CN101122785A - Automatic measurement and control device and system - Google Patents
Automatic measurement and control device and system Download PDFInfo
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- CN101122785A CN101122785A CNA2007100769894A CN200710076989A CN101122785A CN 101122785 A CN101122785 A CN 101122785A CN A2007100769894 A CNA2007100769894 A CN A2007100769894A CN 200710076989 A CN200710076989 A CN 200710076989A CN 101122785 A CN101122785 A CN 101122785A
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Abstract
The invention is applicable to automatic instrumentation and command field and provides an automatic instrumentation and command device, comprising a sampling converting unit of analog signal used for receiving analog voltage signals from one testing point or a plurality of testing points, a microprocessor used for receiving digital signals from the sampling converting unit of analog signal and an external input. The microprocessor enters the digital signals from the sampling converting unit of analog signal and the external input into the computer for external monitoring by a built-in universal serial bus or an external memory interface. The automatic instrumentation and command device only requires a common USB interface and a network data transmission interface that are universally provided with the current computers. As the automatic instrumentation and command device does not require other hardware devices, the automatic instrumentation and command device has lower cost and good transmission speed. Moreover, multiplexed signal testing also can ensure that a plurality of testing points can perform testing at the same time, thereby further reducing product test cycle.
Description
Technical field
The invention belongs to the automatic measuring and controlling field, relate in particular to a kind of automatic measurement and control device and system.
Background technology
In the large batch of commercial production of modernization, require the test macro personnel must in the shortest time, finish the performance test of product, and modern qualitative control also requires test data must be able to review, can analyze, computer based Auto-Test System (Automatic Test System, ATS) not only can finish test fast and accurately, can also write down the test data that obtains easily, greatly reduce the difficulty that test data is reviewed and analyzed, so ATS just becomes necessary selection.
Mostly be by general purpose interface bus (General PurposeInterface BUS between the existing automatic measuring and controlling system equipment, GPIB) connect, not only transmission speed is limited to adopt the TT﹠C system of this connected mode, test period is long, and can only connect 15 equipment on the bus at most, transmission length is no more than 20 meters, and its computer end of what is more important and equipment end all need the GPIB card of configure dedicated, link cost costliness.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of automatic measurement and control device, is intended to solve the problem that data rate is fast inadequately between existing measuring and controlling equipment, test is quick inadequately, number of bus nodes is insufficient and cost is expensive.
The embodiment of the invention is achieved in that a kind of automatic measurement and control device, and described device comprises:
Simulating signal sample conversion unit is used to receive the analog voltage signal of one or more test points, and described analog voltage signal is converted to digital signal and output; And
Microprocessor, be used to receive the digital signal of described simulating signal sample conversion unit output and the digital signal of outside input, and by its built-in USB (universal serial bus) or external memory interface with the digital signal of described digital signal and outside input input to outside observing and controlling with computing machine to carry out observing and controlling.
Another purpose of the embodiment of the invention is to provide a kind of automatic measuring and controlling system, and described system comprises:
Automatic measurement and control device is used for the analog voltage signal of one or more test points of its reception is converted to digital signal, and receives the digital signal of outside input, by its built-in USB (universal serial bus) or external memory interface output digital signal; And
The observing and controlling computing machine is used for receiving the digital signal that described automatic testing equipment is exported by network interface or USB (universal serial bus), and digital signal is carried out observing and controlling and shown relatively judgement, record or control.
The automatic measuring and controlling system that the embodiment of the invention provides is with the USB interface and the network data transmission interface of common configuration in the present computing machine, need not to dispose again other hardware device, cost is lower, and data rate is fast, and the test of multiple signals guaranteed that also a plurality of test points can test simultaneously, further shortens the product test cycle.
Description of drawings
Fig. 1 be the automatic measurement and control device that provides of the embodiment of the invention when testing and observing and controlling with the annexation synoptic diagram of computing machine;
Fig. 2 is the modular structure schematic diagram of the automatic measurement and control device inside that provides of the embodiment of the invention;
Annexation figure when the automatic measurement and control device that Fig. 3 is to use the embodiment of the invention to provide is formed the test LAN (Local Area Network).
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The automatic measurement and control device that the embodiment of the invention provides can receive multi-channel analog voltage differential signal and 8 way word input signals simultaneously, can test a plurality of test points simultaneously, the equipment of TT﹠C system inside adopts USB (universal serial bus) (Universal Serial Bus, USB) interface or network data transmission interface, connected mode is flexible, the transmission data speed is fast, and it is with low cost, wherein network interface comprises LAN (Local Area Network) (Local Area Net, LAN) interface and wide area network (Wide Area Net, WAN) interface.
