CN113970907A - Control tool for batch production of fiber-optic gyroscopes - Google Patents
Control tool for batch production of fiber-optic gyroscopes Download PDFInfo
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- CN113970907A CN113970907A CN202111108394.9A CN202111108394A CN113970907A CN 113970907 A CN113970907 A CN 113970907A CN 202111108394 A CN202111108394 A CN 202111108394A CN 113970907 A CN113970907 A CN 113970907A
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- 238000010923 batch production Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 abstract description 20
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32368—Quality control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Gyroscopes (AREA)
Abstract
The invention provides a control tool for batch production of fiber-optic gyroscopes, which is directly connected with a plurality of adjustable matching resistors through a constant current source chip and connected with the fiber-optic gyroscopes for direct detection and debugging, and has the advantages of low cost, simple operation, strong practicability and reusability, and the batch production rate of the fiber-optic gyroscopes can be greatly improved. The control tool is directly connected with the plurality of adjustable matching resistors through the constant current source chip, is connected with the optical fiber gyroscope, directly detects and debugs, and enables the adjustment of the light source board matching resistors of the optical fiber gyroscope in the batch production process to be simple and feasible and the cost to be reduced through the adjustable matching resistor circuit.
Description
Technical Field
The invention relates to the technical field of batch production of fiber-optic gyroscopes, in particular to a control tool for batch production of fiber-optic gyroscopes.
Background
Fiber optic gyroscopes are angular rate sensors based on the Sagnac effect. When the fiber optic gyroscope works, when two light waves which are transmitted along opposite directions in an optical path system go around for a circle and return to a starting point, if a closed optical path rotates relative to an inertial space in a plane of the closed optical path, the phases of the two light waves are changed, a phase difference which is in direct proportion to a rotation angular rate is generated, an interference effect is further caused, and then an interference signal is detected and analyzed, so that the rotation angular rate of the gyroscope is obtained.
The optical fiber gyroscope mainly comprises an optical path and a circuit, wherein the optical path mainly comprises an SLD light source, a coupler, a Y waveguide, an optical fiber ring, a detector and the like, and the circuit mainly comprises a main board and a light source board. The SLD light source is one of important parts of the optical fiber gyroscope which can work normally, the output power stability and the spectrum stability of the SLD light source are greatly influenced by the driving constant current, the SLD light source is connected with the matching resistor on the light source board in series, and the driving current of the SLD light source can be changed by adjusting the size of the matching resistor. The matching resistor with a certain size corresponds to a specific SLD light source driving current value, so that the stability of light wave output power and the stability of a spectrum are ensured. The output power of the SLD light source is detected by a detector and converted into output voltage, the output voltage is kept between 0.5V and 1.3V according to actual production experience, finally, the optical fiber gyroscope can be sensitive to correct angular rate information through circuit demodulation control, and if the output power exceeds the range, the optical fiber gyroscope cannot be well sensitive to correct angular rate information.
The conventional SLD light source constant-current driving circuit mainly comprises a plurality of schemes such as a transistor, a field effect transistor and a numerical control constant-current source controlled by a single chip microcomputer, and has remarkable effects in scientific research, but the conventional SLD light source constant-current driving circuit has the characteristics of complex operation, more peripheral devices, high cost, low practicability and the like in the batch production process of actual products, and cannot meet the batch production requirements of the products to a certain extent.
Disclosure of Invention
In view of the above, the invention provides a control tool for mass production of fiber optic gyroscopes, which is directly connected with a plurality of adjustable matching resistors through a constant current source chip, is connected with the fiber optic gyroscopes, is used for direct detection and debugging, has low cost, simple operation and strong practicability and reusability, and can greatly improve the mass production rate of the fiber optic gyroscopes.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention discloses a control tool for batch production of fiber optic gyroscopes, which comprises a power supply circuit, a temperature control circuit, a constant current source driving circuit and an adjustable matching resistance circuit, wherein the power supply circuit is connected with the temperature control circuit;
the power supply circuit is used for supplying power to the temperature control circuit and the constant current source driving circuit;
the temperature control circuit is used for controlling the internal temperature of an SLD light source in the fiber-optic gyroscope to be consistent with a preset temperature;
the constant current source driving circuit and the adjustable matching resistance circuit are used for adjusting the current of the SLD light source in the whole working process of the fiber-optic gyroscope;
the output end of the adjustable matching resistance circuit is connected with the tube core of the SLD light source, and the output value of the current of the constant current source driving circuit is changed by changing the resistance value of the adjustable matching resistance circuit, so that the output voltage of the detector is ensured to be between 0.5V and 1.3V.
