CN105763042A - Control device and power conversion device - Google Patents
Control device and power conversion device Download PDFInfo
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- CN105763042A CN105763042A CN201410800136.0A CN201410800136A CN105763042A CN 105763042 A CN105763042 A CN 105763042A CN 201410800136 A CN201410800136 A CN 201410800136A CN 105763042 A CN105763042 A CN 105763042A
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Abstract
The invention relates to a control device and a power conversion device. The control device and the power conversion device have a communication function for users and a communication function for debugging. The control device (Cnt1) is provided with a bus (BUS), a central computation processing part (CPU) which is connected with the bus and performs system processing, a communication part (DMU) which is connected with the bus and the central computation processing part, wherein the communication part can parallelly execute serial communication between a plurality of external devices (Cnt2, IFD) with Baud rate-varied communication functions, and can set the action modes of the communication part according to serial data outputted by the plurality of external devices.
Description
Technical field
The present invention relates to the control device and power inverter with user's communication function and debugging communication function.
Background technology
Disclosed in application publication number CN103150283A (Japanese Unexamined Patent Publication 2013-120979) a kind of MCU (MicroControlUnit: micro-control unit), it has the asynchronous Serial Communication Function based on UART (UniversalAsynchronousReceiverTransmitter: UART Universal Asynchronous Receiver Transmitter) mode, and realizes debugging function via an order wire.Each node of a piece order wire is driven by open-drain and is pulled to power supply such that it is able to carry out half dual transmitting-receiving process.
Above-mentioned MCU, in order to make the communication node of self consistent with the baud rate between the communication node of debugging terminal, as the initial setting before communication process, sends the data of 0x55 etc. to debugging by terminal.Then, the debugging High width of this pulse of terminal meter and Low width.Debugging terminal is capable of identify that the baud rate of MCU, and therefore MCU and debugging terminal are able to ensure that communication each other.
Being applied to when controlling device of power inverter at above-mentioned MCU, MCU is integrated in a semiconductor substrate or in a semiconductor module together with drive division, constitutes the control device of power inverter.Drive division receives the signal of each several part of power inverter, carries out driving and the protection act of power inverter.Additionally, in the configuration aspects of power inverter, MCU is sometimes for user's communication function and debugging communication function.User is for controlling the Serial Communication Function of transmitting-receiving driving instruction and abnormal signal between device and other control systems with communication function.User with communication function such as from the state being in upper entirety management host function in system, when being received instruction or order by power inverter and change operating state, or when parallel drive multiple stage power inverter, necessity for each control device communicates each other.Debugging communication function is for the debugging terminal Serial Communication Function to the flash memory in the program of MCU, debugging and deletion and write MCU.Generally, user's communication function and debugging communication function are independent, are respectively provided with independent communication terminal.Such as, debugging communication function is connected closely with the sheet sand covered function (On-chipdebugfunction) of CPU.Additionally, user's communication function is connected with internal bus in the same manner as the periphery function of MCU, output interrupt request singal and the event as required of being configured to produces signal.
About controlling device, except above-mentioned communication function, also require to realize the multifunction of the high accuracy driving etc. of power inverter, on the other hand, for realizing the miniaturization of power inverter, it is desirable to control the downsizing of the chip size of device self or the reduction of the number of pins of module.
Summary of the invention
The present invention is by simple structure, it is provided that a kind of control device with user's communication function and debugging communication function and power inverter.
The control device (Cnt1) of the present invention is characterised by having:
Bus (BUS)；
Central operation process portion (CPU), it is connected with described bus, carries out system process；And
One communication unit (DMU), it is connected with described bus and described central operation process portion,
Described communication unit has following function: the function of the function being performed in parallel serial communication between multiple external device (ED)s (Cnt2, IFD) with baud rate communication function different from each other and the action pattern setting described communication unit according to the serial data exported from the plurality of external device (ED).
In accordance with the invention it is possible to by simple structure, it is provided that a kind of control device with user's communication function and debugging communication function and power inverter.
