Laser gyroscope power supply system

Abstract

The invention provides a power supply system of a laser gyroscope, which belongs to the technical field of power supplies and is characterized in that switching noise is filtered through a pi-type filtering module, the switching noise is prevented from being introduced into a bus power supply, and the quality of an input power supply is protected; boosting the first bus power supply signal through an energy storage boosting module, and storing energy and transmitting the energy to a rear stage; the voltage-multiplying filtering module is used for carrying out voltage-multiplying filtering processing on the first conversion signal of the energy storage boosting module, so that the first conversion signal reaches the voltage required by the frequency-stabilized power supply; the output linear voltage stabilization module is used for improving the quality of the gyroscope power supply, and meanwhile, an abnormal voltage current-limiting protection function is added in the output linear voltage stabilization module, so that the working stability and reliability of the gyroscope power supply are improved. The laser gyroscope power supply system can well adapt to unstable influence caused by interference of a bus power supply, interference of a gyroscope power supply to the bus power supply is avoided, and meanwhile, the quality and efficiency of output ripples of the gyroscope power supply are greatly improved, so that the stability and precision of the power supply are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power supply, in particular to a laser gyroscope power supply system, and aims to improve the frequency stabilization power supply and the jitter power supply of the laser gyroscope. Background Art

[0002] The laser gyroscope is a high-precision navigation and positioning device used to accurately determine the orientation of a moving object. It has a wide range of applications in aerospace, military, precision manufacturing and other technical fields. The laser gyroscope uses the optical path difference to measure the rotational angular velocity of an object. Its core working principle mainly relies on the interference effect of the laser beam. The efficiency and quality of the power supply system used by the laser gyroscope directly affect the control accuracy of the gyroscope, and thus affect the measurement accuracy of the gyroscope. Therefore, the performance of the laser beam depends to a large extent on the stability and accuracy of the frequency-stabilized power supply, and the laser gyroscope has extremely high requirements for the quality and efficiency of the power supply system.

[0003] At present, the power supply systems used in laser gyroscopes on the market have many shortcomings. For example, the output voltage of the frequency-stabilized power supply fluctuates greatly, has low efficiency, and is easily affected by external environmental factors, resulting in a decrease in the performance of the laser gyroscope. In addition, most of the existing laser gyroscope power supply control systems use complex circuit structures and control algorithms, resulting in high system costs, poor reliability, difficult maintenance, and low efficiency. At the same time, due to problems such as unstable power supply and low efficiency, the accuracy and stability of the laser gyroscope are often affected, thereby affecting the accuracy of navigation and positioning. Summary of the invention

[0004] In view of the shortcomings of the existing gyroscope power supply system described in the above background technology, the present invention aims to provide a high-efficiency and reliable laser gyroscope frequency stabilization power supply system and jitter power supply system, which improves the system's power efficiency, stability and accuracy, reduces system cost and maintenance difficulty, and meets the laser gyroscope's demand for high-precision and high-stability power supply by optimizing the circuit topology and adding protection measures.

[0005] The present invention discloses a laser gyroscope power supply system, comprising a frequency-stabilizing power supply for the laser gyroscope, wherein the frequency-stabilizing power supply comprises a first π-type filter module, a first energy storage boost module, a voltage doubling filter module and an output linear voltage stabilizing module which are sequentially connected along the transmission direction of the electrical signal;

[0006] The first π-type filtering module is used to obtain a bus power signal, filter the switching noise in the bus power signal to form a first bus power signal, and send the first bus power signal to the first energy storage boost module;

[0007] The first energy storage and boosting module is used to store and boost the first bus power supply signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a first conversion signal, and send the first conversion signal to the voltage doubling filter module;

[0008] The voltage doubling filter module is used to receive the first conversion signal, perform voltage doubling and preliminary filtering on the first conversion signal to form a first voltage doubling filter signal, and transmit the first voltage doubling filter signal to the output linear voltage stabilization module;

[0009] The output linear voltage stabilization module is used to receive the first voltage doubler filter signal, perform filtering and current limiting processing on the first voltage doubler filter signal, form a stable frequency-stabilized power supply signal, and transmit it to the frequency stabilization circuit for operation of the frequency stabilization circuit of the laser gyroscope.

[0010] It is further defined that the frequency-stabilized power supply further includes a first linear voltage stabilization module connected to the power management chip on the first energy storage boost module,

[0011] The first linear voltage regulator module is used to obtain a voltage signal from a bus power supply, step down and shape the voltage signal to form a first shaped voltage, and use the first shaped voltage as the operating voltage of the power management chip in the first energy storage boost module, so that the power management chip in the first energy storage boost module can work at maximum efficiency.

