Universal portable ground power distribution control system

Abstract

The invention provides a universal portable ground power distribution control system, and is suitable for the technical field of carrier rocket testing and launching. The system integrates a control display module, a power supply module, an instruction control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent device module. Through upper computer software, setting and remote control of distribution voltage, current and protection parameters are realized. The system provides various power supply voltages and a high-precision measurement function, supports analog and digital signal acquisition, and realizes generalization through a standard interface. The system is small in size, high in universality and high in integration level, can flexibly meet the test requirements of various types of carrier rocket electrical systems, and improves the test efficiency and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of launch vehicle testing and launching, and in particular to a universal portable ground power distribution control system. Background Art

[0002] As an important part of the launch vehicle test and launch equipment, the ground power distribution control system is mainly responsible for controlling the power supply and distribution of the launch vehicle's electrical system and monitoring the test status. During the ground test phase of the launch vehicle's electrical system, the power distribution control system needs to supply and disconnect the power to the rocket's electrical system in a specific power distribution sequence, and perform real-time detection of key parameters such as voltage, current, and resistance of the electrical system. In addition, the power distribution control system must also have the ability to send control instructions to the onboard electrical system to test the accuracy and effectiveness of state switching. At the same time, the power distribution control system must also have the ability to network and communicate with other test and launch equipment to achieve remote control and real-time data transmission, and improve the level of automation and intelligence of testing.

[0003] However, since the launch vehicle electrical system includes multiple subsystems such as control, measurement, and propellant utilization, the test power distribution requirements of each subsystem vary significantly, which results in the traditional ground power distribution control system often being customized according to the requirements of a single electrical subsystem and having a highly specialized characteristic. This specialized power distribution control system has problems such as long cycle, high cost, poor compatibility, and difficult maintenance during the research and development process, which seriously restricts the flexibility and efficiency of the launch vehicle electrical system test work.

[0004] With the continuous increase in the number of launch vehicle models, higher requirements are placed on the versatility, integration and flexibility of the power distribution control system. The traditional specialized power distribution control system can no longer meet the testing requirements of multiple models and multiple systems. Therefore, the development of a universal portable ground power distribution control system that can adapt to the power supply and distribution testing requirements of various electrical subsystems of various launch vehicles without changing the hardware has become a technical problem that needs to be solved urgently.

[0005] Therefore, it is necessary to propose a new technical solution to improve the above technical problems. Summary of the invention

[0006] In view of the defects in the prior art, an object of the present invention is to provide a universal portable ground power distribution control system.

[0007] A universal portable ground power distribution control system provided by the present invention comprises: a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module; The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, switching module, self-calibration module, network communication module and equivalent module are packaged together in a standard rack cabinet; The control display module sends control words via Ethernet to remotely control the command control module; the power supply module provides the required working voltage for the control display module, the command control module, the analog quantity acquisition module, the digital quantity acquisition module, the self-calibration module, the network communication module, and the equivalent module via the backplane; The instruction control module receives control instructions from the control display module and controls it through the PXI digital bus; the analog quantity acquisition module is connected to the control display module, receives its control instructions to collect analog signals, and transmits the collected data to the control display module; The digital quantity acquisition module is connected to the control and display module, receives its control instructions to collect digital signals, and transmits the collected data to the control and display module; the adapter module is connected to the equivalent device module, and the external interface of the system is brought out through the adapter interface; The self-calibration module exchanges data with the control and display module, receives its control instructions and returns the calibration results; the network communication module is connected to the control and display module; the equivalent module is connected to the adapter module; The analog quantity acquisition module integrates a fixed resistance voltage divider network circuit, an isolation operational amplifier circuit, a post-amplification conditioning circuit, and an analog-to-digital conversion circuit; Among them: the input end of the fixed resistance voltage divider network circuit is the voltage signal to be measured, the non-inverting input end and the inverting input end of the isolation operational amplifier circuit are connected to the output end of the voltage divider circuit, the output end is connected to the input end of the post-stage amplification and conditioning circuit, the output end of the post-stage amplification and conditioning circuit is connected to the input end of the analog-to-digital conversion circuit, the analog voltage signal is converted into a corresponding digital signal and then transmitted to the FPGA through the GPIO port, the 6-channel voltage signal is collected and processed, a 1mA constant current source is applied to the measured resistor, and the 2-channel resistor parameters are collected and processed by measuring the voltage across the resistor. The user configures the analog acquisition channel number and converts the coefficient through the host computer software; The digital quantity acquisition module uses optocoupler isolation technology to compatibly acquire 16 active and passive digital quantity signals, and is configured by jumper switching. The digital quantity acquisition module uses optocoupler isolation to acquire 8 active digital quantity signals and 8 passive digital quantity signals respectively. The user configures the digital quantity acquisition channel number through the host computer software; the digital quantity acquisition module is manually switched through jumpers, and a set of acquisition circuits is used to realize the separate acquisition of 8 active digital quantity signals and 8 passive digital quantity signals.

