Method for carrying out distance auxiliary detection between electrical equipment moving along trolley conductor

Abstract

The invention discloses a method for carrying out distance auxiliary detection between electrical equipment moving along a sliding contact line, which comprises the following steps of: arranging an ultrasonic detection module on each piece of electrical equipment, and mutually transmitting and receiving ultrasonic waves in a cavity of the sliding contact line by utilizing the ultrasonic detection modules of adjacent electrical equipment, the ultrasonic waves are transmitted along the interior of the cavity of the sliding contact line, and the distance between the adjacent electrical equipment is calculated through the time parameters of transmitting and receiving the ultrasonic waves and the propagation speed parameters of the ultrasonic waves, so that the distance between the adjacent electrical equipment is detected. The device can cooperate with the control center to carry out spacing auxiliary detection while the control center controls the safe distance, so that the device and the control center maintain the safe distance between adjacent electrical equipment to play a double insurance role, when the control center breaks down suddenly, it can be ensured that the safe distance is maintained between the adjacent electrical equipment, and the safety of the electrical equipment is ensured. The problem of mutual collision is avoided, and potential safety hazards in work are eliminated.

Description

Technical Field

[0001] This invention relates to a method for detecting spacing, and more particularly to a method for auxiliary detection of spacing between electrical devices moving along a sliding contact line, belonging to the field of safety technology for electrical devices moving along a sliding contact line. Background Technology

[0002] Electrical equipment needs to constantly change position when it is in operation and moving. Traditional cable power supply is prone to tangling, wear and tear, and poses a risk of power outage. The sliding contact line, by laying conductors (such as copper busbars or aluminum alloys) along the track, and in conjunction with the current collectors (brushes) on the equipment, slides to draw power, realizing "power supply while moving" and completely solving the problem of mobile power supply.

[0003] like Figure 1 and Figure 2 As shown, multiple electrical devices 2 move along the sliding contact line 1. Each electrical device 2 has a current collector 3 on its main body. The current collector 3 has two sets of carbon brushes 4, one in front and one in back. The sliding contact line 1 includes a wire body 111 and a cavity 112 inside the wire body 111. The cavity 112 is semi-enclosed and has an opening at the bottom to communicate with the outside. A conductive conductor 113 is provided at the top of the cavity 112. The carbon brushes 4 of the electrical devices 2 extend into the cavity 112 and contact the conductor 113 to supply power to the electrical devices 2.

[0004] The problem with existing technology is that when multiple electrical devices move on the same conductor rail, the safe distance between adjacent electrical devices is generally monitored by the control center. However, when the control center experiences a sudden failure and lacks an effective scheduling or control mechanism, two adjacent electrical devices may still collide with each other, thus posing a potential safety hazard.

[0005] A search revealed no patent documents that are identical or similar to this application.

[0006] In summary, designing a method for auxiliary detection of the distance between electrical devices that move along a sliding contact line, thereby ensuring a safe distance between adjacent electrical devices, avoiding collisions, and eliminating potential safety hazards during operation, is an urgent technical problem to be solved. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to address the deficiencies in the existing technology by providing a method for auxiliary detection of the distance between electrical devices moving along a sliding contact line. This method can coordinate with the control center to perform auxiliary detection of the distance while controlling the safe distance, thus providing a double guarantee for maintaining a safe distance between adjacent electrical devices together with the control center. When the control center experiences a sudden failure, it can also ensure that a safe distance is maintained between adjacent electrical devices, avoiding collisions and eliminating potential safety hazards during operation.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a method for auxiliary detection of the distance between electrical devices moving along a sliding contact line, wherein an ultrasonic detection module is set on each electrical device, and ultrasonic waves are emitted and received by adjacent electrical devices in the cavity of the sliding contact line, so that the ultrasonic waves propagate along the cavity of the sliding contact line. The distance between adjacent electrical devices is calculated by the time parameters of the emission and reception of ultrasonic waves and the propagation speed parameters of ultrasonic waves, thereby detecting the distance between adjacent electrical devices.

