CN113917876A - Analog signal source device - Google Patents
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- CN113917876A CN113917876A CN202111218115.4A CN202111218115A CN113917876A CN 113917876 A CN113917876 A CN 113917876A CN 202111218115 A CN202111218115 A CN 202111218115A CN 113917876 A CN113917876 A CN 113917876A
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- 238000006243 chemical reaction Methods 0.000 claims description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
The application discloses analog signal source device relates to analog signal source technical field for solve the technical problem that analog signal type is single among the prior art, produces interference each other. The device comprises a main control box, a display, a regulating box and a power box; the display and the conditioning box are both connected with the main control box; the power supply box is connected with the adjusting box; the main control box and the conditioning box are in communication connection with the power parameter acquisition and display system; the main control box is used for providing needed basic resources for the interior and realizing the functional requirements of the equipment; the display provides display and computer input equipment for the device; the conditioning box is used for conditioning signals and providing a detection interface and an output control and interface; the power box is used for providing a secondary power supply required by the device. The embodiment of the invention realizes that 83 circuits of analog quantity signal input of the on-board power grid parameters is provided for the power parameter acquisition and display system, and is used for acceptance and test of products and field fault elimination.
Description
Technical Field
The application relates to the technical field of analog signal sources, in particular to an analog signal source device.
Background
An analog signal is a signal represented by a continuously changing physical quantity, and the amplitude, frequency, or phase of the signal changes continuously with time, or within a continuous time interval, the characteristic quantity representing the information can be represented as a signal with any value at any moment.
The analog signal source is an important component of a modern electronic test system, and the analog signals generated by the existing analog signal source have the technical problems of single signal type and mutual interference.
Disclosure of Invention
The embodiment of the application solves the technical problems of single analog signal type and mutual interference in the prior art by providing the analog signal source device, realizes the supply of 83 analog quantity signal inputs of the on-board power grid parameters for the power parameter acquisition and display system, and is used for acceptance, test and field fault elimination of products.
The embodiment of the invention provides an analog signal source device, which comprises a main control box, a display, a regulating box and a power box, wherein the main control box is connected with the display; the display and the adjusting box are both connected with the main control box; the power supply box is connected with the adjusting box; the main control box and the adjusting box are in communication connection with a power parameter acquisition and display system; the main control box is used for providing needed basic resources for the interior and realizing the functional requirements of the equipment; the display provides display and computer input equipment for the device; the conditioning box is used for conditioning signals and providing a detection interface and an output control and interface; the power box is used for providing a secondary power supply required by the device.
In one possible implementation, the master control box includes a master control board, a waveform generator card, a DA card, a discrete quantity card, and a serial port card; the main control board is used for collecting data, operating and outputting instruction instructions; the waveform generator card is used for generating the waveform of the alternating current signal and adjusting the frequency; the DA card is used for converting analog signals; the discrete quantity card is used for realizing a DIO function; the serial port card is used for serial port communication.
In one possible implementation, the display includes an LED display screen, an ultra-thin keyboard, and a mouse touch pad; the LED display screen, the ultrathin keyboard and the mouse touch pad are used for man-machine interaction.
In one possible implementation, the number of the reconciliation boxes comprises 2; the conditioning box is used for conditioning and driving, controlling output and protection and providing a detection and output interface.
In one possible implementation, the conditioning box comprises an alternating voltage module, a direct voltage module, an alternating current module, a direct current module and a relay card; the alternating current voltage module, the direct current voltage module, the alternating current module and the direct current module are connected with the relay card.
In one possible implementation, the conditioning box further comprises a chain breaking block; the chain breaking block is connected between the relay card and the output plug of the adjusting box and used for detecting and metering output signals.