[0008] Preferably, the power module provides 28V, ±15V, 12V, 5V, and 3.3V power supplies, wherein the 28V output supports a maximum current of 10A. The power module is the power source for the entire system, converting 220V AC power into 2 28V, 2 ±15V, and 1 12V power supplies for external power supply, while providing 12V, 5V, and 3.3V power supplies to other functional modules through the backplane.

[0009] Preferably, the instruction control module supports receiving control words through the PXI digital bus, controls the sending of 16 uplink instruction signals, including 8 28V active instructions and 8 passive level instructions, and is provided with a sampling measurement circuit for status feedback. The user controls the sending of instructions by sending control words through the PXI digital bus.

[0010] Preferably, the control display module, power supply module, command control module, analog quantity acquisition module, digital quantity acquisition module, self-calibration module, and network communication module are all installed on the back panel and form a whole, and are installed in the cabinet with a 19-inch standard shelf-mounted design. The back panel is used to control the communication between the display mode and each functional module, and provide a power supply path for each functional module.

[0011] Preferably, the system has a built-in equivalent module, which can simulate the distributor and secondary power supply circuit on the launch vehicle. The equivalent module has a built-in equivalent circuit for simulating the circuit of the controlled product. The equivalent module is powered by a power module, controlled by a control and display module, and forms a whole with the adapter module, and is installed in a cabinet with a standard 19-inch shelf-mounted design.

[0012] Preferably, the self-calibration module uses high-precision voltage and resistance measurement technology to automatically calibrate and compensate the system's own voltage and resistance. The self-calibration module is used to perform high-precision measurements of the various voltages and resistances equipped in the system itself before the system is connected to the product, and compensate the test results.

[0013] Preferably, the system is equipped with host computer software, which performs seamless connection and comprehensive management between modules through a data bus, and performs user interaction, data processing and storage, interface display, remote command processing and customized power distribution strategy setting.