[0009] Preferably, the ultrasonic module includes a controller mounted on the main body of the electrical equipment, an ultrasonic signal transmitting and receiving module one mounted on a set of carbon brushes on the current collector of the electrical equipment, and an ultrasonic signal transmitting and receiving module two mounted on another set of carbon brushes on the current collector of the electrical equipment. The ultrasonic module also includes a distance signal output module. The distance signal output module, the ultrasonic signal transmitting and receiving module one, and the ultrasonic signal transmitting and receiving module two are all electrically connected to the controller.

[0010] Preferably, both the ultrasonic signal transmitting and receiving module one and the ultrasonic signal transmitting and receiving module two include an ultrasonic signal transmitting end and an ultrasonic signal receiving end.

[0011] Preferably, the controller includes a time module.

[0012] Preferably, after power-on, when performing distance assistance detection between two adjacent electrical devices, the following specific steps are included: 1) An electrical device, designated as electrical device B, emits an ultrasonic signal at an initial time T0, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. 2) When electrical device A receives the ultrasonic signal, it immediately forwards the ultrasonic signal to electrical device B. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed in the time module of the controller of electrical device A. The controller of electrical device A records the time H0. 3) After receiving the ultrasonic signal, electrical device B immediately forwards the ultrasonic signal back to electrical device A. The time when electrical device B receives and forwards the signal is recorded as T1. The time T1 is the time displayed in the time module of the controller of electrical device B. The controller of electrical device B records the initial time T1. When step 3) is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. 4) When electrical equipment A receives an ultrasonic signal, the time when the ultrasonic signal is received is recorded as H1. The time H1 is the time displayed by the time module in the controller of electrical equipment A. At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S2 < D2, an alarm is triggered. When performing additional or more interval-assisted detections, simply repeat steps 1) through 4).

[0013] Preferably, after power-on, when performing distance assistance detection between two adjacent electrical devices, the following specific steps are included: S1. An electrical device, designated as electrical device B, emits an ultrasonic signal with an initial time T0 information code at an initial time T0, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. S2. When electrical device A receives an ultrasonic signal with an initial time T0 information code, it immediately forwards the ultrasonic signal with the initial time T0 information code to electrical device B. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed by the time module in the controller of electrical device A, and the controller of electrical device A records the time H0. S3. When electrical device B receives an ultrasonic signal with an initial time T0 information code, it immediately forwards the ultrasonic signal with the initial time T0 information code back to electrical device A. The time when electrical device B receives and forwards the signal is recorded as T1. The time T1 is the time displayed in the time module of the controller of electrical device B. The controller of electrical device B records the initial time T1. When step S3 is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. S4. When electrical equipment A receives an ultrasonic signal with an initial time T0 information code, the time of receiving the ultrasonic signal is recorded as H1, where time H1 is the time displayed in the time module of the controller of electrical equipment A; At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S2 < D2, an alarm is triggered.

[0014] Preferably, in step S4, the controller of electrical equipment A calculates the time T2 displayed in the time module of the controller of electrical equipment B when electrical equipment A receives an ultrasonic signal encoded with initial time T0 information using the following formula: , Once time T2 is calculated, the controller in electrical equipment A modifies the actual time displayed in its own controller's time module to T2, thereby ensuring that in subsequent steps, the time displayed in the time module of electrical equipment A's controller remains consistent with the time displayed in the time module of electrical equipment B's controller.

[0015] Preferably, when the time displayed in the time module of the controller of electrical equipment A is consistent with the time displayed in the time module of the controller of electrical equipment B, and further interval auxiliary detection is required, it is only necessary to cycle through the following steps S5 to S7, that is: S5. Electrical device B emits an ultrasonic signal with time M0 information encoding at time M0, which propagates along the sliding contact line cavity to electrical device A. The controller of electrical device B records time M0. S6. After receiving the ultrasonic signal, electrical device A immediately forwards the ultrasonic signal to electrical device B. The time when electrical device A receives and forwards the signal is recorded as M1. The controller on electrical equipment A can calculate the distance S3 between electrical equipment A and electrical equipment B using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S3, the distance S3 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S3 < D2, an alarm is triggered. S7. When electrical equipment B receives the ultrasonic signal, record the time of receiving the ultrasonic signal as M2. The controller on electrical equipment B can calculate the distance S4 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S4, the distance S4 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S4 < D1, an alarm is triggered.

