High reliability intelligent power distribution control switch and method with breakpoint recovery function

Abstract

The present invention discloses a high-reliability intelligent power distribution control switch and method with a breakpoint recovery function, wherein the input end of the power conversion unit is connected to the working power supply, and the output end of the power conversion unit includes a main control power rail and a power power rail, wherein the main control power rail is connected to the power supply port of the main control unit, and the power power rail is connected to the power supply port of each power unit; the hard-line control command port of the main control unit is connected to the hard-line control command, the status indicator port of the main control unit is connected to the status indicator, and the communication network port of the main control unit is connected to the communication network; the main control unit includes at least one group of I / O and AD port groups, and each group of I / O and AD port groups of the main control unit is connected to the I / O and AD port group of a power unit. The present invention improves the reliability of the intelligent power distribution control switch, enables the intelligent power distribution control switch to adapt to a more severe electromagnetic environment, and effectively promotes the technological progress of multi-electric / all-electric energy platforms.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent power distribution, and in particular to a high-reliability intelligent power distribution control switch and method with a breakpoint recovery function. Background Art

[0002] With the development of new technologies, the multi-electric / full-electric secondary energy of military and civilian equipment platforms such as aircraft, ships, and vehicles has become a development trend. The significant change of the multi-electric / full-electric energy platform is to unify secondary energy such as mechanical energy, hydraulic energy, and air pressure energy into electrical energy, so that all kinds of actuators are changed to electric form. However, with the increase in the number and types of electrical loads, the power consumption is gradually increasing. On the one hand, the requirements for the function, performance, and reliability of power distribution and management are getting higher and higher; on the other hand, high-power and multi-type electrical loads lead to an increasingly complex electromagnetic environment, which has caused additional interference to the reliability of the power supply and distribution control system. Summary of the invention

[0003] The present invention provides a high-reliability intelligent power distribution control switch and method with a breakpoint recovery function, which can improve the reliability of the intelligent power distribution control switch.

[0004] To solve the above problems, the present invention is achieved through the following technical solutions:

[0005] A high-reliability intelligent power distribution control switch with a breakpoint recovery function consists of a main control part and a power part; wherein the main control part includes a power conversion unit and a main control unit; the power part includes at least one power unit; the input end of the power conversion unit is connected to the working power supply, and the output end of the power conversion unit includes a main control power rail and a power power rail, wherein the main control power rail is connected to the power supply port of the main control unit, and the power power rail is connected to the power supply port of each power unit; the hard-line control command port of the main control unit is connected to the hard-line control command, the status indicator port of the main control unit is connected to the status indicator, and the communication network port of the main control unit is connected to the communication network; the main control unit includes at least one group of I / O and AD port groups, and each group of I / O and AD port groups of the main control unit is connected to the I / O and AD port group of a power unit.

[0006] In the above scheme, each group of I / O and AD port groups of the main control unit includes a control instruction output terminal, an instruction recovery input terminal, a contact recovery input terminal and a current recovery input terminal; the I / O and AD port group of each power unit includes a control instruction input terminal, an instruction recovery output terminal, a contact recovery output terminal and a current recovery output terminal; the control instruction output terminal of a group of I / O and AD port groups of the main control unit is connected to the control instruction input terminal of a power unit; the instruction recovery input terminal of a group of I / O and AD port groups of the main control unit is connected to the instruction recovery output terminal of a power unit; the contact recovery input terminal of a group of I / O and AD port groups of the main control unit is connected to the contact recovery output terminal of a power unit; the current recovery input terminal of a group of I / O and AD port groups of the main control unit is connected to the current recovery output terminal of a power unit.

[0007] In the above scheme, the main control unit is composed of a switch quantity isolation detection circuit, a display drive circuit, a communication interface circuit, and a main control processor system; the power supply ports of the main control processor system, the switch quantity isolation detection circuit, the display drive circuit and the communication interface circuit jointly form the power supply port of the main control unit; the signal input end of the switch quantity isolation detection circuit forms the hard-line control command port of the main control unit, and the signal output end of the switch quantity isolation detection circuit is connected to the input I / O port group of the main control processor system; the signal input end of the display drive circuit is connected to the output I / O port group of the main control processor system, and the signal output end of the display drive circuit forms the status indicator port of the main control unit; the control end of the communication interface circuit is connected to the communication control port of the main control processor system, and the communication end of the communication interface circuit forms the communication network port of the main control unit; at least one group of I / O and AD port groups of the main control processor system forms at least one group of I / O and AD port groups of the main control unit.

[0008] In the above scheme, a group of I / O and AD port groups of the main control processor system consists of a control I / O port, a first recovery I / O port, a second recovery I / O port and an AD port; the control I / O port forms the control instruction output end of the group of I / O and AD port groups; the first recovery I / O port forms the instruction recovery input end of the group of I / O and AD port groups; the second recovery I / O port forms the contact recovery input end of the group of I / O and AD port groups; and the AD port forms the current recovery input end of the group of I / O and AD port groups.