Accompanying drawing explanation
Fig. 1 indicates that the circuit block diagram of the structure example of the power inverter PCD of embodiment of the present invention.
Fig. 2 indicates that the block diagram of the structure example in the main portion of the serial communication system (only telex network) controlling device including embodiment of the present invention.
Fig. 3 indicates that the block diagram of the structure example in the main portion of the serial communication system (telex network communicates) controlling device including embodiment of the present invention with debugging.
Fig. 4 indicates that in the serial communication system of Fig. 2 and Fig. 3, the state transition diagram of the main actions example of communication unit DMU.
Fig. 5 indicates that in the serial communication system of Fig. 2, the explanation figure of action example when only carrying out telex network.
Fig. 6 indicates that in the serial communication system of Fig. 3, carries out the explanation figure of telex network and the action example debugged when communicating.
Fig. 7 indicates that the block diagram of the structure example in the main portion at the serial communication system (debugging system) controlling device comprising variation of the present invention.
Detailed description of the invention
The control device Cnt1 of the present invention has: A/D converter section ADC, and it carries out A/D conversion to from the power model PM signal of telecommunication exported and generate numerical data；Signal processing part DSP, it carries out calculation process to via the bus B US numerical data inputted；Drive division DRV, it drives power model PM according to the operation result of signal processing part DSP；Central operation process portion CPU, it is connected with bus B US, carries out system process；And communication unit DMU (DualModeUART: bimodulus UART), it is connected with bus B US and central operation process portion CPU, and have and the Serial Communication Function of multiple external device (ED)s, set action pattern according to the serial data exported from multiple external device (ED)s.
Fig. 1 indicates that the circuit block diagram of the structure example of the power inverter PCD of embodiment of the present invention.Power inverter PCD has control device Cnt1 and power model PM.Control device Cnt1 to be connected with power model PM and test section R1, R2, be connected to multiple external device (ED) described later via communication terminal Tc.Control device Cnt1 and there is A/D converter section ADC, signal processing part DSP, drive division DRV, central operation process portion CPU, communication unit DMU (DualModeUART), bus B US, memorizer ROM/RAM, D/A converter section DAC, comparing section CMP and communication terminal Tc.
The input terminal of A/D converter section ADC is connected with test section R1, R2, and lead-out terminal is connected with each several part controlling device Cnt1 via bus B US.A/D converter section ADC is taken into the signal of telecommunication from power model PM output via test section R1, R2, the signal of telecommunication is carried out A/D conversion and generates numerical data, exporting numerical data to bus B US.
Signal processing part DSP is connected with bus B US, it is taken into above-mentioned numerical data via bus B US, above-mentioned numerical data is carried out calculation process (based on long-pending and computing phase compensation etc.), via bus B US, operation result (PWM duty cycle value) is exported to drive division DRV.
The input terminal of comparing section CMP is connected with power model PM and D/A converter section DAC, and the lead-out terminal of comparing section CMP is connected with drive division DRV.Comparing section CMP such as compares and detection of excessive current state based on the voltage of the electric current flow through in power model PM and the output voltage of D/A converter section DAC, exports detection signal to drive division DRV.
The input terminal of drive division DRV is connected with bus B US and comparing section CMP, and lead-out terminal is connected with power model PM.Drive division DRV generates the driving signal (pwm signal) corresponding to above-mentioned operation result (PWM duty cycle value), exports driving signal to power model PM.Additionally, when comparing section CMP detects the overcurrent condition of power model PM, drive division DRV reduces PWM duty cycle value, the magnitude of current of restriction power model PM.Specifically, drive division DRV has driving signal generating unit PWM and drives signal output portion OUT.The input terminal driving signal generating unit PWM is connected with signal processing part DSP and comparing section CMP, and lead-out terminal is connected with driving signal output portion OUT.The input terminal driving signal output portion OUT is connected with driving signal generating unit PWM, and lead-out terminal is connected with power model PM.Drive signal generating unit PWM to generate above-mentioned driving signal, and export to driving signal output portion OUT.Signal output portion OUT is driven to amplify above-mentioned driving signal and export to power model PM.
