A transition board for instruments on a training platform
By designing a transition board for the training platform's instruments and using a rectifier bridge, filter capacitors, and linear voltage regulator chips, the problem of incompatibility between the old and new instrument interfaces was solved, achieving power purification and signal pass-through, thus improving the equipment's compatibility and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHIZHOU TOURISM SCHOOL
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-03
AI Technical Summary
The interface definitions of instruments and meters on the existing electrical and electronic training platforms in engineering laboratories are incompatible with the physical structure, making it impossible to directly replace old and new instruments and affecting the reusability of the equipment.
Design a transition board for a training platform instrument, using a rectifier bridge, three-stage filter capacitors and a linear voltage regulator chip to achieve power purification and signal pass-through, providing a stable +5V DC power supply and signal path, and ensuring interface compatibility.
It achieves compatibility between new and old instrument interfaces, ensures the stability of power supply and measurement signals, avoids signal attenuation, and improves equipment reusability.
Smart Images
Figure CN224459670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering experimental auxiliary equipment technology, specifically to a training platform instrument transition board. Background Technology
[0002] Electrical and electronic engineering training platforms are core teaching equipment in engineering laboratories (such as those for electrical engineering, automation, and electronic information engineering). They are mainly used by students for courses such as basic circuit experiments, electronic technology training, and electrical control practice. Their main functions include: basic circuit experiments, analog and digital electronics training, motor and electrical control experiments, and power supply and power system experiments.
[0003] However, the instruments and meters in the electrical and electronic training benches of engineering laboratories are mostly custom-made. Due to their age, repair parts are not interchangeable and cannot be directly replaced. For example, the DC voltmeters / ammeters of traditional training benches (such as electrical and electronic experimental boxes) usually use the XH2.54-4P interface, which integrates AC power input and signal transmission functions; while new digital instruments (such as intelligent digital display meters) mostly use the XH2.54-2P interface, which requires independent power supply (+5V DC) and signal path; the incompatibility between the interface definitions and physical structures makes direct replacement difficult. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a transition plate for instruments on a training platform, which solves the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A training platform instrument transition board includes:
[0007] Input terminals: The input terminals are connected to an AC power source;
[0008] Rectifier bridge: The rectifier bridge is connected to the input terminal and is used to convert alternating current into pulsating direct current;
[0009] Filtering and voltage regulation module: The filtering and voltage regulation module is connected to the rectifier bridge, and the filtering and voltage regulation module includes a three-stage filter capacitor and a voltage regulator chip connected together;
[0010] Output interface: The output interface includes a power supply interface and a signal interface. The power supply interface is connected to the filtering and voltage regulation module; the signal interface is connected to the input terminal.
[0011] Furthermore, the three-stage filter capacitor includes capacitor one, capacitor two, and capacitor three; one set of pins of the rectifier bridge is connected to the voltage regulator chip via line one, and the other set of pins of the rectifier bridge is connected to the power supply interface via line two; one pin of the voltage regulator chip is connected to the power supply interface via line one; the two ends of capacitor one and capacitor two are respectively connected to line one and line two; the two ends of capacitor three are respectively connected to line two and line three.
[0012] Furthermore, capacitor one is a 100μF / 16V electrolytic capacitor, capacitor two is a 0.33μF ceramic capacitor, and capacitor three is a 0.1μF ceramic capacitor.
[0013] Furthermore, the pin wires of the power supply interface and the signal interface are marked with different colors.
[0014] This utility model provides a transition plate for instruments on a training platform. Compared with the prior art, it has the following advantages:
[0015] The instrument transition board of this utility model adopts a rectifier bridge + three-stage filter + linear voltage regulator to purify the power supply and ensure a clean +5V output power.
[0016] The input terminal is directly connected to the signal interface, allowing the input signal to pass directly to the signal interface and avoiding signal attenuation.
[0017] The power supply and signal interfaces are standardized with red (+5V), black (GND), white (signal input), and black (signal output) colors to prevent misconnection.
[0018] The transition board of this utility model is used to connect the original DC voltmeter / ammeter interface (XH2.54-4P interface) of the training platform with the new voltmeter / ammeter (XH2.54-2P interface), providing a stable +5V DC power supply and signal path, and ensuring the compatibility of instrument power supply and measurement signal. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 A circuit diagram of this utility model is shown;
[0021] Figure 2 A schematic diagram of the 3D model structure of the PCB board of this utility model is shown. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] Example
[0024] To address the technical issues in the background section, the following instrument transition board for the training platform is proposed:
[0025] Combination Figure 1 This utility model provides a transition plate for instruments on a training platform.
[0026] Input terminal P1: Input terminal P1 is used for AC input. Input terminal P1 has four pins (pins 1, 2, 3, and 4). Input terminal P1 is connected to an AC power supply. The AC pins (pins 3 and 4) of input terminal P1 (XH2.54-4P interface) are connected to the AC power supply. Pins 1 and 2 are connected to the original instrument signal.
[0027] Rectifier bridge D1: The rectifier bridge D1 is connected to the input terminal P1. The rectifier bridge D1 is used to convert AC power into pulsating DC power. The rectifier bridge D1 adopts the MB6S rectifier bridge.
