Universal lamp panel suitable for electrical detection equipment manufacturing

Abstract

The invention discloses a universal lamp panel suitable for electrical detection equipment manufacturing. Comprising a 28V-GND bus bonding pad, a 28V bus bonding pad, a first light-emitting diode pin, a second light-emitting diode pin, an input signal welding spot, a current-limiting resistor fixed pin, a first current-limiting resistor movable pin, a second current-limiting resistor movable pin, a second branch line, a first branch line, a first wiring, a second wiring, a second bus, a first bus, an independent unit, a lamp panel mounting hole and a PCB substrate. The method is high in universality and can meet the manufacturing requirements of lamp panels with different common power supply polarities. The manufacturing efficiency of non-standard equipment can be improved, and the equipment development time is saved. Batch processing can be achieved, and cost is saved.

Description

Technical Field

[0001] The invention relates to a universal lamp panel suitable for manufacturing electrical testing equipment. Background Art

[0002] At present, there are many types of aircraft, and the number of supporting electrical equipment in various environments is huge. At present, the aircraft is updated at a fast speed, and the products are constantly updated. The corresponding electrical products are often different and belong to customized research and development. There are many output interfaces, ranging from dozens to hundreds of points. Newly developed products often need to be fully tested for their functional performance, and product tests under various environmental conditions in the field require testing equipment. The development time of the equipment is often very short, and it is necessary to focus on the development and manufacturing time of the equipment to shorten the equipment testing and manufacturing cycle in the product development process, and focus on solving other technical problems in the product production and development process. The output interface line detection of aviation airborne equipment often requires the product to be powered on, and an actual indicator light is connected in series on the circuit to feedback the circuit on-off status of the product. For products with more indicator lights, the manufacturing cycle of the detection equipment is generally proportional to the number of indicator lights, so the manufacturing of detection equipment for products with more output circuits will be more time-consuming. In addition, the output signals of products are often different. Some output circuits go to the negative pole of the DC power supply, while some go back to the positive pole of the power supply. This will make the welding of indicator lights with polarity more complicated, and the use of traditional equipment manufacturing methods will not meet the needs of rapid development. Summary of the invention

[0003] The present invention aims to solve the technical problem of rapid development of non-standard electrical testing equipment required for aviation power distribution devices.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A universal lamp board suitable for manufacturing electrical detection equipment, comprising a 28V-GND bus pad, a 28V bus pad, a first pin of a light emitting diode, a second pin of a light emitting diode, an input signal soldering point, a fixed foot of a current limiting resistor, a first movable foot of a current limiting resistor, a second movable foot of a current limiting resistor, a second branch line, a first branch line, a first wiring, a second wiring, a second bus, a first bus, an independent unit, a lamp board mounting hole, and a PCB substrate; a 28V-GND bus pad and a 28V bus pad are arranged on one side of the PCB substrate; five independent units are arranged on the PCB substrate, each of which is provided with a first pin of a light emitting diode, a second pin of a light emitting diode, an input signal soldering point, a fixed foot of a current limiting resistor, a first movable foot of a current limiting resistor, and a second movable foot of a current limiting resistor; two ends of a connecting line are respectively connected to the second pin of the light emitting diode and the input signal soldering point, and a fixed foot of a current limiting resistor, a first movable foot of a current limiting resistor, and a second movable foot of a current limiting resistor. The first and second independent units are connected to the first and second independent units of the PCB, and the second and third independent units are connected to the first and second independent units of the PCB. The first and second independent units of the PCB ...

[0005] The beneficial effects of adopting the above technical solution are: 1. The present invention has strong versatility and can meet the manufacturing requirements of lamp panels with different common power polarities.

[0006] 2. The present invention can improve the manufacturing efficiency of non-standard equipment and save equipment development time.

[0007] 3. The present invention can be processed in batches, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The top surface structure schematic diagram of the universal lamp panel suitable for manufacturing electrical testing equipment according to the present invention.

[0009] Figure 2 The present invention is a schematic diagram of the bottom structure of a universal lamp panel suitable for manufacturing electrical testing equipment.

[0010] In the figure: 1-28V-GND bus pad, 2-28V bus pad, 3-first pin of light-emitting diode, 4-second pin of light-emitting diode, 5-input signal solder joint, 6-fixed foot of current-limiting resistor, 7-movable foot of current-limiting resistor one, 8-movable foot of current-limiting resistor two, 9-branch line two, 10-branch line one, 11-wiring one, 12-wiring two, 13-bus two, 14-bus one, 15-independent unit, 16-lamp board mounting hole, 17-PCB substrate. DETAILED DESCRIPTION

[0011] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0012] In order to solve this problem, a universal lamp panel can be designed for batch processing, saving the processing cost of the indicator light panel and shortening the welding time of the indicator light to meet the rapid manufacturing needs of different distribution device detection equipment.