The input terminal of central operation process portion CPU and lead-out terminal are connected with each several part controlling device Cnt1 via bus B US, and are connected with communication unit DMU.Central operation process portion CPU according to from bus B US and the communication unit DMU signal being taken into, carry out power model PM with control the abnormality detection of device Cnt1, protection processes and the communicating and the systematic process of log recording etc. of external device (ED).
The input terminal of communication unit DMU and lead-out terminal are connected with central operation process portion CPU, bus B US and a communication terminal Tc.Communication unit DMU has following function: the function of the function being performed in parallel serial communication between multiple external device (ED)s with baud rate communication function different from each other and the action pattern setting described communication unit according to the serial data exported from the plurality of external device (ED).That is, communication unit DMU can be connected with multiple external device (ED)s via communication terminal Tc, it is possible to makes the serial communication of the multiple external device (ED)s different from baud rate mixedly process.
Power model PM and input power Vin, load Ro, test section R1, R2 and control device Cnt1 are connected.Power model PM has transistor Tr, diode Di, reactor L and capacitor C.Transistor Tr is such as MOSFET, has the 1st main terminal (drain electrode), the 2nd main terminal (source electrode) and control terminal (grid).The control terminal of transistor Tr is connected with the drive division DRV controlling device Cnt1.Control device Cnt1 to control terminal output drive signal, transistor Tr being carried out ON-OFF driving or Linear Driving, thus desired output power being converted to from the input power Vin input electric power exported, and output power being exported to load Ro.The power model PM of Fig. 1 has the circuit structure of nonisulated voltage-dropping type, but can also be replaced into the known circuit structure that input electric power is converted into desired output power.
Fig. 2 and Fig. 3 indicates that the block diagram of the structure example in the main portion of the serial communication system (when communicating during telex network) controlling device comprising embodiment of the present invention with debugging.Fig. 4 indicates that in the serial communication system of Fig. 2 and Fig. 3, the state transition diagram of the main action example of communication unit DMU.Fig. 5 indicates that in the serial communication system of Fig. 2, the explanation figure of action example when only carrying out telex network.Fig. 6 indicates that in the serial communication system of Fig. 3, carries out the explanation figure of telex network and the action example debugged when communicating.
The structure of Fig. 2 is to control structure example when device Cnt1 is applied to include in the system etc. of power inverter PCD, it is shown that have control device Cnt1 and external device (ED) Cnt2, situation about only communicating between communication unit DMU and external device (ED) Cnt2.Control device Cnt1 to be connected with external device (ED) Cnt2 via communication terminal Tc.
In the present embodiment, communication path is 1 wire type, shares 1 line when receiving and dispatching.Sender makes order wire need to make the NMOS of output circuit to be ON when being LOW level, and making communication lines need when being HIGH to make NMOS is OFF, by outside pull-up resistor lift level.The manner is cannot receive and dispatch half dual mode of different pieces of information each other at communication phase hands simultaneously, but is effective method for the MCU that number of terminals is restricted.
External device (ED) Cnt2 is the upper control device of serial communication system, carries out user with communicating with controlling device Cnt1.In controlling device Cnt1, communication unit DMU has determination part BRM (BaudRateMeasurement: baud rate detects), communication control unit CC (CommunicationController: communication controler) and transfer part UART1.Determination part BRM is connected with communication control unit CC, transfer part UART1 and communication terminal Tc.Communication control unit CC and transfer part UART1 and bus B US is connected, and interrupt request singal and the event of output telex network produce signal.Transfer part UART1 is connected with communication terminal Tc.Communication control unit CC is connected with central operation process portion CPU, but this path does not use in the mode of Fig. 2, and the situation of the Fig. 3 for next illustrating.
