CN2739694Y - Superconducting quantuminterferometer computer interface device - Google Patents
Superconducting quantuminterferometer computer interface device Download PDFInfo
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- CN2739694Y CN2739694Y CN 200420009337 CN200420009337U CN2739694Y CN 2739694 Y CN2739694 Y CN 2739694Y CN 200420009337 CN200420009337 CN 200420009337 CN 200420009337 U CN200420009337 U CN 200420009337U CN 2739694 Y CN2739694 Y CN 2739694Y
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- superconducting quantum
- squid
- quantum interference
- interference device
- computer
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- Measuring Magnetic Variables (AREA)
Abstract
The utility model discloses a superconducting quantum interferometer computer interface device, comprising an automatic measuring device controlled by a computer. The automatic measuring device is arranged between a superconducting quantum interferometer and the computer, and the single chip computer (SCM) of the automatic measuring device adopts an AVR SCM which is connected with the computer by adopting a USB interface. The SCM of the automatic measuring device of the utility model adopts the AVR SCM which is connected with the computer by adopting the USB interface, the connecting point of the automatic measuring device and the superconducting quantum interferometer is provided with a fifteen-needle plug which are correspondingly connected with a fifteen-needle socket of the superconducting quantum interferometer. The utility model raises the processing ability of the automatic measuring device, accelerates the information interaction between the automatic measuring device and the computer and strengthens the integral processing ability of the automatic measuring device.
Description
Technical field
The utility model relates to a kind of superconducting quantum interference device (SQUID) computer interface unit, relates in particular to a kind of superconducting quantum interference device (SQUID) computer interface unit based on the USB transmission.
Background technology
Present superconducting quantum interference device (SQUID) (SQUID) is the sensitiveest detector for magnetic field known to the mankind, and it has a wide range of applications at aspects such as magnetocardiogram measurement, magnetic map measurement, Non-Destructive Testing and magnetic microscopes.The measuring and controlling of superconducting quantum interference device (SQUID) has two kinds of manual and computer-controlled aut.eq., the TT﹠C system that the manual measurement device is made up of several electronics equipments and physical equipment at present.Superconducting quantum interference device spare is put into the Dewar flask back and is connected with prime amplifier, signal generator outputting standard triangular wave field sweep voltage input prime amplifier, the hand regulator of stabilized voltage supply power supply is exported three tunnel DC voltage Vco, Att, Vdc to prime amplifier, adjust output frequency, decay and the DC level of superconducting quantum interference device (SQUID) respectively, oscillograph shows the superconducting quantum interference device (SQUID) output waveform.Its adjustment process is: manually alternately regulate the numerical value of three tunnel DC voltage Vco, Att, Vdc, observe waveform with oscillograph simultaneously, make output waveform reach best signal to noise ratio (S/N ratio).
More than existing measure and control device can finish the adjustment process of superconducting quantum interference device (SQUID), but many inconveniences are arranged.Of a great variety such as: (1) equipment, instrument, the wiring complexity needs the professional and technical personnel to operate, and the layman is difficult for grasping; (2) not high enough with the output accuracy of potentiometer adjustment DC voltage; (3) when many SQUID equipment of needs are worked simultaneously, will need many cover oscillographs and other instruments.Comparatively trouble operates; (4) be inconvenient to conduct a field operation.
Computer-controlled self-operated measuring unit is a kind of automatic control interface device of design between superconducting quantum interference device (SQUID) and computing machine, replaces parts such as original oscillograph, signal generator and hand regulator.The operation of superconducting quantum interference device (SQUID) measurement mechanism is finished from manually changing the automated manner of doing master control by PC into, can be utilized the multi computer communication principle simultaneously, finish a computing machine two above superconducting quantum interference device (SQUID) are carried out the switching controls operation.Existing superconducting quantum interference device (SQUID) computer controlled automatic interface arrangement is to be the multifunctional circuit and computing machine serial line interface (RS-232 interface standard) communication of core with the MCS51 microprocessor.Because the restriction of serial ports speed (speed is 19200bit/s), the data rate in the interface is slow, causes some high-frequency signals by filtering.
