Opto-coupler test circuit and method

Abstract

The application relates to a photoelectric coupler test circuit and a test method, which comprises a power supply part for providing electric energy, a switch part for controlling the electric energy supply of the power supply part to the outside world, the switch part being connected with the power supply part, a connecting part for connecting a tester, a light-emitting part for detecting a fault point of a frequency converter, the first end of the light-emitting part being connected with the first end of the switch part and the second end being connected with the first end of the connecting part, an adjusting part for adjusting the light-emitting brightness of the light-emitting part, the first end of the adjusting part being connected with the second end of the switch part and the second end being connected with the second end of the connecting part. The photoelectric coupler test circuit and the test method can quickly determine the fault point of the frequency converter, facilitate timely replacement of the frequency converter, greatly reduce the production cost, and simultaneously increase the production timeliness.

Description

Technical Field

[0001] This application relates to the field of power systems, and in particular to a test circuit and test method for an optocoupler. Background Technology

[0002] In the power system sector, frequency converters have long been a mainstay of production because they can easily and quickly adjust stroke and sprint, as well as frequency to meet production requirements. They also achieve certain energy-saving effects when applied to power lines. However, when a frequency converter malfunctions (most often due to problems with the optocoupler), it is generally simply replaced, and then not reused. This significantly increases production costs and reduces the value of restoring its use. This also contradicts current policies on cost-saving and reusing old equipment, making the resolution of this problem urgent. Summary of the Invention

[0003] To address, or at least partially address, the aforementioned technical problems, this application provides an optocoupler test circuit and test method.

[0004] In a first aspect, this application provides an optocoupler test circuit, comprising:

[0005] The power supply department is responsible for providing electrical energy.

[0006] A switching unit is used to control the power supply from the power supply unit to the outside; the switching unit is connected to the power supply unit.

[0007] Connecting part, used to connect the tester;

[0008] A light-emitting part is used to detect fault points in the frequency converter; the first end of the light-emitting part is connected to the first end of the switching part and the second end is connected to the first end of the connecting part.

[0009] An adjustment section is used to adjust the brightness of the light-emitting part; the first end of the adjustment section is connected to the second end of the switch section, and the second end is connected to the second end of the connection section.

[0010] Preferably, the power supply unit includes a power source, the two ends of which are respectively connected to the two ends of the switch unit.

[0011] Preferably, the switching unit includes a double-pole switch, the two ends of which are respectively connected to the two ends of the power supply in the power supply unit.

[0012] Preferably, the connection part includes: a diode, a phototransistor, and an optocoupler, wherein the anode of the diode is connected to the second end of the adjustment part, the cathode of the diode is connected to the first end of the switching part, the emitter of the phototransistor is connected to the second end of the light-emitting part, the collector of the phototransistor is connected to the second end of the adjustment part, and the optocoupler is connected in parallel with the phototransistor.

[0013] Preferably, the light-emitting part includes: a light-emitting diode, the anode of the light-emitting diode being connected to the first end of the switching part, and the cathode of the light-emitting diode being connected to the first end of the connecting part.

[0014] Preferably, the adjusting part includes a sliding rheostat, the first end of which is connected to the second end of the switching part and the second end is connected to the first end of the connecting part.

[0015] Preferably, it further includes a pressure dividing section, which is connected in parallel with the adjusting section.

[0016] Preferably, the voltage divider includes a resistor, the two ends of which are connected to the two ends of the adjustment section.

[0017] Secondly, this application provides a method for testing an optocoupler, implemented based on any of the optocoupler testing circuits described above, the method comprising the following steps:

[0018] Connect the tester to the frequency converter;

[0019] Connect the tester to the connecting part;

[0020] Move the switch to the first position to supply power to the light-emitting part;

[0021] Observe the light emission of the light-emitting part;

[0022] When the light-emitting part stops emitting light, the switch is toggled to the second position so that the power supply part supplies power to the light-emitting part.

[0023] Observe the light emission of the light-emitting part;

[0024] Adjust the adjustment unit when the brightness of the light-emitting part is lower than the preset brightness.

[0025] The technical solutions provided in this application have the following advantages compared with the prior art:

[0026] This application provides an optocoupler test circuit and test method that can quickly determine the fault point of the frequency converter, facilitate timely replacement of the frequency converter, greatly reduce production costs, and increase production timeliness. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a circuit diagram of an optocoupler test circuit provided in an embodiment of the present invention;

[0030] Figure 2 This is a pin diagram of the tester in an optocoupler test circuit provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Figure 1 This is a schematic diagram of an optocoupler test circuit provided in an embodiment of this application.

[0033] like Figure 1 In this embodiment of the application, the present invention provides an optocoupler test circuit, comprising:

[0034] The power supply department is responsible for providing electrical energy.

[0035] A switching unit is used to control the power supply from the power supply unit to the outside; the switching unit is connected to the power supply unit.

[0036] Connecting part, used to connect the tester;

[0037] A light-emitting part is used to detect fault points in the frequency converter; the first end of the light-emitting part is connected to the first end of the switching part and the second end is connected to the first end of the connecting part.

[0038] An adjustment section is used to adjust the brightness of the light-emitting part; the first end of the adjustment section is connected to the second end of the switch section, and the second end is connected to the second end of the connection section.

[0039] When using this optocoupler test circuit to test the frequency converter, first connect the tester to the frequency converter, and then connect the tester to the connection part; at this time, move the switch to the first position to supply power to the light-emitting part, and observe the light emission of the light-emitting part; when the light-emitting part stops emitting light, move the switch to the second position to supply power to the light-emitting part, and observe the light emission of the light-emitting part; then, when the brightness of the light-emitting part is lower than the preset brightness, adjust the adjustment part.

