CN115752541A - Test system and test method - Google Patents

Abstract

The invention provides a test system and a test method. In the test system: the energy transmission antenna and the first communication antenna are located inside the space formed by the isolation room, and the signal generator and the energy transmission antenna as well as the data collector and the first communication antenna are all worn Connected through the isolation room, the isolation room isolates the signal inside the space and the signal outside the space; the host generates control commands and sends them to the signal generator to control the signal generator to output radio frequency signals; the energy transmission antenna receives the radio frequency signals output by the signal generator, and transmit so that the concrete sensor obtains electric energy; the first communication antenna receives the test data transmitted by the concrete sensor, and transmits the test data to the data collector, and the concrete sensor is located inside the space of the isolation room; the host monitors the test data of the data collector, based on The test data determine the properties of the concrete sensor. The testing system of the invention can improve the testing efficiency of testing concrete sensors and the accuracy of testing results.

Description

A test system and test method

This application is a divisional application of a patent application entitled "A Testing System and Testing Method". The filing date of the original application is April 13, 2021, 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 testing method.

Background technique

Reinforced concrete is widely used in various structures such as tunnels, buildings, bridges, etc. Regular monitoring of these large structures can greatly reduce the loss of life and property caused by their collapse. It is also necessary to carry out targeted inspections on structures after large-scale natural disasters such as floods, earthquakes, and typhoons. At present, passive sensors can be embedded in concrete to enable concrete sensors to effectively monitor parameters such as temperature, humidity, stress changes, steel bar displacement and corrosion, etc., and it has the advantages of low cost, real-time, and high efficiency.

Here, the concrete sensor also needs to be tested, calibrated, etc. during production to ensure its accuracy. The existing test method is: move the concrete sensor, energy supply communication equipment and bulky concrete model to an open field, and simulate the actual working scene to test the energy supply distance. However, this test method requires a lot of manpower to move the test equipment, resulting in low test efficiency; moreover, when testing in an open field, the electromagnetic waves reflected by the ground will affect the test results, resulting in low accuracy of the test results.

Therefore, there is an urgent need for a testing method to detect concrete sensors.

Contents of the invention

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a testing system and a testing method.

To achieve the above object, the present invention provides the following scheme:

A test system, 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, the energy transmission antenna and the first communication antenna are located at Inside the space formed by the isolation room, the signal generator is connected to the energy transmission antenna through the isolation room, and the data collector is connected to the first communication antenna through the isolation room, wherein, The isolation chamber is used to isolate signals inside the space from signals outside the space;

The host generates a control command and sends it to the signal generator 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 it so that the concrete sensor can obtain Electric energy; the first communication antenna receives the test data transmitted by the concrete sensor, and transmits the test data to the data collector, wherein the concrete sensor is located inside the space of the isolation room; the host monitoring the test data of the data collector, and determining attributes of the concrete sensor based on the test data;

The control unit generates control instructions based on preset signal output rules;

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 also includes a processing unit; the processing unit monitors the data collector to determine whether the data collector has received the test data; if it is determined that the data collector has received the test data , based on the test data, determine the attribute of the concrete sensor, wherein the attribute includes 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;

The output rule of the radio frequency signal output by the signal generator is to fix the output frequency first, and then perform power scanning. The process of the power scanning is to adjust the output power from large to small to gradually decrease with a step size of 0.5dBm on the current fixed output frequency; After testing a fixed output frequency, switch to the next fixed output frequency, and continue to scan power according to the above output rules to complete the frequency scan;

The power amplifier and/or power attenuator is arranged between the signal generator and the energy transmission antenna to enhance and/or weaken the radio frequency signal.

Preferably, it also includes: a support device, the support device includes a support platform, a support rod and a movable link; the support platform, support rods and movable links are all located inside the space of the isolation chamber, and the support platform One side is attached to the inner wall of the isolation chamber, the other side of the support rod is connected to the other side of the support platform and one end of the movable link, and the other end of the movable link is connected to the concrete sensor, to adjust the attitude of the concrete sensor.

Preferably, data lines and feeder lines are also included;

The host is connected to the signal generator through the data line, and connected to the data collector through another data line;

The signal generator is connected to the energy transmission antenna through the isolation chamber through the feeder, and the first communication antenna is connected to the data collector through the isolation chamber through another feeder.

Preferably, feeder via holes are provided on the isolation chamber;

The feeder passes through the feeder via hole, so that one end of the feeder is placed inside the space, and the other end of the feeder is placed outside the space.

