Satellite load surge current testing device for star-covering sea-reflection all-in-one machine

Abstract

The utility model provides a satellite load surge current testing device for a star-masking sea counter integrated machine. The satellite load surge current testing device comprises a magnetic latching relay, a first power supply connector, a second power supply connector, a sea counter load and an oscilloscope, the magnetic latching relay is respectively connected with the first power supply connector and the second power supply connector, the second power supply connector is connected with the sea counter load through an output lead, and a surge current test meter pen of the oscilloscope is connected to the output lead; the magnetic latching relay is connected with a power supply through the first power supply connector, and responds to the on-off control of the magnetic latching relay, and the surge current testing meter pen of the oscilloscope is used for testing the power-on surge current of the sea counter load. According to the utility model, the magnetic latching relay is taken as a core, the action time is less than 1ms, and the magnetic latching relay is matched with a peripheral circuit, so that the instant power-on of the power supply is realized during the surge current test, the surge current data under the real application condition can be obtained during the electrical debugging process of the star-sea-masked anti-all-in-one satellite load, and the use safety of equipment is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sea reflector load surge current testing, in particular to a satellite load surge current testing device for an occultation sea reflector integrated machine. Background Art

[0002] The basic function of the occultation and ocean reflection integrated satellite payload is to use the global satellite navigation constellation system to simultaneously receive and process the occultation reflection signal and the ocean reflection signal, so as to realize timely and accurate prediction and forecast of the real-time weather and extreme ocean weather in local areas, playing an increasingly important role in the fields of ocean navigation, precision agriculture, disaster reduction and prevention, etc.

[0003] The satellite payload of the occultation and sea-reflection integrated machine is a part of the many payloads of the whole satellite. Its normal operation needs to be powered by the primary power supply of the whole satellite. However, since the primary power supply on the whole satellite is not surge-suppressed, the surge current test is an important part of the electrical parameter test of the sea-reflection payload.

[0004] The existence of surge current is due to the presence of a large number of capacitors in the load equipment, which play an important role in stabilizing the power supply and filtering out the clutter and harmonics of the power supply. However, at the moment of power supply of the entire satellite, the capacitor is equivalent to a short circuit for the transient voltage, which will cause a large current spike in the initial power-on current. This current spike is the surge current. The size of the surge current is crucial to the normal operation of the load. Excessive surge current will cause the load to be abnormal due to overcurrent.

[0005] Before the load is officially put on the satellite, the surge current test is generally carried out using a conventional power supply test in the laboratory. However, conventional power supplies are all powered by a separate DC voltage source, and the DC voltage source is generally integrated with a surge suppression circuit, that is, the power-on time of the power supply is controlled to be relatively slow (generally >30ms), to ensure that the back-end load will not be affected by a large impact current; however, under such test conditions, the surge current test will be distorted, and the surge current measured under actual application conditions will be smaller; since there is no surge suppression circuit on the entire satellite, the power-on time is <1ms; due to the instantaneous power-on, a surge current that is too large compared to the test result will be generated, which will burn out the equipment. Summary of the invention

[0006] In view of this, the utility model aims to provide a satellite payload surge current test device for an occultation and sea-reflection integrated machine to solve the deficiencies of the above problems.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] The utility model provides a satellite payload surge current test device for an occultation and sea-reflection integrated machine, comprising a magnetic latching relay, a first power supply connector, a second power supply connector, a sea-reflection payload and an oscilloscope;

[0009] The magnetic latching relay is respectively connected to the first power supply connector and the second power supply connector, the second power supply connector is connected to the sea reactor load through an output wire, and the surge current test lead of the oscilloscope is connected to the output wire;

[0010] The magnetic latching relay is powered on through the first power supply connector, and in response to controlling the on and off of the magnetic latching relay, the power-on surge current of the sea reactor load is tested through the surge current test probe of the oscilloscope.

[0011] Further, the second pin of the magnetic latching relay is connected to the first pin of the first power supply connector, the third pin and the eighth pin of the magnetic latching relay are connected to the first pin of the second power supply connector, the fifth pin and the ninth pin of the magnetic latching relay are connected to the second pin of the second power supply connector, and the fourth pin and the tenth pin of the magnetic latching relay are connected to the third pin of the second power supply connector.

[0012] Furthermore, the magnetic latching relay is also connected to a push button switch, the VIN_ON pin of the push button switch is respectively connected to the first pin of the magnetic latching relay and the third pin of the first power supply connector, and the VIN_OFF pin of the push button switch is respectively connected to the sixth pin of the magnetic latching relay and the fourth pin of the first power supply connector.

[0013] Furthermore, the second pin of the second power supply connector is connected to the sea reactor load through an output wire.

[0014] Furthermore, the magnetic latching relay adopts a 2JB1-910 / V12-1 model relay, and its action time is <1ms.

[0015] Furthermore, the model of the first power supply connector is KF127_4, and the model of the second power supply connector is KF127_3.

