CN205247135U - Integrated observing and controlling system of multiple signal intelligence - Google Patents

Abstract

The utility model discloses an integrated observing and controlling system of multiple signal intelligence, its characterized in that: including power module, communication module, level conversion module, multichannel module, signal isolation module, ADC module and FPGA host system, incoming signal connects the multichannel module, and the multichannel module is connected with the signal isolation module, and the signal isolation module while still is connected with the ADC module, and the ADC module still is connected with FPGA host system, FPGA host system and communication module connects, realizes and host computer communication through communication module. The utility model discloses not only integrateed detection, oscillography and the human -computer interaction function of 16 way signals, and can control each way signal end conversion between 4 kinds of operating condition, the equipment operation who researches and develops is simple, and the system uses extensively, especially is suitable for situations such as car signal control and detection.

Description

The integrated TT&C system of multiple signals intelligence

Technical field

The utility model relates to the integrated measurement and control area of multiple signals intelligence, the integrated observing and controlling of especially a kind of multiple signals intelligenceSystem.

Background technology

It is reported, what the present number of active lanes that common measurement of multipoint signals equipment can detect was on the market maximum reaches 8 tunnels,Signal detection sample rate is many lower than 2MHz, and only limits to measuring ability, does not possess control function. And general circuit detecting instrument is logicalPort number still less, does not possess external signal, power output function yet. So the measurement of these integration of equipments multiple signals and control,There is very high innovative significance, can fill up the blank of present this type of instrument measurement and instrument control appliance.

Development trend

(1) along with day by day accelerating of people's rhythm of life and sharply increasing of family-sized car, and at high professional qualification maintenance maintenanceIn the situation that personnel lack relatively, the low technical staff of grade establishes with regard to be badly in need of having the multiple signals observing and controlling of measuring with controlling function simultaneouslyStandby.

(2) and a lot of electronic equipment maintenance fan in view of the equipment price such as oscillograph, signal source costliness, more trendIn selecting the similar simple and easy measure and control device with man-machine interface.

(3) the integrated of instrument and meter is the inevitable development trend of instrument measurement and instrument control industry; This Project-developingDevice integrated just multiple signals measure and show the function of controlling with multiple signals output, meet industry development trend.

The system (while exceeding 10 tunnel as port number) that needs multichannel low frequency signal to detect for some, is used general oscillographyDevice cannot accurately be judged the logical relation between each signal. Much detect in addition the situation of communication line link break-make, as automobileLine signal break-make detects case, is necessary to design a multichannel, multipurpose, installation testing conveniently, and has signal, adjustableThe multiple signals measuring and controlling equipment of source of stable pressure output function.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of multiple signals intelligence integrated survey at thisControl system; The utility model through redesign, now on the market existing relevant device comprise measurement of multipoint signals system andMultiple signals control system, the utility model is integrated together these two kinds of systems effectively, has solved some needsDetect and control the case of use in conjunction, there is good social application and be worth.

The utility model is achieved in that the integrated TT&C system of a kind of multiple signals intelligence of structure, it is characterized in that: instituteState TT&C system and comprise power module, communication module, level switch module, multi-channel module, signal isolation module, ADC moduleWith FPGA main control module; Input signal connecting multi-channel module, multi-channel module is connected with signal isolation module, signal isolation modePiece is also connected with ADC module simultaneously, and ADC module is also connected with FPGA main control module, FPGA main control module and described communication moduleConnect, realize with host computer and communicating by letter by communication module.

According to the integrated TT&C system of multiple signals described in the utility model intelligence, it is characterized in that: described power module byAC forms to boost module two parts of DC to modular converter and the DC of DC; AC24V is transformed into DC12V by AC-DC modular converter,It is adjustable that DC12V is become DC12-48V by DC-DC boost module;

Described communication module adopts CH340 to realize;

Described level switch module adopts SN74ALVC164245 electrical level transferring chip to realize;

The passage that described multi-channel module forms 16 tunnels by the cascade of 2 CD4051 switches;

Described signal isolation module adopts OP07 chip to realize;

Described ADC module adopts the sampling of TLC549 chip settling signal;

Described FPGA main control module main control chip adopts the good PLD EP1C3T144C8N of flexibility.

The utility model has the advantage of: the integrated TT&C system device of multiple signals intelligence described in the utility model, noOnly detection, oscillography and the human-computer interaction function of integrated Liao16 road signal, and can control each road signal end and turn between 4 kinds of dutiesChange; The equipment operating of researching and developing is simple, and system applies is extensive, is particularly suitable for the situations such as vehicle signal control and detection.

