receiving antennas;

[0008] An operation terminal, used to receive a detection instruction for the buried device tag and transmit the detection instruction to the signal management component;

[0009] The signal management component is used to transmit a signal carrier through a transmitting antenna according to a detection instruction, receive each feedback signal of the buried device tag for the signal carrier through three receiving antennas, generate detection information according to each feedback signal, and transmit the detection information to the operation terminal, wherein the detection information includes the signal strength of each feedback signal;

[0010] The operation terminal is used to determine the location information of the buried device tag according to the detection information and the pre-stored location information of the antenna group.

[0011] In a second aspect, the present disclosure also provides a method for detecting a tag of an underground device, including:

[0012] An operation terminal, used to receive a detection instruction for the buried device tag and transmit the detection instruction to the signal management component;

[0013] The signal management component is used to transmit a signal carrier through a transmitting antenna according to a detection instruction, receive each feedback signal of the buried device tag for the signal carrier through three receiving antennas, generate detection information according to each feedback signal, and transmit the detection information to the operation terminal, wherein the detection information includes the signal strength of each feedback signal;

[0014] The operation terminal is used to determine the location information of the buried device tag according to the detection information and the pre-stored location information of the antenna group.

[0015] The technical solution of the embodiment of the present invention is to transmit a signal to the buried device tag through a transmitting antenna, and receive a feedback signal through a symmetrically positioned receiving antenna, and realize positioning by utilizing the correlation between the intensity and distance of the feedback signal from the buried device tag. Under the condition that the processes of transmitting and receiving signals do not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated, and accurate positioning of the buried device is realized.

[0016] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a detection system for an underground device tag provided in accordance with the first embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of an antenna group structure provided according to Embodiment 1 of the present invention;

[0020] Figure 3 is a schematic diagram of an antenna group positioning process provided according to Embodiment 1 of the present invention;

[0021] Figure 4 is a schematic diagram of the structure of another detection system of an underground device tag provided in Embodiment 2 of the present invention;

[0022] Figure 5is a flow chart of a method for detecting a tag of an underground device provided in accordance with Embodiment 3 of the present invention;

[0023] Figure 6 This is a flow chart of another method for detecting underground device tags provided according to Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Embodiment 1

[0027] Figure 1 A schematic diagram of a detection system structure of an underground device tag is provided for the first embodiment of the present invention. This embodiment is applicable to the situation where an underground device including a tag is located, such as Figure 1As shown, the system includes: a signal management component 120, an operation terminal 110 connected to the signal management component 120, and an antenna group 130, wherein the antenna group 130 includes three symmetrically positioned receiving antennas and a transmitting antenna located at the center of the three receiving antennas; the operation terminal 110 is used to receive a detection instruction for an underground device tag and transmit the detection instruction to the signal management component; the signal management component 120 is used to transmit a signal carrier through the transmitting antenna according to the detection instruction, receive each feedback signal of the underground device tag for the signal carrier through the three receiving antennas, generate detection information according to each feedback signal, and transmit the detection information to the operation terminal 110, wherein the detection information includes the signal strength of each feedback signal; the operation terminal 110 is also used to determine the location information of the underground device tag according to the detection information and the pre-stored location information of the antenna group.

[0028] Among them, the operation terminal 110 refers to the front-end equipment used by the operator for human-computer interaction, which has a human-computer interaction interface and a data processing unit. The user's detection instructions can be received through the human-computer interaction interface, and the detection information fed back by the signal management component can be processed by the data processing unit to obtain the positioning result of the buried device tag; the buried device refers to the underground pipeline, which can be a gas pipeline, a drainage pipeline, a cable pipeline, a steam pipeline, etc. Due to the large number of groundbreaking construction in the city, it is easy to damage the underground pipeline, so a tag is set on the buried device. For example, the tag in the embodiment of the present application can be a radio frequency identification tag (Radio Frequency Identification, RFID). In the detection system of the buried device tag, the antenna group can transmit a radio frequency signal carrier, and the tag can receive the radio frequency signal carrier and respond, and then the correlation between the strength of the tag return signal and the distance can be used to realize the positioning and ranging of the tag, thereby realizing the detection of the buried device tag. Since the tag is set on the buried device, the position of the tag can represent the specific position of the buried device.

