CN104535799A - Testing device and method for inertial sensor - Google Patents
Testing device and method for inertial sensor Download PDFInfo
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- CN104535799A CN104535799A CN201410848113.7A CN201410848113A CN104535799A CN 104535799 A CN104535799 A CN 104535799A CN 201410848113 A CN201410848113 A CN 201410848113A CN 104535799 A CN104535799 A CN 104535799A
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Abstract
The invention provides a testing device for an inertial sensor. Testing is conducted on an object to be tested according to a testing instruction of an upper computer outside, and testing data are transmitted to the upper computer. The testing device comprises a controller used for controlling measurement and communication processes, a wireless communication module used for receiving the testing instruction from the upper computer and transmitting the testing data to the upper computer, a testing bench which is used for containing the object to be tested and connected with the controller through a first interface, a current testing module used for controlling the working current of the current testing module according to the testing instruction of the controller, and a battery used for supplying power to the controller and the current testing module, wherein the controller acquires the mechanical physical quantity of the object to be tested in the test through the first interface, and the size of the testing current is acquired through the current testing module. The mode of wireless communication and battery power supply is used for replacing a wire hardness connection mode, so that the stability and reliability of the testing device are improved.
Description
Technical field
The present invention relates to sensor field, be specifically related to inertial sensor wireless test field.
Background technology
Inertial sensor is that one can sense acceleration, the mechanical devices of the physical quantitys such as angular velocity.In the process of producing, whether normal in order to test its function, the mechanical-physical amount input that inertial sensor one is actual must be given, at this moment just need test platform can make the action of some machinery.
Test platform normally works to enable tested inertial sensor and communicates with host computer, and power lead and data line must be had in succession.If test platform does mechanical motion like this, when particularly testing three axle inertial sensors, proving installation is needed arbitrarily to rotate inside three dimensions, and be in any attitude, the generation wire harness so almost can not avoided is wound around problem, wire harness is once be wound around, all labile factor can be brought to wire harness itself and wiring harness connector part, even may occur that wire harness is torn, Joint's falling off, the consequences such as power supply short circuit.
Existing a solution keeps being connected of power lead and signal wire in the joint mode of slip ring, but the shortcoming of slip ring is also apparent, there is contact resistance in the connection at slip ring place in power lead and signal wire after all, therefore, must make great efforts to the test of inertial sensor the use reducing wire harness.
Summary of the invention
In view of this, the present invention proposes a kind of proving installation.By adopting radio communication and battery powered mode to replace wire harness connected mode, improve stability and the reliability of proving installation.
According to an aspect of the present invention, provide a kind of proving installation, test object to be measured, and test data is sent to host computer according to the test instruction of the host computer of outside, described proving installation comprises: controller, for control survey and communication process; Wireless communication module, for receiving test instruction and transmitting test data to host computer from host computer; Test bench, for placing object to be measured, and is connected via first interface with between controller; Testing current module, for controlling the working current of testing current module according to the instruction of controller; Battery, for being described controller and described testing current module for power supply, wherein, described controller obtains the mechanical-physical amount of object to be measured in testing via first interface, obtain the size of measuring current from testing current module.
Preferably, described object to be measured is inertial sensor, and described controller is microprocessor.
Preferably, described wireless communication module is the communication module of 2.4GHz wireless technology.
Preferably, described battery is lithium ion battery.
Preferably, between controller and battery, being provided with the first low pressure difference linear voltage regulator, the input termination battery of described first low pressure difference linear voltage regulator, exporting termination controller, for changing out the operating voltage of stable controller.
Preferably, between testing current module and battery, being provided with the second low pressure difference linear voltage regulator, the input termination battery of described second low pressure difference linear voltage regulator, exporting termination testing current module, for changing out the test voltage of stable inertial sensor.
Preferably, described first interface is I
2c interface or Serial Peripheral Interface (SPI).
Preferably, described wireless communication module is provided with interrupt output end, described interrupt output end connects described controller, when described wireless communication module receives test instruction from host computer, described wireless communication module sends interrupt instruction by interrupt output end to controller, makes controller enter wake-up states.
