Fault detection circuit of industrial equipment function signal lamp

Abstract

The utility model relates to a fault detection circuit for functional signal lamps of industrial equipment, which comprises a plurality of signal lamps used for detecting each functional state of the equipment and a plurality of relays used for controlling the signal lamps, and contacts of the relays are positioned on signal indication loops of the corresponding signal lamps to form a main loop used for controlling the signal lamps. A detection switch is arranged on the main loop, one end of the detection switch is connected with the positive pole of a power supply, the other end of the detection switch is connected with the positive pole of each signal lamp through a plurality of detection bypasses for detecting signal lamp faults, each detection bypass is provided with a diode, the positive pole of each diode is connected with the detection switch, and the negative pole of each diode is connected with the positive pole of the corresponding signal lamp. The problems of equipment failure or production stagnation and inconvenient maintenance caused by difficult discovery of signal lamp failures are solved.

Description

Technical Field

[0001] The utility model relates to the field of signal lights, and particularly relates to a fault detection circuit for function signal lights of industrial equipment. Background Art

[0002] During the industrial production process, some key and important equipment is in a long-term running state. The functions of these equipment need to be carried out in an orderly manner according to production regulations. If there are faults in the functions, it will inevitably affect normal production. To ensure the reliable operation of the equipment, multiple signal lights are usually set on these important equipment, and the multiple signal lights are corresponding to the respective functions. When the controller of the equipment detects that there is a fault in a certain function of the equipment, it controls the signal light to light up to ensure that the equipment monitoring personnel can discover the fault problem and make a status indication. As Figure 2 shown, corresponding relays are respectively arranged on the lines of each signal light. The relay is electrically connected to the equipment controller. When the equipment controller detects a function fault, it sends a status signal, and the corresponding relay closes, and the signal light on the same line lights up to make a status indication of each function of the equipment.

[0003] However, this signal light circuit does not set up a special signal light status detection circuit to judge the quality of the signal lights. And the working environment of the equipment in the industrial field is relatively complex, and the indicator lights are prone to damage after working for a period of time. In this way, after the equipment status signal is sent, the corresponding signal light cannot indicate (light up), and the staff is very likely to misjudge the status of the equipment and cannot timely discover the fault problem existing in the equipment function, resulting in poor product quality or production stagnation, and even some unforeseen risks. Moreover, for this circuit without a signal light quality inspection loop, when troubleshooting or overhauling the signal lights in the case of the equipment working with faults, since the faulty signal lights do not indicate at this time, it can only use a multimeter to test the voltage at both ends of the signal lights to determine whether the signal lights are damaged one by one. This method of detecting signal lights is relatively laborious and inconvenient for overhaul. Summary of the Invention

[0004] The purpose of the utility model is to provide a fault detection circuit for function signal lights of industrial equipment aiming at the deficiencies existing in the prior art, and solve the problems that it is not easy to find signal light faults, resulting in equipment faults or production stagnation, and inconvenient overhaul.

[0005] The object of the present utility model is achieved by the following solution: A fault detection circuit for the function signal lights of industrial equipment includes a plurality of signal lights for detecting the functional states of the equipment, and a plurality of relays for controlling the signal lights. The contacts of each relay are located on the signal indication loop of the corresponding signal light, forming a main loop for controlling the signal light. A detection switch is arranged on the main loop. One end of the detection switch is connected to the positive pole of the power supply, and the other end is connected to the positive poles of each signal light through a plurality of detection bypasses for detecting the faults of the signal lights. Diodes are arranged on each detection bypass. The anodes of the diodes are connected to the detection switch, and the cathodes are connected to the positive poles of the signal lights.

[0006] Preferably, the power supply of the fault detection circuit is a 24V DC power supply.

[0007] Preferably, the model of the diode is 1N4007.

[0008] Preferably, the signal lights are arranged on the equipment control cabinet, and the relays are arranged in the equipment control cabinet.

[0009] Preferably, the detection switch is a push-button switch arranged on the equipment control cabinet.

[0010] Further preferably, the model of the detection switch is XB2BA11C.

