CN113259025B - Calibration system and method for broadband radio frequency receiving device - Google Patents

Abstract

The invention discloses a calibration system of a broadband radio frequency receiving device, which comprises a computer, and a testing device and a tested device which are electrically connected with the computer respectively, wherein the testing device comprises a testing body, a signal sending module, a position sensing module and a moving module, the signal sending module, the position sensing module and the moving module are provided with power supplies and are arranged on the testing body, the signal sending module, the position sensing module and the moving module are electrically connected with the computer respectively, the tested device comprises a tested body and a signal receiving module arranged on the tested body, and the signal receiving module is electrically connected with the computer. The invention solves the problems of long time of manual operation steps, low efficiency, low automation degree, influence on the body health of testers and the like in the prior art.

Description

Calibration system and method for a broadband radio frequency receiving device

technical field

The invention relates to the technical field of signal testing, in particular to a calibration system and method for a broadband radio frequency receiving device.

Background technique

Under normal circumstances, it is very difficult to calibrate the azimuth channel of the broadband radio frequency receiving device outdoors. At present, the whole process of calibration and testing outdoors is done manually, relying on multiple people to carry various test instruments at different angles. Communicate with the testers who monitor the broadband radio frequency receiving device through the walkie-talkie. The testers of the broadband radio frequency receiving device manually record the information according to the test information received by the receiving device. After all the tests are completed, the information is manually counted and calculated. , long-term exposure to the sun or low temperature and cold outdoors will damage the health of the testers, and at the same time, manual information statistics and calculations will be required afterwards, which will result in low work efficiency and consume a lot of manpower and material resources.

A typical calibration system has the following characteristics: the measured broadband radio frequency receiving device is powered on, and various test instruments are powered on separately, there is no control computer, only the monitoring computer of the broadband radio frequency receiving device; the center point O of the measured object is measured by a tape measure The test point of the horizontal straight line distance R, and then mark all other angle points that need to be calibrated on the ground; a five-line laser level is placed below the receiving antenna of the broadband radio frequency receiving device under test. Two vertically intersecting laser lines are shot above. Manually adjust the position and direction of the laser level so that one laser line is parallel to the sideline of the measured object AB, and the other laser line passes through the midpoint of the measured object AB, then the laser line perpendicular to AB is the measured object’s normal line, manually adjust the height H, the angle ψ of the rotating shaft and the angle a, and its positional relationship is also shown in Figure 3. There is a manually operated signal source at the signal source of the signal generating device, and the testers rely on voice communication to complete the work; manually record the frequency point frequency information and frequency point angle information received by the device under test, and then calculate the difference between the angle information and the actual The difference between azimuths is calculated by frequency point and azimuth until all the difference calculations are completed; when performing the next angle test, personnel need to manually move the required equipment, devices, and transmitting antennas.

The manual operation steps in the above prior art are often time-consuming, low in efficiency, low in automation, and affect the health of testers and the like.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a calibration system and method for a wideband radio frequency receiving device, which solves the problems in the prior art, such as long manual operation steps, low efficiency, low degree of automation, and affecting the health of testers, etc. question.

The technical solution adopted by the present invention to solve the above problems is:

A calibration system for a broadband radio frequency receiving device, comprising a computer, a test device electrically connected to the computer, and a device under test, the test device includes a test body, a signal sending module, a position sensing module, and a mobile module, the The signal sending module, the position sensing module, and the mobile module all have a power supply and are all arranged on the test body, and the signal sending module, the position sensing module, and the mobile module are electrically connected to the computer respectively, and the tested device includes the tested body . A signal receiving module arranged on the body to be tested, and the signal receiving module is electrically connected with a computer.

The computer is used for signal transmission with the test device and the device under test. The test body is used as the bearing device of the test device, and the body under test is used as the bearing device of the device under test. The test device moves on the test body.

Since both the test device and the device under test are electrically connected to the computer, the efficiency of signal transmission and order execution is greatly improved, and the degree of automation is improved; the position sensing module and the mobile module are respectively electrically connected to the computer, which is convenient for the computer to sense and control the test device in real time Moreover, during the operation, the computer can automatically record, etc., which greatly reduces the time and energy of manual operation, greatly improves the efficiency, and also avoids the testers being exposed to the sun for a long time or in the open air at low temperature and cold, which reduces the impact on Effects on tester health.