According to a further aspect in the invention, a kind of method of testing is provided. comprising: initializing wireless communication module and object to be measured; Controller enters holding state; When receiving test instruction from host computer, wireless communication module interrupts waking controller up; Read the measuring current of testing current module and the mechanical-physical amount of object to be measured; Test data is sent to host computer by wireless communication module.
Preferably, described object to be measured is inertial sensor, and described controller is microprocessor.
According to proving installation of the present invention and method, wire harness connected mode is replaced by adopting radio communication and battery powered mode, proving installation can be rotated arbitrarily in three dimensions, and be in any attitude, and can not wired wrapping around and Joint's falling off, improve stability and the reliability of proving installation.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects of the present invention, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the structural drawing of inertial sensor wireless measuring system;
Fig. 2 is the structural drawing of proving installation embodiment of the present invention;
Fig. 3 is the workflow diagram of proving installation embodiment of the present invention.
Embodiment
Based on embodiment, present invention is described below, but the present invention is not restricted to these embodiments.In hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.In order to avoid obscuring essence of the present invention, known method, process, flow process, element and circuit do not describe in detail.
In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.
Meanwhile, should be appreciated that in the following description, " circuit " refers to the galvanic circle connected and composed by electrical connection or electromagnetism by least one element or electronic circuit.When " being connected to " another element when claiming element or circuit or claiming element/circuit " to be connected to " between two nodes, it can be directly couple or be connected to another element or can there is intermediary element, the connection between element can be physically, in logic or its combine.On the contrary, " be directly coupled to " when claiming element or " being directly connected to " another element time, mean that both do not exist intermediary element.
Unless the context clearly requires otherwise, similar words such as " comprising ", " comprising " otherwise in whole instructions and claims should be interpreted as the implication that comprises instead of exclusive or exhaustive implication; That is, be the implication of " including but not limited to ".
In describing the invention, it is to be appreciated that term " first ", " second " etc. are only for describing object, and instruction or hint relative importance can not be interpreted as.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Fig. 1 is the structural drawing of inertial sensor wireless measuring system.As shown in Figure 1, inertial sensor wireless measuring system comprises: proving installation 10, mechanical motion platform 20 and host computer 30.
Proving installation 10 is fixed on mechanical motion platform 20, and fixed form can be that bolt is fixed, screw is fixed, pin is fixed, rivet is fixed, and tested inertial sensor is arranged on the test bench of proving installation 10.Proving installation 10 and mechanical motion platform 20 and host computer 30 are all without the connection of any wire harness.Described wire harness refers to power lead, the order wire of any kind, wiring etc.Proving installation 10 receives instruction by inner wireless communication module from host computer 30, completes the test to inertial sensor, and test result is sent to host computer 30.
Mechanical motion platform 20 can be the device that turntable, mechanical arm, shaking table etc. can make mechanical movement.Mechanical motion platform 20 is for generation of the various mechanical action for inertial sensor test.
Host computer 30 sends instruction for the mode by radio communication to proving installation 10 and receives test result from proving installation 10.By analyzing described measurement result, host computer 30 judges that whether tested inertial sensor function is normal.
Fig. 2 is the structural drawing of proving installation embodiment of the present invention.As shown in Figure 2, proving installation 10 comprises: microprocessor 101,2.4GHz wireless communication module 102, first low pressure difference linear voltage regulator (Low DropOut Regulator, LDO) 103, battery 104, the 2nd LDO105, testing current module 106 and test bench 107.
Microprocessor 101 is the chip that can perform control and arithmetical logic function, and microprocessor 101 connects 2.4GHz wireless communication module 102, a LDO103, testing current module 106 and test bench 107.Microprocessor 101, for testing inertial sensor, comprises and controls testing current module 106, the mechanical-physical amount that the measurement electric current of reading testing current module 106 and reading inertial sensor record.Microprocessor 101 receives by 2.4GHz wireless communication module 102 instruction that host computer 30 sends and test result is uploaded to host computer 30.Described measurement result comprises the mechanical-physical amount that the measurement electric current of testing current module 106 and inertial sensor record.