[0012] It is further defined that the frequency-stabilized power supply further includes a first feedback module, the input end of the first feedback module is connected to the output end of the voltage-doubling filter module, and the output end of the first feedback module is connected to the input end of the first energy storage boost module;

[0013] The first feedback module is used to perform closed-loop control on the frequency-stabilized power supply.

[0014] It is further defined that the laser gyro power supply system also includes a jitter power supply system for the laser gyro, the jitter power supply includes a positive power supply generation system and a negative power supply generation system, the positive power supply generation system and the negative power supply generation system are both connected to the jitter circuit, and the positive power supply generation system is connected to the negative power supply generation system;

[0015] The positive power generation system comprises a second π-type filter module, a second energy storage boost module and a second filter module which are sequentially connected along the transmission direction of the input power signal;

[0016] The second π-type filtering module is used to obtain a bus power signal, filter the switching noise in the bus power signal to form a second bus power signal, and send the second bus power signal to the second energy storage boost module;

[0017] A second energy storage and boosting module is used to store and boost the second bus power supply signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a second conversion signal, and send the second conversion signal to the second filtering module;

[0018] The second filtering module is used to receive the second conversion signal, filter the second conversion signal, form a jitter power supply signal and send it to the jitter circuit for the operation of the jitter circuit.

[0019] It is further defined that the positive power generation system further includes a second feedback module and a second linear voltage regulator module connected to the power management chip on the second energy storage boost module;

[0020] The second linear voltage regulator module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a second shaped voltage, and use the second shaped voltage as the working voltage of the power management chip in the second energy storage boost module, so that the power management chip in the second energy storage boost module can work at maximum efficiency;

[0021] The input end of the second feedback module is connected to the output end of the second filtering module, and the output end of the second feedback module is connected to the input end of the second energy storage boost module; the second feedback module is used to perform closed-loop control on the positive power generation system.

[0022] It is further defined that the negative power generation system comprises a third π-type filter module, a third energy storage boost module, a third filter module and a signal processing module which are sequentially connected along the transmission direction of the input power signal;

[0023] The third π-type filtering module is used to obtain the bus power signal, filter the switching noise in the bus power signal to form a third bus power signal, and send the third bus power signal to the third energy storage boost module;

[0024] The third energy storage and boosting module is used to store and boost the third bus power signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a third conversion signal, and send the third conversion signal to the third filtering module;

[0025] The third filtering module is used to receive the third conversion signal, filter the third conversion signal, form a jitter power signal and send it to the jitter circuit for the operation of the jitter circuit;

[0026] The signal processing module is used to receive the third filtered signal, invert the third filtered signal into a positive voltage signal, and feed the positive voltage signal back to the third energy storage boost module of the positive power generation system.

[0027] It is further defined that the negative power generation system further includes a third feedback module and a third linear voltage regulator module connected to the power management chip on the third energy storage boost module;

[0028] The third linear voltage stabilization module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a third shaped voltage, and use the third shaped voltage as the working voltage of the power management chip in the third energy storage boost module, so that the power management chip in the third energy storage boost module can work at maximum efficiency;

[0029] The input end of the third feedback module is connected to the output end of the signal processing module, and the output end of the third feedback module is connected to the input end of the third energy storage boost module; the third feedback module is used to perform closed-loop control on the negative power generation system.

[0030] It is further defined that the energy storage boost circuit used by the first energy storage boost module, the second energy storage boost module and the third energy storage boost module is the same, and the energy storage boost circuit includes a power management chip, an inductor L2, a transistor Q1, a MOS tube Q2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a voltage regulator diode D1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8;

[0031] One end of the resistor R1 is connected to the emitter of the transistor Q1 and one end of the inductor L2; the other end of the resistor R1 is connected to the base of the transistor Q1 and one end of the voltage-stabilizing diode D1; the other end of the voltage-stabilizing diode D1 and one end of the capacitor C3 are grounded; the other end of the capacitor C3 is connected to the collector of the transistor Q1, the power management chip and one end of the capacitor C4; the other end of the capacitor C4 is grounded; the other end of the inductor L2 is connected to the drain of the MOS tube Q2;

[0032] The gate of the MOS tube Q2 is connected to the power management chip through the resistor R2; the source of the MOS tube Q2 is connected to one end of the resistor R3 and one end of the resistor R4; the other end of the resistor R4 is grounded; the other end of the resistor R3 is connected to the power management chip and one end of the capacitor C5; the other end of the capacitor C5 is grounded;

[0033] One end of the capacitor C6 is connected to the power management chip; the other end of the capacitor C6 is grounded;

[0034] One end of the resistor R6 is connected to the power management chip; the other end of the resistor R6 is connected to both the power management chip and one end of the capacitor C7; the other end of the capacitor C7 is grounded;

[0035] One end of the capacitor C8 is grounded; the other end of the capacitor C8 is connected to the power management chip;

[0036] One end of the resistor R5 is connected to one end of the capacitor C7 and one end of the capacitor C8; the other end of the resistor R5 is connected to the power management chip; the other end of the capacitor C7 is connected to the other end of the capacitor C8.

