CN115752541A - Test system and test method - Google Patents
Test system and test method Download PDFInfo
- Publication number
- CN115752541A CN115752541A CN202211404334.6A CN202211404334A CN115752541A CN 115752541 A CN115752541 A CN 115752541A CN 202211404334 A CN202211404334 A CN 202211404334A CN 115752541 A CN115752541 A CN 115752541A
- Authority
- CN
- China
- Prior art keywords
- concrete sensor
- test
- concrete
- isolation chamber
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 156
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 145
- 238000002955 isolation Methods 0.000 claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 43
- 230000035945 sensitivity Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 15
- 238000013507 mapping Methods 0.000 claims description 6
- 238000003306 harvesting Methods 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 238000013500 data storage Methods 0.000 description 4
- 230000001902 propagating effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013079 data visualisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a test system and a test method, wherein the test system comprises the following components: the energy transmission antenna and the first communication antenna are positioned in a space formed by the isolation chamber, the signal generator and the energy transmission antenna as well as the data collector and the first communication antenna are connected through the isolation chamber, and the isolation chamber isolates signals in the space from signals outside the space; the host generates a control instruction and sends the control instruction to the signal generator so as to control the signal generator to output a radio frequency signal; the energy transmission antenna receives the radio-frequency signal output by the signal generator and transmits the radio-frequency signal so that the concrete sensor can obtain electric energy; the first communication antenna receives test data transmitted by the concrete sensor, the test data are transmitted to the data acquisition unit, and the concrete sensor is positioned in the space of the isolation chamber; the host computer monitors the test data of the data acquisition unit and determines the attribute of the concrete sensor based on the test data. The test system can improve the test efficiency of the concrete sensor and the accuracy of the test result.
Description
The application is a divisional application of a patent application named as 'a test system and a test method', the original application date is 2021, 04, 13 and the application number is 202110393071.2.
Technical Field
The invention relates to the technical field of testing, in particular to a testing system and a testing method.
Background
The reinforced concrete is widely applied to various structures such as tunnels, buildings, bridges and the like, and the life and property loss caused by the collapse of the large-scale structures can be greatly reduced by regularly monitoring the large-scale structures. And the targeted inspection of the structure after large natural disasters such as flood, earthquake and typhoon is also very necessary. At present, a passive sensor can be embedded into concrete, so that the concrete sensor can effectively monitor parameters such as temperature, humidity, stress change, displacement and corrosion of reinforcing steel bars and the like of the concrete, and the passive sensor has the advantages of low cost, real time, high efficiency and the like.
Here, the concrete sensor also needs to be tested, calibrated, etc. during the production process to ensure its accuracy. The existing testing method comprises the following steps: put concrete sensor, energy supply communication equipment and heavy concrete model and move to spacious place, simulate actual work scene and carry out energy supply distance test. However, the test method requires more manpower to move the test equipment, which results in low test efficiency; in addition, when the test is carried out in an open place, the electromagnetic wave reflected by the ground can influence the test result, so that the accuracy of the test result is low.
Therefore, a testing method is needed to detect concrete sensors.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a test system and a test method.
In order to achieve the purpose, the invention provides the following scheme:
a test system comprises a host, a signal generator, an energy transmission antenna, a first communication antenna, a data collector, an isolation chamber, a power amplifier and/or a power attenuator, wherein the energy transmission antenna and the first communication antenna are positioned in a space formed by the isolation chamber, the signal generator is connected with the energy transmission antenna through the isolation chamber, the data collector is connected with the first communication antenna through the isolation chamber, and the isolation chamber is used for isolating signals in the space from signals outside the space;
the host generates a control instruction and sends the control instruction to the signal generator so as to control the signal generator to output a radio frequency signal; the energy transmission antenna receives the radio frequency signal output by the signal generator and transmits the radio frequency signal to enable the concrete sensor to obtain electric energy; the first communication antenna receives test data transmitted by the concrete sensor and transmits the test data to the data acquisition unit, wherein the concrete sensor is positioned in the space of the isolation room; the host monitors the test data of the data acquisition unit and determines the attribute of the concrete sensor based on the test data;
the control unit generates a control instruction based on a preset signal output rule;
transmitting the control instruction to the signal generator so that the signal generator outputs a corresponding radio frequency signal based on the control instruction;
the host further comprises a processing unit; the processing unit monitors the data acquisition unit to determine whether the data acquisition unit receives the test data; determining the attribute of the concrete sensor based on the test data under the condition that the data acquisition unit is determined to receive the test data, wherein the attribute comprises the sensitivity of the concrete sensor and the mapping relation between the attitude of the concrete sensor and the transmission distance of the concrete sensor;
the output rule of the signal generator for outputting the radio frequency signal is that the output frequency is fixed firstly, and then power scanning is carried out, wherein the power scanning process is that the output power is adjusted on the current fixed output frequency and is gradually reduced from large to small by a step length of 0.5 dBm; after testing a fixed output frequency, switching to the next fixed output frequency, and continuing to perform power scanning according to the output rule to complete frequency scanning;
the power amplifier and/or the power attenuator are disposed between the signal generator and the energy transmission antenna to enhance and/or attenuate the radio frequency signal.