[0028] Filtering and voltage regulation module: The filtering and voltage regulation module is connected to rectifier bridge D1. The module includes a three-stage filtering capacitor and a voltage regulator chip U2. Specifically, the three-stage filtering capacitor includes capacitor C1, capacitor C2, and capacitor C3. One pin of rectifier bridge D1 is connected to voltage regulator chip U2 via line one, and the other pin of rectifier bridge D1 is connected to the power supply ground terminal GND via line two. One pin of voltage regulator chip U2 is connected to power supply interface CN1 via line three. The two ends of capacitor C1 and capacitor C2 are connected to line one and line two, respectively; the two ends of capacitor C3 are connected to line two and line three, respectively. Capacitor C1 is a 100μF / 16V electrolytic capacitor, capacitor C2 is a 0.33μF ceramic capacitor, and capacitor C3 is a 0.1μF ceramic capacitor. Capacitor C1 (100μF): filters out low-frequency ripple. Capacitors C2 (0.33μF) and C3 (0.1μF) are connected in parallel to filter out high-frequency noise. The voltage regulator chip U2 uses a 78L05, with the input (IN) connected to the rectified voltage and the output (OUT) providing a stable +5V DC. The GND pin is grounded, forming a complete circuit. Line 1 corresponds to the positive terminal of the rectified voltage, line 2 is the common ground line, and line 3 is the regulated output line.
[0029] Output Interface: The output interface includes a power supply interface CN1 and a signal interface CN2. The power supply interface CN1 is connected to the voltage regulator module; the signal interface CN2 is connected to the input terminal P1. The pin wires of the power supply interface CN1 and the signal interface CN2 are marked with different colors; the power supply interface CN1 uses red (+5V) and black (GND) wires, and the signal interface CN2 uses white (signal input) and black (signal output) wires. For example, the power supply interface CN1 uses XH2.54-2p: Pin 1 (black): GND (ground). Pin 2 (red): Output +5V (from U2's OUT).
[0030] The signal interface CN2 uses XH2.54-2p: Pin 1 (white): Measurement signal input (directly connected to pin 1 of P1). Pin 2 (black): Measurement signal output (directly connected to pin 2 of P1).
[0031] In this implementation case, pins 1 and 2 of the input terminal P1 are connected to the original instrument's measurement signal input / output plug on the training platform; pins 3 and 4 are connected to the secondary winding of the training platform's power transformer; pin 2 of the power supply interface CN1 is connected to the positive terminal of the new instrument's power supply, and pin 1 is connected to the negative terminal of the new instrument's power supply; pin 1 of the signal interface CN2 is connected to the signal input of the new instrument's measurement terminal, and pin 2 is connected to the signal output of the new instrument's measurement terminal. The details are shown in Table (1) below.
[0032] Table (1) Circuit Interface Description
[0033]
[0034]
[0035] This application is applicable to scenarios such as the renovation of electrical and electronic training platforms and laboratory instruments, solving the compatibility issues of interfaces and power supplies between new and old instruments, and improving equipment reusability. The model diagram of this application is shown below. Figure 2 As shown.
[0036] The instrument transition board of this utility model adopts a rectifier bridge + three-stage filter + linear voltage regulator to purify the power supply and ensure a clean +5V output power.
[0037] The input terminal is directly connected to the signal interface, allowing the input signal to pass directly to the signal interface and avoiding signal attenuation.
[0038] The power supply and signal interfaces are standardized with red (+5V), black (GND), white (signal input), and black (signal output) colors to prevent misconnection.
[0039] The XH2.54 output interface has different pin counts: XH2.54-4P input vs XH2.54-2P output; this implements physical foolproof interface protection.
[0040] The transition board of this utility model is used to connect the original DC voltmeter / ammeter interface (XH2.54-4P interface) of the training platform with the new voltmeter / ammeter (XH2.54-2P interface), providing a stable +5V DC power supply and signal path, and ensuring the compatibility of instrument power supply and measurement signal.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.
[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A hands-on training table instrument transition plate, characterized by: include: Input terminal, which is connected to an AC power source; A rectifier bridge, connected to an input terminal, is used to convert alternating current (AC) into pulsating direct current (DC). A filtering and voltage regulation module, which is connected to a rectifier bridge, includes a three-stage filtering capacitor and a voltage regulator chip connected together. The output interface includes a power supply interface and a signal interface. The power supply interface is connected to the filtering and voltage regulation module, and the signal interface is connected to the input terminal.
2. The instrument transition plate for a hands-on training table of claim 1, wherein: The three-stage filter capacitor includes capacitor one, capacitor two, and capacitor three; one set of pins of the rectifier bridge is connected to the voltage regulator chip via line one, and the other set of pins of the rectifier bridge is connected to the power supply interface via line two; one pin of the voltage regulator chip is connected to the power supply interface via line one; the two ends of capacitor one and capacitor two are respectively connected to line one and line two; the two ends of capacitor three are respectively connected to line two and line three.
3. A bench instrument transition plate according to claim 2, wherein: The capacitor is a 100μF / 16V electrolytic capacitor.
4. The instrument transition board for a training table of claim 2, wherein: The second capacitor is a 0.33μF ceramic capacitor.
5. The instrument transition board for a training table of claim 2, wherein: The third capacitor is a 0.1μF ceramic capacitor.
6. The instrument transition board of claim 1, wherein: The pin wires of the power supply interface and the signal interface are marked with different colors.