CN2579099Y - USB communication interface device of real-time signal analyzer - Google Patents
USB communication interface device of real-time signal analyzer Download PDFInfo
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- CN2579099Y CN2579099Y CN 02261385 CN02261385U CN2579099Y CN 2579099 Y CN2579099 Y CN 2579099Y CN 02261385 CN02261385 CN 02261385 CN 02261385 U CN02261385 U CN 02261385U CN 2579099 Y CN2579099 Y CN 2579099Y
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Abstract
The utility model discloses a USB communication interface device of a real-time signal analyzer, which comprises a USB controller circuit, a serial EEPROM memory circuit, an RAM data memory circuit, a USB communication interface socket circuit and a voltage control circuit. The utility model has the advantages that the utility model is plug-and-play; the communication is convenient and fast, namely, the real-time signal analyzer can access to a supervisory computer conveniently with the aid of the utility model, and the communication between the real-time signal analyzer and the supervisory computer can be carried out by installing a corresponding driver in the supervisory computer; the communication with high-speed data can be realized, large quantity of data can be gorged and disgorged under the support of the USB protocol, and the real-time signal processing can be realized better; the software update and spread are convenient, the software of the real-time signal analyzer can be updated and extended by downloading program code from the supervisory computer without physical change to the hardware; the application range is wide, the utility model can be used for various real-time signal analyzers need to communicate with the supervisory computers PC.
Description
Technical field
The utility model includes line transmission system, relates in particular to a kind of USB communication interface device of real-time signal analyzer.
Technical background
In the present signal processing system of China, adopt following structure mostly: slave computer only is responsible for the data acquisition signal preliminary treatment and data is sent to the function of host computer by certain interface (serial port, parallel port etc.), signal processing tasks (as spectrum processing, digital filtering, correlation analysis etc.), application, data are preserved finishes with showing etc. all by host computer (be PC), such communication interface data transmission rate is little, and real-time is very poor.In addition, the employed program code of instrument generally must solidify in advance to be fired in chip, then needs to fire again when Instrumental Analysis software need update, very inconvenient.Along with the DSP broad application, now begin to adopt the signal processing structure of international popular gradually, promptly utilize the special DSP processor to finish signal processing, PC carries out parameter setting, demonstration, storage etc., the high interface mode of transfer rate is adopted in the communication of slave computer and host computer, such as pci bus, USB etc., these high efficiency communication interface modes also make the renewal of instrumentation program code become convenient and swift simultaneously.
Summary of the invention
The utility model provides a kind of USB (USB) communication interface device of real-time signal analyzer, is used for solving the quick communication problem of big data quantity in real time of various Signal Analysis System signal analyzers and host computer.
The technical solution adopted in the utility model is: adopt the USB controller, serial ports eeprom memory circuit, RAM data storage circuit, USB communication interface socket, and voltage control circuit; The USB controller is connected with RAM data storage circuit through lead-out wire.The USB controller is connected with the USB communication interface socket through lead-out wire.The USB controller is connected with the serial ports eeprom memory through lead-out wire.The USB controller is connected with power control circuit through lead-out wire.The USB communication interface socket is connected to upper PC through the USB transmission cable.
The utility model provides a kind of communication interface of realizing quick real-time big data quantity between signal analyzer and the host computer PC that is used to finish in conjunction with usb protocol and EZUSB technology.Under the usb protocol framework,, can conveniently be linked on the host computer PC at real-time signal analyzer under the common signal processing occasion, and can realize the communication of big data quantity by the support of software.
The utility model is compared with traditional background technology, and the useful effect that is had is:
1, plug and play all has USB interface on most at present PC mainboards, can be linked into easily in the host computer so have the real-time signal analyzer of this interface;
2, easy communication is quick, and the corresponding driving program need only be installed on host computer, and real-time signal analyzer just can insert host computer and carry out communication;
3, high-speed data communications, real-time signal analyzer can realize the data throughput of big data quantity under the support of usb protocol, thereby better realize real time signal processing;
4, software refreshing is efficient and convenient, using this kind communication interface can be by carrying out the software refreshing of real-time signal analyzer device from host computer download program code mode, it is efficient and convenient that more original chip internal program is fired mode, and do not need hardware to carry out the physics change.