Preferably, an electromagnetic wave emitting source is further included, the electromagnetic wave emitting source is located inside the space of the isolation chamber, so as to emit electromagnetic waves inside the space of the isolation chamber.

Preferably, a wave-absorbing material is provided on the inner wall of the isolation chamber to absorb electromagnetic waves emitted by an electromagnetic wave emission source in the isolation chamber.

Preferably, it also includes an energy harvesting antenna and a second communication antenna; the energy harvesting antenna and the second communication antenna are both arranged on the concrete sensor, and the energy harvesting antenna collects the radio frequency signal emitted by the energy transmission antenna , the second communication antenna transmits the test data generated by the concrete sensor to the first communication antenna.

A test method, the test method is applied to the above-mentioned test system, which includes:

Generate a control instruction, and transmit a radio frequency signal corresponding to the control instruction in the isolation room based on the control instruction, so that the concrete sensor can obtain electric energy, wherein the isolation room is used to isolate the signal inside the space from the space external signals;

The test data transmitted by the concrete sensor is received, and the attribute of the concrete sensor is determined based on the test data.

Preferably, said determining the properties of said concrete sensor based on said test data comprises:

Determine the sensitivity of the concrete sensor based on the radio frequency signal and test data;

The transmission distance of the concrete sensor is calculated from the difference between this sensitivity and the baseline sensitivity.

Preferably, the step of determining the benchmark sensitivity comprises:

Transmit a test radio frequency signal in the isolation chamber to power the standard concrete sensor;

Receive calibration test data transmitted by standard concrete sensors;

Determine baseline sensitivity based on test RF signal and calibration test data;

The steps of determining said standard concrete sensor include:

placing a functioning concrete sensor in a concrete model, wherein the concrete model is capable of accommodating the concrete sensor;

The radio frequency signal outputs the radio frequency signal according to the preset test frequency;

Adjust the distance between the energy transmission antenna and the concrete sensor by moving the scaffold and record until the data collector cannot obtain test data;

In the case that multiple distances are measured, it is determined that the concrete sensor corresponding to the median distance is the standard concrete sensor.

According to the specific embodiments provided by the invention, the invention discloses the following technical effects:

The test system of the embodiment of the present invention can simulate a variety of actual working scenarios in a fixed place without moving any devices and equipment in the test system, which greatly improves the test efficiency; and the isolation room can not only simulate electromagnetic waves in free space It can also isolate the signal inside the space from the signal outside the space, avoiding the influence of electromagnetic waves on the test results due to ground reflection, and improving the accuracy of the test results.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 shows a schematic structural diagram of a test system provided by the present application;

Fig. 2 shows a schematic diagram of the physical structure of a test system provided by the present application;

Fig. 3 shows the structural schematic diagram of the environment built when selecting the standard concrete sensor provided by the present application;

Fig. 4 shows a flow chart of a test method provided by the application;

Fig. 5 shows a flow chart of determining the attribute of the concrete sensor based on the test data in a test method provided by the present application;

Fig. 6 shows the flowchart of determining benchmark sensitivity in a kind of test method provided by the present application;

Fig. 7 shows a flow chart of determining a standard concrete sensor in a test method provided by the present application.

Description of reference signs: 101-host; 1011-control unit; 1012-processing unit; 102-signal generator; 103-energy transmission antenna; 104-first communication antenna; 105-data collector; 106-isolation room; 1061 -feeder through hole; 1062-inner wall of isolation chamber; 107-data line; 108-feeder; 109-energy harvesting antenna; 110-second communication antenna; 1111-support platform; 1112-support rod; 200-removable scaffolding; 201-uninterruptible power supply; 202-laptop; 203-dipole antenna; 204-panel antenna; 205-ground; 206-concrete model; 207-standard concrete sensor.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to 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 present application. The occurrences of this 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 understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a series of steps, processes, methods, etc. are not limited to the listed steps, but optionally also include steps that are not listed, or optionally also include the inherent characteristics of these processes, methods, products or equipment. other steps.