[0016] The beneficial effects of this invention are as follows: This invention utilizes the cavity of a semi-enclosed circular tube structure sliding contact line as a conductor for ultrasonic wave propagation. An ultrasonic signal transmitting and receiving module is added to the carbon brush of the electrical equipment. The characteristics of ultrasonic signal propagation within the cavity are used for distance-assisted detection. This provides a double guarantee for maintaining a safe distance between adjacent electrical equipment, working in conjunction with the control center. Even in the event of a sudden failure in the control center, it ensures that a safe distance is maintained between adjacent electrical equipment, preventing collisions and eliminating potential safety hazards during operation. By designing specific detection steps, the distance-assisted detection method achieves practicality and reliability. Furthermore, by designing a time correction step between adjacent electrical equipment, the time displayed by the time modules of adjacent electrical equipment is synchronized, further simplifying subsequent distance-assisted detection steps and improving the efficiency of the distance-assisted detection method. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the principle and structure of electrical equipment moving along a sliding contact line in the prior art. Figure 2 This is a cross-sectional view of the carbon brush of an electrical device in the prior art when it extends into the sliding contact line. Figure 3 This is a partial front view of the electrical equipment located at the contact point between the carbon brush and the sliding contact line in Embodiment 1 of the present invention; Figure 4 This is a cross-sectional view of the electrical equipment in Embodiment 1 of the present invention when the carbon brush is inserted into the sliding contact line; Figure 5 This is a schematic diagram of the principle structure of the ultrasonic module in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 1 of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 1 of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 1 of the present invention. Figure 3 ; Figure 9 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 1 of the present invention. Figure 4 ; Figure 10 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 2 ; Figure 12 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 3 ; Figure 13 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 4 ; Figure 14 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 5 ; Figure 15 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 6 ; Figure 16 This is a schematic diagram of the principle steps for spacing-assisted detection in Embodiment 2 of the present invention. Figure 7 In the diagram: 1. Sliding contact line; 111. Line body; 112. Sliding contact line; 113. Conductor; 2. Electrical equipment; 3. Current collector; 4. Carbon brush; 5. Ultrasonic detection module; 511. Controller; 512. Ultrasonic signal transmitting and receiving module one; 513. Ultrasonic signal transmitting and receiving module two; 514. Distance signal output module. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: As Figures 3 to 5 As shown, a method for auxiliary detection of the distance between electrical devices moving along a sliding contact line involves installing an ultrasonic detection module 5 on each electrical device 2. The ultrasonic detection modules 5 of adjacent electrical devices emit and receive ultrasonic waves within the cavity 112 of the sliding contact line 1, allowing the ultrasonic waves to propagate along the cavity 112. The distance between adjacent electrical devices 2 is calculated using the time parameters of the emitted and received ultrasonic waves and the propagation speed parameters, thus enabling the detection of the distance between adjacent electrical devices 2. The sliding contact line is a semi-enclosed circular tube structure. Due to this semi-enclosed circular tube structure, sound waves propagating within the cavity can travel a long distance along the sliding contact line with minimal loss. This embodiment utilizes this characteristic by adding an ultrasonic emission and reception module to the current collector. The emitted ultrasonic waves propagate forward along the cavity of the sliding contact line, and upon contacting the current collector of the preceding device, are reflected back. The distance to the preceding device is calculated using the time. This method is not limited by environmental factors such as bends or external obstacles. The transmitted signal propagates along the internal cavity of the sliding contact line. When the line where the sliding contact line is located bends, the sliding contact line smoothly bends by a certain arc. At this time, the sound waves can be reflected by the cavity of the sliding contact line, thus bypassing the bend and continuing to detect the target. Therefore, this embodiment can ensure a safe distance between adjacent electrical devices. It can coordinate with the control center to perform distance-assisted detection while controlling the safe distance, thus providing a double guarantee for maintaining a safe distance between adjacent electrical devices. In the event of a sudden failure in the control center, it can still ensure that adjacent electrical devices maintain a safe distance, avoiding collisions and eliminating potential safety hazards during operation.

