CN103473196A - Device for transmitting telemetric and telecontrolled data between 1553B bus and satellite interior equipment bus - Google Patents
Device for transmitting telemetric and telecontrolled data between 1553B bus and satellite interior equipment bus Download PDFInfo
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Abstract
A device for transmitting telemetric and telecontrolled data between a 1553B bus and a satellite interior equipment bus comprises a 1553B bus module, a singlechip module and a satellite equipment bus management module. The satellite interior equipment bus management module is not used in the traditional design method, and telemetric and telecontrolled management of satellite interior equipment is realized by using a singlechip only; along with increasing of the number of satellite-borne equipment, the complexity of control logic of the singlechip is increased, and the reliability of a system is affected; and moreover, because the singlechip works in a serial mode, the singlechip only can acquire and process one telemetric parameter every time, the updating period of the telemetric parameters of the whole satellite is longer and longer, and detection and isolation of faults are affected. The device can overcome the shortcomings; the design of a singlechip system is simplified by the satellite interior equipment bus management module, and the control and management capability of the system on telemetry and telecontrol to the satellite equipment is improved.
Description
Technical field
The present invention relates to the data transmission between the interior device bus of remote measuring and controlling data transmission device, particularly 1553B bus and star between a kind of different satellite borne equipment bus.
Background technology
The 1553B bus is satellite system one-level bus, is responsible for the remote control of whole star and the transmission of telemetry.In star, device bus is the secondary bus of satellite system, is responsible for the remote control of concrete equipment and the transmission of telemetry.
The management of the data such as remote measuring and controlling in star realizes by the network of device bus in 1553B bus and star.Realize the data-switching between two kinds of buses of device bus in 1553B bus and star by one-chip computer module in traditional design.Along with the increase of satellite borne equipment, round the steering logic of single-chip microcomputer, become increasingly complex, the reliability of equipment also is affected.Due to the work in series mode of single-chip microcomputer, at every turn can only telemetry parameter of acquisition and processing, the update cycle of the telemetry parameter of whole star is long, is unfavorable for fault detect and the isolation of system.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, data transmission device between device bus is provided in a kind of 1553B bus and star, this device can solve the problem between 1553B bus and the interior device bus of star in prior art.
Technical solution of the present invention is: remote measuring and controlling data transmission device between device bus in a kind of 1553B bus and star comprises 1553B bus remote terminal, one-chip computer module, device bus administration module in star; In described star, the device bus administration module comprises device bus controller state machine module in microcontroller bus interface module and star, and in described star, equipment comprises effective loading device, power management and well heater;
The telecommand that 1553B bus remote terminal reception satellite central manage-ment unit is sent also is stored in fixing subaddressing, and each space, subaddressing is no more than 32 words; After a message frame storage, produce a message frame end interrupt, trigger one-chip computer module and read the telecommand data of subaddressing; One-chip computer module carries out verification to the telecommand data read, and abandons the instruction of check errors; By verification, correct telecommand is sent to the microcontroller bus interface module; The microcontroller bus interface module is resolved the telecommand received, sign according to telecommand, telecommand is sent in the buffer area that in corresponding star, equipment is corresponding, and device bus controller state machine module is sent to equipment in relevant star by the command content in buffer zone according to the requirement of device bus in corresponding star in corresponding star; In star, equipment is sent to device bus controller state machine module in corresponding star according to the telecommand received by telemetry; In corresponding star, device bus controller state machine module is carried out the telemetry of reception buffer memory in impact damper, and after finishing receiving, telemetry sends the receive interruption signal to one-chip computer module, one-chip computer module is according to the look-at-me source received, read telemetry from respective buffer, after having read, telemetry carried out to framing and be stored in the stator address of 1553B bus remote terminal, by 1553B bus remote terminal, the data in the stator address being sent to central manage-ment unit.
Described verification adopts the cumulative sum verification mode.
The present invention's beneficial effect compared with prior art is:
(1) the present invention has increased star internal bus administration module.The design of one-chip computer module has been simplified in the use of star internal bus administration module, has realized the physical isolation between one-chip computer module and satellite borne equipment, has realized that data are processed and the Hierarchical Design of data acquisition, has promoted the reliability of system.
