CN103092106B - Remote intelligent interface unit and control method - Google Patents
Remote intelligent interface unit and control method Download PDFInfo
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- CN103092106B CN103092106B CN201210571411.7A CN201210571411A CN103092106B CN 103092106 B CN103092106 B CN 103092106B CN 201210571411 A CN201210571411 A CN 201210571411A CN 103092106 B CN103092106 B CN 103092106B
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Abstract
The invention provides a remote intelligent interface unit and a control method. The problems that transmission of an existing sensor interface is in mutual interference, and signals of the sensor interface and signals of an effector interface are in mutual interference are mainly solved. The remote intelligent interface unit comprises an Avionics Full Duplex Switched Ethernet (AFDX) network interface which is connected with an integrated core processor, and the AFDX network interface is connected with an internal bus through a dual-port random access memory (DPRAM). The remote intelligent interface unit further comprises a storer, a control logic device, a power inverter and an external interface which are respectively connected with the internal bus. The storer is connected with the internal bus through a PPC 8245. The remote intelligent interface unit can achieve nearby collection, timely converting and distribution control of interface data, and enable a system to be expanded and updated conveniently.
Description
Technical field
Technical field belongs to embedded computer system designing technique.
Background technology
Along with the various interface complexity of airborne embedded system improve constantly, interface signal transfer distance increase and applied environment become more come about severe, occur that sensor interface transmission interferes with each other problem and interferes with each other problem between sensor interface signal and effector interface signal, these problems have had a strong impact on the quality of signals collecting, and then have influence on the safety of system.
Summary of the invention
The invention provides a kind of remote intelligent interface unit and control method, mainly solve existing sensor interface and transmit the problem interfered with each other interfered with each other and between sensor interface signal and effector interface signal.
Concrete technical solution provided by the invention is as follows:
This remote intelligent interface unit comprises the AFDX network interface be connected with comprehensive core processor, AFDX network interface is connected with internal bus by DPRAM, also comprises storer, steering logic device and the power supply changeover device and external interface that are connected with internal bus respectively; Described storer is connected with internal bus by PPC8245.
Above-mentioned external interface comprises ARINC429 interface, RS422 interface, discrete magnitude interface and the debugging interface for being connected with commissioning device for being connected with passenger cabin MFD and control panel.
This remote intelligent control method, comprises the following steps:
1] set up and complete initiating task
1.1] according to the initial setting up of application allocation list, the original state of output interface is set;
1.2] according to the information initializing interface data structure of application allocation list;
1.3] synchronous required various synchronizing signal amounts between creation task;
1.4] create periodic duty house dog, when report cycle arrives, release reports semaphore, and activation data reports task, and enters step 2 and process;
1.5] activation cycle sampling task, and enter step 3 and process;
1.6], after step 1.1 has worked to 1.5, initiating task has been cancelled;
2] after step 1.4 is activated by initiating task, carry out data and report task process; When described activation specifically refers to that report cycle arrives or reports order to arrive, this task is activated;
3] after step 1.5 is activated by initiating task, according to the frequency characteristic of the signal of user's input, determine the sampling period, according to this sampling period, signal is sampled, and upgrade the sampled value stored.
Above-mentioned steps 2 data report the object of task process to comprise analog input, discrete magnitude input and data communication input, and according to the difference of signal attribute, take different processing policies, it specifically; Analog quantity data report be by periodic sampling task obtain latest data report; Discrete magnitude reports and is instant sample variance amount state and reports; It is that communication data interface adopts interrupt mode receive data at any time and put it in reception data buffer that communication data reports, and reports during mission-enabling and the data in buffer zone are reported system; After above-mentioned work completes, suspension data reports task.
When in above-mentioned steps 1 to 3, any interface interrupt produces, enter step 4] interrupt processing, it is specifically: 4.1] interface being set to interrupt working manner is managed, when this interface interrupt produces, interrupt handler software obtains this interface data, after the data structure packaging of regulation, activate bus and send task transmission data;
4.2] serial data stream is processed, when serial data stream device interrupt produces, interrupt handling routine receives data, and by data temporary storage in the buffer, when report cycle arrival or when reporting order to arrive, data report task to extract data from buffer zone and report;
4.3] periodic sampling timing is managed.
Above-mentioned steps 4.2 serial data stream device interrupt specifically RS422 or RS429 is interrupted.
The periodic sampling of above-mentioned steps 4.3 specifically comprises bus task, message handling task and Interface Controller task, its specifically:
4.3.1] bus receives initiating task activation of leaving, and its testbus message activates message handling task;
4.3.2] when bus reception task detects bus message, activate message handling task, message handling task is resolved message, message is put in corresponding interface buffer, the new data semaphore of relevant device is set, and activation interface control task carries out interface output control.