The adjustable matching resistance circuit comprises a knob switch, the output end of the constant current source driving circuit is connected with the input end of a knob switch in the adjustable matching resistance circuit, each output pin of the knob switch is connected with a resistor with different resistance values, the resistor is 1.8 omega, 2.0 omega, 2.2 omega, 2.4 omega, 2.7 omega, 3.0 omega, 3.3 omega, 3.6 omega, 3.9 omega and 4.3 omega, and the connection resistance value of the adjustable matching resistance circuit 5 is changed through the knob switch.
The signal RT +, RT-, TEC + and TEC-ends of the temperature control circuit are connected with the thermistor and the refrigerating sheet of the SLD light source; the output end of the adjustable matching resistance circuit is connected with the tube core of the SLD light source; the output end of the constant current source driving circuit is connected with the input end of the adjustable matching resistance circuit.
And the signal RT +, RT-, TEC + and TEC-ends of the temperature control circuit and the output end of the adjustable matching resistance circuit are respectively connected with the SLD light source through a first connector.
The detector of the fiber-optic gyroscope outputs voltage signals VP and GND signals to be connected with the oscilloscope.
The temperature control circuit is characterized in that a TEC control chip ADN8831 is adopted for temperature control, an input end of an operational amplifier inside the chip and a thermistor with a negative temperature coefficient inside the SLD light source form a bridge circuit, when the internal temperature of the light source is inconsistent with a preset temperature, the operational amplifier outputs a signal, a refrigerating sheet control circuit determines the working state of a refrigerating sheet according to the temperature value, and then a PWM wave output by the chip passes through a driving circuit formed by MOS (metal oxide semiconductor) tubes to drive the refrigerating sheet inside the SLD light source until the internal temperature of the SLD light source is consistent with the preset temperature.
Wherein, the power supply circuit adopts 5V voltage.
Advantageous effects
The control tool is directly connected with the plurality of adjustable matching resistors through the constant current source chip, is connected with the optical fiber gyroscope, directly detects and debugs, and enables the adjustment of the light source board matching resistors of the optical fiber gyroscope in the batch production process to be simple and feasible and the cost to be reduced through the adjustable matching resistor circuit.
Drawings
Fig. 1 is a schematic view of a control tool of the present invention.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The control tool comprises a power supply circuit, a temperature control circuit, a constant current source driving circuit and an adjustable matching resistance circuit.
The power supply circuit adopts +/-5V voltage, the SLD light source enables the temperature and the spectrum of a tube core inside the SLD light source to change through current, and then output power and the spectrum are unstable, so that a temperature control circuit and a constant current source driving circuit are needed to maintain the internal temperature of the SLD light source in a constant temperature state. The temperature control circuit is used for controlling the internal temperature of the SLD light source to be consistent with the preset temperature; the constant current source driving circuit provides stable current for the SLD light source in the whole working process of the fiber-optic gyroscope, and the output end of the constant current source driving circuit is connected with the input end of the adjustable matching resistance circuit. The output end of the adjustable matching resistance circuit is connected with a tube core of the SLD light source, the output value of the current of the constant current source driving circuit is changed by changing the resistance value of the adjustable matching resistance circuit, the output voltage of the detector is ensured to be between 0.5V and 1.3V, and the optical fiber gyroscope can be sensitive to correct angular rate information.