[0029] Exemplarily, when the operation terminal 110 receives the detection instruction for the buried device tag, it can be obtained according to the input operation of the user on the human-computer interaction interface, for example, the instruction input port is displayed on the human-computer interaction interface, and the detection instruction is obtained when the user inputs "start tag detection" in the input port; it can also be obtained according to the user triggering the specified button on the human-computer interaction interface, for example, the "start tag detection" button is displayed on the human-computer interaction interface, and the operation terminal obtains the detection instruction according to the user's triggering operation on the button. The operation terminal 110 transmits the detection instruction to the signal management component 120, and the signal management component 120 transmits the signal carrier through the transmitting antenna in the antenna group 130 according to the detection instruction, and then receives the feedback signal of the buried device tag for the signal carrier through the three receiving antennas. The tag receives the transmitted signal carrier and returns the feedback signal for the signal carrier. The signal management component 120 generates detection information with signal strength according to the feedback signal and transmits it to the operation terminal 110, and the operation terminal locates the buried device according to the detection information and the pre-stored antenna group position information.

[0030] Preferably, the three receiving antennas form an equilateral triangle, and each receiving antenna is located at a vertex of the equilateral triangle, the transmitting antenna is located at the center of the equilateral triangle, and the position information of the antenna group includes the position of the center of the equilateral triangle; the operating terminal is used to establish two-dimensional coordinates according to the position information of the antenna group, determine each feedback signal vector according to the detection information in the two-dimensional coordinates, determine a resultant vector according to each feedback signal vector, and determine the position information of the buried device tag according to the resultant vector.

[0031] like Figure 2 The figure shows a schematic diagram of the antenna group structure, wherein the antenna group includes receiving antenna 1, receiving antenna 2, receiving antenna 3 and transmitting antenna, the three receiving antennas form an equilateral triangle, and each receiving antenna is respectively located at the three vertices of the equilateral triangle, the plane where the equilateral triangle is located is used as a positioning plane, and the transmitting antenna is located at the center of the equilateral triangle. In this embodiment, only three receiving antennas are used as an example for illustration, and the number of receiving antennas is not limited. As long as the positions of the receiving antennas contained in the antenna group are symmetrical relative to the transmitting antennas, they are all within the protection scope of this application. When the signal management component receives the detection instruction, it first transmits a signal carrier through the transmitting antenna. After receiving the signal carrier, the buried device tag will send a corresponding feedback signal. The three receiving antennas receive the feedback signal at the same time. The signal management component generates detection information according to each feedback signal and sends it to the operation terminal. The signal strength of each feedback signal is included in the detection information. The operation terminal can measure the distance and locate the tag by using the position information of the antenna group, the correlation between the returned signal strength and the distance.

[0032] Among them, the operating terminal can establish two-dimensional coordinates according to the location information of the antenna group, take the center of the equilateral triangle as the coordinate origin, take the extension line from the center of the equilateral triangle to the receiving antenna 1 as the x-axis, and the vertical x-axis as the y-axis, and use thin dotted lines to represent them respectively, so as to establish two-dimensional coordinates. Finally, the resultant vector is determined at the center by each feedback signal vector, and the location information of the tag can be determined according to the resultant vector, so as to locate the buried device with the tag. Figure 3 The figure shows the schematic diagram of the antenna group positioning process. Figure 3 The figure shows the positioning process of the buried device tag by establishing two-dimensional coordinates and realizing the positioning process according to each feedback signal vector under the constructed two-dimensional coordinates when detecting at three measuring points P1, P2 and P3 respectively. The received signal strength (RSSI) represents the signal strength received at each measuring point. M1, M2 and M3 respectively represent the resultant vector of each antenna feedback signal vector obtained when detecting the tag at each measuring point. The direction of the arrow represents the direction of the vector, and the length of the arrow represents the size, that is, the signal strength value. The solid line represents the size and direction of each feedback signal strength, and the thick dotted line represents each resultant vector.