(2) star internal bus administration module of the present invention, in the remote measuring and controlling data management of distinct device, adopts special-purpose processing resource, is conducive to the fault isolation between distinct device.Improve the reliability of remote measuring and controlling data transmission device between the interior device bus of 1553B bus and star.
(3) the present invention can realize automatic collection and the storage to equipment telemetry parameter in star.Star internal bus administration module, after the instruction that receives the collection of single-chip microcomputer telemetry parameter, can gather and store the telemetry of equipment in star automatically.Do not need the one-chip computer module intervention, reduced the data interaction number of times between equipment in single-chip microcomputer and star, reduced the demand number of times that singlechip interruption is processed, reduced the complicacy of system.
(4) the present invention can realize concentrated collection and the storage to equipment telemetry parameter in star.The telemetry parameter concentration of transmissions, telemetry parameter is concentrated storage, has realized the quick renewal of central manage-ment unit to the individual equipment telemetry parameter, is conducive to fault analysis and the processing of individual equipment.
(5) star internal bus administration module of the present invention adopts parallel processing and storage means between distinct device, and the remote measuring and controlling acquisition speed of whole star is fast, is conducive to the fault detect of whole star equipment.
(6) the present invention, by reception and the transmission buffer design of device bus administrative unit in star, has expanded the storage space of one-chip computer module, has realized the distributed management of equipment in star.
The accompanying drawing explanation
Fig. 1 is structure of the present invention and application example schematic diagram;
Fig. 2 is principle of the invention block diagram;
Fig. 3 is device bus management asic functional block diagram in star
Fig. 4 is the power management bus
Fig. 5 is the useful load bus
Fig. 6 is heater bus
Embodiment
For design philosophy of the present invention is described, a simple application example of data transmission device between device bus in this has provided a kind of 1553B bus and star, as shown in Figure 1.This application example by central manage-ment unit module, 1553B bus and star between device bus data transmission device, power management module, payload module, heater module etc. form.Central manage-ment unit is responsible for the management of the remote measuring and controlling instruction of whole star, by the instruction of 1553B bus transfer remote measuring and controlling.Between the interior device bus of 1553B bus and star, the remote measuring and controlling data transmission device completes the protocol conversion between different bus, completes the remote measuring and controlling data transmission of equipment room in central manage-ment unit and star.Power management module, useful load administration module, heater module are the different interior equipment of star, receive the telecommand from center cell, send telemetry.Between the interior device bus of 1553B bus and star, the remote measuring and controlling data transmission device is the data transmission core of whole system.As shown in Figure 2, comprise 1553B bus remote terminal module, one-chip computer module, device bus administration module in star;
(1) 1553B bus remote terminal module
The 1553B bus standard is that US military is a kind of bus standard of realizing the issuing and implementation of aircraft electronic system synthesization demand, corresponding to China national military standard GJB289A-97.The 1553B bus network is by bus controller (BC), the compositions such as remote terminal (RT), bus monitor, bus switch, coupling mechanism, bus cable, the data/commands transmission between the aircraft subsystem of the main implementation space of this bus.
Bus protocol is carried out according to the regulation of national military standard GJB289A-97 " instruction processed in digital minute/response type multi-channel data transmission bus ".Wherein the designing requirement of bus controller and remote terminal is as follows:
1, bus controller: it is all that bus control right is summed up lane controller;
2, remote terminal: remote terminal is subsystem to the interface on data bus, at bus controller
Control lower data or the reception data of sending.
