CN104880203B - A kind of fixture for testing strap-down inertial system product - Google Patents
A kind of fixture for testing strap-down inertial system product Download PDFInfo
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- CN104880203B CN104880203B CN201510276190.4A CN201510276190A CN104880203B CN 104880203 B CN104880203 B CN 104880203B CN 201510276190 A CN201510276190 A CN 201510276190A CN 104880203 B CN104880203 B CN 104880203B
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000004891 communication Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000013519 translation Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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- Radar, Positioning & Navigation (AREA)
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Abstract
The present invention provides a kind of fixture for testing strap-down inertial system product, and it includes：Wireless data transmission module, it is provided with several interfaces；Usb hub, its one end set the first communication interface, and the other end sets the second communication interface, and the usb hub is connected by first communication interface with the interface of the wireless data transmission module；I/O modules, its one end set USB interface, and the other end is provided with some translation interfaces, and the I/O modules are connected by the USB interface with the second communication interface of the usb hub；Strap-down inertial system product, it is provided with third communication interface, and the third communication interface is connected by connecting line with a translation interface in the I/O modules.The present invention solves the problems, such as to exist because of USB resistance requirements using USB server (system) by wireless network communication.
Description
Technical field
The present invention relates to a kind of test fixture, more particularly to a kind of fixture of high-volume test strap-down inertial system product.
Background technology
As MEMS technology is more and more ripe, the volume of MEMS sensor is less and less, thereby using MEMS sensor collection
Into strap-down inertial system product volume it is also less and less, because strap-down inertial system product consumption is increasing, therefore,
Inertia compensation test table to strap-down inertial system production manufacturer brings stern challenge：Strapdown inertia system
Product simultaneously the test of inertia compensation test table limited amount in the interface of test equipment, so as to realize while large quantities of
The on-line testing of volume production product, and the versatility of test fixture and autgmentability are poor.
Test fixture and strap-down inertial system product correspond at present, and which results in ought test multiple products simultaneously
When, it is necessary to more test fixture and communication interface.Normal conditions solve this problem using USB Hub mode.It is many
Well known, extensive USB Hub are typically by the way of externally fed, so the batch testing folder proposed in common scheme
Tool in fact out with regard to both threads, a USB line, a power line, but USB line resistance requirements 90ohm therein is matched, and
The interface of inertia compensation test table is usually to use general brush pattern (slip ring), and this pattern is except being unsatisfactory for
Outside resistance requirements, also many noises can be added because of the structure of brush.
Improved therefore, it is necessary to further to prior art.
The content of the invention
It is an object of the invention to solve to deposit because of USB resistance requirements by wireless network communication using USB server
The problem of.
To reach object defined above, a kind of fixture for testing strap-down inertial system product of the present invention, it includes：
Wireless data transmission module, it is provided with several interfaces；
Usb hub, its one end set the first communication interface, and the other end sets the second communication interface, the usb hub
It is connected by first communication interface with the interface of the wireless data transmission module；
I/O modules, its one end set USB interface, and the other end is provided with some translation interfaces, and the I/O modules pass through institute
USB interface is stated with the second communication interface of the usb hub to be connected；
Strap-down inertial system product, it is provided with third communication interface, and the third communication interface passes through connecting line and institute
In I/O modules translation interface is stated to be connected.
As a preferred embodiment of the invention, the number of the wireless data transmission module collection strap-down inertial system product
According to the data of, forwarding collection to base station, the base station receives the test data that the wireless data transmission module is sent and sends control
To the wireless data transmission module, the wireless data transmission module sends control command to the usb hub, the USB for system order
Hub sends control command and sends control command to the I/O modules, last I/O modules and produced to the strap-down inertial system
Product.
As a preferred embodiment of the invention, the wireless data transmission module supports WIFI, zigbee or BLE channel radio
News technology
As a preferred embodiment of the invention, the translation interface include SPI, UART, RS232, RS422,
One or more in RS485, I2C, ARINC429, CAN and analog quantity.
As a preferred embodiment of the invention, the model of the interface of the usb hub include USB2512,
USB2513, USB2514 and USB2517.
As a preferred embodiment of the invention, an interface of the wireless data transmission module has a daisy chain,
The daisy chain includes father's usb hub and more sub- usb hubs, wherein the one of father's usb hub
First communication interface is connected with an interface of the wireless data transmission module,
Every first communication interface of sub- usb hub and the sub- usb hub of upper level or father's usb hub
One the first communication interface is connected, and each second communication interface of each usb hub is connected with corresponding I/O modules, often
The translation interface of individual I/O modules is connected with the third communication interface of the strap-down inertial system product.
As a preferred embodiment of the invention, the third communication interface of the strap-down inertial system product is SPI,
UART, RS232, RS422, RS485, I2C, ARINC429 or CAN.