The schematic view of the control tool 1 of the embodiment is shown in fig. 1, and includes: the temperature control circuit comprises a power supply circuit 2, a temperature control circuit 3, a constant current source driving circuit 4, an adjustable matching resistance circuit 5, a first connector 6 and a second connector 7. The power supply circuit 2 adopts +/-5V voltage input to supply power to the temperature control circuit 3 and the constant current source driving circuit 4, and supplies power to the detector in the fiber-optic gyroscope 8 through a second connector 7; the signal RT +, RT-, TEC + and TEC-ends of the temperature control circuit 3 and the output end of the adjustable matching resistance circuit 5 are respectively connected with a thermistor, a refrigerating sheet and a tube core in the SLD light source in the optical fiber gyro 8 through a first connector 6, the output end of the constant current source driving circuit 4 is connected with the input end of the adjustable matching resistance circuit 5, a second connector 7 is connected with the signals +5V, -5V and GND of the detector in the optical fiber gyro 8, and the detector output voltage signal VP and the GND signal of the optical fiber gyro 8 are connected with the oscilloscope 9.
The temperature control circuit 3 adopts a TEC control chip ADN8831 to control the temperature, the input end of an operational amplifier in the chip and a thermistor with a negative temperature coefficient in an SLD light source in the optical fiber gyro 8 form a bridge circuit, when the internal temperature of the SLD light source in the optical fiber gyro 8 is inconsistent with a preset temperature, the operational amplifier outputs signals, a refrigerating sheet control circuit determines the working state of a refrigerating sheet according to the temperature value, and then drives the refrigerating sheet in the SLD light source in the optical fiber gyro 8 through a driving circuit formed by MOS (metal oxide semiconductor) tubes until the internal temperature of the SLD light source in the optical fiber gyro 8 is consistent with the preset temperature, so that the constant temperature state is controlled; the constant current source driving circuit 4 selects a constant current source chip LT3092, the output end OUT of the constant current source driving circuit is connected with the input end OUT of a knob switch 11 in the adjustable matching resistance circuit 5, each output pin of the knob switch 11 is connected with a resistor with different resistance values, namely 1.8 omega, 2.0 omega, 2.2 omega, 2.4 omega, 2.7 omega, 3.0 omega, 3.3 omega, 3.6 omega, 3.9 omega and 4.3 omega, the output end OUT1 of the adjustable matching resistance circuit 5 is connected with SLD + and SLD-signals of an SLD light source in the optical fiber gyroscope 8 through a first connector 6, the communication resistance value of the adjustable matching resistance circuit 5 can be changed through the knob switch 11, the output value of the current of the constant current source driving circuit is changed, the output voltage signal VP of a detector in the optical fiber gyroscope 8 is ensured to be between 0.5V and 1.3V, and the optical fiber gyroscope can be sensitive to correct angular rate information.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A control tool for batch production of fiber optic gyroscopes is characterized by comprising a power supply circuit, a temperature control circuit, a constant current source driving circuit and an adjustable matching resistance circuit;
the power supply circuit is used for supplying power to the temperature control circuit and the constant current source driving circuit;
the temperature control circuit is used for controlling the internal temperature of an SLD light source in the fiber-optic gyroscope to be consistent with a preset temperature;
the constant current source driving circuit and the adjustable matching resistance circuit are used for adjusting the current of the SLD light source in the whole working process of the fiber-optic gyroscope;
the output end of the adjustable matching resistance circuit is connected with the tube core of the SLD light source, and the output value of the current of the constant current source driving circuit is changed by changing the resistance value of the adjustable matching resistance circuit, so that the output voltage of the detector is ensured to be between 0.5V and 1.3V.
2. The control tool according to claim 1, wherein the adjustable matching resistor circuit (5) comprises a rotary switch (11), the output end of the constant current source driving circuit (4) is connected with the input end of the rotary switch (11) in the adjustable matching resistor circuit (5), each output pin of the rotary switch (11) is connected with a resistor with different resistance values, the resistors are respectively 1.8 Ω, 2.0 Ω, 2.2 Ω, 2.4 Ω, 2.7 Ω, 3.0 Ω, 3.3 Ω, 3.6 Ω, 3.9 Ω and 4.3 Ω, and the connection resistance value of the adjustable matching resistor circuit (5) is changed through the rotary switch (11).
3. The control tool set forth in claim 1, wherein the signal RT +, RT-, TEC + and TEC-terminals of the temperature control circuit (3) are connected to the thermistor and the cooling plate of the SLD light source; the output end of the adjustable matching resistance circuit (5) is connected with the tube core of the SLD light source; the output end of the constant current source driving circuit (4) is connected with the input end of the adjustable matching resistance circuit (5).