[0033] For example, when detecting at test point P1, vector M 11 It is the feedback signal vector received by receiving antenna 1 when detecting at measurement point P1. Its direction is the direction from the origin of the coordinate system to receiving antenna 1. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 1. 11 ; Vector M 21 It is the feedback signal vector received by receiving antenna 2 when detecting at measurement point P1. Its direction is the direction from the origin of the coordinate system to receiving antenna 2. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 2. 21 ; Vector M 31 is the feedback signal vector received by receiving antenna 3 when detecting at measurement point P1. Its direction is the direction from the origin of the coordinate system to receiving antenna 3. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 3. 31 ; M1 is the three feedback signal vectors M when detecting at the P1 measurement point 11 、M 21 and M 31 For the P2 measurement point, the vector M 12 It is the feedback signal vector received by receiving antenna 1 when detecting at measurement point P2. Its direction is the direction from the origin of the coordinate system to receiving antenna 1. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 1. 12 ; Vector M 22It is the feedback signal vector received by receiving antenna 2 when detecting at measurement point P2. Its direction is the direction from the origin of the coordinate system to receiving antenna 2. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 2. 22 ; Vector M 32 is the feedback signal vector received by receiving antenna 3 when detecting at measurement point P2. Its direction is the direction from the origin of the coordinate system to receiving antenna 3. Its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 3. 32 ; M2 is the three feedback signal vectors M when detecting at the P2 measurement point 12 、M 22 and M 32 For the P3 measurement point, the vector M 13 is the feedback signal vector of receiving antenna 1 to P3 measurement point, the direction is the direction from the origin of the coordinate system to receiving antenna 1, and the magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 1 13 ; Vector M 23 is the feedback signal vector of receiving antenna 2 to the P3 measurement point, the direction is the direction from the origin of the coordinate system to the receiving antenna 2, and the magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 2 23 ; Vector M 33 is the feedback signal vector of receiving antenna 3 to P3 measurement point, its direction is the direction from the origin of coordinates to receiving antenna 3, and its magnitude is the signal strength RSSI of the feedback signal received by receiving antenna 3 33 ; M3 is the three feedback signal vectors M when detecting the P3 measurement point 13 、M 23 、M 33 The resultant vector of .

[0034] Preferably, the operating terminal is used to take the center of the equilateral triangle as the position of the underground device tag when the resultant vector is determined to be zero; when the resultant vector is determined to be non-zero, determine the moving direction of the detection point according to the direction of the resultant vector, determine the moving distance of the detection point according to the size of the resultant vector, and provide a detection point movement prompt based on the detection point moving direction and the detection point moving distance, so that the user can move to a new detection point according to the prompt to determine the location information of the underground device tag at the new detection point.

[0035] Figure 3In the example, when detecting at the P1 measurement point, the resultant vector of the feedback signal vectors received by the three receiving antennas is M1, and the resultant vector is non-zero at this time. The moving direction of the detection point can be determined according to the direction of M1, and the moving distance of the detection point can be determined according to the size of the resultant vector. For example, when the size of the resultant vector is 3dBm, the moving distance is 50cm, and the operation terminal will prompt the operator to move in the direction and distance required at this time. For example, the human-computer interaction interface prompts: Please move 30cm to the southwest; the user is the operator using the operation terminal. When the operator moves to the P2 measurement point according to the prompt information, the resultant vector of the feedback signal vectors received by the three receiving antennas is M2, and the resultant vector is non-zero at this time. At this time, the user continues to be prompted with the moving direction and moving distance. When the operator moves to the P3 measurement point, the resultant vector of the feedback signal vectors received by the three receiving antennas is M3, and the resultant vector M3 is zero, which means that the buried device tag is detected at the P3 measurement point, and the position of the buried device tag coincides with the original center, that is, the center of the equilateral triangle is used as the position of the buried device tag.

[0036] The technical solution of the embodiment of the present invention is to transmit a signal to the buried device tag through a transmitting antenna, and receive a feedback signal through a symmetrically positioned receiving antenna, and realize positioning by utilizing the correlation between the intensity and distance of the feedback signal from the buried device tag. Under the condition that the processes of transmitting and receiving signals do not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated, and accurate positioning of the buried device is realized.