[0037] It is further defined that the output linear voltage stabilization module includes a resistor R16, a resistor R17, a resistor R18, a transistor Q3, a voltage stabilizing diode D7, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18 and a capacitor C19;

[0038] Resistor R16 is connected to one end of capacitor C15, one end of capacitor C16, one end of resistor R17, one end of resistor R18 and the emitter of transistor Q3; the other end of capacitor C15 and the other end of capacitor C16 are both grounded; the other end of resistor R17 is connected to one end of capacitor C17, one end of voltage-stabilizing diode D7 and the base of transistor Q3; the other end of capacitor C17 and the other end of voltage-stabilizing diode D7 are both grounded; the other end of resistor R18 is connected to one end of capacitor C19; the collector of transistor Q3 is connected to one end of capacitor C18; the other end of capacitor C19 and the other end of capacitor C18 are both grounded.

[0039] It is further defined that the signal processing module includes a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R19 and an interface;

[0040] One end of the resistor R9 is connected to one end of the resistor R10; the other end of the resistor R10 is connected to both the interface and one end of the resistor R11; the other end of the resistor R11 is connected to both the interface and one end of the resistor R12; the other end of the resistor R12 is connected to both one end of the resistor R13 and the resistor R14; the other end of the resistor R13 is grounded;

[0041] One end of the resistor R19 and the resistor R15 are both connected to the interface; the other end of the resistor R19 is grounded.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. A laser gyroscope frequency-stabilized power supply system, wherein the frequency-stabilized power supply is provided with a first π-type filter module, a first energy storage boost module, a voltage doubling filter module and an output linear voltage stabilization module, and the switching noise is filtered by the first π-type filter module to avoid the switching noise and other ripples from affecting the input power bus, and to avoid the first energy storage boost module from interfering with the bus power supply, and at the same time, the output ripple quality and efficiency of the gyroscope power supply are greatly improved, thereby improving the stability and accuracy of the power supply. The present invention performs linear voltage stabilization through the first linear voltage stabilization module, so that the power management chip in the first energy storage boost module is in the voltage operation of the optimal efficiency; the first energy storage boost module performs energy storage boosting on the first bus power supply signal to provide the required energy and primary voltage for the load; the voltage doubling filter module further boosts the first conversion signal to make it reach the voltage value required by the frequency-stabilized power supply; the output linear voltage stabilization module is used to further filter the power supply voltage to improve the quality of the frequency-stabilized power supply, and the output linear voltage stabilization module has a current limiting protection function for abnormal voltage, thereby increasing the stability, reliability and power quality of the frequency-stabilized power supply. The frequency-stabilized power supply of the present invention is further provided with a first feedback module, through which the frequency-stabilized power supply is closed-loop controlled to improve the quality, stability and precision of the output signal of the frequency-stabilized power supply.

[0044] 2. In the present invention, the positive power generation system is provided with a second π-type filter module, a second linear voltage regulator module, and a second energy storage boost module. The second π-type filter module is used to filter the switching noise to avoid the switching noise and other ripples from affecting the input power bus, and to avoid the second energy storage boost module from interfering with the bus power supply. At the same time, the output ripple quality and efficiency of the gyroscope power supply are greatly improved, thereby improving the stability and accuracy of the power supply. The present invention performs linear voltage stabilization through the second linear voltage regulator module, so that the power management chip in the second energy storage boost module is in the voltage operation of the optimal efficiency; the second energy storage boost module boosts and stores the second bus power supply signal, and provides the required energy and voltage value for the load, so that it reaches the voltage value required for the jitter positive power supply. The positive power generation system of the present invention is also provided with a second feedback module, and the frequency-stabilized power supply is closed-loop controlled by the second feedback module to improve the load capacity, stability and accuracy of the jitter positive power supply output signal, and further ensure the accuracy of laser gyroscope navigation and positioning.

