Device for safe conversion and controllable output of level

Abstract

The invention belongs to the technical field of electronic circuits, and provides a level safe conversion and controllable output device, which comprises a conversion circuit I, a conversion circuit II, a logic circuit A, a logic circuit B, an acquisition monitoring circuit A and an acquisition monitoring circuit B, the logic circuit A and the logic circuit B are mutually connected; the logic circuit A is connected with the conversion circuit I; the logic circuit B is connected with the conversion circuit I and the conversion circuit II; the first conversion circuit is connected with an external power supply and is connected with the second conversion circuit, and the second conversion circuit is connected with a using device and is used for converting a level provided by the external power supply into an adaptive level of the using device and outputting the adaptive level; and the acquisition monitoring circuit A and the acquisition monitoring circuit B are connected with the conversion circuit II to acquire adaptive level data and transmit the adaptive level data to the logic circuit A and the logic circuit B. According to the invention, an isolation architecture design, a hardware heterogeneous acquisition mode and dual AND logic are adopted, so that the safety and reliability of the device in the level conversion and output process are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a device for safe level conversion and controllable output. Background Art

[0002] With the continuous advancement of science and technology, the degree of production automation and intelligence is constantly improving. As a basic element of production and life, the conversion technology of electric energy has been widely used in industrial control, aerospace, civil life and other fields.

[0003] As level conversion devices gradually tend to be smaller, thinner, lighter and more high-frequency, current level conversion devices and methods mostly use power electronic devices to convert high-frequency and high-voltage signals. In this case, simple safety control can only be achieved through output monitoring, which limits its further improvement in safety and output controllability. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a device for safe level conversion and controllable output.

[0005] A device for safe level conversion and controllable output, the device comprising:

[0006] Conversion circuit 1, conversion circuit 2, logic circuit A, logic circuit B, acquisition monitoring circuit A and acquisition monitoring circuit B;

[0007] The logic circuit A and the logic circuit B are connected to each other for data communication, interaction and comparison;

[0008] The logic circuit A is connected to the conversion circuit 1 and is used to control the conversion circuit 1;

[0009] The logic circuit B is connected to the conversion circuit 1 and the conversion circuit 2, and is used to control the conversion circuit 1 and the conversion circuit 2;

[0010] The conversion circuit 1 is connected to an external power supply and connected to the conversion circuit 2, and the conversion circuit 2 is connected to the use device, and is used to convert the level provided by the external power supply into an adaptation level of the use device, and output the adaptation level;

[0011] The acquisition monitoring circuit A and the acquisition monitoring circuit B acquire the adaptation level data through the connection conversion circuit 2, monitor the electrical characteristics of the level in the adaptation level data, and transmit the adaptation level data to the logic circuit A and the logic circuit B.

[0012] Furthermore, by comparing and judging the interactive data between the logic circuit A and the logic circuit B, the safe output of the drive signal A and the drive signal B is achieved.

[0013] Further, the driving signal A generated by the logic circuit A and the driving signal B generated by the logic circuit B form a first-level logic “AND” control network;

[0014] The driving signal A generated by the logic circuit A and the chip operating voltage enable signal generated by the logic circuit B form a second-level logic “AND” control network.

[0015] Furthermore, based on the first-level logical “AND” control network and the second-level logical “AND” control network, the level provided by the external power supply is converted, and the fault is processed.

[0016] Furthermore, the conversion of the externally provided level based on the first-level logic “AND” control network and the second-level logic “AND” control network specifically includes:

[0017] When converting the level and outputting the adaptation level, the drive signal A and the chip working voltage enable signal control the conversion circuit 1, and the drive signal B controls the conversion circuit 2;

[0018] The conversion circuit 1 and the conversion circuit 2 convert the level provided by the external power supply into the adaptation level of the using device;

[0019] The logic circuit A and the logic circuit B respectively acquire and analyze the adaptation level data through the acquisition monitoring circuit A and the acquisition monitoring circuit B;

[0020] Based on the effective adaptation level data, the output voltage is dynamically adjusted according to the change of the level.

