A device and method for testing radio frequency unit performance

Abstract

The embodiment of the present application provides a device and method for testing the performance of a radio frequency unit, wherein the radio frequency unit includes a connected radio frequency antenna and a collector, wherein the radio frequency antenna is used to transmit radio frequency signals, and the collector is used to read the radio frequency signals fed back to the radio frequency antenna and parse them into temperature data, wherein one of the radio frequency antenna and the collector is a test piece, and the other is a standard piece; the device includes: a metal cabinet having a sealed cavity for accommodating a cable connector; a temperature sensor disposed on the cable connector, wherein the temperature sensor is used to receive the radio frequency signal sent by the radio frequency antenna and feed back the radio frequency signal carrying temperature information to the radio frequency antenna; and a control terminal, wherein the control terminal is connected to the collector and is used to receive temperature data, and determine the performance of the test piece according to the frequency of the temperature data received within at least one sampling period. The present application can quickly identify defective products in the radio frequency unit, and has high detection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of radio frequency unit detection, and in particular to a device and method for testing the performance of a radio frequency unit. Background Art

[0002] The ring main unit is an important part of the 10KV power supply network. Whether its operation is stable is directly related to the reliability of the power supply network. Cable joints are widely used in ring main units as common components for connecting different cables. However, due to improper installation between cable joints and cables, poor cable contact, high ambient temperature, poor heat dissipation and other reasons, cable joints are prone to heat. When the temperature of the cable joint is too high, it will undergo severe oxidation, which will reduce the life of the cable sharply. In addition, excessive temperature can easily cause safety accidents such as explosion, insulation breakdown and combustion of the cable joint, resulting in large-scale power outages in the power supply network and affecting the reliability of the power supply process. In severe cases, it may even cause fires, which greatly affect the safety of the ring main unit itself and the power supply network. Therefore, it is necessary to monitor the temperature of the cable joints inside the ring main unit to ensure the safety of the power supply network.

[0003] At present, the temperature of the cable joint is mainly monitored by wireless temperature sensors, and the temperature information of the wireless temperature sensor is collected and processed by radio frequency units. However, since the cabinets of the ring network cabinets are mostly closed metal cabinets, the radio frequency signals generated by the radio frequency units are easily affected by the metal cabinets, which is not conducive to the transmission of radio frequency signals.

[0004] In view of this, testing the performance of the RF unit to ensure that it is as unaffected as possible by the confined metal space during the RF signal transmission process and to maintain the stability of the RF signal transmission has become an urgent issue to be resolved. Summary of the invention

[0005] The embodiments of the present application provide a device and method for testing the performance of a radio frequency unit. The device can test the performance of the radio frequency unit before the radio frequency unit leaves the factory, thereby ensuring the reliability and stability of the radio frequency signal transmission process.

[0006] In a first aspect, an embodiment of the present application provides a device for testing the performance of a radio frequency unit, wherein the radio frequency unit includes a radio frequency antenna and a collector connected to each other, wherein the radio frequency antenna is used to transmit a radio frequency signal, and the collector is used to read the radio frequency signal fed back to the radio frequency antenna and parse it into temperature data, wherein one of the radio frequency antenna and the collector is a device to be tested, and the other is a standard device;

[0007] The device includes: a metal cabinet having a sealed cavity for accommodating a cable connector; a temperature sensor arranged at the cable connector, the temperature sensor being used to receive a radio frequency signal sent by the radio frequency antenna and to feed back the radio frequency signal carrying temperature information to the radio frequency antenna; a control terminal, the control terminal being connected to the collector and being used to receive the temperature data and determine the performance of the device to be tested based on the frequency of the temperature data received within at least one sampling period.

[0008] As a preferred implementation of an embodiment of the present application, the cable connector is used to connect the cable, and the device also includes a fixing frame arranged in the sealed cavity, the fixing frame includes a clamping portion and a snap-fit ​​portion connected to each other, and through the cooperation between the clamping portion and the cable in the sealed cavity, and the snap-fit ​​portion and the temperature sensor, the temperature sensor can detect the temperature of the cable connector.