Structure example when the structure of Fig. 3 is the program development controlling device Cnt1 and when debugging, has control device Cnt1, external device (ED) Cnt2, debugging terminal D T and interface arrangement IFD.Interface arrangement IFD has the usb communication portion for being connected and high speed baud rate side and the UART communication unit of low speed baud rate side with debugging terminal D T.Control device Cnt1 to be connected with the UART communication unit of the high speed baud rate side of interface arrangement IFD via communication terminal Tc and adapter.That is, communication terminal Tc is the terminal being connected with communication unit DMU and can being connected with external device (ED) Cnt2 or interface arrangement IFD.External device (ED) Cnt2 is connected via the UART communication unit of adapter with the low speed baud rate side of interface arrangement IFD.Debugging terminal D T is connected with interface arrangement IFD via usb communication portion.Control device Cnt1 to be connected with external device (ED) Cnt2 and debugging terminal D T via interface arrangement IFD, carry out user with external device (ED) Cnt2 with communicating, and carry out debugging with debugging terminal D T with communicating.It addition, the baud rate of user's communication is low speed (such as less than 100Kbps), the baud rate of debugging communication is at a high speed (such as at more than 100Kbps).
In Fig. 2 and Fig. 3 arbitrary structures, determination part BRM measures baud rate according to from the serial data exported when system initialization via the communication terminal Tc external device (ED) connected.Additionally, the action pattern that communication control unit CC is according to the measurement result setup control device Cnt1 of determination part BRM.By these functions, a communication unit DMU is made to possess user's communication function and debugging communication function such that it is able to suppress adding of communication terminal Tc, simplify the structure controlling device Cnt1.
The following describes the action example of the communication unit DMU of the serial communication system of Fig. 2 and Fig. 3.Communication unit DMU has original state IDLE, baud rate mensuration state BAUD, telex network state USER, debugging holding state DBG_IDLE, user sends state USR_TXD, user receives state USR_RXD and debugging communications status DBG_CPU.
First, under original state IDLE, communication unit DMU is transferred to baud rate and measures state BAUD by communication control unit CC when the trailing edge of the RXD receiving signal being detected.Measuring under state BAUD, as with the communications transaction of external device (ED) before initialization, determination part BRM measures the baud rate with external device (ED), and communication control unit CC sets the action pattern of communication unit DMU.Now, from external device (ED) to controlling the serial pulses waveform (start bit=1, data=8, stopping position=1) that device Cnt1 imparting is such as 0x55, measure its High width and Low width, identify baud rate.
When the measurement result of determination part BRM is less than certain value (such as 100Kbps), communication unit DMU is transferred to telex network state USER by communication control unit CC so that it is is only used as telex network UART and is operated.Under telex network state USER, control device Cnt1 and carry out UART action with the low speed baud rate measured under measuring state BAUD.Therefore, in the structure of Fig. 2, owing to the determination part BRM baud rate measured is less than the value of regulation, therefore communication control unit CC sets the 1st action pattern, under the 1st action pattern, carries out serial communication with low speed baud rate with external device (ED) Cnt2.
In addition, when the measurement result of determination part BRM is more than certain value (such as 100Kbps), communication unit DMU is transferred to debugging holding state DBG_IDLE by communication control unit CC, makes communication unit DMU double as and uses UART for telex network UART with debugging to communicate.Under debugging holding state DBG_IDLE, control device Cnt1 and constantly the order inputted from external device (ED) is decoded.Therefore, in the structure in figure 3, owing to the determination part BRM baud rate measured is more than the value of regulation, therefore communication control unit CC sets the 2nd action pattern, under the 2nd action pattern, carry out serial communication with high speed baud rate with interface arrangement IFD, and carry out serial communication via interface arrangement IFD and external device (ED) Cnt2.Under debugging holding state DBG_IDLE, not from external device (ED) input order, communication unit DMU is transferred to user and sends state USR_TXD by communication control unit CC.Under user sends state USR_TXD, when transmission data enter transmission buffer memory (such as tx_shift_reg sends shift register) of telex network, control device Cnt1 and transmission data are sent to interface arrangement IFD.Hereafter, communication unit DMU reverts to debugging holding state DBG_IDLE.Now, control device Cnt1 and carry out UART action with the high speed baud rate measured under measuring state BAUD.