In one possible implementation, the power box includes a 24V power supply and a 160V power supply. One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention adopts the main control box to provide basic resources and control for equipment, and the regulating box drives and regulates various signals and outputs the signals to the power parameter acquisition and display system, thereby effectively solving the technical problem of single analog signal type in the prior art, further realizing the provision of analog quantity signal input of 83-channel onboard power grid parameters for the power parameter acquisition and display system, and being used for acceptance, test and outfield troubleshooting of products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic system structure diagram of an analog signal source device according to an embodiment of the present disclosure;
fig. 2 is a front view of an analog signal source device according to an embodiment of the present application;
fig. 3 is a back view of an analog signal source device according to an embodiment of the present application.
Reference numerals: 1-a main control box; 2-a display; 3-adjusting the box; 4-a power box; 11-a main control board; 12-a waveform generator card; 13-DA card; 14-discrete quantity card; 15-serial port card; 21-LED display screen; 22-ultra-thin keyboard; 23-mouse touchpad; 31-an alternating voltage module; 32-a direct current voltage module; 33-alternating current module; 34-a direct current module; 35-relay card; 36-chain breaking block.
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 some, not all, embodiments of the present invention. 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.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
The present embodiment provides an analog signal source device, please refer to fig. 1 to 3 in the drawings of the specification.
Referring to fig. 1, an analog signal source device includes a main control box 1, a display 2, a conditioning box 3 and a power box 4; the display 2 and the adjusting box 3 are both connected with the main control box 1; the power box 4 is connected with the adjusting box 3; the main control box 1 and the adjusting box 3 are in communication connection with a power parameter acquisition and display system. The main control box 1 is communicated with the power parameter acquisition and display system through an RS485 or RS422 bus.
The main control box 1 is used for providing required basic resources for the interior and realizing the functional requirements of the equipment. The display 2 provides a display and computer input means for the apparatus; the conditioning box 3 is used for conditioning signals and providing a detection interface and an output control and interface; the power box 4 is used for providing secondary power required by the device.
The embodiment of the invention adopts the main control box 1 to provide basic resources and control for equipment, and the conditioning box 3 drives and conditions various signals and outputs the signals to the power parameter acquisition and display system, thereby effectively solving the technical problem of single analog signal type in the prior art, further realizing the provision of analog quantity signal input of 83-channel onboard power grid parameters for the power parameter acquisition and display system, and being used for acceptance, test and outfield troubleshooting of products. Meets the requirements of 'general standard of test bed for aeronautical electrical and electronic equipment'.
Referring to fig. 2 and 3, the analog signal source device is convenient and movable in appearance, and meets the requirements of the equipment on working temperature of-15-40 ℃, humidity of 20-90% and storage condition of-10-50 ℃. Meanwhile, the requirement of expansibility is considered, and a 24U standard cabinet is adopted. The standard cabinet is low in cost, and an integrated structure is movable without disassembling and assembling a connecting line. In order to facilitate the movement, a reliable universal wheel and a locking device can be arranged at the bottom of the universal wheel.
The master control box 1 includes a master control board 11, a waveform generator card 12, a DA card 13, a discrete quantity card 14, and a serial port card 15. The case of the main control case 1 adopts CHR81001, is a general 14-slot CPCI/PXI case, is compatible with CompactPCI modules, and conforms to the CPCI/PXI standard. The chassis provides 1 system slot and 13 CPCI/PXI peripheral card slots, the maximum system slot width is 3, the maximum system broadband is 132MB/S, the chassis installation is supported, and most of test measurement application can be met.
The main control board 11 is used for collecting data, calculating and outputting instruction instructions. The master control board 11 adopts the Linghua CPCI-3970Dm, i7 DDR16G standard shelf product which is mature and reliable.
The waveform generator card 12 is used to generate the waveform of the ac signal and adjust the frequency. The waveform generator card 12 has 8 parallel DA channels; the resolution is 16 bit; the maximum update rate can reach 1 MHZ; the maximum output range is +/-10V; can realize the generation of various waveforms and is internally provided with a high-speed clock. Meeting the requirements of the system.
The DA card 13 is used for analog signal conversion. The DA card 13 is a data acquisition module based on CPCI/PCI bus design. The module has 32 single-end/16 differential analog quantity outputs; the module resolution is 16 bit; the maximum output range is +/-10V, and the system precision can reach 0.03% FSR. The module has stable performance and high reliability, and can be used in various test fields.
