CN111623804B - Laser gyro test system and test method thereof - Google Patents
Laser gyro test system and test method thereof Download PDFInfo
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- CN111623804B CN111623804B CN202010703767.6A CN202010703767A CN111623804B CN 111623804 B CN111623804 B CN 111623804B CN 202010703767 A CN202010703767 A CN 202010703767A CN 111623804 B CN111623804 B CN 111623804B
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- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
The invention discloses a laser gyro testing system which is used for testing and calibrating a laser gyro and comprises three groups of testing positions, a common base unit, a shaking stability control unit, a high-voltage power supply unit and an amplifying unit, wherein the three groups of testing positions are respectively used for testing a gyro body, a gyro assembly and a gyroscope, the common base unit is used for testing the gyro body and the gyro assembly, the shaking stability control unit and the high-voltage power supply unit are used for testing the gyro body and the gyroscope, the base unit comprises an upper computer, a communication board, a power board and a collecting board, the upper computer is connected with the communication board through a communication interface, the communication board is also electrically connected with the collecting board, the shaking stability control unit and the power board, the amplifying unit is electrically connected with the collecting board through a switching control circuit, the switching control circuit is used for switching and inputting signals of the three groups of testing positions of the collecting board, and the shaking stability control unit is electrically connected with the power board. The whole system greatly reduces the manpower, material resources and complexity required by the test, improves the test precision and improves the test efficiency.
Description
Technical Field
The invention belongs to the field of instrument testing equipment and method and technology, and particularly relates to a laser gyro testing system and method.
Background
The development of gyroscopes has always influenced global navigation positioning systems and inertial navigation systems, which are common precise navigation devices for aviation platforms or precise guided weapons, so that self-laser gyroscopes have been developed, and have been used as core components of measurement and control systems for aircrafts, missiles, smart bombs, and the like. The efficiency of the laser gyro strap-down system is obviously improved after the laser gyro strap-down system is applied to a rocket system. In the past, due to the restriction of the operating speed of a rocket machine, the real-time speed and the position of the rocket can not be accurately calculated all the time, so that the workload of ground data processing is greatly increased, and the workload of design and subsequent orbit reporting is also increased. Therefore, the requirement of rapid track reporting can be met while the design is simplified.
None of the advantages mentioned above relate to the precision problem of the laser gyro, and the advantages of the laser gyro can be highlighted only if the precision of the laser gyro meets the design requirements. Therefore, the performance test of the laser gyro inertial navigation system is particularly important, and the research and development of the laser gyro combination test equipment are particularly important.
The two-frequency mechanically dithered laser gyroscope is one of the mainstream gyroscope inertial devices in the application of the current high-precision inertial navigation system, and the two-frequency mechanically dithered laser gyroscope mainly applied in the current market is of a 50 type, a 70 type and a 90 type. In the actual engineering application, according to the actual situation, the laser gyro body, the laser gyro component or the laser gyro needs to be calibrated and tested in the production link and the factory inspection and acceptance link. The existing test system does not detect the whole system of the laser gyroscope, needs manual cooperation for auxiliary detection, is low in test precision and high in test complexity, and needs a large amount of manpower and material resources.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method ensures that the laser gyroscope has accurate measurement data, is suitable for laser gyroscopes of different models and types, and protects the laser gyroscope test equipment.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a laser top test system for test and mark laser top, its characterized in that: including three groups of test positions, it is used for testing top body, top subassembly and gyroscope respectively, still includes a public basic unit, is used for top body and top subassembly tremble steady the control unit and high voltage supply unit, is used for the amplification unit of top body, basic unit includes host computer, communication board, power strip and gathers the board, the host computer passes through communication interface and links to each other with the communication board, the communication board still simultaneously with gather the board, tremble steady the control unit and power strip electric connection, amplification unit is through switching control circuit and gathering board electric connection, switching control circuit is used for switching the signal of three groups of test positions of input collection board, tremble steady the control unit and power strip electric connection.