[0021] Furthermore, the processing of the fault based on the first-level logical “AND” control network and the second-level logical “AND” control network specifically includes:

[0022] When it is determined through comparison that there is a difference in the interactive data or the adaptation level data is invalid, fault processing is entered, and the drive signal A, the drive signal B and the chip working voltage enable signal are turned off, so that the conversion circuit 1 and the conversion circuit 2 stop working.

[0023] Furthermore, the adaptation level data is output voltage and current information.

[0024] Furthermore, the acquisition monitoring circuit A and the acquisition monitoring circuit B adopt a hardware heterogeneous manner.

[0025] Furthermore, the conversion circuit 1 and the conversion circuit 2 convert the level provided by the external power supply into an adaptation level of the device based on filtering, rectification and level conversion methods.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. High security. Conversion circuit 1, conversion circuit 2, logic circuit A and logic circuit B adopt isolation design. The two circuits work independently and do not affect each other, which enhances the circuit independence;

[0028] 2. It is intelligent and adopts double "AND" logic. Through the drive signal A generated by logic circuit A and the drive signal B generated by logic circuit B, the level conversion and output safety control are realized; at the same time, through the drive signal A generated by logic circuit A and the chip enable control signal generated by logic circuit B, the device failure caused by a single fault is avoided, thereby improving the safety and reliability of the control method;

[0029] 3. It is flexible and adopts closed-loop control to achieve flexible adjustment of level output;

[0030] 4. It has reliable data acquisition capability and adopts hardware heterogeneous acquisition method. It collects output level and current data through different hardware circuits to avoid common cause failure that causes abnormal data acquisition in logic circuit A and logic circuit B, thereby achieving reliability of data acquisition and enhancing the safety of the device.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a circuit flow chart of a device for safe level conversion and controllable output according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a device for safe level conversion and controllable output, such as Figure 1 As shown, the device includes: conversion circuit 1, conversion circuit 2, logic circuit A, logic circuit B, acquisition monitoring circuit A and acquisition monitoring circuit B;

[0036] The logic circuit A is electrically connected to the logic circuit B for data communication, interaction and comparison;

[0037] By comparing and judging the interactive data between the logic circuit A and the logic circuit B, the safe output of the drive signal A and the drive signal B is realized;

[0038] The logic circuit A is electrically connected to the conversion circuit 1 and is used to control the conversion circuit 1;

[0039] The logic circuit B is electrically connected to the conversion circuit 1 and the conversion circuit 2, and is used to control the conversion circuit 1 and the conversion circuit 2;

[0040] The conversion circuit 1 is connected to an external power supply and connected to the conversion circuit 2, and the conversion circuit 2 is connected to the use device, and is used to convert the level provided by the external power supply into an adaptation level of the use device, and output the adaptation level;

[0041] The acquisition monitoring circuit A and the acquisition monitoring circuit B are electrically connected to the conversion circuit 2 to collect the adaptation level data, monitor the electrical characteristics of the level in the adaptation level data, and transmit the adaptation level data to the logic circuit A and the logic circuit B; wherein, the acquisition monitoring circuit A and the acquisition monitoring circuit B adopt a hardware heterogeneous manner.

[0042] The driving signal A generated by the logic circuit A and the driving signal B generated by the logic circuit B form a first-level logic “AND” control network;

[0043] The driving signal A generated by the logic circuit A and the chip working voltage enable signal generated by the logic circuit B form a second-level logic “AND” control network;

[0044] Based on the first-level logic "AND" control network and the second-level logic "AND" control network, the level provided by the external power supply is converted and the fault is processed, including:

[0045] When converting the level and outputting the adaptation level, the drive signal A and the chip working voltage enable signal control the conversion circuit 1, and the drive signal B controls the conversion circuit 2;

[0046] The conversion circuit 1 and the conversion circuit 2 convert the level provided by the external power supply into the adaptation level of the device using the method of filtering, rectification and level conversion, and output the adaptation level;

[0047] The logic circuit A and the logic circuit B respectively acquire and analyze the adaptation level data through the acquisition monitoring circuit A and the acquisition monitoring circuit B;

[0048] Based on the effective adaptation level data, the output voltage is dynamically adjusted according to the change of the level, which effectively improves the flexibility of the device; wherein the adaptation level data is the output voltage and current information.

