Microwave antenna radiation range finder and range finding method

Abstract

The invention discloses a microwave antenna radiation distance measuring instrument and a distance measuring method. The microwave antenna radiation distance measuring instrument comprises a distance measuring instrument front-end device, a plurality of mounting support arms and a control host, the range finder front-end device specifically comprises a control interface, a beacon support and a slide rail. The control host controls the beacon support and the sliding rail through the control interface. The beacon support and the sliding rail are installed between the two rails through the installation supporting arm. According to the invention, the microwave antenna radiation range finder is installed on a track below a locomotive head TI antenna, when a signal system TI host reads a beacon, a LOCK signal of a signal of the TI host is received, and a screw device is driven by a control motor to move the beacon, so that the purpose of automatically and accurately testing a window in a visual display mode is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit positioning, and in particular to a microwave antenna radiation rangefinder and a ranging method. Background Art

[0002] The rail transit train positioning system requires that the actual identification window of each locomotive be as consistent as possible with the design window. Due to actual engineering, there are individual differences from the TI host, external attenuator, microwave cable, antenna and other links, which in turn form cumulative errors, making the actual identification window of each locomotive inconsistent with the design window. When the deviation between the actual window and the design window exceeds a certain range, it may cause a certain degree of label loss.

[0003] At present, the method of measuring the antenna recognition beacon window is manual measurement. The beacon is placed under the antenna, moved manually, and the status of the on-board equipment is used to determine whether the beacon is read, thereby calculating the antenna RF radiation distance. However, the manual method has disadvantages such as inconvenient operation, high technical requirements, and large measurement errors. Since there are definitely various actual work differences between projects and between locomotives in the same project, in order to make the actual window of each locomotive consistent or nearly consistent with the design window, there is an urgent need for a means to complete the inspection and precise debugging of each locomotive before the locomotive goes online. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a microwave antenna radiation rangefinder, comprising a rangefinder front-end device, a plurality of mounting arms and a control host; the rangefinder front-end device specifically comprises: a control interface, a beacon bracket and a slide rail; the control host controls the beacon bracket and the slide rail through the control interface; the beacon bracket and the slide rail are installed between two rails through the mounting arms; wherein the beacon bracket and the slide rail specifically comprise: a beacon and a beacon bracket, and a linear slide rail; the beacon and the beacon bracket are installed on the linear slide rail and are controlled by the control host.

[0005] Furthermore, there are arm mounting holes at both ends of the linear slide rail for fixing the mounting arm; there is a downward notch on the side of the mounting arm close to the rail for snapping onto the rail through the notch during installation.

[0006] Furthermore, the mounting arm specifically includes: an adjusting tube a, an arm a, an arm b, an adjusting tube b, an arm c, and an arm d; the arm a, arm b, arm c, and arm d are respectively arranged at both ends of the front end device of the rangefinder; the mounting arm adjusts the arm length by adjusting the adjusting tube a and the adjusting tube b respectively.

[0007] Furthermore, the working voltage of the control host is DC24V or AC220V; the motor control mode of the control host includes inching mode and linkage mode; there is a lock signal light on the control host, and the light turns on when the locomotive lock signal is received through the beacon bracket and the slide rail.

[0008] Furthermore, the control interface is connected to the control host via a 4-core aviation socket and a connecting line; the control interface has a built-in stepping motor for rotating the slide rail sliding beacon.

[0009] A microwave antenna radiation ranging method comprises the following steps: S1. making a preliminary prediction of the range of a radio frequency window to be measured; S2. supplying power to a microwave antenna radiation ranging instrument, and turning on a locomotive host to be detected and the microwave antenna radiation ranging instrument; S3. initializing the microwave antenna radiation ranging instrument, and performing accurate ranging and counting of the radio frequency window of the locomotive.

[0010] Furthermore, the ranging counting in the step S3 specifically includes the following sub-steps: S31. The beacon and the beacon bracket move in the original direction; S32. Observe the locking signal light on the locomotive and measure the size of the radio frequency window: when the locking signal light is off, control the beacon and the beacon bracket to move in the opposite direction, and when the locking signal light is on and stable, record and measure the size of the radio frequency window of the locomotive.

