Water-tight travel switch intelligent detection device and method

Abstract

The application discloses a watertight travel switch intelligent detection device and method, which comprises a switch control module, a WP-4P connector compression module, a power supply module, a voltage monitoring module, a static current monitoring module and a load module. The switch control module is used for controlling the switch to be in an open state or a closed state. The WP-4P connector compression module is connected with the measured watertight travel switch. The power supply module is used for converting commercial power into power input with different voltages. The voltage monitoring module is used for measuring the voltage of the output end of the measured watertight travel switch under different power supply conditions. The static current monitoring module is used for detecting the static current of the measured watertight travel switch under different power supply conditions. The load module comprises a plurality of different loads. The load current monitoring module is used for monitoring the load current of the measured watertight travel switch under different power supply conditions. The application can realize the simulation of the working state of the intelligent switch under all-around multi-state conditions.

Description

Technical Field

[0001] This invention relates to the field of electronic component testing, and in particular to an intelligent testing device and method for watertight limit switches. Background Technology

[0002] Watertight limit switches for underwater equipment are intelligent switches typically used at depths of 500-600 meters. They require high reliability and have complex technical specifications, involving over 30 electrical parameter tests, including power supply voltage, quiescent current, output voltage, load current, insulation resistance between the casing and all core wires, and retesting of various technical parameters after a watertight test. Currently, testing of watertight limit switches is done manually by pulling out the wires and applying input voltage and load. This process is cumbersome and time-consuming, resulting in very low efficiency for batch product inspection. Summary of the Invention

[0003] The present invention aims to propose an intelligent testing device and method for watertight limit switches, which has the ability to automatically test indicators such as power supply voltage, working distance, static current, output voltage, and load current, and realize efficient batch testing conditions for watertight limit switches.

[0004] The technical solution adopted in this invention is:

[0005] A smart detection device for a watertight limit switch is provided, comprising:

[0006] The switch control module is connected to the watertight limit switch being tested and is used to control it to be in either open or closed state.

[0007] The WP-4P connector clamping module is connected to the watertight limit switch being tested.

[0008] The power supply module has its input end connected to the mains power and its output end connected to the WP-4P connector clamping module, which is used to convert the mains power into a power input of various different voltages;

[0009] The voltage monitoring module, connected to the WP-4P connector clamping module, is used to measure the voltage at the output terminal of the watertight limit switch under different power supply conditions;

[0010] The static current monitoring module, connected to the WP-4P connector clamping module, is used to detect and measure the static current of the watertight limit switch under different power supply conditions.

[0011] The load module, connected to the watertight limit switch under test, includes multiple different loads;

[0012] The load current monitoring module, connected to the WP-4P connector clamping module, is used to monitor the load current of the watertight limit switch under different power supply conditions.

[0013] According to the above technical solution, the power supply module includes an 8V power supply module, a 24V power supply module, and a 30V power supply module.

[0014] According to the above technical solution, the switch control module includes a magnet base and an 8mm long epoxy glass plate glued to the magnet base.

[0015] According to the above technical solution, the load module includes an 8V power supply load module, a 24V power supply load module, and a 30V power supply load module.

[0016] According to the above technical solution, the 8V power supply load module is composed of three 120Ω resistors connected in parallel and then connected in series with one 0.1Ω resistor.

[0017] According to the above technical solution, the 24V power supply load module is composed of a 1Ω resistor, a 10Ω resistor, a 15Ω resistor, a 4.7Ω resistor and a 100Ω resistor connected in series.

[0018] According to the above technical solution, the 30V power supply load module is composed of two 300Ω resistors connected in parallel and then connected in series with a 0.1Ω resistor.

[0019] Following the above technical solution, the WP-4P connector clamping module is connected to the input power supply via signal lines, power lines, ground lines, and a watertight limit switch.

[0020] Following the above technical solution, the voltage monitoring module is a digital multimeter used to monitor the output voltage of the watertight limit switch under different voltage inputs, different load conditions, and different operating states.