[0045] 3. In the present invention, the negative power supply generation system is provided with a third π-type filter module, a third linear voltage regulator module, and a third energy storage boost module. The third π-type filter module is used to filter the switching noise to avoid the switching noise and other ripples from affecting the input power bus, and to avoid the third energy storage boost module from interfering with the bus power supply. At the same time, the output ripple quality and efficiency of the gyroscope power supply are greatly improved, thereby improving the stability and accuracy of the power supply. The third linear voltage regulator module is used to perform linear voltage stabilization, so that the power management chip in the third energy storage boost module is in the voltage operation of the optimal efficiency; the third energy storage boost module performs energy storage boost on the input power supply to provide the required energy and voltage value for the load, so that it reaches the voltage value required for the jitter positive power supply. The negative power supply generation system of the present invention is also provided with a third feedback module, and the third feedback module is used to perform closed-loop control on the frequency-stabilized power supply, so as to improve the load capacity, stability and accuracy of the jitter positive power supply output signal, and further ensure the accuracy of laser gyroscope navigation and positioning.

[0046] 4. The negative power supply generating system of the present invention also includes a signal processing module, which inverts the negative voltage into a positive voltage, so that the load of the positive power supply generating system and the negative power supply generating system is balanced, and the ability of the jitter power supply to handle load imbalance is improved, thereby improving the load capacity of the jitter power supply and the quality of the output signal.

[0047] 5. The boost in the first energy storage boost module, the second energy storage boost module and the third energy storage boost module of the present invention all adopts the charge pump principle, which improves the efficiency and stability of the power conversion process through capacitor boost and transformerless boost electromagnetic conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of a frequency-stabilized power supply;

[0049] Figure 2 Schematic diagram of the positive power generation system;

[0050] Figure 3 A schematic diagram of a negative power generation system;

[0051] Figure 4 It is a structural schematic diagram of an energy storage boost circuit;

[0052] Figure 5 It is a structural diagram of the output linear voltage regulator module;

[0053] Figure 6 It is a structural diagram of the signal processing module. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation modes described below.

[0055] See also Figure 1 The present invention provides a laser gyroscope power supply system, comprising a frequency-stabilizing power supply for the laser gyroscope, wherein the frequency-stabilizing power supply comprises a first π-type filter module, a first energy storage boost module, a voltage doubling filter module, an output linear voltage stabilizing module and a frequency stabilizing circuit which are sequentially connected along the transmission direction of the electrical signal;

[0056] The first π-type filter module is used to obtain the bus power supply signal, filter the switching noise in the bus power supply signal, form the first bus power supply signal, and send the first bus power supply signal to the first energy storage boost module; it is used to prevent the interference introduced by the bus power supply and avoid the first boost energy storage module from interfering with the bus power supply. Among them, the specific circuit structure of the first π-type filter module belongs to the technology well known to those skilled in the art. The inductor of the first π-type filter module uses a small ferrite core inductor and is matched with large and small capacitors to suppress the interference of signals such as switching noise in the power supply system on the power bus and protect the bus power supply.

[0057] The first energy storage and boosting module is used to store and boost the first bus power supply signal to provide the energy and primary voltage required by the load, form a first conversion signal, and send the first conversion signal to the voltage doubling filter module.

[0058] The voltage doubling filter module is used to receive the first conversion signal, perform voltage doubling and filtering processing on the first conversion signal to form a first voltage doubling filter signal, and send the first voltage doubling filter signal to the output linear voltage stabilization module; the specific circuit structure of the voltage doubling filter module is well known to those skilled in the art. In order to reduce the withstand voltage requirements of the inductor L2, the transistor Q1 and the MOS tube Q2 in the first energy storage boost module, the 100V voltage of the first conversion signal is processed into 300V through the voltage doubling filter module to meet the voltage value requirements of the frequency-stabilized power supply. A fast recovery diode is selected in the voltage doubling filter module, and its conduction voltage drop and recovery time are strictly selected to further reduce the energy loss in the circuit.

[0059] The output linear voltage stabilization module is used to receive the first voltage doubling filter signal, and perform high-quality filtering through devices such as voltage regulator tubes and triodes to form a stable and high-quality power supply to be transmitted to the frequency stabilization circuit for the operation of the laser gyroscope's frequency stabilization circuit. A current limiting protection function is added to the linear voltage stabilization module to prevent the capacitor in the frequency stabilization power supply from being charged to generate a large current at the moment of power-on and the residual power of the output power supply capacitor is not completely released at the moment of power-off, causing damage to the frequency stabilization circuit, thereby protecting the circuit, improving the quality of the frequency stabilization power supply, and increasing the stability and reliability of the frequency stabilization power supply. Among them, the specific circuit structure of the first filtering module belongs to the technology known to those skilled in the art.