As a further improvement of the above technical solution:
the host computer includes three at least groups of display module, display module includes model district, kind district, mode district, state display area. The model district is used for showing the model of product, its model includes laser gyroscope commonly used 50, 70 and 90 three kinds, the kind district includes laser gyroscope's three kinds of states, the laser gyro body, laser gyro subassembly and laser gyroscope, because current producer is the independent production, laser gyro production process mainly is above three kinds of states, there is different check out test set to different producers, it is especially important to provide one kind to be applicable to multistate laser gyroscope check out test set to total equipment factory and experiment, the mode district is used for showing and adopts piezoelectricity to examine tremble or electromagnetic examination trembles, the state district is used for showing operating current, high pressure time of starting luminance etc..
The acquisition board comprises a phase identification area, a counting area and a communication area. The phase detection area is used for converting sinusoidal signals generated by the product to be detected into TTL signals, the counting area is used for counting data generated by the product to be detected, and the communication area is used for outputting signals to the communication board and collecting and receiving signals of the laser gyro in a wireless mode.
The amplifying unit comprises a front amplifying circuit and a converting circuit. The data that the laser gyro body produced at the circular telegram in-process body can't directly be received by the acquisition board, need through preceding discharge circuit enlargies, the while carries out the conversion, turns into the signal that the acquisition board can receive.
The high-voltage power supply unit comprises a counter, a high-voltage generator and a cut-off controller. The counter adopts a timing counting control circuit with the MCU as a core. When the high-voltage generator is started, after the circuit is powered on, a jitter OK high-level signal is received, a counter is started to time, when the high-voltage OK signal is received, the time is stopped to time, and after the time is ended, the panel meter displays the time to be timed, wherein the time is the high-voltage starting time; when the gyro fails or the testing equipment fails to cause the gyro cannot be normally started, in order to protect the high-voltage circuit from always working in a starting state, the circuit is damaged, the upper timing limit is set to a preset value, and when the timing exceeds the preset time and the high-voltage OK signal cannot be received, the controller is cut off to cut off the high voltage, the high-voltage power supply is turned off, and the purpose of protecting the high-voltage circuit is achieved.
The switching control circuit comprises three states which are respectively as follows: an off state, a component on state, and a body on state. The cut-off state is a circuit non-conduction state and is used for testing the laser gyroscope, the assembly conduction state is used for testing the laser gyroscope assembly, and the body conduction state is used for testing the laser gyroscope body.
The jitter control unit comprises a piezoelectric jitter detection circuit, an electromagnetic jitter detection circuit and a gating control circuit. The gyro body and the gyro assembly do not contain a jitter control unit, so that jitter frequency cannot be provided, and the jitter control unit is additionally arranged outside the test system, so that the precision of the measurement result is improved.
The gating control circuit comprises three states which are respectively as follows: off state, piezoelectric on state, electromagnetic on state. The gyroscope body selects a piezoelectric conduction state, and works in a piezoelectric feedback closed-loop shaking environment. The gyro component selects an electromagnetic conduction state, and works in an electromagnetic feedback closed-loop shaking environment.
