FTU lightning surge test remote signaling anti-positioning circuit

Abstract

The application relates to a remote signaling anti-positioning circuit based on an FTU lightning surge test, which comprises a surge generating unit, a remote signaling detection unit, a surge high-voltage detection unit and an anti-positioning output unit connected in series. The remote signaling anti-positioning circuit based on the FTU lightning surge test avoids the defects of poor anti-interference ability and high hardware cost of traditional circuits by cooperation of the surge generating unit, the remote signaling detection unit, the surge high-voltage detection unit and the anti-positioning output unit, so that the whole detection circuit is accurate, stable, practical and low in manufacturing cost.

Description

Technical Field

[0001] This application relates to the field of remote signaling anti-displacement circuit technology, and in particular to a remote signaling anti-displacement circuit based on FTU lightning surge testing. Background Technology

[0002] Traditional remote signaling anti-displacement circuits require the addition of TVS clamping circuits, Zener diode limiting circuits, and increased resistor values. The use of these circuits results in weak optocoupler conduction current, making remote signaling insensitive during normal use. At the same time, traditional remote signaling anti-displacement circuits are complex, have poor anti-interference capabilities, and high hardware costs. Utility Model Content

[0003] The purpose of this application is to provide an accurate, stable, and low-cost remote signaling anti-displacement circuit based on FTU lightning surge testing.

[0004] To achieve the above objectives, this utility model provides a remote signaling anti-displacement circuit based on FTU lightning surge testing, including a surge generation unit, a remote signaling detection unit, a surge high voltage detection unit, and an anti-displacement output unit;

[0005] The surge generation unit is used to generate lightning surge signals;

[0006] The remote signaling detection unit is connected to the surge generation unit and the anti-displacement output unit. It is used to receive the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a low level to the anti-displacement output unit. In the presence of lightning and surge, it outputs an abnormal remote signaling displacement to the anti-displacement output unit.

[0007] The surge high voltage detection unit is connected to the surge generation unit and the anti-displacement output unit respectively. It is used to receive the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a surge-free high level to the anti-displacement output unit. In the presence of lightning and surge, it outputs a low level to the anti-displacement output unit.

[0008] The anti-displacement output unit is connected to the remote signaling detection unit and the surge high voltage detection unit respectively. It is used to receive the signals output by the remote signaling detection unit and the surge high voltage detection unit. In the absence of lightning and surge, it outputs an invariant signal. In the presence of lightning and surge, it outputs a low-level displacement signal.

[0009] Furthermore, the surge generating unit includes a varistor RV1.

[0010] Corresponding to the surge generation unit, the remote signaling detection unit includes a contact S1, a resistor R1, an optocoupler DA1 and a resistor R4 connected in sequence. The contact S1 and the resistor R1 are respectively connected to the varistor RV1.

[0011] Corresponding to the surge generation unit, the surge high voltage detection unit includes a unidirectional TVS diode D1, a resistor R2, an optocoupler DA2 and a resistor R5 connected in sequence, and the unidirectional TVS diode D1 is connected to a varistor RV1.

[0012] Corresponding to the remote signaling detection unit and the surge high voltage detection unit, the anti-displacement output unit includes a connected electronic switch U1 and a resistor R6, and the electronic switch is connected to optocoupler DA1 and optocoupler DA2 respectively.

[0013] In summary, this utility model has the following beneficial effects: the remote signaling anti-displacement circuit based on FTU lightning surge testing, through the cooperation of surge generation unit, remote signaling detection unit, surge high voltage detection unit and anti-displacement output unit, avoids the shortcomings of traditional circuits such as poor anti-interference ability and high hardware cost, making the entire detection circuit accurate, stable and practical, and with low manufacturing cost. Attached Figure Description

[0014] Figure 1 This is a structural block diagram of the remote signaling anti-displacement circuit based on FTU lightning surge testing according to this utility model;

[0015] Figure 2 This is the circuit diagram of the remote signaling anti-displacement circuit based on FTU lightning surge testing according to this utility model. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0017] like Figure 1 The circuit shown is a remote signaling anti-displacement circuit based on FTU lightning surge testing, including a surge generation unit, a remote signaling detection unit, a surge high voltage detection unit, and an anti-displacement output unit;

[0018] The surge generation unit generates a lightning surge signal. The remote signaling detection unit is connected to the surge generation unit and the anti-displacement output unit, and receives the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a low level to the anti-displacement output unit; in the presence of a lightning surge, it outputs an abnormal remote signaling displacement to the anti-displacement output unit. The surge high voltage detection unit is connected to both the surge generation unit and the anti-displacement output unit, and receives the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a high level (no surge) to the anti-displacement output unit; in the presence of a lightning surge, it outputs a low level to the anti-displacement output unit. The anti-displacement output unit is connected to both the remote signaling detection unit and the surge high voltage detection unit, and receives the signals output by both units. In the absence of lightning and surge, it outputs a non-displacement signal; in the presence of a lightning surge, it outputs a low-level displacement signal.