Preferably, the method further comprises the following steps: the supporting device comprises a supporting table, a supporting rod and a movable connecting rod; the utility model discloses a concrete sensor, including isolation chamber, brace table, bracing piece, movable connecting rod, support table, bracing piece and movable connecting rod, the brace table, bracing piece and movable connecting rod all are located inside the space of isolation chamber, one side of brace table with the inner wall laminating setting of isolation chamber, the bracing piece is connected the opposite side of brace table with movable connecting rod's one end, movable connecting rod's the other end with concrete sensor connects, in order to adjust concrete sensor's gesture.
Preferably, the device further comprises a data line and a feed line;
the host is connected with the signal generator through the data line and connected with the data acquisition unit through the other data line;
the signal generator penetrates through the isolation chamber through the feeder line to be connected with the energy transmission antenna, and the first communication antenna penetrates through the isolation chamber through the other feeder line to be connected with the data acquisition unit.
Preferably, a feeder line through hole is formed in the isolation chamber;
the feeder line penetrates through the feeder line via hole, so that one end of the feeder line is arranged inside the space, and the other end of the feeder line is arranged outside the space.
Preferably, the electromagnetic wave emission source is positioned inside the space of the isolation chamber to emit electromagnetic waves inside the space of the isolation chamber.
Preferably, the inner wall of the isolation chamber is provided with a wave-absorbing material to absorb the electromagnetic waves emitted by the electromagnetic wave emission source in the isolation chamber.
Preferably, the system further comprises an energy harvesting antenna and a second communication antenna; the energy acquisition antenna and the second communication antenna are arranged on the concrete sensor, the energy acquisition antenna acquires radio frequency signals transmitted by the energy transmission antenna, and the second communication antenna transmits test data generated by the concrete sensor to the first communication antenna.
A test method is applied to the test system and comprises the following steps:
generating a control instruction, and transmitting a radio frequency signal corresponding to the control instruction in an isolation chamber based on the control instruction so as to enable a concrete sensor to obtain electric energy, wherein the isolation chamber is used for isolating a signal inside the space from a signal outside the space;
and receiving test data transmitted by the concrete sensor, and determining the attribute of the concrete sensor based on the test data.
Preferably, said determining attributes of said concrete sensor based on said test data comprises:
determining the sensitivity of the concrete sensor based on the radio frequency signal and the test data;
and calculating the transmission distance of the concrete sensor according to the difference between the sensitivity and the reference sensitivity.
Preferably, the step of determining the reference sensitivity comprises:
transmitting a test radio frequency signal in the isolation chamber to enable the standard concrete sensor to obtain electric energy;
receiving calibration test data transmitted by a standard concrete sensor;
determining a reference sensitivity based on the test radio frequency signal and the calibration test data;
the step of determining the standard concrete sensor comprises:
placing a normally functioning concrete sensor in a concrete model, wherein the concrete model is capable of accommodating the concrete sensor;
the radio frequency signal outputs a radio frequency signal according to a preset test frequency;
adjusting the distance between the energy transmission antenna and the concrete sensor through the movable scaffold and recording the distance until the data acquisition unit cannot acquire the test data;
and under the condition that a plurality of distances are obtained through measurement, determining that the concrete sensor corresponding to the distance in the middle position is a standard concrete sensor.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the test system of the embodiment of the invention can simulate various actual working scenes in a fixed field without carrying any device and equipment in the test system, thereby greatly improving the test efficiency; moreover, the constructed isolation chamber can simulate the environment of electromagnetic waves propagating in free space, and can isolate signals inside the space from signals outside the space, so that the influence of the electromagnetic waves on the test result due to ground reflection is avoided, and the accuracy of the test result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a test system provided in the present application;
FIG. 2 is a schematic diagram illustrating a physical structure of a test system provided in the present application;
FIG. 3 shows a schematic structural diagram of an environment set up when selecting a standard concrete sensor as provided herein;
FIG. 4 illustrates a flow chart of a testing method provided herein;
FIG. 5 illustrates a flow chart for determining attributes of the concrete sensor based on the test data in one test method provided herein;
FIG. 6 illustrates a flow chart for determining a reference sensitivity in a test method provided herein;
fig. 7 shows a flow chart of determining a standard concrete sensor in a testing method provided by the present application.
