A relay LED indicator light detection device

Abstract

The present invention discloses a relay LED indicator light detection device, comprising a workbench, a power-on probe, a light shield and an illumination sensor; a relay positioning tool for loading a relay is provided on the workbench surface; the power-on probe is installed under the workbench through a first lifting mechanism and corresponds to the position of the relay positioning tool; the illumination sensor is installed on the top of the light shield, and the light shield is installed on the workbench through a second lifting mechanism and corresponds to the position of the relay positioning tool. The present invention detects the LED indicator light of the relay through the relay LED indicator light detection device, and can detect the relay whose relay LED indicator light brightness exceeds the tolerance due to the influence of the resistance size or the number of turns error, thereby avoiding the occurrence of quality accidents of the relay.

Description

Technical Field

[0001] The invention relates to the technical field of relay detection, and in particular to a relay LED indicator light detection device. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. Due to the particularity of control relays, in order to quickly distinguish the working status of the relay in the electric control cabinet, an LED indicator is usually installed inside the relay to indicate whether the relay is working or not.

[0003] At present, there are two common ways to install LED indicators: one is to connect the LED indicator in parallel to the working coil of the relay through a series current limiting resistor; the other is to pull out a tap in the relay coil, divide the voltage and directly connect it in parallel to the LED indicator. Since there are two specifications for the coil power supply of the relay: DC and AC; and DC is divided into DC forward and DC reverse; according to the voltage level, it is basically distributed between 3V and 380V. LED is a current-type device, and the light emission is related to the current, which is generally between 5 and 20mA; while most relays are voltage-type devices, which are related to voltage; therefore, the size of the resistance of the series current limiting resistor structure depends on the rated working voltage of the relay, and the size of the resistance of the tap shunt structure depends on the number of turns of the coil. When the produced resistor is abnormal or the number of turns of the coil is wrong, it will cause abnormal LED light emission and even directly affect the quality of the relay. At present, the more commonly used method for detecting relay LED indicators is to use manual visual inspection, that is, to use the human eye to identify whether the LED function is normal. Figure 1 The present invention is a schematic diagram of manual detection of a relay LED indicator light in the prior art. During detection, the lead pins of the relay 100 are inserted into the handheld test socket 200, and the coil pins in the lead pins of the relay 100 are connected to the power supply part in the handheld test socket 200, that is, the handheld test socket 200 supplies power to the coil of the relay 100. Then, the tester 300 observes with the human eye whether the LED indicator light 400 on the relay 100 is illuminated. This kind of LED inspection with the human eye can only check whether the LED is lit, and cannot determine the problem of LED brightness exceeding the tolerance due to the wrong resistance size or number of turns. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a relay LED indicator light detection device. By detecting the LED indicator light of a relay through the relay LED indicator light detection device, a relay whose LED indicator light brightness exceeds the tolerance due to the influence of the resistance size or the number of turns error can be detected, thereby avoiding the occurrence of quality accidents of the relay.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a relay LED indicator light detection device, comprising a workbench, a power-on probe, a light shield and an illumination sensor; a relay positioning tool for loading a relay is provided on the workbench surface; the power-on probe is installed under the workbench through a first lifting mechanism and corresponds to the position of the relay positioning tool; the illumination sensor is installed on the top of the light shield, and the light shield is installed on the workbench through a second lifting mechanism and corresponds to the position of the relay positioning tool.

[0006] The workbench includes a table top and support plates on both sides of the table top; the upper ends of the two support plates are respectively fixed to the two sides of the table top; the relay positioning tooling is a relay positioning seat; the relay positioning seat is provided with a socket portion for adapting the lead-out pins of the relay; the table top is provided with a through hole, and the relay positioning seat is installed at the through hole of the table top and makes the socket portion of the relay positioning seat communicate with the through hole of the table top.

[0007] The detection device also includes a probe fixing seat; the powered probe is fixed on the probe fixing seat, the upper end of the powered probe is provided with a relay coil lead-out pin connection portion, and the lower end of the powered probe is connected to a power supply system; the probe fixing seat is connected to the first lifting mechanism.