In order to realize the test of the gyroscopes in different states, the following technical scheme is provided: a test method based on a laser gyro test system comprises the following steps:
s1, placing a product to be detected into a detection position, and selecting the type and the type of the product to be detected on an upper computer, wherein the type is divided into three types, namely 50, 70 and 90, and the type is divided into three types, namely a gyroscope body, a gyroscope assembly and a gyroscope;
s2, the communication board starts the power panel to work through the input information of the upper computer:
if the gyroscope body is in the on state, the switching control circuit is selected to be in the on state, the gating control circuit is selected to be in the piezoelectric on state, the high-voltage generator is started to provide a working power supply for the gyroscope body, the output signal of the gyroscope body is amplified and switched by the preamplifier circuit and the conversion circuit to convert a sine signal into a TTL (transistor-transistor logic) signal, the TTL signal is sent to the acquisition board for data statistics, and the communication board outputs the data of the acquisition board to an upper computer for data processing and analysis;
if the gyroscope component is in the on state, the switching control circuit is selected to be in the component on state, the gating control circuit is selected to be in the electromagnetic on state, the high-voltage generator is started to provide a working power supply for the gyroscope component, a signal output by the gyroscope component is directly output to the TTL signal to the acquisition board through a self-contained amplification unit in the component to complete data acquisition, and the communication board outputs the acquired data to the upper computer for data processing and analysis;
if the gyroscope is used, the switching control circuit is selected to be in a cut-off state, the gating control circuit is selected to be in the cut-off state, the gyroscope outputs TTL signals to the acquisition board for data acquisition, meanwhile, the gyroscope directly transmits temperature signals to the communication board, and the communication board outputs the acquired data to the upper computer for data processing and analysis.
As a further improvement of the above technical solution:
the control system also comprises control of high-voltage starting time, when the high-voltage generator is started, the shaking and stabilizing control panel starts to work, the counter starts to time, when the shaking and stabilizing control unit works to reach a normal working state, the counter stops timing, the counted time is the normal high-voltage starting time, when the high-voltage generator works, if the shaking and stabilizing control unit still does not reach the normal working state due to overtime, the cut-off controller closes the high-voltage generator.
Compared with the prior art, the invention has the following beneficial effects:
the laser gyro test system of the invention adopts the combination of three groups of detection positions, can simultaneously detect the gyros in different states, and uses the automatic test technology controlled by the upper computer to obtain all required test quantities and greatly reduce the manpower, material resources and complexity required by the test, thereby reducing the influence of human errors in the previous test process, greatly improving the precision and reliability of the test and greatly reducing the time spent by the test. Different detection methods are used for different states through the switching control circuit and the gating control circuit, so that the detection precision is improved. The circuit has a counter and a cut-off controller which take an MCU as a core, monitors the high-voltage glow starting time, and cuts off the high voltage in time to protect a high-voltage circuit.
Drawings
FIG. 1 is a schematic diagram of an overall test system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions of the embodiments of the present invention can be combined, and the technical features of the embodiments can also be combined to form a new technical solution.
Example 1
As shown in fig. 1, the laser gyro testing system of the present embodiment is used for testing and calibrating a laser gyro, and is characterized in that: including three groups of test positions, it is used for testing top body, top subassembly and gyroscope respectively, still includes a public basic unit, is used for top body and top subassembly tremble steady the control unit and high voltage supply unit, is used for the amplification unit of top body, basic unit includes host computer, communication board, power strip and gathers the board, the host computer passes through communication interface and links to each other with the communication board, the communication board still simultaneously with gather the board, tremble steady the control unit and power strip electric connection, amplification unit is through switching control circuit and gathering board electric connection, switching control circuit is used for switching the signal of three groups of test positions of input collection board, tremble steady the control unit and power strip electric connection.
The host computer includes three at least display module groups, and display module includes model district, kind district, mode district, state display area.
The acquisition board comprises a phase identification area, a counting area and a communication area. The acquisition board is used for acquiring data and recording the data and outputting the data to the communication board in a serial port mode.
The amplifying unit comprises a front amplifying circuit and a converting circuit. The amplifying unit is only used for testing the gyroscope body, and the gyroscope body does not have a data conversion function, so that generated data cannot be collected by the collecting plate, and the amplifying unit is selected for conversion and amplification.
The high-voltage power supply unit comprises a counter, a high-voltage generator and a cut-off controller. The high-voltage power supply unit is used for supplying negative high-voltage power to the gyroscope body and the gyroscope assembly to enable the gyroscope body and the gyroscope assembly to work normally. The counter and the cut-off controller are used for monitoring the high-voltage glow starting time, and protecting the high-voltage circuit when the high-voltage glow starting time is too long.