4.3.3] Interface Controller task is activated by message handling task, and this task obtains the new data semaphore of interface, and extracts message from the message buffer of corresponding interface, controls the corresponding interface according to message content.
The invention has the advantages that:
This remote intelligent interface unit can realize that interface data gathers, conversion and the function of distributed controll in time nearby, makes system carry out expansions and upgrade in aspect very much.Specifically, remote intelligent interface unit carries out overall treatment again exporting to core processor by AFDX network after the Signal Pretreatment gathered nearby, various like this analog interface signal, discrete interface signal and sensor small-signal change into data-signal transmission from interference, also reduce power stage interface simultaneously and bring pressure to system EMC, improve system reliability; In addition remote intelligent interface unit have low in energy consumption, volume is little, lightweight feature can natural heat dissipation mode Remote Installation by sensor and the closer position of actuator, alleviate the weight of cable like this, improve system maintenance maintainability.
Accompanying drawing explanation
Fig. 1 is remote intelligent interface unit theory diagram;
Fig. 2 is long-distance intelligent interface control method FB(flow block).
Embodiment
As shown in Figure 1, it realizes passenger cabin man-machine interface and keyboard operation process thereof to remote intelligent interface unit inner structure, gathers discrete magnitude, I/O interface data that the equipment such as HOCAS, AAP export, row relax of going forward side by side.Signal type comprises RS422 interface, ARINC429 interface, and 27V/ ground, 27V pulse, 27V/ open circuit ,/open discrete magnitude signal.Pass to core processor by AFDX network after the signal gathered carries out pre-service and carry out overall treatment, core processing control output signal is passed to remote intelligent interface unit by AFDX network and is carried out control driver output.
Long-distance intelligent interface software control method is described below:
Initiating task: this task mainly completes following several work:
(1) according to the original state of the initial setting up output interface of application allocation list.
(2) according to the information initializing interface data structure of application allocation list.
(3) synchronous required various synchronizing signal amounts between creation task.
(4) create periodic duty house dog, when report cycle arrives, release reports semaphore, activates and reports task.
(5) activation cycle sampling task, determine the sampling period according to analog signals characteristic.
(6), after above-mentioned work completes, this task is cancelled.
Periodic sampling task: this task is activated by initiating task, according to the frequency characteristic of the signal of user's input, determines the sampling period, samples according to this sampling period to signal, and upgrade the sampled value stored.
Data report task: when report cycle arrive or when reporting order to arrive, this task is activated.Data report task handling object to comprise analog input, and discrete magnitude input and data communication input, according to the difference of signal attribute, take different processing policies.
Analog quantity data report: reported by the latest data that periodic sampling task obtains.
Discrete magnitude reports: instant sample variance amount state also reports.
Communication data reports: communication data interface adopts interrupt mode receive data at any time and put it in reception data buffer, reports during mission-enabling and the data in buffer zone are reported system.
After above-mentioned work completes, hang up this task.
Should pack according to the data structure of regulation before should noting all data reporting systems, then call bus communication software and be sent to bus interface.
Interrupt processing function:
(1) manage the interface being set to interrupt working manner, when this interface interrupt produces, interrupt handler software obtains this interface data, after the data structure packaging of regulation, activates bus and sends task transmission data.
(2) serial data stream is processed, when serial data flow device is (as RS422, RS429 etc.) interrupt produce time, interrupt handling routine receives data, and by data temporary storage in the buffer, when report cycle arrival or when reporting order to arrive, data report task to extract data from buffer zone and report.
(3) periodic sampling timing is managed.
Bus receives task: this task is activated by initiating task, its testbus message, activates message handling task.
Message handling task: when bus reception task detects bus message, activate message handling task.This task is resolved message, message is put in corresponding interface buffer, arranges the new data semaphore of relevant device, and activation interface control task carries out interface output control.
Interface Controller task: Interface Controller task is activated by message handling task, this task obtains the new data semaphore of interface, and extracts message from the message buffer of corresponding interface, controls the corresponding interface according to message content.
