A method for detecting water ingress into cable joints

Abstract

A method for detecting water ingress into a cable joint belongs to the technical field of humidity sensors and includes the following steps: S1, zeroing; S2, connecting the cable to a water ingress tester; S3, if the pointer of the microampere-level ammeter of the water ingress tester deflects, the cable has water ingress; S4, if the pointer of the microampere-level ammeter of the water ingress tester does not deflect, press the button of the charger, release the button and observe the pointer returning to the correct position; S5, determine whether the cable has water ingress by judging whether the pointer returns to the correct position at a uniform speed. The water ingress test of antenna feed lines requires a large number of wires to be tested, and the usual shaking test is time-consuming and labor-intensive, and the tester that directly measures the current is prone to damage the wires. The present invention can perform water ingress tests on a large number of antenna feed lines, ensuring the detection speed and accuracy, and also avoiding damage to the wires, thereby ensuring the normal operation of the antenna feed lines.

Description

Technical Field

[0001] The invention belongs to the technical field of humidity sensors, and in particular relates to a method for detecting water ingress into a cable joint. Background Art

[0002] Electronic equipment exposed to the marine environment may be intruded by water vapor caused by waves, precipitation, and the temperature difference between day and night, which may cause water ingress to cables and connectors and reduce insulation, seriously affecting the normal operation of the equipment. Traditional insulation testing requires applying DC high voltage between the independent cores of the cable and between the cores and the device housing, and judging the insulation performance by measuring the leakage current. In addition to detecting insulation degradation caused by water ingress, this detection method also tests the dielectric strength of the insulating material.

[0003] Water ingress testers are widely used in all walks of life. Determining whether water has entered the antenna feeder is very important for judging the stable operation of the equipment and maintaining and repairing the equipment. This requires the use of a water ingress detector to detect water ingress on devices that are often in humid environments.

[0004] The water ingress test of antenna feeder lines usually requires a large number of wires to be tested, and the on-site test is mainly based on shaking test, which is time-consuming and laborious. After the core wire of the electronic equipment is connected to the sensitive circuit, the insulation measurement cannot be performed by adding DC high voltage, which may cause the equipment to burn out. If a traditional insulation resistance tester is used to test the connection cable of the electronic equipment for water ingress, the equipment needs to be disassembled and all sensitive circuits disconnected. This will bring a lot of workload and may cause hidden faults such as poor contact, connection errors, and electrostatic discharge. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes: a method for detecting water ingress into a cable joint, comprising the following steps:

[0006] S1, zero adjustment;

[0007] S2, the cable is connected to the water inlet tester;

[0008] S3. If the pointer of the microampere ammeter of the water inlet tester moves, water has entered the cable;

[0009] S4. The pointer of the microampere ammeter of the water inlet tester does not deviate. Press the button of the charger, release the button and observe whether the pointer returns to normal.

[0010] S5. Determine whether the cable has been flooded by judging whether the pointer returns to normal at a uniform speed.

[0011] Furthermore, in step S1, the microampere level ammeter is zeroed using a zeroing knob.

[0012] Furthermore, in step S2, the cable is connected to the antenna feeder water ingress tester through an n-type interface.

[0013] Furthermore, in step S3, two metals with different potentials are placed in an electrolyte to generate current, causing the pointer of the microampere ammeter to deviate significantly, indicating that water has entered the cable.

[0014] Furthermore, in step S4, when the electrolyte concentration is too low and the generated current is too small to deflect the microampere ammeter, press the button of the push-button charger for three seconds to charge, causing the microampere ammeter pointer to deflect, and then release the button to observe whether the pointer returns to normal.

[0015] Furthermore, in step S5, the pointer returns to the correct position at different speeds when the original battery and the capacitor are discharged. When the pointer returns to the correct position evenly, it is the capacitor discharge characteristic, and there is no electrolyte, that is, the cable has not been flooded. Conversely, when the pointer returns to the correct position speed curve changes, it is the battery discharge characteristic, and there is electrolyte, that is, the cable has been flooded.

