Fo fault detection circuit
By introducing LED lights and alarms into the fo fault detection circuit, real-time feedback of circuit status is achieved, the problem of low detection efficiency in the prior art is solved, and the efficiency of fault detection is improved.
Patent Information
- Application Number
- CN202421772834.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing fo-side circuit fault detection method requires continuous detection of the circuit voltage and is relatively low in efficiency.
A fo fault detection circuit is designed. By installing LED lights and sirens at the fault output end, the state of the circuit is represented by the LED lights and the sound of the alarm, thereby avoiding direct measurement of voltage.
Through real-time feedback from LED lights and alarms, the fault status of the circuit can be quickly judged, which improves detection efficiency and reduces dependence on voltage detection.
Smart Images
Figure CN222965360U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit detection, in particular to a fo fault detection circuit. Background Art
[0002] When the Fo terminal circuit outputs normal current, it usually outputs a low level. However, when there is a fault in the circuit, it will output a high level, resulting in the circuit being unable to be used normally and interfering with normal operation.
[0003] When detecting the fault of the existing Fo terminal circuit, the user needs to continuously detect the voltage of the circuit to determine whether the circuit is normal. This detection method has low efficiency. Therefore, we propose a fo fault detection circuit. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art. When detecting the fault of the existing Fo terminal circuit, the user needs to continuously detect the voltage of the circuit to determine whether the circuit is normal. This detection method has low efficiency.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A fo fault detection circuit includes a fault output terminal. An LED lamp is installed on one side of the fault output terminal. A positive wire and a negative wire are connected between the fault output terminal and the LED lamp. A low-voltage DC power supply is connected to the outside of the fault output terminal. The low-voltage DC power supply is equipped with a switch button. A current-limiting resistor is connected between the circuit of the fault output terminal and the LED lamp. An alarm is externally connected to the LED lamp.
[0007] As a preferred scheme of the utility model, the output voltage of the fault output terminal has two states of high and low levels in different states. A plastic shell is sleeved outside the fault output terminal.
[0008] As a preferred scheme of the utility model, the LED lamp has two states of lighting and extinguishing. The positive and negative poles of the LED lamp both output high levels. The positive wire is connected to the positive pole of the LED lamp. The negative wire is connected to the negative pole of the LED lamp and the port of the fault output terminal.
[0009] As a preferred scheme of the utility model, the voltage of the low-voltage DC power supply is 12V, and the switch button is a sliding switch.
[0010] As a preferred scheme of the utility model, the resistance value of the current-limiting resistor is 10K, and the current-limiting resistor is connected to the positive pole of the LED lamp.
[0011] As a preferred embodiment of the present utility model, the alarm is a buzzer alarm, and the alarm is electrically connected to the LED lamp.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] In the present utility model, through the design of the detection structure, when detecting the circuit, the LED lamp and the alarm can be used to display the circuit condition, making the circuit fault condition clearer without having to measure the voltage, and improving the detection efficiency. Description of the Drawings
[0014] Figure 1 It is a schematic diagram of the overall structure of a fo fault detection circuit provided by the present utility model;
[0015] Figure 2 It is a schematic diagram of the circuit structure of a fo fault detection circuit provided by the present utility model.
[0016] Legend: 1. Fault output terminal; 2. LED lamp; 201. Positive wire connection; 202. Negative wire connection; 3. Low-voltage DC power supply; 4. Switch button; 5. Current-limiting resistor; 6. Alarm. Specific Embodiments
[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.
[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0021] Embodiment 1
[0022] As Figure 1-2 shown, this utility model provides a technical solution: a fo fault detection circuit, including a fault output terminal 1. On one side of the fault output terminal 1, an LED lamp 2 is installed. A positive wire 201 and a negative wire 202 are connected between the fault output terminal 1 and the LED lamp 2. Outside the fault output terminal 1, a low-voltage DC power supply 3 is connected. The low-voltage DC power supply 3 is equipped with a switch button 4. A current-limiting resistor 5 is connected between the circuit of the fault output terminal 1 and the LED lamp 2. An alarm 6 is externally connected to the LED lamp 2. The alarm 6 sounds synchronously when the LED lamp 2 lights up and makes no sound when the LED lamp 2 goes out.