[0016] Compared with the prior art, the satellite payload surge current test device for the occultation and sea reflection integrated machine described in the utility model has the following beneficial effects:

[0017] The utility model discloses a surge current testing device for an occultation and sea-reflection integrated satellite payload, with a magnetic latching relay as the core and an action time of less than 1 ms. It is matched with a peripheral circuit to realize instantaneous power-on of the power supply during the surge current test, thereby ensuring that the occultation and sea-reflection integrated satellite payload can obtain surge current data under real application conditions during the electrical debugging process, thereby ensuring the safe use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a block diagram of the overall structure connection of the test device according to an embodiment of the utility model;

[0020] Figure 2 A circuit diagram of a test device according to an embodiment of the present utility model;

[0021] Figure 3 This is a PCB board layout diagram of the test device described in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] See also Figure 1 As shown, this embodiment provides a surge current test device for an occultation and sea-reflection integrated satellite payload, including a magnetic latching relay, a first power supply connector, a second power supply connector, a sea-reflection payload, and an oscilloscope, wherein the magnetic latching relay is connected to the first power supply connector and the second power supply connector, respectively, the second power supply connector is connected to the sea-reflection payload through an output wire, and a surge current test probe of the oscilloscope is connected to the output wire;

[0025] The magnetic latching relay is powered on through the first power supply connector, and in response to controlling the on and off of the magnetic latching relay, the power-on surge current of the sea reactor load is tested through the surge current test probe of the oscilloscope.

[0026] Specifically, in this embodiment, the test device includes a magnetic holding relay (2JB1-910 / V12-1), a relay power supply (12V input), a power supply connector (KF127_4), and a vertical four-corner push button switch (SW_PB) for controlling the on and off of the relay, and a controlled signal connector (KF127_3), where the controlled signal is the power supply of the sea reaction load. The power supply is connected to one of the pins of KF127_3, and the output is connected to the sea reaction load in the form of an output wire through another pin of KF127_3. Then, the surge current test lead of the oscilloscope is connected to the output wire to test the power-on surge current of the sea reaction load.

[0027] Figure 2 The circuit diagram of the test device is as follows: After the power supply is connected to the magnetic latching relay through the KF127_4 connector, the button switch is used to control whether the power-on command (VIN_ON) or the power-off command (VIN_OFF) is connected to 12V_GND, thereby controlling the current to flow through the specified coil.

[0028] According to the law of electromagnetic induction, when current flows through the coil instantaneously, a magnetic field will be generated to control the action of the DIP switch in the middle to achieve path switching. D1 and D2 are freewheeling diodes. At the moment of path switching, since the inductor current cannot change transiently, if there is no diode, a large voltage will be generated, causing a safety hazard. By connecting a diode in parallel near the coil, the current in the path will gradually discharge through the freewheeling path at the moment the channel is closed, ensuring safe use.

[0029] Figure 3 This is the PCB layout of the relay module. The PCB board size is 5cm*4cm, which realizes the miniaturization of the module. M1, M2, M3 and M4 are located at the four corners of the board to fix the board. The relay is located in the middle right position of the board, and the two vertical four-corner switches are located side by side at the bottom of the board. The switch functions are marked with silk screen on the top for easy testing. The relay power connector J1 is located on the left side of the board, and the input and output of the controlled signal are located on the right side of the board.

[0030] The surge current test device for the satellite payload of the occultation and sea-reflection integrated machine described in this embodiment adopts a military-grade magnetic latching relay as the core, model 2JB1-910 / V12-1, with an action time of <1ms, and is equipped with a simple peripheral circuit to achieve instant power-on of the power supply during the surge current test, thereby ensuring that the satellite payload of the occultation and sea-reflection integrated machine can obtain surge current data under real application conditions during the electrical debugging process, thereby ensuring the safe use of the equipment.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A satellite payload surge current test device for an occultation and sea-reflection integrated machine, characterized in that: It includes a magnetic latching relay, a first power supply connector, a second power supply connector, a sea reaction load and an oscilloscope; The magnetic latching relay is respectively connected to the first power supply connector and the second power supply connector, the second power supply connector is connected to the sea reactor load through an output wire, and the surge current test lead of the oscilloscope is connected to the output wire; The magnetic latching relay is powered on through the first power supply connector, and in response to controlling the on and off of the magnetic latching relay, the power-on surge current of the sea reactor load is tested through the surge current test probe of the oscilloscope.

2. The satellite payload surge current test device for an occultation and sea-reflection integrated machine according to claim 1 is characterized in that: The second pin of the magnetic latching relay is connected to the first pin of the first power supply connector, the third pin and the eighth pin of the magnetic latching relay are connected to the first pin of the second power supply connector, the fifth pin and the ninth pin of the magnetic latching relay are connected to the second pin of the second power supply connector, and the fourth pin and the tenth pin of the magnetic latching relay are connected to the third pin of the second power supply connector; The magnetic latching relay adopts 2JB1-910 / V12-1 model relay, and its action time is less than 1ms; The model of the first power supply connector is KF127_4, and the model of the second power supply connector is KF127_3.

3. The satellite payload surge current test device for an occultation and sea-reflection integrated machine according to claim 2 is characterized in that: The magnetic latching relay is also connected to a push button switch, the VIN_ON pin of the push button switch is respectively connected to the first pin of the magnetic latching relay and the third pin of the first power supply connector, and the VIN_OFF pin of the push button switch is respectively connected to the sixth pin of the magnetic latching relay and the fourth pin of the first power supply connector.

4. The satellite payload surge current test device for an occultation and sea-reflection integrated machine according to claim 1 is characterized in that: The second pin of the second power supply connector is connected to the sea reactor load through an output wire.

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