Description of the reference numerals: 101-a host; 1011-a control unit; 1012-a processing unit; 102-a signal generator; 103-an energy transmission antenna; 104-a first communication antenna; 105-a data collector; 106-an isolation chamber; 1061-a feeder via; 1062-inner wall of the isolation chamber; 107-data lines; 108-a feeder; 109-an energy harvesting antenna; 110-a second communication antenna; 1111-a support platform; 1112-a support bar; 1113-a movable connecting rod; 200-movable scaffolding; 201-an uninterruptible power supply; 202-notebook computer; 203-dipole antenna; 204-panel antenna; 205-ground; 206-concrete model; 207-standard concrete sensors.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different elements and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, the inclusion of a list of steps, processes, methods, etc. is not limited to only those steps recited, but may alternatively include additional steps not recited, or may alternatively include additional steps inherent to such processes, methods, articles, or devices.
The invention aims to provide a test system and a test method, which can improve the accuracy of test results.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In a first aspect, embodiments of the present application provide a test system for testing a concrete sensor. Fig. 1 shows a schematic structural diagram of the test system, which includes a host 101, a signal generator 102, an energy transmission antenna 103, a first communication antenna 104, a data collector 105, and an isolation room 106. The isolation room 106 is constructed in advance and has a certain space, when an actual working scene is simulated, the host 101, the signal generator 102 and the data collector 105 are arranged outside the space of the isolation room 106, the energy transmission antenna 103 and the first communication antenna 104 are arranged inside the space of the isolation room 106, the signal generator 102 and the energy transmission antenna 103 are connected through the isolation room 106, and the data collector 15 and the first communication antenna 104 are connected through the isolation room. The test system including the isolation room 106 provided by the embodiment of the application is arranged in a fixed place, so that a large amount of manual test equipment does not need to be carried, and the test efficiency is greatly improved; moreover, the test system is connected to the mains supply, so that the energy supply time limit of the mobile power supply is eliminated, and the flexibility is higher.
In a specific implementation, the host 101 generates a control command and controls the signal generator 102 to output a radio frequency signal based on the control command. Specifically, the host 101 includes a control unit 1011, where a signal output rule preset by a tester is stored in the control unit 1011, and the control unit 1011 generates a control command based on the preset signal output rule; of course, the signal output rule may also be that other electronic devices transmit the signal to the control unit 1011 through a wired transmission manner and/or a wireless transmission manner, which is not specifically limited in this embodiment of the application, as long as the control unit 1011 can obtain the signal output rule. Further, after generating the control command, the control unit 1011 transmits the control command to the signal generator 102, so that the signal generator 102 outputs a corresponding radio frequency signal based on the control command. As can be seen from the physical structure diagram of the test system shown in fig. 2, the control unit 1011 of the host 101 is connected to the signal generator 102 via a data line 107, and the data line 107 is used for transmitting control commands.
The signal generator 102 outputs a corresponding rf signal based on a specific frequency in the signal output rule, wherein in a specific implementation, the specific frequency is any frequency within an operating frequency range of the concrete sensor, so that the output power range is-30 dBm to 36dBm. Specifically, the signal output rule is that the output frequency is fixed firstly, and then power scanning is performed, wherein the power scanning process is that the output power is adjusted to be gradually reduced from large to small on the current fixed output frequency by a step length of 0.5 dBm; after testing a fixed output frequency, switching to the next fixed output frequency, and continuing to perform power scanning according to the above manner to complete frequency scanning. Preferably, in order to ensure that the signal generator 102 can output a specific radio frequency signal, the test system of the embodiment of the present application further includes a power amplifier and/or a power attenuator; under the condition that the maximum radio frequency signal output by the signal generator 102 is lower than the upper limit of a specific radio frequency signal, the signal generator 102 is connected with a power amplifier to amplify the radio frequency signal and transmit the amplified radio frequency signal to the energy transmission antenna 103; under the condition that the minimum radio frequency signal output by the signal generator 102 is still higher than the lower limit of the specific radio frequency signal, the signal generator 102 is connected with the power attenuator to attenuate the radio frequency signal and transmit the attenuated radio frequency signal to the energy transmission antenna 103. Of course, other digital adjusters, such as digital attenuators, may be provided to reduce the step size of the rf signal, etc.