[0009] As a preferred implementation of the embodiment of the present application, the clamping portion is an arc-shaped hoop, the engaging portion is a bracket with a limiting groove, the temperature sensor is provided with a fixing hole, and the connection between the temperature sensor, the fixing frame and the cable is achieved by the contact between the inner arc surface of the arc-shaped hoop and the outer surface of the cable, and the cooperation between the bracket and the fixing hole.

[0010] As a preferred implementation manner of the embodiment of the present application, the arc hoop and the cable are interference fit; the temperature sensor includes a base plate and a sensor body arranged on the base plate, the fixing holes are opened on both sides of the base plate, and the bracket passes through the fixing holes to enable the base plate to engage with the limit groove.

[0011] As a preferred implementation of an embodiment of the present application, the metal cabinet includes a cabinet body having an identification groove and a cabinet door detachably connected to the cabinet body, the collector is located outside the sealed cavity, the RF antenna is arranged on the inner wall of the cabinet body, and the projection of the RF antenna on the inner wall of the cabinet body is located in the identification groove.

[0012] As a preferred implementation manner of the embodiment of the present application, center lines of the radio frequency antenna, the identification groove and the temperature sensor are collinear.

[0013] As a preferred implementation manner of the embodiment of the present application, the radio frequency antenna is fixed to the identification groove by magnetic attraction.

[0014] As a preferred implementation of the embodiment of the present application, the metal cabinet is made of aluminum-zinc steel plate.

[0015] In a second aspect, an embodiment of the present application further provides a method for testing the performance of a radio frequency unit, the method being applied to a device for testing the performance of a radio frequency unit as described above, the radio frequency unit comprising a radio frequency antenna and a collector connected to each other, one of the radio frequency antenna and the collector being a device under test, the other being a standard part, and the device under test and the standard part being matched to form a radio frequency unit under test, the method comprising the following steps:

[0016] The control terminal receives the temperature data collected by the radio frequency unit to be tested, wherein the temperature data is collected by the radio frequency unit to be tested according to a preset sampling power and sampling interval on the radio frequency signal fed back by the temperature measurement sensor, and the sampling power has multiple levels that increase sequentially from low to high;

[0017] In the same preset sampling period, the control terminal calculates the collection frequency of the temperature data at the same level of sampling power;

[0018] When the acquisition frequency is less than a preset threshold, the control terminal calculates the acquisition frequency of the temperature data at the next level of the sampling power until the acquisition frequency of the temperature data at all the sampling powers is less than the threshold, and the test piece is determined as a defective product.

[0019] As a preferred implementation of an embodiment of the present application, within the same preset sampling period, after the control terminal calculates the collection frequency of the temperature data under the same level of the sampling power, the method also includes: when the collection frequency is greater than or equal to a preset threshold, determining the test piece as a qualified product.

[0020] The embodiment of the present application provides a device and method for testing the performance of a radio frequency unit, and the device can test the performance of the radio frequency unit before the radio frequency unit leaves the factory, thereby ensuring the reliability and stability of the radio frequency signal transmission process. In addition, compared with the method of testing the performance of the radio frequency unit on site, the present application advances the inspection procedure, thereby reducing the difficulty of on-site construction and inspection of the equipment and saving manpower and material resources. Specifically, the present application simulates the installation environment of the radio frequency unit through the setting of a metal cabinet, so that the subsequent inspection and testing process is closer to the actual application scenario, and the accuracy of the performance inspection of the radio frequency unit is improved. In addition, in the present application, the control terminal is directly connected to the radio frequency unit to be tested, and the performance of the radio frequency unit to be tested is tested through a preset inspection procedure, so that defective products in the radio frequency unit can be quickly identified, which is conducive to ensuring the stability of the communication process when the overall equipment is actually used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a device for testing the performance of a radio frequency unit provided in an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the internal structure of a metal cabinet provided in an embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of a fixing frame provided in an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of a temperature measurement sensor provided in an embodiment of the present application;

