Universal signal conversion module

Abstract

The utility model discloses a universal signal conversion module, comprising a signal conversion module, the signal conversion module comprises a control unit, a communication interface, an AD, an electromagnetic acquisition conversion unit, an electronic acquisition conversion unit and a digital decoding unit, the electromagnetic acquisition conversion unit and the electronic acquisition conversion unit are both connected with the AD, and the digital decoding unit is connected with the AD. According to the universal signal conversion module provided by the utility model, the signal conversion module can adaptively acquire and process electromagnetic, electronic and digital signals, so that the compatibility and the flexibility of a system are improved; by unifying hardware interfaces and terminal definitions, the system construction process is simplified, and the maintenance convenience is improved; with the help of a high-precision AD conversion channel and an intelligent signal identification and processing system, rapid and accurate conversion and processing of signals are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of signal processing, and particularly relates to a general signal conversion module. Background Art

[0002] In the distribution network system, it is often necessary to process signals from different sources, including electromagnetic signals, electronic signals, digital signals, etc. The signal processing system can monitor key parameters such as voltage and current in the distribution network in real time. Through signal processing technologies such as digital signal processing technology, the collected signals are quantized, amplified, filtered, etc., so as to obtain key information such as the peak value, effective value, power, and power factor of each phase of the power grid. These information are crucial for controlling the operating state of the system and can ensure the safe and stable operation of the power grid. In terms of distribution network fault detection, the control unit of the feeder terminal judges the line fault by detecting the voltage and current data of the line. The detection module performs circuit and A / D conversion processing on the input signals obtained from different types of switches, and transmits the converted data to the control unit through the communication interface. The control unit makes corresponding protection logics based on the calculation and judgment of the voltage and current data, cuts off the fault in time, and ensures the operation safety of the distribution network line and reduces the impact of the fault on the power grid users.

[0003] However, the traditional signal processing system has the following disadvantages:

[0004] The traditional signal processing system is often designed for specific types of signals, and it is difficult to achieve unified acquisition and processing of multiple types of signals, resulting in complex system construction, a large number of types, which is not conducive to production and maintenance, and is costly and difficult to maintain. Content of the Utility Model

[0005] The purpose of the utility model is to provide a general signal conversion module to solve the problems in the above-mentioned background art that the traditional signal processing system is often designed for specific types of signals, it is difficult to achieve unified acquisition and processing of multiple types of signals, resulting in complex system construction, high cost and difficult maintenance.

[0006] To achieve the above object, the present utility model provides the following technical solutions: a general-purpose signal conversion module, including a signal conversion module, the signal conversion module includes a control unit, a communication interface, an AD, an electromagnetic acquisition conversion unit, an electronic acquisition conversion unit, and a digital decoding unit. The electromagnetic acquisition conversion unit and the electronic acquisition conversion unit are both connected to the AD. The AD and the digital decoding unit are both connected to the communication interface. The communication interface is connected to the control unit. The electromagnetic acquisition conversion unit accesses the electromagnetic switch analog telemetry input through the electromagnetic device analog quantity interface. The electronic acquisition conversion unit accesses the electronic switch analog telemetry input through the electronic device analog quantity interface. The digital decoding unit accesses through the digital device data communication interface. The communication interface connects the interface of the general signal conversion module and the control unit for data transmission. The control unit is the core control unit of the feeder terminal, which processes the communication data of the general signal conversion module.

[0007] Preferably, the communication interface is provided with an electromagnetic signal interface, an electronic signal interface, a digital signal interface, and a core unit communication interface.

[0008] Preferably, the core unit communication interface is connected to the control unit.

[0009] Preferably, the electromagnetic acquisition conversion unit includes a resistor R17, a voltage transformer, ferrite beads FB4, ferrite beads FB6, a resistor R21, a resistor R15, a resistor R19, a resistor R22, a resistor R24, a capacitor C23, a capacitor C25, diodes D8, D10, and a resistor voltage RV1.

[0010] Preferably, the 1-terminal of the voltage transformer is connected to one end of the resistor R17. The 2-terminal of the voltage transformer and the other end of the resistor R17 are respectively connected to both ends of the resistor voltage RV1. The 3-terminal of the voltage transformer is connected to one end of the ferrite bead FB6. The other end of the ferrite bead FB6 is respectively connected to one end of the resistor R21, the diode D10, one end of the resistor R24, and one end of the resistor R22. The other end of the resistor R22 is connected to one end of the capacitor C25. The 4-terminal of the voltage transformer is connected to one end of the ferrite bead FB4. The other end of the ferrite bead FB4 is respectively connected to the other end of the resistor R21, one end of the diode D8, one end of the resistor R15, and one end of the resistor R19. The other end of the resistor R19 is connected to one end of the capacitor C23. The other ends of the capacitor C23, the resistor R15, the diode D8, the capacitor C25, the resistor R24, and the diode D10 are all grounded.