[0019] Specifically, in combination Figure 2 As shown, the surge generation unit includes a varistor RV1, the remote signaling detection unit includes a contact S1, a resistor R1, an optocoupler DA1, and a resistor R4 connected in sequence, the contact S1 and the resistor R1 are respectively connected to the varistor RV1, the surge high voltage detection unit includes a unidirectional TVS diode D1, a resistor R2, an optocoupler DA2, and a resistor R5 connected in sequence, the unidirectional TVS diode D1 is connected to the varistor RV1, and the anti-displacement output unit includes a connected electronic switch U1 and a resistor R6, the electronic switch is respectively connected to the optocoupler DA1 and the optocoupler DA2.

[0020] Under normal working conditions without lightning strikes or surges, the unidirectional TVS diode D1 of the surge high voltage detection unit is not conducting, pins 1 and 2 of the optocoupler DA2 are not conducting, and pins 3 and 4 of the optocoupler DA2 are not conducting. The surge signal is pulled up through resistor R5 to output a surge-free high level to the anti-displacement output unit.

[0021] When the electronic switch U1 of the anti-displacement output unit receives a high level at pin 6, the electronic switch U1 switches the internal switch to the channel from A1 to B, and receives the analog remote signal from the remote signaling detection unit. When the contact S1 is not pressed, the YX24V power supply does not reach the resistor R1, pins 1 and 2 of the optocoupler DA1 are not conducting, and pins 3 and 4 are not conducting. The high-level signal is output to pin 1 A1 of the electronic switch U1 of the anti-displacement output unit through the pull-up resistor R4. The anti-displacement output unit outputs a normal high-level undisplacement signal pulled up by the resistor R6.

[0022] When contact S1 is pressed, the YX24V power supply is output to the remote signaling detection unit and the surge high voltage detection unit. The conduction condition of the electronic switch U1 of the anti-displacement output unit must meet the condition that the voltage is higher than 100V. The normal remote signaling voltage is 24V. The surge high voltage detection unit does not work. The resistor R1 of the remote signaling detection unit receives the 24V remote signaling voltage. Pins 1 and 2 of the optocoupler DA1 are turned on, and pins 3 and 4 are turned on. The remote signaling signal is output at a low level to the electronic switch U1 of the anti-displacement output unit. The anti-displacement output unit outputs a normal low-level displacement signal.

[0023] In the lightning surge operation state, the varistor RV1 clamps the high voltage at 200V. The surge high voltage is output to the remote signaling detection unit and the surge high voltage detection unit. Upon receiving the 200V high voltage, the remote signaling detection unit outputs an abnormal remote signal shift to the electronic switch U1 of the anti-shift output unit. The 200V high voltage triggers the unidirectional TVS diode D1 of the surge high voltage detection unit. Through resistor R2, pins 1 and 2 of the optocoupler DA2 are turned on, and pins 3 and 4 are turned on. The surge signal outputs a low level to pin 6 of the electronic switch U1 of the anti-shift output unit. When pin 6 of the electronic switch U1 is low, the internal electronic switch switches to the channel from A2 to B. At this time, the abnormal shift signal of pin 1 (A1) of the electronic switch U1 will not be output to B, and the output signal remains unchanged.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A remote signaling anti-displacement circuit based on FTU lightning surge testing, characterized in that: Includes a surge generation unit, a remote signaling detection unit, a surge high voltage detection unit, and a displacement prevention output unit; The surge generation unit is used to generate lightning surge signals; The remote signaling detection unit is connected to the surge generation unit and the anti-displacement output unit. It is used to receive the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a low level to the anti-displacement output unit. In the presence of lightning and surge, it outputs an abnormal remote signaling displacement to the anti-displacement output unit. The surge high voltage detection unit is connected to the surge generation unit and the anti-displacement output unit respectively. It is used to receive the signal output by the surge generation unit. In the absence of lightning and surge, it outputs a surge-free high level to the anti-displacement output unit. In the presence of lightning and surge, it outputs a low level to the anti-displacement output unit. The anti-displacement output unit is connected to the remote signaling detection unit and the surge high voltage detection unit respectively. It is used to receive the signals output by the remote signaling detection unit and the surge high voltage detection unit. In the absence of lightning and surge, it outputs an invariant signal. In the presence of lightning and surge, it outputs a low-level displacement signal.

2. The remote signaling anti-displacement circuit based on FTU lightning surge testing according to claim 1, characterized in that: The surge generation unit includes a varistor RV1.

3. The remote signaling anti-displacement circuit based on FTU lightning surge testing according to claim 2, characterized in that: The remote signaling detection unit includes a contact S1, a resistor R1, an optocoupler DA1, and a resistor R4 connected in sequence. The contact S1 and the resistor R1 are respectively connected to the varistor RV1.

4. The remote signaling anti-displacement circuit based on FTU lightning surge testing according to claim 3, characterized in that: The surge high voltage detection unit includes a unidirectional TVS diode D1, a resistor R2, an optocoupler DA2, and a resistor R5 connected in sequence. The unidirectional TVS diode D1 is connected to a varistor RV1.

5. The remote signaling anti-displacement circuit based on FTU lightning surge testing according to claim 4, characterized in that: The anti-displacement output unit includes a connected electronic switch U1 and a resistor R6. The electronic switch is connected to optocouplers DA1 and DA2 respectively.

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