[0020] The ultrasonic module 5 includes a controller 511 mounted on the main body of the electrical equipment 2, an ultrasonic signal transmitting and receiving module 512 mounted on a set of carbon brushes 4 of the current collector 3 of the electrical equipment, and an ultrasonic signal transmitting and receiving module 513 mounted on another set of carbon brushes 4 of the current collector 3 of the electrical equipment. The ultrasonic module 5 also includes a distance signal output module 514. The distance signal output module 514, the ultrasonic signal transmitting and receiving module 512, and the ultrasonic signal transmitting and receiving module 513 are all electrically connected to the controller 511. The ultrasonic signal transmitting and receiving modules extend into the cavity 112 of the sliding contact line 1 along with the carbon brushes 4, thereby enabling the ultrasonic signal to propagate and be received within the cavity 112. The ultrasonic signal transmitting and receiving modules are mounted on both sets of carbon brushes of the electrical equipment, facilitating the transmission and reception of ultrasonic waves between the ultrasonic signal transmitting and receiving modules on adjacent sets of carbon brushes of the two electrical devices during operation. Both the ultrasonic signal transmitting and receiving module 1 and the ultrasonic signal transmitting and receiving module 2 include an ultrasonic signal transmitting end and an ultrasonic signal receiving end.

[0021] The time required for distance detection between two adjacent electrical devices is extremely short, on the order of milliseconds. For example, more than ten signals can be emitted per second for detection. Therefore, distance detection between two adjacent electrical devices can be considered as real-time detection. In addition, because the detection is on the order of milliseconds, when a distance detection is performed, the two adjacent electrical devices can be considered to be relatively stationary.

[0022] In this embodiment, the method for assisting in spacing detection is as follows: After power-on, when assisting in spacing detection is performed between two adjacent electrical devices, the following specific steps are included: 1) such as Figure 6 As shown, an electrical device, designated as electrical device B, emits an ultrasonic signal at an initial time T0, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. 2) For example Figure 7 As shown, when electrical device A receives an ultrasonic signal, it immediately forwards the ultrasonic signal to electrical device B. The time loss between electrical device A receiving and forwarding the signal is negligible. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed in the time module of the controller of electrical device A, and the controller of electrical device A records the time H0. 3) For example Figure 8As shown, when electrical device B receives the ultrasonic signal, it immediately forwards the ultrasonic signal back to electrical device A. The time loss between electrical device B receiving and forwarding the signal is negligible. The time for electrical device B to receive and forward the signal is recorded as T1. The time T1 is the time displayed in the time module of the controller of electrical device B. The controller of electrical device B records the initial time T1. When step 3) is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed of sound in the air, and constant 2 is the number of times the sound travels back and forth between electrical device B and electrical device A; After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. 4) For example Figure 9 As shown, when electrical device A receives an ultrasonic signal, the time when the ultrasonic signal is received is recorded as H1. The time H1 is the time displayed by the time module in the controller of electrical device A. At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: , Where V is the speed of sound in air, and constant 2 is the number of times the sound travels back and forth between electrical device B and electrical device A. After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S2 < D2, an alarm is triggered.

[0023] The reason why electrical devices A and B are calculated separately is that after power-on, due to various reasons, the time H displayed in the time module of the controller of electrical device A is not synchronized with the time T displayed in the time module of the controller of electrical device B, and there is a time difference between them. Therefore, in step 3), when the controller on electrical device B calculates the distance between it and electrical device A, the controller on electrical device A does not know the distance between it and electrical device B. Only in step 4) can the controller on electrical device A calculate the distance between it and electrical device B.

[0024] When performing additional or more interval-assisted detections, simply repeat steps 1) through 4).