[0014] Preferably, the network communication module integrates 3 serial ports and 2 Ethernet interfaces, provides communication options, and supports remote command sending and receiving and real-time data transmission.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The universal portable ground power distribution control system of the present invention adopts a modular design, integrating multiple functional modules such as a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module. The system can adapt to the power supply and distribution test requirements of different models and different electrical systems through software configuration and interface switching without changing the hardware, greatly improving the versatility and flexibility of the system; 2. All functional modules of the present invention are integrated into a compact cabinet with an outer dimension of 620mm×450mm×650mm. The cabinet is equipped with 4 sets of universal wheels at the bottom, 4 sets of handles at the sides, and a set of retractable pull rods at the top, making the overall structure of the system compact and easy to move and carry. The internal interfaces all use DB series standard connectors and standard J599 connectors, which further reduces the external dimensions of the system and improves portability. 3. The system of the present invention has a rich data acquisition interface and command control interface, including an analog acquisition module and a digital acquisition module, which can respectively collect 8-way voltage and resistance parameters and 16-way digital signals. The command control module provides a 16-way uplink command signal transmission function, supports 28V active commands and passive level commands, so that the system can comprehensively and accurately monitor and control various parameters of the launch vehicle electrical system to meet complex testing requirements; 4. The system of the present invention has a built-in equivalent device module, which is used to simulate the circuit of the controlled product and to assess whether the power supply, control and acquisition functions of the system are qualified, thereby ensuring the safety and reliability of the system during the test, reducing the test risk and protecting the safety of the products on the launch vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 is a block diagram of a universal portable ground power distribution control system of the present invention; Figure 2 It is the overall structure diagram of a typical power module of the present invention; Figure 3 It is a schematic diagram of the structure of a universal portable ground power distribution control system of the present invention; Figure 4 It is a design principle diagram of the command control module of the universal portable ground power distribution control system of the present invention; Figure 5 This is a design principle diagram of a universal portable ground power distribution control analog quantity acquisition module of the present invention; Figure 6 This is a design principle diagram of a digital quantity acquisition module of a universal portable ground power distribution control system of the present invention; Figure 7 It is a schematic diagram of software function design of a universal portable ground power distribution control system of the present invention. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0018] Embodiment 1: A universal portable ground power distribution control system provided by the present invention comprises: a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module; the control display module, the power module, the command control module, the analog quantity acquisition module, the digital quantity acquisition module, the switching module, the self-calibration module, the network communication module and the equivalent module are packaged together in a standard rack-mounted cabinet; the control display module sends a control word through Ethernet to remotely control the command control module; the power module provides a control display module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a self-calibration module, a network communication module and an equivalent module through a backplane The command control module receives the control command from the control and display module and controls it through the PXI digital bus; the analog quantity acquisition module is connected to the control and display module, receives its control command to collect analog signals, and transmits the collected data to the control and display module; the digital quantity acquisition module is connected to the control and display module, receives its control command to collect digital signals, and transmits the collected data to the control and display module; the adapter module is connected to the equivalent module, and the external interface of the system is brought out through the adapter interface; the self-calibration module exchanges data with the control and display module, receives its control command and returns the calibration result; the network communication module is connected to the control and display module; the equivalent module is connected to the adapter module.

[0019] The power module provides 28V, ±15V, 12V, 5V, and 3.3V power supplies, among which the 28V output supports a maximum current of 10A. The power module is the power source for the entire system, converting 220V AC power into 2 28V, 2 ±15V, and 1 12V for external power supply, and at the same time providing 12V, 5V, and 3.3V power supplies to other functional modules through the backplane.

[0020] The command control module supports receiving control words through the PXI digital bus and controls the sending of 16 uplink command signals, including 8 28V active commands and 8 passive level commands. It is equipped with a feedback measurement circuit for status feedback. The user controls the sending of commands by sending control words through the PXI digital bus.

[0021] The analog quantity acquisition module integrates a fixed resistor voltage divider network circuit, an isolation amplifier circuit, a post-amplification and conditioning circuit, and an analog-to-digital conversion circuit, wherein: the input end of the fixed resistor voltage divider network circuit is the voltage signal to be measured, the non-inverting input end and the inverting input end of the isolation amplifier circuit are connected to the output end of the voltage divider circuit, and the output end is connected to the input end of the post-amplification and conditioning circuit, and the output end of the post-amplification and conditioning circuit is connected to the input end of the analog-to-digital conversion circuit. The analog voltage signal is converted into a corresponding digital signal and then transmitted to the FPGA through the GPIO port. The 6-channel voltage signal is collected and processed, a 1mA constant current source is applied to the measured resistor, and the 2-channel resistor parameters are collected and processed by measuring the voltage across the resistor. The user configures the analog quantity acquisition channel number and converts the coefficient through the host computer software.

[0022] The digital quantity acquisition module uses optocoupler isolation technology to compatibly acquire 16 active and passive digital quantity signals, and is configured by jumper switching. The digital quantity acquisition module adopts optocoupler isolation to acquire 8 active digital quantity signals and 8 passive digital quantity signals respectively. The user configures the digital quantity acquisition channel number through the host computer software; the digital quantity acquisition module is manually switched through jumpers, and a set of acquisition circuits is used to realize the separate acquisition of 8 active digital quantity signals and 8 passive digital quantity signals.

[0023] The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, self-calibration module, and network communication module are all installed on the backplane and form a whole, which is installed in the cabinet with a 19-inch standard rack-mounted design. The backplane is used to control the communication between the display mode and each functional module, and provide a power supply path for each functional module.