The utility model content
At the existing problem and shortage of above-mentioned existing superconducting quantum interference device (SQUID) computer interface unit, the purpose of this utility model provides a kind of superconducting quantum interference device (SQUID) computer interface unit based on the USB transmission that satisfies data traffic demand between self-operated measuring unit and computing machine and the superconducting quantum interference device (SQUID).
The utility model is achieved in that a kind of superconducting quantum interference device (SQUID) computer interface unit, include computer-controlled self-operated measuring unit, this self-operated measuring unit is located between superconducting quantum interference device (SQUID) and the computing machine, the single-chip microcomputer of described self-operated measuring unit adopts the AVR single-chip microcomputer, and the employing USB interface is connected between this single-chip microcomputer and the described computing machine.
Further, described AVR single-chip microcomputer is specially mega8515 series.
Further, described self-operated measuring unit and described superconducting quantum interference device (SQUID) junction are provided with 15 pin plugs, this 15 pin plug and the corresponding connection of 15 needle sockets on the described superconducting quantum interference device (SQUID).
The single-chip microcomputer of self-operated measuring unit of the present utility model adopts the AVR single-chip microcomputer, adopt USB interface to be connected between this single-chip microcomputer and the computing machine, self-operated measuring unit and superconducting quantum interference device (SQUID) junction are provided with 15 pin plugs, this 15 pin plug and the corresponding connection of 15 needle sockets on the superconducting quantum interference device (SQUID).Self-operated measuring unit processing power of the present utility model will improve greatly, and the information interaction between itself and the computing machine will become fast, and the bulk treatment ability is strengthened.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is made detailed description.
Fig. 1 is an one-piece construction block diagram of the present utility model.
Among the figure, 1---single-chip microcomputer, 2---triangular-wave generator, 3-1,3-2,3-3---digital simulation (D/A) change-over circuit, 4---RESET reset signal circuit, 5---the TEST/SIGNAL signal circuit, 6---analog digital (A/D) change-over circuit, 7---15 pin plugs, 8---the superconducting quantum interference device (SQUID) prime amplifier, 9---superconducting quantum interference device (SQUID), 10---USB interface chip PHILIPS D12 and circuit thereof, 11---USB plug, 12---PC compatible.
Embodiment
As shown in Figure 1, it is the multifunctional circuit of core that automatic control interface device of the present utility model is specifically taked with AVR single-chip microcomputer mega8515 microprocessor, the analog-digital chip MAX1119 of SPI interface and analog-digital chip MAX5742.By USB interface chip PHILIPS D12 communication, order that computing machine sends to interface arrangement and round data transmit by this USB connector 11 between single-chip microcomputer and the main frame.Frame of broken lines partly is a parallel circuit, and it controls prime amplifier 8.Be connected with triangular-wave generator 2 circuit and form with digital simulation (D/A) change-over circuit, analog digital (A/D) change-over circuit 6 by single-chip microcomputer 1; Digital simulation (D/A) change-over circuit comprises amplifying circuit, level shift circuit and digital simulation (D/A) conversion chip, three tunnel DC voltage tunable steps of its output are 3 millivolts, Vco, Att range of adjustment are 0 to 12 volt, the Vdc range of adjustment is-12 volts to+12 volts, on these three tunnel 15 pin plugs that output is connected to the superconducting quantum interference device (SQUID) prime amplifier is connected; Analog digital (A/D) change-over circuit follows 15 pin plugs that are connected with the superconducting quantum interference device (SQUID) prime amplifier to be connected, and comprises amplifying circuit, level shift circuit and analog digital (A/D) conversion chip, and this circuit has replaced oscillographic function; On 15 pin plugs that triangular-wave generator output also is connected to the superconducting quantum interference device (SQUID) prime amplifier is connected, the triangle wave voltage of its generation is the needed field sweep voltage of superconducting quantum interference device (SQUID).Multifunctional circuit also produces the two-way logical signal, and one is the TEST/SIGNAL signal, and another is the RESET signal.When the TEST/SIGNAL signal was high level (positive 9V), expression superconducting quantum interference device (SQUID) amplifier was operated in the TEST state, and when TEST/SIGNAL output low level (0V), expression superconducting quantum interference device (SQUID) amplifier is operated in the SINGAL state.And another RESET signal, when the operator clicks the soft switch that indicates RESET on computer screen, circuit will produce a positive pulse at the RESET output terminal, as the reseting controling signal of integrating circuit in the superconducting quantum interference device (SQUID) prime amplifier.15 pin plugs that these two control signals also all are connected with the superconducting quantum interference device (SQUID) prime amplifier link to each other.USB interface chip PHILIPS D12 and circuit 10 thereof are connected with USB plug 11.