[0011] Furthermore, the radio frequency window range for ranging in step S3 is 0-750 mm.

[0012] Furthermore, when the RF window range is greater than 750mm, a secondary measurement of the RF window is required, and the secondary measurement ranging method specifically includes the following steps: when the beacon and the beacon bracket move to one end of the linear slide rail, the locking signal light is still not off, the movement of the beacon and the beacon bracket is stopped and the current measurement data is recorded, the beacon and the beacon bracket are reversed and initialized, and then the counting is started.

[0013] Furthermore, when the RF window range is greater than 750mm, it is specifically divided into two parts: when the RF window range is greater than 750mm and ≤1500mm, since the RF window is completely symmetrical, the distance from the center position of the microwave antenna to the edge of the RF window at one end is measured using a beacon and a beacon bracket, and then the measured distance is multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna; when the RF window range is greater than 1500mm, the RF window distance on one side is measured in sections with the center position of the microwave antenna as the boundary, and the distance of each section is added and multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna.

[0014] The present invention provides a microwave antenna radiation rangefinder and a ranging method, which have the following beneficial effects: The present invention installs a microwave antenna radiation rangefinder on the track below the TI antenna of the locomotive head. When the TI host of the signal system reads the beacon, it receives the LOCK signal of the TI host signal, controls the motor to drive the spiral device to move the beacon, and realizes the purpose of automatic and accurate test window in an intuitive display manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 the structures shown in these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of the device provided by the present invention; Figure 2 A schematic diagram of the structure of a rangefinder front-end device provided by the present invention; Figure 3 A schematic diagram of the mounting arm structure provided by the present invention; Figure 4 A schematic diagram of a measurement flow before a secondary measurement of a beacon provided by the present invention; Figure 5 A schematic diagram of a flow chart for performing secondary measurement when the measurement exceeds 750 mm provided by the present invention.

[0017] In the figure, 1. control host; 2. control interface; 3. beacon bracket and slide rail; 301. beacon and beacon bracket; 302. linear slide rail; 4. mounting arm; 401. adjustment tube a; 402. arm a; 403. arm b; 404. adjustment tube b; 405. arm c; 406. arm d. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] The following is a detailed description of the implementation method of the present invention in conjunction with the accompanying drawings. Only some embodiments are described, not all embodiments. For the purpose of clarity, representations and descriptions that are not related to the present invention are omitted in the drawings and descriptions.

[0020] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below. Obviously, the implementation cases described are part of the embodiments of the present invention, not all of the embodiments, and cannot be understood as limiting the scope of the implementation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0021] like Figure 1 As shown, the present invention provides a microwave antenna radiation rangefinder, including a rangefinder front-end device, a plurality of mounting arms 4 and a control host 1; the rangefinder front-end device specifically includes: a control interface 2, a beacon bracket and a slide rail 3; the control host 1 controls the beacon bracket and the slide rail 3 through the control interface 2; the beacon bracket and the slide rail 3 are installed between two rails through the mounting arms 4.

[0022] like Figure 2 As shown, the beacon bracket and the slide rail 3 specifically include: a beacon and a beacon bracket 301, and a linear slide rail 302; the beacon and the beacon bracket 301 are installed on the linear slide rail 302 and controlled by the control host 1. There are arm mounting holes at both ends of the linear slide rail 302 for fixing the mounting arm 4. The beacon and the beacon bracket 301 can be extended and rotated 360°; the standard measurement range of the linear slide rail 302 is ≦750mm.

[0023] The mounting arm 4 specifically includes: Figure 3 As shown: adjusting tube a401, arm a402, arm b403, adjusting tube b404, arm c405, arm d406; the arm a402, arm b403, arm c405, arm d406 are respectively arranged at the two ends of the front end device of the rangefinder; the mounting arm 4 is respectively adjusted by adjusting the adjusting tube a401 and the adjusting tube b404 to adjust the arm length. Among them, the mounting arm 4 has a downward notch on the side close to the rail, which is used to buckle on the rail through the notch during installation.