As a preferred embodiment of the invention, the wireless data transmission module is multiple, the multiple wireless data sending mould
Block forms star-like wireless network with the base station.
As a preferred embodiment of the invention, instruction device is additionally provided with the wireless data transmission module.
Beneficial effects of the present invention：Compared with prior art, the present invention solves the high-volume of strap-down inertial system product
On-line testing problem, the fixture are the test fixture schemes based on wireless network technologies, and wireless mode solves the complicated and tired of wiring
Difficulty, wiring cost is greatly reduced, and reduce the noise of inertia compensation test table interface, can further solved one and be used to
Property the compensating test turntable once strap-down inertial system product of high-volume test simultaneously, can also once monitor multiple inertia benefits simultaneously
Repay test table test job state together.The test fixture of the present invention not only substantially increases plant produced efficiency, saves
Inertia compensation test table equipment and the cost of wiring, and the versatility and autgmentability of test fixture are enhanced, solve
The problem of existing because of USB resistance requirements.
Brief description of the drawings
Fig. 1 is the structured flowchart of the fixture of the test strap-down inertial system product of the present invention；
Fig. 2 is the I/O modular structure block diagrams of the connection strap-down inertial system product of the present invention；
Fig. 3 is the mode of operation schematic diagram of the star-like wireless network of the present invention；
Fig. 4 is the attachment structure schematic diagram of the fixture of the test strap-down inertial system product of the present invention；
Fig. 5 is the communication mode structured flowchart of the fixture of the test strap-down inertial system product of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
" one embodiment " or " embodiment " referred to herein refers to may be included at least one implementation of the present invention
Special characteristic, structure or characteristic." in one embodiment " that different places occur in this manual not refers both to same
Individual embodiment, nor the single or selective embodiment mutually exclusive with other embodiment.
Referring to Fig. 1, its for the present invention test strap-down inertial system product fixture structured flowchart, the fixture S2 its
Include wireless data transmission module S21, usb hub (USB hub) S22, I/O module S23 and various interfaces strap-down inertial system
Product S24.
The wireless data transmission module S21, it is provided with several interfaces (not shown).
The usb hub S22, its one end set the first communication interface (not shown), and the other end sets the second communication to connect
Mouth (not shown), the usb hub S22 pass through first communication interface and the interface phase of the wireless data transmission module S21
Connection.
The I/O modules S23, its one end set USB interface S231, and the other end is provided with some translation interface S234, institute
I/O modules S23 is stated by the USB interface S231 with the second communication interface of the usb hub S22 to be connected.
The strap-down inertial system product S24, it is provided with third communication interface (not shown), the third communication interface
It is connected by connecting line with a translation interface S234 in the I/O modules S23.
In the fixture, the wireless data transmission module S21 abbreviation nodes, node S21 support WIFI or zigbee or
The wireless telecommunications such as person BLE (low-power consumption bluetooth), using multiplexing technique, there is provided more than 4 standard USB ports, each USB ends
One usb hub S22 of mouth connection.Node S21 major functions are responsible for the transmission of data, gather multiple strap-down inertial systems
Product S24 data, the data of forwarding collection send order and fitting data to base station S1, downwards to corresponding strap down inertial navigation system
Unite product S24.Each node S21 has unique node ID number, and in whole wireless network, node ID number is exactly the node
Unique identity card, and the unique identities identification of the fixture.Heretofore described base station S1 support WIFI either zigbee or
The wireless communication techniques such as BLE (low-power consumption bluetooth), its major function be responsible for collecting the test data that each node sends and
Control command is sent to each node, then control command is sent by node and gives usb hub S22, USB Hub S22 to send control
Order and give I/O modules S23, last I/O modules S23 sends control command and gives strap-down inertial system product S24, base station S1 also to be responsible for
Preserve and parse obtained test data, drafting and printing test report.
In one embodiment, instruction device (not shown) is additionally provided with the wireless data transmission module S21.
Referring to Fig. 2, its I/O modular structure block diagram for the connection strap-down inertial system product of the invention of the present invention.
As depicted in figs. 1 and 2, the I/O modules S23, it is the abbreviation of INPUT and OUTPUT modules.The I/O modules S23 is the survey
Try the passage of the interface input/output information of fixture connection strap-down inertial system product, one end carry USB interface S231, it is convenient and
The other USB Hub S22 connections of upper level, the other end carry various translation interface S234, and the translation interface S234 can be：
SPI, UART, RS232, RS422, RS485, I2C, ARINC429, CAN, analog quantity and other interfaces, as shown in Fig. 2 this
A little translation interface S234 interfaces corresponding with strap-down inertial system product S24 are connected with each other, and are responsible for and strap-down inertial system product
S24 direct communications.The USB interface S231 of the I/O modules S23 is connected with central processing module (CPU) S232, the centre
The I/O modules S23 control commands received are issued usb hub S22 or strapdown by reason module S232 by USB interface S231
Inertia system product S24.