[0009] In the above scheme, the power unit is composed of a control instruction latch circuit, a power switch driving circuit, a power switch, a current collection circuit, and a passive contact detection circuit; the control instruction latch circuit, the power switch driving circuit, the current collection circuit, and the power supply port of the passive contact detection circuit form the power supply port of the power unit; the control instruction end of the control instruction latch circuit forms the control instruction input port of the I / O and AD port group of the power unit, and the control output end of the control instruction latch circuit forms the instruction recovery output end of the I / O and AD port group of the power unit; the control input end of the power switch driving circuit is connected to the control output end of the control instruction latch circuit, and the drive output end of the power switch driving circuit is connected to the control end of the power switch; one end of the power switch forms the first load power supply end of the power unit, and the other end of the power switch forms the power distribution output end of the power unit via the current collection circuit; the current recovery end of the current collection circuit forms the current recovery output end of the I / O and AD port group of the power unit; the passive contact detection circuit is connected in parallel with the power switch, and the contact recovery end of the passive contact detection circuit forms the contact recovery output end of the I / O and AD port group of the power unit.

[0010] In the above scheme, the power unit is composed of a control instruction latch circuit, a power switch drive circuit, a power switch, a current collection circuit, and an active contact detection circuit; the control instruction latch circuit, the power switch drive circuit, the current collection circuit, and the power supply port of the passive contact detection circuit form the power supply port of the power unit; the control instruction end of the control instruction latch circuit forms the control instruction input port of the I / O and AD port group of the power unit, and the control output end of the control instruction latch circuit forms the instruction recovery output end of the I / O and AD port group of the power unit; one end of the power switch forms the first load power supply end of the power unit, and the other end of the power switch forms the power distribution output end of the power unit via the current collection circuit; the current recovery end of the current collection circuit forms the current recovery output end of the I / O and AD port group of the power unit; the passive contact detection circuit is connected in parallel with the power load, and the contact state input end of the passive contact detection circuit.

[0011] In the above scheme, the power conversion unit is composed of a first EMC reinforcement module, an isolated power conversion module, and a second EMC reinforcement module; the input end of the first EMC reinforcement module forms the input end of the power conversion unit; the output end of the first EMC reinforcement module is connected to the input end of the isolated power conversion module; the output end of the isolated power conversion module is connected to the input end of the second EMC reinforcement module; and the output end of the second EMC reinforcement module forms the output end of the power conversion unit.

[0012] The high-reliability intelligent power distribution control method with breakpoint recovery function implemented by the above-mentioned high-reliability intelligent power distribution control switch comprises the following steps:

[0013] Step 1, the main control unit sets 5 status information for each power unit, namely, control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL;

[0014] Step 2, the main control unit converts the external hard-wire control command or the data sent by the communication network into the on or off control command of the corresponding power unit: when the control command of the power unit is identified as on, the control command state information bCMD of the power unit is set to 1; when the control command of the power unit is identified as off, the control command state information bCMD of the power unit is set to 0;

[0015] Step 3: After the value of the control command status information bCMD of the power unit is updated, the intelligent power distribution algorithm processing process of the power unit is started. The specific process is as follows:

[0016] Step 3.1, the main control unit reads the current value Cur of the power unit obtained after current recovery, and compares the current value Cur with the overload threshold value: if the current value Cur is greater than the overload threshold value, it means that the power unit is overloaded, and the overload status information bOL is set to 1; otherwise, it means that the power unit is not overloaded, and the overload status information bOL is set to 0;

[0017] Step 3.2, the main control unit determines the value of the overload status information bOL: if the overload status information bOL is not equal to 0, the control instruction status information bCTR is directly set to 0; otherwise, the value of the current control command status information bCMD is read and determined: if the control command status information bCMD is equal to 0, the control instruction status information bCTR is directly set to 0; otherwise, the control instruction status information bCTR is set to 1;

[0018] Step 3.3, the main control unit determines the value of the control instruction status information bCTR: if the control instruction status information bCTR is equal to 0, the main control unit outputs a shutdown control instruction to the power unit through the I / O and AD port group; otherwise, the main control unit outputs an opening control instruction to the power unit through the I / O and AD port group;

[0019] Step 3.4, the main control unit delays and waits for the power switch of the power unit to act;

[0020] Step 3.5, after the power switch of the power unit is actuated, the main control unit reads the command acquisition and contact acquisition information returned by the power unit, and updates the corresponding command acquisition status information bDRI and contact acquisition status information bDET according to the on or off status corresponding to the returned command acquisition and contact acquisition information;

[0021] Step 3.6, the main control unit displays five status information of the power unit through a status indicator or sends them out through a communication network, namely, control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL;

[0022] Step 3.7, return to step 3.1, execute the intelligent power distribution algorithm cyclically to realize intelligent power distribution control;

[0023] Step 4: The main control unit reads the reset status information to determine whether the main control unit is reset normally or abnormally.