With continued reference to fig. 2, the signal generator 102 is connected to the energy transmission antenna 103 through a feed line 108, and after generating the radio frequency signal, the signal generator 102 transmits the radio frequency signal to the energy transmission antenna 103, so that the energy transmission antenna 103 emits the radio frequency signal inside the space of the isolation chamber 106.
In a specific implementation, the concrete sensor is buried under concrete, so the test system of the embodiment of the present application is provided with the concrete sensor inside the space of the isolation chamber 106. Considering that the concrete sensor is a passive sensor, that is, a battery is not disposed inside the concrete sensor, referring to fig. 1 and fig. 2, the testing system provided in the embodiment of the present application further includes an energy collecting antenna 109, the energy collecting antenna 109 is disposed on the concrete sensor, the energy collecting antenna 109 can collect a radio frequency signal transmitted by the energy transmitting antenna 103 in real time, and further, the radio frequency signal is utilized to provide electric energy for the concrete sensor, wherein an operating frequency band of the energy transmitting antenna 103 covers an operating frequency band of the energy collecting antenna 109 on the concrete sensor, and the energy transmitting antenna 103 may be in a form of any one of a dipole, a horn antenna, and a flat reflector antenna. Specifically, the concrete sensor includes an energy collection unit, and the energy collection unit receives the radio frequency signal transmitted by the energy collection antenna 109, so that the concrete sensor obtains electric energy.
The concrete sensor also comprises a data processing unit, a data storage unit, a communication unit and a sensor unit, wherein after the concrete sensor acquires the electric energy, the data processing unit, the data storage unit, the communication unit and the sensor unit can work normally, and the sensor unit starts to collect one or more types of data of the concrete. Then, the sensor unit transmits the acquired data to the data storage unit so that the data storage unit stores the data; the sensor unit also transmits the acquired data to the data processing unit, so that the data processing unit performs packaging, packaging and other processing, and then transmits the processed test data to the communication unit.
Further, as shown in fig. 2, the testing system of the embodiment of the application further includes a second communication antenna 110 communicatively connected to the first communication antenna 104, where the second communication antenna 110 is disposed on the concrete sensor, and further transmits the test data generated by the concrete sensor to the first communication antenna 104, specifically, the communication unit of the concrete sensor transmits the test data to the second communication antenna 110, and further the second communication antenna 110 transmits the test data to the first communication antenna 104.
As can be further seen from fig. 2, the first communication antenna 104 is connected to the data collector 105 through another feeder 108, and the first communication antenna 104 transmits the test data to the data collector 105 after receiving the test data transmitted by the concrete sensor. The working frequency bands of the data acquisition unit 105 and the first communication antenna 104 are the same as the working frequency band of the communication unit of the concrete sensor. Here, the first communication antenna 104 may be in the form of any one of a dipole, a horn antenna, and a flat reflector antenna.
Further, the host 101 is connected with the data collector 105 through another data line 107, and the host 101 monitors the test data of the data collector 105 in real time through the data line 107 and determines the attribute of the concrete sensor based on the test data. Specifically, the host 101 further includes a processing unit 1012; the processing unit 1012 monitors the data collector 105 to determine whether the data collector 105 receives test data; in the case where it is determined that the data collector 105 receives the test data, based on the test data, the attribute of the concrete sensor is determined, the attribute including the sensitivity of the concrete sensor and the mapping relationship between the attitude of the concrete sensor and the transmission distance of the concrete sensor. In order to facilitate the tester to view the test result, the processing unit 1012 may also display the test data and the attribute of the concrete sensor in a data visualization form.
The processing unit 1012 determines the sensitivity of the concrete sensor based on the radio frequency signal and the test data, and the minimum power of the powers indicated by the radio frequency signal is used as the sensitivity of the concrete sensor when the processing unit 1012 can monitor the test data. And calculating the transmission distance of the concrete sensor according to the difference between the sensitivity and the reference sensitivity, establishing a mapping relation between the posture of the concrete sensor, such as a space angle, and the transmission distance, obtaining a plurality of mapping relations after finishing all frequency scanning, generating a three-dimensional image based on the plurality of mapping relations, displaying the three-dimensional image, and further finishing the test of the concrete sensor. It is worth noting that the sensor unit contains a variety of sensors including, but not limited to, temperature sensors, humidity sensors, displacement sensors, stress sensors. With the same performance energy harvesting chip, different performance energy harvesting antennas 109 may be detected with different sensitivities.