[0025] Figure 5 It is a structural schematic diagram of a metal cabinet provided in an embodiment of the present application;

[0026] Figure 6 It is a flowchart of a method for testing the performance of a radio frequency unit provided in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 100 RF units, 110 RF antennas, 120 collectors;

[0029] 200 metal cabinet, 210 cable connector, 220 cable, 230 cabinet body, 231 identification slot, 240 cabinet door, 241 handle;

[0030] 300 temperature sensor, 310 base plate, 320 sensor body, 311 fixing hole;

[0031] 400 control terminal;

[0032] 500 fixing frame, 510 clamping portion, 520 engaging portion, 521 limiting groove. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0034] At present, when monitoring the temperature of the cable joint in the ring network cabinet, the temperature of the cable joint is mainly monitored by a wireless temperature sensor set on the surface of the cable joint, and the wireless temperature sensor can send the collected temperature information to the radio frequency unit in the form of a radio frequency signal, and the radio frequency unit can process the received radio frequency signal and send it to the control terminal or the host computer. Among them, the radio frequency unit is usually composed of an radio frequency antenna for transmitting radio frequency signals and a collector for parsing the temperature information in the radio frequency signal into temperature data. The collector is generally set on the outside of the ring network cabinet, and the radio frequency antenna is generally set in a closed metal space under the ring network cabinet, so as to be close to the wireless temperature sensor also located under the ring network cabinet, thereby improving the radio frequency antenna's collection effect on radio frequency signals.

[0035] However, RF signals are essentially a type of electromagnetic wave. The interaction between metal and electromagnetic waves, such as the reflection and absorption of electromagnetic waves by metal, and the shielding of electromagnetic waves by metal, will affect the transmission of electromagnetic waves, and accordingly, the transmission of RF signals. Taking the reflection of electromagnetic waves by metal as an example, whether it is the RF signal sent by the wireless temperature sensor to the RF antenna or the RF signal sent by the RF antenna to the collector, when it is transmitted in a closed metal space, it will be reflected by the inner wall of the metal cabinet, and part of the reflected RF signal will offset the normally transmitted RF signal, thereby affecting the stability of the RF unit signal transmission.

[0036] Based on this, in order to improve the stability of RF signal transmission in the RF unit, refer to Figure 1 As shown, the embodiment of the present application provides a device for testing the performance of a radio frequency unit. It is understandable that the radio frequency unit 100 may include a radio frequency antenna 110 and a collector 120 connected to each other, the radio frequency antenna 110 is used to transmit radio frequency signals, the collector 120 is used to read the radio frequency signals fed back to the radio frequency antenna 110, and parse them into temperature data, and one of the radio frequency antenna 110 and the collector 120 is a test piece, and the other is a standard piece.

[0037] In addition, the device may include a metal cabinet 200, a temperature sensor 300 and a control terminal 400. The metal cabinet 200 has a sealed cavity for accommodating a cable connector 210; the temperature sensor 300 is disposed at the cable connector 210, and is used to receive a radio frequency signal sent by the radio frequency antenna 110, and feed back the radio frequency signal carrying temperature information to the radio frequency antenna 110; the control terminal 400 is connected to the collector 120, and is used to receive temperature data, and determine the performance of the device under test according to the frequency of the temperature data received within at least one sampling period.

[0038] It should be noted that, since the RF unit 100 in the embodiment of the present application is composed of two parts, in order to improve the detection efficiency and accuracy of the detection when testing the performance of the RF unit 100. Preferably, the RF antenna 110 and the collector 120 in the RF unit 100 can be tested separately, that is, one of the RF antenna 110 and the collector 120 is selected as a standard part, and the other is selected as a part to be tested. Among them, the standard part is a part with good performance, and the part to be tested is a part that needs to be tested.

[0039] In addition, the metal cabinet 200 in the embodiment of the present application can be made of a variety of materials, such as copper, aluminum, stainless steel, etc. However, in order to simulate the effect of the real ring main cabinet 230 on the radio frequency signal, preferably, the metal cabinet 200 can be made of aluminum-zinc steel plate. Optionally, the type of the control terminal 400 is not limited in the embodiment of the present application, and it can be any one of the following: a desktop computer, a laptop computer, a tablet computer, a mobile phone, etc.