[0060] In the present invention, the frequency-stabilized power supply also includes a first linear voltage regulator module, which performs voltage step-down shaping on the voltage signal to form a first shaped voltage, and uses the first shaped voltage as the working voltage of the power management chip in the first energy storage boost module, so that the power management chip in the first energy storage boost module can work at the maximum efficiency. That is, the optimal voltage of the first energy storage boost module is obtained through the first linear voltage regulator module, so that the power management chip in the first energy storage boost module works at the voltage with the best efficiency. The specific circuit structure of the first linear voltage regulator module belongs to the technology known to those skilled in the art, wherein the first linear voltage regulator module combines the voltage regulator diode of the optimal working voltage required by the power management chip of the first energy storage boost module at the rear end, and cooperates with the triode, the resistor and the capacitor to perform linear voltage stabilization on the input signal and supply it to the power management chip, so that the power management chip works at the voltage at which it always works at the best efficiency.

[0061] In the present invention, the frequency-stabilized power supply also includes a first feedback module, the input end of the first feedback module is connected to the output end of the first filtering module, and the output end of the first feedback module is connected to the input end of the first energy storage boost module; the first feedback module is used to perform closed-loop control on the frequency-stabilized power supply, improve the output quality of the frequency-stabilized power supply signal, select a suitable feedback network, improve the response speed and improve the quality of the output power supply.

[0062] See also Figure 2 In the present invention, the laser gyroscope power supply system also includes a jitter power supply system, the jitter power supply system includes a positive power supply generation system and a negative power supply generation system, the positive power supply generation system and the negative power supply generation system are both connected to the jitter circuit, and the positive power supply generation system and the negative power supply generation system are connected; the positive power supply generation system includes a second π-type filter module and a second linear voltage stabilization module, a second energy storage boost module, a second filter module and a second feedback module which are sequentially connected along the transmission direction of the positive power supply signal;

[0063] The second π-type filter module is used to obtain the bus power signal, filter the switching noise in the bus power signal to form a second bus power signal, and send the second bus power signal to the second energy storage boost module; suppress the interference of signals such as switching noise on the power bus; the specific circuit structure and function of the second π-type filter module are the same as those of the first π-type filter module.

[0064] The second linear voltage regulator module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a second shaped voltage, and use the second shaped voltage as the operating voltage of the power management chip in the second energy storage boost module, so that the power management chip in the second energy storage boost module can work at maximum efficiency; the specific circuit structure and function of the second linear voltage regulator module are the same as those of the first linear voltage regulator module.

[0065] The second energy storage and boost module is used to store and boost the second bus power supply signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a second conversion signal, and send the second conversion signal to the second filtering module; the specific circuit structure and function of the second energy storage and boost module are the same as those of the first energy storage and boost module.

[0066] The second filtering module is used to receive the second conversion signal, filter the second conversion signal, form a high-quality jitter power supply signal and send it to the jitter circuit for the operation of the jitter circuit; the specific circuit structure and function of the second filtering module are the same as those of the first filtering module.

[0067] The positive power generation system also includes a second feedback module, the input end of the second feedback module is connected to the output end of the second filtering module, and the output end of the second feedback module is connected to the input end of the second energy storage boost module; the second feedback module is used to perform closed-loop control on the positive power generation system, and the specific circuit structure and function of the second feedback module are the same as those of the first feedback module.

[0068] See also Figure 3 , in the present invention, the negative power generation system includes a third π-type filter module, a third linear voltage stabilization module, a third energy storage boost module, a third filter module and a signal processing module which are sequentially connected along the transmission direction of the input power signal;

[0069] The third π-type filter module is used to obtain the bus power signal, filter the switching noise in the bus power signal to form a third bus power signal, and send the third bus power signal to the third energy storage boost module; suppress the interference of signals such as switching noise on the power bus; the specific circuit structure and function of the third π-type filter module are the same as those of the first π-type filter module.

[0070] The third linear voltage regulator module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a third shaped voltage, and use the third shaped voltage as the working voltage of the power management chip in the third energy storage boost module, so that the power management chip in the third energy storage boost module can work at the maximum efficiency; the optimal voltage of the third energy storage boost module is obtained through the third linear voltage regulator module, so that the power management chip in the third energy storage boost module works at the voltage with the optimal efficiency; the specific circuit structure and function of the third linear voltage regulator module are the same as those of the first linear voltage regulator module.

[0071] The third energy storage boost module is used to store energy and boost the third bus power signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a third conversion signal, and send the third conversion signal to the third filtering module; the specific circuit structure and function of the third energy storage boost module are the same as those of the first energy storage boost module.

[0072] The third filtering module is used to receive the third conversion signal, filter the third conversion signal, form a high-quality jitter power supply signal and send it to the jitter circuit for the operation of the jitter circuit; the specific circuit structure and function of the third filtering module are the same as those of the first filtering module.