The purpose of the present invention is to provide a test system and a test method, which can improve the accuracy of test results.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In a first aspect, an embodiment of the present application provides a testing system, which is used 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 . Among them, the isolation room 106 is pre-built, and it has a certain space. When simulating the actual working scene, the host computer 101, the signal generator 102 and the data collector 105 are placed outside the space of the isolation room 106, and the energy transmission antenna 103 and the first communication antenna 104 are placed inside the space of the isolation room 106, the signal generator 102 is connected with the energy transmission antenna 103 through the isolation room 106, and the data collector 15 is connected with the first communication antenna 104 through the isolation room. The test system including the isolation chamber 106 provided by the embodiment of the present application is placed in a fixed place without a lot of manpower to carry the test equipment, which greatly improves the test efficiency; and the test system is connected to the mains, eliminating the need for mobile power supplies. Energy supply time limit, higher flexibility.

In a specific implementation, the host 101 generates a control instruction, and controls the signal generator 102 to output a radio frequency signal based on the control instruction. Specifically, the host computer 101 includes a control unit 1011, which stores signal output rules preset by the tester, so that the control unit 1011 generates control instructions based on the preset signal output rules; of course, the signal output rules It can also be transmitted to the control unit 1011 by other electronic devices through wired transmission and/or wireless transmission, 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 the control unit 1011 generates the control instruction, it transmits the control instruction to the signal generator 102, so that the signal generator 102 outputs a corresponding radio frequency signal based on the control instruction. Wherein, referring to the schematic diagram of the physical structure of the testing system shown in FIG. 2 , it can be seen that the control unit 1011 of the host computer 101 is connected to the signal generator 102 through a data line 107 , and the data line 107 is used to transmit control instructions.

Wherein, the signal generator 102 outputs a corresponding radio frequency signal based on a specific frequency in the signal output rule. In a specific implementation, the specific frequency is any frequency within the working frequency range of the concrete sensor, so that the output power ranges from -30dBm to 36dBm. Specifically, the signal output rule is to first fix the output frequency, and then perform a power scan. The process of the power scan is to adjust the output power from large to small at the current fixed output frequency and gradually reduce it in steps of 0.5dBm; After the frequency is output, switch to the next fixed output frequency, and continue to scan the power in the above-mentioned way to complete the frequency scan. 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 also includes a power amplifier and/or a power attenuator; the maximum radio frequency signal output by the signal generator 102 is lower than the specific radio frequency signal In the case of the upper limit of , the signal generator 102 is set to be connected with the power amplifier to amplify the radio frequency signal and transmit the amplified radio frequency signal to the energy transmission antenna 103; the minimum radio frequency signal output by the signal generator 102 is still higher than the specific radio frequency In the case of the lower limit of the signal, the signal generator 102 is set to be connected with the power attenuator to weaken the radio frequency signal and transmit the weakened radio frequency signal to the energy transmission antenna 103. In the embodiment of the application, the power amplifier or power attenuator increases Increase or decrease the transmitted radio frequency signal to simulate the decrease or increase of the distance between the signal generator 102 and the concrete sensor, that is, no manual intervention is required to adjust the physical distance between the signal generator 102 and the concrete sensor, and the operation is convenient. Of course, other digital regulators, such as digital attenuators, can also be set to reduce the step size of the radio frequency signal.

Continue to refer to Fig. 2, signal generator 102 is connected with energy transmission antenna 103 by feeder 108, after signal generator 102 generates radio frequency signal, transmits radio frequency signal to energy transmission antenna 103, so that energy transmission antenna 103 transmits radio frequency signal to The space interior of the isolation chamber 106 .

In a specific implementation, the concrete sensor is buried under the concrete, so in the test system of the embodiment of the present application, the concrete sensor is arranged inside the space of the isolation chamber 106 . Considering that the concrete sensor is a passive sensor, that is, there is no battery inside it, referring to Fig. 1 and Fig. 2, the test system provided by the embodiment of the present application also includes an energy harvesting antenna 109, which is arranged on the concrete sensor, The energy harvesting antenna 109 can collect the radio frequency signal transmitted by the energy transmission antenna 103 in real time, and then use the radio frequency signal to provide electric energy for the concrete sensor, wherein the working frequency band of the energy transmission antenna 103 covers the working frequency band of the energy harvesting antenna 109 on the concrete sensor, and The form of the energy transmission antenna 103 can be 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 includes a data processing unit, a data storage unit, a communication unit and a sensor unit. After the concrete sensor obtains electric energy, that is, the data processing unit, data storage unit, communication unit and sensor unit can all work normally, that is, the sensor unit Start collecting one or more types of data for concrete. Afterwards, the sensor unit transmits the collected data to the data storage unit, so that the data storage unit stores the data; the sensor unit also transmits the collected data to the data processing unit, so that the data processing unit performs packaging, packaging, etc. , and transmit the processed test data to the communication unit.