[0040] Furthermore, in the embodiment of the present application, the temperature measuring sensor 300 is preferably a passive wireless temperature sensor. Compared with the traditional infrared sensor, the passive wireless temperature sensor can perform fixed-point real-time monitoring of the temperature of the cable connector 210, and send the monitored temperature information to the terminal device via a radio frequency signal. In this way, accurate temperature measurement can be achieved after one installation without manual intervention, and the degree of automation is high.

[0041] The device for testing the performance of the RF unit 100 provided in the embodiment of the present application can test the performance of the RF unit 100 before the RF unit 100 leaves the factory, thereby ensuring the reliability and stability of the RF signal transmission process. In addition, compared with the method of testing the performance of the RF unit 100 on site, the present application advances the inspection procedure, thereby reducing the difficulty of on-site construction and inspection of the equipment and saving manpower and material resources. Specifically, the present application simulates the installation environment of the RF unit 100 by setting up a metal cabinet 200, so that the subsequent inspection and testing process is closer to the actual application scenario, and the accuracy of the performance inspection of the RF unit 100 is improved. In addition, in the present application, the control terminal 400 is directly connected to the RF unit 100 to be tested, and the performance of the RF unit 100 to be tested is tested through a preset inspection procedure, so that defective products in the RF unit 100 can be quickly identified, thereby ensuring the stability of the communication process when the overall device is actually used.

[0042] In some embodiments, reference Figure 1 , Figure 2 and Figure 3As shown, the cable connector 210 is used to connect the cable 220, and the device may also include a fixing frame 500 arranged in the sealed cavity, and the fixing frame 500 includes a clamping portion 510 and a snap-fit ​​portion 520 connected to each other, and through the cooperation between the clamping portion 510 and the cable in the sealed cavity, and the snap-fit ​​portion 520 and the temperature sensor 300, the temperature sensor 300 can detect the temperature of the cable connector 210.

[0043] As a preferred implementation of the present application, refer to Figure 3 and Figure 4 As shown, the clamping portion 510 is an arc-shaped hoop, the engaging portion 520 is a bracket with a limiting groove 521, and the temperature sensor 300 is provided with a fixing hole 311. The connection among the temperature sensor 300, the fixing frame 500 and the cable is achieved by the contact between the inner arc surface of the arc-shaped hoop and the outer surface of the cable, and the cooperation between the bracket and the fixing hole 311.

[0044] Preferably, the arc hoop and the cable can be interference fit, and the temperature sensor 300 can include a base plate 310 and a sensor body 320 arranged on the base plate 310, and the fixing holes 311 are opened on both sides of the base plate 310, and the bracket passes through the fixing holes 311 to enable the base plate 310 to engage with the limiting groove 521.

[0045] In some embodiments, reference Figure 2 and Figure 5 As shown, the metal cabinet 200 may include a cabinet body 230 having an identification groove 231 and a cabinet door 240 detachably connected to the cabinet body 230, and the cabinet door 240 is provided with a handle 241. The collector 120 is located outside the sealed cavity, the RF antenna 110 is arranged on the inner wall of the cabinet body 230, and the projection of the RF antenna 110 on the inner wall of the cabinet body 230 is located in the identification groove 231, that is, the RF antenna 110 is arranged in the identification groove 231.

[0046] The identification groove 231 provided in the embodiment of the present application can, on the one hand, fix the RF antenna 110, thereby improving the stability of the device when detecting the performance of the RF unit 100; on the other hand, when different RF antennas 110 to be tested are respectively placed in the same identification groove 231, it can ensure that each RF antenna 110 to be tested remains in the same detection position during detection, thereby facilitating the improvement of detection accuracy.

[0047] It can be understood that the embodiment of the present application has no limitation on the setting position and size of the identification groove 231. For example, the identification groove 231 can be set at a position close to the temperature sensor 300, and the size of the identification groove 231 can be adaptively adjusted according to the size of the RF antenna 110.

[0048] Preferably, the center lines of the RF antenna 110, the identification slot 231 and the temperature sensor 300 are collinear. This collinear arrangement can make the distance between the RF antenna 110 located in the identification slot 231 and the temperature sensor 300 the shortest, so that the RF antenna 110 can receive the RF signal sent by the temperature sensor 300 more quickly, thereby improving the sensitivity of the signal detection of the RF antenna 110. In addition, this arrangement can also reduce the detection error that may occur due to the distance between the temperature sensor 300 and the RF antenna 110 being too far to a certain extent, and further improve the accuracy of the device's detection of the performance of the RF unit 100.

[0049] Furthermore, the RF antenna 110 and the identification slot 231 can be connected by magnetic fixation. The RF antenna 110 is fixed to the identification slot 231 by magnetic means, which can facilitate technicians to quickly and accurately replace different parts to be tested when testing the performance of the RF unit 100, thereby improving the efficiency of the performance testing of the RF unit 100. In addition, in addition to magnetic fixation, the connection between the RF antenna 110 and the identification slot 231 can also be connected by bonding, or by snap-on, threaded connection, etc. The embodiment of the present application does not limit the connection method between the RF antenna 110 and the identification slot 231.

[0050] In addition, an embodiment of the present application also provides a method for testing the performance of a radio frequency unit 100, which is applied to a device for testing the performance of a radio frequency unit as described above, wherein the radio frequency unit 100 includes a connected radio frequency antenna 110 and a collector 120, wherein one of the radio frequency antenna 110 and the collector 120 is a device under test, and the other of the two is a standard part, and the device under test and the standard part cooperate to form the radio frequency unit 100 under test.

[0051] Specifically, refer to Figure 6 As shown, the method comprises the following steps:

[0052] S100: The control terminal receives temperature data collected by the radio frequency unit to be tested.

[0053] Among them, the temperature data is collected by the RF unit to be tested according to the preset sampling power and sampling interval of the RF signal fed back by the temperature sensor, and the sampling power can have multiple levels that increase from low to high. It should be noted that the sampling interval refers to the frequency at which the RF unit sends the RF signal. For example, the sampling interval can be set to 30S, that is, the RF unit will send a RF signal to the temperature sensor once every 30S. The sampling power of the RF unit refers to the transmission power of the RF unit. The size of the transmission power determines the strength and transmission distance of the RF signal. The greater the transmission power, the stronger the RF signal. For different RF units, when the sampling power and sampling interval remain the same, the performance of the RF unit is determined by judging whether the RF signal fed back by the temperature sensor is collected.

[0054] For example, the specific sampling process can refer to the following:

[0055] When the sampling power is set to 5 levels increasing from low to high, such as the first-level sampling power is 4dBm, the second-level sampling power is 8dBm, the third-level sampling power is 12dBm, the fourth-level sampling power is 16dBm, and the fifth-level sampling power is 20dBm, for the same RF unit to be tested, starting from the first-level sampling power, the temperature sensor is sampled once every 30S, and the sampling period at the same level of sampling power is the same or the number of samplings at the same level of sampling power is the same, until the collection of all levels of sampling power is completed, and then the sampling is stopped.

[0056] It should be noted that the multi-level sampling powers in the embodiments of the present application may have the same power difference or different power difference, that is, the difference between the sampling powers of each level may be the same or different, and the present application does not limit the specific value of the sampling power.

[0057] S200: Within a same preset sampling period, the control terminal calculates the collection frequency of temperature data at the same level of sampling power.

[0058] In the embodiment of the present application, the sampling period can be set to 5 minutes, for example, that is, when the sampling interval is set to 30 seconds, the sampling period is determined to be 5 minutes according to 10 samplings. Of course, the embodiment of the present application does not limit the numerical values ​​of the number of samplings and the sampling period, and it can also be 20 seconds as the sampling interval, and the sampling period corresponding to 30 samplings is 10 minutes, etc.