The effect of the present invention is to use the automatic test system to calibrate the azimuth channel, replace the test personnel to complete the test related work, avoid long-term exposure of personnel to signal radiation, high temperature exposure or low temperature and cold open air environment, improve work efficiency, save work time, and effectively It is conducive to large-scale production and debugging, and reduces the cost of manpower and material resources.

As a preferred technical solution, the signal sending module includes a signal generator and a power amplifier electrically connected to each other.

The signal generator sends signals, and the power amplifier amplifies the signal generator, so that the test device can better receive information, improves the reliability of the system of the present invention, and is beneficial to realize the implementation with small signals.

As a preferred technical solution, the power amplifier is electrically connected to a transmitting antenna.

As a preferred technical solution, the height of the transmitting antenna can be adjusted.

As a preferred technical solution, the rotation axis angle of the transmitting antenna can be adjusted.

The transmitting antenna is widely used in signal transmission, and has a simple structure and good transmission effect, and it is convenient to realize effective signal transmission through the adjustment of height and rotation axis angle, which is flexible and efficient.

As a preferred technical solution, the computer and the test device transmit signals through wireless communication.

This is convenient for reducing the disturbance of the electrical signal connection lines, and also facilitates long-distance signal transmission.

As a preferred technical solution, the computer and the device under test transmit signals through wireless communication or wired communication.

This facilitates the optimization of the electrical connection structure for signal transmission according to actual working conditions, with a wide range of options.

A method for using a calibration system of a broadband radio frequency receiving device, comprising the following steps:

S1, placing the position sensing module of the test device at the central point of the device under test, the signal receiving module receives the position information and transmits the position information to the computer;

S2, moving the test device away from the central point of the device under test and fixing it;

S3, the signal sending module sends a signal to the signal receiving module and the computer, and the signal receiving module receives the signal and then feeds it back to the computer;

S4, the computer compares the signal sent by the signal sending module with the signal fed back by the signal receiving module, records the frequency difference between the two and generates a compensation table, and stores the compensation table in the device under test.

The computer is used for signal transmission with the test device and the device under test. The test body is used as the bearing device of the test device, and the body under test is used as the bearing device of the device under test. The test device moves on the test body.

Since both the test device and the device under test are electrically connected to the computer, the efficiency of signal transmission and order execution is greatly improved, and the degree of automation is improved; the position sensing module and the mobile module are respectively electrically connected to the computer, which is convenient for the computer to sense and control the test device in real time Moreover, during the operation, the computer can automatically record, etc., which greatly reduces the time and energy of manual operation, greatly improves the efficiency, and also avoids the testers being exposed to the sun for a long time or in the open air at low temperature and cold, which reduces the impact on Effects on tester health.

The effect of the present invention is to use the automatic test system to calibrate the azimuth channel, replace the test personnel to complete the test related work, avoid long-term exposure of personnel to signal radiation, high temperature exposure or low temperature and cold open air environment, improve work efficiency, save work time, and effectively It is conducive to large-scale production and debugging, and reduces the cost of manpower and material resources.

As a preferred technical solution, in step S3, the following step is further included: setting the height of the transmitting antenna.

As a preferred technical solution, in step S3, the following step is further included: setting the rotation axis angle of the transmitting antenna.

The transmitting antenna is widely used in signal transmission, and has a simple structure and good transmission effect, and it is convenient to realize effective signal transmission through the adjustment of height and rotation axis angle, which is flexible and efficient.

Compared with the prior art, the present invention has the following beneficial effects:

(1) In the present invention, both the test device and the device under test are electrically connected to the computer, which greatly improves the efficiency of signal transmission and order execution, and improves the degree of automation; the position sensing module and the mobile module are respectively electrically connected to the computer, which is convenient for the real-time operation of the computer. Sensing and controlling the position of the test device; moreover, during the operation, the computer can automatically record, etc., which greatly reduces the time and energy of manual operation, greatly improves the efficiency, and also avoids the test personnel being exposed to the sun for a long time or low temperature and cold in the open space. Outdoors, reducing the impact on the health of testers;

(2) The present invention uses an automatic test system for azimuth channel calibration, instead of test personnel to complete test-related work, avoiding long-term exposure of personnel to signal radiation, high-temperature exposure or low-temperature cold open-air environments, improving work efficiency, saving working time, and Facilitate large-scale production debugging and reduce manpower and material costs;

(3) The signal generator sends a signal, and the power amplifier amplifies the signal generator, so that the test device can better receive information, improves the reliability of the system of the present invention, and is conducive to realizing the implementation with small signals;

(4) The transmitting antenna is widely used in signal transmission, with simple structure and good transmission effect, and it is convenient to realize the effective transmission of signals through the adjustment of height and rotation axis angle, which is flexible and efficient;

(5) The computer and the test device transmit signals by wireless communication, which is convenient for reducing the disturbance of the electrical signal connection line, and also facilitates long-distance signal transmission, and the computer and the device under test transmit signals by wireless communication or wired communication , which facilitates the optimization of the electrical connection structure for signal transmission according to actual working conditions, with a wide range of options.

