CN102096041A - Load state detecting method based on intelligent power electronic switch - Google Patents
Load state detecting method based on intelligent power electronic switch Download PDFInfo
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- CN102096041A CN102096041A CN2010105596696A CN201010559669A CN102096041A CN 102096041 A CN102096041 A CN 102096041A CN 2010105596696 A CN2010105596696 A CN 2010105596696A CN 201010559669 A CN201010559669 A CN 201010559669A CN 102096041 A CN102096041 A CN 102096041A
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Abstract
The invention provides a load state detecting method based on an intelligent power electronic switch, which comprises the following steps: collecting the control signal,the voltage signal of an incoming wire, the voltage signal of a load end,the feedback signal of current and the feedback signal of the switch of the intelligent power electronic switch,; detecting the switch and a load loop; and hierarchically and comprehensively processing the collected information and prompting/alarming. The technical scheme provided by the invention has a load and power distribution management system with the automatic power distribution capability and the malfunction diagnosis capability, thereby enhancing the range and depth of the real-time monitoring of a load state, and the real-time monitoring of the load state is more comprehensive and deeper, thereby enhancing the testability level and automatic malfunction diagnosis level of the load and power distribution system and realizing automatic monitoring and malfunction diagnosis of a load electric state.
Description
Technical field
The present invention relates to control of special vehicle load distribution and management system application field, the distribution control management system method that specifically relates to embedded microprocessor control technology, vehicle bus transmission technology and intelligent power electronic switching technology relates in particular to a kind of load condition detection method based on the intelligent power electronic switch.
Background technology
Along with the development of electronic technology and infotech, various electronic equipments increase gradually in the car, and function also from strength to strength.But these electronic equipments have also caused some contradictions in succession.Mainly contain: the application of a large amount of power electronic electrical equipments and the contradiction of power supply limited capacity; Contradiction between the increase of electronic electric equipment and interior space and the complete vehicle weight quality; Contradiction between the complicacy of electric system and reliability, the maintainability.Therefore, the management mode of conventional manual switching regulator has been difficult to satisfy the requirement of distribution management.
In the distribution system of conventional truck, general Automatic Protection Switching and the fuse of adopting is as control and protection device, and the load circuit status monitoring is not easy to realize, because need additional sensor and observation circuit, in view of cost and complicacy consideration, generally will not adopt; Detection and diagnosis for loop connection, disconnection, short circuit, overcurrent, these load circuit electric states of opening a way need the intervention of people at ring, and therefore, the Testability Design level and the automatic fault diagnosis level of conventional electrical distribution system are very low.Intelligent control has become vehicle distribution management Developing Trend in Technology.Along with increasing of electronics on the vehicle and electric equipment, distribution system automation and the diagnosis of load electrical status fault are all had higher requirement, and the embedded microprocessor technology, the continuous development of bus communication control technology and power semiconductor technologies and mutually promoting, especially a kind of novel power switch---intelligent power electronic switch, begin to be applied in the control of load distribution, the tradition distribution system upgrades to the load distribution management system with robotization distribution ability and trouble diagnosibility, and this provides technical support for the load condition measuring ability of realizing robotization.
Summary of the invention
The purpose of this invention is to provide a kind of load condition detection method based on the intelligent power electronic switch, this method has enlarged the load condition scope and the degree of depth of monitoring in real time, the real-time monitoring of load condition has improved the testability level and the automatic trouble diagnosis level of load distribution system more comprehensively with deep.
For realizing purpose of the present invention, the invention provides a kind of load condition detection method based on the intelligent power electronic switch, its improvements are: described method comprises the steps:
A, control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of gathering the intelligent power electronic switch;
B, detector switch and load circuit;
C, the Information Monitoring hierarchical synthesis is handled, and prompting/warning.
A kind of optimized technical scheme provided by the invention is: among the described step B, described detection is to power positive end inlet wire section, switch segments and is connected three sections detections of load patch.
Second kind of optimized technical scheme provided by the invention is: described step C comprises following situation: in the time of after device powers on, when switch disconnects, at switch connection.
The third optimized technical scheme provided by the invention is: described after device powers on, judge whether the power positive end primary voltage is normal, the undesired hard fault alarm condition of then exporting.
The 4th kind of optimized technical scheme provided by the invention is: described when switch disconnects, judge whether switch and load circuit be normal; The undesired hard fault alarm condition of then exporting, fault mode comprise that switch fault, loop disconnect, switch is exported the power positive end short circuit.
The 5th kind of optimized technical scheme provided by the invention is: described when switch connection, judge on off state and load circuit state, and normally then export the prompting state; Described prompting state comprises switch disconnection, switch connection, loop connection; Undesired then output can recover the fault alarm state, and fault mode comprises load overcurrent, shorted to earth.