[0011] Preferably, the electronic acquisition and conversion unit includes a power system T1, a voltage transformer TV10, and a metal oxide varistor MOV11.

[0012] Preferably, one terminal of the power system T1 is respectively connected to one end of the voltage transformer TV10 and one end of the metal oxide varistor MOV11, the other terminal of the power system T1 is respectively connected to the other end of the voltage transformer TV10 and the other end of the metal oxide varistor MOV11, the 4-terminal of the power system T1 is connected to UA-N, the 6-terminal of the power system T1 is connected to UA-P, and the 3-terminal of the power system T1 is grounded.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The signal conversion module can adaptively collect and process electromagnetic, electronic, and digital signals, improving the compatibility and flexibility of the system;

[0015] 2. By means of a unified hardware interface and terminal definition, the system construction process is simplified, the cost is reduced, and the maintenance convenience is improved;

[0016] 3. With the help of a high-precision AD conversion channel and an intelligent signal recognition and processing system, fast and accurate conversion and processing of signals are achieved; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the architecture of the signal conversion module of the present utility model;

[0018] Figure 2 It is a connection diagram of the communication interface and the control unit of the present utility model;

[0019] Figure 3 It is a circuit diagram of the electromagnetic acquisition and conversion unit of the present utility model;

[0020] Figure 4 It is a circuit diagram of the electronic acquisition and conversion unit of the present utility model.

[0021] In the figure: 1. Signal conversion module; 2. Control unit; 3. Communication interface; 31. Electromagnetic signal interface; 32. Electronic signal interface; 33. Digital signal interface; 34. Core unit communication interface; 4. AD; 5. Electromagnetic acquisition and conversion unit; 6. Electronic acquisition and conversion unit; 7. Digital decoding unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0023] Please refer to Figures 1-4, the utility model provides a general signal conversion module, including signal conversion module 1, which includes a control unit 2, a communication interface 3, an AD 4, an electromagnetic acquisition and conversion unit 5, an electronic acquisition and conversion unit 6, and a digital decoding unit 7. The electromagnetic acquisition and conversion unit 5 and the electronic acquisition and conversion unit 6 are both connected to the AD 4. The AD 4 and the digital decoding unit 7 are both connected to the communication interface 3. The communication interface 3 is connected to the control unit 2. The electromagnetic acquisition and conversion unit 5 accesses the electromagnetic switch analog telemetry input through the electromagnetic device analog interface; the electronic acquisition and conversion unit 6 accesses the electronic switch analog telemetry input through the electronic device analog interface; the digital decoding unit 7 accesses through the digital device data communication interface; the communication interface 3 connects the interface between the general signal conversion module 1 and the control unit 2 for data transmission; the control unit 2 is the core control unit of the feeder terminal, which processes the communication data of the general signal conversion module 1.

[0024] The communication interface 3 is provided with an electromagnetic signal interface 31, an electronic signal interface 32, a digital signal interface 33, and a core unit communication interface 34.

[0025] The core unit communication interface 34 is connected to the control unit 2.

[0026] The electromagnetic acquisition and conversion unit 5 includes a resistor R17, a voltage transformer, ferrite beads FB4, ferrite beads FB6, a resistor R21, a resistor R15, a resistor R19, a resistor R22, a resistor R24, a capacitor C23, a capacitor C25, diodes D8, D10, and a resistor voltage RV1.

[0027] One end of the 1 terminal of the voltage transformer is connected to one end of the resistor R17. The 2 terminal of the voltage transformer and the other end of the resistor R17 are respectively connected to both ends of the resistor voltage RV1. One end of the 3 terminal of the voltage transformer is connected to one end of the ferrite bead FB6. The other end of the ferrite bead FB6 is respectively connected to one end of the resistor R21, diode D10, one end of the resistor R24, and one end of the resistor R22. The other end of the resistor R22 is connected to one end of the capacitor C25. One end of the 4 terminal of the voltage transformer is connected to one end of the ferrite bead FB4. The other end of the ferrite bead FB4 is respectively connected to the other end of the resistor R21, one end of the diode D8, one end of the resistor R15, and one end of the resistor R19. The other end of the resistor R19 is connected to one end of the capacitor C23. The other ends of the capacitor C23, resistor R15, diode D8, capacitor C25, resistor R24, and diode D10 are all grounded.

[0028] The electronic acquisition and conversion unit 6 includes a power system T1, a voltage transformer TV10, and a metal oxide varistor MOV11.