The discrete quantity card 14 is used for realizing a DIO function, supports 96-channel TTL level bidirectional digital quantity input/output, and the input/output direction can be set through software programming.
The serial port card 15 is used for serial communication and is an 8-path isolation type RS232/422/485 intelligent communication module, each path of receiving FIFO is 4MByte, and each path of transmitting FIFO is (8K-1) Byte; the module baud rate can be programmed and set automatically, the maximum rate can reach 2Mbps, and the transmission rate is high; the RS232 baud rate is 2400-115.2kbps, and the RS422/485 baud rate is 2400-2 Mbps; the stop bit and the check bit can be set in a programming way; the module can program the RS232/422/485 interface mode.
The display 2 comprises an LED display screen 21, an ultrathin keyboard 22 and a mouse touch panel 23; the LED display screen 21, the ultra-thin keyboard 22 and the mouse touch panel 23 are used for human-computer interaction.
The LED display screen 21, the ultrathin keyboard 22 and the mouse touch pad 23 are integrated together, and a drawer type installation mode is adopted, so that the problem of insufficient space is thoroughly solved. Compared with a standard keyboard, a display screen and a mouse, 85% of space can be saved. The high-quality A-grade 17' TFT LED display screen is adopted, and the resolution can reach 280x1024@75Hz at most. Supporting a variety of hardware platforms and a variety of operating systems.
The conditioning box 3 comprises 2, and the conditioning box 3 is used for conditioning and driving: the basic signals of the main control box 1 are converted into the final required signals through conditioning and driving.
Controlling output and protection: the signals are classified according to the types and characteristics of the signals, and the output control of the no-path signals is performed through the relay card 35. While providing protection in terms of isolation and the like.
Providing a detection and output interface: all the signals are output through the conditioning box 3, and all the signals pass through the chain breaking block, so that the detection and the measurement are facilitated.
The working logic of the regulating box 3 is as follows: required signals are output to the conditioning box 3 through the DA card 13 of the main control box 1, the signals are conditioned into signals required by the system through the conditioning and driving module, the signals pass through the relay card 35, the output control of the signals is achieved, and the signals are output to the power parameter acquisition system through the connector.
The signals conditioned and converted by the conditioning box 3 include an alternating voltage signal, a direct voltage signal, an alternating current signal and a direct current signal.
The adjusting box 3 comprises an alternating voltage module 31, a direct voltage module 32, an alternating current module 33, a direct current module 34 and a relay card 35; the ac voltage module 31, the dc voltage module 32, the ac current module 33, and the dc current module 34 are all connected to the relay card 35.
Each signal is in modular design and is designed in a plug-in structure. Is convenient for expansion and maintenance. And each path of signal is output through the relay card 35, so that the purpose of independent control can be realized. While avoiding unnecessary interference.
The conditioning box 3 further comprises a chain breaking block 36; the chain breaking block 36 is connected between the relay card 35 and the output plug of the conditioning box 3 and is used for detecting and metering output signals. The chain breaking block 36 is provided on the front panel of the conditioning case 3, and the upper portion of the rear panel of the conditioning case 3 is an 84TE space. The lower part of the standard board card which can be inserted by 100 x 160 is used as a connector output. The connector is designed to prevent wrong insertion, and an interface is reserved for later expansion and use. Each connector is classified according to signal characteristics and is subjected to misplug prevention processing.
The ac voltage module 31, the dc voltage module 32, the ac current module 33 and the dc current module 34 are used for the generation of the corresponding signals.
The ac voltage module 31 mainly completes the output of 26 ac voltage signals.
The generation of alternating voltage is to generate a sine wave signal with adjustable frequency and adjustable amplitude through the dynamic DA card 13, and then to finish the voltage boosting through the isolation high-voltage power supply and the high-voltage operational amplifier after the isolation is performed through the isolation operational amplifier.