The reference sensitivity is obtained by using a standard concrete sensor, specifically, the standard concrete sensor is placed in an isolation chamber 106, then a test frequency is set through a host 101, a power output mode in the host 101 is set to be a scanning mode, and then a signal generator 102 is controlled to output a test radio frequency signal to be gradually reduced from large to small with a fixed step length; meanwhile, the data acquisition unit 105 monitors whether calibration test data can be acquired, the host 101 records the test radio frequency signal of the signal generator 102 and the calibration test data acquired by the data acquisition unit 105, the lowest power capable of acquiring the calibration test data is used as the sensitivity of the standard concrete sensor, and the sensitivity of the standard concrete sensor is used as the reference sensitivity.
Further, fig. 3 shows a schematic structural diagram of an environment constructed when a standard concrete sensor is selected, and it is worth explaining that a test environment used when a standard concrete sensor is selected is actually constructed outdoors, where the environment includes a movable scaffold 200, an uninterruptible power supply 201, a notebook computer 202, a data collector 105, a signal generator 102, a feeder 108, a dipole antenna 203, a panel antenna 204, a ground 205, a concrete model 206, and a standard concrete sensor 207. Specifically, an uninterruptible power supply 201, a notebook computer 202, a data collector 105, a signal generator 102, a feeder 108, a dipole antenna 203 and a panel antenna 204 are placed on a scaffold 200, and the uninterruptible power supply 201 supplies power to the notebook computer 202, the data collector 105 and the signal generator 102; the concrete form 206, standard concrete sensors 207 are placed on another scaffold 200.
In specific implementation, the platform of the scaffold 200 is 10 meters above the ground, so that the influence of the ground in a test environment can be reduced; in addition, the scaffold 200 is a movable maneuvering scaffold, which facilitates adjusting the distance between the scaffold and the scaffold during the testing process.
The concrete process for selecting a standard concrete sensor is as follows: firstly, placing a concrete sensor with normal function in a concrete model (capable of accommodating the concrete sensor), wherein the concrete model is a simulation model with small volume built by utilizing reinforced concrete; then, setting a test frequency in the host 101, setting a power output mode to a constant value continuous output mode, and setting a radio frequency signal to a value in an actual application scene; in the specific process, the distance between the energy transmission antenna 103 and the concrete sensor is slowly adjusted from near to far, the data acquisition condition is observed in real time in the process of gradually pulling the distance, the adjustment of the distance between the energy transmission antenna 103 and the concrete sensor is stopped when the data acquisition unit 105 cannot acquire test data, and the current distance between the energy transmission antenna 103 and the concrete sensor is measured and recorded; after a plurality of tests, the concrete sensor corresponding to the distance in the middle position is determined to be a standard concrete sensor.
With continued reference to fig. 2, the isolator 106 is provided with a feed line via 1061; in a particular implementation, the feed line 108 passes through the feed line via 1061 such that one end of the feed line 108 is disposed inside the space and the other end of the feed line 108 is disposed outside the space.
In order to simulate the transmission characteristics of electromagnetic waves in free space, the test system in the embodiment of the present application further includes an electromagnetic wave emission source, which is located inside the space of the isolation chamber 106 to emit electromagnetic waves inside the space of the isolation chamber 106. Meanwhile, the inner wall 1062 of the isolation chamber 106 is provided with a wave-absorbing material such as a polyurethane wave-absorbing sponge SA to absorb the electromagnetic waves emitted by the electromagnetic wave emitting source in the isolation chamber 106, so that only one transmission path is provided from one point of the electromagnetic wave to another point, thereby avoiding the problem of inaccurate test result caused by influence of reflection of the electromagnetic waves on the test data. Moreover, the outer wall of the isolation chamber 106 is made of high-permeability materials such as cold-rolled steel sheets, and the isolation door arranged on the isolation chamber 106 is also subjected to electromagnetic leakage prevention treatment, so that the isolation chamber 106 can be ensured to isolate signals inside the space from signals outside the space, and the transmission characteristics of the simulated electromagnetic waves are ensured to be accurate.
Preferably, as shown in fig. 2, the testing system further comprises a supporting device, the supporting device comprises a supporting table 1111, a supporting rod 1112 and a movable connecting rod 1113; supporting bench 1111, bracing piece 1112 and movable connecting rod 1113 all are located the space of isolation chamber 106 inside, and one side of supporting bench 1111 and the laminating of inner wall 1062 of isolation chamber 106 set up, and the bracing piece 1112 is connected the opposite side of supporting bench 1111 and the one end of movable connecting rod 1113, and the other end of movable connecting rod 1113 is connected with the concrete sensor, can realize the purpose of adjusting the gesture of concrete sensor through adjusting the movable connecting rod.
The test system of the embodiment of the application can simulate various actual working scenes in a fixed place, and any device and equipment in the test system do not need to be carried, so that the test efficiency is greatly improved; moreover, the constructed isolation chamber can simulate the environment of electromagnetic waves propagating in free space, and can isolate signals inside the space from signals outside the space, so that the influence of the electromagnetic waves on the test result due to ground reflection is avoided, and the accuracy of the test result is improved.