The usb hub S22 is the hub (Hub) with multiple standard USB interfaces, and the fixture is supported at present
Usb hub S22 connecter type has USB2512, USB2513, USB2514, USB2517 and other models, and its standard USB connects
Mouthful number is respectively：2,3,4,7 and more than 7.The USB hub, primarily serve the effect of usb hub, mesh
Be connect more strap-down inertial system products, can be classified to connect USB Hub.The strap-down inertial system product
Third communication interface (not shown) is SPI, UART, RS232, RS422, RS485, I2C, ARINC429 or CAN.It is each prompt
Connection inertia system product S24 has each uniquely No. SN (Serial Number, abbreviation SN), and this No. SN is its unique body
Part card, by these No. SN, we can distinguish product of each test, with reference to node ID (Ident ity, abbreviation ID) number
With regard to the clearer product for distinguishing each test in which fixture, i.e., in which inertia compensation test table.
Referring to Fig. 4, its attachment structure schematic diagram for the fixture of the test strap-down inertial system product of the present invention.Such as figure
Shown in 4.An interface of the wireless data transmission module S21 has a daisy chain.The daisy chain includes father's usb hub
S221 and more sub- usb hub S221, S222Sn (wherein n is integer), wherein the one of father's usb hub S221
Individual first communication interface is connected with an interface of the wireless data transmission module S21.One first of every sub- usb hub
Communication interface is connected with the sub- usb hub of upper level or first communication interface of father's usb hub, each USB set
Each second communication interface of line device is connected with corresponding I/O modules S23, each I/O modules S23 translation interface and the victory
Connection inertia system product S24 third communication interface is connected.
When high-volume product test to be measured, a so large quantities of measurement is placed on each inertia compensation test table
The fixture of strap-down inertial system product is tried, each fixture includes only one wireless data transmission module S21, can define each fixture
Equivalent to the node in a radio sensing network, if any multiple inertia compensation test tables, multiple nodes have been meant that, it is multiple
Node is automatically composed a star-like wireless network with base station.Referring to Fig. 3, its Working mould for the star-like wireless network of the present invention
Formula schematic diagram.In this embodiment, the wireless data transmission module S21 is multiple, the multiple wireless data transmission module S21 with it is described
Base station S1 forms star-like wireless network.
Referring to Fig. 5, its communication mode structured flowchart for the fixture of the test strap-down inertial system product of the present invention.Such as
Shown in Fig. 5, upper electricity, fixture is run, inquire about whether this fixture be present in wireless network first, be such as not present, the folder newly added
Tool is applied and added in the wireless network automatically.After adding network, it can automatically inquire about and whether be connected with father USB Hub, if any folder
Tool can send handshaking information downwards successively, inquire about sub- USBHub, counter++, untill inquiring no sub- USB Hub,
Otherwise, inquire about whether this USB Hub has the connection of I/O modules, if any I/O modules, whether just inquiry has strap-down inertial system production
Product are connected in this I/O module, are connected, are given a green light if any strap-down inertial system product, and according to corresponding communications protocol group number
Base station is sent to according to bag.As this I/O module do not have strap-down inertial system product connection, send out a warning, also send packet to base
Stand.Base station also sends downwards order and fitting data to corresponding strap-down inertial system product.
The present invention, according to each strap-down inertial system product No. SN, each strap-down inertial system product can be whole
In individual star-like wireless sensor network can unique identification, node ID number can allow each fixture in whole star-like wireless senser
Unique identification in network, so as to identify each inertia compensation test table in whole star-like wireless network intermediate energy region point, and often
Individual fixture has a unique virtual ID in database.The virtual ID is the number of one 64, and every 8 are a field,
It is respectively：Node ID number++ USB Hub the depth of port numbers+I/O module Is D+strap-down inertial system product SN.Each USB
Hub needs to report USB Hub depth, I/O module Is D, strapdown to be used to when reporting oneself strap-down inertial system product information
The data of sexual system product SN and strap-down inertial system product.Radio node reported data Bao Shihui adds node ID number and end
Message ceases.Base station can parse from node data bag and generate the unique ID number and strap-down inertial system of each I/O module
Product SN.Here I/O modules also support plug and play.