[0029] One end of the terminal 1 of the power system T1 is respectively connected to one end of the voltage transformer TV10 and one end of the metal oxide varistor MOV11. The terminal 2 of the power system T1 is respectively connected to the other end of the voltage transformer TV10 and the other end of the metal oxide varistor MOV11. The terminal 4 of the power system T1 is connected to UA-N. The terminal 6 of the power system T1 is connected to UA-P. The terminal 3 of the power system T1 is grounded.

[0030] When the embodiment of the present application is in use: The signal conversion module 1 can respectively collect electromagnetic signals, electronic signals and digital signals. The acquisition unit is internally integrated with sensors or receiving circuits adapted to various types of signals to ensure accurate capture of signals. The acquisition unit is connected to the connection module through a unified hardware interface, such as a standardized connector. The module terminal definitions are unified, facilitating the access and interchange of different signals. This interface design has strong compatibility, supports fast plugging and unplugging, improves the scalability of the system and the convenience of maintenance. The signal conversion module 1 is built-in with high-precision AD4 conversion channels for converting analog signals such as electromagnetic and electronic signals into digital signals for subsequent processing. At the same time, an SPI interface is provided to support the direct access and high-speed transmission of digital signals to meet the processing requirements of digital signals. The electromagnetic acquisition and conversion unit 5 accesses the electromagnetic switch analog telemetry input through the electromagnetic device analog quantity interface. The electronic acquisition and conversion unit 6 accesses the electronic switch analog telemetry input through the electronic device analog quantity interface. The digital decoding unit 7 accesses through the digital device data communication interface. The communication interface 3 connects the interface of the general signal conversion module 1 and the control unit 2 for data transmission. The control unit 2 is the core control unit of the feeder terminal, processing the communication data of the general signal conversion module 1.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A general-purpose signal conversion module, comprising a signal conversion module (1), characterized in that: The signal conversion module (1) includes a control unit (2), a communication interface (3), an AD (4), an electromagnetic acquisition and conversion unit (5), an electronic acquisition and conversion unit (6), and a digital decoding unit (7). The electromagnetic acquisition and conversion unit (5) and the electronic acquisition and conversion unit (6) are both connected to the AD (4). The AD (4) and the digital decoding unit (7) are both connected to the communication interface (3). The communication interface (3) is connected to the control unit (2).

2. The general signal conversion module according to claim 1, wherein: The communication interface (3) is provided with an electromagnetic signal interface (31), an electronic signal interface (32), a digital signal interface (33), and a core unit communication interface (34).

3. The general-purpose signal conversion module according to claim 2, characterized in that: The core unit communication interface (34) is connected to the control unit (2).

4. A general-purpose signal conversion module according to claim 1, characterized in that: The electromagnetic acquisition and conversion unit (5) includes a resistor R17, a voltage transformer, ferrite beads FB4, ferrite beads FB6, a resistor R21, a resistor R15, a resistor R19, a resistor R22, a resistor R24, a capacitor C23, a capacitor C25, diodes D8, D10, and a resistor voltage RV1.

5. A general-purpose signal conversion module according to claim 4, characterized in that: One end of the 1 terminal of the voltage transformer is connected to one end of the resistor R17. The 2 terminal of the voltage transformer and the other end of the resistor R17 are respectively connected to both ends of the resistor voltage RV1. One end of the 3 terminal of the voltage transformer is connected to one end of the ferrite bead FB6. The other end of the ferrite bead FB6 is respectively connected to one end of the resistor R21, the diode D10, one end of the resistor R24, and one end of the resistor R22. The other end of the resistor R22 is connected to one end of the capacitor C25. One end of the 4 terminal of the voltage transformer is connected to one end of the ferrite bead FB4. The other end of the ferrite bead FB4 is respectively connected to the other end of the resistor R21, one end of the diode D8, one end of the resistor R15, and one end of the resistor R19. The other end of the resistor R19 is connected to one end of the capacitor C23. The other ends of the capacitor C23, the resistor R15, the diode D8, the capacitor C25, the resistor R24, and the diode D10 are all grounded.

6. A general-purpose signal conversion module according to claim 1, characterized in that: The electronic acquisition and conversion unit (6) includes a power system T1, a voltage transformer TV10, and a metal oxide varistor MOV11.

7. A general-purpose signal conversion module according to claim 6, characterized in that: One end of the 1 terminal of the power system T1 is respectively connected to one end of the voltage transformer TV10 and one end of the metal oxide varistor MOV11. One end of the 2 terminal of the power system T1 is respectively connected to the other end of the voltage transformer TV10 and the other end of the metal oxide varistor MOV11. The 4 terminal of the power system T1 is connected to UA-N. The 6 terminal of the power system T1 is connected to UA-P. The 3 terminal of the power system T1 is grounded.

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