Based on the same inventive concept, the second aspect of the present application further provides a testing method applied to the testing system, and since the principle of solving the problem of the testing method in the present application is similar to that of the testing system in the present application, the implementation of the testing method can refer to the implementation of the method, and repeated details are not repeated.
Fig. 4 shows a flowchart of a testing method provided in an embodiment of the present application, which specifically includes:
s401, generating a control instruction, and transmitting a radio frequency signal corresponding to the control instruction in an isolation room based on the control instruction so as to enable the concrete sensor to obtain electric energy, wherein the isolation room is used for isolating a signal inside a space from a signal outside the space;
s402, receiving the test data transmitted by the concrete sensor, and determining the attribute of the concrete sensor based on the test data.
In yet another embodiment, fig. 5 shows a flow chart of a method for determining properties of a concrete sensor based on test data, including in particular:
s501, determining the sensitivity of the concrete sensor based on the radio frequency signal and the test data;
and S502, calculating the transmission distance of the concrete sensor according to the difference value between the sensitivity and the reference sensitivity.
In yet another embodiment, fig. 6 shows a flowchart of a method for determining a reference sensitivity, which specifically includes:
s601, transmitting a test radio frequency signal in an isolation chamber to enable a standard concrete sensor to obtain electric energy;
s602, receiving calibration test data transmitted by a standard concrete sensor;
s603, determining the reference sensitivity based on the test radio frequency signal and the calibration test data.
In yet another embodiment, fig. 7 shows a flow chart of a method for determining a standard concrete sensor, which specifically includes:
s701, placing the concrete sensor with normal function in a concrete model, wherein the concrete model can accommodate the concrete sensor;
s702, outputting a radio frequency signal by the radio frequency signal according to a preset test frequency;
s703, adjusting the distance between the energy transmission antenna and the concrete sensor by moving the scaffold, and recording the distance until the data acquisition unit cannot acquire the test data;
and S704, under the condition that a plurality of distances are obtained through measurement, determining that the concrete sensor corresponding to the distance in the middle position is a standard concrete sensor.
The invention has the following beneficial effects:
the embodiment of the invention can simulate various actual working scenes in a fixed field without carrying any device and equipment in a test system, thereby greatly improving the test efficiency; moreover, the constructed isolation chamber can simulate the environment of electromagnetic waves propagating in free space, and can isolate signals inside the space from signals outside the space, so that the influence of the electromagnetic waves on the test result due to ground reflection is avoided, and the accuracy of the test result is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A test system is characterized by comprising a host, a signal generator, an energy transmission antenna, a first communication antenna, a data collector, an isolation chamber, a power amplifier and/or a power attenuator, wherein the energy transmission antenna and the first communication antenna are positioned inside a space formed by the isolation chamber, the signal generator and the energy transmission antenna penetrate through the isolation chamber to be connected, the data collector and the first communication antenna penetrate through the isolation chamber to be connected, and the isolation chamber is used for isolating signals inside the space from signals outside the space;
the host generates a control instruction and sends the control instruction to the signal generator so as to control the signal generator to output a radio frequency signal; the energy transmission antenna receives the radio-frequency signal output by the signal generator and transmits the radio-frequency signal so that the concrete sensor can obtain electric energy; the first communication antenna receives test data transmitted by the concrete sensor and transmits the test data to the data acquisition unit, wherein the concrete sensor is positioned in the space of the isolation room; the host monitors the test data of the data acquisition unit and determines the attribute of the concrete sensor based on the test data;
the control unit generates a control instruction based on a preset signal output rule;
transmitting the control instruction to the signal generator so that the signal generator outputs a corresponding radio frequency signal based on the control instruction;
the host further comprises a processing unit; the processing unit monitors the data acquisition unit to determine whether the data acquisition unit receives the test data; under the condition that the data acquisition unit is determined to receive the test data, determining the attribute of the concrete sensor based on the test data, wherein the attribute comprises the sensitivity of the concrete sensor and the mapping relation between the posture of the concrete sensor and the transmission distance of the concrete sensor;
the output rule of the signal generator for outputting the radio frequency signal is that the output frequency is fixed firstly, and then power scanning is carried out, wherein the power scanning process is that the output power is adjusted on the current fixed output frequency and is gradually reduced from large to small by a step length of 0.5 dBm; after testing a fixed output frequency, switching to the next fixed output frequency, and continuing to perform power scanning according to the output rule to complete frequency scanning;
the power amplifier and/or the power attenuator are disposed between the signal generator and the energy transmission antenna to enhance and/or attenuate the radio frequency signal.