[0024] The working voltage of the control host 1 is DC24V or AC220V; the motor control mode of the control host 1 includes inching mode and linkage mode. There is a lock signal light on the control host 1, and when the locomotive lock signal is received through the beacon bracket and the slide rail 3, the light is on.

[0025] The control interface 2 is connected to the control host 1 via a 4-core aviation socket and a connecting line; the control interface 2 is built with a stepper motor for rotating the slide rail sliding beacon.

[0026] The measurement method specifically includes: S1. roughly predicting the range of the RF window to be measured; S2. powering the microwave antenna radiation rangefinder, and turning on the locomotive host to be detected and the microwave antenna radiation rangefinder; S3. initializing the microwave antenna radiation rangefinder, and accurately measuring and counting the RF window of the locomotive.

[0027] The distance measurement and counting in step S3 specifically includes the following sub-steps: S31. The beacon and the beacon bracket 301 move in the original direction; S32. Observe the locking signal light on the locomotive and measure the size of the radio frequency window: when the locking signal light is off, control the beacon and the beacon bracket 301 to move in the opposite direction, and when the locking signal light is on and stable, record and measure the size of the radio frequency window of the locomotive. The radio frequency window range for distance measurement in step S3 is 0~750mm.

[0028] When the RF window range is greater than 750mm, a secondary measurement of the RF window is required. The secondary measurement ranging method specifically includes the following steps: when the beacon and the beacon bracket 301 move to one end of the linear slide rail 302, the locking signal light is still on, the beacon and the beacon bracket 301 are stopped from moving and the current measurement data is recorded, the beacon and the beacon bracket 301 are reversed and initialized, and then the counting is started.

[0029] When the RF window range is greater than 750mm, it is specifically divided into two parts: when the RF window range is greater than 750mm and ≤1500mm, since the RF window is completely symmetrical, the beacon and beacon bracket 301 are used to measure the distance from the center position of the microwave antenna to the edge of the RF window at one end, and then the measured distance is multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna; when the RF window range is greater than 1500mm, the center position of the microwave antenna is used as the boundary, and the RF window distance on one side is measured in sections, and the distance of each section is added and multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna.

[0030] Example: The microwave antenna radiation rangefinder is mainly composed of a front-end device, a mounting arm and a control host. A 4-core aviation socket is used to connect the front-end device control interface through a control connection line; a 2-core aviation socket and a signal connection line are used to connect the 16-pin I / O terminal seat on the front panel of the TI host. The standard measurable range is ≤750mm (if the measured range exceeds the 750mm window, the metal plate on the rangefinder can be retracted and rotated to increase the measuring range).

[0031] Set up the instrument on the rails at the lower end of the antenna, connect it to the IO port of the TI host, and take 220V power or battery power from the locomotive head. There is no need to connect and operate the microwave cable and antenna: 1. Install the standard test beacon on the metal plate of the front-end device of the rangefinder and fix it with a nut; 2. Insert the support arm b into the mounting hole of the front-end device of the rangefinder, and note that the notch is on the top; 3. Fix it with screws; 4. Insert the support arm a into the mounting hole on the other side of the rangefinder, and note that the notch is on the top; 5. Put the four support arms on the two rails directly below the antenna. Note that the control interface of the front-end device (4-core aviation socket) should face the control host, so that when operating the control host, the direction of the panel buttons is consistent with the direction of the beacon movement. The center position of the linear slide rail of the front-end device should be as close to the center of the antenna as possible. If the center position of the linear slide rail cannot be close to the center of the antenna, try to make the support arm at one end of the front-end device close to the wheel of the locomotive; 6. Rotate the adjustment tube to make the support arm close to the rail, and the tester will be stably fixed on the rail. 7. Adjust the height of the metal plate by rotating it to achieve a vertical distance of 300mm between the antenna and the beacon on the metal plate. After adjustment, tighten the screws under the metal plate to make the center line of the beacon parallel to the center line of the antenna. 8. Use a 4-core aviation plug to connect the control interface of the rangefinder front-end device and the rangefinder control host. Use a 2-core aviation plug to connect one end to the signal interface of the rangefinder control host and the other end to the 16-pin I / O terminal block on the front panel of the TI host.