[0013] The present invention provides a universal light board suitable for manufacturing electrical testing equipment, which aims to solve the problem that during the development of electrical testing equipment, multiple physical indicator lights are needed to detect the output circuit of the tested product, and the tested output voltage signal has both positive and negative test scenarios, so as to shorten the development cycle of the testing equipment.

[0014] The principle of the indicator board is that a current limiting resistor is used in the detection circuit, and one of the pins (fixed pin) of the resistor is connected in series to one of the pins of the LED indicator, and the other pin (active pin) can lead the negative pin of the indicator of the common DC power supply negative pole to the power supply negative pole bus, and can also lead the positive pin of the indicator of the common DC power supply positive pole to the power supply positive pole bus; and the other pin of the LED is led out to an independent pad, which is used for the output signal welding point of the product under test; when the output signal of the product under test is positive electricity, the current limiting resistor is connected to the common power supply negative pole, and the current is output from the positive power supply through the product to the positive pole of the LED indicator, and then returns to the negative power supply through the current limiting resistor, and the indicator light will be lit, indicating that the output positive signal circuit of the product under test is normal; when the output signal of the product under test is negative electricity, the current limiting resistor is connected to the common power supply positive pole, and the current is output from the positive power supply through the current limiting resistor to the positive pole of the LED indicator, and then passes through the product and returns to the negative power supply, and the indicator light will be lit, indicating that the output negative signal circuit of the product under test is normal; thereby achieving the purpose of detection feedback.

[0015] It should be noted that during the use of the PCB lamp board manufactured by this principle, only one of the circuits can be selected for welding of the current-limiting resistor. The indicator light is a polarized light-emitting diode and can only be lit in one direction. The welding of the lamp foot must be consistent with the welding of the current-limiting resistor. Multiple indicator lights are designed on the same PCB board, and the number and shape are usually not fixed. They can be made into strips or other shapes according to actual use. They are usually made into strips. For the convenience of description, this solution will take a rectangular PCB board composed of 5 LED lights as an example.

[0016] The following is a brief description of the light board in conjunction with the accompanying drawings: The light board is generally processed into a double-sided board, the top surface is Figure 1 ,The top surface of the lamp board is usually used as the welding surface, with conductive circuits and pads; Figure 2 As the component installation surface, this surface is printed with logos for easy identification. In some special occasions, the components can be soldered in reverse.

[0017] 1. Top surface: device welding surface, mainly the pads of each device. Each independent unit has 6 pads. Each unit is connected to bus 1 and bus 2 through branch line 1 and branch line 2 respectively. Several pads are connected by conductive lines.

[0018] 2. Bottom: The device mounting surface, mainly used for mounting devices, as well as identification of each device, current limiting resistor, LED indicator light and other identifications. The positive and negative pads are distinguished by shape, with square pads representing positive and round pads representing negative. There are also conductive lines connecting the devices.

[0019] like Figure 2 As shown: the corresponding logo is printed, where G represents the 28V_GND loop, V represents the 28V loop (it should be noted here that this article takes the DC 28V power supply as an example, and it can also be other DC voltage values. In fact, it only needs to match the current limiting resistor with appropriate resistance to ensure that the LED indicator is not burned out); LED represents the corresponding number of the light-emitting diode, which is convenient for the installation and maintenance of the indicator; R represents the current limiting resistor 1, R` represents the current limiting resistor 2, and H represents the number of the input signal to be tested, in order to distinguish the corresponding output paths of different tested products and facilitate the welding wire connection.