4. The control tool set forth in claim 3, wherein the signal RT +, RT-, TEC + and TEC-terminals of the temperature control circuit (3) and the output terminal of the adjustable matching resistance circuit (5) are respectively connected to the SLD light source through a first connector (6).
5. The control tool according to claim 4, further comprising a second connector (7), wherein the second connector (7) is connected with signals +5V, -5V and GND of a detector in the fiber-optic gyroscope (8), and the detector output voltage signal VP and the GND signal of the fiber-optic gyroscope (8) are connected with an oscilloscope (9).
6. The control tool according to any one of claims 1 to 5, wherein a TEC control chip ADN8831 is adopted in the temperature control circuit for temperature control, an input end of an operational amplifier inside the chip and a thermistor with a negative temperature coefficient inside the SLD light source form a bridge circuit, when the internal temperature of the light source is inconsistent with a preset temperature, the operational amplifier outputs a signal, a refrigerating sheet control circuit determines the working state of a refrigerating sheet according to the temperature value, and then a PWM wave output by the chip passes through a driving circuit formed by MOS (metal oxide semiconductor) tubes to drive the refrigerating sheet inside the SLD light source until the internal temperature of the SLD light source is consistent with the preset temperature.
7. The control tool according to any one of claims 1 to 5, wherein the power supply circuit adopts a voltage of +/-5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108394.9A CN113970907A (en) | 2021-09-22 | 2021-09-22 | Control tool for batch production of fiber-optic gyroscopes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108394.9A CN113970907A (en) | 2021-09-22 | 2021-09-22 | Control tool for batch production of fiber-optic gyroscopes |
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| CN113970907A true CN113970907A (en) | 2022-01-25 |
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| CN202111108394.9A Pending CN113970907A (en) | 2021-09-22 | 2021-09-22 | Control tool for batch production of fiber-optic gyroscopes |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354286A (en) * | 2008-09-23 | 2009-01-28 | 北京航空航天大学 | System for collecting SLD light source multiplex performance data |
| CN201967200U (en) * | 2010-12-29 | 2011-09-07 | 上海亨通光电科技有限公司 | Super radiation light-emitting diode driving circuit with temperature adjusting function |
| CN208140877U (en) * | 2018-04-08 | 2018-11-23 | 株洲菲斯罗克光电技术有限公司 | A kind of optical fibre gyro detection circuit test macro |
| CN210128717U (en) * | 2019-03-29 | 2020-03-06 | 上海亨通光电科技有限公司 | ADN 8835-based light-emitting diode temperature control device for fiber-optic gyroscope |
| CN210180455U (en) * | 2019-03-15 | 2020-03-24 | 上海亨通光电科技有限公司 | Miniaturized fiber-optic gyroscope constant current source circuit and fiber-optic gyroscope |
| CN112164967A (en) * | 2020-08-20 | 2021-01-01 | 河北汉光重工有限责任公司 | Stable ASE light source for optical fiber gyroscope |
-
2021
- 2021-09-22 CN CN202111108394.9A patent/CN113970907A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354286A (en) * | 2008-09-23 | 2009-01-28 | 北京航空航天大学 | System for collecting SLD light source multiplex performance data |
| CN201967200U (en) * | 2010-12-29 | 2011-09-07 | 上海亨通光电科技有限公司 | Super radiation light-emitting diode driving circuit with temperature adjusting function |
| CN208140877U (en) * | 2018-04-08 | 2018-11-23 | 株洲菲斯罗克光电技术有限公司 | A kind of optical fibre gyro detection circuit test macro |
| CN210180455U (en) * | 2019-03-15 | 2020-03-24 | 上海亨通光电科技有限公司 | Miniaturized fiber-optic gyroscope constant current source circuit and fiber-optic gyroscope |
| CN210128717U (en) * | 2019-03-29 | 2020-03-06 | 上海亨通光电科技有限公司 | ADN 8835-based light-emitting diode temperature control device for fiber-optic gyroscope |
| CN112164967A (en) * | 2020-08-20 | 2021-01-01 | 河北汉光重工有限责任公司 | Stable ASE light source for optical fiber gyroscope |
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