2. The test system of claim 1, further comprising: the supporting device comprises a supporting table, a supporting rod and a movable connecting rod; the utility model discloses a concrete sensor, including isolation chamber, brace table, bracing piece, movable connecting rod, support table, bracing piece and movable connecting rod, the brace table, bracing piece and movable connecting rod all are located inside the space of isolation chamber, one side of brace table with the inner wall laminating setting of isolation chamber, the bracing piece is connected the opposite side of brace table with movable connecting rod's one end, movable connecting rod's the other end with concrete sensor connects, in order to adjust concrete sensor's gesture.
3. The test system of claim 1, further comprising data lines and feed lines;
the host is connected with the signal generator through the data line and connected with the data acquisition unit through the other data line;
the signal generator is connected with the energy transmission antenna by the feeder line penetrating through the isolation chamber, and the first communication antenna is connected with the data acquisition unit by the other feeder line penetrating through the isolation chamber.
4. The test system of claim 3, wherein the isolator has a feed line via disposed thereon;
the feeder line penetrates through the feeder line via hole, so that one end of the feeder line is arranged inside the space, and the other end of the feeder line is arranged outside the space.
5. The test system of claim 1, further comprising an electromagnetic wave emission source positioned inside the space of the isolator chamber to emit electromagnetic waves inside the space of the isolator chamber.
6. The test system according to claim 5, wherein the isolation chamber has a wave absorbing material disposed on an inner wall thereof to absorb the electromagnetic waves emitted from the electromagnetic wave emitting source within the isolation chamber.
7. The test system of claim 1, further comprising an energy harvesting antenna and a second communication antenna; the energy acquisition antenna and the second communication antenna are arranged on the concrete sensor, the energy acquisition antenna acquires radio frequency signals transmitted by the energy transmission antenna, and the second communication antenna transmits test data generated by the concrete sensor to the first communication antenna.
8. A testing method applied to the testing system of any one of claims 1-7, comprising:
generating a control instruction, and transmitting a radio frequency signal corresponding to the control instruction in an isolation chamber based on the control instruction so as to enable a concrete sensor to obtain electric energy, wherein the isolation chamber is used for isolating a signal inside the space from a signal outside the space;
and receiving test data transmitted by the concrete sensor, and determining the attribute of the concrete sensor based on the test data.
9. The testing method of claim 8, wherein said determining attributes of said concrete sensor based on said test data comprises:
determining the sensitivity of the concrete sensor based on the radio frequency signal and the test data;
and calculating the transmission distance of the concrete sensor according to the difference value between the sensitivity and the reference sensitivity.
10. The test method of claim 9, wherein the step of determining the reference sensitivity comprises:
transmitting a test radio frequency signal in the isolation chamber to enable the standard concrete sensor to obtain electric energy;
receiving calibration test data transmitted by a standard concrete sensor;
determining a reference sensitivity based on the test radio frequency signal and the calibration test data;
the step of determining the standard concrete sensor comprises:
placing the concrete sensor with normal function in a concrete model, wherein the concrete model can accommodate the concrete sensor;
the radio frequency signal outputs a radio frequency signal according to a preset test frequency;
adjusting the distance between the energy transmission antenna and the concrete sensor through the movable scaffold and recording the distance until the data acquisition unit cannot acquire the test data;
and under the condition that a plurality of distances are obtained through measurement, determining that the concrete sensor corresponding to the distance in the middle position is a standard concrete sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404334.6A CN115752541A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110393071.2A CN113108824A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
| CN202211404334.6A CN115752541A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110393071.2A Division CN113108824A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115752541A true CN115752541A (en) | 2023-03-07 |
Family
ID=76716171
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211404334.6A Pending CN115752541A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