Description of drawings

Fig. 1 is one of structural representations of the system of the present invention;

Fig. 2 is the second structural representation of the system of the present invention;

Fig. 3 is the schematic diagram of the use of the system of the present invention in embodiment 3;

FIG. 4 is a schematic structural diagram of the transmitting antenna described in Embodiment 3 of the present invention.

The marks in the drawings and the names of corresponding parts: 1. Computer, 2. Test device, 3. Device under test, 21. Signal sending module, 22. Position sensing module, 23. Mobile module, 24. Test body, 25 . Transmitting antenna, 31. Signal receiving module, 32. Tested body, 211. Signal generator, 212. Power amplifier.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

As shown in Figures 1 to 4, a calibration system for a broadband radio frequency receiving device includes a computer 1, a test device 2 electrically connected to the computer 1 and a device under test 3, and the test device 2 includes a test body 24 , signal transmission module 21, position sensing module 22, mobile module 23, described signal transmission module 21, position sensing module 22, mobile module 23 all have power supply and are all arranged on the test body 24, described signal transmission module 21 , a position sensing module 22, and a mobile module 23 are electrically connected to the computer 1 respectively, and the device under test 3 includes a measured body 32, a signal receiving module 31 arranged on the measured body 32, and the signal receiving module 31 is connected to the computer 1 electrically connected.

The computer 1 is used for signal transmission with the test device 2 and the device under test 3, the test body 24 is used as the carrying device of the test device 2, the test body 32 is used as the carrying device of the device under test 3, and the position sensing module 22 is used for sensing the test device 2, the mobile module 23 can drive the test device 2 loaded on the test body 24 to move.

When using it, follow the steps below:

S1, placing the position sensing module 22 of the test device 2 at the central point of the device under test 3, the signal receiving module 31 receives the position information and transmits the position information to the computer 1; this step is used as the detection check of the initial point;

S2, fixing the test device 2 away from the central point of the device under test 3; this step prepares for the next step of detection;

S3, the signal sending module 21 sends a signal to the signal receiving module 31 and the computer 1, and the signal receiving module 31 receives the signal and then feeds it back to the computer 1;

S4, the computer 1 compares the signal sent by the signal sending module 21 with the signal fed back by the signal receiving module 31, records the frequency difference between the two and generates a compensation table, and stores the compensation table in the device under test 3.

Because the test device 2 and the device under test 3 are all electrically connected to the computer 1, the efficiency of signal transmission and order execution is greatly improved, and the degree of automation is improved; the position sensing module 22 and the mobile module 23 are respectively electrically connected to the computer 1, which is convenient for the computer. 1 Real-time sensing and control of the position of the test device 2; moreover, during the operation, the computer 1 can automatically record, etc., which greatly reduces the time and energy of manual operation, greatly improves the efficiency, and also avoids long-term exposure of test personnel to sunlight or low temperature The cold outdoors reduces the impact on the health of the testers.

The effect of the present invention is to use the automatic test system to calibrate the azimuth channel, replace the test personnel to complete the test related work, avoid long-term exposure of personnel to signal radiation, high temperature exposure or low temperature and cold open air environment, improve work efficiency, save work time, and effectively It is conducive to large-scale production and debugging, and reduces the cost of manpower and material resources.

As a preferred technical solution, the signal sending module 21 includes a signal generator 211 and a power amplifier 212 electrically connected to each other.

The signal generator 211 sends a signal, and the power amplifier 212 amplifies the signal generator 211, so that the test device 2 can better receive information, improves the reliability of the system of the present invention, and is beneficial to implement with a small signal.

As a preferred technical solution, the power amplifier 212 is electrically connected to the transmitting antenna 25 .

As a preferred technical solution, the height of the transmitting antenna 25 can be adjusted.

As a preferred technical solution, the rotation axis angle of the transmitting antenna 25 can be adjusted.

The transmitting antenna 25 is widely used in signal transmission, and has a simple structure and good transmission effect, and it is convenient to realize effective signal transmission through the adjustment of height and rotation axis angle, which is flexible and efficient.