[0024] When the main control unit is reset normally, 5 status information, namely control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL are all initialized to 0;

[0025] When the main control unit is abnormally reset, it first reads the instruction retrieval information of the power unit and updates the instruction retrieval status information bDRI: if the instruction retrieval status information bDRI is equal to 0, the control instruction status information bCTR is set to 0; otherwise, the control instruction status information bCTR is set to 1; then the status of the control instruction status information bCTR is judged: if the control instruction status information bCTR is equal to 0, the main control unit outputs a shutdown control instruction to the power unit through the I / O and AD port group; otherwise, the main control unit outputs an opening control instruction to the power unit through the I / O and AD port group.

[0026] Compared with the prior art, the present invention realizes breakpoint recovery based on the judgment result of the reset state of the main control processor system (normal reset or abnormal reset) and the external state information such as comprehensive control commands, control instructions, instruction recovery, contact recovery, current recovery and the memory data verification result of the processor, thereby further improving the reliability of the intelligent power distribution control switch, enabling the intelligent power distribution control switch to adapt to more severe electromagnetic environments, and effectively promoting the technological progress of multi-electric / all-electric energy platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a principle block diagram of a high-reliability intelligent power distribution control switch with breakpoint recovery function;

[0028] Figure 2 This is the principle block diagram of the main control part;

[0029] Figure 3 It is a principle block diagram of a power unit (passive contact detection scheme);

[0030] Figure 4It is a principle block diagram of another power unit (active contact detection scheme);

[0031] Figure 5 A flow chart of a high-reliability intelligent power distribution control method with a breakpoint recovery function;

[0032] Figure 6 This is the reset state processing program flow chart;

[0033] Figure 7 Flowchart of breakpoint recovery processing. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific examples.

[0035] A high reliability intelligent power distribution control switch with breakpoint recovery function, such as Figure 1 The main control part is composed of a main control part and a power part. The main control part is composed of a power conversion unit and a main control unit. The power part is composed of n power units with the same interface as the main control part, but different internal structures, parameters or uses of the units. The value of n is consistent with the number of I / O and AD port groups configured by the main control part as needed, and the minimum value is 1.

[0036] The input end of the power conversion unit is connected to the working power supply, and the output end of the power conversion unit is connected to the power supply port of the main control unit and each power unit. Figure 2 The power conversion unit is composed of a first EMC reinforcement module, an isolated power conversion module, and a second EMC reinforcement module. The input end of the first EMC reinforcement module forms the input end of the power conversion unit, and the input end of the power conversion unit is connected to the working power supply. The output end of the first EMC reinforcement module is connected to the input end of the isolated power conversion module. The output end of the isolated power conversion module is connected to the input end of the second EMC reinforcement module. The output end of the second EMC reinforcement module forms the output end of the power conversion unit, and the input end of the power conversion unit is divided into a main control power rail and a power power rail. The main control power rail is connected to the power supply port of each circuit inside the main control unit, and the power power rail is connected to the power supply port of each circuit inside each power unit of the power part.

[0037] The first EMC reinforcement module is used to perform EMC reinforcement on the input of the working power supply. On the one hand, it prevents the various electromagnetic interference signals received by the external working power supply and generated by itself from entering the interior of the product of this solution as much as possible, and on the other hand, it prevents the various electromagnetic interference signals generated inside the product of this solution from overflowing and interfering with the outside. The isolated power conversion module converts the wide range of the working power supply voltage to the stable voltage of the internal power rail, and on the other hand, it realizes the isolation of the external working power ground and the internal power rail ground, thereby providing an isolated and stable working power supply for the product of this solution. The second EMC reinforcement module is used to perform EMC reinforcement on the voltage output by the isolated power conversion module. On the one hand, it reduces the interference signals such as ripple and noise on the internal power rail as much as possible, and on the other hand, it suppresses the noise generated by the functional circuits of the main control unit and the power unit as much as possible, and reduces the interference to the external circuit after overflow. After the external working power is processed by the power conversion unit, it can not only provide power for the normal operation of the product of this solution, but also fundamentally strengthen the anti-interference ability of the product of this solution and improve the reliability.

[0038] The ports of the master control unit are connected to hard-wired control commands, status indicators, communication networks, master control power rails, and ports of each power unit. Figure 2 The main control unit is composed of a switch quantity isolation detection circuit, a display drive circuit, a communication interface circuit, and a main control processor system. The switch quantity isolation detection circuit is powered by the main control power rail, its signal input end is connected to the hard-line control command, and its signal output end is connected to the input I / O port group of the main control processor system. The display drive circuit is powered by the main control power rail, its signal input end is connected to the output I / O port group of the main control processor system, and its signal output end is connected to the status indicator. The communication interface circuit is powered by the main control power rail, its control end is connected to the communication control port of the main control processor system, and its communication end is connected to the communication network. The main control processor system is powered by the main control power rail. In addition to the above-mentioned input I / O port group, output I / O port group and communication control port, there are n groups of I / O and AD port groups, which are respectively connected to the ports of the corresponding groups of power units. Specifically, in each group of I / O and AD port group, the control I / O port provides a control command signal for the corresponding group of power units, the first recovery I / O port receives the command recovery signal of the corresponding group of power units, the second recovery I / O port receives the contact recovery signal of the corresponding group of power units, and the AD port receives the current recovery signal of the corresponding group of power units.