[0024] The system has a built-in equivalent module, which can simulate the distributor and secondary power supply circuit on the launch vehicle. The equivalent module has a built-in equivalent circuit for simulating the circuit of the controlled product. The equivalent module is powered by the power module, controlled by the control and display module, and forms a whole with the adapter module. It is installed in the cabinet with a standard 19-inch shelf-mounted design.

[0025] The self-calibration module uses high-precision voltage and resistance measurement technology to automatically calibrate and compensate the system's own voltage and resistance. The self-calibration module is used to perform high-precision measurements of the various voltages and resistances equipped in the system before the system is connected to the product, and compensate the test results.

[0026] The system is equipped with host computer software, which can seamlessly connect and comprehensively manage the modules through the data bus, and carry out user interaction, data processing and storage, interface display, remote command processing and customized power distribution strategy setting. The network communication module integrates 3 serial ports and 2 Ethernet interfaces, provides communication options, supports remote command sending and receiving and real-time data transmission.

[0027] Embodiment 2: The present invention aims to solve the problems of poor matching, low versatility and low integration of ground test equipment between different electrical systems of launch vehicles, and provides a universal portable ground power distribution control system. The universal portable ground power distribution control system can provide a variety of external interfaces and adapt to the power supply and distribution test requirements of various electrical subsystems of various types of launch vehicles without changing the hardware.

[0028] The present invention discloses a universal portable ground power distribution control system, which relates to the field of launch vehicle test and launch technology. The universal portable ground power distribution control system internally integrates a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module. The control display module is used to run the host computer software to realize the control, monitoring and management of other modules. The power module provides power for the system. The command control module provides the function of sending 16 uplink command signals. The analog quantity acquisition module includes 8 acquisition circuits for collecting analog signals. The digital quantity acquisition module includes 16 acquisition circuits for collecting digital signals. The switching module includes 4 groups of switching interfaces for external interface switching. The self-calibration module is used for high-precision voltage and resistance measurement. The network communication module provides 3 serial ports and 2 Ethernet communications. The equivalent module is used to assess the power supply, control and acquisition functions of the system. The universal portable ground power distribution control system of the present invention can realize programmable automatic power distribution and data acquisition of the electrical system on the launch vehicle, and has the advantages of small size, strong generalization and high degree of integration.

[0029] A universal portable ground power distribution control system comprises a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module; wherein: the control display module is used to run the upper computer software to realize functions such as user interaction, data processing and storage, interface display, and remote command processing, and at the same time communicates with each functional module through a data bus in hardware to realize control, monitoring and management of the internal modules of the system. According to the needs, users can set the basic parameters such as power distribution voltage (28V), current (0-10A), overvoltage / overcurrent protection, analog acquisition channel number (1-8), digital acquisition channel number (1-16) through the host computer software, and send control words through Ethernet to remotely control the command control module, and cooperate with other test equipment to complete the test process control; the power supply module, as the power supply source of the entire system, converts 220V AC power into 2 28V, 2 ±15V, and 1 12V for external power supply, and provides 12V, 5V, and 3.3V power supply to other functional modules through the backplane; the command control module provides 16-way uplink command signal sending function, which can be divided into 28V active commands (1-8 channels) and passive level commands (9-16 channels) according to different signal types. Users can send control words through the PXI digital bus to control the command sending; the analog acquisition module can send 6 The 8-way voltage and 2-way resistance parameters are collected, and the user configures the analog acquisition channel number and converts the coefficients through the host computer software; the digital acquisition module adopts optocoupler isolation to collect 8-way active digital signal and 8-way passive digital signal respectively, and the user configures the digital acquisition channel number through the host computer software; the adapter module provides 4 sets of adapter interfaces, which are used for data reception, command reception and transmission and power supply externally, and for equivalent module docking internally; the self-calibration module is used to perform high-precision measurement of the voltage and resistance of each channel equipped by the system before the system is connected to the product, and compensate the test results to ensure the accuracy requirements; the network communication module provides 3 serial ports and 2 Ethernet ports for external communication, remote command reception and transmission, etc.; the equivalent module has a built-in equivalent circuit to simulate the circuit of the controlled product, to assess whether the power supply, control, acquisition and other functions of the system are qualified, and to ensure the safety of the test.