[0037] Embodiment 2

[0038] Figure 4 A schematic diagram of the structure of a detection system for an underground device tag is provided for the second embodiment of the present invention. This embodiment refines the structure of the signal management component 120 based on the above embodiment, such as Figure 4 As shown, the signal management component 120 specifically includes: a control component 121, a signal transmitting component 122, a signal receiving component 123 and a signal strength detection component 124 respectively connected to the control component 121; wherein the signal receiving component 122 is connected to the signal strength detection component 124, and the signal transmitting component 122 and the signal receiving component 123 are respectively connected to the antenna group 130.

[0039] Among them, the control component 121 controls the signal transmitting component 122, the signal receiving component 123 and the signal strength detecting component 124; the signal strength detecting component 124 is connected to the signal receiving component 122 and detects the strength of the signal received by it; the signal transmitting component 122 and the signal receiving component 123 are respectively connected to the antenna group 130, and control the antenna group 130 to transmit and receive signals.

[0040] Preferably, the operation terminal 110 is used to transmit the detection instruction to the control component 121 through the digital interface; the control component 121 is used to generate a transmission instruction according to the detection instruction, and transmit the transmission instruction to the signal transmission component 122, wherein the transmission instruction includes a transmission signal parameter and a transmission channel matched with the transmission antenna; the signal transmission component is used to generate a signal carrier according to the transmission signal parameters, and transmit the signal carrier through the transmission antenna based on the transmission channel.

[0041] Among them, the detection instruction refers to the instruction issued by the operator to detect the buried device, and the digital interface is an interface that outputs data to the data connection line during data transmission, for example, including Universal Synchronous / Asynchronous Receiver / Transmitter (USART), Universal Asynchronous Receiver / Transmitter (UART), General-Purpose Interface Bus (GPIB), and the specific type of digital interface is not limited in this embodiment. The operation terminal 110 can transmit the detection instruction to the control component 121 in the signal management component through the digital interface. After receiving the detection instruction, the control component 121 will generate a transmission instruction, which includes: transmission signal parameters, and a transmission channel matched with the transmission antenna. The transmission signal parameters include basic information of the transmission signal such as frequency and amplitude. The transmission channel refers to the transmission frequency band. Each antenna has a transmission channel matched with it, which can ensure that the transmitting antenna does not affect each other when transmitting the signal carrier and the three receiving antennas receive the feedback signal. The control component 121 transmits the transmission instruction to the signal transmission component 122, and the signal transmission component 122 can generate a signal carrier according to the received transmission signal parameters. After the signal transmission component 122 generates the signal carrier, it transmits the signal carrier through the transmission antenna according to the corresponding transmission channel.

[0042] Preferably, the control component 121 is also used to generate a receiving indication within a specified time range for generating a transmitting indication, and transmit the receiving indication to the signal receiving component; the signal receiving component 123 is used to receive each feedback signal of the buried device tag for the signal carrier through three receiving antennas according to the receiving indication, extract the antenna identification and signal energy of each feedback signal, and transmit the antenna identification to the control component 121, and transmit the signal energy to the signal strength detection component 124.

[0043] Among them, after the signal transmitting component 122 transmits a signal, the control component 121 can determine a specific designated time range according to the internal configuration file, for example, it can be 100us, and the configuration file can be set to periodically send a receiving indication 100us after the signal is transmitted, that is, 100us after the control component 121 generates a transmitting indication, it generates a receiving indication according to the configuration file, and transmits the receiving indication to the signal receiving component 123. The buried device tag will generate a feedback signal for the signal carrier, and the feedback signal includes an antenna identifier and signal energy. The antenna identifier is used to determine which antenna specifically receives the feedback signal. The signal receiving component 123 will transmit the antenna identifier to the control component 121 and transmit the signal energy to the signal strength detection component 124.

[0044] Preferably, the signal strength detection component 124 is used to detect the signal energy to determine the signal strength of each feedback signal, and transmit each signal strength to the control component 121; the control component 121 is used to associate the antenna identifier and the signal strength to generate detection information, and transmit the detection information to the operation terminal 110.