5, applied range is applied to the various chips such as the dsp chip of signal analysis, and A/D and D/A chip etc. can be linked into host computer by this USB communication interface device then by articulating FPGA.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is a USB controller circuitry schematic diagram;
Fig. 3 is serial ports eeprom memory circuit theory diagrams;
Fig. 4 is RAM data storage circuit theory diagrams;
Fig. 5 is USB communication interface socket circuit theory diagrams;
Fig. 6 is the voltage control circuit schematic diagram
Embodiment
As shown in Figure 1, structured flowchart of the present utility model is provided by accompanying drawing 1.It comprises: USB controller 1, serial ports eeprom memory circuit 2, RAM data storage circuit 3, USB communication interface socket 4, and voltage control circuit 5.
As shown in Figure 2, USB controller circuitry 1:1 comprises AN2131 chip U1, the crystal oscillating circuit that bipod crystal oscillator and capacitor C 8, C9 form, and by switch SW 1, resistance R 14, R15; the reseting switch circuit that capacitor C 7 is formed, pull-up resistor R1, R2, R3; R4, R5, R6, R7; R8, pull down resistor R9, indicator light L1 and access resistance R 10, signal input resistance R11; R12, R13, power protecting circuit capacitor C 1, C2; C3, C4, C5, C6.
As shown in Figure 3: serial ports eeprom memory circuit 2: comprise 8 24LC01 chip U2, be connected to the AN2131 chip by lead-in wire SCL and SDA, other has pull-up resistor R16, R17.
As shown in Figure 4: RAM data storage circuit 3: comprise CYC199-15VC chip U3 as data storage area or interim program storage area, and by data wire D0～D7, address wire A0～A14, control line OE, WE, CE is by 74HC00 NAND gate circuit U4, and U5 links to each other with the AN2131 chip.The output of being made up of 74HC00 NAND gate (U6) allows circuit and chip select circuit to be connected to address wire (A15) in addition.
As shown in Figure 5: USB communication interface socket circuit 4: use general USB socket, link to each other with the AN2131 chip by line USBD+ and USBD-; And use the rush of current protective circuit of forming by SN75240PW chip U7.
As shown in Figure 6: voltage control circuit 5: comprise voltage transformation TPS767D318 chip U9, by 74HC00 NAND gate U10 and switch SW 2, resistance R 18, the reset control circuit that capacitor C 10 is formed, pull-up resistor R19 is by crystal diode D1, D2, D3, the voltage stabilizing circuit that D4 forms, by capacitor C 11, C12, C13, C14, C15, the current stabilization circuit that C16 forms.
Below to concrete course of work explanation of the present utility model:
1, equipment inserts.USB cable by special use links to each other the USB interface of real-time signal analyzer with USB interface of computer, computer can detect this connection by built-in Root Hub interrupt routine automatically, that is have equipment to insert, and the order of sending the fetch equipment sequence number to the USB peripheral hardware.
2, computer is for the enumeration process of USB controller.The AN2131 kernel can move a very simple program, reads this sequence number from EEPROM (deposit the sequence number and the ID of product, this part is fired in advance), and sends host computer to.COMPUTER DETECTION is sent query requests automatically to there being equipment to insert, and USB device is responded this request, sends the Vendor ID and the Product ID of equipment, and computer loads the corresponding apparatus driver according to these two ID, finishes enumeration process.
3, install driver.Host computer is searched corresponding driver (driver can be stored on the main frame in advance) according to this sequence number.If can not find, then can point out user installation driver (driver can load by CD-ROM).The hypothesis driven program has been installed, and WINDOWS can find and move the corresponding driving program so.Can find after this driver operation to be custom-designed 8051 codes of this hardware, and it is downloaded in the memory of AN2131.
4, setting up communication connects.AN2131 is by changing special control word, changes the enabling address of program into the new porch that downloads, then temporary transient be connected (but physical connection does not change) that disconnects with computer.Behind several milliseconds, recover its connection, 8051 operation firmware programs.Thereby, set up normal communication between host computer and the AN2131QC.
The utility model is mainly used in real-time signal analyzer, and this quasi-instrument will use circuit such as DSP and FPGA to finish Signal Processing usually.Using under the prerequisite of the present utility model, about the program code of DSP and FPGA can be downloaded from host computer by USB interface, and can under the situation that does not change the circuit physical structure, just can realize new function, need only whole system restart and get final product by downloading new program code.
