A numerical control system fault area detection circuit

Abstract

The utility model relates to circuit detection technical field, especially in a kind of numerical control system fault area detection circuit, including voltage transformation module and main circuit, the voltage transformation module is used to input the current of different voltage grades for main circuit, access module and voltage stabilizing module are sequentially connected in parallel on the main circuit, the access module is used to realize the electrical connection of the device to be detected and main circuit, the voltage stabilizing module is used to stabilize circuit voltage, fixed resistor R1, variable resistor R2 and pilot lamp W1 are connected in series on the main circuit, because the circuit board state of different regions of a whole numerical control system needs to be detected, then relatively need to access all circuit boards on the main circuit, and need to guarantee that the device is not short-circuited when no circuit board is accessed, so fixed resistor R1, variable resistor R2 and pilot lamp W1 need to be connected in series on the main circuit, pilot lamp W1 is used to indicate whether the main circuit is in pass-through state, fixed resistor R1 and variable resistor R2 are used to protect main circuit.

Description

Technical Field

[0001] This utility model relates to the field of circuit testing technology, and in particular to a fault area detection circuit for CNC systems. Background Technology

[0002] As the core control unit of modern industrial equipment, the stability and reliability of CNC systems directly affect the overall efficiency and safety of the equipment. In practical applications, CNC systems typically consist of multiple functional areas or circuit boards, each responsible for different control tasks. Due to the complex system structure and numerous circuit boards, quickly locating the faulty area becomes a key challenge in the maintenance process once a malfunction occurs.

[0003] Currently, most existing circuit testing technologies employ single-channel or fixed-load testing methods. These solutions have the following significant drawbacks: They cannot adapt to parallel testing across multiple areas: Traditional testing circuits typically only test a single circuit board or area, making it difficult to simultaneously monitor the independent and parallel status of multiple circuit boards connected to the system, resulting in low testing efficiency. They lack effective protection mechanisms: Improper operation or inappropriate resistance matching during connection or disconnection of the circuit board under test can easily damage the main circuit or the circuit board due to current surges or short circuits. Voltage fluctuations affect testing accuracy: Different circuit boards in CNC systems have high requirements for the stability of their operating voltage, but existing testing circuits often lack effective voltage regulation and filtering mechanisms, leading to unreliable test results. They lack temperature monitoring and protection: Circuit boards often experience localized overheating under fault conditions, and existing technologies rarely integrate temperature sensing and automatic protection functions, posing safety hazards.

[0004] Therefore, there is an urgent need for a circuit solution that can safely, efficiently, and stably test multiple areas of the circuit board in a CNC system, in order to improve the convenience and reliability of system maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a fault area detection circuit for CNC systems to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A fault area detection circuit for a CNC system includes a transformer module and a main circuit. The transformer module is used to input currents of different voltage levels into the main circuit. An access module and a voltage regulator module are connected in parallel on the main circuit. The access module is used to realize the electrical connection between the device under test and the main circuit. The voltage regulator module is used to stabilize the circuit voltage. A fixed resistor R1, a variable resistor R2, and an indicator light W1 are connected in series on the main circuit.

[0008] By adopting the above technical solution, since it is necessary to detect the status of the circuit boards in different areas of the entire CNC system, it is necessary to connect all the circuit boards to the main circuit. It is also necessary to ensure that the device does not short-circuit when no circuit boards are connected. Therefore, a fixed resistor R1, a variable resistor R2 and an indicator light W1 need to be connected in series in the main circuit. The indicator light W1 is used to indicate whether the main circuit is in a closed state. The fixed resistor R1 and the variable resistor R2 are used to protect the main circuit and control the total resistance of the main circuit.

[0009] In a further embodiment, the access module consists of multiple parallel branches, each of which is equipped with a sub-control switch.

[0010] By adopting the above technical solution, the branch control switch is used to control whether the circuit board connected to the branch is connected to the main circuit, so as to realize branch control and independent detection.

[0011] In a further embodiment, the voltage regulator circuit includes a filter, a Zener diode, and a transistor. One end of the Zener diode is connected to the main circuit, and the other end of the Zener diode is connected to the base of the transistor. One end of the filter is connected to the main circuit, and the other end of the filter is connected between the Zener diode and the transistor. The collector of the transistor is connected to the input terminal of the main circuit, and the emitter of the transistor is connected to the output terminal of the main circuit. The access module is connected in parallel in the circuit after the fixed resistor R1 of the main circuit, and the access module is located in the circuit before the connection between the emitter and the main circuit.

[0012] By employing the above technical solution, the filter removes high-frequency noise and voltage fluctuations in the main circuit, the Zener diode provides a stable reference voltage, and together with the transistor, forms a feedback regulation loop. This allows the transistor to dynamically adjust the voltage difference between its collector and emitter based on the base voltage, thereby achieving automatic stabilization of the main circuit's output voltage. The access module is located after the fixed resistor R1, allowing the circuit board under test to be connected before voltage regulation, avoiding voltage surges caused by sudden load changes and further improving the reliability and safety of the testing process.

[0013] In a further embodiment, the variable resistor R2 and the indicator light W1 are both installed on the circuit after the connection between the main circuit and the emitter, and a manual switch is provided at the connection between the variable resistor R2 and the indicator light W1 and the main circuit.