[0008] The first lifting mechanism is a first cylinder; the detection device also includes a connecting plate, the two ends of which are respectively connected to the middle of the two support plates, the cylinder body of the first cylinder is fixed on the connecting plate and the piston rod of the first cylinder is facing upward, and the end of the piston rod of the first cylinder is connected to the probe fixing seat.

[0009] The light shield is a frame structure consisting of four side walls. The illumination sensor is fixed below a sensor mounting plate, the sensor mounting plate is fixed on the top of the light shield, and the four sides of the sensor mounting plate are respectively fixed to the tops of the four side walls of the light shield.

[0010] The detection device also includes an upper support frame, which is fixed on the platform. The second lifting mechanism is installed in the upper support frame, and the second lifting mechanism is connected to one of the four side walls of the light shield.

[0011] The second lifting mechanism includes a track, a slider and a second cylinder; the track is vertically installed in the upper support frame, the cylinder body of the second cylinder is fixed on the top of the upper support frame and the piston rod of the second cylinder is facing downward; the end of the piston rod of the second cylinder is connected to the slider, and the slider is slidably fitted in the track; one of the four side walls of the light shield is fixed to the slider.

[0012] The detection device also includes a controller and an alarm, the input of the controller is connected to the output of the illumination sensor, and the output of the controller is connected to the input of the alarm; the controller stores upper and lower illumination thresholds; the illumination sensor outputs the collected illumination value of the relay LED indicator to the controller, and the controller compares the illumination value with the upper and lower illumination thresholds, and when the illumination value exceeds the range of the upper and lower illumination thresholds, the controller outputs a signal to the alarm, and the alarm sounds an alarm.

[0013] The power supply system includes a power supply circuit and a coil polarity switching circuit; the power supply circuit is electrically connected to the energized probe through the coil polarity switching circuit; the power supply circuit is also connected to the illumination sensor, controller and alarm to supply power to the illumination sensor, controller and alarm.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present invention adopts a workbench, a power-on probe, a light shield and an illumination sensor as main components to form a relay LED indicator light detection device, and a relay positioning tool for loading a relay is provided on the workbench surface; the power-on probe is installed under the workbench through a first lifting mechanism and corresponds to the position of the relay positioning tool; the illumination sensor is installed on the top of the light shield, and the light shield is installed on the workbench through a second lifting mechanism and corresponds to the position of the relay positioning tool. This structure of the present invention can detect relays whose relay LED indicator light brightness exceeds the tolerance due to the influence of the resistance size or the number of turns error when detecting the LED indicator light of the relay, thereby avoiding the occurrence of quality accidents of the relay.

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the relay LED indicator light detection device of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of manual detection of relay LED indicator lights in the prior art;

[0018] Figure 2 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention;

[0019] Figure 3 is a front view of an embodiment of the present invention;

[0020] Figure 4 is a top view of an embodiment of the present invention;

[0021] Figure 5 is a side view of an embodiment of the present invention;

[0022] Figure 6 It is a schematic perspective view of a partial structure of an embodiment of the present invention;

[0023] Figure 7 It is a circuit structure principle block diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Example

[0025] See also Figures 2 to 7 As shown, a relay LED indicator light detection device of the present invention comprises a workbench 1, a power-on probe 2, a light shield 3 and an illumination sensor 4; a relay positioning tool 5 for loading a relay 10 is provided on the surface of the workbench 1; the power-on probe 2 is installed under the workbench 1 and corresponds to the position of the relay positioning tool 5 through a first lifting mechanism 6; the illumination sensor 4 is installed on the top of the light shield 3, and the light shield 3 is installed on the workbench 1 and corresponds to the position of the relay positioning tool 5 through a second lifting mechanism 7.

[0026] In this embodiment, the workbench 1 includes a table top 11 and support plates 12 on both sides of the table top; the upper ends of the two support plates 12 are respectively fixed to the two sides of the table top 11; the relay positioning tool 5 is a relay positioning seat; the relay positioning seat 5 is provided with a socket portion 51 for adapting the lead-out pins of the relay; the table top 11 is provided with a through hole, and the relay positioning seat 5 is installed at the through hole of the table top 11 and makes the socket portion 51 of the relay positioning seat 5 communicate with the through hole of the table top 11.

