CN216118685U

CN216118685U - Power supply loop analysis tool based on CAN communication

Info

Publication number: CN216118685U
Application number: CN202122186100.6U
Authority: CN
Inventors: 吴迪; 李强光
Original assignee: Dilong New Energy Technology Hebei Co ltd
Current assignee: Dilong New Energy Technology Hebei Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-22
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a power supply loop analysis tool based on CAN communication, which comprises a computer upper computer, wherein one side of the computer upper computer is provided with a CAN communication device, and the power supply loop analysis tool takes the CAN communication as a bridge to enable the computer upper computer to establish data interaction with a power supply; different topology and closed-loop control modes are selected through a computer upper computer, and specific signals are injected into the reference of the power supply. The power supply loop analysis tool based on CAN communication realizes the loop analysis function on a computer, and reduces the use of instruments in the debugging process of a power supply; the signal injection and feedback are realized by using a program, and redundant electrical connection is omitted. The debugging step of the power supply is simplified; the tool can adapt to all the digital power supply products with the yield of a company, and is flexible and wide in application; the loop analysis parameters can be directly set through a computer, so that the flexibility and convenience of debugging the power supply are improved.

Description

Power supply loop analysis tool based on CAN communication

Technical Field

The utility model relates to the technical field of power supply loop analysis tools, in particular to a power supply loop analysis tool based on CAN communication.

Background

The CAN communication power supply has numerous models, different power supply topological structures are required to be selected when power supplies have different power and voltage grades, different loops are often required to be built when the power supply topological structures and the power supply topological structures are different, and the simulation effect of the loop building is often different from the actual operation effect of the power supplies. The traditional solution requires the purchase of expensive analysis tools such as spectrometers. The development cost of the power supply is greatly increased, the development period is invisibly increased, and therefore the power supply loop analysis tool based on CAN communication is provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the background technology, the utility model provides a power supply loop analysis tool based on CAN communication, which solves the problems provided by the background technology.

The utility model provides the following technical scheme: a power supply loop analysis tool based on CAN communication comprises a computer upper computer, wherein a CAN communication device is arranged on one side of the computer upper computer, and the power supply loop analysis tool takes CAN communication as a bridge to enable the computer upper computer to establish data interaction with a power supply;

different topology and closed-loop control modes are selected through a computer upper computer, specific signals are injected into the reference of a power supply, then the power supply sends feedback signals of a loop to the computer upper computer, and the upper computer displays open-loop and closed-loop gain and phase curves of the power supply loop to an engineer in a graphic mode through a series of complex operations.

Preferably, the power supply is used as a main controller of TMS320F 28035.

Preferably, the central processing unit is an efficient 32-bit TMS320F 28035.

Preferably, the system clock of the power supply loop analysis tool is 60MHz at most, has an integrated power-on under-voltage reset function and an enhanced CAN communication interface.

Preferably, the power loop analysis tool is provided with an ADC interface of 12Bbit precision and has a programmable control rate accelerator (CLA)32 bit floating point accelerator.

The utility model has the following beneficial effects: the power supply loop analysis tool based on CAN communication realizes the loop analysis function on a computer, and reduces the use of instruments in the debugging process of a power supply; the signal injection and feedback are realized by using a program, and redundant electrical connection is omitted. The debugging step of the power supply is simplified; the tool can adapt to all the digital power supply products with the yield of a company, and is flexible and wide in application; the loop analysis parameters can be directly set through a computer, so that the flexibility and convenience of debugging the power supply are improved.

Drawings

FIG. 1 is a functional block diagram of the power loop analysis tool of the present invention;

FIG. 2 is a schematic circuit diagram of a portion of the MCU of the present invention;

FIG. 3 is a CAN communication signal conversion circuit diagram according to the present invention;

FIG. 4 is a circuit diagram of a data acquisition portion of the present invention;

FIG. 5 is a circuit diagram of a data transmission portion of the present invention;

FIG. 6 is an enlarged circuit diagram of the left portion of FIG. 2 according to the present invention;

FIG. 7 is an enlarged circuit diagram of the middle portion of FIG. 2 according to the present invention;

fig. 8 is an enlarged circuit diagram of the right end portion of fig. 2 in accordance with the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The drawings in the embodiments of the utility model: the different types of hatching in the figures are not given the national standards, do not require the material of the elements, and distinguish between cross-sectional views of the elements in the figures.

Referring to fig. 1-8, a power supply loop analysis tool based on CAN communication includes a computer upper computer, one side of the computer upper computer is provided with a CAN communication device, and the power supply loop analysis tool uses CAN communication as a bridge to enable the computer upper computer and a power supply to establish data interaction;

The TMS320F28035 is used as a main controller of the power supply.

The central processing unit is an efficient 32-bit TMS320F 28035.

The system clock of the power supply loop analysis tool is 60MHz at most, has an integrated power-on under-voltage reset function and an enhanced CAN communication interface.

The power supply loop analysis tool is provided with an ADC interface with 12Bbit precision and is provided with a programmable control rate accelerator (CLA) 32-bit floating point accelerator.

It should be noted that the whole scheme of the tool takes CAN communication as a bridge, so that data interaction is established between the computer upper computer and the power supply. Different topology and closed-loop control modes are selected through an upper computer, specific signals are injected into the reference of a power supply, then the power supply sends feedback signals of a loop to the upper computer of the computer, and the upper computer displays open-loop and closed-loop gain and phase curves of the power supply loop to an engineer in a graphic mode through a series of complex operations. The overall structure is shown in figure 1:

the TMS320F28035 is used as a main controller of the scheme power supply, the TMS320F28035 is provided with a high-efficiency 32-bit central processing unit, the highest system clock is 60MHz, the integrated power-on under-voltage reset function is realized, and the integrated power-on under-voltage reset power supply has an enhanced CAN communication interface. An ADC interface with 12Bbit precision has a programmable control rate accelerator (CLA)32 bit floating point accelerator. The CPU portion is shown in FIG. 2 as follows:

and the TMS320F28035 CAN peripheral interface is used for converting the CAN communication isolation conversion chip into standard CAN communication data. The specific circuit is shown in fig. 3 as follows:

wherein CANTXA and CANRXA are respectively connected to pins corresponding to tms320f28035 CANTX and CANRX. Thereby realizing data communication data conversion.

The data acquisition module utilizes tms320f28035AD peripherals and responsive data signal processing circuitry as shown in FIG. 4 below: those not described in detail in this specification are within the skill of the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power supply loop analysis tool based on CAN communication, includes computer host computer, its characterized in that: a CAN communication device is arranged on one side of the computer upper computer, and the power supply loop analysis tool takes CAN communication as a bridge to enable the computer upper computer to establish data interaction with a power supply;

2. The CAN communication-based power loop analysis tool of claim 1, wherein: the power supply takes TMS320F28035 as a main controller.

3. The CAN communication-based power loop analysis tool of claim 1, wherein: the central processing unit is an efficient 32-bit TMS320F 28035.

4. The CAN communication-based power loop analysis tool of claim 1, wherein: the system clock of the power supply loop analysis tool is 60MHz at most, has an integrated power-on under-voltage reset function and an enhanced CAN communication interface.

5. The CAN communication-based power loop analysis tool of claim 1, wherein: the power loop analysis tool is provided with an ADC interface with 12Bbit precision and is provided with a programmable control rate accelerator (CLA) 32-bit floating point accelerator.