The switching control circuit comprises three states, which are respectively: an off state, a component on state, and a body on state. When the gyroscope is in a cut-off state, signals of the gyroscope body and the gyroscope assembly cannot be output to the collecting plate, the collecting plate can only obtain detection signals of the gyroscope, when the gyroscope assembly is in a conducting state, signals of the gyroscope assembly are conducted, signals of the gyroscope and the gyroscope body are cut off and cannot be conducted, the collecting plate obtains detection signals of the gyroscope assembly, when the gyroscope assembly is in a conducting state, signals of the gyroscope assembly and the gyroscope are cut off, the collecting plate obtains detection signals of the gyroscope body, input signals of the collecting plate are selected and switched through the switching control circuit, and the multi-state gyroscope is detected.
The jitter control unit comprises a piezoelectric jitter detection circuit, an electromagnetic jitter detection circuit and a gating control circuit.
The gating control circuit comprises three states, namely: off state, piezoelectric on state, electromagnetic on state. The switching control circuit and the gating control circuit are used for switching detection modes among the gyroscope, the gyroscope assembly and the gyroscope body, the gyroscope body adopts a piezoelectric shake detection mode, and the gyroscope assembly adopts an electromagnetic shake detection mode.
The laser gyro test system has the advantages that three detection modes are reasonably designed, the application range is wide, the measured data is accurate, and meanwhile, the manpower, material resources and complexity required by the test are greatly reduced.
Example 2
The testing method based on the laser gyro testing system comprises the following steps:
s1, placing a product to be detected into a detection position, and selecting the type and the type of the product to be detected on an upper computer, wherein the type is divided into three types, namely 50, 70 and 90, and the type is divided into three types, namely a gyroscope body, a gyroscope assembly and a gyroscope; since products produced by manufacturers are different, various types exist, but the types mainly include a gyroscope body, a gyroscope assembly and a gyroscope.
S2, the communication board starts the power panel to work through the input information of the upper computer:
if the gyroscope body is in the on state, the switching control circuit is selected to be in the on state, the gating control circuit is selected to be in the piezoelectric on state, the high-voltage generator is started to provide a working power supply for the gyroscope body, the output signal of the gyroscope body is amplified and switched by the preamplifier circuit and the conversion circuit to convert a sine signal into a TTL (transistor-transistor logic) signal, the TTL signal is sent to the acquisition board for data statistics, and the communication board outputs the data of the acquisition board to an upper computer for data processing and analysis;
if the gyroscope component is in the on state, the switching control circuit is selected to be in the component on state, the gating control circuit is selected to be in the electromagnetic on state, the high-voltage generator is started to provide a working power supply for the gyroscope component, a signal output by the gyroscope component is directly output to the TTL signal to the acquisition board through a self-contained amplification unit in the component to complete data acquisition, and the communication board outputs the acquired data to the upper computer for data processing and analysis;
if the gyroscope is used, the switching control circuit is selected to be in a cut-off state, the gating control circuit is selected to be in the cut-off state, the gyroscope outputs TTL signals to the acquisition board for data acquisition, meanwhile, the gyroscope directly transmits temperature signals to the communication board, and the communication board outputs the acquired data to the upper computer for data processing and analysis.
The control system also comprises control of high-voltage starting time, when the high-voltage generator is started, the shaking and stabilizing control panel starts to work, the counter starts to time, when the shaking and stabilizing control unit works to reach a normal working state, the counter stops timing, the counted time is the normal high-voltage starting time, when the high-voltage generator works, if the shaking and stabilizing control unit still does not reach the normal working state due to overtime, the cut-off controller closes the high-voltage generator.