[0027] In this embodiment, the detection device also includes a probe fixing seat 21; the powered probe 2 is fixed on the probe fixing seat 21, the upper end of the powered probe 2 is provided with a relay coil lead-out pin connection portion 22, and the lower end of the powered probe 2 is connected to the power supply system; the probe fixing seat 21 is connected to the first lifting mechanism 6.

[0028] In this embodiment, the first lifting mechanism 6 is a first cylinder; the detection device also includes a connecting plate 13, the two ends of the connecting plate 13 are respectively connected to the middle parts of the two support plates 12, the cylinder body 61 of the first cylinder 6 is fixed on the connecting plate 13 and the piston rod 62 of the first cylinder 6 is facing upward, and the end of the piston rod 62 of the first cylinder 6 is connected to the probe fixing seat 21.

[0029] In this embodiment, the light shielding hood 3 is a frame-shaped structure consisting of four side walls, the illumination sensor 4 is fixed under the sensor mounting plate 31, the sensor mounting plate 31 is fixed on the top of the light shielding hood 3, and the four sides of the sensor mounting plate 31 are respectively fixed to the tops of the four side walls of the light shielding hood 3.

[0030] In this embodiment, the detection device also includes an upper support frame 14, which is fixed on the platform 11, and the second lifting mechanism 7 is installed in the upper support frame 14, and the second lifting mechanism 7 is connected to one of the four side walls of the light shield 3.

[0031] In this embodiment, the second lifting mechanism 7 includes a rail 71, a slider 72 and a second cylinder 73; the rail 71 is vertically installed in the upper support frame 14, the cylinder body 731 of the second cylinder 73 is fixed on the top of the upper support frame 14 and the piston rod 732 of the second cylinder 73 is facing downward; the end of the piston rod 732 of the second cylinder 73 is connected to the slider 72, and the slider 72 is slidably fitted in the rail 71; one of the four side walls of the light shield 3 is fixed to the slider 72.

[0032] In this embodiment, the detection device also includes a controller 81 and an alarm 82, the input of the controller 81 is connected to the output of the illumination sensor 4, and the output of the controller 81 is connected to the input of the alarm 82; the controller 82 stores upper and lower illumination thresholds; the illumination sensor 4 outputs the collected illumination value of the relay LED indicator to the controller 81, and the controller 81 compares the illumination value with the upper and lower illumination thresholds. When the illumination value exceeds the range of the upper and lower illumination thresholds, the controller outputs a signal to the alarm 82, and the alarm 82 issues an alarm.

[0033] In this embodiment, the power supply system includes a power supply circuit 83 and a coil polarity switching circuit 84; the power supply circuit 83 is electrically connected to the energized probe 2 through the coil polarity switching circuit 84; the power supply circuit 83 is also connected to the illuminance sensor 4, the controller 81 and the alarm 82 to supply power to the illuminance sensor 4, the controller 81 and the alarm 82.

[0034] When in use, the power-on probe 2 is lowered and the light shield 3 is raised by manipulating the first cylinder 6 and the second cylinder 73, and the relay 10 is installed in the relay positioning seat 5, so that the coil lead pin of the relay 10 is matched with the socket part 51 of the relay positioning seat 5, so that the coil power supply system is connected to the relay coil pin through the probe through the coil polarity switching circuit 84, and the coil polarity switching is switched according to the type of LED installed. For a bidirectional LED, the system needs to make two judgments; the power-on probe 2 is raised by manipulating the first cylinder 6, and matched with the coil lead pin of the relay 10 in the socket part 51 of the relay positioning seat 5, and the light shield 3 is raised by manipulating the second cylinder 73. The light cover 3 descends and covers the relay 10, and power is supplied to the coil of the relay 10 through the power supply circuit 83, so that the relay LED indicator light is illuminated. The illumination sensor 4 is a current type sensor, and outputs current in linear proportion to the illumination. The output current is collected by the system, and the illumination sensor 4 outputs the collected illumination value of the relay LED indicator to the controller 81. The controller 81 compares the illumination value with the upper and lower illumination thresholds. When it does not exceed the range of the upper and lower illumination thresholds, it indicates that the product is qualified. When it exceeds the range of the upper and lower illumination thresholds, a signal is output to the alarm 82, and the alarm 82 sounds an alarm.