Claims (2)
1, the USB communication interface device of real-time signal analyzer, it is characterized in that it comprises: USB controller circuitry (1), serial ports eeprom memory circuit (2), RAM data storage circuit (3), USB communication interface socket circuit (4), voltage conversion circuit (5); USB controller circuitry (1) through lead-out wire respectively with serial ports eeprom memory circuit (2), RAM data storage circuit (3), USB communication interface socket circuit (4), voltage control circuit (5) connects; USB communication interface socket circuit (4) is connected to the host computer PC through the USB transmission cable.
2, the USB communication interface device of real-time signal analyzer according to claim 1 is characterized in that:
1) USB controller circuitry (1): comprise AN2131 chip (U1), the crystal oscillating circuit that bipod crystal oscillator and electric capacity (C8, C9) are formed, by switch (SW1), resistance (R14, R15); the reseting switch circuit that electric capacity (C7) is formed, pull-up resistor (R1, R2, R3; R4, R5, R6, R7; R8), pull down resistor (R9), indicator light (L1) and access resistance (R10), signal input resistance (R11; R12, R13), power protecting circuit electric capacity (C1, C2; C3, C4, C5, C6).
2) serial ports eeprom memory circuit (2): comprise 8 24LC01 chip (U2), SCL and SDA are connected to the AN2131 chip by lead-in wire, other have pull-up resistor (R16, R17).
3) RAM data storage circuit (3): comprise that CYC199-15VC chip (U3) is as data storage area or interim program storage area, and by data wire (D0)～(D7), address wire (A0)～(A14), control line (OE), (WE), (CE) (U4 U5) links to each other with the AN2131 chip by the 74HC00 NAND gate circuit.The output of being made up of 74HC00 NAND gate (U6) allows circuit and chip select circuit to be connected to address wire (A15) in addition.
4) USB communication interface socket circuit (4): use general USB socket, link to each other with the AN2131 chip by line USBD+ and USBD one; And use the rush of current protective circuit of forming by SN75240PW chip (U7).
5) voltage control circuit (5): comprise voltage transformation TPS767D318 chip (U9), by 74HC00 NAND gate (U10) and switch (SW2), resistance (R18), the reset control circuit that electric capacity (C10) is formed, pull-up resistor (R19) is by crystal diode (D1, D2, D3, D4) voltage stabilizing circuit of Zu Chenging, by electric capacity (C11, C12, C13, C14, C15, C16) current stabilization circuit of Zu Chenging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261385 CN2579099Y (en) | 2002-11-05 | 2002-11-05 | USB communication interface device of real-time signal analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261385 CN2579099Y (en) | 2002-11-05 | 2002-11-05 | USB communication interface device of real-time signal analyzer |
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| CN2579099Y true CN2579099Y (en) | 2003-10-08 |
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| CN 02261385 Expired - Fee Related CN2579099Y (en) | 2002-11-05 | 2002-11-05 | USB communication interface device of real-time signal analyzer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306428C (en) * | 2004-07-13 | 2007-03-21 | 海信集团有限公司 | High-speed program downloading system and method for mobile station in communication network |
| US9078162B2 (en) | 2013-03-15 | 2015-07-07 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| TWI553488B (en) * | 2015-01-27 | 2016-10-11 | Richtek Technology Corp | USB-C type cable and method for reading and writing the same |
-
2002
- 2002-11-05 CN CN 02261385 patent/CN2579099Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306428C (en) * | 2004-07-13 | 2007-03-21 | 海信集团有限公司 | High-speed program downloading system and method for mobile station in communication network |
| US9078162B2 (en) | 2013-03-15 | 2015-07-07 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| US9288683B2 (en) | 2013-03-15 | 2016-03-15 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| US9622041B2 (en) | 2013-03-15 | 2017-04-11 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| TWI553488B (en) * | 2015-01-27 | 2016-10-11 | Richtek Technology Corp | USB-C type cable and method for reading and writing the same |
| US9779048B2 (en) | 2015-01-27 | 2017-10-03 | Richtek Technology Corp. | USB type-C cable and method for reading/writing a chip in a USB type-C cable |
| US9858225B2 (en) | 2015-01-27 | 2018-01-02 | Richtek Technology Corp. | USB type-C cable and method for reading/writing a chip in a USB type-C cable |
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| CF01 | Termination of patent right due to non-payment of annual fee |