[0073] The signal processing module is used to receive the third filtered signal, invert the negative voltage of the third filtered signal into a positive voltage and feed it back to the third energy storage boost module; because the jitter power supply is a positive and negative power supply, and the load is unbalanced, in order to improve the load capacity of the jitter power supply and the quality of the output signal, the positive power supply generation system and the negative power supply generation system are controlled separately, wherein the positive power supply generation system is similar to the design concept of the frequency-stabilized power supply system, but the jitter circuit does not have particularly high requirements for power quality, and the output linear voltage regulator module of the frequency-stabilized power supply system is not required. The feedback of the negative power supply requires a positive power supply input, so the output negative voltage needs to be inverted through the signal processing module to generate a positive voltage for use by the feedback pin of the power management chip. The parameter selection in the signal processing module needs to be determined in combination with the output power supply voltage, the operational amplifier, and the feedback pin voltage of the power management chip.

[0074] The negative power generation system also includes a third feedback module, the input end of the third feedback module is connected to the output end of the signal processing module, and the output end of the third feedback module is connected to the input end of the third energy storage boost module; the third feedback module is used to perform closed-loop control on the negative power generation system; the specific circuit structure and function of the third feedback module are the same as those of the first feedback module.

[0075] See also Figure 4 The first energy storage boost module, the second energy storage boost module and the third energy storage boost module use the same energy storage boost circuit, which includes a power management chip, an inductor L2, a transistor Q1, a MOS tube Q2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a voltage regulator diode D1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8;

[0076] One end of the resistor R1 is connected to the emitter of the transistor Q1 and one end of the inductor L2, and the connection node is the first input terminal; the other end of the resistor R1 is connected to the base of the transistor Q1 and one end of the voltage-stabilizing diode D1; the other end of the voltage-stabilizing diode D1 and one end of the capacitor C3 are grounded; the other end of the capacitor C3 is connected to the collector of the transistor Q1, the power management chip and one end of the capacitor C4; the other end of the capacitor C4 is grounded; the other end of the inductor L2 is connected to the drain of the MOS tube Q2, and the connection node is the output terminal;

[0077] The gate of the MOS tube Q2 is connected to the power management chip through the resistor R2; the source of the MOS tube Q2 is connected to one end of the resistor R3 and one end of the resistor R4; the other end of the resistor R4 is grounded; the other end of the resistor R3 is connected to the power management chip and one end of the capacitor C5; the other end of the capacitor C5 is grounded;

[0078] One end of the capacitor C6 is connected to the power management chip; the other end of the capacitor C6 is grounded;

[0079] One end of the resistor R6 is connected to the power management chip; the other end of the resistor R6 is connected to both the power management chip and one end of the capacitor C7; the other end of the capacitor C7 is grounded;

[0080] One end of the capacitor C8 is grounded; the other end of the capacitor C8 is connected to the power management chip;

[0081] One end of the resistor R5 is connected to one end of the capacitor C7 and one end of the capacitor C8; the other end of the resistor R5 is connected to the power management chip; the other end of the capacitor C7 is connected to the other end of the capacitor C8, and the connection node is the second input terminal.

[0082] Among them, the power management chip uses a power management chip with high efficiency, low ripple and high stability, the inductor L2 is a high-voltage energy storage inductor, and the MOS tube Q2 uses a MOS tube with a faster shutdown time and a suitable switching frequency.

[0083] When the energy storage boost circuit corresponds to the first energy storage boost module, the first input end is connected to the first π-type filter module, the second input end is connected to the first feedback module, and the output end is connected to the voltage doubling filter module. When the energy storage boost circuit corresponds to the second energy storage boost module, the first input end is connected to the second π-type filter module, the second input end is connected to the second feedback module, and the output end is connected to the second filter module; when the energy storage boost circuit corresponds to the third energy storage boost module, the first input end is connected to the third π-type filter module, the second input end is connected to the third feedback module, and the output end is connected to the third filter module.

[0084] See also Figure 5 The output linear voltage regulator module includes a resistor R16, a resistor R17, a resistor R18, a MOS tube Q3, a voltage regulator diode D7, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18 and a capacitor C19;

[0085] One end of the resistor R16 is the input end; the other end of the resistor R16 is connected to one end of the capacitor C15, one end of the capacitor C16, one end of the resistor R17, one end of the resistor R18 and the emitter of the transistor Q3; the other end of the capacitor C15 and the other end of the capacitor C16 are both grounded; the other end of the resistor R17 is connected to one end of the capacitor C17, one end of the voltage-stabilizing diode D7 and the base of the transistor Q3; the other end of the capacitor C17 and the other end of the voltage-stabilizing diode D7 are both grounded; the other end of the resistor R18 is connected to one end of the capacitor C19; the collector of the transistor Q3 is connected to one end of the capacitor C18; the other end of the capacitor C19 and the other end of the capacitor C18 are both grounded; the collector of the transistor Q3 and the capacitor C18 are both connected to the frequency stabilization circuit; the input end is connected to the first voltage doubling filter module and the first feedback module.