Fig. 1 show automatic measurement and control device that the embodiment of the invention provides when testing and observing and controlling with the annexation of computing machine, if the voltage of tested pilot is simulating signal, the test point of tested equipment is connected with the voltage input channel of automatic measurement and control device by the voltage signal line of one 3 core, automatic measurement and control device can be imported 8 road voltage signals simultaneously, therefore can insert a plurality of test points and measure simultaneously; For the occasion that needs switching value control, this automatic measurement and control device also provides 8 road triodes-triode logical circuit (Transistor-Transistor, TTL) digital input channel of level compatibility mode, and 16 the road Transistor-Transistor Logic level compatibility mode or 12V relay drive the digital output channel of output mode, input signal is linked into the input interface of automatic measurement and control device by the plug of 10 pins, output interface then can use the ox horn plug of 20 pins to pick out, when relay drives output mode, output interface also can provide to outside relay+output voltage of 12V.
Automatic measurement and control device can be selected network interface or USB interface with observing and controlling for use with communicating by letter of computing machine, network interface uses 8 special-purpose core multiple twin grid lines to connect, USB interface then uses 4 special-purpose core cables to connect, during test, the tester can test the digital signal of being imported by automatic measurement and control device with the dependence test program on the computing machine by observing and controlling, and the test data that obtains of record and judge test result, whether for example relatively judge whether qualified etc. in the scope of test regulation, tested equipment.
Fig. 2 shows the modular structure principle of the automatic measurement and control device inside that the embodiment of the invention provides, and for convenience of description, only shows the part relevant with the embodiment of the invention.As shown in Figure 2, automatic measurement and control device comprises that (Micro Controller Unit MCU), passes through serial interface communication between simulating signal sample conversion unit 1 and the microprocessor 2 for simulating signal sample conversion unit 1 and microprocessor 2.Simulating signal sample conversion unit 1 is used to receive the analog voltage signal of the test point input of tested equipment, after this simulating signal is converted into digital signal, export microprocessor 2 to by serial line interface, microprocessor 2 by USB interface with digital signal input to observing and controlling with computing machine to carry out dependence test, also can pass through its built-in external memory interface (External Memory Interface, EMIF) by behind the network interface chip digital signal being inputed to the observing and controlling computing machine of lan network inside or WAN network inside, EMIF interface and USB interface can not be worked simultaneously, the EMIF interface is applicable to long distance, distributed, jumbo test macro, USB interface then is applicable to short distance, in the test macro of smallest number, under the situation that no USB device connects, will use the EMIF interface communication.
Simulating signal sample conversion unit 1 has multichannel differential voltage sampling channel, one or more can be selected during concrete the test arbitrarily, its standard configuration can gather ± differential voltage signal of 60V, each road sampling channel all has three Wiring ports, be CHH, CHL, GND, CHOH, CHOL, GND0 and CHnH, CHnL, GNDn represent the Wiring port of the first via and n+1 respectively among the figure.The analog voltage signal of tested testing of equipment point inputs to and voltage difference sampling channel voltage conditioning module one to one through the difference sampling channel, by the voltage conditioning module high voltage of importing is adjusted to analog to digital conversion sampling module (Analog Digital Converter, ADC) within but the range of receiving, Verf0 among Fig. 2, Verf1 is respectively the reference voltage of voltage conditioning module and ADC sample conversion module, analog voltage signal after the conditioning of superpotential conditioning module inputs to ADC sample conversion module through the simulating signal positive input terminal AIN0+/AINn+ and the negative input end AIN0-/AINn-of ADC sample conversion module respectively, and ADC inputs to microprocessor 2 after analog voltage signal is converted to digital voltage signal.
The automatic measurement and control device that the embodiment of the invention provides also has 8 way word input interfaces of complete compatible Transistor-Transistor Logic level standard, and 16 way word output interface, output interface has two kinds of output modes, be respectively the 12V relay and drive output mode and 16 road Transistor-Transistor Logic level output modes, the latter is applicable to the situation in the time of need going to control external auxiliary circuit with more logic control signal, the original state that powers on each road can freely be set as required by the user, as shown in Figure 2, the output of this numeral input and two kinds of patterns is connected with microprocessor 2 by the I/O mouth of microprocessor 2.Microprocessor 2 will be by the digital signal of 8 way word input interfaces or the input of ADC sample conversion module, by USB interface or network interface chip export to observing and controlling with computing machine testing, observing and controlling with computer testing after and the test data that obtains of record and judge test result.USB interface in the embodiment of the invention meets universal serial bus standard, its socket is the Type B plug, single USB line can reach 5 meters, 5 grades of USB can be arranged by hub (HUB) cascade at most, can make automatic measurement and control device reach 25 meters to observing and controlling with the distance of computing machine.Microprocessor shown in Figure 2 is by external memory interface (External Memory Interface, EMIF) Control Network interface chip, digital signal transfers to observing and controlling computing machine by Registered Jack-45 by 8 core multiple twin grid lines through behind the network interface chip, wherein, Registered Jack-45 can be the modular jack by 8 jacks of international connector standard definition, TX+/TX-is respectively the differential signal that network interface chip is exported in LAN (Local Area Network), and RX+/RX-then is respectively the differential signal from LAN (Local Area Network) that network interface chip receives.