[0030] The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, self-calibration module, and network communication module are all installed on the backplane and form a whole, which is installed in the cabinet with a 19-inch standard rack-mounted design. The backplane is used to realize the communication between the control display mode and each functional module, and provide a power supply path for each functional module.

[0031] The equivalent module is powered by the power module, controlled by the control display module, and integrated with the adapter module. It is installed in the cabinet with a 19-inch standard rack-mounted design. The power module can provide 28V, ±15V, 12V, 5V, and 3.3V power supply, and the maximum current of 28V output is 10A.

[0032] The analog quantity acquisition module consists of a fixed resistor voltage divider network circuit, an isolation amplifier circuit, a post-amplification and conditioning circuit, an analog-to-digital conversion circuit, a digital circuit, a constant current source, etc. It can collect and process 6-channel 0V~40V voltage signals and 2-channel 0~50℃ thermistor signals.

[0033] The digital quantity acquisition module is manually switched through jumpers, and a set of acquisition circuits is used to realize the acquisition of 8 active digital quantity signals and 8 passive digital quantity signals respectively. The adapter module can be connected with 4 sets of standard J599 type connectors. The external dimensions of the system cabinet are 620mm×450mm×650mm, with 4 sets of universal wheels at the bottom, 4 sets of handles on the sides, and a set of retractable pull rods on the top for easy movement and transportation.

[0034] A universal portable ground power distribution control system provided by the present invention comprises a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module.

[0035] A universal portable ground power distribution control system installation cabinet has an outer dimension of 620mm×450mm×650mm, equipped with 4 sets of universal wheels at the bottom, 4 sets of handles on the side, and a set of retractable pull rods on the top, which is easy to move and carry. The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, self-calibration module, and network communication module are all installed on the back panel. The back panel is used to realize the communication between the control display mode and each functional module, and provide a power supply path for each functional module. The above modules are installed in the cabinet as a whole with a 19-inch standard shelf design. The front of the panel is arranged with a manual button switch, an indicator light, an external interface, and a power button; the equivalent module is powered by the power module, controlled by the control display module, and is integrated with the adapter module and installed in the cabinet with a 19-inch standard shelf design.

[0036] The control and display module is used to run the host computer software to realize functions such as user interaction, data processing and storage, interface display, and remote command processing. At the same time, it communicates with various functional modules on the hardware through the data bus to realize the control, monitoring and management of the hardware.

[0037] The power module serves as the power source for the entire system. It supplies power to the control display module and other functional modules through the backplane, and provides 28V, ±15V, 12V, 5V, and 3.3V power supplies. Among them, 5V and 3.3V are mainly used to power internal digital chips such as ARM, FPGA, and FLASH. 28V, ±15V, and 12V are mainly used as command power supplies and to power external devices and equivalent modules.

[0038] The command control module is composed of FPGA, multiple relays, drive circuits, and sampling measurement. The control display module commands are received through the PXI bus, and 16 groups of 28V active commands and passive level commands can be controlled. The analog acquisition module is composed of FPGA, fixed resistor voltage divider network circuit, isolation amplifier circuit, post-stage amplification and conditioning circuit, analog-to-digital conversion circuit, digital circuit, constant current source, etc., and can collect and transmit 8 parameters. Among them, the 0~40V DC voltage signal is conditioned into a low-voltage DC signal, and then passes through a fixed-gain isolation amplifier circuit to achieve voltage isolation from the measured product. The DC voltage signal enters the post-stage signal conditioning circuit, is output after voltage conditioning, and is sent to the analog-to-digital conversion chip for analog-to-digital conversion. After sampling, the chip sends the digital quantity to the FPGA, and the FPGA sends the digital quantity after AD conversion to the control display module through the internal bus. The constant current source is output through the constant current source, and the temperature change causes the thermistor resistance value to change. The voltage across the thermistor is collected using a 4-wire connection method, and after analog-to-digital conversion, it is sent to the control display module through the internal bus.