Further, as shown in FIG. 2 , the test system of the embodiment of the present application further includes a second communication antenna 110 communicatively connected to the first communication antenna 104, the second communication antenna 110 is arranged on the concrete sensor, and then the concrete sensor generates The test data is transmitted 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 then the second communication antenna 110 transmits the test data to the first communication antenna 104 .

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. Wherein, the working frequency band of the data collector 105 and the first communication antenna 104 of the data collector 105 is the same as that of the communication unit of the concrete sensor. Here, the form of the first communication antenna 104 may be any one of a dipole, a horn antenna, and a flat reflector antenna.

Further, the host 101 is connected to 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 properties of the concrete sensor based on the test data. Specifically, the host computer 101 also includes a processing unit 1012; the processing unit 1012 monitors the data collector 105 to determine whether the data collector 105 has received test data; , to determine the properties of the concrete sensor, the properties include 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 testers to view the test results, the processing unit 1012 can also display the test data and the properties of the concrete sensor in the form of data visualization.

Wherein, the processing unit 1012 determines the sensitivity of the concrete sensor based on the radio frequency signal and the test data, and when the processing unit 1012 can monitor the test data, the minimum power among the powers indicated by the radio frequency signal is used as the sensitivity of the concrete sensor. Calculate the transmission distance of the concrete sensor according to the difference between the sensitivity and the reference sensitivity, and establish a mapping relationship between the attitude of the concrete sensor such as the spatial angle and the transmission distance. After completing all the frequency scans, multiple mapping relationships are obtained. Based on multiple A three-dimensional image is generated and displayed, and then the test of the concrete sensor is completed. It is worth noting that the sensor unit contains various sensors, including but not limited to temperature sensors, humidity sensors, displacement sensors, and stress sensors. Under the condition of energy harvesting chips with the same performance, energy harvesting antennas 109 with different performances will be detected with different sensitivities.

Here, the reference sensitivity is obtained by using a standard concrete sensor. Specifically, the standard concrete sensor is placed in the isolation chamber 106, and then the test frequency is set through the host computer 101, and the power output mode in the host computer 101 is set to scan mode, and then the control signal is generated. The test radio frequency signal output by the device 102 is gradually reduced from large to small with a fixed step size; at the same time, the data collector 105 monitors whether the calibration test data can be collected, and the host computer 101 records the test radio frequency signal of the signal generator 102 and the data collected by the data collector 105. The calibration test data, the lowest power that can collect 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 the environment built when selecting the standard concrete sensor. It is worth noting that the test environment used when selecting the standard concrete sensor is actually built outdoors. The environment includes movable scaffolding 200, Uninterruptible power supply 201, notebook computer 202, data collector 105, signal generator 102, feeder 108, dipole antenna 203, panel antenna 204, ground 205, concrete model 206, standard concrete sensor 207. Specifically, uninterruptible power supply 201, notebook computer 202, data collector 105, signal generator 102, feeder 108, dipole antenna 203, panel antenna 204 are placed on a scaffold 200, and uninterruptible power supply 201 supplies notebook computer 202, The data collector 105 and the signal generator 102 are powered; the concrete model 206 and the standard concrete sensor 207 are placed on another scaffold 200 .

In a specific implementation, the platform of the scaffold 200 is more than 10 meters above the ground, thereby reducing the impact of the ground in the test environment; and the scaffold 200 is a movable motorized scaffold, which is convenient for adjusting the distance between the two during the test.

The specific process of selecting a standard concrete sensor is as follows: firstly, place a functioning concrete sensor in a concrete model (capable of accommodating the concrete sensor), wherein the concrete model is a small simulation model built with reinforced concrete; after that, the host Set the test frequency in 101, and set the power output mode to the fixed value continuous output mode, and set the radio frequency signal to the value in the actual application scene; in the specific process, slowly adjust the energy transmission antenna 103 from near to far. The distance between the concrete sensors, observe the data acquisition situation in real time in the process of gradually pulling away the distance, stop adjusting the distance between the energy transmission antenna 103 and the concrete sensor when the data collector 105 fails to collect test data, measure and record the current The distance between the energy transmission antenna 103 and the concrete sensor; after multiple tests, it is determined that the concrete sensor corresponding to the median distance is a standard concrete sensor.