Under debugging holding state DBG_IDLE, if controlling device Cnt1 to receive order USR_RXD, then communication unit DMU is transferred to user and receives state DBG_RXD by communication control unit CC.And then, control device Cnt1 and receive the data sending 1 byte come from external device (ED), and be stored in the reception buffer memory of telex network (such as rx_shift_reg receives shift register), if it is required, then output interrupt request singal and event produce signal.Hereafter, communication unit DMU is transferred to user and sends state USR_TXD, if it is desired, then carries out above-mentioned user's transmission and processes.Even if in this series of course of action, control device Cnt1 and also communicate action with the high speed baud rate measured under measuring state BAUD.
Under debugging holding state DBG_IDLE, if controlling device Cnt1 to receive the order forDBG (for DBG) of debugging communications transaction, then communication unit DMU is transferred to debugging communications status DBG_CPU by communication control unit CC.Under debugging communications status DBG_CPU, control device Cnt1 and carry out the process with debugging communication, until completing debugging sequence.In debugging sequence, communication control unit CC receives and dispatches debugging between central operation process portion CPU and processes required order and data.Even if in this series of course of action, control device Cnt1 and also carry out UART action with the high speed baud rate measured in measuring state BAUD.Hereafter, communication unit DMU is transferred to user and sends state USR_TXD, if it is desired, then carries out above-mentioned user's transmission and processes.That is, control device Cnt1 and carry out the transmitting-receiving action of telex network data when not carrying out debugging communications transaction.
As mentioned above, control device Cnt1 and switch the action pattern of communication unit DMU according to the measurement result of baud rate, therefore, it is possible to be attached by multiple external device (ED)s different from baud rate for communication unit DMU and communicate, adding of communication terminal Tc can be suppressed, simplify the structure controlling device Cnt1.In addition, when communication unit DMU double as into telex network UART with debugging communicate use UART, control the device Cnt1 action pattern according to the order switching communication unit DMU of external device (ED), therefore by combined interface device IFD, it is possible to finally realize simultaneously different from baud rate multiple external device (ED)s by a communication unit DMU and be attached and communicate.
As it has been described above, the present invention is described by embodiment, but the discussion of a part for the composition disclosure and accompanying drawing should not be construed as limiting the present invention.According to the disclosure, those of ordinary skill in the art are it should be understood that various alternate embodiments, embodiment and application technology.That is, the present invention includes not various embodiments described here etc. certainly.Therefore, by invention for appropriate claims according to the above description and clearly, the technical scope of the present invention should determine that item is determined.Such as, control device Cnt1 and be not limited to be applied in the system comprising power inverter PCD, be also applied in the system of serial communication of needs and external device (ED).In addition, when being only limitted to carry out debugging communication to only carry out the write of the onboard flash memory of MCU, as shown in Figure 7, it is possible to be directly connected to control device Cnt1 and external device (ED) Cnt2, and connect control device Cnt1 and debugging terminal D T via interface arrangement IFD.Additionally, the threshold value of the baud rate of the action pattern of switching communication unit DMU is according to suitably can setting with the baud rate controlling the device Cnt1 external device (ED) being connected.Additionally, as the structure of power model, it is possible to suitably changing insulation and the quantity etc. of nonisulated, boosting and buck and transistor unit, the structure for input electric power being converted to the output power with desired voltage, electric current and frequency can being adopted.Additionally, the signal output portion OUT that drives constituting drive division DRV can be arranged on the semiconductor substrate different from driving signal generating unit PWM.Additionally, this invention is not limited to be applied in the serial communication of 1 wire type, moreover it is possible to be applied in the serial communication of 2 wire types.