Claims (6)
1. a remote intelligent control method, is characterized in that, comprises the following steps:
1] set up and complete initiating task
1.1] according to the initial setting up of application allocation list, the original state of output interface is set;
1.2] according to the information initializing interface data structure of application allocation list;
1.3] synchronous required various synchronizing signal amounts between creation task;
1.4] create periodic duty house dog, when report cycle arrives, release reports semaphore, and activation data reports task, and enters step 2 and process;
1.5] activation cycle sampling task, and enter step 3 and process;
1.6], after step 1.1 has worked to 1.5, initiating task has been cancelled;
2] after step 1.4 is activated by initiating task, carry out data and report task process; When described activation specifically refers to that report cycle arrives or reports order to arrive, this task is activated;
3] after step 1.5 is activated by initiating task, according to the frequency characteristic of the signal of user's input, determine the sampling period, according to this sampling period, signal is sampled, and upgrade the sampled value stored;
The method adopts remote intelligent interface unit to carry out, described remote intelligent interface unit comprises the AFDX network interface be connected with comprehensive core processor, AFDX network interface is connected with internal bus by DPRAM, also comprises storer, steering logic device and the power supply changeover device and external interface that are connected with internal bus respectively; Described storer is connected with internal bus by PPC8245.
2. remote intelligent control method according to claim 1, is characterized in that: described external interface comprises ARINC 429 interface, RS422 interface, discrete magnitude interface and the debugging interface for being connected with commissioning device for being connected with passenger cabin MFD and control panel.
3. remote intelligent control method according to claim 2, it is characterized in that: described step 2 data report the object of task process to comprise analog input, discrete magnitude input and data communication input, according to the difference of signal attribute, take different processing policies, it specifically; Analog quantity data report be by periodic sampling task obtain latest data report; Discrete magnitude reports and is instant sample variance amount state and reports; It is that communication data interface adopts interrupt mode receive data at any time and put it in reception data buffer that communication data reports, and reports during mission-enabling and the data in buffer zone are reported system; After above-mentioned work completes, suspension data reports task.
4. remote intelligent control method according to claim 3, it is characterized in that: when in described step 1 to 3, any interface interrupt produces, enter step 4] interrupt processing, it is specifically: 4.1] interface being set to interrupt working manner is managed, when this interface interrupt produces, interrupt handler software obtains this interface data, after the data structure packaging of regulation, activates bus and sends task transmission data;
4.2] serial data stream is processed, when serial data stream device interrupt produces, interrupt handling routine receives data, and by data temporary storage in the buffer, when report cycle arrival or when reporting order to arrive, data report task to extract data from buffer zone and report;
4.3] periodic sampling timing is managed.
5. remote intelligent control method according to claim 4, is characterized in that: described step 4.2 serial data stream device interrupt specifically RS422 or RS429 is interrupted.
6. remote intelligent control method according to claim 5, is characterized in that: the periodic sampling of described step 4.3 specifically comprises bus task, message handling task and Interface Controller task, its specifically:
4.3.1] bus receives initiating task activation of leaving, and its testbus message activates message handling task;
4.3.2] when bus reception task detects bus message, activate message handling task, message handling task is resolved message, message is put in corresponding interface buffer, the new data semaphore of relevant device is set, and activation interface control task carries out interface output control;
4.3.3] Interface Controller task is activated by message handling task, and this task obtains the new data semaphore of interface, and extracts message from the message buffer of corresponding interface, controls the corresponding interface according to message content.
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| US9497025B2 (en) * | 2014-09-20 | 2016-11-15 | Innovasic Inc. | Ethernet interface module |
| CN105573961B (en) * | 2015-12-10 | 2019-04-05 | 中国航空工业集团公司西安航空计算技术研究所 | Comprehensive core processor system distributed multi-processor recognition methods |
| CN105550382B (en) * | 2015-12-12 | 2019-03-05 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of AFDX data sampling recording equipment and method |
| DE102017210440B4 (en) * | 2017-06-21 | 2019-07-11 | Schmidhauser Ag | Electric motor and a system with such an electric motor and a control device for driving the electric motor |
| CN109246081A (en) * | 2018-08-07 | 2019-01-18 | 中国航空无线电电子研究所 | Aerial Electronic Equipment AFDX bus and A429, RS422 bus data conversion method |
| CN109255889B (en) * | 2018-09-20 | 2021-02-23 | 广州咖宇智能科技有限公司 | Configuration method and device of beverage vending machine product manufacturing control system |
| CN109743241A (en) * | 2018-12-26 | 2019-05-10 | 中国民航大学 | A kind of long-range aeronautical data bus switch equipment based on high-performance processor |
| CN113050479B (en) * | 2021-03-04 | 2024-04-09 | 中国航空工业集团公司西安航空计算技术研究所 | Method for switching working modes of universal remote interface unit |
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| CN102419725A (en) * | 2010-07-28 | 2012-04-18 | 空中客车运营简化股份公司 | Method for testing input/output interface of integrated modular avionic type computing module in aircraft and device thereof |
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| CN102419725A (en) * | 2010-07-28 | 2012-04-18 | 空中客车运营简化股份公司 | Method for testing input/output interface of integrated modular avionic type computing module in aircraft and device thereof |
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