CN201955091U - Starting circuit of laser gyroscope - Google Patents
Starting circuit of laser gyroscope Download PDFInfo
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- CN201955091U CN201955091U CN 201020687487 CN201020687487U CN201955091U CN 201955091 U CN201955091 U CN 201955091U CN 201020687487 CN201020687487 CN 201020687487 CN 201020687487 U CN201020687487 U CN 201020687487U CN 201955091 U CN201955091 U CN 201955091U
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Abstract
The utility model discloses a starting circuit of a laser gyroscope, which comprises a PWM (Pulse Width Modulation) integrated control chip, a push-pull power conversion circuit, a resonance filtering circuit and a voltage-multiplying circuit, wherein the feedback signal input end of the PWM integrated control chip is connected to a ground wire and the output end is connected to the input end of the push-pull power conversion circuit; one end of the resonance filtering circuit is connected to the PWM integrated control chip and the other end is connected with the push-pull power conversion circuit; the output end of the push-pull power conversion circuit is connected with the voltage-multiplying circuit; and the voltage-multiplying circuit is connected to two ends of the laser gyroscope. In the utility model, the feedback signal input end of the PWM integrated control chip is connected to the ground wire to form open loop push-pull output; due to open loop output, the power supply is output at the maximum duty cycle, and the turn ratio of the original secondary side of a transformer is reduced while ensuring the high-voltage output; meanwhile, the sampling feedback link is eliminated due to open loop output, the reliability and anti-interference performance of the sampling link do not need to be considered, and the design difficulty and volume of the power supply are reduced.
Description
Technical field
The utility model relates to the starting circuit that is used for laser gyro.
Background technology
In recent years, the thinking of development of Laser strapdown inertial navigation system clear and definite high precision, miniaturization on developing direction.The single shaft machine laser gyroscope shaking starting voltage that adopts is about 6000V.Traditional power supply design, because input and output power supply ratio is very big, volume of transformer is very big, and the existing components and parts of sampling feedback link are withstand voltage low simultaneously, be subjected to the withstand voltage restriction of components and parts, for the sampling element component reliability and the very difficult solution of interference free performance of high pressure output; The insulation processing of the components and parts of filtering simultaneously requires high, and volume is big, and the output Filtering Processing is conflicted with miniaturization, and the output of starter high pressure is not generally carried out too many Filtering Processing, causes the starting electric source output ripple bigger; In addition because multiplication of voltage partly has the existence of multiplication of voltage electric capacity, after starter is finished, what charge stored can continue in the electric capacity discharges to holding circuit, the gyroscope associated loop is caused interference, actual measurement shows that trembling the type laser gyro at the single shaft machine itself requires in the high-precision system, need the above multiplication of voltage capacitance discharges of 1h, just can not bring influence to the precision of system, but at present inertial navigation system start-up time the longest be 5min, therefore the problems referred to above have influence on precision of gyroscope, and then have influence on the high-precision realization of miniaturized system.In order to overcome this contradiction, develop a kind of starting circuit of this system that is applicable to and just become very necessary and urgent.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, a kind of miniaturization laser gyro starting circuit of low interference is provided, make the gyroscope of using this starting circuit in system powers on back 5min, to reach high-precision requirement, and can satisfy the volume requirement of system.
A kind of laser gyro starting circuit that provides according to the utility model, comprise the integrated control chip of PWM, recommend power conversion circuit, resonator filter circuit and voltage-multiplying circuit, feedback signal input end in the integrated control chip of described PWM inserts ground wire, its output terminal is connected in described input end of recommending power conversion circuit, one end of described resonator filter circuit is connected in the integrated control chip of described PWM, an other end is connected with the described power conversion circuit of recommending, described output terminal of recommending power conversion circuit is connected with described voltage-multiplying circuit, and described voltage-multiplying circuit inserts the two ends of laser gyro.