[0020] The light board is a printed circuit board, which can be an aluminum plate or a copper plate. It can be made into the required substrate, shape and number of indicator lights according to actual needs and the principle of the present invention. The general light board in this scheme is rectangular as a whole, and multiple independent units are distributed on it. Each independent unit is connected to bus one and bus two through branch one and branch two respectively, that is, the active foot of current limiting resistor one is connected to bus one through a branch line, and the active foot of current limiting resistor two is connected to bus two through a branch line. Through this mode, the number of units can be expanded infinitely in theory, but it is not recommended to exceed 30. The more the number, the more the bus current must be considered. The mounting holes of the light board are located at both ends of the light board, which play a fixing role; two pads are designed above one end, which are used for the total soldering points of bus one and bus two. There are two holes on the pads, which are convenient for leading out solder wires and using multiple light boards in parallel. The first pin 3 of the light-emitting diode is connected to the fixed pin 6 of the current-limiting resistor via a connecting line 11, and the current-limiting resistor is connected in series with one of the pins of the LED lamp; the second pin 4 of the light-emitting diode is connected to the input signal soldering point 5 via a connecting line 2 12, and the other pin of the LED is connected to the input signal soldering point position, which is represented by the code H and is used for welding the external signal detection line. The movable pin 7 of the current-limiting resistor 1 and the fixed pin 6 of the current-limiting resistor are connected via a current-limiting resistor R, that is, the position marked by R in the figure, and the movable pin 8 of the current-limiting resistor 2 and the fixed pin 6 of the current-limiting resistor are connected via a current-limiting resistor R`, that is, Figure 2 The R` marking position in the figure. In actual use, the resistance value should be selected in combination with the rated working current of the LED and the power supply voltage, and only one of the two current limiting resistors can be welded, that is, when the output signal of the product under test is positive, the current limiting resistor is connected to the negative power supply, and only the R resistor is welded. When the output signal of the product under test is negative, the current limiting resistor is connected to the positive power supply, and only the R` resistor is welded. By default, the current limiting resistor R is welded, and the indicator light is connected to the negative power supply. In addition, the two-pin soldering pad of the LED, the first pin 3 of the light-emitting diode and the second pin 4 of the light-emitting diode are of different shapes. The first pin 3 of the soldering pad of the light-emitting diode is round, and the default soldering lamp negative pole is welded. The second pin 4 of the soldering pad of the light-emitting diode is square, and the default soldering lamp positive pole is welded. The resistor and LED indicator are welded according to the input signal of the product under test. The welding of the LED is consistent with that of the current limiting resistor. That is, when welding the current limiting resistor R, the positive electrode of the LED indicator is welded to the second pin 4 welding point of the light-emitting diode, and the negative electrode is welded to the first pin 3 welding point of the light-emitting diode; when welding the current limiting resistor R`, the LED indicator is welded in reverse, the positive electrode of the indicator is welded to the first pin 3 welding point of the light-emitting diode, and the negative electrode is welded to the second pin 4 welding point of the light-emitting diode. In this way, it can be ensured that both the positive and negative electrical signals output by the tested product can be detected.

Claims

1. A universal light board suitable for manufacturing electrical testing equipment, comprising a 28V-GND bus pad (1), a 28V bus pad (2), a first pin of a light emitting diode (3), a second pin of a light emitting diode (4), an input signal soldering point (5), a fixed foot of a current limiting resistor (6), a first movable foot of a current limiting resistor (7), a second movable foot of a current limiting resistor (8), a branch line (9), a branch line (10), a wiring line (11), a wiring line (12), a bus line (13), a bus line (14), an independent unit (15), and a light board mounting hole (16) , a PCB substrate (17); a 28V-GND bus pad (1) and a 28V bus pad (2) are provided on one side of the PCB substrate (17); five independent units (15) are provided on the PCB substrate (17), each independent unit (15) being provided with a first pin (3) of a light-emitting diode, a second pin (4) of a light-emitting diode, an input signal solder joint (5), a fixed pin (6) of a current-limiting resistor, a first movable pin (7) of a current-limiting resistor and a second movable pin (8) of a current-limiting resistor; two ends of a connecting wire (12) are respectively connected to the second pin (4) of the light-emitting diode and The input signal solder joint (5) is connected; the two ends of the connecting wire 1 (11) are respectively connected to the first pin (3) of the light-emitting diode and the fixed pin (6) of the current-limiting resistor; the 28V-GND bus solder pad (1) is connected to one end of the bus 1 (14), and the other end of the bus 1 (14) is connected to the active pin (7) of the current-limiting resistor on the fifth independent unit (15); the 28V bus solder pad (2) is connected to one end of the bus 2 (13), and the other end of the bus 2 (13) is connected to the active pin (8) of the current-limiting resistor on the fifth independent unit (15); the first independent unit (15 ) to the fourth independent unit (15), the first movable foot (7) of the current limiting resistor is connected to the first bus (14) through the first branch line (10); the second movable foot (8) of the current limiting resistor on the first independent unit (15) to the fourth independent unit (15) is connected to the second bus (13) through the second branch line (9); the first movable foot (7) of the current limiting resistor is connected to the fixed foot (6) of the current limiting resistor through a resistor, and the second movable foot (8) of the current limiting resistor is connected to the fixed foot (6) of the current limiting resistor through a resistor; and light board mounting holes (16) are also provided at both ends of the PCB substrate (17).

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