[0025] By following the steps above, the safe distance between electrical equipment A and electrical equipment B can be detected and alarmed each time a detection is performed. This ensures that a safe distance is maintained between electrical equipment A and electrical equipment B even if there is a sudden problem in the control center, thus providing a double insurance effect.

[0026] Example 2: Since the detection interval is detected in real time and needs to be repeated continuously during the operation, the applicant designed another technical solution to further simplify the subsequent detection process.

[0027] In this embodiment, the method for assisting in spacing detection is as follows: After power-on, when assisting in spacing detection is performed between two adjacent electrical devices, the following specific steps are included: S1, such as Figure 10 As shown, an electrical device, designated as electrical device B, emits an ultrasonic signal with an initial time T0 information code, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. S2, such as Figure 11 As shown, when electrical device A receives an ultrasonic signal encoded with initial time T0 information, it immediately forwards the ultrasonic signal with initial time T0 information encoding to electrical device B. The time loss between electrical device A receiving and forwarding the signal is negligible. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed by the time module in the controller of electrical device A, and the controller of electrical device A records the time H0. S3, such as Figure 12 As shown, when electrical device B receives an ultrasonic signal encoded with initial time T0 information, it immediately forwards the ultrasonic signal with initial time T0 information encoding back to electrical device A. The time loss between electrical device B receiving and forwarding the signal is negligible. The time when electrical device B receives and forwards the signal is recorded as T1. The time T1 is the time displayed by the time module in the controller of electrical device B. The controller of electrical device B records the initial time T1. When step S3 is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed of sound in air, and constant 2 is the number of times the sound travels back and forth between electrical device B and electrical device A. After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. S4, such as Figure 13 As shown, when electrical device A receives an ultrasonic signal with an initial time T0 information code, it records the time of receiving the ultrasonic signal as H1. The time H1 is the time displayed by the time module in the controller of electrical device A. At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: , Where V is the speed of sound in air, and constant 2 is the number of times the sound travels back and forth between electrical device B and electrical device A. After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. If S2 < D2, an alarm is triggered. The ultrasonic signal encoded with initial time T0 information is encoded into the mechanical energy propagation of the sound wave by modulating the frequency, phase, or pulse interval of the ultrasonic wave. When needed, these features are analyzed by the receiving end to reconstruct the time signal. This is a technical means in the prior art and will not be elaborated here.

[0028] Meanwhile, to address the time difference between the time H displayed in the time module of electrical device A's controller and the time T displayed in the time module of electrical device B's controller after power-on, the controller of electrical device A also corrects the time H displayed in its time module, aligning it with the time T displayed in the time module of electrical device B's controller. Specifically, in this step, the controller of electrical device A calculates the time T2 displayed in the time module of electrical device B's controller when electrical device A receives an ultrasonic signal encoded with initial time T0 information using the following formula: , in, The time required for an ultrasonic wave to travel once between electrical device B and electrical device A is the single time required for the ultrasonic wave to travel from electrical device B to electrical device A. The constant 3 is the number of times the ultrasonic wave travels back and forth between electrical device B and electrical device A in this step when electrical device A receives the ultrasonic wave signal with the initial time T0 information encoding, which is 3 times. That is, when electrical device A receives an ultrasonic signal with initial time T0 information encoding, the total time for the ultrasonic wave to travel back and forth between electrical device B and electrical device A is then added to the total time, and the resulting time is the actual time T2 displayed in the time module of the controller of electrical device B when electrical device A receives the ultrasonic signal with initial time T0 information encoding. Once time T2 is calculated, the controller in electrical equipment A modifies the actual time displayed in its own controller's time module to T2, thereby ensuring that in subsequent steps, the time displayed in the time module of electrical equipment A's controller remains consistent with the time displayed in the time module of electrical equipment B's controller.