| CN202110393071.2A Pending CN113108824A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110393071.2A Pending CN113108824A (en) | 2021-04-13 | 2021-04-13 | Test system and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115752541A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114024883B (en) * | 2021-11-05 | 2023-11-17 | 江西洪都航空工业集团有限责任公司 | Method, device and system for open-loop parallel testing of multiple products of data link |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221386A (en) * | 2004-02-05 | 2005-08-18 | Hitachi Ltd | Calibration data control method for physical quantity sensor, physical quantity sensor, calibration device, and physical quantity sensing system |
| CN102507047A (en) * | 2011-09-30 | 2012-06-20 | 中北大学 | Non-contact passive sensor signal testing system |
| CN106483485A (en) * | 2016-11-03 | 2017-03-08 | 北京无线电计量测试研究所 | A kind of high strength field sensor calibrating method and system |
| CN106908673A (en) * | 2017-02-16 | 2017-06-30 | 北京宇航系统工程研究所 | A kind of high-altitude electric field radiation susceptibility automatization test system |
| CN107561123A (en) * | 2017-09-29 | 2018-01-09 | 长安大学 | A kind of beams of concrete damage monitoring system and monitoring method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8159364B2 (en) * | 2007-06-14 | 2012-04-17 | Omnilectric, Inc. | Wireless power transmission system |
| US8116703B2 (en) * | 2008-12-08 | 2012-02-14 | Apple Inc. | Wireless transmitter calibration using device receiver |
| CN101561481A (en) * | 2009-01-24 | 2009-10-21 | 国网电力科学研究院 | Method for calibrating high-frequency electric field probe |
| CN104569635B (en) * | 2013-10-15 | 2018-06-08 | 深圳市通用测试系统有限公司 | Wireless terminal antenna performance test system |
| CN103557989B (en) * | 2013-11-06 | 2014-11-05 | 济南大学 | Piezoelectric strain sensor, method for testing strain sensitivity of piezoelectric strain sensor and application of piezoelectric strain sensor |
| CN106992813B (en) * | 2017-02-16 | 2019-09-10 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of adaptive wireless information of low cost and energy multiplex transmission system |
| CN108152772B (en) * | 2017-12-26 | 2020-09-18 | 北京无线电计量测试研究所 | High-amplitude field intensity sensor calibration method based on microwave darkroom |
-
2021
- 2021-04-13 CN CN202211404334.6A patent/CN115752541A/en active Pending
- 2021-04-13 CN CN202110393071.2A patent/CN113108824A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221386A (en) * | 2004-02-05 | 2005-08-18 | Hitachi Ltd | Calibration data control method for physical quantity sensor, physical quantity sensor, calibration device, and physical quantity sensing system |
| CN102507047A (en) * | 2011-09-30 | 2012-06-20 | 中北大学 | Non-contact passive sensor signal testing system |
| CN106483485A (en) * | 2016-11-03 | 2017-03-08 | 北京无线电计量测试研究所 | A kind of high strength field sensor calibrating method and system |
| CN106908673A (en) * | 2017-02-16 | 2017-06-30 | 北京宇航系统工程研究所 | A kind of high-altitude electric field radiation susceptibility automatization test system |
| CN107561123A (en) * | 2017-09-29 | 2018-01-09 | 长安大学 | A kind of beams of concrete damage monitoring system and monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113108824A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20100007356A1 (en) | Electromagnetic shielding defect monitoring system and method for using the same | |
| CN207650157U (en) | A kind of detection device for door and window sound insulation property | |
| CN103293221A (en) | Non-destructive inspection apparatus for detecting internal defect of concrete structure using ultrasonic waves | |
| CN103983695A (en) | Wireless nonmetal ultrasonic detecting system | |
| KR101939757B1 (en) | System for measuring performance of antenna | |
| CN113109771B (en) | Calibration device for calibration instrument and true value calibration method for weather radar echo intensity | |
| CN106330348A (en) | Method and device for testing stray radiant power of wireless product | |
| CN102353323A (en) | Wireless-type transient-strain storage-testing system | |
| CN102507047A (en) | Non-contact passive sensor signal testing system | |
| CN115752541A (en) | Test system and test method | |
| CN203870069U (en) | Wireless nonmetallic ultrasonic detection system | |
| CN105933075A (en) | Terminal testing system and method | |
| CN101477154B (en) | Method for testing antenna omnidirectional radiation total power by using GTEM closet | |
| CN211178330U (en) | Quick positioner of floor calibrator check point | |
| CN107462777A (en) | A kind of system and method for being used to carry out multichannel power frequency electric field measurement under high humidity conditions | |
| Kildal et al. | Direct coupling as a residual error contribution during OTA measurements of wireless devices in reverberation chamber | |
| CN114280521B (en) | Calibration method and device of electromagnetic field probe, electronic equipment and storage medium | |
| CN113445553B (en) | On-spot detector of backfill compactness | |
| CN202149751U (en) | Wireless transient strain storage test system | |
| CN208143482U (en) | The test macro of audio product | |
| Linné et al. | Development of calibration technique for underwater transducers in free field conditions below 1000 Hz with results on an acoustical recorder | |
| CN209858761U (en) | Physical detection test device for simulating urban underground cavity | |
| CN201221940Y (en) | Crake depth testing instrument | |
| CN213067468U (en) | Building foundation depth detection device based on big dipper | |
| CN210780735U (en) | Signal generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |