Cable sensor based antenna leakage evaluation and protection method

Abstract

The application provides an antenna leakage evaluation method based on a cable sensor and a protection method thereof. The sensing information of the cable type leakage sensor is used to evaluate four states of no leakage, leakage state 1, leakage state 2 and leakage state 3 in the antenna. For the leakage state 2 and the leakage state 3, the protective measures of automatically cutting off the cooling liquid supply, sending a signal to turn off the main power supply of the antenna, opening a liquid discharge valve to discharge the liquid and preventing the leakage cooling liquid from accumulating to submerge the functional circuit of the antenna and causing damage are taken. The application considers various leakage situations of the cooling liquid in the antenna. For the leakage state 1, the possible risk module is positioned according to the sensing information evaluation, and a maintenance suggestion is given. For the leakage state 2 and the leakage state 3, timely liquid cutting, power cutting and liquid discharging measures are taken. The application effectively reduces the maintenance work intensity of the staff, improves the maintenance work efficiency, reduces the risk of antenna damage caused by liquid cooling leakage, and improves the safety and reliability of the liquid cooling antenna array work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic information equipment health management. BACKGROUND

[0002] With the development of semiconductor technology, the power density of microelectronic circuits is becoming higher and higher. In order to meet the requirements of high performance and high power of active array antenna, integrated design is often used, and the structure size is becoming smaller and smaller, and the power density is becoming higher and higher. In order to ensure the stable and reliable work of active antenna array, forced cooling of antenna often adopts liquid cooling method (CN202210706015.4). There are complex circuits and liquid paths inside the active antenna array, which often adopts sealed design. Once the pipeline liquid leakage occurs and the leakage cannot be found and disposed in time, the leakage will cause the pollution or corrosion of the optical and electrical interfaces, cables, circuits and other components inside the antenna. This will affect the normal play of its original function, and even damage, leading to the performance degradation or failure of the antenna. The existing patents (CN202011046483.0, CN202210619743.1, CN201910155395.5, etc.) can detect and alarm the leakage, but cannot distinguish the state of small amount, continuous or large amount of leakage, and also do not provide more detailed corresponding disposal methods or measures to ensure the safe use of active antenna array. SUMMARY

[0003] To solve the above problems, the present application provides an antenna leakage evaluation and protection method based on cable sensor. Without opening the sealed shell of the antenna array, the sensing information of the cable type leakage sensor is used to evaluate four states of no leakage, leakage state 1, leakage state 2 and leakage state 3 in the antenna, and automatically take protective measures such as cutting off the cooling liquid supply, sending a signal to close the main power supply of the antenna, opening the liquid discharge valve to discharge the liquid, preventing the accumulation of leaked cooling liquid from submerging the functional circuit of the antenna and causing damage. The use risk of liquid-cooled antenna array is effectively reduced, the maintenance time and cost are reduced, and the safety and reliability of the antenna array work are improved.

[0004] To achieve the above purpose, the present application provides an antenna leakage evaluation and protection method based on cable sensor, which is realized by the following scheme:

[0005] The antenna structure is divided into an antenna front cabin and an antenna rear cabin, which are closed environments, wherein the antenna rear cabin comprises a skeleton shell, a frame plug-in box, a liquid cooling pipeline, a comprehensive cable, a power supply module, a transceiver module, a beam synthesis and control module, and a cooling monitoring unit; the frame plug-in box is arranged in the skeleton shell; the power supply module, the transceiver module, and the beam synthesis and control module are in a plug-in box structure and are connected with the comprehensive cable connector and the water connector through the guide insertion slot of the bottom plate of the frame plug-in box to realize blind insertion and connection; the antenna power supply is divided into two independent parts: one is a main power supply provided by the power supply module to supply power to each module except the cooling monitoring unit, and the other is a backup power supply to supply power to the cooling monitoring unit; the liquid cooling pipeline provides cooling medium for the antenna array and is connected with external pipelines through liquid inlet and liquid return pipeline interfaces; the blind insertion water connector is connected with the liquid return pipeline and the liquid inlet pipeline through a hose; the cooling monitoring unit comprises a control protection module, a cable liquid leakage sensor, a main control electromagnetic valve, a liquid discharge electromagnetic valve, a pressure relief electromagnetic valve, and a dehumidification device; the control protection module of the cooling monitoring unit realizes liquid leakage state monitoring through the liquid leakage sensor and automatically takes protective measures; a liquid collection guide groove is arranged at the bottom of the antenna rear cabin to collect the cooling liquid through gravity when leakage occurs; the bottom of the guide groove is connected with a liquid discharge pipeline, the liquid discharge pipeline is directly connected with a liquid discharge port, and a liquid leakage sensor cable is arranged at the bottom of the guide groove; the liquid leakage monitoring design method is realized according to the following steps:

[0006] Step 1: The antenna cooling monitoring unit power is powered on, the dehumidification device is working, and the external environmental control equipment provides cooling liquid for the antenna;

[0007] Step 2: The main part of the antenna equipment is powered on and works normally;

[0008] Step 3: The control protection module of the cooling monitoring unit obtains the monitoring information of the liquid leakage sensor and the dehumidification device through the bus at regular intervals;

[0009] Step 4: The control protection module of the cooling monitoring unit evaluates the current four liquid leakage states in the antenna according to the obtained liquid leakage monitoring information: no leakage, leakage state 1, leakage state 2, and leakage state 3, and sends them to the equipment BIT unit at regular intervals;

[0010] Step 5: In the case of no leakage, the control protection module of the cooling monitoring unit provides the antenna main power supply permission for the equipment; in the case of leakage state 1, the control protection module of the cooling monitoring unit gives the liquid leakage positioning information and provides the antenna main power supply permission for the equipment, and the on-site staff determines whether immediate maintenance work is needed at present; in the case of leakage state 2 and leakage state 3, go to step 8;

[0011] Step 6: When the antenna main power supply permission is obtained and other conditions for the antenna main power supply are met, the equipment allows the antenna main power supply to be powered on;

[0012] Step 7: After receiving the permission of the whole device to the antenna main power supply, the antenna main power supply is powered on in the case of not being powered on, and the power supply is continued in the case of being powered on, the antenna works normally, and the process is repeated until the cooling monitoring unit power supply is turned off;

[0013] Step 8: The control protection module initiates emergency measures, and the on-site staff initiates the maintenance work procedure, and after the maintenance is completed, the cooling monitoring unit power supply is reset or turned off, and the process is turned to step 1 as needed.

[0014] Preferably, the leakage state 1, the leakage state 2 and the leakage state 3 refer to that a detection period T is set by the cooling monitoring unit control protection module, a leakage distance change threshold Y1, a large amount of continuous leakage distance change threshold Y2, and a minimum leakage distance Y3, and the judgment is carried out according to the following conditions: the detection period T refers to timing from any liquid leakage event, and the timing is stopped at time T; in the case that the leakage positioning distance continuously decreases or the distance change value of the leakage positioning distance continuously decreases is less than Y1 within the detection period T, the leakage state 1 is determined; in the case that the leakage positioning distance continuously decreases and the distance change value of the leakage positioning distance continuously decreases is greater than or equal to Y1 and less than Y2 within the detection period T, the leakage state 2 is determined; in the case that the leakage positioning distance continuously decreases and the distance change value of the leakage positioning distance continuously decreases is greater than or equal to Y2, or the leakage positioning distance is less than or equal to Y3 within the detection period T, the leakage state 3 is determined.

[0015] Preferably, the emergency measures refer to that when the cooling monitoring unit control protection module detects the leakage state 2 or the leakage state 3, the control protection module sends a signal to prohibit the power supply of the active antenna array main power supply, a control signal to close the main control electromagnetic valve of the liquid inlet and return pipeline, and a control signal to open the liquid discharge electromagnetic valve, and after the whole device BIT unit receives the signal, the active antenna array main power supply is prohibited to be powered on in the case of not being powered on, and is powered off in the case of being powered on, so as to prevent the external cooling liquid from entering the antenna array, and the leaked cooling liquid is discharged through the liquid discharge pipeline.

[0016] Preferably, the main control electromagnetic valve selects the de-energized normally open and the energized closed as the basic state, the liquid discharge electromagnetic valve selects the energized normally open and the de-energized closed as the basic state, and the pressure relief electromagnetic valve selects the energized normally open and the de-energized closed as the basic state.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. Four liquid leakage states in the antenna are evaluated, and corresponding automatic measures are realized, manual intervention is reduced, and the safety of the liquid-cooled antenna array is effectively improved.

[0019] 2, In the case of leakage state 2 and leakage state 3, the protective measures of automatically cutting off the cooling liquid supply, closing the antenna main power supply, and opening the liquid discharge valve to discharge the leaked cooling liquid can effectively prevent the accumulation of leaked cooling liquid from submerging the functional circuits in the antenna, reduce the risk of antenna damage caused by liquid cooling leakage, and improve the working reliability and safety of the liquid-cooled antenna array. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Embodiment liquid-cooled antenna array rear view;

[0021] Figure 2 Embodiment liquid-cooled antenna array rear view after removing the door;

[0022] Figure 3 Embodiment liquid-cooled antenna array side view;

[0023] Figure 4 Leakage monitoring method implementation step flow chart.

[0024] ATTACHMENT Figure 1 , 2 , 3 The meanings of each character are as follows:

[0025] A: Antenna front cabin, B: Antenna rear cabin, 1: Liquid cooling pipeline, 1.1: Liquid inlet, 1.2: Liquid return port, 1.3: Liquid discharge port, 2: Skeleton shell, 3: Frame plug-in box, 4: Beam synthesis and control module, 5: Transceiver module, 6: Power supply module, 7: Cooling monitoring unit, 7.1: Control protection module, 7.2: Main control electromagnetic valve, 7.3: Pressure relief electromagnetic valve, 7.4: Liquid discharge electromagnetic valve, 7.5: Dehumidification device, 7.6: Cable leakage sensor, 8: Antenna door, 9: Liquid collection and flow guide V-shaped groove. DETAILED DESCRIPTION

[0026] Embodiment

[0027] In this example, the liquid-cooled antenna array is composed of Figure 1 , Figure 2 , Figure 3As shown: the liquid-cooled antenna array structure is divided into antenna front cabin A and antenna rear cabin B, wherein the antenna front cabin A contains antenna units, antenna cover, the antenna rear cabin B contains framework shell 2, frame plug-in box 3, antenna door 8, liquid cooling pipeline 1, comprehensive cable, power supply module 6, transceiver module 5, beam synthesis and control module 4, cooling monitoring unit 7, the front cabin is connected with the rear cabin framework through bolts, the framework shell 2 provides structural support for the whole antenna array, the frame plug-in box 3 is designed as a weight-reducing hollow structure and is placed in the framework shell 2, the comprehensive cable is installed inside the framework shell 2 and is used to transmit light, current, radio frequency and control signals. The power supply module 6, the transceiver module 5 and the beam synthesis and control module 4 are designed in the form of plug-in box structure, and each contains a cooling pipeline, and female blind plug water connectors are installed at the back ends, and the blind plug butt joint is realized through the guide slot on the bottom plate of the frame plug-in box 3, the comprehensive cable connector and the water connector, and the transceiver module 5 is connected with a column of antenna units from left to right in turn. The power supply of the antenna is divided into two independent parts, one is the main power supply of the active antenna array, which is provided by the power supply module 6 through the three copper strips at the bottom of the antenna rear cabin B to provide shielded direct current power supply for each module except the cooling monitoring unit 7; one is a sub-power supply for the cooling monitoring unit 7. The liquid cooling pipeline 1 provides cooling medium for the antenna array to ensure that it is in a suitable temperature range. The liquid cooling pipeline 1 is connected with the external pipeline through the liquid inlet and liquid return pipeline interfaces, and the structure is divided into upper and lower two sections, the upper section is the liquid return pipeline, and the lower section is the liquid inlet pipeline. The blind plug water connector is connected with the liquid return pipeline and the liquid inlet pipeline through a hose respectively, and the male head of the blind plug water connector and the male head of the blind plug comprehensive cable connector are fixed in the frame plug-in box 3. The cooling monitoring unit 7 contains control protection module 7.1, liquid leakage sensor, main control electromagnetic valve 7.2 (normally open at power off, closed at power on), liquid discharge electromagnetic valve 7.4 (normally open at power on, closed at power off), pressure relief electromagnetic valve 7.3 (normally open at power on, closed at power off) and dehumidification device 7.5. The dehumidification device 7.5 of the cooling monitoring unit 7 provides dry air for the antenna array to prevent condensation in the interior, and is installed in the framework shell 2. Figure 1The left side of the antenna door 8 is inside. The cooling monitoring unit 7 controls the protection module 7.1 to realize the leakage state monitoring through the liquid leakage sensor, and automatically takes protective measures. The bottom of the antenna rear cabin B is provided with a liquid collection guide groove, which collects the cooling liquid by gravity when leaking. The bottom of the guide groove is connected with the liquid discharge pipeline, and the liquid discharge pipeline is directly connected with the liquid discharge port 1.3. The antenna door 8 provides a sealed environment for the entire antenna array. The antenna array is connected with the external light, current, radio frequency and control signal interface, the liquid inlet and liquid return pipeline interface and the liquid discharge port 1.3 are located below the antenna door 8 at the bottom of the rear side of the array. The antenna array realizes the emission and reception of the specified angle beam under the control of the external time sequence and information; the cross section of the liquid collection guide groove in the normal direction of the antenna is V-shaped, the V-shaped opening vertical line covers the frame insertion box 3 and the liquid cooling pipeline 1, and a layer of liquid absorption fabric is covered on the surface. A liquid leakage sensor cable is placed on the V-shaped bottom fabric of the liquid collection guide groove. The liquid collection guide groove and the liquid absorption fabric have the function of collecting a small amount of liquid leakage at the same time to prevent the liquid leakage from flowing. The power supply module 6, the transceiver module 5, the beam synthesis and control module 4 in the active antenna array are all designed with metal shell and sealing, and the surface is coated with three-proof paint. Except the liquid leakage sensor line and the liquid discharge electromagnetic valve 7.4 control cable, other light, current, radio frequency and control signal cables in the array are suspended and arranged higher than the top of the liquid collection guide groove. The liquid cooling pipeline 1 is connected from the side of the array, the right side upper end is the water outlet, the left side lower end is the water inlet, the main control electromagnetic valve 7.2 is installed near the bulkhead, a pressure relief electromagnetic valve 7.3 is installed on the water inlet pipeline in the cabin direction, and the cooling liquid pressure in the pipeline is released before the liquid cooling module is repaired and replaced to prevent the cooling liquid from splashing. The liquid discharge electromagnetic valve 7.4 is connected with the liquid collection guide groove on the liquid discharge pipeline, and the liquid discharge port 1.3 at the end of the liquid discharge pipeline is located below the bottom of the right side of the antenna. The cooling monitoring unit 7 is separately powered by the external 220V / 50Hz power supply, the protection module 7.1 generates 24V to provide for the liquid leakage sensor and the electromagnetic control valve, the dehumidification device 7.5 is provided with 220V / 50Hz power supply by the protection module 7.1, the protection module 7.1 is connected with the liquid leakage sensor main controller and the dehumidification device 7.5 through the communication bus, and the liquid leakage and temperature and humidity monitoring information are inquired regularly. The protection module 7.1 of the cooling monitoring unit 7 communicates the fault state information with the BIT fault detection unit of the whole equipment through the Ethernet (optical) interface.

[0028] The liquid leakage monitoring method is realized according to the following steps, as shown in Figure 4

[0029] 1) The active antenna array cooling monitoring unit 7 power supply is powered on, the dehumidification device 7.5 works, and the external environmental control equipment provides cooling liquid for the antenna array;

[0030] 2) The main part of the antenna equipment is powered on and works normally;

[0031] ​3) The cooling monitoring unit 7 controls the module 7.1 to obtain the leakage sensor monitoring information (leakage distance) and the monitoring information of the dehumidifying device 7.5 at a frequency of 10 times per second through the 485 bus 10;

[0032] 4) The cooling monitoring unit 7 controls the module 7.1 to give four kinds of leakage states in the current array according to the obtained leakage monitoring information: no leakage, leakage state 1, leakage state 2, and leakage state 3, and to send them to the device BIT unit at a fixed time;

[0033] 5) In the case of no leakage, the cooling monitoring unit 7 controls the module 7.1 to provide the active antenna array main power with a power-on permission; in the case of leakage state 1, the cooling monitoring unit 7 controls the module 7.1 to give leakage positioning information and provide the active antenna array main power with a power-on permission, and to determine whether immediate maintenance work is needed at present by the on-site staff; in the case of leakage state 2 and leakage state 3, go to step 8);

[0034] 6) The device gives the active antenna array main power a power-on permission when the active antenna array main power is permitted to be powered on and other conditions for the active antenna array main power to be powered on are met at the same time;

[0035] 7) After receiving the permission of the device to power on the active antenna array main power, the active antenna array main power is powered on when it is not powered on, and continues to be powered on when it is already powered on, the active antenna array works normally, and goes to step 3) to circulate until the cooling monitoring unit 7 power is turned off;

[0036] 8) The control module 7.1 initiates emergency measures: the control module 7.1 sends a signal to prohibit the active antenna array main power to be powered on, sends a signal to close the main control electromagnetic valve 7.2 of the liquid inlet and return pipeline, and sends a signal to open the drainage electromagnetic valve 7.4, after the device BIT unit receives the signal, the active antenna array main power is prohibited to be powered on when it is not powered on, and is protected by power-off when it is already powered on, preventing external cooling liquid from entering the antenna array, the leaked cooling liquid is concentrated by the liquid collection guide groove, and the excess leaked cooling liquid is discharged through the drainage pipeline. The on-site staff initiates the maintenance work program, after the maintenance is completed, the cooling monitoring unit 7 power is turned off, and goes to step 1) as needed.

[0037] The cooling monitoring unit 7 controls the monitoring module 7.1 to give four liquid leakage states of a leakage state 1, a leakage state 2, a leakage state 3 and a leakage state 4 according to the liquid leakage sensing information. In the monitoring module 7.1, a programmable device (CPU or FPGA) program is set with a detection period T, a distance change threshold Y1 of the leakage state 2, a distance change threshold Y2 of a large continuous leakage, a minimum distance Y3 of a leakage point, and a judgment is made according to the following conditions: the detection period T refers to timing from any liquid leakage event, and the timing is stopped at time T; if the leakage positioning distance does not continuously decrease or the distance change value of the continuously decreasing leakage positioning distance is less than Y1 within the detection period T, the leakage state 1 is determined; if the leakage positioning distance continuously decreases and the distance change value of the continuously decreasing leakage positioning distance is greater than or equal to Y1 and less than Y2 within the detection period T, the leakage state 2 is determined; if the leakage positioning distance continuously decreases and the distance change value of the continuously decreasing leakage positioning distance is greater than or equal to Y2, or the leakage positioning distance is less than or equal to Y3 within the detection period T, the leakage state 3 is determined.

[0038] The above examples only illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. Any modification made according to the technical idea of the present application on the basis of the technical scheme falls within the protection scope of the present application.

Claims

1. A cable sensor based antenna liquid leakage assessment and protection method, characterized in that: The antenna is divided into an antenna front cabin and an antenna rear cabin, which are closed environments, wherein the antenna rear cabin comprises a skeleton shell, a frame plug-in box, a liquid cooling pipeline, a comprehensive cable, a power supply module, a transceiver module, a beam synthesis and control module, and a cooling monitoring unit; the frame plug-in box is arranged in the skeleton shell; the power supply module, the transceiver module, and the beam synthesis and control module are in the form of plug-in boxes, and are connected to the comprehensive cable connector and the water connector through the guide slots in the bottom plate of the frame plug-in box to realize blind insertion and connection; the antenna power supply comprises two independent parts: one is a main power supply provided by the power supply module to supply power to each module except the cooling monitoring unit, and the other is a backup power supply to supply power to the cooling monitoring unit; the liquid cooling pipeline provides cooling medium for the antenna array, is connected to an external pipeline through liquid inlet and liquid return pipeline interfaces, and is connected to the liquid return pipeline and the liquid inlet pipeline through a blind insertion water connector through a hose; the cooling monitoring unit comprises a control protection module, a cable liquid leakage sensor, a main control electromagnetic valve, a liquid discharge electromagnetic valve, a pressure relief electromagnetic valve, and a dehumidification device; the control protection module of the cooling monitoring unit realizes liquid leakage state monitoring through the cable liquid leakage sensor and automatically takes protective measures; a liquid collection and flow guide groove is arranged at the bottom of the antenna rear cabin to collect the cooling liquid through gravity when leakage occurs; the bottom of the flow guide groove is connected to a liquid discharge pipeline, the liquid discharge pipeline is directly connected to a liquid discharge port, and the bottom of the flow guide groove is arranged with a cable of the cable liquid leakage sensor; the antenna liquid leakage evaluation and liquid leakage protection method is realized according to the following steps: Step 1: the antenna cooling monitoring unit power is powered on, the dehumidification device is working, and the external environmental control equipment provides cooling liquid for the antenna; Step 2: the main part of the antenna is powered on and works normally; Step 3: the control protection module of the cooling monitoring unit obtains the monitoring information of the cable liquid leakage sensor and the dehumidification device through the bus at regular intervals; Step 4: the control protection module of the cooling monitoring unit evaluates four liquid leakage states in the antenna according to the obtained liquid leakage monitoring information: no leakage, leakage state 1, leakage state 2, and leakage state 3, and sends them to the device BIT unit at regular intervals; Step 5: in the case of no leakage, the control protection module of the cooling monitoring unit provides the device with a permission to power on the antenna main power supply; in the case of leakage state 1, the control protection module of the cooling monitoring unit provides leakage positioning information and a permission to power on the antenna main power supply, and whether immediate maintenance work is needed is determined by the on-site staff; in the case of leakage state 2 and leakage state 3, go to step 8; Step 6: the device allows the antenna main power supply to be powered on when the permission to power on the antenna main power supply is obtained and other conditions for powering on the antenna main power supply are met; Step 7: after receiving the permission to power on the antenna main power supply from the device, the antenna main power supply is powered on in the case of no power on, and continues to supply power in the case of power on, the antenna works normally, and goes to step 3 to be repeated until the cooling monitoring unit power is turned off; Step 8: the control protection module initiates emergency measures, the on-site staff initiates a maintenance work program after maintenance is completed, the cooling monitoring unit power is reset or turned off, and goes to step 1 as needed. ​ 2. The cable sensor based antenna liquid leakage evaluation and protection method according to claim 1, wherein: The leakage state 1, leakage state 2, leakage state 3 state refers to setting a test period T by a programmable component in the cooling monitoring unit control protection module, the leakage state 2 distance change threshold Y1, a large number of continuous leakage distance change threshold Y2, the minimum distance Y3 of the leakage point, and the determination is carried out according to the following conditions: the test period T refers to timing from any time leakage event, timing to time T cutoff; In the time of test period T, there is no leakage positioning distance continuous reduction or leakage positioning distance continuous reduction distance change value less than Y1, then it is determined that the leakage state 1 state; In the time of test period T, the leakage positioning distance continuously reduces and the distance change value of the continuous reduction is greater than or equal to Y1 and less than Y2, then it is determined that the leakage state 2 state; In the time of test period T, the leakage positioning distance continuously reduces and the distance change value of the continuous reduction is greater than or equal to Y2, or the leakage positioning distance is less than or equal to Y3, then it is determined that the leakage state 3 state.

3. The cable sensor based antenna liquid leakage evaluation and protection method of claim 1, wherein: The emergency treatment measures in step 8 include: the cooling monitoring unit control protection module detects the leakage state 2 or the leakage state 3 state, the control protection module sends the active antenna array main power supply can be powered on permission prohibition signal, the control signal of closing the liquid inlet and return pipeline main control electromagnetic valve, the control signal of opening the drainage electromagnetic valve, the device whole machine BIT unit receives the signal, the antenna main power supply is not powered on, the power supply is prohibited, the power supply is protected, the external cooling liquid is prevented from entering the antenna, the leaked cooling liquid is concentrated by the liquid collecting guide groove, and the leaked cooling liquid is discharged through the drainage pipeline.

4. The cable sensor based antenna liquid leakage evaluation and protection method of claim 1, wherein: The main control electromagnetic valve selects the de-energized always-on and the energized off as the basic state, the drainage electromagnetic valve selects the energized always-on and the de-energized off as the basic state, and the pressure relief electromagnetic valve selects the energized always-on and the de-energized off as the basic state.

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