[0011] By adopting the above solution, a detection bypass is added to the signal indicator loop of the equipment, and the fault states of each signal light can be detected without major modifications. The circuit structure is simple and the detection cost is low. Utilizing the single-phase conduction performance of the diode to isolate the original circuit of the equipment and avoid interfering with the original circuit. The fault states of each signal light can be detected through the detection switch, and the operation is simple. Moreover, the working states of each signal indicator can be detected at any time when the equipment is powered on. When the equipment is in normal working state, it does not affect the normal operation of the equipment, and the working state of the signal light loop of the equipment function can be mastered at any time, avoiding equipment failures and even production accidents caused by the failure of the signal light not being able to correctly feedback the state of the equipment in time.

[0012] The present utility model will be further described below in conjunction with the specification drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the circuit diagram of the present utility model;

[0014] Figure 2 is the circuit diagram of the prior art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] See Figures 1 to 2, A fault detection circuit for the function signal lights of industrial equipment, including multiple signal lights for detecting the functional states of the equipment and multiple relays for controlling the signal lights. The contacts of each relay are located on the signal indication loop of the corresponding signal light to form a main loop for controlling the signal lights. The relays are controlled by the equipment controller. When the controller detects an abnormality in the equipment function, it controls the corresponding relay to close to make the signal light on the consent loop light up, giving a functional fault indication. A detection switch 1SB is provided on the main loop. One end of the detection switch 1SB is connected to the positive pole of the power supply, and the other end is connected to the positive poles of each signal light through multiple detection bypasses for detecting signal light faults. Diodes are provided on each detection bypass. The anode of the diode is connected to the detection switch 1SB, and the cathode is connected to the positive pole of the signal light.

[0016] The power supply of the fault detection circuit uses a DC power supply of less than or equal to 220V. In this embodiment, the power supply uses a 24V DC power supply. The signal lights are arranged on the equipment control cabinet, and the relays are arranged in the equipment control cabinet; the detection switch 1SB is arranged on the equipment control cabinet using a push-button switch.

[0017] In this embodiment, the model of the diode is 1N4007, its forward conduction voltage is 1.1V, reverse peak voltage is 1000V, and current is 1A; the model of the detection switch 1SB is XB2BA11C; the model of the signal light is XB2BVB3LC, and the indication color is green; the model of the relay is MY2NJ DC24V.

[0018] In this embodiment, the device is respectively provided with seven signal indication circuits corresponding to seven functions, and each signal indication circuit is respectively provided with a detection bypass. The first signal indication circuit includes a relay 1ZJ and a signal lamp 1HL. The cathode of the signal lamp 1HL is connected to the negative pole of the power supply, and the anode of the signal lamp 1HL is connected to the positive pole of the power supply through the contact of the relay 1ZJ. Moreover, the anode of the signal lamp 1HL is connected to the positive pole of the power supply through a diode 1D via a detection switch 1SB; the second signal indication circuit includes a relay 2ZJ and a signal lamp 2HL. The cathode of the signal lamp 2HL is connected to the negative pole of the power supply, and the anode of the signal lamp 2HL is connected to the positive pole of the power supply through the contact of the relay 2ZJ. Moreover, the anode of the signal lamp 1HL is connected to the positive pole of the power supply through a diode 2D via a detection switch 1SB; the third signal indication circuit includes a relay 3ZJ and a signal lamp 3HL. The cathode of the signal lamp 3HL is connected to the negative pole of the power supply, and the anode of the signal lamp 3HL is connected to the positive pole of the power supply through the contact of the relay 3ZJ. Moreover, the anode of the signal lamp 3HL is connected to the positive pole of the power supply through a diode 3D via a detection switch 1SB; the fourth signal indication circuit includes a relay 4ZJ and a signal lamp 4HL. The cathode of the signal lamp 4HL is connected to the negative pole of the power supply, and the anode of the signal lamp 4HL is connected to the positive pole of the power supply through the contact of the relay 4ZJ. Moreover, the anode of the signal lamp 4HL is connected to the positive pole of the power supply through a diode 4D via a detection switch 1SB; the fifth signal indication circuit includes a relay 5ZJ and a signal lamp 5HL. The cathode of the signal lamp 5HL is connected to the negative pole of the power supply, and the anode of the signal lamp 5HL is connected to the positive pole of the power supply through the contact of the relay 5ZJ. Moreover, the anode of the signal lamp 5HL is connected to the positive pole of the power supply through a diode 5D via a detection switch 1SB; the sixth signal indication circuit includes a relay 6ZJ and a signal lamp 6HL. The cathode of the signal lamp 6HL is connected to the negative pole of the power supply, and the anode of the signal lamp 6HL is connected to the positive pole of the power supply through the contact of the relay 6ZJ. Moreover, the anode of the signal lamp 6HL is connected to the positive pole of the power supply through a diode 6D via a detection switch 1SB; the seventh signal indication circuit includes a relay 7ZJ and a signal lamp 7HL. The cathode of the signal lamp 7HL is connected to the negative pole of the power supply, and the anode of the signal lamp 7HL is connected to the positive pole of the power supply through the contact of the relay 7ZJ. Moreover, the anode of the signal lamp 7HL is connected to the positive pole of the power supply through a diode 7D via a detection switch 1SB.