[0059] After completing the sampling according to the preset sampling power, sampling interval and sampling period, the control terminal calculates the acquisition frequency of the temperature data and determines the acquisition success rate of the temperature data. The sampling frequency or acquisition success rate is based on whether the control terminal can receive the temperature data. If the control terminal can receive the temperature data, it indicates that the sampling is successful; if the control terminal does not receive the temperature data, it indicates that the sampling has failed.

[0060] S300, when the acquisition frequency is less than the preset threshold, the control terminal calculates the acquisition frequency of the temperature data at the next level of sampling power, until the acquisition frequency of the temperature data at all sampling powers is less than the threshold, and the test piece is determined as a defective product.

[0061] S400: When the acquisition frequency is greater than or equal to a preset threshold, the test piece is determined to be a qualified product.

[0062] The thresholds in the above steps S300 and S400 may be, for example, 95%, 90%, etc., and the present application does not limit the size of the thresholds. During sampling, since the sampling power is collected in order from low to high, when the acquisition frequency calculated by the control terminal at the first-level sampling power is greater than or equal to the threshold, the RF unit to be tested can be determined as a qualified product. When the acquisition frequency calculated by the control terminal at the first-level sampling power is less than the threshold, the acquisition frequency at the second-level sampling power is calculated until the acquisition frequency at all sampling frequencies is less than the threshold, and then the unit to be tested is determined as a defective product.

[0063] For example, the performance detection of a radio frequency antenna is used as an example to illustrate:

[0064] When the acquisition frequency calculated by the control terminal under the first-level sampling power is greater than the threshold, since the sampling power is the smallest at this time, if the acquisition frequency is still greater than the threshold (95%), it indicates that the performance of the RF antenna to be tested is good and no subsequent detection is required.

[0065] When the acquisition frequency calculated by the control terminal at the primary sampling power is less than 95%, since the sampling power is the smallest at this time, the sampling power can be adjusted to the secondary sampling power, and then the acquisition frequency at the secondary sampling power can be recalculated. If the acquisition frequency at the secondary sampling power is greater than 95%, it indicates that the performance of the RF antenna to be tested is good and no subsequent testing is required. However, if the acquisition frequencies at the secondary sampling power, the tertiary sampling power, the quaternary sampling power, and the quintuple sampling power are all less than 95%, it indicates that there is a problem with the RF antenna to be tested and it is a defective product.

[0066] In addition, after completing the inspection of the device to be tested, for example, after completing the inspection of the RF antenna to be tested, the RF antenna to be tested in the metal cabinet can be removed, and then a new RF antenna to be tested can be replaced, and the new RF antenna to be tested can be re-tested according to the above process until the inspection of all RF antennas to be tested is completed.

[0067] Similarly, the detection of the collector to be tested is the same as the above content and will not be repeated here.

[0068] The method for testing the performance of the RF unit provided in the embodiment of the present application realizes the detection of the performance of the RF unit by calculating the temperature data acquisition frequency. The detection method is simple and easy to implement, which meets the actual needs of large-scale detection in factories, and the detection efficiency and detection accuracy can be well guaranteed.

[0069] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0070] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A device for testing the performance of a radio frequency unit, wherein the radio frequency unit comprises a radio frequency antenna and a collector connected to each other, wherein the radio frequency antenna is used to transmit radio frequency signals, and the collector is used to read the radio frequency signals fed back to the radio frequency antenna and parse them into temperature data, characterized in that: One of the radio frequency antenna and the collector is a device under test, and the other is a standard device; and the device under test and the standard device cooperate to form a radio frequency unit under test; The device comprises: A metal cabinet having a sealed cavity for accommodating a cable connector; A temperature sensor is arranged at the cable connector, and is used to receive the radio frequency signal sent by the radio frequency antenna, and feed back the radio frequency signal carrying temperature information to the radio frequency antenna; A control terminal connected to the collector, configured to receive the temperature data and determine the performance of the device under test according to the frequency of the temperature data received within at least one sampling period; The control terminal receives temperature data collected by the radio frequency unit to be tested, wherein the temperature data is collected by the radio frequency unit to be tested according to a preset sampling power and sampling interval on the radio frequency signal fed back by the temperature measurement sensor, and the sampling power has multiple levels that increase sequentially from low to high; In the same preset sampling period, the control terminal calculates the collection frequency of the temperature data at the same level of sampling power; When the acquisition frequency is less than a preset threshold, the control terminal calculates the acquisition frequency of the temperature data at the next level of the sampling power until the acquisition frequency of the temperature data at all the sampling powers is less than the threshold, and the test piece is determined as a defective product.