A kind of laser gyro starting circuit that provides according to the utility model also has following attached technical characterictic:
The Enable Pin of the integrated control chip of described PWM connects isolates optocoupler B1, and the starter control signal converts enable signal to after isolating by described isolation optocoupler B1, and is delivered to the Enable Pin of the integrated control chip of described PWM.
The described power conversion circuit of recommending is made up of field effect transistor V11, field effect transistor V12 and transformer T3, described field effect transistor V11 is connected with the output terminal of the integrated control chip of described PWM respectively with field effect transistor V12, described field effect transistor V11 is connected with described transformer T3 with field effect transistor V12 simultaneously, and described transformer T3 output terminal is connected with described voltage-multiplying circuit.
Described resonator filter circuit is made of inductance L 5, capacitor C 21 and capacitor C 35, and the output terminal of described resonator filter circuit is connected with the intergrade of described transformer T3.
Described voltage-multiplying circuit is made up of capacitor C 1, capacitor C 2, capacitor C 3, diode D1, diode D2 and diode D3, and the output terminal of described voltage-multiplying circuit is connected in the laser gyro through filtering circuit and current-limiting resistance.
In the earth loop of described voltage-multiplying circuit, insert high-voltage diode.
A kind of laser gyro starting circuit that provides according to the utility model compared with prior art has following advantage: at first, the utility model inserts ground wire with the feedback signal input end in the integrated control chip of PWM, constitute open loop and recommend output, because open loop output, power supply is exported with maximum duty cycle, when guaranteeing high voltage output, can reduce the turn ratio of the former secondary of transformer, simultaneously because open loop output, cancellation sampling feedback link, sampling element reliability and interference free performance need not be considered, reduce the design difficulty and the volume of power supply, also improve the functional reliability of power supply simultaneously, and realized miniaturization.Secondly, the utility model utilizes the LC frequency-selecting to reach the reduction input current, regulates output voltage, when LC frequency and switching frequency near the time, output voltage is the highest, simultaneously because the existence of L, C, when reducing starting electric source work to importing the interference of power supply.Once more, the utility model guarantees that multiplication of voltage electric capacity not to system discharge, reduces the influence to system accuracy, and improves the reliability of power work by seal in high-voltage diode on earth loop.
Description of drawings
Fig. 1 is a circuit structure diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of control section of the present utility model.
Embodiment
Referring to Fig. 1 and Fig. 2, the embodiment of a kind of laser gyro starting circuit that provides at the utility model, comprise the integrated control chip of PWM, recommend power conversion circuit, resonator filter circuit and voltage-multiplying circuit, feedback signal input end in the integrated control chip of described PWM inserts ground wire, its output terminal is connected in described input end of recommending power conversion circuit, one end of described resonator filter circuit is connected in the integrated control chip of described PWM, an other end is connected with the described power conversion circuit of recommending, described output terminal of recommending power conversion circuit is connected with described voltage-multiplying circuit, and described voltage-multiplying circuit inserts the two ends of laser gyro.
Referring to Fig. 2, in the foregoing description that the utility model provides, the Enable Pin of the integrated control chip of described PWM connects isolates optocoupler B1, and the starter control signal converts enable signal to after isolating by described isolation optocoupler B1, and is delivered to the Enable Pin of the integrated control chip of described PWM.
Referring to Fig. 1 and Fig. 2, in the foregoing description that the utility model provides, the described power conversion circuit of recommending is made up of field effect transistor V11, field effect transistor V12 and transformer T3, described field effect transistor V11 is connected with the output terminal of the integrated control chip of described PWM respectively with field effect transistor V12, described field effect transistor V11 is connected with described transformer T3 with field effect transistor V12 simultaneously, and described transformer T3 output terminal is connected with described voltage-multiplying circuit.
Referring to Fig. 2, in the foregoing description that the utility model provides, described resonator filter circuit is made of inductance L 5, capacitor C 21 and capacitor C 35, and the output terminal of described resonator filter circuit is connected with the intergrade of described transformer T3.