[0019] Working principle:

[0020] When the device is working and all functions are normal, the relays on each signal indication circuit are in an open state, the signal indication circuit is an open circuit, and the signal lamp does not light. When the device control cabinet detects an abnormal function, it controls the relay corresponding to the function to close, and the signal lamp corresponding to the abnormal function lights up for indication;

[0021] Before the equipment is put into production or during normal operation, check the failure conditions of each signal lamp to avoid misjudgment of the equipment status by the staff due to signal lamp failure during work production, resulting in production accidents; when checking the signal lamp, press the detection switch 1SB to connect the detection bypass, the diode circuits corresponding to each signal lamp are connected, the signal lamp in the failure state does not light, and the signal lamp in the normal state lights, so as to quickly identify the faulty signal lamp, be able to eliminate the faulty signal lamp in advance and take corresponding countermeasures; moreover, during maintenance, it is very easy to determine the faulty signal lamp, which is convenient for maintenance and replacement of the faulty signal lamp, saving time and no longer needing to use a multimeter to check one by one.

[0022] Compared with the prior art, the circuit of the present utility model can detect the failure conditions of the signal lamp at any time, avoiding the inability to timely feedback the correct state of the equipment due to signal lamp failure; at the same time, the failure state of each signal lamp can be detected through the detection switch, and the operation is simple.

[0023] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model fall within the protection scope of the present utility model.

Claims

1. A fault detection circuit for a functional signal lamp of an industrial device, comprising a plurality of signal lamps for detecting the functional status of the device, and a plurality of relays for controlling the signal lamps, wherein the contact of each relay is located on the signal indication circuit of the corresponding signal lamp, forming a main circuit for controlling the signal lamp, characterized in that: A detection switch (1SB) is provided on the main circuit, one end of the detection switch (1SB) is connected to the positive electrode of the power supply, and the other end is connected to the positive electrode of each signal lamp through a plurality of detection bypasses for detecting signal lamp failures, and a diode is provided on each detection bypass, the anode of the diode is connected to the detection switch (1SB), and the cathode is connected to the positive electrode of the signal lamp.

2. The fault detection circuit of the industrial equipment function signal light according to claim 1, characterized in that: The power supply of the fault detection circuit is 24V DC power supply.

3. The fault detection circuit of the industrial equipment function signal light according to claim 1, characterized in that: The diode model is 1N4007.

4. The fault detection circuit of the industrial equipment function signal light according to claim 1, characterized in that: The signal lamp is arranged on the equipment control cabinet, and the relay is arranged in the equipment control cabinet.

5. The fault detection circuit of the industrial equipment function signal light according to claim 1, characterized in that: The detection switch (1SB) is arranged on the equipment control cabinet in the form of a push button switch.

6. The fault detection circuit of the industrial equipment function signal lamp according to claim 5, characterized in that: The detection switch (1SB) is of model XB2BA11C.

Images