[0021] According to the above technical solution, the magnet base is not less than 350mT and is bonded to the epoxy glass plate. The length of the epoxy glass plate is 8mm, which is the working distance of the watertight limit switch.

[0022] This invention also provides an intelligent detection method for watertight limit switches, which is based on the intelligent detection device for watertight limit switches described above, and includes the following steps:

[0023] Step 1: Connect the mains power to the intelligent detection device for the watertight limit switch and connect the voltage monitoring module. Adjust the 8V, 24V, and 30V power supply modules respectively. Use the voltage monitoring module to measure whether the voltage of the three power supply modules is correct. If it is correct, it means that the intelligent detection device for the watertight limit switch is in normal self-test mode.

[0024] Step 2: Connect the load modules that are compatible with the power supply module, connect the watertight limit switch under test to the WP-4P connector clamping module as required, and connect the static current monitoring module and the load current monitoring module.

[0025] Step 3: Turn on the 8V, 24V, and 30V power supply module switches respectively, and use the static current monitoring module to detect the static current of the watertight limit switch under test.

[0026] Step 4: Place the S pole of the magnet base with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch under test. When the glass plate is in contact with the watertight limit switch under test, turn on the 8V, 24V, and 30V power supply module switches respectively. Use the voltage monitoring module to measure the output voltage under different power supply conditions, and at the same time obtain the working distance of the watertight limit switch under test.

[0027] Step 5: Place the S pole of the magnet holder with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch under test. When the glass plate is in contact with the watertight limit switch under test, turn on the 8V, 24V, and 30V power supply module switches respectively, and use the load current monitoring module to detect the load current of the watertight limit switch under test.

[0028] The beneficial effects of this invention are as follows: This invention enables the testing of the following parameters of a watertight limit switch: a) power supply voltage, quiescent current, output voltage, and load current; b) output voltage under different power supply voltages in both open and closed states; c) the maximum trigger distance of the switch. Compared with existing detection methods, this invention provides a complete set of detection signals from multiple independent power supplies and multiple independent loads, enabling comprehensive simulation of the working state of the intelligent switch under multiple states. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the intelligent detection device for watertight limit switches according to an embodiment of the present invention;

[0031] Figure 2 This is a flowchart of the intelligent detection method for watertight limit switches according to an embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] like Figure 1As shown, the intelligent detection device for watertight limit switches in this embodiment of the invention includes a static current monitoring module 1, a load current monitoring module 2, a power supply module, a load module, a WP-4P connector clamping module 6, a 220V power input module 7, a voltage monitoring module 8, a magnet base 9, an 8mm epoxy glass plate 10, and the watertight limit switch under test 11. The power supply module includes an 8V power supply module 3, a 24V power supply module 4, and a 30V power supply module 5.

[0034] Among them, the static current monitoring module 1 is used to detect and display the static output current of the watertight limit switch in real time, and is composed of a 0-500mA DC current meter and a digital display module.

[0035] The load current monitoring module 2 is used to detect and display the load output current of the watertight limit switch in real time. It consists of a 0-500mA DC current meter and a digital display module.

[0036] The power supply module includes an 8V power supply module 3, a 24V power supply module 4, and a 30V power supply module 5. The 8V power supply module can provide an 8±1V power input to the watertight limit switch, the 24V power supply module can provide a 24±1V power input to the watertight limit switch, and the 30V power supply module can provide a 30±1V power input to the watertight limit switch.

[0037] like Figure 1 As shown, the load module includes load module a powered by an 8V power supply, load module b powered by a 24V power supply, and load module c powered by a 30V power supply. The resistance value of the load module can be configured according to different power supplies, as long as the circuit current is less than or equal to a certain current value (I≤200mA in this embodiment of the invention). In a preferred embodiment of the invention, load module a powered by an 8V power supply is composed of three 120Ω resistors connected in parallel and then connected in series with a 0.1Ω resistor; load module b powered by a 24V power supply is composed of a 1Ω resistor, a 10Ω resistor, a 15Ω resistor, a 4.7Ω resistor, and a 100Ω resistor connected in series; and load module c powered by a 30V power supply is composed of two 300Ω resistors connected in parallel and then connected in series with a 0.1Ω resistor.