Referring to Fig. 1 and Fig. 2, starter control signal QHH+5, the CQHL in the utility model converts to and imports+24V1 enable signal CON altogether after optocoupler B1 (model is HCPL-5630) isolates by isolating.
The oscillation frequency of the integrated control chip N3 of described PWM (model is SG1525A) is by the capacitance-resistance decision of port PIN5, PIN6.Port PIN1 is the feedback signal input end, it is the relatively negative input end of amplifier of chip, it is inserted ground wire, make system's operate in open loop state, the output port PIN11 of chip, PIN14 is with maximum duty cycle output (near 50%), therefore the number of turn on the former limit of transformer T3 can suitably reduce. during owing to the design of closed loop ring feed source, dutycycle can not be got maximal value, thus this method for designing at the transformer secondary to the ratio on former limit under the lower situation during also than close-loop feedback, i.e. the high pressure of exportable requirement; The final total number of turn of the former secondary of transformer obtains reducing, and the number of plies reduces, and the number of plies that layer insulation is handled also reduces, and volume of transformer is reduced.
Port PIN10 is the Enable Pin of the integrated control chip N3 of PWM, when enable signal CON is low level, and the integrated control chip N3 work of PWM; When enable signal CON was high level, the integrated control chip N3 of PWM did not work.Port PIN11, PIN14 enable signal CON for low level the complementary square-wave signal (signal frequency is f/2) of time output, this complementary square-wave signal drives field effect transistor V11, V12.
Field effect transistor V11, V12 and transformer T3 composition are recommended power conversion circuit; Inductance L 5 and capacitor C 21, C35 form the input voltage loop of the T3 of transformer, inductance L 5, capacitor C 21 and C35 have the function to input power supply+24V1 filtering, this part has also been formed a resonant circuit, because the load of out-put supply is very little, output voltage values depends on the maximal value of input voltage.When its frequency
Wherein C is a capacitor C 21 and end value after C35 is in parallel, frequency
Driving signal frequency f with field effect transistor V11, V12
PWM/ 2 is approaching more, and the intergrade output voltage (ACH, ACL) high more, final output is also high more, can reduce the volume of transformer T3 like this, simultaneously because the existence of inductance L 5, capacitor C 21 and C35, the intergrade output voltage is quasi sine output, can reduce the ripple peak-to-peak value behind the voltage multiplying rectifier like this.Because capacitor C 21, the effect special role of C35 is so electric capacity need select precision to be not less than 10% oscillating capacitance.
Referring to Fig. 1, in the foregoing description that the utility model provides, described voltage-multiplying circuit is made up of capacitor C 1, capacitor C 2, capacitor C 3, diode D1, diode D2 and diode D3, and the output terminal of described voltage-multiplying circuit is connected in the laser gyro through filtering circuit C4 and current-limiting resistance R2.
Referring to Fig. 1, in the foregoing description that the utility model provides, in the earth loop of described voltage-multiplying circuit, insert high-voltage diode D6.For reducing lasting the discharging of multiplication of voltage electric capacity to system circuit, starting electric source ground that should be altogether seals in high-voltage diode D6 on earth loop, guarantee that like this multiplication of voltage electric capacity is not to system discharge, simultaneously also help improving output voltage, further reduce the volume of power supply.
Claims (6)
1. laser gyro starting circuit, it is characterized in that: comprise the integrated control chip of PWM, recommend power conversion circuit, resonator filter circuit and voltage-multiplying circuit, feedback signal input end in the integrated control chip of described PWM inserts ground wire, its output terminal is connected in described input end of recommending power conversion circuit, one end of described resonator filter circuit is connected in the integrated control chip of described PWM, an other end is connected with the described power conversion circuit of recommending, described output terminal of recommending power conversion circuit is connected with described voltage-multiplying circuit, and described voltage-multiplying circuit inserts the two ends of laser gyro.
2. a kind of laser gyro starting circuit as claimed in claim 1, it is characterized in that: the Enable Pin of the integrated control chip of described PWM connects isolates optocoupler B1, the starter control signal converts enable signal to after isolating by described isolation optocoupler B1, and is delivered to the Enable Pin of the integrated control chip of described PWM.