The telecommand that the central manage-ment unit module sends is sent in 1553B bus and star between device bus 1553B bus remote terminal in the remote measuring and controlling data transmission device by the CPU module by the 1553B bus controller.The telecommand data total amount that the 1553B bus controller sends is not more than 32 words (comprising sign, length, verification);
Subaddressing is a kind of way to manage of 1553B remote terminal to storage organization, and the message deposit of acceptance is in different spaces, subaddressing.Each space, subaddressing is no more than 32 words.The remote terminal of 1553B bus is stored telecommand data with fixing subaddressing, and enable the message frame end interrupt of this subaddressing, after message frame receives each time, produce a message frame end interrupt, to trigger in 1553B bus and star between device bus one-chip computer module reading director data in the remote measuring and controlling data transmission device.A message frame is comprised of sign, length, instruction and cumulative sum verification, minimumly in a message frame comprises 1 remote control and telemetry command, can comprise at most 15 remote controls and distant side instruction, and the transmission form of a message frame is as table 1:
The form of table 1 remote measurement control instruction bus communication
Central manage-ment unit is mainly to send telemetry-acquisition message by the 1553B bus controller to start to the reception of telemetry parameter, and the message data word number that the 1553B bus controller sends is not more than 32 words.After 1553B bus remote terminal receives message, the data word of stator address is sent to the 1553B bus controller.The remote terminal of 1553B bus is stored telemetry parameter with fixing subaddressing, and the data word sum of each subaddressing is no more than 32 words.After the 1553B bus controller correctly receives the telemetry of 1553B bus remote terminal, in central manage-ment unit, at first the CPU module should confirm that this far puts the telemetry parameter validity of terminal, if any extremely, abandons these data.The telemetry form is as shown in table 2:
The form of table 2 telemetry bus communication
In 1553B bus remote terminal in the stator address renewal of telemetry parameter by central manage-ment unit module send mode order " synchronously ", started.Producing a mode code when the 1553B remote terminal receives mode order " synchronously " interrupts.In 1553B bus and star between device bus in the remote measuring and controlling data transmission device one-chip computer module confirm after this mode order to start the tasks such as collection that telemetry parameter upgrades, processing, framing, storage.
(2) one-chip computer module
One-chip computer module is comprised of with peripheral relevant control and memory circuit single-chip microcomputer.Verification is carried out in remote control, telemetry command that the 1553B remote terminal is received, stores and be distributed to device bus administration module in star; The telemetry that device bus administration module in star is received is processed, framing being stored in 1553B remote terminal module.
The form that the 1553B remote terminal receives a message frame is comprised of sign, length, instruction, cumulative sum verification and four parts, as shown in table 1.Wherein an instruction is comprised of two data words, often in next message frame, receives at most 15 instructions.One-chip computer module will be by the instruction of word total check, after verification is correct, and according to command identification, recognition instruction equipment, the reading command data, send director data to equipment interface corresponding to star internal bus administration module.Until the number of instructions of instruction length appointment has read.If check errors, will abandon the instruction of whole frame.
After the telemetry-acquisition of star internal bus administration module finishes, one-chip computer module will read telemetry and process from the reception buffer of star internal bus administration module, framing, and frame format is as shown in table 2.Data after framing store in the stator address of 1553B remote terminal.The 1553B remote terminal waits for that the telemetry parameter that the 1553B bus controller sends gathers message.
(3) device bus management in star
In star, the device bus administration module is by microcontroller bus interface module, useful load bus controller state machine module, power management bus controller state machine module, and heater bus controller state machine module forms.
The microcontroller bus interface module will receive the director data that one-chip computer module sends.And store in the transmission buffer zone of useful load bus controller state machine module, power management bus controller state machine module or heater bus controller state machine module.For equipment in different stars, send the address difference of buffer zone.The command content that the bus controller state machine module of useful load, power management and well heater will send buffer zone is sent to outside relevant device according to the requirement of device bus.For example the power management bus form can be as shown in Figure 4, and bus is by gate-control signal, clock signal, and data send and the data receiver composition; Gate-control signal significance bit high level, invalid is low level.In 1～2 cycle after gate-control signal is effective, the tranmitting data register signal, receive at the rising edge clock data sampling, and in the more new data transmission of clock negative edge, data length is 16bit, and data send and finish rear 1～2 clock period, and gate-control signal is invalid; As shown in Figure 5, bus is comprised of remote measurement indicator signal, remote control indicator signal, clock signal, remote-control data, telemetry the useful load bus form.Remote control indicator signal or remote measurement indicator signal high level are effective, and low level is invalid.While sending telecommand, the remote control indicator signal is effective, and the remote measurement indicator signal is invalid.Effectively rear 1～2 clock period of indicator signal, the tranmitting data register signal, the clock negative edge is new data more, and data length is 16bit.After sending 16 bit, clock stops.1～2 clock period after clock stops, the remote control indicator signal is invalid.While receiving telemetry command, the remote measurement indicator signal is effective, and the remote control indicator signal is invalid.Effectively rear 1～2 clock period of indicator signal, the tranmitting data register signal, the rising edge clock sampled data, data length is 16bit.After receiving 16 bit, clock stops.1～2 clock period after clock stops, the remote measurement indicator signal is invalid.The heater bus form as shown in Figure 6, is used UART serial data bus agreement.