[0045] Among them, the signal energy includes the signal strength of the feedback signal, and the signal strength detection component 124 determines the specific value of the signal strength by detecting the feedback signal energy. After the detection is completed, the specific value of the signal strength is sent to the control component 121. The control component 121 will associate the antenna identifier and the signal strength to generate detection information. For example, if the signal strength of the feedback signal received by the receiving antenna 1 is -20dB, the control component 121 will associate the two to generate detection information and transmit the detection information to the operation terminal 110.

[0046] Preferably, the operation terminal 110 is further used to generate a prompt indicating that the underground device tag detection is completed when the location of the underground device tag is detected, and to display the prompt indicating that the detection is completed on the human-computer interaction interface.

[0047] When the location of the buried device tag is detected, the operation terminal will generate a tag detection completion prompt. In order to facilitate the operator to know, the detection completion prompt will also be displayed on the human-computer interaction interface. The human-computer interaction interface refers to the user interface of the operator, which is the medium for transmitting and exchanging information between the operator and the system. For example, the prompt content is "The buried device is detected successfully."

[0048] The technical solution of the embodiment of the present invention is to transmit a signal to the buried device tag through a transmitting antenna, and receive a feedback signal through a symmetrically positioned receiving antenna, and realize positioning by utilizing the correlation between the strength of the feedback signal from the buried device tag and the distance. In the case that the processes of transmitting and receiving signals do not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated, and at the same time, the difference in the strength of the tag return signal generated by the distributed structure of the receiving antenna of the antenna group is utilized to realize accurate positioning of the buried device.

[0049] Embodiment 3

[0050] Figure 5 This is a flow chart of a method for detecting a buried device tag provided in Embodiment 3 of the present invention. Figure 5 As shown, the method specifically includes:

[0051] S310: The operating terminal receives a detection instruction for the underground device tag, and transmits the detection instruction to the signal management component.

[0052] Specifically, the operation terminal receives the detection instruction issued by the operator through the human-computer interaction interface, and transmits the detection instruction to the signal management component. After receiving the detection instruction, the control component in the signal management component generates a transmission instruction to the signal transmission component. The transmission instruction includes the transmission signal parameters and the transmission channel matched with the transmission antenna. Among them, the signal management component includes: a control component, a signal transmission component, a signal receiving component and a signal strength detection component. Among them, the operation terminal is connected to the control component in the signal management component, and the control component is respectively connected to the signal transmission component, the signal receiving component and the signal strength detection component. The signal transmission component and the signal receiving component are respectively connected to the antenna group, and the signal receiving component is connected to the signal strength detection component.

[0053] S320, the signal management component transmits a signal carrier through a transmitting antenna according to the detection instruction, receives each feedback signal of the buried device tag for the signal carrier through three receiving antennas, generates detection information according to each feedback signal, and transmits the detection information to the operation terminal.

[0054] The detection information includes the signal strength of the feedback signal.

[0055] Specifically, the signal transmitting component in the signal management component generates a signal carrier according to the transmission indication, and then transmits the signal carrier through the transmitting antenna at the center of the equilateral triangle according to the corresponding transmission channel. The control component generates a receiving indication within the specified time range of generating the transmission indication and transmits it to the signal receiving component. The control component can determine the specified time range according to the internal configuration file, for example, it can be 100us. The configuration file can be set to periodically send the receiving indication 100us after the transmission signal, that is, 100us after the control component generates the transmission indication, the configuration file generates the receiving indication, and transmits the receiving indication to the signal receiving component in the signal management component. Then, the signal receiving component receives each feedback signal of the buried device tag for the signal carrier through three receiving antennas according to the receiving indication, extracts the antenna identification and signal energy in each feedback signal, and transmits the antenna identification to the control component, and transmits the signal energy to the signal strength detection component; the signal strength detection component in the signal management component detects the signal energy to determine the signal strength of each feedback signal, and transmits each signal strength to the control component; finally, the control component associates the antenna identification and signal strength to generate detection information, and transmits the detection information to the operation terminal.

[0056] S330: The operating terminal determines the location information of the underground device tag according to the detection information and the pre-stored location information of the antenna group.