[0086] See also Figure 6 , the signal processing module includes a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R19 and an interface;

[0087] One end of resistor R9 is connected to one end of resistor R10, and the other end of resistor R9 is an input end, which is connected to the jitter negative power output of the jitter negative power control system; the other end of resistor R10 is connected to both the interface and one end of resistor R11; the other end of resistor R11 is connected to both the interface and one end of resistor R12; the other end of resistor R12 is connected to both one end of resistor R13 and one end of resistor R14; the other end of resistor R13 is grounded; the other end of resistor R14 is connected to the second energy storage boost module of the positive power generation system, that is, the feedback pin of the jitter negative power control system.

[0088] One end of the resistor R19 and the resistor R15 are both connected to the interface; the other end of the resistor R19 is grounded.

[0089] Figure 6 The VCC7.5 connection terminal and the VCC15 connection terminal are both used to connect to the third filtering module.

[0090] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A laser gyroscope power supply system, characterized in that: It includes a frequency-stabilized power supply for a laser gyroscope, wherein the frequency-stabilized power supply includes a first π-type filter module, a first energy storage boost module, a voltage doubling filter module, and an output linear voltage stabilization module which are sequentially connected along the transmission direction of the electrical signal; The first π-type filtering module is used to obtain a bus power signal, filter the switching noise in the bus power signal to form a first bus power signal, and send the first bus power signal to the first energy storage boost module; The first energy storage and boosting module is used to store and boost the first bus power supply signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a first conversion signal, and send the first conversion signal to the voltage doubling filter module; The voltage doubling filter module is used to receive the first conversion signal, perform voltage doubling and preliminary filtering on the first conversion signal to form a first voltage doubling filter signal, and transmit the first voltage doubling filter signal to the output linear voltage stabilization module; The output linear voltage stabilization module is used to receive the first voltage doubler filter signal, perform filtering and current limiting processing on the first voltage doubler filter signal, form a stable frequency-stabilized power supply signal, and transmit it to the frequency stabilization circuit for operation of the frequency stabilization circuit of the laser gyroscope.

2. The laser gyro power supply system according to claim 1, characterized in that: The frequency-stabilized power supply also includes a first linear voltage stabilization module connected to the power management chip on the first energy storage boost module. The first linear voltage regulator module is used to obtain a voltage signal from a bus power supply, step down and shape the voltage signal to form a first shaped voltage, and use the first shaped voltage as the operating voltage of the power management chip in the first energy storage boost module, so that the power management chip in the first energy storage boost module can work at maximum efficiency.

3. The laser gyro power supply system according to claim 2, characterized in that: The frequency-stabilized power supply further includes a first feedback module, the input end of the first feedback module is connected to the output end of the voltage-doubling filter module, and the output end of the first feedback module is connected to the input end of the first energy storage boost module; The first feedback module is used to perform closed-loop control on the frequency-stabilized power supply.

4. The laser gyro power supply system according to claim 1, characterized in that: The laser gyro power supply system also includes a jitter power supply system for the laser gyro, the jitter power supply includes a positive power supply generation system and a negative power supply generation system, the positive power supply generation system and the negative power supply generation system are both connected to the jitter circuit, and the positive power supply generation system is connected to the negative power supply generation system; The positive power generation system comprises a second π-type filter module, a second energy storage boost module and a second filter module which are sequentially connected along the transmission direction of the input power signal; The second π-type filtering module is used to obtain a bus power signal, filter the switching noise in the bus power signal to form a second bus power signal, and send the second bus power signal to the second energy storage boost module; A second energy storage and boosting module is used to store and boost the second bus power supply signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a second conversion signal, and send the second conversion signal to the second filtering module; The second filtering module is used to receive the second conversion signal, filter the second conversion signal, form a jitter power supply signal and send it to the jitter circuit for the operation of the jitter circuit.

5. The laser gyro power supply system according to claim 4, characterized in that: The positive power generation system further includes a second feedback module and a second linear voltage stabilization module connected to the power management chip on the second energy storage boost module; The second linear voltage regulator module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a second shaped voltage, and use the second shaped voltage as the working voltage of the power management chip in the second energy storage boost module, so that the power management chip in the second energy storage boost module can work at maximum efficiency; The input end of the second feedback module is connected to the output end of the second filtering module, and the output end of the second feedback module is connected to the input end of the second energy storage boost module; The second feedback module is used to perform closed-loop control on the positive power generation system.