[0039] The switch quantity isolation detection circuit is used to isolate, detect and identify the hard-wired control commands. While providing a human-machine interface, it effectively improves the reliability of the product of this solution by protecting the input I / O port group of the main control processor system. The display drive circuit is used to provide a drive interface for the working status, health status and other status indicators of the product of this solution, and effectively improves the reliability of the product of this solution by protecting the output I / O port group of the main control processor system. The communication interface circuit is used for the product of this solution to communicate with the external communication network to achieve the communication needs required for command reception, status reporting, etc. In order to improve the reliability of the product, on the one hand, the communication interface needs to use a communication module with isolation capability to protect the communication control port of the main control processor system, and on the other hand, the communication parties need to perform necessary verification on the communication content, and the communication parties need to constrain each other and reset or initialize the communication control port when necessary. The main control processor system realizes intelligent control of the power part according to the hard-wired control command detection and identification or the control command issued by the communication network, and displays the working status, data, etc. through the status indicator, or reports through the communication network. The main control processor system can integrate information such as control commands, control instructions, instruction recovery, contact recovery, current recovery, and the reset state of the processor, and realize breakpoint recovery when the product of this solution is abnormally reset due to strong interference, so that the product of this solution can be restored to the working state before the abnormal reset, effectively improving the reliability of the product. The main control processor system is mainly composed of the minimum system of the processor chip used. Programmable logic devices (FPGA or CPLD), digital signal processors / controllers (DSP or DSC) or microprocessors (MCU) can be used as processor chips as needed. A high-performance processor with sufficient general I / O ports, communication control ports, AD ports and reset state detection functions should be selected.

[0040] The power unit ports are respectively connected to the power supply rail, the main control unit I / O and AD port group, the external load power supply and the power load.

[0041] See also Figure 3A power unit is composed of a control instruction latch circuit, a power switch driving circuit, a power switch, a current collection circuit, and a passive contact detection circuit. The power supply port of the control instruction latch circuit is connected to the power supply rail, the control instruction end is connected to the control I / O port of the main control unit I / O and AD port group, and the control output end is respectively connected to the control input end of the power switch driving circuit and the first recovery I / O port of the main control unit I / O and AD port group. The power supply port of the power switch driving circuit is connected to the power supply rail, the control input end is connected to the control output end of the control instruction latch circuit, and the drive output end is connected to the control end of the power switch. The power switch input end is connected to the first external load power supply end, and the power switch output end is connected in series with the current collection circuit to be the power distribution output end, the power distribution output end is connected to one end of the external power load, and the power switch control end is connected to the drive output end of the power switch driving circuit. In addition to being connected in series with the power switch, the current collection circuit has a power supply port connected to the power supply rail, and a current recovery end connected to the AD port of the main control unit I / O and AD port group. The power supply port of the passive contact detection circuit is connected to the power supply rail, the contact recovery end is connected to the second recovery I / O port of the main control unit I / O and AD port group, and the passive contact detection circuit is connected in parallel with the power load, that is, one end of the contact state input end is connected to the power distribution output end, and the other end is connected to the second load power supply end. After the external load power supply and the power load are connected in series, one end is the first load power supply end, and the other end is the distribution output end, and the connection between the two is the second load power supply end.

[0042] See also Figure 4Another power unit is composed of a control instruction latch circuit, a power switch driving circuit, a power switch, a current collection circuit, and an active contact detection circuit. The power supply port of the control instruction latch circuit is connected to the power supply rail, the control instruction end is connected to the control I / O port of the main control unit I / O and AD port group, and the control output end is respectively connected to the control input end of the power switch driving circuit and the first recovery I / O port of the main control unit I / O and AD port group. The power supply port of the power switch driving circuit is connected to the power supply rail, the control input end is connected to the control output end of the control instruction latch circuit, and the drive output end is connected to the control end of the power switch. The power switch input end is connected to the first external load power supply end, and the power switch output end is connected in series with the current collection circuit to be the power distribution output end, the power distribution output end is connected to one end of the external power load, and the power switch control end is connected to the drive output end of the power switch driving circuit. In addition to being connected in series with the power switch, the current collection circuit has a power supply port connected to the power supply rail, and a current recovery end connected to the AD port of the main control unit I / O and AD port group. The power supply port of the active contact detection circuit is connected to the power rail, the contact recovery end is connected to the second recovery I / O port of the main control unit I / O and AD port group, and the passive contact detection circuit is connected in parallel with the power switch, that is, one end of the contact state input end is connected to the first load power supply end, and the other end is connected to the connection end of the power switch and the current collection circuit. After the external load power supply and the power load are connected in series, one end is the first load power supply end, and the other end is the distribution output end, and the connection between the two is the second load power supply end.