[0039] The digital quantity acquisition module is composed of FPGA, optocoupler isolation circuit, measurement circuit, protection resistor, etc. It collects 16 active digital quantity signals and passive digital quantity signals respectively, and designs a universal circuit that can be manually switched through jumpers to achieve compatibility between active and passive digital quantity measurements. After receiving the digital quantity signal, the FPGA sends it to the control and display module through the internal bus.

[0040] The adapter module is composed of standard connectors, terminal blocks, etc. Its main function is to lead out the external interfaces of other modules described in this system. The internal wiring of the system adopts DB series standard connectors, and 4 sets of standard J599 connectors are provided externally for docking with the products on the launch vehicle.

[0041] The self-calibration module consists of a front-end signal conditioning circuit, an analog-to-digital conversion circuit, an ARM main control circuit, a power supply circuit, and a voltage reference circuit. For output voltage calibration, the steps are as follows: connect the output voltage terminal to the analog-to-digital conversion circuit, and connect the reference voltage to the same measurement circuit, compare the two sets of voltages, and use the calibration algorithm to adjust the output voltage so that the output voltage reaches high precision; for internal resistance calibration, the steps are as follows: connect a high-precision standard resistor, connect the internal resistance to be tested that needs to be calibrated with high precision to the circuit, and measure the deviation of the resistance to be tested through the voltage difference generated by the excitation current source at both ends of the resistance, and save the deviation value. Calibrate the measurement result through the calibration coefficient to ensure high-precision resistance value output. Ensure the safety of the output voltage and the accuracy of the measured resistance.

[0042] The network communication module is composed of Ethernet interface circuit, RS422 / RS485 serial interface circuit, drive circuit, etc. It provides 3 serial ports and 2 Ethernet communications for external communication and remote command transmission and reception. The equivalent module is used to simulate the distribution circuits and secondary power supply circuits on the launch vehicle. It can assess the power supply, control, collection and other functions of the power distribution system. The equivalent module is powered by the power module and receives commands from the control display module.

[0043] The external interface of the present invention adopts a standard interface, and the power distribution control requirements of different models and different electrical systems can be met through the internal conversion module, so as to realize the universal power supply and distribution of the electrical system of the launch vehicle; the internal interfaces of the present invention all adopt DB series standard connectors and standard J599 type connectors, which greatly reduces the external size of the system and is easy to carry; the present invention has its own equivalent module, which can fully verify the input and output functions of the system, ensure the normal operation of the equipment, and ensure the safety of the products on the launch vehicle; the data acquisition interface and command control interface provided by the present invention can be programmed and controlled by the host computer software, and can realize the power distribution test requirements of different models and different systems.

[0044] See also Figure 1 , is a block diagram of a universal portable ground power distribution control system provided by the present invention, consisting of Figure 1 It can be seen that the present invention provides a universal portable ground power distribution control system, including: a control display module, a power module, a command control module, an analog quantity acquisition module, a digital quantity acquisition module, a switching module, a self-calibration module, a network communication module and an equivalent module.

[0045] See also Figure 2, the overall structure diagram of the typical power module provided by the present invention, the typical application scenario is as follows: the power module input is 220V AC power, and provides 1 24V DC output and 1 28V DC output through the filter rectifier circuit and AC / DC power module. The first AC / DC module adopts the MPM-90-24 series power module of MEANWELL company, with a maximum output power of 90W, and the 24V DC output outputs DC 5V and 3.3V respectively through multiple DC-DC converters and DC voltage control circuits for internal power supply of the system. The second AC / DC module adopts the PFH500F series power module of TDK company, with a maximum output power of 504W, and the 28V DC output is divided into 3 channels, one of which is directly powered by the filter circuit and control circuit, one of which is output through the MPM1220SJ series DC / DC converter and DC voltage control circuit. The maximum output current is 2A, and the other is output through the TPS54630 buck converter and the positive and negative voltage conversion circuit. ±15V, the maximum output current is 3A.

[0046] See also Figure 3 , is a schematic diagram of the structure of a universal portable ground power distribution control system provided by the present invention. Figure 2 It can be seen that the universal portable ground power distribution control system installation cabinet provided by the present invention has an outer dimension of 620mm×450mm×650mm, is equipped with 4 sets of universal wheels at the bottom, 4 sets of handles on the sides, and a set of retractable pull rods on the top.