The resolution of the dynamic DA card 13 is 16 bits, and the requirement of the resolution can be met. Meanwhile, the maximum update rate can reach 1 MHZ; and a high speed clock 40MHZ is built in. In the frequency range where a maximum of 500Hz is required, there can be sufficient output points per waveform period, and therefore under the condition of error ± 0.5Hz for a sine wave resolution of 0.1 Hz. Meets the requirement of distortion degree less than or equal to 1 percent. And calculating that the power required by each path of signal is not more than 4.5W, and selecting a 10W isolation DC-DC power supply module by considering margin design. In the embodiment, a 120V power supply is selected and output in a differential mode, so that the requirement of 0-150V is met. After the output of the isolation operational amplifier is carried out, a DC-DC isolation power supply is selected in a high-voltage part, and the isolation power supply is used for outputting the high-voltage operational amplifier PA79 in a differential mode.
The dc voltage module 32 mainly completes the output of 10 paths of 0-70V dc voltage signals and 12 paths of 0-40V dc voltage signals.
The direct current voltage is generated by generating an analog quantity signal through the DA card 13, isolating through the isolation operational amplifier, and then completing voltage boosting through the isolation power supply and the high-voltage operational amplifier.
The DA card 13 has the resolution of 16 bits, and can meet the requirement of the resolution. After the output of the isolation operational amplifier is carried out, a DC-DC isolation power supply is selected in a high-voltage part, and isolation power is supplied to the high-voltage operational amplifier PA79 for amplification. And calculating that the power required by each path of signal is not more than 2.1W, and selecting a 5W isolation DC-DC power supply module by considering margin design.
The direct-current voltage module 32 has the advantages of simple structure, higher maturity, low failure rate and convenience for later maintenance.
The alternating current module 33 mainly completes the output of 15 paths of 0-140mA alternating current signals and 5 paths of 0-20mA alternating current signals.
The alternating current is generated by generating a signal meeting the frequency requirement and then realizing the driving amplification of the signal through the isolation power supply and the isolation operational amplifier VI circuit.
The resolution of the dynamic DA card 13 is 16 bits, and the requirement of the resolution can be met. Meanwhile, the maximum update rate can reach 1 MHZ; and a high speed clock 40MHZ is built in. In the frequency range where a maximum of 500Hz is required, there can be sufficient output points per waveform period, and therefore under the condition of error ± 0.5Hz for a sine wave resolution of 0.1 Hz. Meets the requirement of distortion degree less than or equal to 1 percent. The load is connected between COM and the output. In the embodiment, the isolation power supply is 3W, which can satisfy the load carrying capability of 7V.
The direct current module 34 mainly outputs 10-25-250 mA direct current signals and 5-20-260 mA direct current signals.
The direct current is generated by generating an analog quantity signal through the DA card 13 and realizing signal driving amplification through the isolation power supply and the isolation operational amplifier VI circuit.
The DA card 13 has the resolution of 16 bits, and can meet the requirement of the resolution. In the embodiment, the isolation power supply is 3W, which can satisfy the load carrying capability of 7V.
The current signal of each path is internally output by an independent ground wire, the ground wires of the current signals are isolated from each other, and the current signals are output by two wires, have the common-ground capability and can be common-grounded without influencing the output according to requirements; the voltage signal of each path is internally output by an independent ground wire, the voltage signal ground wires are mutually isolated, and the voltage signal ground wires are output by two wires, have the common-ground capability and can be common-grounded as required without influencing the output.
The power box 4 includes a 24V power supply and a 160V power supply. The output of the power box 4 is safe and convenient to detect through a safety and a measuring hole.