[0038] The WP-4P connector clamping module 4 can connect the watertight limit switch to the input power supply, and includes three wires: signal wire, power wire, and ground wire;

[0039] The 220V power input module 7 is used to power the entire test system;

[0040] The voltage monitoring module uses a digital multimeter to monitor the output voltage of the limit switch under different voltage inputs, different load conditions, and different operating states.

[0041] The magnet base 9 is not less than 350mT and is bonded to the epoxy glass plate 10. The length of the epoxy glass plate 10 is 8mm, which is the working distance of the watertight limit switch. The change in the physical distance between the magnet base 9 and the switch changes the magnetic flux to achieve Hall effect characteristics, triggering the conduction and closure of the watertight limit switch to detect its working status.

[0042] Power the watertight limit switch under test through the power supply module, and adjust the power supply voltage to 8±1V, 24±1V, and 30±1V respectively, so that the switch operates in these three voltage modes respectively. After 1 minute, the static current of the watertight limit switch can be measured through the static current monitoring module 1. Connect the switch under test to the load module, and adjust the power supply voltage to 8±1V, 24±1V, and 30±1V respectively. After 1 minute, the load current can be measured through the load current monitoring module 2. Control the switch to open and closed states through the magnet base 9 and the 8mm epoxy glass plate 10, and adjust the power supply voltage to 8±1V, 24±1V, and 30±1V respectively. The voltage monitoring module 8 measures the output voltage, so as to determine whether the working characteristics of the switch meet the technical specifications.

[0043] like Figure 2 As shown, the intelligent detection method for watertight limit switches in this embodiment of the invention includes the following steps:

[0044] Step 1: Connect the 220V power supply to the detection system and connect the voltage monitoring module. Adjust the 8V, 24V, and 30V power supply modules respectively. Use the voltage monitoring module to measure whether the voltage of the three power supply modules is 8±1V, 24±1V, and 30±1V. If it is correct, it means that the detection system is in normal self-test mode.

[0045] Step 2: Connect the load modules that are compatible with the power supply module, connect the watertight limit switch to the WP-4P connector clamping module as required, and connect the current monitoring module.

[0046] Step 3: Turn on the 8V, 24V, and 30V power supply module switches respectively, and use the static current monitoring module to detect the static current of the watertight limit switch;

[0047] Step 4: Place the S pole of the magnet base with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch. When the glass plate is in contact with the limit switch, turn on the 8V, 24V, and 30V power supply module switches respectively. Use the voltage monitoring module to measure the output voltage under different power supply conditions, and at the same time obtain the working distance of the watertight limit switch.

[0048] Step 5: Place the S pole of the magnet base with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch. When the glass plate is in contact with the limit switch, turn on the 8V, 24V, and 30V power supply module switches respectively, and use the load current monitoring module to detect the load current of the watertight limit switch.

[0049] In summary, this invention solidifies the critical reversal point of 8mm by bonding an 8mm thick epoxy glass plate to the magnet base, thus enabling the performance testing of the watertight limit switch when the trigger distance between the S pole of the magnet base is 8mm. The method of solidifying the critical reversal point greatly reduces the error in finding the critical point during movement.

[0050] Furthermore, the present invention has a complete set of detection signals provided by three independent power supplies and three independent loads, which can realize the simulation of the working state of the smart switch in all directions and under multiple states.

[0051] Furthermore, while meeting the testing requirements, this invention achieves a miniaturized design of the testing device, making it easy to carry and move; the test panel is partitioned, the wiring method is optimized, and the testing steps are simplified.