[0032] Measurement of RF window (≤750mm): 1. Connect to the 220V AC power supply of the locomotive, or use the battery that comes with the tester. Power switch: turn the switch to DC24V for battery power and to AC220V for AC power.

[0033] 2. After confirming that the TI host on the locomotive is turned on, press the power switch of the tester host to see if the lock signal light is on. If not, press the [←] key or [→] key on the control host 1 to move the beacon toward the center of the antenna. When moving, you can choose to move in synchronous or continuous mode. When the beacon is in continuous movement, to stop moving, press the synchronous / continuous switch key, switch to synchronous, and stop moving. When the lock signal light is on and relatively stable, stop moving the beacon.

[0034] 3. Press the start button to reset and start distance measurement and counting.

[0035] 4. Continue moving in the original direction. When the locking signal light goes out, move a little in the opposite direction. When the locking signal light comes on and is relatively stable, you can write down the numbers on the running display and measure the RF window size of the TI host on this end of the locomotive.

[0036] 5. If the lock signal light is on when the device is turned on, press the [←] key or the [→] key to move the beacon away from the center of the antenna. When the lock signal light goes out, move it a little in the opposite direction. When the lock signal light is on and relatively stable, press the start key to reset it. Follow the steps in step 4 to measure the RF window size.

[0037] like Figure 4 , Figure 5 As shown, when you want to measure an RF window exceeding 750mm, you must perform a secondary measurement. First, loosen the locking screw on the metal plate, move the small metal plate that fixes the beacon on the metal plate of the rangefinder, and align the edge of the beacon with the 200 scale on the metal plate. Continue to move in the original direction. When the lock signal light goes out, move a little in the opposite direction. When the lock signal light is on and relatively stable, you can write down the numbers on the running display and measure the RF window size of the TI host on this end of the locomotive. If the lock signal light is on when you start the machine, press the [←] key or the [→] key to move the beacon away from the center of the antenna. When the lock signal light goes out, move a little in the opposite direction. When the lock signal light is on and relatively stable, press the start key to reset. Follow the fourth operation to measure the RF window size.

[0038] When the RF window range is greater than 750mm and less than or equal to 1500mm, since the RF window is completely symmetrical, the distance from the center position of the microwave antenna to the edge of the RF window at one end is measured using the beacon and beacon bracket 301, and then the measured distance is multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna; when the RF window range is greater than 1500mm, the RF window distance on one side is measured in sections with the center position of the microwave antenna as the boundary, and the distance of each section is added and multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna.

[0039] If the lock signal is still not off when the motor slider approaches the end, stop the moving key and write down the number A on the running display. A second measurement is required. For the second measurement, loosen the adjustment knob under the metal plate and rotate the metal plate on the tester 180°. At this time, the lock signal light should be off. Press the start key to reset and start the distance measurement count. Press the [←] key or [→] key to move the beacon toward the center of the antenna. When the lock signal light is on and stable, write down the number B on the running display. The RF window size can be obtained as: A+555-B.

[0040] The present invention installs a microwave antenna radiation rangefinder on the track below the TI antenna of the locomotive head. When the TI host of the signal system reads the beacon, it receives the LOCK signal of the TI host signal, controls the motor to drive the spiral device to move the beacon, and realizes the purpose of automatic and accurate test window in an intuitive display manner.