Claims (9)
1. one kind controls device (Cnt1), it is characterised in that have:
Bus (BUS)；
Central operation process portion (CPU), it is connected with described bus, and carries out system process；And
One communication unit (DMU), it is attached with described bus and described central operation process portion,
Described communication unit has following function:
It is performed in parallel serial communication between multiple external device (ED)s (Cnt2, IFD) of the communication function different from each other with having baud rate；And
The action pattern of described communication unit is set according to the serial data exported from the plurality of external device (ED).
2. control device according to claim 1, it is characterised in that
Described communication unit has determination part (BRM), and this determination part (BRM) measures baud rate according to the serial data exported from the plurality of external device (ED).
3. control device according to claim 2, it is characterised in that
Described communication unit has communication control unit (CC), and this communication control unit (CC) sets described action pattern according to the measurement result of described determination part.
4. control device according to claim 3, it is characterised in that
Described communication control unit
When the baud rate measured by described determination part is less than the value of regulation, set the 1st action pattern, under the 1st action pattern, it is possible to communicate with the 1st baud rate and the 1st external device (ED) (Cnt2),
Time more than the value that the baud rate measured by described determination part is regulation, set the 2nd action pattern, under the 2nd action pattern, to communicate higher than the 2nd baud rate of described 1st baud rate and the 2nd external device (ED) (IFD, DT), and can communicate via the 2nd external device (ED) (IFD) and the 1st external device (ED).
5. control device according to claim 1, it is characterised in that
This control device has at least 1 terminal (Tc), and this at least 1 terminal (Tc) and described communication unit are attached, and can be attached with described 1st external device (ED) (Cnt2) or the 2nd external device (ED) (IFD).
6. control device according to claim 5, it is characterised in that
Described at least 1 terminal either directly or indirectly can be attached with the plurality of external device (ED).
7. control device (Cnt1) according to claim 1, it is characterised in that have:
A/D converter section (ADC), the signal of telecommunication exported from power model (PM) is carried out A/D conversion and generates numerical data by it；
Signal processing part (DSP), the described numerical data inputted via described bus is carried out calculation process by it；And
Drive division (DRV (PWM&OUT)), it drives described power model according to the operation result of described signal processing part.
8. a power inverter, it is characterised in that have:
Control device described in claim 7；And
Power model, it has transistor, and drive division described in this transistor AND gate is attached, and the operation result of described signal processing part is driven.
9. power inverter according to claim 8, it is characterised in that
This power inverter has external device (ED), and this external device (ED) is the host control device of serial communication system,
Described control device is attached via described communication unit and described external device (ED).
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| CN201410800136.0A CN105763042B (en) | 2014-12-19 | 2014-12-19 | Control device and power inverter |
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| CN201410800136.0A CN105763042B (en) | 2014-12-19 | 2014-12-19 | Control device and power inverter |
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| CN103077151A (en) * | 2013-01-25 | 2013-05-01 | 上海斐讯数据通信技术有限公司 | Device for switching universal serial bus (USB) interface and standard serial port |
| CN103150283A (en) * | 2011-12-06 | 2013-06-12 | 株式会社日立超Lsi系统 | Electronic apparatus |
| US20140075064A1 (en) * | 2012-09-12 | 2014-03-13 | Renesas Electronics Corporation | Information processing device |
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| US20040164765A1 (en) * | 2001-02-23 | 2004-08-26 | Yoshitaka Takahashi | Logic circuit module having power consumption control interface and a recording medium storing the module |
| CN101669102A (en) * | 2007-04-27 | 2010-03-10 | 爱特梅尔公司 | Serialization of data in multi-chip bus implementation |
| CN102195486A (en) * | 2010-03-09 | 2011-09-21 | 株式会社村田制作所 | Isolated switching power supply apparatus |
| CN103150283A (en) * | 2011-12-06 | 2013-06-12 | 株式会社日立超Lsi系统 | Electronic apparatus |
| US20140075064A1 (en) * | 2012-09-12 | 2014-03-13 | Renesas Electronics Corporation | Information processing device |
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