Novel triggering device for measuring surge

Abstract

The utility model provides a novel trigger device for measuring surge, which belongs to the field of surge detection, and is characterized in that a measuring assembly is arranged, the positive electrode of a power supply is connected to a positive terminal IN-VCC, the negative electrode of the power supply is connected to a negative terminal GND, and after the voltage is reduced to 12V through a DCDC voltage reduction module, the measuring assembly is connected to the positive terminal IN-VCC and the negative terminal GND; the relay is connected to a group of normally-closed contacts and a group of normally-open contacts of the two lock-free switches, relay contacts 8 and 12 are controlled to carry out power-on and power-off operation on the coil so as to realize self-locking control and keep the coil in a power-off state when the coil is powered on for the first time, and normally-open contacts 5 and 9 of the relay are respectively connected to two binding posts of the OUT-VCC binding post and are used for supplying power to a load. When the surge waveform of the load needs to be measured, the coil of the relay is controlled to be electrified through the lock-free switch, so that the normally open contacts 5 and 9 of the relay are closed to supply power to the load, and at the moment, the oscilloscope is adjusted to a proper surge waveform trigger parameter by utilizing the high efficiency of closing and breaking of the relay.

Description

Technical Field

[0001] This utility model relates to the field of surge detection, and more specifically, to a novel triggering device for measuring surges. Background Technology

[0002] In the testing of electronic products, accurate measurement of surge waveforms is crucial for assessing the stability and reliability of the products.

[0003] Traditional surge waveform measurement methods are often affected by the surge current of the power supply itself, leading to inaccurate measurement results. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the current surge waveform testing, the surge of the power supply is superimposed on the surge of the load itself at the moment of power-on, resulting in inaccurate measurement results.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] The present invention is as follows: a novel surge measurement triggering device, comprising a PCB board, wherein a measurement component is disposed on the PCB board;

[0007] The measuring component includes a DC-DC step-down module for stepping down a 15V-60V supply voltage to 12V. A relay with 8 contacts is mounted on the PCB board. A latching switch with 6 contacts is mounted on the PCB board for controlling the closing and opening of the relay. Two OUT-VCC terminals are mounted on the PCB board. A slow-short fuse is mounted on the output terminal of the DC-DC step-down module. A freewheeling diode is connected in parallel to the coil terminal of the relay.

[0008] As a preferred technical solution of this utility model, the number of the lockless switches is two, which respectively control the two ends of the relay coil to achieve self-locking control and keep the coil in the un-energized state when the load is first energized, that is, keep the load in the de-energized state when the load is first energized.

[0009] As a preferred technical solution of this utility model, the relay has two normally open contacts, which are respectively connected to the two OUT-VCC terminals of the load power supply terminal.

[0010] As a preferred technical solution of this utility model, the PCB board is provided with a positive terminal IN-VCC and a negative terminal GND for connecting the power supply.

[0011] As a preferred technical solution of this utility model, the operating voltage of the relay is 12V.

[0012] As a preferred technical solution of this utility model, the slow-short fuse is used to prevent abnormal voltage output damage to the relay caused by the failure of the DC-DC step-down module device.

[0013] As a preferred technical solution of this utility model, the freewheeling diode is used to absorb the reverse electromotive force when the relay coil is de-energized, thus protecting the coil from damage.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting up the measurement component, when in use, connect the positive terminal of the power supply to the positive terminal IN-VCC and the negative terminal to the negative terminal GND. After the voltage is stepped down to 12V by the DC-DC step-down module, connect it to a set of normally closed contacts and a set of normally open contacts of two non-locking switches. Control the relay contacts 8 and 12 to turn the coil on and off to achieve self-locking control and keep the coil in the de-energized state when first energized. The normally open contacts 5 and 9 of the relay are connected to the two terminals of the OUT-VCC terminal to supply power to the load. When it is necessary to measure the surge waveform of the load, first control the relay coil to turn on through the non-locking switch, so that the normally open contacts 5 and 9 of the relay close to supply power to the load. At this time, take advantage of the high efficiency of the relay's closing and opening to adjust the oscilloscope to the appropriate surge waveform trigger parameters. After the measurement is completed, control the relay coil to turn off through the non-locking switch again, so that the normally open contacts 5 and 9 of the relay open to de-energize the load.

[0016] 2. By setting a slow-short fuse and a freewheeling diode, the output terminal of the DC-DC step-down module is equipped with a slow-short fuse during use to prevent abnormal voltage output from damaging the relay due to the failure of the DC-DC device itself; the freewheeling diode is connected in parallel at the relay coil terminal to absorb the reverse electromotive force when the power is off, protecting the coil from damage. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the novel surge measurement triggering device provided by this utility model;

[0018] Figure 2 Wiring diagram of the novel surge measurement triggering device provided by this utility model;

[0019] Figure 3 A schematic diagram of the novel surge measurement triggering device provided by this utility model.