[0047] See also Figure 4 , is a design schematic diagram of a universal portable ground power distribution control system command control module provided by the present invention. Figure 4 It can be seen that the command control module is composed of FPGA, multiple groups of relays, drive circuits, recovery measurement circuits, etc. The signal type output by FPGA is LVCMOS, and the signal of the relay module drive circuit is generally a TTL level signal. The relay is usually driven by a Darlington tube circuit. The relay includes two groups of contact switches, one for relay status feedback and one for signal transmission. The control display module commands are received through the PXI digital bus, and 16 groups of 28V active commands and passive level commands can be controlled. The 28V active command is defined as providing a 28V current signal to the arrow product, and the passive level command is defined as providing a signal path to the arrow product.

[0048] See also Figure 5 , is a design principle diagram of a universal portable ground power distribution control analog quantity acquisition module provided by the present invention. Figure 5It can be seen that the analog quantity acquisition module is composed of FPGA, fixed resistor voltage divider network circuit, isolation amplifier circuit, post-stage amplification and conditioning circuit, ADS7953 analog-to-digital conversion circuit, digital circuit, constant current source, etc., and can collect and transmit 8 parameters. Among them, the 0~40V DC voltage signal is conditioned to 0~2V, and then passes through the fixed gain isolation amplifier circuit to achieve voltage isolation from the product under test. The 0~2V DC voltage enters the post-stage signal conditioning circuit, and the conditioned voltage output is 0~4V, which is sent to the ADS7953 analog-to-digital conversion chip for analog-to-digital conversion. After sampling, the ADS7953 sends the digital quantity to the FPGA, and the FPGA sends the digital quantity after AD conversion to the control display module through the internal bus. 1mA constant current is output through the constant current source, and the temperature change causes the thermistor resistance value to change. The voltage across the thermistor is collected by a 4-wire connection method, and after analog-to-digital conversion, it is sent to the control display module through the internal bus.

[0049] See also Figure 6 , is a design principle diagram of a digital quantity acquisition module for a universal portable ground power distribution control system provided by the present invention. Figure 6 It can be seen that the digital quantity acquisition module is composed of FPGA, optocoupler isolation circuit, measurement circuit, protection resistor, etc., which collects 16 active digital quantity signals and passive digital quantity signals respectively, and designs a universal circuit that can be manually switched through jumpers. When the jumper is at the AB and CD ends, active digital quantity measurement is performed, and when the jumper is at the CD end, passive digital quantity measurement is performed. After receiving the digital quantity signal, the FPGA sends it to the control display module through the internal bus.

[0050] See also Figure 7 , is a general portable ground power distribution control system software functional design schematic diagram provided by the present invention. Figure 7 It can be seen that the software functions of the general portable ground power distribution control system include four types: system status configuration, test task configuration, self-calibration configuration and equivalent device test configuration. The system status configuration is mainly the system underlying driver configuration; the test task configuration includes test items, test parameters, test status, process configuration, as well as test process execution, result statistics query, report generation function, etc.; the self-calibration configuration includes calibration parameter setting, process setting and calibration result query, and imports the results into the database after the self-calibration is completed; the equivalent device test configuration includes equivalent device test parameter configuration, process configuration and execution, and query and statistics the results after the equivalent device test is completed.