[0043] The control instruction latch circuit is controlled by the control I / O port of the main control processor system, and latches the control instruction (turning on the power switch or turning off the power switch, which will be represented by on and off respectively in the future) according to the set latching rules (which can be implemented by industry insiders with digital circuit knowledge and will not be described in detail here) to ensure that the control instruction of the main processor system, which is most susceptible to interference, remains unchanged during the abnormal reset process. The output of the control instruction latch circuit forms the latched on or off control instruction, which is consistent with the latest control command (hard-line control command or program control command issued by the communication network, which is identified as on or off). On the one hand, the latched control instruction executes the corresponding on or off drive through the power switch drive circuit, and on the other hand, it is introduced into the first recovery I / O port of the main control processor system through instruction recovery, which is used for intelligent power distribution control and breakpoint recovery processing when necessary. The power switch drive circuit converts the high and low levels (i.e., latched on or off control instructions) of the conventional weak current signal into a drive signal that can drive the power switch to turn on or off according to the actual drive requirements of the power switch. The power switch is the actual executive electrical appliance of the intelligent power distribution control switch. According to different external load power supplies and load types, electromechanical power switches such as contactors and relays and solid-state power switches such as MOSFET, IGBT, and SCR are commonly used. The current acquisition circuit is used to collect the load current value after passing through the power switch, and after feeding back to the AD port of the main control processor system, it can be used for intelligent power distribution control and breakpoint recovery processing when necessary. The contact detection circuit is used to detect whether the contact state of the power switch is open or closed, and after feeding back to the second I / O port of the main control processor system, it can be used for intelligent power distribution control and breakpoint recovery processing when necessary. Generally speaking, affected by factors such as volume, weight, cost, and technical requirements, the contact detection circuit can be commonly divided into passive contact detection circuit and active contact detection circuit. The connection schemes of the two are slightly different. Please refer to the attached figure for details. The above latching rules, the characteristics of different power switches and their drive signal requirements, current acquisition circuits, contact detection circuits, etc. are all described by published patents, general application guidelines of component manufacturers and other professional knowledge, which will not be described in detail here.

[0044] The main control part and the power part can be assembled in a shell to form a closed shielded cavity, or the power conversion unit, the main control unit and n groups of power units can be assembled separately, and the power conversion unit can supply power to the main control unit and n groups of power units and realize distributed control of each power unit by the main control unit through inter-unit connections.

[0045] The power conversion unit provides the main control unit and the power unit with a main control power rail and a power power rail that are isolated from the external working power supply, have stable voltage, and have low noise interference. The main control unit controls the corresponding power unit to turn on or off according to the hard-line control command or the program control command issued by the communication network, and performs intelligent power distribution control according to the control instructions, contact status, current information, etc. fed back by the power unit, and performs breakpoint recovery when necessary to improve the reliability of the product of this solution. The main control unit reports the working status information through the communication network, outputs the working status through the communication network or the status indicator, and introduces manual intervention when necessary to improve the reliability of the product of this solution. The power unit latches and actuates the control instructions of the main control unit to realize intelligent power distribution execution, and feeds back the control instructions, contact status, current information, etc. to the main control unit.

[0046] The present invention uses a power conversion module for EMC reinforcement to provide an internal power rail for the main control module and the power module; uses the main control module to identify and process hard-line control commands and / or program control instructions sent by the communication interface, etc., to achieve on-off control and status monitoring of the power module, and to achieve status indication control and / or report status information via the communication interface; uses the power module to achieve power distribution control of different voltage levels, formats, and different current levels, and to achieve collection and reporting of working status. After breakpoint recovery processing, the reliability of the intelligent power distribution control switch can be effectively enhanced, and the stability of the operation of the power supply and distribution system of the multi-electric / all-electric energy platform can be improved, thereby promoting the improvement of the working performance level of the whole machine.

[0047] The switch implements a high-reliability intelligent power distribution control method with breakpoint recovery function, such as Figure 5 As shown, the specific steps include the following:

[0048] Step 1, the main control unit sets 5 status information control command status information bCMD, control instruction status information bCTR, instruction retrieval status information bDRI, contact retrieval status information bDET, overload status information bOL and check variable Check for each power unit, and stores them in groups in memory areas dispersed at more than 3 addresses.

[0049] The main control processor system sets 5 status information control command status information bCMD, control instruction status information bCTR, instruction retrieval status information bDRI, contact retrieval status information bDET, overload status information bOL and check variable Check for each power unit, and stores them in groups in 3 or more memory areas with dispersed addresses, such as RAM area 1, RAM area 2, and RAM area 3. The subsequent control command status information bCMD, control instruction status information bCTR, instruction retrieval status information bDRI, contact retrieval status information bDET, overload status information bOL and other 5 status information assignment updates indicate that the corresponding status variables and check variable Check in all RAM areas are updated synchronously.

[0050] Step 2, the main control unit converts the external input command into an on or off control command of the corresponding power unit. When the control command of a power unit is identified as on, the status information control command status information bCMD of the power unit is set to 1; when the control command of a power unit is identified as off, the status information control command status information bCMD of the power unit is set to 0.