[0016] The beneficial effects of the present invention are as follows: the water ingress test of the antenna feeder line requires the detection of a large number of wires, and the conventional shaking test is time-consuming and labor-intensive, and the tester that directly measures the current is prone to damage the wires. The present device can perform a water ingress test on the antenna feeder line. Compared with the prior art, the detection method of the present invention not only does not cause damage to the wires, but also ensures the efficiency of the water ingress test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flow chart of a method for detecting water ingress into a cable joint according to the present invention;

[0018] Figure 2 It is a front schematic diagram of the overall structure of the antenna feeder water ingress tester disclosed in the present invention;

[0019] Figure 3 It is a schematic diagram of the back side of the overall structure of the antenna feeder water ingress tester disclosed in the present invention;

[0020] Figure 4 The present invention discloses an internal structure diagram of an antenna feeder line water ingress tester.

[0021] In the figure: 1-test instrument housing; 2-button charger; 3-microampere ammeter; 4-zero adjustment knob; 5-n-type connector; 6-battery. DETAILED DESCRIPTION

[0022] Example 1

[0023] In order to make the technical means and objectives of the present invention easy to understand, the present invention is further described below in combination with specific implementation methods. A method for detecting water ingress problems in cable joints, such as Figure 1 As shown, the following steps are included:

[0024] S1, zero adjustment;

[0025] S2, the cable is connected to the water inlet tester;

[0026] S3, if the pointer of the microampere level ammeter 3 of the water inlet tester moves, the cable is flooded;

[0027] S4, the pointer of the microampere ammeter 3 of the water inlet tester does not deviate, press the button of the charger 2, release the button and observe the pointer returning to the normal position;

[0028] S5. Determine whether the cable has been flooded by judging whether the pointer returns to normal at a uniform speed.

[0029] Wherein, in the step S1, the microampere level ammeter 2 is zeroed using the zeroing knob 4.

[0030] Wherein, in the step S2, the cable is connected to the antenna feeder water ingress tester through the n-type interface 5.

[0031] Among them, in the step S3, two metals with different potentials are placed in the electrolyte to generate current, which causes the pointer of the microampere ammeter 3 to deviate significantly, indicating that water has entered the cable.

[0032] Among them, in step S4, when the electrolyte concentration is too low and the generated current is too small to cause the microampere ammeter 3 to deflect, press the button of the button charger 2 for three seconds to charge, causing the pointer of the microampere ammeter 2 to deflect, and then release the button to observe whether the pointer returns to normal.

[0033] Among them, in the step S5, the pointer returns to the correct position at different speeds when the original battery and the capacitor are discharged. When the pointer returns to the correct position evenly, it is the capacitor discharge characteristic, then there is no electrolyte, that is, the cable has not been flooded. On the contrary, when the pointer returns to the correct position speed curve changes, it is the battery discharge characteristic, then there is electrolyte, that is, the cable has been flooded.

[0034] The working principle of the present invention is: firstly use the zeroing knob 4 to zero the microampere level ammeter 2, and then connect the antenna feed line to the antenna feed line water ingress tester through the n-type interface 5. Since two metals with different potentials placed in an electrolyte will certainly generate current, when the pointer of the microampere level ammeter 3 is significantly deflected, it proves that the antenna feed line has water ingress. When the electrolyte concentration is too low and the generated current is too small to cause the microampere level ammeter 3 to deflect, press the button of the button charger 2 for three seconds to charge, so that the pointer of the microampere level ammeter 2 is deflected, and then release it to observe the pointer returning to the right position. Since the pointer returns to the right position at different speeds when the original battery and the capacitor are discharged, when it returns to the right position evenly, it is the capacitor discharge characteristic, which proves that there is no electrolyte, that is, the antenna feed line has no water ingress. On the contrary, when the pointer returns to the right position speed curve changes, it is the battery discharge characteristic, which proves that there is electrolyte, that is, the antenna feed line has water ingress.