6. The laser gyro power supply system according to claim 4, characterized in that: The negative power generation system comprises a third π-type filter module, a third energy storage boost module, a third filter module and a signal processing module which are sequentially connected along the transmission direction of the input power signal; The third π-type filtering module is used to obtain the bus power signal, filter the switching noise in the bus power signal to form a third bus power signal, and send the third bus power signal to the third energy storage boost module; The third energy storage and boosting module is used to store and boost the third bus power signal through the power management chip thereon to provide the energy and primary voltage required by the load, form a third conversion signal, and send the third conversion signal to the third filtering module; The third filtering module is used to receive the third conversion signal, filter the third conversion signal, form a jitter power signal and send it to the jitter circuit for the operation of the jitter circuit; The signal processing module is used to receive the third filtered signal, invert the third filtered signal into a positive voltage signal, and feed the positive voltage signal back to the third energy storage boost module of the positive power generation system.

7. The laser gyro power supply system according to claim 6, characterized in that: The negative power generation system further includes a third feedback module and a third linear voltage stabilization module connected to the power management chip on the third energy storage boost module; The third linear voltage stabilization module is used to obtain a voltage signal from the bus power supply, step down and shape the voltage signal to form a third shaped voltage, and use the third shaped voltage as the working voltage of the power management chip in the third energy storage boost module, so that the power management chip in the third energy storage boost module can work at maximum efficiency; The input end of the third feedback module is connected to the output end of the signal processing module, and the output end of the third feedback module is connected to the input end of the third energy storage boost module; The third feedback module is used to perform closed-loop control on the negative power generation system.

8. The laser gyro power supply system according to claim 7, characterized in that: The energy storage boosting circuit used by the first energy storage boosting module, the second energy storage boosting module and the third energy storage boosting module is the same, and the energy storage boosting circuit includes a power management chip, an inductor L2, a transistor Q1, a MOS tube Q2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a voltage regulator diode D1, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8; One end of the resistor R1 is connected to the emitter of the transistor Q1 and one end of the inductor L2; the other end of the resistor R1 is connected to the base of the transistor Q1 and one end of the voltage-stabilizing diode D1; the other end of the voltage-stabilizing diode D1 and one end of the capacitor C3 are grounded; the other end of the capacitor C3 is connected to the collector of the transistor Q1, the power management chip and one end of the capacitor C4; the other end of the capacitor C4 is grounded; the other end of the inductor L2 is connected to the drain of the MOS tube Q2; The gate of the MOS tube Q2 is connected to the power management chip through the resistor R2; the source of the MOS tube Q2 is connected to one end of the resistor R3 and one end of the resistor R4; the other end of the resistor R4 is grounded; the other end of the resistor R3 is connected to the power management chip and one end of the capacitor C5; the other end of the capacitor C5 is grounded; One end of the capacitor C6 is connected to the power management chip; the other end of the capacitor C6 is grounded; One end of the resistor R6 is connected to the power management chip; the other end of the resistor R6 is connected to both the power management chip and one end of the capacitor C7; the other end of the capacitor C7 is grounded; One end of the capacitor C8 is grounded; the other end of the capacitor C8 is connected to the power management chip; One end of the resistor R5 is connected to one end of the capacitor C7 and one end of the capacitor C8; the other end of the resistor R5 is connected to the power management chip; the other end of the capacitor C7 is connected to the other end of the capacitor C8.

9. The laser gyro power supply system according to claim 7, characterized in that: The output linear voltage stabilization module includes a resistor R16, a resistor R17, a resistor R18, a transistor Q3, a voltage stabilizing diode D7, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18 and a capacitor C19; Resistor R16 is connected to one end of capacitor C15, one end of capacitor C16, one end of resistor R17, one end of resistor R18 and the emitter of transistor Q3; the other end of capacitor C15 and the other end of capacitor C16 are both grounded; the other end of resistor R17 is connected to one end of capacitor C17, one end of voltage-stabilizing diode D7 and the base of transistor Q3; the other end of capacitor C17 and the other end of voltage-stabilizing diode D7 are both grounded; the other end of resistor R18 is connected to one end of capacitor C19; the collector of transistor Q3 is connected to one end of capacitor C18; the other end of capacitor C19 and the other end of capacitor C18 are both grounded.

10. The laser gyro power supply system according to claim 7, characterized in that: The signal processing module includes a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R19 and an interface; One end of the resistor R9 is connected to one end of the resistor R10; the other end of the resistor R10 is connected to both the interface and one end of the resistor R11; the other end of the resistor R11 is connected to both the interface and one end of the resistor R12; the other end of the resistor R12 is connected to both one end of the resistor R13 and the resistor R14; the other end of the resistor R13 is grounded; One end of the resistor R19 and the resistor R15 are both connected to the interface; the other end of the resistor R19 is grounded.

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