As a preferred technical solution, the computer 1 and the test device 2 transmit signals through wireless communication.

This is convenient for reducing the disturbance of the electrical signal connection lines, and also facilitates long-distance signal transmission.

As a preferred technical solution, the computer 1 and the device under test 3 transmit signals through wireless communication or wired communication.

This facilitates the optimization of the electrical connection structure for signal transmission according to actual working conditions, with a wide range of options.

Example 2

As shown in Figures 1 to 4, this embodiment provides a method for using a calibration system for a broadband radio frequency receiving device, including the following steps:

S1, placing the position sensing module 22 of the test device 2 at the central point of the device under test 3, the signal receiving module 31 receives the position information and transmits the position information to the computer 1;

S2, fixing the test device 2 away from the central point of the device under test 3;

S3, the signal sending module 21 sends a signal to the signal receiving module 31 and the computer 1, and the signal receiving module 31 receives the signal and then feeds it back to the computer 1;

S4, the computer 1 compares the signal sent by the signal sending module 21 with the signal fed back by the signal receiving module 31, records the frequency difference between the two and generates a compensation table, and stores the compensation table in the device under test 3.

The computer 1 is used for signal transmission with the test device 2 and the device under test 3, the test body 24 is used as the carrying device of the test device 2, the test body 32 is used as the carrying device of the device under test 3, and the position sensing module 22 is used for sensing the test device 2, the mobile module 23 can drive the test device 2 loaded on the test body 24 to move.

Because the test device 2 and the device under test 3 are all electrically connected to the computer 1, the efficiency of signal transmission and order execution is greatly improved, and the degree of automation is improved; the position sensing module 22 and the mobile module 23 are respectively electrically connected to the computer 1, which is convenient for the computer. 1 Real-time sensing and control of the position of the test device 2; moreover, during the operation, the computer 1 can automatically record, etc., which greatly reduces the time and energy of manual operation, greatly improves the efficiency, and also avoids long-term exposure of test personnel to sunlight or low temperature The cold outdoors reduces the impact on the health of the testers.

The effect of the present invention is to use the automatic test system to calibrate the azimuth channel, replace the test personnel to complete the test related work, avoid long-term exposure of personnel to signal radiation, high temperature exposure or low temperature and cold open air environment, improve work efficiency, save work time, and effectively It is conducive to large-scale production and debugging, and reduces the cost of manpower and material resources.

As a preferred technical solution, in step S3, the following step is further included: setting the height of the transmitting antenna 25 .

As a preferred technical solution, in step S3, the following step is further included: setting the rotation axis angle of the transmitting antenna 25 .

The transmitting antenna 25 is widely used in signal transmission, and has a simple structure and good transmission effect, and it is convenient to realize effective signal transmission through the adjustment of height and rotation axis angle, which is flexible and efficient.

Example 3

As shown in FIG. 1 to FIG. 4 , on the basis of Embodiment 1 and Embodiment 2, this embodiment provides a more specific implementation solution. It can be implemented using the following steps:

1) Both the test device 2 and the device under test 3 are powered on, and the control computer 1 is turned on.

2) Place the position sensing module 22 of the test device 2 on the center point O of the device under test 3, the position sensing module 22 uploads the GPS data to the control computer 1 through wireless communication, and the control computer 1 according to the required level The linear control distance R controls the moving module 23 to drive the test device 2 to the first test point.

3) By controlling the computer 1 to set the height H of the elevating pole of the transmitting antenna 25 of the test device 2, and the angle ψ of the antenna rotation axis, the test device 2 moves to the corresponding initial position after receiving the instruction, and feeds back the current position information (height H, rotation axis angle) of the control computer. ψ, distance R and angle a), forming a closed loop of data. Set the frequency and the output power of the signal transmission module 21 by the control computer, adjust the elevating pole height of transmitting antenna 25, make the intensity of this frequency point signal maximum, now the elevating pole height is denoted as H; adjust the rotating shaft angle of transmitting antenna 25 ( As preferably, transmitting antenna 25 can rotate 360 °), make the strength of this frequency point signal maximum, now the angle of rotating shaft and horizontal plane is denoted as ψ; The strength of the current frequency point signal, the height H, the rotation axis angle ψ, the distance R and the angle a, wherein a refers to the angle between the line connecting the signal sending module 21 and the signal receiving module 31 and the vertical line of the straight line AB.

4) The control computer 1 sets frequency information, frequency angle information, frequency step information and output power information through the network control signal sending module 21 to start testing.