[0023] Embodiment 2
[0024] As Figure 1-2 shown, the output voltage of the fault output terminal 1 has two states of high and low levels in different states. A plastic shell is sleeved outside the fault output terminal 1 to protect the circuit from being damaged during testing. The LED lamp 2 has two states of lighting up and going out. The positive and negative poles of the LED lamp 2 both output high levels. The positive wire 201 is connected to the positive pole of the LED lamp 2. The negative wire 202 is connected to the negative pole of the LED lamp 2 and the port of the fault output terminal 1. The voltage of the low-voltage DC power supply 3 is 12V. The switch button 4 is a sliding switch for convenient control. The resistance value of the current-limiting resistor 5 is 10K. The current-limiting resistor 5 is connected to the positive pole of the LED lamp 2. The alarm 6 is a buzzer alarm. The alarm 6 is electrically connected to the LED lamp 2.
[0025] The working process of the present utility model: When using a fo fault detection circuit for circuit detection work, the voltage output by the fault output terminal 1 is in two states of high and low levels when the circuit is in different states. Now, an external 12V low-voltage DC power supply 3 is connected, a 10K ohm current-limiting resistor 5 and an LED lamp 2 are connected inside the circuit. The positive output voltage reaches the positive electrode of the LED lamp 2 through the current-limiting resistor. The negative electrode of the LED lamp 2 is connected to the circuit fault output terminal 1. When the circuit is working normally, the fault output terminal 1 outputs a high level, and both the positive and negative electrodes of the LED lamp 2 output a high level, so the LED lamp 2 will not light up. When there is a fault in the circuit, the fault output terminal 1 will output a low level, and a voltage difference will be generated between the positive and negative electrodes of the LED lamp 2. At this time, the LED 2 will light up, and its current flows into the alarm 6, causing the alarm 6 to sound. Through this test, the output state of the FO fault circuit can be directly judged without measuring the voltage again.
[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A fo fault detection circuit, comprising a fault output terminal (1), characterized in that: An LED lamp (2) is installed on one side of the fault output end (1), a positive electrode connection (201) and a negative electrode connection (202) are connected between the fault output end (1) and the LED lamp (2), a low-voltage DC power supply (3) is connected to the outside of the fault output end (1), a switch button (4) is installed on the low-voltage DC power supply (3), a current limiting resistor (5) is connected between the circuit of the fault output end (1) and the LED lamp (2), and an alarm (6) is externally connected to the LED lamp (2).
2. A FO fault detection circuit according to claim 1, characterized in that: The output voltage of the fault output terminal (1) in different states is in two states: high level and low level. The fault output terminal (1) is externally covered with a plastic shell.
3. A FO fault detection circuit according to claim 1, characterized in that: The LED lamp (2) is divided into two states: on and off; the positive and negative electrodes of the LED lamp (2) are both high-level outputs; the positive electrode wiring (201) is connected to the positive electrode of the LED lamp (2); and the negative electrode wiring (202) is connected to the LED lamp (2) and the fault output terminal (1).
4. A FO fault detection circuit according to claim 1, characterized in that: The voltage of the low-voltage DC power supply (3) is 12V, and the switch button (4) is a sliding switch.
5. The FO fault detection circuit according to claim 1, characterized in that: The resistance value of the current limiting resistor (5) is 10K, and the current limiting resistor (5) is connected to the positive electrode of the LED lamp (2).
6. A FO fault detection circuit according to claim 1, characterized in that: The alarm (6) is a buzzer alarm, and the alarm (6) is electrically connected to the LED lamp (2).