2.4GHz wireless communication module 102 connects microprocessor 101, for setting up the radio communication between microprocessor 101 and host computer 30.2.4GHz wireless technology is a kind of short range wireless transmission technology of global general-use, and 2.4GHz refers to its frequency of operation.2.4GHz wireless communication module 102 can adopt the technical standards such as ZigBee, Wi-Fi, bluetooth, Wireless USB.In addition, the interrupt output end of 2.4GHz wireless communication module 102 is connected with the interrupting input end of microprocessor 101, if host computer 30 sends test instruction, 2.4GHz wireless communication module 102 produces interruption and wakes microprocessor 101 up, and microprocessor 101 starts to test inertial sensor.
Battery 104 is any midget plant that can produce electric energy, and battery 104 adopts chargeable lithium ion battery in the present embodiment.Battery 104 connects the input end of a LDO103 and the 2nd LDO105, for powering for microprocessor 101, testing current module 106, tested inertial sensor.
One LDO103, is arranged between battery 104 and microprocessor 101, and input termination battery 104, exports termination microprocessor 101, for changing out the operating voltage of stable microprocessor 101.
2nd LDO105, is arranged between battery 104 and testing current module 106, and input termination battery 104, exports termination testing current module 106, for changing out the test voltage of stable tested inertial sensor.
Between the output terminal that testing current module 106 is connected on the 2nd LDO105 and test bench 107, testing current module 106 also connects with microprocessor 101.Testing current module 106 is by the working current of microprocessor 101 control survey inertial sensor.Microprocessor 101 reads the measurement result of testing current module 106.
Test bench 107 is connected with microprocessor 101 and testing current module 106, and object to be measured is arranged on test bench 107.Test bench 107 is provided with the first interface connecting microprocessor 101 and tested inertial sensor, and connected mode can be I
2c interface or Serial Peripheral Interface (SPI) (SerialPeripheral Interface, SPI), depending on the interface mode of tested inertial sensor, wherein, I
2the interface of C (Inter Integrated Circuit) interface and twin wire universal serial bus, for connecting microcontroller and peripherals thereof, is a kind of bus standard of extensively adopting of microelectronics Control on Communication field and interface mode.Test bench 107 is also provided with the second interface connecting tested inertial sensor and testing current module 106.
Fig. 3 is the workflow diagram of proving installation embodiment of the present invention.As shown in Figure 3, the job step of proving installation embodiment comprises:
Step S1, after proving installation 10 electrification reset, microprocessor 101 pairs of 2.4GHz wireless communication modules 102 and object to be measured carry out initialization.
Step S2, microprocessor 101 enters holding state.
Step S3,2.4GHz wireless communication module 102 sets up the real-time Communication for Power between host computer 30 and microprocessor 101.If 2.4GHz wireless communication module 102 receives the test instruction of host computer 30, enter step S4, if 2.4GHz wireless communication module 102 does not receive the test instruction of host computer 30, return step S2, microprocessor 101 continues holding state.
Step S4,2.4GHz wireless communication module 102 interrupts waking microprocessor 101 up.
Step S5, microprocessor 101 starts to test inertial sensor, comprises the mechanical-physical amount that the measurement electric current that reads testing current module 106 and inertial sensor measure.
Step S6, test result is uploaded to host computer 30 by 2.4GHz wireless communication module 102 by microprocessor 101, and then end interrupt returns step S2.