[0051] The switch quantity isolation detection circuit adjusts the hard-wired control command into high and low levels and sends them to the input I / O port group for detection. The main control processor system samples the level state of the input I / O port group at a period T to obtain a high and low level combination, and identifies it as an on or off control command of the corresponding power unit according to the agreed coding scheme; or, after receiving the data sent by the communication network, the main control processor system parses certain data into an on or off control command of the corresponding power unit according to the communication protocol. The specific switch quantity coding scheme and communication protocol agreement scheme can be flexibly set according to relevant professional knowledge.

[0052] When the control command is recognized as on, the control command status information bCMD is set to 1 (the values ​​of control command status information bCMD, control instruction status information bCTR, instruction retrieval status information bDRI and contact retrieval status information bDET are 1, indicating that the relevant control or status is "on", the same below), otherwise, the control command status information bCMD is set to 0 (the values ​​of control command status information bCMD, control instruction status information bCTR, instruction retrieval status information bDRI and contact retrieval status information bDET are 0, indicating that the relevant control or status is "off", the same below). The control command recognition and control command status information bCMD assignment events are driven by interrupt response or independent thread form.

[0053] Step 3: When the value of the status information control command status information bCMD of a power unit is updated, the intelligent power distribution algorithm processing process of the power unit is started. The specific process is as follows:

[0054] Step 3.1: After the intelligent power distribution algorithm processing starts, the working state is initialized first, and then enters a periodic cycle. The cycle period T is determined by the processor computing power and the number of power unit groups, and the longest period does not exceed 20ms.

[0055] Step 3.2, the main control processor system reads the current recovery to obtain the current value Cur of the power unit, and compares the current value Cur with the overload threshold value: if it is greater than the overload threshold, it means that the power unit is overloaded and the power switch needs to be turned off to achieve overload protection, and the overload status information bOL is set to 1; otherwise, it means that the power unit is not overloaded and can respond to control commands normally, and the overload status information bOL is set to 0.

[0056] Step 3.3, after updating the value of the overload status information bOL, judge the value of the overload status information bOL: if the overload status information bOL is not equal to 0, then directly set the control instruction status information bCTR to 0; otherwise, read the value of the control command status information bCMD updated outside this cycle and make a judgment. If the control command status information bCMD is equal to 0, then directly set the control command status information bCTR to 0, otherwise set the control command status information bCTR to 1.

[0057] Step 3.4, after updating the value of the control instruction status information bCTR, the value of the control instruction status information bCTR is judged and the corresponding control output is performed. If the control instruction status information bCTR is equal to 0, the control instruction of shutting down is output to the power unit through the control I / O port, and is latched in the control instruction latch circuit of the power unit; otherwise, the control instruction of opening is output to the power unit through the control I / O port, and is latched in the control instruction latch circuit of the power unit.

[0058] Step 3.5: After the control instruction is latched, it is necessary to delay and wait for the power switch of the power unit to operate.

[0059] Step 3.6, after the power switch of the power unit is actuated, the main control processor system reads the command recovery and contact recovery levels returned by the power unit, and updates the corresponding command recovery status information bDRI and contact recovery status information bDET according to the on or off state corresponding to the level.

[0060] Step 3.7, update the status indication information through the display drive circuit or communication interface according to the five status information including control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET, and overload status information bOL.

[0061] Step 3.8: Return to step 3.2 and execute the intelligent power distribution algorithm in a loop to realize intelligent power distribution control.

[0062] Step 4: The main control unit realizes the breakpoint recovery of the intelligent power distribution control switch according to the reset state, which specifically includes the following steps:

[0063] After the main control processor system completes the boot program, it first reads the reset status information to determine whether the main control system is reset normally (such as reset caused by intentional operations such as power-on reset and manual reset) or abnormal reset (such as reset caused by unexpected operations such as electromagnetic interference causing the program to run away, fall into a trap, and the instruction code is destroyed):

[0064] Step 4.1: When the main control processor system is reset normally, the five status information including control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET, overload status information bOL are all initialized to 0, the check variable Check is calculated according to the set rules, and then stored in the RAM area in groups, and all power units are turned off. Figure 6 .

[0065] Step 4.2: In case of abnormal reset of the main control processor system, it is necessary to perform breakpoint recovery based on the RAM area data and comprehensive information such as instruction recovery, contact recovery, current recovery, etc., see Figure 7 , the specific process is as follows:

[0066] a) Read the status data of RAM area 1, RAM area 2, RAM area 3 and more RAM areas if necessary in sequence and perform verification;

[0067] b) If the data verification of RAM area 1 is correct, then go to step d), otherwise, perform data verification and judgment of the next RAM area in turn, if the data verification is correct, then go to step d), otherwise go to step c);

[0068] c) Read the instruction retrieval information and update the instruction retrieval status information bDRI. If the instruction retrieval status information bDRI is equal to 0, then set the control instruction status information bCTR to 0, otherwise, set the control instruction status information bCTR to 1;

[0069] d) Determine the state of the control instruction identification control instruction status information bCTR. If the control instruction status information bCTR is equal to 0, output the shutdown instruction through the control I / O port and latch it in the control instruction latch circuit; otherwise, output the opening instruction and latch it.