This programme solves the problems, such as the high-volume on-line testing of strap-down inertial system product, and the fixture is to be based on wireless network skill
The test fixture scheme of art, wireless mode solve the complicated and difficult of wiring, greatly reduce wiring cost, and reduce used
Property compensating test turntable interface noise, can further solve an inertia compensation test table once simultaneously high-volume test it is prompt
Join inertia system product, can also once monitor multiple inertia compensation test tables test job state together simultaneously.The present invention
Test fixture not only substantially increase plant produced efficiency, saved inertia compensation test table equipment and wiring into
This, and the versatility and autgmentability of test fixture are enhanced, solve the problems, such as exist because of USB resistance requirements.
Described above has fully disclosed the embodiment of the present invention.It is pointed out that it is familiar with the field
Scope of the technical staff to any change that the embodiment of the present invention is done all without departing from claims of the present invention.
Correspondingly, the scope of claim of the invention is also not limited only to previous embodiment.
Claims (6)
- A kind of 1. fixture for testing strap-down inertial system product, it is characterised in that：It includes：Wireless data transmission module, it is provided with several interfaces；Usb hub, its one end set the first communication interface, and the other end sets the second communication interface, and the usb hub passes through First communication interface is connected with the interface of the wireless data transmission module；I/O modules, its one end set USB interface, and the other end is provided with some translation interfaces, and the I/O modules pass through the USB Interface is connected with the second communication interface of the usb hub；Strap-down inertial system product, it is provided with third communication interface, and the third communication interface passes through connecting line and the I/O A translation interface in module is connected；The data that the data of the wireless data transmission module collection strap-down inertial system product, forwarding gather are to base station, the base station Receive the test data that the wireless data transmission module is sent and send control command to the wireless data transmission module, it is described wireless Digital transmission module sends control command to the usb hub, and the usb hub sends control command to the I/O modules, most I/O modules send control command to the strap-down inertial system product afterwards；The translation interface is included in SPI, UART, RS232, RS422, RS485, I2C, ARINC429, CAN and analog quantity One or more；One interface of the wireless data transmission module has a daisy chain,The daisy chain includes father's usb hub and more sub- usb hubs, wherein the one of father's usb hub first Communication interface is connected with an interface of the wireless data transmission module,One of every first communication interface of sub- usb hub and the sub- usb hub of upper level or father's usb hub First communication interface is connected, and each second communication interface of each usb hub is connected with corresponding I/O modules, each I/O The translation interface of module is connected with the third communication interface of the strap-down inertial system product.
- 2. the fixture of test strap-down inertial system product according to claim 1, it is characterised in that：The wireless data sending mould Block supports WIFI, zigbee or BLE wireless communication technique.
- 3. the fixture of test strap-down inertial system product according to claim 1, it is characterised in that：The model of the interface of the usb hub includes one kind or more in USB2512, USB2513, USB2514 and USB2517 Kind.
- 4. the fixture of test strap-down inertial system product according to claim 1, it is characterised in that：The strap down inertial navigation system The third communication interface of system product is SPI, UART, RS232, RS422, RS485, I2C, ARINC429 or CAN.
- 5. the fixture of test strap-down inertial system product according to claim 1, it is characterised in that：The wireless data sending mould Block is multiple, and the multiple wireless data transmission module forms star-like wireless network with the base station.
- 6. the fixture of test strap-down inertial system product according to claim 1, it is characterised in that：The wireless data sending mould Instruction device is additionally provided with block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276190.4A CN104880203B (en) | 2015-05-26 | 2015-05-26 | A kind of fixture for testing strap-down inertial system product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276190.4A CN104880203B (en) | 2015-05-26 | 2015-05-26 | A kind of fixture for testing strap-down inertial system product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104880203A CN104880203A (en) | 2015-09-02 |
| CN104880203B true CN104880203B (en) | 2017-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799288B1 (en) * | 1999-09-23 | 2005-02-25 | Ibm | WIRELESS COMMUNICATION SYSTEM USING UNIVERSAL SERIAL BUS (USB) |
| CN2565209Y (en) * | 2002-08-13 | 2003-08-06 | 旺讯科技股份有限公司 | Concentrator with wireless communication function |
| CN103249178B (en) * | 2012-02-09 | 2016-05-11 | 美新微纳传感系统有限公司 | Wireless sensing network system |
| CN203722830U (en) * | 2013-12-17 | 2014-07-16 | 美新微纳传感系统有限公司 | Transmission system of wireless sensing network sensors |
| CN104535799A (en) * | 2014-12-29 | 2015-04-22 | 杭州士兰微电子股份有限公司 | Testing device and method for inertial sensor |
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Address after: 214000 Jiangsu city of Wuxi province Quxin Wu Hui new Ring Road No. 2 Patentee after: New sensing system Co., Ltd. Address before: 214101 Jiangsu Wuxi Economic Development Zone (Eastern District) Dacheng Road South, Axen Road East Patentee before: Memsic Transducer Systems Co., Ltd. |
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