Compared with prior art, method provided by the invention reaches following beneficial effect:
A kind of load condition detection method provided by the invention based on the intelligent power electronic switch, load distribution management system with robotization distribution ability and trouble diagnosibility, the load condition scope and the degree of depth of monitoring have in real time been enlarged, the real-time monitoring of load condition is more comprehensively with deep, improve the testability level and the automatic trouble diagnosis level of load distribution system, realized the automatic monitoring and the fault diagnosis of load electrical state.
Description of drawings
Fig. 1 is a load condition detection hardware principle schematic;
Fig. 2 is a load condition monitoring of software workflow block diagram.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is a load condition detection hardware principle schematic, and the load condition detection hardware comprises intelligent power electronic switch 1, load 2, interface circuit 3, microprocessor 4 and occupant's terminal computer 5.Intelligent power electronic switch 1, interface circuit 3, microprocessor 4 and occupant's terminal computer 5 are connected successively, and load 2 is connected between intelligent power electronic switch 1 and the interface circuit 3 and load 2 ground connection.Microprocessor 4 is unified to gather by control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of 3 pairs of intelligent power electronic switches 1 of interface circuit.
Load condition detection method concrete grammar based on the intelligent power electronic switch provided by the invention is as follows:
(1) microprocessor is unified to gather to control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of intelligent power electronic switch.
(2) detector switch and load circuit are for to power positive end inlet wire section, switch segments be connected three sections detections of load patch.
(3) the Information Monitoring hierarchical synthesis is handled, and prompting/warning, be included in that device powers on afterwards, three kinds of situations when switch disconnects, when switch connection.Fig. 2 is a load condition monitoring of software workflow block diagram, after device powers on, judges whether the power positive end primary voltage is normal, the undesired hard fault alarm condition of then exporting.When switch disconnects, judge whether switch and load circuit be normal; The undesired hard fault alarm condition of then exporting, fault mode comprise that switch fault, loop disconnect, switch is exported the power positive end short circuit.When switch connection, judge on off state and loop state, normally then export the prompting state; The prompting state comprises switch disconnection, switch connection, loop connection; Undesired then output can recover the fault alarm state, and fault mode comprises load overcurrent, shorted to earth.Table 1 is handled criterion for the load condition hierarchical synthesis.
Table 1 load condition hierarchical synthesis is handled criterion
Load condition detection method based on the intelligent power electronic switch provided by the invention has been applied in the power sourced electric management system application of certain special vehicle, and scope contains 80A accompanies the above electric loading of using.Concrete steps are as follows:
(1) according to load distribution position on the car, load is divided into chassis load, gun turret vehicle commander load, gun turret gun commander load three parts, control, protection and the state-detection of every fractional load focused in the device.
(2) each device comprises microprocessor control unit, bus communication unit, driving interface unit, intelligent electronic switch unit and power supply.The state detection interfaces design concept of driving interface unit comprises intelligent power electronic switch 1, load 2, interface circuit 3, microprocessor 4 and occupant's terminal computer 5 as shown in Figure 1.Intelligent power electronic switch 1, interface circuit 3, microprocessor 4 and occupant's terminal computer 5 are connected successively, and load 2 is connected between intelligent power electronic switch 1 and the interface circuit 3 and load 2 ground connection.Microprocessor 4 is unified to gather by control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of 3 pairs of intelligent power electronic switches 1 of interface circuit.
(3) microprocessor software is handled according to table 1 pair load condition hierarchical synthesis at the working stage of switch and load, and software is according to load condition monitoring of software workflow circular flow shown in Figure 2, and concrete grammar is as follows:
A, microprocessor are unified to gather to control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of intelligent power electronic switch.
B, detector switch and load circuit are for to power positive end inlet wire section, switch segments be connected three sections detections of load patch.
C, the Information Monitoring hierarchical synthesis is handled, and prompting/warning, be included in that device powers on afterwards, three kinds of situations when switch disconnects, when switch connection.After device powers on, judge whether the power positive end primary voltage is normal, the undesired hard fault alarm condition of then exporting.When switch disconnects, judge whether switch and load circuit be normal; The undesired hard fault alarm condition of then exporting, fault mode comprise that switch fault, loop disconnect, switch is exported the power positive end short circuit.When switch connection, judge on off state and loop state, normally then export the prompting state; The prompting state comprises switch disconnection, switch connection, loop connection; Undesired then output can recover the fault alarm state, and fault mode comprises load overcurrent, shorted to earth.