UART is a kind of general serial data bus, for asynchronous communication.Message frame is since a low level start bit, 8 of back data bit, as shown in table 3, Fig. 6:
The data layout of table 3 UART
Wherein everybody meaning is as follows:
Start bit: send the signal of a logical zero, mean the beginning of transmission character;
Data bit: start bit and then is 8 data bit, forms a character;
Parity check bit: data bit makes the figure place of " 1 " should be even number (even parity check) or odd number (odd) after adding this position, the correctness of coming checking data to transmit with this;
D0^D1^D2^D3^D4^D5^D6^D7^P=0 (even parity check)
D0^D1^D2^D3^D4^D5^D6^D7^P=1 (odd)
Position of rest: the end mark that is a character data;
Spare bits: in the logical one state, mean on current circuit not have data to transmit.
Above-mentioned ^ represents the XOR computing.
Useful load bus controller state machine module receives the telemetry that useful load equipment sends, and store data in the reception buffer of useful load bus controller state machine, after data receiver is complete, by the microcontroller bus interface module, to one-chip computer module, send the receive interruption signal.One-chip computer module is originated according to look-at-me, triggers interrupt handling routine, reads the telemetry in reception buffer.
Power management bus controller state machine module receives the telemetry that power-supply device sends, and store data in the reception buffer of power management bus controller state machine, after data receiver is complete, by the microcontroller bus interface module, to one-chip computer module, send the receive interruption signal.One-chip computer module is originated according to look-at-me, triggers interrupt handling routine, reads the telemetry in reception buffer.
Heater bus controller state machine module receives the telemetry that heater device sends, and store data in the reception buffer of heater bus controller state machine, after data receiver is complete, by the microcontroller bus interface module, to one-chip computer module, send the receive interruption signal.One-chip computer module is originated according to look-at-me, triggers interrupt handling routine, reads the telemetry in reception buffer.
The design of star internal bus administration module, carried out effective isolation to equipment in one-chip computer module and star; Useful load bus controller state machine module in star internal bus administration module, power management bus controller state machine module, heater bus controller state machine module adopts parallel independent processing structure, and the data transmission between distinct device has been carried out to effective isolation.The physical isolation of these two levels has promoted the reliability of system.