[0041] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A microwave antenna radiation rangefinder, comprising a rangefinder front-end device, a plurality of mounting arms (4) and a control host (1); characterized in that: The rangefinder front-end device specifically comprises: a control interface (2), a beacon bracket and a slide rail (3); the control host (1) controls the beacon bracket and the slide rail (3) via the control interface (2); the beacon bracket and the slide rail (3) are installed between two rails via an installation arm (4); The beacon bracket and the slide rail (3) specifically comprise: a beacon and the beacon bracket (301), and a linear slide rail (302); the beacon and the beacon bracket (301) are mounted on the linear slide rail (302) and are controlled by the control host (1).

2. The microwave antenna radiation rangefinder according to claim 1, characterized in that: There are support arm mounting holes at both ends of the linear slide rail (302) for fixing the support arm (4); there is a downward notch on the side of the support arm (4) close to the rail for buckling onto the rail through the notch during installation.

3. The microwave antenna radiation rangefinder according to claim 1, characterized in that: The mounting support arm (4) specifically comprises: an adjusting tube a (401), a support arm a (402), a support arm b (403), an adjusting tube b (404), a support arm c (405), and a support arm d (406); the support arm a (402), the support arm b (403), the support arm c (405), and the support arm d (406) are respectively arranged at two ends of the front end device of the rangefinder; the mounting support arm (4) is used to adjust the length of the support arm by adjusting the adjusting tube a (401) and the adjusting tube b (404).

4. The microwave antenna radiation rangefinder according to claim 1, characterized in that: The working voltage of the control host (1) is DC24V or AC220V; the motor control mode of the control host (1) includes a jog mode and a linkage mode; The control host (1) has a lock signal light, which lights up when a locomotive lock signal is received through the beacon bracket and the slide rail (3).

5. The microwave antenna radiation rangefinder according to claim 1, characterized in that: The control interface (2) is connected to the control host (1) via a 4-core aviation socket and a connecting line; the control interface (2) has a built-in stepping motor for rotating the slide rail sliding beacon.

6. A microwave antenna radiation ranging method, based on the microwave antenna radiation ranging instrument according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Make a preliminary prediction of the RF window range to be measured; S2. Power the microwave antenna radiation rangefinder and turn on the locomotive host and the microwave antenna radiation rangefinder to be detected; S3. Initialize the microwave antenna radiation rangefinder to accurately measure and count the RF window of the locomotive.

7. The microwave antenna radiation ranging method according to claim 6, characterized in that: The distance measurement and counting in step S3 specifically includes the following sub-steps: S31. The beacon and the beacon bracket (301) move in the original direction; S32. Observe the locking signal light on the locomotive and measure the size of the radio frequency window: when the locking signal light is off, control the beacon and the beacon bracket (301) to move in the opposite direction, and when the locking signal light is on and stable, record and measure the size of the radio frequency window of the locomotive.

8. The microwave antenna radiation ranging method according to claim 7, characterized in that: The radio frequency window range for ranging in step S3 is 0-750 mm.

9. The microwave antenna radiation ranging method according to claim 8, characterized in that: When the RF window range is greater than 750 mm, a secondary measurement of the RF window is required. The secondary measurement distance measurement method specifically comprises the following steps: when the beacon and the beacon bracket (301) move to one end of the linear slide rail (302), the locking signal light is still on, the movement of the beacon and the beacon bracket (301) is stopped and the current measurement data is recorded, the beacon and the beacon bracket (301) are reversed and initialized, and then counting is started.

10. The microwave antenna radiation ranging method according to claim 9, characterized in that: When the RF window range is greater than 750 mm, it is specifically divided into two parts: When the radio frequency window range is greater than 750 mm and less than or equal to 1500 mm, since the radio frequency window is completely symmetrical, the distance from the center position of the microwave antenna to the edge of the radio frequency window at one end is measured using a beacon and a beacon bracket (301), and the measured distance is multiplied by two to obtain the specific size of the radio frequency window radiated by the microwave antenna; When the RF window range is greater than 1500mm, the RF window distance on one side is measured in sections with the center position of the microwave antenna as the boundary. The distance of each section is added and multiplied by two to obtain the specific size of the RF window radiated by the microwave antenna.

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