Continuing to refer to FIG. 2 , the isolation chamber 106 is provided with a feeder through hole 1061; in a specific implementation, the feeder 108 passes through the feeder through hole 1061, so that one end of the feeder 108 is placed inside the space, and the other end of the feeder 108 is placed 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 emitting source located inside the space of the isolation chamber 106 to emit electromagnetic waves inside the space of the isolation chamber 106 . Simultaneously, the inner wall 1062 of the isolation chamber 106 is provided with a wave-absorbing material such as polyurethane absorbing sponge SA, etc., to absorb the electromagnetic wave emitted by the electromagnetic wave emission source in the isolation chamber 106, so that there is only one transmission path for the electromagnetic wave from one point to another point, avoiding the Electromagnetic wave reflection affects the test data and leads to inaccurate test results. Moreover, the outer wall of the isolation chamber 106 is made of high magnetic permeability materials such as cold-rolled steel plates, and the isolation door provided on the isolation chamber 106 is also subjected to anti-electromagnetic leakage treatment, thereby ensuring that the isolation chamber 106 can isolate signals inside the space from signals outside the space, ensuring The simulated transmission characteristics of electromagnetic waves are accurate.

Preferably, as shown in FIG. 2 , the testing system also includes a support device, and the support device includes a support table 1111, a support rod 1112 and a movable link 1113; Inside the space, one side of the support platform 1111 is fitted to the inner wall 1062 of the isolation chamber 106, the support rod 1112 is connected to the other side of the support platform 1111 and one end of the movable link 1113, and the other end of the movable link 1113 is connected to the concrete sensor Connection, the purpose of adjusting the posture of the concrete sensor can be achieved by adjusting the movable connecting rod.

The test system of the embodiment of the present application can simulate a variety of actual working scenarios in a fixed place without moving any devices and equipment in the test system, which greatly improves the test efficiency; and, the isolation room can not only simulate electromagnetic waves in free space It can also isolate the signal inside the space from the signal outside the space, avoiding the influence of electromagnetic waves on the test results due to ground reflection, and improving the accuracy of the test results.

Based on the same inventive concept, the second aspect of the present application also provides a test method applied to the above-mentioned test system. Since the problem-solving principle of the test method in the present application is similar to that of the above-mentioned test system in the present application, the implementation of the test method can be Refer to the implementation of the method, and the repetition will not be repeated.

Figure 4 shows a flow chart of a testing method provided in the embodiment of the present application, specifically including:

S401, generating a control command, and transmitting a radio frequency signal corresponding to the control command in the isolation room based on the control command, so that the concrete sensor obtains electric energy, wherein the isolation room is used to isolate the signal inside the space from the signal outside the space;

S402. Receive test data transmitted by the concrete sensor, and determine attributes of the concrete sensor based on the test data.

In yet another embodiment, FIG. 5 shows a flow chart of a method for determining attributes of a concrete sensor based on test data, which specifically includes:

S501, determining the sensitivity of the concrete sensor based on the radio frequency signal and the test data;

S502. Calculate the transmission distance of the concrete sensor according to the difference between the sensitivity and the reference sensitivity.

In yet another embodiment, FIG. 6 shows a flowchart of a method for determining benchmark sensitivity, which specifically includes:

S601, transmitting a test radio frequency signal in the isolation room, so that the standard concrete sensor can obtain electric energy;

S602, receiving the calibration test data transmitted by the standard concrete sensor;

S603. Determine a reference sensitivity based on the test radio frequency signal and the calibration test data.

In yet another embodiment, FIG. 7 shows a flowchart of a method for determining a standard concrete sensor, which specifically includes:

S701, placing a concrete sensor with normal function in a concrete model, wherein the concrete model can accommodate the concrete sensor;

S702, the radio frequency signal outputs the radio frequency signal according to the preset test frequency;

S703, adjusting and recording the distance between the energy transmission antenna and the concrete sensor by moving the scaffold until the data collector cannot obtain test data;

S704, in the case that multiple distances are measured, determine that the concrete sensor corresponding to the median distance is a standard concrete sensor.

The beneficial effects of the present invention are as follows:

The embodiment of the present invention can simulate a variety of actual working scenarios in a fixed site without moving any devices and equipment in the test system, which greatly improves the test efficiency; moreover, the built isolation room can not only simulate the propagation of electromagnetic waves in free space The environment can also isolate the signal inside the space from the signal outside the space, avoiding the influence of electromagnetic waves on the test results due to ground reflection, and improving the accuracy of the test results.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, there will be changes in specific implementation methods and application ranges. In summary, the contents of this specification should not be construed as limiting the present 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.

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