[0029] Once the time displayed in the time module of the controller of electrical equipment A is consistent with the time displayed in the time module of the controller of electrical equipment B, if further or multiple interval auxiliary detections are required, simply repeat steps S5 to S7 in a loop, i.e.: S5, such as Figure 14 As shown, electrical device B emits an ultrasonic signal with time M0 information encoding at time M0, which propagates along the sliding contact line cavity to electrical device A. The controller of electrical device B records time M0. S6, such as Figure 15 As shown, when electrical device A receives the ultrasonic signal, it immediately forwards the ultrasonic signal to electrical device B. The time when electrical device A receives and forwards the signal is recorded as M1. The controller on electrical equipment A can calculate the distance S3 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S3, the distance S3 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S3 < D2, an alarm is triggered. S7, such as Figure 16 As shown, when electrical device B receives the ultrasonic signal, the time of receiving the ultrasonic signal is recorded as M2. The controller on electrical equipment B can calculate the distance S4 between electrical equipment B and electrical equipment A using the following formula: , Where V is the speed at which ultrasound travels in the air; After calculating the distance S4, the distance S4 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S4 < D1, an alarm is triggered.

[0030] In summary, this invention utilizes the cavity of a semi-enclosed circular tube sliding contact line as a conductor for ultrasonic wave propagation. An ultrasonic signal transmitting and receiving module is added to the carbon brush of the electrical equipment. The characteristics of ultrasonic signal propagation within the cavity are used for distance-assisted detection. This provides a double guarantee for maintaining a safe distance between adjacent electrical devices, working in conjunction with the control center. Even in the event of a control center malfunction, it ensures a safe distance between adjacent electrical devices, preventing collisions and eliminating potential safety hazards during operation. By designing specific detection steps, the distance-assisted detection method achieves practicality and reliability. Furthermore, by designing a time correction step between adjacent electrical devices, the time displayed on the time modules of adjacent electrical devices is synchronized, further simplifying subsequent distance-assisted detection steps and improving the efficiency of the method.

[0031] The technical solutions of the embodiments of the present invention have been fully described above with reference to the accompanying drawings. The technical solutions of this patent originate from the research project funded by the Hunan Provincial Science and Technology Innovation Program, "The Science and Technology Innovation Program of Hunan Province," project number 2024RC6004. It should be noted that the described embodiments are merely a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A method for auxiliary detection of the spacing between electrical devices moving along a sliding contact line, characterized in that: It involves installing an ultrasonic detection module on each electrical device. The ultrasonic detection modules of adjacent electrical devices emit and receive ultrasonic waves within the cavity of the sliding contact line, allowing the ultrasonic waves to propagate along the cavity of the sliding contact line. The distance between adjacent electrical devices is calculated by using the time parameters of ultrasonic wave emission and reception and the propagation speed parameters of the ultrasonic waves, thereby detecting the spacing between adjacent electrical devices.

2. The method according to claim 1, characterized in that: The ultrasonic module includes a controller mounted on the main body of the electrical equipment, an ultrasonic signal transmitting and receiving module one mounted on a set of carbon brushes on the current collector of the electrical equipment, and an ultrasonic signal transmitting and receiving module two mounted on another set of carbon brushes on the current collector of the electrical equipment. The ultrasonic module also includes a distance signal output module. The distance signal output module, the ultrasonic signal transmitting and receiving module one, and the ultrasonic signal transmitting and receiving module two are all electrically connected to the controller.

3. The method according to claim 2, characterized in that: Both the ultrasonic signal transmitting and receiving module one and the ultrasonic signal transmitting and receiving module two include an ultrasonic signal transmitting end and an ultrasonic signal receiving end.

4. The method according to claim 2, characterized in that: The controller includes a time module.

5. The method according to claim 4, characterized in that: After powering on, when performing auxiliary detection of the distance between two adjacent electrical devices, the following specific steps are included: 1) An electrical device, designated as electrical device B, emits an ultrasonic signal at an initial time T0, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. 2) When electrical device A receives the ultrasonic signal, it immediately forwards the ultrasonic signal to electrical device B. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed in the time module of the controller of electrical device A. The controller of electrical device A records the time H0. 3) After receiving the ultrasonic signal, electrical device B immediately forwards the ultrasonic signal back to electrical device A. The time when electrical device B receives and forwards the signal is recorded as T1. The time T1 is the time displayed in the time module of the controller of electrical device B. The controller of electrical device B records the initial time T1. When step 3) is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. 4) When electrical equipment A receives an ultrasonic signal, the time when the ultrasonic signal is received is recorded as H1. The time H1 is the time displayed by the time module in the controller of electrical equipment A. At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S2 < D2, an alarm is triggered. When performing additional or more interval-assisted detections, simply repeat steps 1) through 4).