[0040] like Figure 1 In this embodiment of the application, the power supply unit includes a power source, the two ends of which are respectively connected to the two ends of the switch unit.

[0041] In the embodiments of this application, the rated voltage of the power supply is 3V-5V.

[0042] like Figure 1 In this embodiment of the application, the switching unit includes a double-pole switch, the two ends of which are respectively connected to the two ends of the power supply in the power supply unit.

[0043] Specifically, the double-pole switch has a first position and a second position. When the switch is switched to the first position, the power supply unit is electrically connected to the outside world; when the switch is switched to the second position, the power supply unit is electrically disconnected from the outside world.

[0044] like Figure 1 In this embodiment of the application, the connection part includes: a diode, a phototransistor, and an optocoupler, wherein the anode of the diode is connected to the second end of the adjustment part, the cathode of the diode is connected to the first end of the switching part, the emitter of the phototransistor is connected to the second end of the light-emitting part, the collector of the phototransistor is connected to the second end of the adjustment part, and the optocoupler is connected in parallel with the phototransistor.

[0045] like Figure 1 In this embodiment of the application, the light-emitting part includes: a light-emitting diode, the anode of the light-emitting diode is connected to the first end of the switching part, and the cathode of the light-emitting diode is connected to the first end of the connecting part.

[0046] Specifically, when using this circuit, first connect the four clips of the tester (such as...) Figure 2 )according to Figure 1Connect the corresponding connecting posts 1, 2, 3, and 4. Then press the power button and toggle the double-pole switch to the first position (position 1). Observe the LED. If the LED is not lit, toggle the double-pole switch to the second position (position 2) and observe the LED again. If it is dimly lit, adjust the sliding rheostat to adjust the LED brightness. This can quickly pinpoint the fault. Whether the fault is here or not, replace the inverter promptly. After replacement, repair and reuse it. This greatly reduces production costs and increases production efficiency. Finally, complete the production task, save costs, and increase the reusability of the inverter cabinet through repair and reuse.

[0047] like Figure 1 In this embodiment of the application, the adjusting part includes: a sliding rheostat, the first end of which is connected to the second end of the switching part and the second end is connected to the first end of the connecting part.

[0048] In this embodiment of the application, the range of the sliding rheostat is 1 to 1000 Ω.

[0049] like Figure 1 In this embodiment of the application, it further includes a pressure dividing section, which is connected in parallel with the adjusting section.

[0050] In this embodiment, since the adjustment part uses a sliding rheostat, when the resistance of the sliding rheostat connected in the circuit is too small, it will cause the current to be too large and may burn out the electrical appliances in the circuit. Therefore, a voltage divider needs to be connected at this time to bear a certain voltage, thereby reducing the current in the entire circuit and protecting the electrical appliances.

[0051] like Figure 1 In this embodiment of the application, the voltage divider includes a resistor, the two ends of which are connected to the two ends of the adjustment part.

[0052] In this embodiment, the resistance is 1000Ω.

[0053] This application provides an optocoupler test circuit and test method that can quickly determine the fault point of the frequency converter, facilitate timely replacement of the frequency converter, greatly reduce production costs, and increase production timeliness.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An opto-coupler test circuit, comprising: include: The power supply department is responsible for providing electrical energy. A switching unit is used to control the power supply from the power supply unit to the outside; the switching unit is connected to the power supply unit. Connecting part, used to connect the tester; A light-emitting part is used to detect fault points in the frequency converter; the first end of the light-emitting part is connected to the first end of the switching part and the second end is connected to the first end of the connecting part. An adjustment section is used to adjust the brightness of the light-emitting part; the first end of the adjustment section is connected to the second end of the switch section and the second end is connected to the second end of the connection section. The connection part includes: a diode, a phototransistor, and an optocoupler, wherein the anode of the diode is connected to the second end of the adjustment part, the cathode of the diode is connected to the first end of the switching part, the emitter of the phototransistor is connected to the second end of the light-emitting part, the collector of the phototransistor is connected to the second end of the adjustment part, and the optocoupler is connected in parallel with the phototransistor; The adjusting part includes: a sliding rheostat, the first end of which is connected to the second end of the switching part and the second end is connected to the first end of the connecting part; It also includes: a pressure dividing section, which is connected in parallel with the adjusting section; The voltage divider includes a resistor, the two ends of which are connected to the two ends of the adjustment section.

2. The optocoupler test circuit of claim 1, wherein, The power supply unit includes a power source, the two ends of which are respectively connected to the two ends of the switch unit.

3. The optocoupler test circuit according to claim 1, characterized in that, The switching unit includes a double-pole switch, the two ends of which are respectively connected to the two ends of the power supply in the power supply unit.

4. The optocoupler test circuit according to claim 1, characterized in that, The light-emitting part includes a light-emitting diode, the anode of which is connected to the first end of the switching part, and the cathode of which is connected to the first end of the connecting part.

5. A method for testing an optocoupler, characterized in that, Based on the optocoupler test circuit as described in any one of claims 1-4, the method includes the following steps: Connect the tester to the frequency converter; Connect the tester to the connecting part; Move the switch to the first position to supply power to the light-emitting part; Observe the light emission of the light-emitting part; When the light-emitting part stops emitting light, the switch is toggled to the second position so that the power supply part supplies power to the light-emitting part. Observe the light emission of the light-emitting part; Adjust the adjustment unit when the brightness of the light-emitting part is lower than the preset brightness.

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