5) The frequency point frequency information and the frequency point angle information received by the device under test 3 are fed back to the computer 1 through wired or wireless communication, and the computer 1 feeds back the frequency point information fed back by the device under test 3 and the frequency point frequency information sent by the test device 2 For comparison, if the frequency error of the frequency point is within ±3MHz, it is considered that the receiving frequency point is correct; compare the difference between the current frequency point angle information fed back by the device under test 3 and the frequency point angle information sent by the test device 2, and form a direction finding compensation table TXT For example, if the angle information of the current frequency point fed back by the system under test is 128.3°, and the angle information fed back by the automatic test system is 130°, the compensation value of the direction finding compensation table at the 130° azimuth of the frequency point is filled with 1.7 ; If the angle information of the current frequency point fed back by the system under test is 131.8°, and the angle information fed back by the automatic test system is 130°, fill in -1.8 in the direction finding compensation table at the 130° orientation of the frequency point. After staying for 2 seconds, follow the control computer to enter the next frequency point for testing according to the frequency point stepping information.

6) With this loop, complete the test of all test points of this angle, the computer 1 controls the test device 2 to move to the next angle according to the GPS data to carry out the test of the above steps, as preferably, the transmitting antenna 25 of the test device 2 is on each test point Need to point to the direction of the center O.

In this embodiment, the device under test 3 may be provided with a receiving antenna. When the transmitting antenna 25 is aiming at the receiving antenna at different angles, the signal generator 211 starts to generate a radio frequency signal output, the signal power is amplified by the power amplifier 212 and then radiated by the transmitting antenna 25, and finally the signal is received by the receiving antenna for signal processing. Output the direction-finding compensation table TXT file of the system under test in each azimuth, and write the TXT file into the device under test 3 to complete the azimuth calibration of the system.

As described above, the present invention can be preferably carried out.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple changes made to the above embodiments The modification, equivalent replacement and improvement, etc., all still belong to the protection scope of the technical solution of the present invention.

Claims (2)

1. a kind of calibration system of broadband radio frequency receiver, it is characterized in that, comprise computer (1), test device (2) and the device under test (3) that are electrically connected with described computer (1) respectively, described test device (2) comprising test body (24), signal transmission module (21), position sensing module (22), mobile module (23), described signal transmission module (21), position sensing module (22), mobile module (23) all have a power supply and are all located on the test body (24), and the signal sending module (21), the position sensing module (22), and the mobile module (23) are electrically connected with the computer (1) respectively, and the The tested device (3) comprises a tested body (32), a signal receiving module (31) arranged on the tested body (32), the signal receiving module (31) is electrically connected with the computer (1); the signal Sending module (21) is used for sending signal to signal receiving module (31), computer (1), and described signal receiving module (31) is used for receiving signal and then feeds back to computer (1); Described computer (1) is used for : compare the signal sent by the signal sending module (21) with the signal fed back by the signal receiving module (31), record the frequency difference between the two and generate a compensation table, and store the compensation table in the device under test (3); The signal sending module (21) includes a signal generator (211) and a power amplifier (212) electrically connected to each other; The power amplifier (212) is electrically connected to a transmitting antenna (25); The height of the transmitting antenna (25) can be adjusted; The rotation axis angle of the transmitting antenna (25) can be adjusted; The computer (1) and the testing device (2) transmit signals through wireless communication; The computer (1) and the device under test (3) transmit signals through wireless communication or wired communication. 2. the using method of the calibration system of a kind of broadband radio frequency receiving device according to claim 1, is characterized in that, comprises the following steps: S1, placing the position sensing module (22) of the test device (2) at the central point of the device under test (3), the signal receiving module (31) receives the position information and transmits the position information to the computer (1); S2, fix the test device (2) away from the central point of the device under test (3), the position sensing module (22) uploads the GPS data to the control computer (1) through wireless communication, and the computer (1) according to the needs The horizontal straight line control distance R controls the mobile module (23) to drive the test device (2) to the first test point; S3, the signal sending module (21) sends a signal to the signal receiving module (31), the computer (1), and the signal receiving module (31) receives the signal and then feeds back to the computer (1); S4, the computer (1) compares the signal sent by the signal sending module (21) with the signal fed back by the signal receiving module (31), records the frequency difference between the two and generates a compensation table, and stores the compensation table into the device under test ( 3) in; In step S3, also include the following steps: the height of sending antenna (25) is set; In step S3, the following step is also included: setting the rotation axis angle of the transmitting antenna (25).

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