3. a kind of laser gyro starting circuit as claimed in claim 1, it is characterized in that: the described power conversion circuit of recommending is made up of field effect transistor V11, field effect transistor V12 and transformer T3, described field effect transistor V11 is connected with the output terminal of the integrated control chip of described PWM respectively with field effect transistor V12, described field effect transistor V11 is connected with described transformer T3 with field effect transistor V12 simultaneously, and described transformer T3 output terminal is connected with described voltage-multiplying circuit.
4. a kind of laser gyro starting circuit as claimed in claim 3 is characterized in that: described resonator filter circuit is made of inductance L 5, capacitor C 21 and capacitor C 35, and the output terminal of described resonator filter circuit is connected with the intergrade of described transformer T3.
5. a kind of laser gyro starting circuit as claimed in claim 1, it is characterized in that: described voltage-multiplying circuit is made up of capacitor C 1, capacitor C 2, capacitor C 3, diode D1, diode D2 and diode D3, and the output terminal of described voltage-multiplying circuit is connected in the laser gyro through filtering circuit and current-limiting resistance.
6. a kind of laser gyro starting circuit as claimed in claim 1 is characterized in that: insert high-voltage diode in the earth loop of described voltage-multiplying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020687487 CN201955091U (en) | 2010-12-17 | 2010-12-17 | Starting circuit of laser gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020687487 CN201955091U (en) | 2010-12-17 | 2010-12-17 | Starting circuit of laser gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955091U true CN201955091U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020687487 Expired - Lifetime CN201955091U (en) | 2010-12-17 | 2010-12-17 | Starting circuit of laser gyroscope |
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| CN (1) | CN201955091U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630128A (en) * | 2013-11-06 | 2014-03-12 | 北京航天时代激光导航技术有限责任公司 | Circuit of single transformer for realizing luminance building-up and maintaining functions of laser gyroscope high-voltage power supply |
| CN110440781A (en) * | 2019-06-21 | 2019-11-12 | 西安德讯威光电测控技术有限公司 | A kind of high voltage power supply for laser gyro |
| CN113726172A (en) * | 2021-07-20 | 2021-11-30 | 北京航天时代激光导航技术有限责任公司 | Aging high-voltage power supply |
| CN117891303A (en) * | 2024-03-18 | 2024-04-16 | 湖南二零八先进科技有限公司 | Laser gyro and maintenance power supply and adjustment method thereof |
| CN117891303B (en) * | 2024-03-18 | 2024-05-10 | 湖南二零八先进科技有限公司 | Laser gyro and maintenance power supply and adjustment method thereof |
-
2010
- 2010-12-17 CN CN 201020687487 patent/CN201955091U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630128A (en) * | 2013-11-06 | 2014-03-12 | 北京航天时代激光导航技术有限责任公司 | Circuit of single transformer for realizing luminance building-up and maintaining functions of laser gyroscope high-voltage power supply |
| CN103630128B (en) * | 2013-11-06 | 2017-02-15 | 北京航天时代激光导航技术有限责任公司 | Circuit of single transformer for realizing luminance building-up and maintaining functions of laser gyroscope high-voltage power supply |
| CN110440781A (en) * | 2019-06-21 | 2019-11-12 | 西安德讯威光电测控技术有限公司 | A kind of high voltage power supply for laser gyro |
| CN113726172A (en) * | 2021-07-20 | 2021-11-30 | 北京航天时代激光导航技术有限责任公司 | Aging high-voltage power supply |
| CN117891303A (en) * | 2024-03-18 | 2024-04-16 | 湖南二零八先进科技有限公司 | Laser gyro and maintenance power supply and adjustment method thereof |
| CN117891303B (en) * | 2024-03-18 | 2024-05-10 | 湖南二零八先进科技有限公司 | Laser gyro and maintenance power supply and adjustment method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
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| CX01 | Expiry of patent term |