Can find on the market now 8 road signal detection systems, but similar devices do not have control function, this project systemSignal detection port number is 16 tunnels nearly, and 4 state control functions are preset on Qie Mei road, and support external regulated power supply output function.This equipment is practical, and the manipulation of host computer man-machine interface is simple, and simple and convenient operation is installed, and is more suitable for vehicle signal and detectsAnd control etc., these advantages all can ensure that it has wide market.

Brief description of the drawings

Fig. 1 is operation block diagram

Fig. 2 entire system schematic diagram

Fig. 3 power module

Fig. 4 communication module

The main logical resource schematic diagram of Fig. 5 FPGA main control module main control chip

Fig. 6 FPGA main control module circuit diagram

Fig. 7 ADC module circuit diagram

Fig. 8 is its work schedule schematic diagram of ADC module TLC549 chip

Fig. 9 channel switching module

Figure 10 signal isolation module

Figure 11 level switch module

Figure 12 power module block diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing, 1-12 is elaborated to the utility model, to the technical scheme in the embodiment of the present inventionBe clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of wholeEmbodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisiteThe every other embodiment obtaining, belongs to the scope that the utility model is protected.

The utility model provides a kind of multiple signals intelligence integrated TT&C system by improvement, as shown in Figure 1, and can be according toFollowing mode is implemented; Described TT&C system comprises power module 1, communication module 2, level switch module 3, multi-channel module4, signal isolation module 5, ADC module 6 and FPGA main control module 7; Input signal connecting multi-channel module 4, multi-channel module 4 withSignal isolation module 5 connects, and signal isolation module 5 is also connected with ADC module 6 simultaneously, ADC module 6 also with FPGA main control module 7Connect, FPGA main control module 7 is connected with described communication module 2, is realized and being communicated by letter with host computer by communication module 2.

The utility model collection plate adopts modularized design, comprises power module, communication module, level switch module, letterNumber isolation module, ADC module, multi-channel module and FPGA main control module; Structure of block diagram is as Fig. 1, and it is mainly:

Power module: collection plate adopts USB power supply, and produces respectively 3.3V by AMS1117-3.3 and AMS1117-1.5Voltage and 1.5V voltage. Whole plate has 3 large voltages, and 3.3V is the IO voltage of FPGA, and 1.5V is the core voltage of FPGA, and 5V isThe voltage of FPGA peripheral components. Collection plate is Digital Analog Hybrid Circuits, and for the integrality of signal, digital circuit and analog circuit divideOpen, and adopt single-point grounding.

Communication module: communication adopts CH340 to complete the conversion of a USB to serial ports. CH340 is a usb busConnect chip, can realize USB device interface at full speed, compatible USB2.0, and it has hardware full duplex serial ports, built-in transmitting-receiving bufferingDistrict, supports communication baud rate 50bps～2Mbps. On collection plate, this chip adopts 5V power supply, by a small amount of peripheral circuitCan form an efficient transmission link.

C17 and C18 are starting of oscillation electric capacity, help the clock signal of crystal Y1 fast and stable. Usb signal D+_p and D-_nBe a pair of differential signal, at PCB layout, ensure that these two lines are isometric, can improve like this reliability of communication.

FPGA main control module: main control chip adopts the good PLD EP1C3T144C8N of flexibility, it is mainWant logical resource as shown in Figure 5.

This fpga chip completes the sending and receiving of RS422, the decoding of RS422 signal, and the control of passage and ADC adoptCollection.

Lose because FPGA is power down, so a PROM of configuration, model is EPCS1N, and capacity is 1Mb, configures by ASPattern, can download to program in this PROM. In the time that system powers on, the program that FPGA can load in PROM automatically arrives inner fortuneOK. The clock of FPGA adopts the input of 48M clock, has the active crystal oscillator of a 3.3V power supply to provide.

ADC module: collection plate adopts the sampling of TLC549 chip settling signal. TLC549 is the one that TI company producesHigh performance 8 A/D converters, have adopted CMOS technique, and the method that it successively approaches with 8 bit switch electric capacity realizes A/D and turnsChange, its conversion speed is less than 17us, and maximum slew rate is 40000HZ, 4MHZ typical internal system clock. TLC549 canPassage three line spi bus modes complete mutual with FPGA. Its work schedule as shown in Figure 8. The power supply of TLC549 is 5V, soIts signal input range is 0 ~ 5V, can meet the dynamic reference voltage of external input signal.

Channel switching module: CD4051 is single 8 passage numeral control simulation electronic switches, has tri-binary system controls of A, B and CInput processed and INH be totally 4 inputs, has low conduction impedance and very low cut-off leakage current. On collection plate, pass through 2The passage that the cascade of CD4051 forms 16 tunnels switches.