[0057] Among them, the operating terminal can determine the moving distance of the detection point according to the size of the resultant vector, and when the resultant vector is determined to be zero, the center of the equilateral triangle is used as the position of the buried device tag; when the resultant vector is determined to be non-zero, the moving direction of the detection point is determined according to the direction of the resultant vector, and the detected moving distance is determined according to the size of the resultant vector, and the detection point movement prompt is given according to the moving direction and moving distance of the detection point, so that the user can move to the new detection point according to the prompt, so as to determine the location information of the buried device tag at the new detection point. For the specific method of determining the location information of the buried device tag, please refer to the relevant content in the above-mentioned embodiment one or implementation two.

[0058] The technical solution of the embodiment of the present invention is to transmit a signal to the buried device tag through a transmitting antenna, and receive a feedback signal through a symmetrically positioned receiving antenna, and realize positioning by utilizing the correlation between the intensity and distance of the feedback signal from the buried device tag. Under the condition that the processes of transmitting and receiving signals do not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated, and accurate positioning of the buried device is realized.

[0059] Embodiment 4

[0060] Figure 6 This is a flow chart of a method for detecting a buried device tag provided in Embodiment 4 of the present invention. Figure 6As shown, the specific contents of step S410 to step S430 are substantially the same as those of step S310 to step S330 in implementation 3, and thus will not be described in detail in this implementation. The method specifically includes:

[0061] S410: The operating terminal receives a detection instruction for the underground device tag, and transmits the detection instruction to the signal management component.

[0062] S420, the signal management component transmits a signal carrier through a transmitting antenna according to the detection instruction, receives each feedback signal of the buried device tag for the signal carrier through three receiving antennas, generates detection information according to each feedback signal, and transmits the detection information to the operation terminal.

[0063] S430: The operating terminal determines the location information of the underground device tag according to the detection information and the pre-stored location information of the antenna group.

[0064] S440: When the location of the underground device tag is detected, a prompt indicating that the underground device tag detection is completed is generated, and the prompt indicating that the detection is completed is displayed on the human-computer interaction interface.

[0065] Specifically, when the location of the buried device tag is detected, the operation terminal will generate a tag detection completion prompt. In order to facilitate the operator to know, the detection completion prompt will also be displayed on the human-computer interaction interface. The human-computer interaction interface refers to the user interface of the operator, which is the medium for transmitting and exchanging information between the operator and the system. For example, the prompt content is "The buried device detection is successful."

[0066] The technical solution of the embodiment of the present invention uses a transmitting antenna to transmit a signal to the buried device tag, and a symmetrically positioned receiving antenna to receive a feedback signal, and uses the correlation between the strength of the feedback signal from the buried device tag and the distance to achieve positioning. In the case where the process of transmitting and receiving signals does not interfere with each other, the error of the feedback signal during positioning with a single antenna is eliminated to achieve accurate positioning of the buried device. When the position of the buried device tag is detected, the generated detection completion prompt is displayed on the human-computer interaction interface, so that the detection result can be promptly notified to the user, so as to further improve the user experience.

[0067] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0068] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0069] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A detection system for buried device tags, characterized in that: include: A signal management component, an operation terminal and an antenna group connected to the signal management component, wherein the antenna group includes three symmetrical receiving antennas and a transmitting antenna located at the center of the three receiving antennas, and the signal management component includes: a control component, a signal transmitting component, a signal receiving component and a signal strength detection component respectively connected to the control component, wherein the signal receiving component is connected to the signal strength detection component, and the signal transmitting component and the signal receiving component are respectively connected to the antenna group; The operation terminal is used to receive a detection instruction for the buried device tag and transmit the detection instruction to the signal management component; The signal transmitting component is used to transmit a signal carrier through the transmitting antenna according to a transmission instruction generated by the control component based on the detection instruction, wherein the transmission instruction includes a transmission signal parameter and a transmission channel matched with the transmitting antenna; The signal receiving component is used to receive each feedback signal of the buried device tag for the signal carrier through three receiving antennas according to the receiving instruction generated by the control component, and extract the antenna identification and signal energy of each feedback signal; The signal strength detection component is used to detect the signal energy to determine the signal strength of each feedback signal; The control component is used to associate the antenna identifier with the signal strength to generate detection information, and transmit the detection information to the operation terminal, wherein the detection information includes the signal strength of each feedback signal; The operation terminal is also used to establish two-dimensional coordinates according to the location information of the antenna group, determine each feedback signal vector in the two-dimensional coordinates according to the detection information, determine a resultant vector according to each feedback signal vector, and determine the location information of the buried device tag according to the resultant vector.