Single-chip Controlling D/A conversion circuit of the present utility model (D/A circuit) produces DC voltage Vco, Att, Vdc, this three tunnel DC voltage is adjusted output frequency, decay and the DC level of superconducting quantum interference device (SQUID) respectively, thereby changes the duty and the output waveform of superconducting quantum interference device (SQUID); With analog-to-digital conversion circuit (A/D circuit) to the sampling of the output waveform of superconducting quantum interference device (SQUID), read in single-chip microcomputer analysis, import computing machine into again and show; On 15 pin plugs that triangular-wave generator output also is connected to the superconducting quantum interference device (SQUID) prime amplifier is connected, the triangle wave voltage of its generation is the needed field sweep voltage of superconducting quantum interference device (SQUID).When Vco, Att, Vdc get different numerical value, the superconducting quantum interference device (SQUID) output waveform is different, so when output waveform does not reach best signal to noise ratio, by three tunnel DC voltage that single-chip microcomputer is regulated D/A conversion circuit (D/A circuit) output repeatedly, make its output waveform reach maximum signal to noise ratio.Be based on the usb protocol transmission with the communication of main frame, utilized USB interface chip PHILIPS D12, by Single-chip Controlling PHILIPS D12 work, D12 is connected with a USB socket of multifunctional circuit one end, and this USB socket links to each other with computing machine USB communication port by cable.
The utility model has realized utilizing USB interface that the operation of superconducting quantum interference device (SQUID) measurement mechanism is finished from manually changing the automated manner of doing master control by PC into, and has guaranteed the fast of information processing.
Claims (3)
1, a kind of superconducting quantum interference device (SQUID) computer interface unit, include computer-controlled self-operated measuring unit, this self-operated measuring unit is located between superconducting quantum interference device (SQUID) and the computing machine, it is characterized in that, the single-chip microcomputer of described self-operated measuring unit adopts the AVR single-chip microcomputer, and the employing USB interface is connected between this single-chip microcomputer and the described computing machine.
2, superconducting quantum interference device (SQUID) computer interface unit as claimed in claim 1 is characterized in that, described AVR single-chip microcomputer is specially mega8515 series.
3, superconducting quantum interference device (SQUID) computer interface unit as claimed in claim 1, it is characterized in that, described self-operated measuring unit and described superconducting quantum interference device (SQUID) junction are provided with 15 pin plugs, this 15 pin plug and the corresponding connection of 15 needle sockets on the described superconducting quantum interference device (SQUID).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009337 CN2739694Y (en) | 2004-09-21 | 2004-09-21 | Superconducting quantuminterferometer computer interface device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009337 CN2739694Y (en) | 2004-09-21 | 2004-09-21 | Superconducting quantuminterferometer computer interface device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739694Y true CN2739694Y (en) | 2005-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420009337 Expired - Lifetime CN2739694Y (en) | 2004-09-21 | 2004-09-21 | Superconducting quantuminterferometer computer interface device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739694Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459572A (en) * | 2013-09-24 | 2015-03-25 | 中国科学院上海微系统与信息技术研究所 | Superconducting quantum interference sensing system based on multiple channels |
-
2004
- 2004-09-21 CN CN 200420009337 patent/CN2739694Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459572A (en) * | 2013-09-24 | 2015-03-25 | 中国科学院上海微系统与信息技术研究所 | Superconducting quantum interference sensing system based on multiple channels |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140921 Granted publication date: 20051109 |