Embodiments of the invention replace wire harness connected mode by adopting 2.4GHz radio communication and battery powered mode, proving installation can be rotated arbitrarily in three dimensions, and be in any attitude, and can not wired wrapping around and Joint's falling off, improve stability and the reliability of proving installation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various change and change.All do within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a proving installation, tests object to be measured according to the test instruction of the host computer of outside, and test data is sent to host computer, and described proving installation comprises:
Controller, for control survey and communication process;
Wireless communication module, for receiving test instruction and transmitting test data to host computer from host computer;
Test bench, for placing object to be measured, and is connected via first interface with between controller;
Testing current module, for controlling the working current of testing current module according to the instruction of controller;
Battery, for being described controller and described testing current module for power supply,
Wherein, described controller obtains the mechanical-physical amount of object to be measured in testing via first interface, obtain the size of measuring current from testing current module.
2. proving installation according to claim 1, wherein, described object to be measured is inertial sensor, and described controller is microprocessor.
3. proving installation according to claim 1, wherein, described wireless communication module is the communication module of 2.4GHz wireless technology.
4. proving installation according to claim 1, wherein, described battery is lithium ion battery.
5. proving installation according to claim 1, wherein, between controller and battery, be provided with the first low pressure difference linear voltage regulator, the input termination battery of described first low pressure difference linear voltage regulator, export termination controller, for changing out the operating voltage of stable controller.
6. proving installation according to claim 1, wherein, the second low pressure difference linear voltage regulator is provided with between testing current module and battery, the input termination battery of described second low pressure difference linear voltage regulator, export termination testing current module, for changing out the test voltage of stable inertial sensor.
7. proving installation according to claim 1, wherein, described first interface is I
2c interface or Serial Peripheral Interface (SPI).
8. proving installation according to claim 1, wherein, described wireless communication module is provided with interrupt output end, described interrupt output end connects described controller, when described wireless communication module receives test instruction from host computer, described wireless communication module sends interrupt instruction by interrupt output end to controller, makes controller enter wake-up states.
9. a method of testing. comprising:
Initializing wireless communication module and object to be measured;
Controller enters holding state;
When receiving test instruction from host computer, wireless communication module interrupts waking controller up;
Read the measuring current of testing current module and the mechanical-physical amount of object to be measured;
Test data is sent to host computer by wireless communication module.
10. method of testing according to claim 9, wherein, described object to be measured is inertial sensor, and described controller is microprocessor.
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| CN201410848113.7A CN104535799A (en) | 2014-12-29 | 2014-12-29 | Testing device and method for inertial sensor |
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| CN201410848113.7A CN104535799A (en) | 2014-12-29 | 2014-12-29 | Testing device and method for inertial sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104880203A (en) * | 2015-05-26 | 2015-09-02 | 美新微纳传感***有限公司 | Fixture for testing strap-down inertial system products |
| CN107421563A (en) * | 2017-06-02 | 2017-12-01 | 东南大学 | A kind of self-checking device and calibration method for multiple inertia measurement equipment |
| CN109143029A (en) * | 2018-07-23 | 2019-01-04 | 清华大学 | The method and apparatus that active implantation medical equipment traverses test automatically |
| CN114035246A (en) * | 2021-03-26 | 2022-02-11 | 山东省气象局大气探测技术保障中心(山东省气象计量站) | Switching module for meteorological verification, annular conveying device and using method of annular conveying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104880203A (en) * | 2015-05-26 | 2015-09-02 | 美新微纳传感***有限公司 | Fixture for testing strap-down inertial system products |
| CN107421563A (en) * | 2017-06-02 | 2017-12-01 | 东南大学 | A kind of self-checking device and calibration method for multiple inertia measurement equipment |
| CN109143029A (en) * | 2018-07-23 | 2019-01-04 | 清华大学 | The method and apparatus that active implantation medical equipment traverses test automatically |
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| CN114035246A (en) * | 2021-03-26 | 2022-02-11 | 山东省气象局大气探测技术保障中心(山东省气象计量站) | Switching module for meteorological verification, annular conveying device and using method of annular conveying device |
| CN114035246B (en) * | 2021-03-26 | 2024-02-27 | 山东省气象局大气探测技术保障中心(山东省气象计量站) | Meteorological verification switching module, annular conveying device and application method of meteorological verification switching module |
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Application publication date: 20150422 |