[0049] When it is determined through comparison that there is a difference in the interactive data or the adaptation level data is invalid, fault processing is entered, and the drive signal A, drive signal B and chip working voltage enable signal are turned off, so that conversion circuit 1 and conversion circuit 2 stop working, thereby achieving the safety of the device output.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for safe level conversion and controllable output, characterized in that: The device comprises: conversion circuit 1, conversion circuit 2, logic circuit A, logic circuit B, acquisition monitoring circuit A and acquisition monitoring circuit B; The logic circuit A and the logic circuit B are connected to each other for data communication, interaction and comparison; The logic circuit A is connected to the conversion circuit 1 and is used to control the conversion circuit 1; The logic circuit B is connected to the conversion circuit 1 and the conversion circuit 2, and is used to control the conversion circuit 1 and the conversion circuit 2; The conversion circuit 1 is connected to an external power supply and connected to the conversion circuit 2, and the conversion circuit 2 is connected to the use device, and is used to convert the level provided by the external power supply into an adaptation level of the use device, and output the adaptation level; The acquisition monitoring circuit A and the acquisition monitoring circuit B acquire the adaptation level data through the connection conversion circuit 2, monitor the electrical characteristics of the level in the adaptation level data, and transmit the adaptation level data to the logic circuit A and the logic circuit B.

2. The device according to claim 1, characterized in that By comparing and judging the interactive data between the logic circuit A and the logic circuit B, the safe output of the drive signal A and the drive signal B is achieved.

3. The device according to claim 1, characterized in that The driving signal A generated by the logic circuit A and the driving signal B generated by the logic circuit B form a first-level logic "AND" control network; The driving signal A generated by the logic circuit A and the chip operating voltage enable signal generated by the logic circuit B form a second-level logic "AND" control network.

4. The device according to claim 3, characterized in that Based on the first-level logic "AND" control network and the second-level logic "AND" control network, the level provided by the external power supply is converted and the fault is processed.

5. The device according to claim 4, characterized in that The conversion of the externally provided level based on the first-level logic "AND" control network and the second-level logic "AND" control network specifically includes: When converting the level and outputting the adaptation level, the drive signal A and the chip working voltage enable signal control the conversion circuit 1, and the drive signal B controls the conversion circuit 2; The conversion circuit 1 and the conversion circuit 2 convert the level provided by the external power supply into the adaptation level of the using device; The logic circuit A and the logic circuit B respectively acquire and analyze the adaptation level data through the acquisition monitoring circuit A and the acquisition monitoring circuit B; Based on the effective adaptation level data, the output voltage is dynamically adjusted according to the change of the level.

6. The device according to claim 4, characterized in that The processing of the fault based on the first-level logic "AND" control network and the second-level logic "AND" control network specifically includes: When it is determined through comparison that there is a difference in the interactive data or the adaptation level data is invalid, fault processing is entered, and the drive signal A, the drive signal B and the chip working voltage enable signal are turned off, so that the conversion circuit 1 and the conversion circuit 2 stop working.

7. The device according to claim 5, characterized in that The adaptation level data is output voltage and current information.

8. The device according to claim 1, characterized in that The acquisition monitoring circuit A and the acquisition monitoring circuit B adopt a hardware heterogeneous manner.

9. The device according to claim 1, characterized in that The conversion circuit 1 and the conversion circuit 2 convert the level provided by the external power supply into the adaptation level of the device using the method of filtering, rectification and level conversion.

Images