[0020] The diagram shows: 1. PCB board; 2. Measurement components; 201. DC-DC step-down module; 202. Relay; 203. Unlocked switch; 204. OUT-VCC terminal; 205. Slow-short fuse; 206. Freewheeling diode; 3. Positive terminal IN-VCC; 4. Negative terminal GND. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0022] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] like Figure 1 As shown, this embodiment proposes a novel surge measurement triggering device, including a PCB board 1, on which a measurement component 2 is disposed;

[0026] like Figure 2 and Figure 3 As shown, the measuring component 2 includes a DC-DC step-down module 201 for stepping down a 15V-60V supply voltage to 12V. A relay 202 with 8 contacts is mounted on the PCB board 1. A latching switch 203 with 6 contacts is also mounted on the PCB board 1 to control the opening and closing of the relay 202. Two OUT-VCC terminals 204 are mounted on the PCB board 1. The output terminal of the DC-DC step-down module 201 is equipped with… The slow-short fuse 205 and the relay 202 have a freewheeling diode 206 connected in parallel to the coil terminal. When it is necessary to measure the surge waveform of the load, the coil of the relay 202 is first energized by the non-locking switch 203, so that the normally open contacts 5 and 9 of the relay 202 are closed to supply power to the load. At this time, the surge waveform at the load terminal is captured by an oscilloscope. After the measurement is completed, the coil of the relay 202 is de-energized again by the non-locking switch 203, so that the normally open contacts 5 and 9 of the relay 202 are opened to de-energize the load.

[0027] like Figure 2 and Figure 3As shown, in a preferred embodiment, based on the above method, there are two lockless switches 203, which control the two ends of the coil of the relay 202 respectively, so as to realize self-locking control and keep the coil in the un-energized state when the load is first energized, that is, keep the load in the de-energized state when the load is first energized. The mechanism of self-locking control and keeping the coil in the un-energized state when the load is first energized protects the load when abnormal situations occur during the first energization.

[0028] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the relay 202 has two normally open contacts, which are respectively connected to the two OUT-VCC terminals 204 of the load power supply terminal. By utilizing the high efficiency of the relay's closing and opening characteristics, the oscilloscope is assisted in setting reasonable trigger waveform parameters, thereby achieving accuracy, precision, and efficiency in capturing surge waveforms.

[0029] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the PCB board 1 is further provided with a positive terminal IN-VCC3 and a negative terminal GND4 for connecting the power supply.

[0030] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the operating voltage of relay 202 is further 12V.

[0031] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the slow-short fuse 205 is further used to prevent abnormal voltage output damage to the relay 202 caused by device failure of the DC-DC step-down module 201.

[0032] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the freewheeling diode 206 is further used to absorb the reverse electromotive force when the coil of the relay 202 is de-energized, thus protecting the coil from damage.

[0033] Specifically, during operation / use, the triggering device for this novel surge measurement operates as follows: The positive terminal of the power supply is connected to the positive terminal IN-VCC3, and the negative terminal is connected to the negative terminal GND4. The voltage is stepped down to 12V via the DC-DC step-down module 201 and then connected to one set of normally closed contacts and one set of normally open contacts of the two unlocked switches 203. This controls the coil to be energized and de-energized via contacts 8 and 12 of the relay 202, achieving self-locking control and maintaining the coil in an de-energized state upon initial energization. The normally open contacts 5 and 9 of the relay 202 are respectively connected to O... The two terminals of UT-VCC terminal 204 are used to supply power to the load. When it is necessary to measure the surge waveform of the load, firstly, the coil of relay 202 is energized by the non-locking switch 203, causing the normally open contacts 5 and 9 of relay 202 to close, thus supplying power to the load. At this time, the high efficiency of relay 202's closing and opening is utilized to adjust the oscilloscope to the appropriate surge waveform trigger parameters. After the measurement is completed, the coil of relay 202 is de-energized again by the non-locking switch 203, causing the normally open contacts 5 and 9 of relay 202 to open, thus de-energizing the load. Figure 2 and Figure 3 The DC-DC step-down module 201 has a slow-short fuse 205 at its output terminal to prevent abnormal voltage output damage to the relay 202 caused by a fault in the DC-DC device itself; a freewheeling diode 206 is connected in parallel to the coil terminal of the relay 202 to absorb the reverse electromotive force when the power is off, protecting the coil from damage. Figure 2 and Figure 3 ).

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A new type of surge measuring trigger device comprising a PCB board (1), characterized in that, The PCB board (1) is provided with a measuring component (2); The measuring component (2) includes a DC-DC step-down module (201) for stepping down a 15V-60V power supply voltage to 12V. A relay (202) is provided on the PCB board (1). The relay (202) has 8 contacts. A lock-free switch (203) for controlling the closing and opening of the relay (202) is provided on the PCB board (1). Each lock-free switch (203) has 6 contacts. Two OUT-VCC terminals (204) are provided on the PCB board (1). A slow-short fuse (205) is provided on the output terminal of the DC-DC step-down module (201). A freewheeling diode (206) is connected in parallel to the coil terminal of the relay (202).

2. A novel trigger device for measuring surge according to claim 1, characterized in that, There are two lockless switches (203), which control the two ends of the coil of the relay (202) respectively to achieve self-locking control and keep the coil in the un-energized state when the load is first energized, that is, keep the load in the de-energized state when the load is first energized.

3. A novel trigger device for measuring surge according to claim 1, characterized in that, The relay (202) has two normally open contacts, which are respectively connected to the two OUT-VCC terminals (204) of the load power supply terminal.

4. A novel trigger device for measuring surge according to claim 1, characterized in that, The PCB board (1) is provided with a positive terminal IN-VCC (3) and a negative terminal GND (4) for connecting to the power supply.

5. The novel surge measurement triggering device according to claim 1, characterized in that, The operating voltage of the relay (202) is 12V.

6. A novel trigger device for measuring surge according to claim 1, characterized in that, The slow-short fuse (205) is used to prevent abnormal voltage output damage to the relay (202) caused by device failure of the DC-DC step-down module (201).

7. A novel trigger device for measuring surge according to claim 1, characterized in that, The freewheeling diode (206) is used to absorb the reverse electromotive force when the relay (202) coil is de-energized, protecting the coil from damage.

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