Useful load bus controller state machine module, power management bus controller state machine module, heater bus controller state machine inside modules is provided with independently data buffer.Data to sending and receiving are cushioned, and the external memory space of single-chip microcomputer has been expanded in the design of impact damper.Each module can realize completing the transmission of remote-control data and the collection of telemetry under single-chip microcomputer minimal intervention number of times, with the acquisition method of a remote measurement amount of the next remote measurement amount of traditional Single-chip Controlling, compare, the telemetry-acquisition speed of equipment is fast, is conducive to the fault detect of equipment; Three kinds of distinct devices have independently buffer zone, adopt parallel processing structure, with traditional equipment remote measuring and controlling serial processing structure, compare, and can significantly promote the telemetry-acquisition speed of whole star, are conducive to fault detect and the isolation of whole star.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (2)
1. remote measuring and controlling data transmission device between device bus in a 1553B bus and star, is characterized in that: comprise 1553B bus remote terminal, one-chip computer module, device bus administration module in star; In described star, the device bus administration module comprises device bus controller state machine module in microcontroller bus interface module and star, and in described star, equipment comprises effective loading device, power management and well heater;
The telecommand that 1553B bus remote terminal reception satellite central manage-ment unit is sent also is stored in fixing subaddressing, and each space, subaddressing is no more than 32 words; After a message frame storage, produce a message frame end interrupt, trigger one-chip computer module and read the telecommand data of subaddressing; One-chip computer module carries out verification to the telecommand data read, and abandons the instruction of check errors; By verification, correct telecommand is sent to the microcontroller bus interface module; The microcontroller bus interface module is resolved the telecommand received, sign according to telecommand, telecommand is sent in the buffer area that in corresponding star, equipment is corresponding, and device bus controller state machine module is sent to equipment in relevant star by the command content in buffer zone according to the requirement of device bus in corresponding star in corresponding star; In star, equipment is sent to device bus controller state machine module in corresponding star according to the telecommand received by telemetry; In corresponding star, device bus controller state machine module is carried out the telemetry of reception buffer memory in impact damper, and after finishing receiving, telemetry sends the receive interruption signal to one-chip computer module, one-chip computer module is according to the look-at-me source received, read telemetry from respective buffer, after having read, telemetry carried out to framing and be stored in the stator address of 1553B bus remote terminal, by 1553B bus remote terminal, the data in the stator address being sent to central manage-ment unit.
2. remote measuring and controlling data transmission device between the interior device bus of a kind of 1553B bus according to claim 1 and star, is characterized in that: described verification employing cumulative sum verification mode.
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| CN104267690A (en) * | 2014-09-22 | 2015-01-07 | 深圳市航天新源科技有限公司 | Inner bus system of satellite power supply controller |
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| CN111404750B (en) * | 2020-03-20 | 2022-11-01 | 上海航天测控通信研究所 | Centralized parameter management device and method for advanced on-orbit system |
| CN111427831A (en) * | 2020-03-27 | 2020-07-17 | 电子科技大学 | Interface implementation method based on power management bus protocol |
| CN111427831B (en) * | 2020-03-27 | 2023-03-03 | 电子科技大学 | Interface implementation method based on power management bus protocol |
| CN111541595A (en) * | 2020-04-16 | 2020-08-14 | 上海航天计算机技术研究所 | 1553B bus data communication method and system |
| CN111813734A (en) * | 2020-06-15 | 2020-10-23 | 上海航天计算机技术研究所 | 1553B bus communication method and system without message interval limitation |
| CN111813734B (en) * | 2020-06-15 | 2022-11-01 | 上海航天计算机技术研究所 | 1553B bus communication method and system without message interval limitation |
| CN112202656A (en) * | 2020-08-27 | 2021-01-08 | 西安空间无线电技术研究所 | Bus communication protocol for on-orbit adjustable traveling wave tube amplifier |
| CN112148658A (en) * | 2020-08-28 | 2020-12-29 | 北京卫星制造厂有限公司 | Plug-and-play SpaceWrie communication method based on xTEDS |
| CN112162784A (en) * | 2020-09-28 | 2021-01-01 | 中国科学院微小卫星创新研究院 | Loongson-based medium and high orbit satellite data processing system |
| CN112162784B (en) * | 2020-09-28 | 2024-04-26 | 中国科学院微小卫星创新研究院 | Loongson-based medium-high orbit satellite data processing system |
| CN112468379B (en) * | 2020-11-03 | 2022-06-28 | 中国航空工业集团公司西安航空计算技术研究所 | Communication bus with node equal authority |
| CN112468379A (en) * | 2020-11-03 | 2021-03-09 | 中国航空工业集团公司西安航空计算技术研究所 | Communication bus with node equal authority |
| CN113515366A (en) * | 2021-04-09 | 2021-10-19 | 北京临近空间飞行器系统工程研究所 | Bus load balancing processing method and device and storage medium |
| CN113515366B (en) * | 2021-04-09 | 2023-11-17 | 北京临近空间飞行器系统工程研究所 | Bus load balancing processing method, device and storage medium |
| CN115484123A (en) * | 2022-08-03 | 2022-12-16 | 中国空间技术研究院 | Communication satellite integrated electronic network communication method based on high-speed bus |
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