Signal isolation module: in collection plate, after the output of signal from analog electronic switch, for the switching that reduces switch is made an uproarThe impact of sound on sampling, has used amplifier OP07 to form one and has penetrated with circuit, realizes the isolation of signal. OP07 chip is a kind of lowNoise, bipolarity (dual power supply) the operational amplifier integrated circuit of non-chopper-zero-stabilized. OP07 has input biased electrical simultaneouslyFlow the low and high feature of open-loop gain, the characteristic of this low imbalance, high open-loop gain makes OP07 be specially adapted to high-gainThe aspects such as the small-signal of measurement device and amplification sensor.

Level switch module: in collection plate, a large amount of peripheral hardwares has all been used the voltage of 5V, but the voltage of the IO of FPGA is3.3V, so in the interaction of FPGA and peripheral hardware, need to do a level conversion.

SN74ALVC164245 is a kind of electrical level transferring chip, has A, B two-way, totally 16 pairs of signals, can complete 3.3V andMutual conversion between 5V signal. A, the signal conversion direction of B two-way and enable to control separately.

Power module: power module is made up of to boost module two parts of DC to modular converter and the DC of DC AC. AC-DCAC24V is transformed into DC12V by modular converter, and it is adjustable that DC12V is become DC12-48V by DC-DC boost module.

Expection technical indicator, economic indicator is as follows; Main expection technical indicator of the present utility model comprises:

(1) system power supply: input voltage 22VAC, direct current digital and Adjustable output voltage 10-48VDC, electric current≤3A;

(2) signal detection port number=16, sample frequency: be not less than 2MHz;

(3) communication interface: usb communication interface meets USB2.0 agreement;

(4) structural volume weight: volume is not more than 65 × 200 × 300, and weight is not more than 2Kg;

(5) material: the environmental contaminants such as selected materials is not mercurous, plumbous.

(6) safety Design: ac-dc conversion adopts insulating power supply design.

Expection economic indicator

(1), not when supplying power for outside, system power consumption is low, is less than 10W;

(2) there is user-machine interface, easily left-hand seat, handled easily;

(3) if product batch production, cost<300 yuan/cover, market price>800 yuan/cover, returns of investment are considerable;

(4) reliable in structure, easy to maintenance, save later maintenance cost etc.

Corresponding innovative point after the utility model improves: this project belongs to technology application innovation category, and it examines multichannelSurvey with multichannel multiposition control and effectively combine, not only there is multichannel detection and man-machine interface and virtual oscilloscope meritCan, can also control every road signal at high level, digitally, change between 4 kinds of duties such as floating empty input, high voltage output.

Project characteristic: the equipment that this project is researched and developed can be applicable to the detection of multichannel low frequency signal (as vehicle-mounted CAN bus)And between multi-path digital circuit, the judgement of logical relation is applied, and for the situations such as multicore holding wire break-make detection, mentality of designingNovelty, equipment operating is simple, and system applies is extensive, is particularly suitable for the situations such as vehicle signal control and detection, has very high societyCan use value.

Key problem in technology of the present utility model is embodied in:

(1) system voltage management circuit, the direct current digital and Adjustable that design can supplying power for outside;

(2) as many as 16 road signal deteching circuit designs, and there are 4 controllable states on each road;

(3) USB interface-based high-speed communication circuit design, and host computer Human Machine Interface;

(3) structural design: 16 road signaling interfaces, Universal USB interface and equipment appearance design etc.

To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use this practicality newType. To be apparent for those skilled in the art to the multiple amendment of these embodiment, determine hereinThe General Principle of justice can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments. CauseThis, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed hereinThe widest scope consistent with features of novelty.

Claims (2)

1. the integrated TT&C system of multiple signals intelligence, is characterized in that: described TT&C system comprises power module (1), logicalLetter module (2), level switch module (3), multi-channel module (4), signal isolation module (5), ADC module (6) and FPGA master controlModule (7); Input signal connecting multi-channel module (4), multi-channel module (4) is connected with signal isolation module (5), signal isolationModule (5) is also connected with ADC module (6) simultaneously, and ADC module (6) is also connected with FPGA main control module (7), FPGA main control module(7) be connected with described communication module (2), realize and communicating by letter with host computer by communication module (2).

2. the integrated TT&C system of multiple signals intelligence according to claim 1, is characterized in that: described power module (1) byAC forms to boost module two parts of DC to modular converter and the DC of DC; AC24V is transformed into DC12V by AC-DC modular converter,It is adjustable that DC12V is become DC12-48V by DC-DC boost module;

Described communication module (2) adopts CH340 to realize;

Described level switch module (3) adopts SN74ALVC164245 electrical level transferring chip to realize;

The passage that described multi-channel module (4) forms 16 tunnels by the cascade of 2 CD4051 switches;

Described signal isolation module (5) adopts OP07 chip to realize;

Described ADC module (6) adopts the sampling of TLC549 chip settling signal;

Described FPGA main control module (7) main control chip adopts the good PLD EP1C3T144C8N of flexibility.