[0014] By adopting the above technical solution, during operation, it is necessary to close the manual switch to check whether the circuit is powered on, and then adjust the variable resistor R2 to the maximum resistance value before connecting the circuit board to be tested through the access circuit. After all the circuit boards are connected, close the branch control switch of the circuit board to be tested, and then slowly reduce the resistance value of the variable resistor R2. It is necessary to pay attention to the status of the circuit board at all times. After the test is completed, adjust the resistance value of the variable resistor R2 to the maximum value and then disconnect the branch control switch.

[0015] In a further embodiment, a temperature-sensing resistor R3 is connected in parallel with the main circuit.

[0016] By adopting the above technical solution, the temperature-sensitive resistor can be attached to the chip on the circuit board to be tested, and is used to block the main circuit current when the chip heats up rapidly.

[0017] In a further embodiment, two branch control switches are provided on each branch.

[0018] By adopting the above technical solution, the operating procedures can be standardized to avoid the situation where there is only one control switch and the resistance value of the variable resistor R2 is incorrect when it is opened or closed, which could burn out the circuit board.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. A fixed resistor R1, a variable resistor R2, and an indicator light W1 are connected in series in the main circuit. The indicator light W1 is used to indicate whether the main circuit is in a closed state. The fixed resistor R1 and the variable resistor R2 are used to protect the main circuit and control the total resistance of the main circuit. Attached Figure Description

[0021] Figure 1 This is a simplified circuit diagram of this utility model. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0024] Example 1:

[0025] like Figure 1 As shown, a fault area detection circuit for a CNC system includes a transformer module and a main circuit. The transformer module is used to input currents of different voltage levels to the main circuit. An access module and a voltage regulator module are connected in parallel on the main circuit. The access module is used to electrically connect the device under test to the main circuit, and the voltage regulator module is used to stabilize the circuit voltage. A fixed resistor R1, a variable resistor R2, and an indicator light W1 are connected in series on the main circuit. The access module consists of multiple parallel branches, each with a separate control switch. The voltage regulator circuit includes a filter, a Zener diode, and a transistor. One end of the Zener diode is connected to the main circuit, and the other end is connected to the base of the transistor. One end of the filter is connected to the main circuit, and the other end is connected between the Zener diode and the transistor. The collector of the transistor is connected to... At the input terminal of the main circuit, the emitter of the transistor is connected to the output terminal of the main circuit. The access module is connected in parallel to the circuit after the fixed resistor R1 in the main circuit, and is located in the circuit before the connection between the emitter and the main circuit. The variable resistor R2 and the indicator light W1 are both installed in the circuit after the connection between the main circuit and the emitter. A manual switch is provided at the connection between the variable resistor R2 and the indicator light W1 and the main circuit. A temperature sensing resistor R3 is connected in parallel to the main circuit. Each branch has two control switches. The filter removes high-frequency noise and voltage fluctuations in the main circuit. The Zener diode provides a stable reference voltage and forms a feedback regulation loop with the transistor, allowing the transistor to dynamically adjust the voltage difference between the collector and emitter according to the base voltage, thereby achieving automatic stabilization of the main circuit output voltage. The access module is located after the fixed resistor R1, allowing the circuit board to be tested to be connected before voltage stabilization, avoiding voltage surges caused by sudden load changes, and further improving the reliability and safety of the testing process.

[0026] Specific implementation process: Since it is necessary to detect the status of circuit boards in different areas of the entire CNC system, it is necessary to connect all circuit boards to the main circuit. It is also necessary to ensure that the device does not short-circuit when no circuit boards are connected. Therefore, a fixed resistor R1, a variable resistor R2 and an indicator light W1 are connected in series in the main circuit. The indicator light W1 is used to indicate whether the main circuit is in a closed state. The fixed resistor R1 and the variable resistor R2 are used to protect the main circuit and control the total resistance of the main circuit.

[0027] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A fault area detection circuit for a CNC system, characterized in that: It includes a transformer module and a main circuit. The transformer module is used to input current of different voltage levels into the main circuit. The main circuit has an access module and a voltage regulator module connected in parallel in sequence. The access module is used to realize the electrical connection between the device under test and the main circuit. The voltage regulator module is used to stabilize the circuit voltage. The main circuit has a fixed resistor R1, a variable resistor R2 and an indicator light W1 connected in series.

2. The fault area detection circuit for a CNC system according to claim 1, characterized in that: The access module consists of multiple parallel branches, each of which is equipped with a sub-control switch.

3. The fault area detection circuit for a CNC system according to claim 1, characterized in that: The voltage regulation module includes a filter, a Zener diode, and a transistor. One end of the Zener diode is connected to the main circuit, and the other end of the Zener diode is connected to the base of the transistor. One end of the filter is connected to the main circuit, and the other end of the filter is connected between the Zener diode and the transistor. The collector of the transistor is connected to the input terminal of the main circuit, and the emitter of the transistor is connected to the output terminal of the main circuit. The input module is connected in parallel in the circuit after the fixed resistor R1 of the main circuit, and the input module is located in the circuit before the connection between the emitter and the main circuit.

4. The fault area detection circuit for a CNC system according to claim 3, characterized in that: The variable resistor R2 and the indicator light W1 are both installed on the circuit after the connection between the main circuit and the emitter. A manual switch is provided at the connection between the variable resistor R2 and the indicator light W1 and the main circuit.

5. A fault area detection circuit for a CNC system according to claim 1, characterized in that: A temperature-sensing resistor R3 is connected in parallel on the main circuit.

6. A fault area detection circuit for a CNC system according to claim 2, characterized in that: Two control switches are provided on each branch.

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