[0035] Table 1 is a relay matrix table, which shows the water ingress situation between measuring core 1 and core 6.

[0036]

[0037]

[0038] Example 2

[0039] The purpose of the present invention is to provide a water ingress tester for an antenna feeder line to solve the problems raised in the above-mentioned background technology, effectively detect whether water has entered the antenna feeder line, and ensure the stable operation of the antenna feeder line.

[0040] The invention discloses a water ingress tester for an antenna feeder line, and the technical scheme adopted is: comprising a tester shell, a microampere-level ammeter, an N-type connector being arranged behind the tester shell, and an electric wire being connected to an inner cavity of the shell through the N-type connector, and the inner cavity of the shell being used to accommodate a button charger and four No. 7 batteries, and the ammeter can be detachably connected to the tester shell.

[0041] As a preferred solution of the antenna feeder water ingress tester described in the present invention, the inner cavity of the tester shell is composed of a microampere ammeter, a button charger, and four AAA batteries.

[0042] As a preferred solution of the antenna feeder line water ingress tester described in the present invention, an n-type interface is reserved on the rear side of the tester housing.

[0043] As a preferred solution of the antenna feeder line water ingress tester described in the present invention, a position for a button charger button is reserved on the upper side of the tester housing.

[0044] As a preferred solution of the antenna feeder water ingress tester of the present invention, the button charger is powered by four AA batteries, and the AA batteries will only supply power when the button of the button charger is pressed.

[0045] As a preferred solution of the antenna feeder water ingress tester described in the present invention, the button charger and the microampere ammeter, and the n-type connector and the microampere ammeter are connected in parallel.

[0046] like Figure 2-Figure 4 As shown, the present invention discloses a water ingress tester for an antenna feeder line, comprising a tester housing 1, a microampere-level ammeter 3, an N-type connector 5 is arranged behind the tester housing 1, and the wires are connected to the inner cavity of the housing through the N-type connector 5. The inner cavity of the housing is used to accommodate a button charger 2 and four No. 7 batteries 6, and the ammeter can be detachably connected to the tester housing 1.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for detecting water ingress into a cable joint, characterized in that: The steps include: S1, zero adjustment; S2, the cable is connected to the water inlet tester; S3, if the pointer of the microampere level ammeter (3) of the water ingress tester moves, the cable has been flooded; S4. The pointer of the microampere-level ammeter (3) of the water inlet tester does not deviate. Press the button of the push button charger (2), release the button and observe whether the pointer returns to the normal position. S5. Determine whether the cable has been flooded by judging whether the pointer returns to normal at a uniform speed.

2. The method for detecting water ingress into a cable joint according to claim 1, characterized in that: In the step S1, the microampere level ammeter (2) is zeroed using a zeroing knob (4).

3. The method for detecting water ingress into a cable joint as claimed in claim 2, characterized in that: In step S2, the cable is connected to the antenna feeder water ingress tester via the n-type interface (5).

4. The method for detecting water ingress into a cable joint as claimed in claim 3, characterized in that: In step S3, two metals with different potentials are placed in an electrolyte to generate a current, causing the pointer of the microampere-level ammeter (3) to deflect significantly, indicating that water has entered the cable.

5. The method for detecting water ingress into a cable joint as claimed in claim 4, characterized in that: In step S4, when the electrolyte concentration is too low and the generated current is too small to cause the microampere-level ammeter (3) to deflect, the button of the push-button charger (2) is pressed for three seconds to charge, causing the pointer of the microampere-level ammeter (2) to deflect, and then the button is released to observe whether the pointer returns to normal.

6. The method for detecting water ingress into a cable joint as claimed in claim 5, characterized in that: In step S5, the pointer returns to the correct position at different speeds when the original battery and the capacitor are discharged. When the pointer returns to the correct position evenly, it is the capacitor discharge characteristic, and there is no electrolyte, that is, the cable has not been flooded. On the contrary, when the pointer returns to the correct position curve changes, it is the battery discharge characteristic, and there is electrolyte, that is, the cable has been flooded.

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