Load condition detection method based on the intelligent power electronic switch provided by the invention, in load distribution management system, load condition detects and fault diagnosis does not need to be provided with sensor special, interface circuit is easy to realize, this method is unified gathers various electric state signals, detector switch and load circuit for to power positive end inlet wire section, switch segments, be connected three sections detections of load patch; The Information Monitoring hierarchical synthesis is handled, and prompting/warning, be divided into whether normal three kinds of situations to electric power incoming line, whether switch is normal, whether load circuit is normal, switch connection, loop connections, switch disconnection, load overcurrent, load shorted to earth, states such as power supply short circuit, overvoltage/undervoltage monitored and classifying alarm the automatic monitoring and the fault diagnosis of realization load electrical state.
Should be noted that at last: only illustrate that in conjunction with the foregoing description technical scheme of the present invention is not intended to limit.Those of ordinary skill in the field are to be understood that: those skilled in the art can make amendment or are equal to replacement the specific embodiment of the present invention, but these modifications or change are all among the claim protection domain that application is awaited the reply.
Claims (6)
1. the load condition detection method based on the intelligent power electronic switch is characterized in that described method comprises the steps:
A, control signal, primary voltage signal, load terminal voltage signal, current feedback signal and the switch feedback signal of gathering the intelligent power electronic switch;
B, detector switch and load circuit;
C, the Information Monitoring hierarchical synthesis is handled, and prompting/warning.
2. a kind of load condition detection method based on the intelligent power electronic switch as claimed in claim 1 is characterized in that, among the described step B, described detection is to power positive end inlet wire section, switch segments and is connected three sections detections of load patch.
3. a kind of load condition detection method based on the intelligent power electronic switch as claimed in claim 1 is characterized in that described step C comprises following situation: in the time of after device powers on, when switch disconnects, at switch connection.
4. a kind of load condition detection method based on the intelligent power electronic switch as claimed in claim 3 is characterized in that, and is described after device powers on, and judges whether the power positive end primary voltage is normal, the undesired hard fault alarm condition of then exporting.
5. a kind of load condition detection method based on the intelligent power electronic switch as claimed in claim 3 is characterized in that, and is described when switch disconnects, and judges whether switch and load circuit be normal; The undesired hard fault alarm condition of then exporting, fault mode comprise that switch fault, loop disconnect, switch is exported the power positive end short circuit.
6. a kind of load condition detection method based on the intelligent power electronic switch as claimed in claim 3 is characterized in that, and is described when switch connection, judges on off state and load circuit state, normally then exports the prompting state; Described prompting state comprises switch disconnection, switch connection, loop connection; Undesired then output can recover the fault alarm state, and fault mode comprises load overcurrent, shorted to earth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105596696A CN102096041A (en) | 2010-11-26 | 2010-11-26 | Load state detecting method based on intelligent power electronic switch |
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| CN2010105596696A CN102096041A (en) | 2010-11-26 | 2010-11-26 | Load state detecting method based on intelligent power electronic switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106353672A (en) * | 2016-08-19 | 2017-01-25 | 苏州宝化炭黑有限公司 | Judging device for switch malfunction of operating post |
| CN109791175A (en) * | 2016-07-25 | 2019-05-21 | 大陆汽车系统公司 | Half-bridge driver fault diagnosis system and method |
| CN113050610A (en) * | 2021-03-31 | 2021-06-29 | 上海拿森汽车电子有限公司 | State detection device and vehicle |
| CN116400145A (en) * | 2023-01-05 | 2023-07-07 | 宁德时代新能源科技股份有限公司 | Test method, system, device and storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109791175A (en) * | 2016-07-25 | 2019-05-21 | 大陆汽车系统公司 | Half-bridge driver fault diagnosis system and method |
| CN109791175B (en) * | 2016-07-25 | 2021-05-18 | 大陆汽车系统公司 | Half-bridge driver fault diagnosis system and method |
| CN106353672A (en) * | 2016-08-19 | 2017-01-25 | 苏州宝化炭黑有限公司 | Judging device for switch malfunction of operating post |
| CN106353672B (en) * | 2016-08-19 | 2024-02-27 | 苏州宝化炭黑有限公司 | Operation column switch failure judgment device |
| CN113050610A (en) * | 2021-03-31 | 2021-06-29 | 上海拿森汽车电子有限公司 | State detection device and vehicle |
| CN113050610B (en) * | 2021-03-31 | 2022-06-03 | 上海拿森汽车电子有限公司 | State detection device and vehicle |
| CN116400145A (en) * | 2023-01-05 | 2023-07-07 | 宁德时代新能源科技股份有限公司 | Test method, system, device and storage medium |
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Application publication date: 20110615 |