2. The device for testing the performance of a radio frequency unit according to claim 1, characterized in that: The cable connector is used to connect the cable. The device also includes a fixing frame arranged in the sealed cavity. The fixing frame includes a clamping portion and a snap-fit ​​portion connected to each other. The clamping portion cooperates with the cable in the sealed cavity, and the snap-fit ​​portion cooperates with the temperature sensor, so that the temperature sensor can detect the temperature of the cable connector.

3. The device for testing the performance of a radio frequency unit according to claim 2, characterized in that: The clamping portion is an arc-shaped hoop, the engaging portion is a bracket with a limiting groove, the temperature sensor is provided with a fixing hole, and the connection among the temperature sensor, the fixing frame and the cable is achieved by the contact between the inner arc surface of the arc-shaped hoop and the outer surface of the cable, and the cooperation between the bracket and the fixing hole.

4. The device for testing the performance of a radio frequency unit according to claim 3, characterized in that: The arc-shaped hoop and the cable have an interference fit; The temperature measuring sensor comprises a bottom plate and a sensor body arranged on the bottom plate. The fixing holes are opened on both sides of the bottom plate. The bracket passes through the fixing holes so that the bottom plate is engaged with the limiting groove.

5. A device for testing the performance of a radio frequency unit according to any one of claims 1 to 4, characterized in that: The metal cabinet includes a cabinet body with an identification groove and a cabinet door detachably connected to the cabinet body, the collector is located outside the sealed cavity, the radio frequency antenna is arranged on the inner wall of the cabinet body, and the projection of the radio frequency antenna on the inner wall of the cabinet body is located in the identification groove.

6. The device for testing the performance of a radio frequency unit according to claim 5, characterized in that: The center lines of the radio frequency antenna, the identification groove and the temperature sensor are collinear.

7. The device for testing the performance of a radio frequency unit according to claim 6, characterized in that: The radio frequency antenna is fixed to the identification slot by magnetic attraction.

8. The device for testing the performance of a radio frequency unit according to claim 5, characterized in that: The metal cabinet is made of aluminum-zinc steel plate.

9. A method for testing the performance of a radio frequency unit, the method being applied to a device for testing the performance of a radio frequency unit as claimed in any one of claims 1 to 8, the radio frequency unit comprising a radio frequency antenna and a collector connected to each other, one of the radio frequency antenna and the collector being a device under test, the other being a standard part, and the device under test and the standard part cooperating to form a radio frequency unit under test, characterized in that: The method comprises the following steps: The control terminal receives the temperature data collected by the radio frequency unit to be tested, wherein the temperature data is collected by the radio frequency unit to be tested according to a preset sampling power and sampling interval on the radio frequency signal fed back by the temperature measurement sensor, and the sampling power has multiple levels that increase sequentially from low to high; In the same preset sampling period, the control terminal calculates the collection frequency of the temperature data at the same level of sampling power; When the acquisition frequency is less than a preset threshold, the control terminal calculates the acquisition frequency of the temperature data at the next level of the sampling power until the acquisition frequency of the temperature data at all the sampling powers is less than the threshold, and the test piece is determined as a defective product.

10. A method for testing the performance of a radio frequency unit according to claim 9, characterized in that: After the control terminal calculates the acquisition frequency of the temperature data at the same level of the sampling power within the same preset sampling period, the method further includes: When the acquisition frequency is greater than or equal to a preset threshold, the test piece is determined to be a qualified product.

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