6. The method according to claim 4, characterized in that: After powering on, when performing auxiliary detection of the distance between two adjacent electrical devices, the following specific steps are included: S1. An electrical device, designated as electrical device B, emits an ultrasonic signal with an initial time T0 information code at an initial time T0, which propagates along the sliding contact line cavity to another electrical device, designated as electrical device A. The initial time T0 is the time displayed in the time module of the controller of electrical device B, and the controller of electrical device B records the initial time T0. S2. When electrical device A receives an ultrasonic signal with an initial time T0 information code, it immediately forwards the ultrasonic signal with the initial time T0 information code to electrical device B. The time when electrical device A receives and forwards the signal is recorded as H0. The time H0 is the time displayed by the time module in the controller of electrical device A, and the controller of electrical device A records the time H0. S3. When electrical device B receives an ultrasonic signal with an initial time T0 information code, it immediately forwards the ultrasonic signal with the initial time T0 information code back to electrical device A. The time when electrical device B receives and forwards the signal is recorded as T1. The time T1 is the time displayed in the time module of the controller of electrical device B. The controller of electrical device B records the initial time T1. When step S3 is reached, the controller on electrical equipment B can calculate the distance S1 between electrical equipment B and electrical equipment A using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S1, the distance S1 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S1 < D1, an alarm is triggered. S4. When electrical equipment A receives an ultrasonic signal with an initial time T0 information code, the time of receiving the ultrasonic signal is recorded as H1, where time H1 is the time displayed in the time module of the controller of electrical equipment A; At this time, the controller on electrical equipment A can calculate the distance S2 between electrical equipment A and electrical equipment B using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S2, the distance S2 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S2 < D2, an alarm is triggered.

7. The method according to claim 6, characterized in that: In step S4, the controller of electrical equipment A calculates the time T2 displayed in the time module of the controller of electrical equipment B when electrical equipment A receives an ultrasonic signal encoded with initial time T0 information using the following formula: ， Once time T2 is calculated, the controller in electrical equipment A modifies the actual time displayed in its own controller's time module to T2, thereby ensuring that in subsequent steps, the time displayed in the time module of electrical equipment A's controller remains consistent with the time displayed in the time module of electrical equipment B's controller.

8. The method according to claim 7, characterized in that: Once the time displayed in the time module of the controller of electrical equipment A is consistent with the time displayed in the time module of the controller of electrical equipment B, if further or multiple interval auxiliary detections are required, simply repeat steps S5 to S7 in a loop, i.e.: S5. Electrical device B emits an ultrasonic signal with time M0 information encoding at time M0, which propagates along the sliding contact line cavity to electrical device A. The controller of electrical device B records time M0. S6. After receiving the ultrasonic signal, electrical device A immediately forwards the ultrasonic signal to electrical device B. The time when electrical device A receives and forwards the signal is recorded as M1. The controller on electrical equipment A can calculate the distance S3 between electrical equipment A and electrical equipment B using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S3, the distance S3 is compared with the safe distance value D2 preset in the controller on electrical equipment A. When S3 < D2, an alarm is triggered. S7. When electrical equipment B receives the ultrasonic signal, record the time of receiving the ultrasonic signal as M2. The controller on electrical equipment B can calculate the distance S4 between electrical equipment B and electrical equipment A using the following formula: ， Where V is the speed at which ultrasound travels in the air; After calculating the distance S4, the distance S4 is compared with the safe distance value D1 preset in the controller on electrical equipment B. If S4 < D1, an alarm is triggered.

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