[0070] The present invention can intelligently control the power unit to connect or disconnect the power switch according to the on or off control command, thereby realizing intelligent power distribution control; and can realize breakpoint recovery of the intelligent power distribution control switch according to the reset state. The present invention obtains control commands by setting a switch quantity isolation detection circuit and / or a communication interface circuit, and realizes intelligent power distribution control of a multi-electric / all-electric energy platform by setting control instruction recovery, contact recovery, current recovery and updating corresponding status identifiers, and realizes breakpoint recovery through the comprehensive application of reset state, RAM area data and control instruction latch circuit and other technologies, so that the product of this solution can not only meet the requirements of the multi-electric / all-electric energy platform for power distribution and management functions and performance, but also has the characteristics of high reliability to adapt to the complex electromagnetic environment of the multi-electric / all-electric energy platform.

[0071] In the above method, the identification name, the number of RAM blocks, the physical meaning corresponding to the identification value, etc. are only used for example and do not constitute any restriction on rights.

[0072] It should be noted that although the embodiments of the present invention described above are illustrative, they are not intended to limit the present invention, and therefore the present invention is not limited to the above specific embodiments. Without departing from the principles of the present invention, any other embodiments obtained by those skilled in the art under the guidance of the present invention are deemed to be within the protection of the present invention.

Claims

1. High reliability intelligent power distribution control switch with breakpoint recovery function, characterized by: It is composed of a main control part and a power part; wherein the main control part includes a power conversion unit and a main control unit; the power part includes at least one power unit; the input end of the power conversion unit is connected to the working power supply, and the output end of the power conversion unit includes a main control power rail and a power power rail, wherein the main control power rail is connected to the power supply port of the main control unit, and the power power rail is connected to the power supply port of each power unit; the hard-line control command port of the main control unit is connected to the hard-line control command, the status indicator port of the main control unit is connected to the status indicator, and the communication network port of the main control unit is connected to the communication network; the main control unit includes at least one group of I / O and AD port groups, and each group of I / O and AD port groups of the main control unit is connected to the I / O and AD port group of a power unit; The high-reliability intelligent power distribution control method implemented therein comprises the following steps: Step 1, the main control unit sets 5 status information for each power unit, namely, control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL; Step 2, the main control unit converts the external hard-wire control command or the data sent by the communication network into the on or off control command of the corresponding power unit: when the control command of the power unit is identified as on, the control command state information bCMD of the power unit is set to 1; when the control command of the power unit is identified as off, the control command state information bCMD of the power unit is set to 0; Step 3: After the value of the control command status information bCMD of the power unit is updated, the intelligent power distribution algorithm processing process of the power unit is started. The specific process is as follows: Step 3.1, the main control unit reads the current value Cur of the power unit obtained after current recovery, and compares the current value Cur with the overload threshold value: if the current value Cur is greater than the overload threshold value, it means that the power unit is overloaded, and the overload status information bOL is set to 1; otherwise, it means that the power unit is not overloaded, and the overload status information bOL is set to 0; Step 3.2, the main control unit determines the value of the overload status information bOL: if the overload status information bOL is not equal to 0, the control instruction status information bCTR is directly set to 0; Otherwise, read the value of the current control command status information bCMD and make a judgment: if the control command status information bCMD is equal to 0, then directly set the control command status information bCTR to 0; otherwise, set the control command status information bCTR to 1; Step 3.3, the main control unit determines the value of the control instruction status information bCTR: if the control instruction status information bCTR is equal to 0, the main control unit outputs a shutdown control instruction to the power unit through the I / O and AD port group; otherwise, the main control unit outputs an opening control instruction to the power unit through the I / O and AD port group; Step 3.4, the main control unit delays and waits for the power switch of the power unit to act; Step 3.5, after the power switch of the power unit is actuated, the main control unit reads the command acquisition and contact acquisition information returned by the power unit, and updates the corresponding command acquisition status information bDRI and contact acquisition status information bDET according to the on or off status corresponding to the returned command acquisition and contact acquisition information; Step 3.6, the main control unit displays five status information of the power unit through a status indicator or sends them out through a communication network, namely, control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL; Step 3.7: Return to step 3.1 and execute the intelligent power distribution algorithm in a loop to realize intelligent power distribution control.

2. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 is characterized in that: Each I / O and AD port group of the main control unit includes a control command output terminal, a command recovery input terminal, a contact recovery input terminal and a current recovery input terminal; each I / O and AD port group of the power unit includes a control command input terminal, a command recovery output terminal, a contact recovery output terminal and a current recovery output terminal; A control instruction output end of a group of I / O and AD port groups of the main control unit is connected to a control instruction input end of a power unit; a command recovery input end of a group of I / O and AD port groups of the main control unit is connected to a command recovery output end of a power unit; a contact recovery input end of a group of I / O and AD port groups of the main control unit is connected to a contact recovery output end of a power unit; a current recovery input end of a group of I / O and AD port groups of the main control unit is connected to a current recovery output end of a power unit.

3. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 or 2, characterized in that: The main control unit is composed of a switch quantity isolation detection circuit, a display drive circuit, a communication interface circuit, and a main control processor system; The power supply ports of the main control processor system, the switch quantity isolation detection circuit, the display drive circuit and the communication interface circuit together form the power supply port of the main control unit; The signal input end of the switch quantity isolation detection circuit forms a hard-line control command port of the main control unit, and the signal output end of the switch quantity isolation detection circuit is connected to the input I / O port group of the main control processor system; the signal input end of the display drive circuit is connected to the output I / O port group of the main control processor system, and the signal output end of the display drive circuit forms a status indicator port of the main control unit; the control end of the communication interface circuit is connected to the communication control port of the main control processor system, and the communication end of the communication interface circuit forms a communication network port of the main control unit; at least one group of I / O and AD port groups of the main control processor system forms at least one group of I / O and AD port groups of the main control unit.

4. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 3 is characterized in that: A group of I / O and AD ports of the main control processor system is composed of a control I / O port, a first recovery I / O port, a second recovery I / O port and an AD port; The control I / O port forms the control instruction output terminal of the I / O and AD port group; the first recovery I / O port forms the instruction recovery input terminal of the I / O and AD port group; the second recovery I / O port forms the contact recovery input terminal of the I / O and AD port group; the AD port forms the current recovery input terminal of the I / O and AD port group.

5. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 or 2, characterized in that: The power unit is composed of a control instruction latch circuit, a power switch drive circuit, a power switch, a current acquisition circuit, and a passive contact detection circuit; The control instruction latch circuit, the power switch drive circuit, the current collection circuit, and the power supply port of the passive contact detection circuit form the power supply port of the power unit; the control instruction end of the control instruction latch circuit forms the control instruction input port of the I / O and AD port group of the power unit, and the control output end of the control instruction latch circuit forms the instruction recovery output end of the I / O and AD port group of the power unit; the control input end of the power switch drive circuit is connected to the control output end of the control instruction latch circuit, and the drive output end of the power switch drive circuit is connected to the control end of the power switch; one end of the power switch forms the first load power supply end of the power unit, and the other end of the power switch forms the power distribution output end of the power unit via the current collection circuit; the current recovery end of the current collection circuit forms the current recovery output end of the I / O and AD port group of the power unit; the passive contact detection circuit is connected in parallel with the power switch, and the contact recovery end of the passive contact detection circuit forms the contact recovery output end of the I / O and AD port group of the power unit.

6. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 or 2, characterized in that: The power unit is composed of a control instruction latch circuit, a power switch drive circuit, a power switch, a current acquisition circuit, and an active contact detection circuit; The control instruction latch circuit, the power switch drive circuit, the current collection circuit, and the power supply port of the passive contact detection circuit form the power supply port of the power unit; the control instruction end of the control instruction latch circuit forms the control instruction input port of the I / O and AD port group of the power unit, and the control output end of the control instruction latch circuit forms the instruction recovery output end of the I / O and AD port group of the power unit; one end of the power switch forms the first load power supply end of the power unit, and the other end of the power switch forms the power distribution output end of the power unit via the current collection circuit; the current recovery end of the current collection circuit forms the current recovery output end of the I / O and AD port group of the power unit; the passive contact detection circuit is connected in parallel with the power load, and the contact state input end of the passive contact detection circuit.

7. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 or 2, characterized in that: The power conversion unit is composed of a first EMC reinforcement module, an isolation power conversion module, and a second EMC reinforcement module; The input end of the first EMC reinforcement module forms the input end of the power conversion unit; the output end of the first EMC reinforcement module is connected to the input end of the isolation power conversion module; the output end of the isolation power conversion module is connected to the input end of the second EMC reinforcement module; the output end of the second EMC reinforcement module forms the output end of the power conversion unit.

8. The high-reliability intelligent power distribution control switch with breakpoint recovery function according to claim 1 is characterized in that: Further The steps include: Step 4: The main control unit reads the reset status information to determine whether the main control unit is reset normally or abnormally; When the main control unit is reset normally, 5 status information, namely control command status information bCMD, control instruction status information bCTR, instruction recovery status information bDRI, contact recovery status information bDET and overload status information bOL are all initialized to 0; When the main control unit is abnormally reset, the command recovery information of the power unit is read first, and the command recovery status information bDRI is updated: if the command recovery status information bDRI is equal to 0, the control command status information bCTR is set to 0; otherwise, the control command status information bCTR is set to 1; Then determine the status of the control instruction status information bCTR: if the control instruction status information bCTR is equal to 0, the main control unit outputs a shutdown control instruction to the power unit through the I / O and AD port group; otherwise, the main control unit outputs an opening control instruction to the power unit through the I / O and AD port group.

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