[0052] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A smart detection device for a watertight limit switch, characterized in that, include: The switch control module is connected to the watertight limit switch being tested and is used to control it to be in either open or closed state. The WP-4P connector clamping module is connected to the watertight limit switch being tested. The power supply module has its input end connected to the mains power and its output end connected to the WP-4P connector clamping module, which is used to convert the mains power into a power input of various different voltages; The voltage monitoring module, connected to the WP-4P connector clamping module, is used to measure the voltage at the output terminal of the watertight limit switch under different power supply conditions; The static current monitoring module, connected to the WP-4P connector clamping module, is used to detect the static current of the watertight limit switch under different power supply conditions; The load module, connected to the watertight limit switch under test, includes multiple different loads; The load current monitoring module, connected to the WP-4P connector clamping module, is used to monitor the load current of the watertight limit switch under different power supply conditions. The switch control module includes a magnet base and an 8mm long epoxy glass plate glued to the magnet base. The S pole of the magnet base with the 8mm epoxy glass plate glued to it is brought close to the head of the watertight limit switch under test. When the glass plate is in contact with the watertight limit switch under test, the switches of different power supply modules are turned on respectively. The voltage monitoring module measures the output voltage under different power supply conditions and obtains the working distance of the watertight limit switch under test. The load current monitoring module detects the load current of the watertight limit switch under test.

2. The intelligent detection device for watertight limit switches according to claim 1, characterized in that, The power supply modules include an 8V power supply module, a 24V power supply module, and a 30V power supply module.

3. The intelligent detection device for watertight limit switches according to claim 1, characterized in that, The load module includes an 8V power supply load module, a 24V power supply load module, and a 30V power supply load module.

4. The intelligent detection device for watertight limit switches according to claim 3, characterized in that, The 8V power supply load module consists of three 120Ω resistors connected in parallel and then connected in series with one 0.1Ω resistor.

5. The intelligent detection device for watertight limit switches according to claim 3, characterized in that, The 24V power supply load module consists of a 1Ω resistor, a 10Ω resistor, a 15Ω resistor, a 4.7Ω resistor, and a 100Ω resistor connected in series.

6. The intelligent detection device for watertight limit switches according to claim 3, characterized in that, The 30V power supply load module consists of two 300Ω resistors connected in parallel and then connected in series with a 0.1Ω resistor.

7. The intelligent detection device for watertight limit switches according to claim 1, characterized in that, The WP-4P connector clamping module is connected to the watertight limit switch to be tested via signal lines, power lines, and ground lines.

8. The intelligent detection device for a watertight limit switch according to any one of claims 1-7, characterized in that, The voltage monitoring module is a digital multimeter used to monitor the output voltage of the watertight limit switch under different voltage inputs, different loads, and different operating states.

9. A method for intelligent detection of a watertight limit switch, characterized in that, The intelligent detection device for the watertight limit switch based on claim 1 includes the following steps: Step 1: Connect the mains power to the intelligent detection device for the watertight limit switch and connect the voltage monitoring module. Adjust the 8V, 24V, and 30V power supply modules respectively. Use the voltage monitoring module to measure whether the voltage of the three power supply modules is correct. If it is correct, it means that the intelligent detection device for the watertight limit switch is in normal self-test mode. Step 2: Connect the load modules that are compatible with the power supply module, connect the watertight limit switch under test to the WP-4P connector clamping module as required, and connect the static current monitoring module and the load current monitoring module. Step 3: Turn on the 8V, 24V, and 30V power supply module switches respectively, and use the static current monitoring module to detect the static current of the watertight limit switch under test. Step 4: Place the S pole of the magnet base with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch under test. When the glass plate is in contact with the watertight limit switch under test, turn on the 8V, 24V, and 30V power supply module switches respectively. Use the voltage monitoring module to measure the output voltage under different power supply conditions, and at the same time obtain the working distance of the watertight limit switch under test. Step 5: Place the S pole of the magnet holder with the 8mm epoxy glass plate bonded to it close to the head of the watertight limit switch under test. When the glass plate is in contact with the watertight limit switch under test, turn on the 8V, 24V, and 30V power supply module switches respectively, and use the load current monitoring module to detect the load current of the watertight limit switch under test.

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