2. The system according to claim 1, characterized in that The operation terminal is further used to transmit the detection instruction to the control component through a digital interface; The control component is further configured to transmit the transmission instruction to the signal transmission component after generating the transmission instruction; The signal transmitting component is further used to generate the signal carrier according to the transmission signal parameter, and transmit the signal carrier through the transmitting antenna based on the transmission channel.

3. The system according to claim 1, characterized in that The control component is further configured to generate a receiving indication within a specified time range for generating the transmitting indication, and transmit the receiving indication to the signal receiving component; The signal receiving component is further used to transmit the antenna identifier to the control component and transmit the signal energy to the signal strength detection component after extracting the antenna identifier and the signal energy of each feedback signal.

4. The system according to claim 3, characterized in that The signal strength detection component is further used to transmit each signal strength to the control component after determining the signal strength of each feedback signal.

5. The system according to claim 4, characterized in that The three receiving antennas form an equilateral triangle, and each receiving antenna is located at a vertex of the equilateral triangle. The transmitting antenna is located at the center of the equilateral triangle, and the position information of the antenna group includes the position of the center of the equilateral triangle.

6. The system according to claim 5, characterized in that The operation terminal is used to use the center of the equilateral triangle as the position of the underground device tag when it is determined that the resultant vector is zero; The operation terminal is used to determine the moving direction of the detection point according to the direction of the resultant vector when it is determined that the resultant vector is non-zero, determine the moving distance of the detection point according to the size of the resultant vector, and provide a detection point moving prompt according to the detection point moving direction and the detection point moving distance, so that the user can move to a new detection point according to the prompt to determine the location information of the buried device tag at the new detection point.

7. The system according to any one of claims 1 to 6, characterized in that: The operation terminal is also used to generate a prompt of underground device tag detection completion when the position of the underground device tag is detected, and display the prompt of detection completion on the human-computer interaction interface.

8. A method for detecting an underground device tag, applied to the underground device tag detection system according to any one of claims 1 to 7, characterized in that: include: A signal management component, an operation terminal and an antenna group connected to the signal management component, wherein the antenna group includes three symmetrical receiving antennas and a transmitting antenna located at the center of the three receiving antennas, and the signal management component includes: a control component, a signal transmitting component, a signal receiving component and a signal strength detection component respectively connected to the control component, wherein the signal receiving component is connected to the signal strength detection component, and the signal transmitting component and the signal receiving component are respectively connected to the antenna group; The operation terminal is used to receive a detection instruction for the buried device tag and transmit the detection instruction to the signal management component; The signal transmitting component is used to transmit a signal carrier through the transmitting antenna according to a transmission instruction generated by the control component based on the detection instruction, wherein the transmission instruction includes a transmission signal parameter and a transmission channel matched with the transmitting antenna; The signal receiving component is used to receive each feedback signal of the buried device tag for the signal carrier through three receiving antennas according to the receiving instruction generated by the control component, and extract the antenna identification and signal energy of each feedback signal; The signal strength detection component is used to detect the signal energy to determine the signal strength of each feedback signal; The control component is used to associate the antenna identifier with the signal strength to generate detection information, and transmit the detection information to the operation terminal, wherein the detection information includes the signal strength of each feedback signal; The operation terminal is also used to establish two-dimensional coordinates according to the location information of the antenna group, determine each feedback signal vector in the two-dimensional coordinates according to the detection information, determine a resultant vector according to each feedback signal vector, and determine the location information of the buried device tag according to the resultant vector.

9. The method according to claim 8, characterized in that After the operation terminal determines the location information of the underground device tag according to the detection information and the pre-stored location information of the antenna group, the operation terminal further includes: When the position of the underground device tag is detected, a prompt indicating that the underground device tag detection is completed is generated, and the prompt indicating that the detection is completed is displayed on the human-computer interaction interface.

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