The analog signal source device is provided with matched developed software, and the software is developed by Labview. The software supports operating systems above Windows XP and Windows7, adopts modular design, has independent functions and runs stably. And according to the functional requirements, the software is set to be started up automatically. And after the software is started, self-checking is carried out, and a ready code is returned after the self-checking is finished. The software defaults to the programmed mode. And after the software receives the instruction of the upper computer, executing operation according to the instruction content.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (7)
1. An analog signal source device is characterized by comprising a main control box (1), a display (2), a conditioning box (3) and a power supply box (4);
the display (2) and the adjusting box (3) are both connected with the main control box (1);
the power supply box (4) is connected to the adjusting box (3);
the main control box (1) and the adjusting box (3) are in communication connection with a power parameter acquisition and display system;
the main control box (1) is used for providing needed basic resources internally and realizing the functional requirements of equipment;
the display (2) provides display and computer input equipment for the device;
the conditioning box (3) is used for conditioning signals and providing a detection interface and an output control and interface;
the power box (4) is used for providing a secondary power supply required by the device.
2. Analog signal source device according to claim 1, characterized in that the master control box (1) comprises a master control board (11), a waveform generator card (12), a DA card (13), a discrete quantity card (14) and a serial port card (15);
the main control board (11) is used for collecting data, operating and outputting instruction instructions;
the waveform generator card (12) is used for generating the waveform of the alternating current signal and adjusting the frequency;
the DA card (13) is used for analog signal conversion;
the discrete quantity card (14) is used for realizing a DIO function;
the serial port card (15) is used for serial communication.
3. An analog signal source device as claimed in claim 1, characterized in that the display (2) comprises an LED display screen (21), an ultra-thin keyboard (22) and a mouse touch pad (23);
the LED display screen (21), the ultrathin keyboard (22) and the mouse touch pad (23) are used for man-machine interaction.
4. Analog signal source device according to claim 1, characterized in that the conditioning cabinet (3) comprises 2;
the conditioning box (3) is used for conditioning and driving, controlling output and protection and providing a detection and output interface.
5. Analog signal source device according to claim 4, characterized in that the conditioning box (3) comprises an alternating voltage module (31), a direct voltage module (32), an alternating current module (33), a direct current module (34) and a relay card (35);
the alternating voltage module (31), the direct voltage module (32), the alternating current module (33) and the direct current module (34) are all connected with the relay card (35).
6. Analog signal source device according to claim 5, characterized in that the conditioning box (3) further comprises a chain breaking block (36);
the chain breaking block (36) is connected between the relay card (35) and an output plug of the conditioning box (3) and used for detecting and metering output signals.
7. Analog signal source device according to claim 1, characterized in that the power supply box (4) comprises a 24V power supply and a 160V power supply.
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| CN202111218115.4A CN113917876A (en) | 2021-10-20 | 2021-10-20 | Analog signal source device |
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| CN202111218115.4A CN113917876A (en) | 2021-10-20 | 2021-10-20 | Analog signal source device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521091A (en) * | 2011-12-05 | 2012-06-27 | 株洲南车时代电气股份有限公司 | Test device for train control safety computer |
| CN204731633U (en) * | 2015-04-23 | 2015-10-28 | 北京广利核系统工程有限公司 | A kind of signal imitation generating means of DCS system physical quantity variation rate test |
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| CN113086241A (en) * | 2021-03-23 | 2021-07-09 | 珠海欧比特宇航科技股份有限公司 | Airborne flight parameter simulation device and system |
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2021
- 2021-10-20 CN CN202111218115.4A patent/CN113917876A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521091A (en) * | 2011-12-05 | 2012-06-27 | 株洲南车时代电气股份有限公司 | Test device for train control safety computer |
| CN204731633U (en) * | 2015-04-23 | 2015-10-28 | 北京广利核系统工程有限公司 | A kind of signal imitation generating means of DCS system physical quantity variation rate test |
| CN105204494A (en) * | 2015-09-17 | 2015-12-30 | 北京航天自动控制研究所 | General external system equivalent device testing device for control system |
| CN113086241A (en) * | 2021-03-23 | 2021-07-09 | 珠海欧比特宇航科技股份有限公司 | Airborne flight parameter simulation device and system |
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| 王冬冬;范中国;: "遥测信号模拟源的设计及实现", 电子产品世界, no. 06 * |
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