[0051] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0052] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0053] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A universal portable ground power distribution control system, characterized in that: include: Control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, switching module, self-calibration module, network communication module and equivalent module; The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, switching module, self-calibration module, network communication module and equivalent module are packaged together in a standard rack cabinet; The control display module sends control words via Ethernet to remotely control the command control module; the power supply module provides the required working voltage for the control display module, the command control module, the analog quantity acquisition module, the digital quantity acquisition module, the self-calibration module, the network communication module, and the equivalent module via the backplane; The instruction control module receives control instructions from the control display module and controls it through the PXI digital bus; the analog quantity acquisition module is connected to the control display module, receives its control instructions to collect analog signals, and transmits the collected data to the control display module; The digital quantity acquisition module is connected to the control and display module, receives its control instructions to collect digital signals, and transmits the collected data to the control and display module; the adapter module is connected to the equivalent module, and the external interface of the system is brought out through the adapter interface; The self-calibration module exchanges data with the control and display module, receives its control instructions and returns the calibration results; the network communication module is connected to the control and display module; the equivalent module is connected to the adapter module; The analog quantity acquisition module integrates a fixed resistance voltage divider network circuit, an isolation operational amplifier circuit, a post-amplification conditioning circuit, and an analog-to-digital conversion circuit; Among them: the input end of the fixed resistance voltage divider network circuit is the voltage signal to be measured, the non-inverting input end and the inverting input end of the isolation operational amplifier circuit are connected to the output end of the voltage divider circuit, the output end is connected to the input end of the post-stage amplification and conditioning circuit, the output end of the post-stage amplification and conditioning circuit is connected to the input end of the analog-to-digital conversion circuit, the analog voltage signal is converted into a corresponding digital signal and then transmitted to the FPGA through the GPIO port, the 6-channel voltage signal is collected and processed, a 1mA constant current source is applied to the measured resistor, and the 2-channel resistor parameters are collected and processed by measuring the voltage across the resistor. The user configures the analog acquisition channel number and converts the coefficient through the host computer software; The digital quantity acquisition module uses optocoupler isolation technology to compatibly acquire 16 active and passive digital quantity signals, and is configured by jumper switching. The digital quantity acquisition module uses optocoupler isolation to acquire 8 active digital quantity signals and 8 passive digital quantity signals respectively. The user configures the digital quantity acquisition channel number through the host computer software; the digital quantity acquisition module is manually switched through jumpers, and a set of acquisition circuits is used to realize the separate acquisition of 8 active digital quantity signals and 8 passive digital quantity signals.

2. The universal portable ground power distribution control system according to claim 1, characterized in that: The power module provides 28V, ±15V, 12V, 5V, and 3.3V power supplies, among which the 28V output supports a maximum current of 10A. The power module is the power source for the entire system, converting 220V AC power into 2 28V, 2 ±15V, and 1 12V power supplies for external power supply, and at the same time providing 12V, 5V, and 3.3V power supplies to other functional modules through the backplane.

3. The universal portable ground power distribution control system according to claim 1, characterized in that: The command control module supports receiving control words through the PXI digital bus, controls the sending of 16 uplink command signals, including 8 28V active commands and 8 passive level commands, and is provided with a sampling measurement circuit for status feedback. The user controls the sending of commands by sending control words through the PXI digital bus.

4. The universal portable ground power distribution control system according to claim 1, characterized in that: The control display module, power module, command control module, analog quantity acquisition module, digital quantity acquisition module, self-calibration module, and network communication module are all installed on the back panel and form a whole, and are installed in the cabinet with a 19-inch standard shelf-mounted design. The back panel is used to control the communication between the display mode and each functional module, and provide a power supply path for each functional module.

5. The universal portable ground power distribution control system according to claim 1, characterized in that: The system has a built-in equivalent module, which can simulate the distributor and secondary power supply circuit on the launch vehicle. The equivalent module has a built-in equivalent circuit for simulating the circuit of the controlled product. The equivalent module is powered by a power module, controlled by a control and display module, and forms a whole with the adapter module. It is installed in a cabinet with a standard 19-inch shelf-mounted design.

6. The universal portable ground power distribution control system according to claim 1, characterized in that: The self-calibration module uses high-precision voltage and resistance measurement technology to automatically calibrate and compensate the system's own voltage and resistance. The self-calibration module is used to perform high-precision measurements of the various voltages and resistances equipped in the system before the system is connected to the product, and compensate the test results.

7. The universal portable ground power distribution control system according to claim 1, characterized in that: The system is equipped with host computer software, which seamlessly connects and comprehensively manages the modules through the data bus, and performs user interaction, data processing and storage, interface display, remote command processing and customized power distribution strategy setting.

8. The universal portable ground power distribution control system according to claim 1, characterized in that: The network communication module integrates 3 serial ports and 2 Ethernet interfaces, provides communication options, and supports remote command sending and receiving and real-time data transmission.

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