[0035] A relay LED indicator detection device of the present invention adopts a workbench 1, a power-on probe 2, a light shield 3 and an illumination sensor 4 as main components to constitute the relay LED indicator detection device, and a relay positioning fixture 5 for loading the relay is provided on the table surface of the workbench 1; the power-on probe 2 is installed under the workbench 1 and corresponds to the position of the relay positioning fixture 5 through a first lifting mechanism 6; the illumination sensor 4 is installed on the top of the light shield 3, and the light shield 3 is installed on the workbench 1 and corresponds to the position of the relay positioning fixture 5 through a second lifting mechanism 7. This structure of the present invention can detect the relay whose relay LED indicator brightness exceeds the tolerance due to the influence of the resistance size or the number of turns error when detecting the LED indicator of the relay, thereby avoiding the occurrence of quality accidents of the relay.

[0036] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A relay LED indicator light detection device, characterized in that: It includes a workbench, a power-on probe, a light shield and an illumination sensor; a relay positioning tool for loading a relay is provided on the workbench surface; the power-on probe is installed under the workbench through a first lifting mechanism and corresponds to the position of the relay positioning tool; the illumination sensor is installed on the top of the light shield, and the light shield is installed on the workbench through a second lifting mechanism and corresponds to the position of the relay positioning tool; the workbench includes a table top and support plates on both sides of the table top; the upper ends of the two support plates are respectively fixed to the two sides of the table top; the relay positioning tool is a relay positioning seat; the relay positioning seat is provided with a socket part for adapting the lead-out pin of the relay; the table top is provided with a through hole, the relay positioning seat is installed at the through hole of the table top and makes the socket part of the relay positioning seat communicate with the through hole of the table top; the detection device The device also includes a probe fixing seat; the powered probe is fixed on the probe fixing seat, the upper end of the powered probe is provided with a relay coil lead-out pin connection part, and the lower end of the powered probe is connected to the power supply system; the probe fixing seat is connected to the first lifting mechanism; the first lifting mechanism is a first cylinder; the detection device also includes a connecting plate, the two ends of the connecting plate are respectively connected to the middle parts of the two support plates, the cylinder body of the first cylinder is fixed on the connecting plate and the piston rod of the first cylinder is facing upward, and the end of the piston rod of the first cylinder is connected to the probe fixing seat; the light shield is a frame structure composed of four side walls, the illumination sensor is fixed under the sensor mounting plate, the sensor mounting plate is fixed on the top of the light shield, and the four sides of the sensor mounting plate are respectively fixed to the tops of the four side walls of the light shield.

2. The relay LED indicator light detection device according to claim 1, characterized in that: The detection device also includes an upper support frame, which is fixed on the platform. The second lifting mechanism is installed in the upper support frame, and the second lifting mechanism is connected to one of the four side walls of the light shield.

3. The relay LED indicator light detection device according to claim 2, characterized in that: The second lifting mechanism includes a track, a slider and a second cylinder; the track is vertically installed in the upper support frame, the cylinder body of the second cylinder is fixed on the top of the upper support frame and the piston rod of the second cylinder is facing downward; the end of the piston rod of the second cylinder is connected to the slider, and the slider is slidably fitted in the track; one of the four side walls of the light shield is fixed to the slider.

4. The relay LED indicator light detection device according to claim 1, characterized in that: The detection device also includes a controller and an alarm, the input of the controller is connected to the output of the illumination sensor, and the output of the controller is connected to the input of the alarm; the controller stores upper and lower illumination thresholds; the illumination sensor outputs the collected illumination value of the relay LED indicator to the controller, and the controller compares the illumination value with the upper and lower illumination thresholds, and when the illumination value exceeds the range of the upper and lower illumination thresholds, the controller outputs a signal to the alarm, and the alarm sounds an alarm.

5. The relay LED indicator light detection device according to claim 4, characterized in that: The power supply system includes a power supply circuit and a coil polarity switching circuit; the power supply circuit is electrically connected to the energized probe through the coil polarity switching circuit; the power supply circuit is also connected to the illumination sensor, controller and alarm to supply power to the illumination sensor, controller and alarm.

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