The laser gyro test system can monitor the high-voltage glow starting time through the test method, so that a high-voltage circuit of the whole system is effectively protected, and meanwhile, different types of products can be tested, so that the manpower, material resources and complexity required by the test are greatly reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a laser top test system for test and mark laser top, its characterized in that: including three groups of test positions, it is used for testing top body, top subassembly and gyroscope respectively, still includes a public basic unit, is used for top body and top subassembly tremble steady the control unit and high voltage supply unit, be used for the amplification unit of top body, basic unit includes host computer, communication board, power strip and gathers the board, the host computer passes through communication interface and links to each other with the communication board, the communication board still simultaneously with gather the board, tremble steady the control unit and power strip electric connection, amplification unit passes through switching control circuit and gathers board electric connection, switching control circuit is used for switching over the signal of three groups of test positions of input collection board, tremble steady the control unit and power strip electric connection, switching control circuit includes three kinds of states, is respectively: an off state, a component on state and a body on state; the jitter stability control unit comprises a piezoelectric jitter detection circuit, an electromagnetic jitter detection circuit and a gating control circuit; the gating control circuit comprises three states which are respectively as follows: an off state, a piezoelectric on state, an electromagnetic on state; if the gyroscope body is used, the switching control circuit is selected to be in a body conduction state, the gating control circuit is selected to be in a piezoelectric conduction state, if the gyroscope assembly is used, the switching control circuit is selected to be in an assembly conduction state, the gating control circuit is selected to be in an electromagnetic conduction state, if the gyroscope is used, the switching control circuit is selected to be in a cut-off state, and the gating control circuit is selected to be in a cut-off state.
2. The laser gyro testing system of claim 1, wherein: the host computer includes three at least groups of display module, display module includes model district, kind district, mode district, state display area.
3. The laser gyro testing system of claim 1, wherein: the acquisition board comprises a phase identification area, a counting area and a communication area.
4. The laser gyro testing system of claim 1, wherein: the amplifying unit comprises a front amplifying circuit and a converting circuit.
5. The laser gyro testing system of claim 1, wherein: the high-voltage power supply unit comprises a counter, a high-voltage generator and a cut-off controller.
6. A test method based on the laser gyro test system of claim 5, characterized by comprising the following steps:
s1, placing a product to be detected into a detection position, and selecting the type and the type of the product to be detected on an upper computer, wherein the type is divided into three types, namely 50, 70 and 90, and the type is divided into three types, namely a gyroscope body, a gyroscope assembly and a gyroscope;
s2, the communication board starts the power panel to work through the input information of the upper computer:
if the gyroscope body is in the on state, the switching control circuit is selected to be in the on state, the gating control circuit is selected to be in the piezoelectric on state, the high-voltage generator is started to provide a working power supply for the gyroscope body, the output signal of the gyroscope body is amplified and switched by the preamplifier circuit and the conversion circuit to convert a sine signal into a TTL (transistor-transistor logic) signal, the TTL signal is sent to the acquisition board for data statistics, and the communication board outputs the data of the acquisition board to an upper computer for data processing and analysis;
if the gyroscope component is in the on state, the switching control circuit is selected to be in the component on state, the gating control circuit is selected to be in the electromagnetic on state, the high-voltage generator is started to provide a working power supply for the gyroscope component, a signal output by the gyroscope component is directly output to the TTL signal to the acquisition board through a self-contained amplification unit in the component to complete data acquisition, and the communication board outputs the acquired data to the upper computer for data processing and analysis;
if the gyroscope is used, the switching control circuit is selected to be in a cut-off state, the gating control circuit is selected to be in the cut-off state, the gyroscope outputs TTL signals to the acquisition board for data acquisition, meanwhile, the gyroscope directly transmits temperature signals to the communication board, and the communication board outputs the acquired data to the upper computer for data processing and analysis.
7. The test method of claim 6, wherein: the control system also comprises control of high-voltage starting time, when the high-voltage generator is started, the shaking and stabilizing control panel starts to work, the counter starts to time, when the shaking and stabilizing control unit works to reach a normal working state, the counter stops timing, the counted time is the normal high-voltage starting time, when the high-voltage generator works, if the shaking and stabilizing control unit still does not reach the normal working state due to overtime, the cut-off controller closes the high-voltage generator.
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