CN102541670A - MCU (micro control unit) autonomous reset system device - Google Patents
MCU (micro control unit) autonomous reset system device Download PDFInfo
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- CN102541670A CN102541670A CN2011104423872A CN201110442387A CN102541670A CN 102541670 A CN102541670 A CN 102541670A CN 2011104423872 A CN2011104423872 A CN 2011104423872A CN 201110442387 A CN201110442387 A CN 201110442387A CN 102541670 A CN102541670 A CN 102541670A
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Abstract
The invention discloses an MCU (micro control unit) autonomous reset system device, which is characterized in that an input end of a main MCU system is connected with a power source, an SCK (serial clock) communication clock line is arranged at an output end of the main MCU system, a diode is arranged between the power source and the main MCU system, two resistors are arranged between an electrolytic resistor of an electrolytic capacitor and the diode, the resistivity of the second resistor is more than twenty times of that of the first resistor, and the second resistor is parallelly connected with the diode prior to being serially connected with the first resistor. The MCU autonomous reset system device has the advantages that automatic reset of the main MCU system and auxiliary MCU systems is realized, the auxiliary MCU systems can be reset by the main MCU system, the system can restart automatically after dead halt, and 'concern-free' operation of the MCU systems can be guaranteed by means of cooperation of software.
Description
Technical field:
The present invention relates to a kind of artificial intelligence field that is used for, the MCU of strong interference immunity autonomous resetting means.
Background technology:
MCU (Micro Control Unit) Chinese is a micro-control unit; Claim one chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer again; Be meant appearance and development thereof along with large scale integrated circuit; CPU, RAM, ROM, timer conter and the multiple I/O interface of computing machine are integrated on a slice chip, form the computing machine of chip-scale, for doing various combination control in different application scenarios.
MCU is widely used in artificial intelligence field, a little less than its antijamming capability relative thin, and program easy " race flies " or " deadlock " before interference surface, native system utilizes I
2The clock signal of C communication or other serial communication can realize through handling the reseting port that removes to control MCU: master and slave MCU system is from master reset; Main MCU system's positive return " race flies " or " deadlock " from the MCU system.
Summary of the invention:
The technical matters that the present invention will solve provides a kind of strong interference immunity, can be from master reset, and the autonomous resetting means of the MCU that can restart automatically after the deadlock.
Principal feature of the present invention is: the input end of main MCU system links to each other with power supply; The output terminal of main MCU system is provided with a communication clock SCK line, a diode is set, an electrochemical capacitor between its power supply and the main MCU system reset end; Two resistance are set between its electrochemical capacitor and the diode; One diode, wherein No. 2 resistance are more than 20 times of No. 1 resistance, its No. 2 resistance are connected with No. 1 resistance with a diode parallel connection afterwards again.
Beneficial effect of the present invention is: master and slave MCU system is from master reset, and main MCU system positive return is restarted behind the system in case of system halt from the MCU system automatically, cooperates through software, can guarantee MCU system " carefree " work.
Description of drawings
Fig. 1 is a product structure synoptic diagram of the present invention
Fig. 2 is a product application drawing of the present invention
Embodiment
In embodiment the present invention is done further explain below
The autonomous resetting system device of MCU is characterized in that: the input end of main MCU system links to each other with power supply, and the output terminal of main MCU system is provided with a communication clock SCK line; Between its power supply and the main MCU system reset end diode is set; One electrochemical capacitor is provided with two resistance, a diode between its electrochemical capacitor and the diode; Wherein No. 2 resistance are more than 20 times of No. 1 resistance, and its No. 2 resistance are connected with No. 1 resistance with a diode parallel connection afterwards again.
When SCK was high level, through R1, D1's electric current charged to C1 along the I1 red line, and when SCK was low level, electric current discharged for the blue line of I2 to C1 through R2, R1, and R2 is more than 20 times of R1, so discharge is slow, charging is fast, and C1 keeps high level, system's operate as normal.When system program " race flies " or " deadlock ", the level of SCK is inevitable unusual aspect frequency and pulsewidth, and at this moment, the last high level of C1 can't be kept, and system will be from horizontal reset., the effect of D2 is party's when shutdown, lets the C1 rapid discharge.
The discharge time constant of R2 and C1 should have enough redundances to guarantee system greater than 0.2 second, and different R2 can select different reset times, works with realization system " carefree ".
Figure two is from MCU multisystem application drawing; Select different Ri2 and the Ci1 can be selectively to carrying out positive return from the MCU system; When " deadlock " occurring in the system; Communication can not normally be carried out, each master slave system can automatically reset or compelled resetting, and the R2 of main system, the time constant of C1 are normally maximum.
Claims (1)
1.MCU autonomous resetting system device is characterized in that: the input end of main MCU system links to each other with power supply, and the output terminal of main MCU system is provided with a communication clock SCK line; Between its power supply and the main MCU system reset end diode is set; One electrochemical capacitor is provided with two resistance, a diode between its electrochemical capacitor and the diode; Wherein No. 2 resistance are more than 20 times of No. 1 resistance, and its No. 2 resistance are connected with No. 1 resistance with a diode parallel connection afterwards again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442387.2A CN102541670B (en) | 2011-12-26 | 2011-12-26 | MCU (micro control unit) autonomous reset system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442387.2A CN102541670B (en) | 2011-12-26 | 2011-12-26 | MCU (micro control unit) autonomous reset system device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102541670A true CN102541670A (en) | 2012-07-04 |
| CN102541670B CN102541670B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110442387.2A Expired - Fee Related CN102541670B (en) | 2011-12-26 | 2011-12-26 | MCU (micro control unit) autonomous reset system device |
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| CN (1) | CN102541670B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106951336A (en) * | 2017-03-24 | 2017-07-14 | 北京经纬恒润科技有限公司 | A kind of MCU repositioning method, apparatus and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809280A (en) * | 1984-06-12 | 1989-02-28 | Omron Tateisi Electronics Co. | Microcomputer system with watchdog timer |
| US20060284660A1 (en) * | 2005-06-17 | 2006-12-21 | Kuan-Hong Hsieh | Reset device and display device having same |
| CN101127282A (en) * | 2007-06-08 | 2008-02-20 | 西安交通大学 | Intelligent AC contactor control unit based on current-variable control |
| CN101393163A (en) * | 2008-10-23 | 2009-03-25 | 上海交通大学 | Portable hydrogen peroxide concentration detector based on electrolysis method |
-
2011
- 2011-12-26 CN CN201110442387.2A patent/CN102541670B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809280A (en) * | 1984-06-12 | 1989-02-28 | Omron Tateisi Electronics Co. | Microcomputer system with watchdog timer |
| US20060284660A1 (en) * | 2005-06-17 | 2006-12-21 | Kuan-Hong Hsieh | Reset device and display device having same |
| CN101127282A (en) * | 2007-06-08 | 2008-02-20 | 西安交通大学 | Intelligent AC contactor control unit based on current-variable control |
| CN101393163A (en) * | 2008-10-23 | 2009-03-25 | 上海交通大学 | Portable hydrogen peroxide concentration detector based on electrolysis method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106951336A (en) * | 2017-03-24 | 2017-07-14 | 北京经纬恒润科技有限公司 | A kind of MCU repositioning method, apparatus and system |
| CN106951336B (en) * | 2017-03-24 | 2020-02-04 | 北京经纬恒润科技有限公司 | MCU (microprogrammed control Unit) resetting method, device and system |
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| Publication number | Publication date |
|---|---|
| CN102541670B (en) | 2014-05-07 |
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