The automatic measurement and control device that the embodiment of the invention provides adopts the power supply mode of external power supply, its mesohigh sampling section adopts dual power supply, for the negative voltage collection provides basic assurance, and adopt cheap, data rate fast and be easy to the USB interface or the network interface of network interconnection, can also make automatic measuring and controlling no longer be subjected to the restriction in space, the automatic measurement and control device and the network equipment that how to utilize the embodiment of the invention to provide will be provided below in detail form test LAN (Local Area Network) automatically.As shown in Figure 3, whole test LAN (Local Area Network) is become with computer set by the network equipment, automatic measurement and control device, observing and controlling, the network equipment needs one and has dynamically configuration protocol (Dynamic Host Configuration Protol gradually, DHCP) the network twisted-pair feeder of the router of function, some HUB (by the quantity of system size decision HUB) and five classes or better quality, observing and controlling need be equipped with operating systems commonly used and hardware device and the corresponding software of supporting lan network such as Windows98/2000/Me/Xp with computing machine.Among Fig. 3, router has the function of isolation test grid and external network, so that test network does not have influence on normal job network, router and hub HUB1, HUB2, HUB3 connects by network interface, C1-C11 is automatic measurement and control device, wherein, C1, C2, C3 is connected with HUB1 by network interface, C4, C5, C6, C7 is connected with HUB3 by network interface, and HUB4, C8, C9 is connected to HUB2 by network interface, the network interface of HUB2 is connected with C10 again, C11 and observing and controlling computing machine, whole networking mode just use hub to expand network interface when network interface is not enough according to star-like local area network building mode flexible topology.Because observing and controlling must be in the scope of same subnet address with automatic measurement and control device with the IP address of computing machine, therefore each equipment in the ability access system recommend observing and controlling to serve acquisition IP address from the DHCP of router equally with computing machine and measure and control device.
The automatic measurement and control device that the embodiment of the invention provides is with the USB interface and the network data transmission interface of common configuration in the present computing machine, need not to dispose again other hardware device, cost is lower, and data rate is fast, and the test of multiple signals guaranteed that also a plurality of test points can test simultaneously, further shortens the product test cycle.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an automatic measurement and control device is characterized in that, described device comprises:
Simulating signal sample conversion unit is used to receive the analog voltage signal of one or more test points, and described analog voltage signal is converted to digital signal and output; And
Microprocessor, be used to receive the digital signal of described simulating signal sample conversion unit output and the digital signal of outside input, and by its built-in USB (universal serial bus) or external memory interface with the digital signal of described digital signal and outside input input to outside observing and controlling with computing machine to carry out observing and controlling.
2. device as claimed in claim 1 is characterized in that, described simulating signal sample conversion unit comprises:
Multichannel differential voltage sampling channel, it is connected one to one with tested pilot when test;
A plurality of voltage conditioning module, it is corresponding one by one with described multichannel differential voltage sampling channel, by the analog voltage signal of described multichannel differential voltage sampling channel acceptance test point, and adjusts described analog voltage signal; And
The analog to digital conversion sampling module is connected with described a plurality of voltage conditioning module, receives through adjusted analog voltage signal, and is converted to digital signal.
3. device as claimed in claim 2 is characterized in that, described analog voltage signal is a differential signal.
4. device as claimed in claim 1 is characterized in that, described microcontroller also comprises:
Serial line interface is used for the digital signal of described simulating signal sample conversion unit output is inputed to microcontroller;
The external digital signal input interface is used for the digital signal of outside input is inputed to described microcontroller; And
Digital output interface is used for to outside relay outputting drive voltage signal or to external auxiliary circuit output logic control signal.
5. an automatic measuring and controlling system is characterized in that, described system comprises:
Automatic measurement and control device is used for the analog voltage signal of one or more test points of its reception is converted to digital signal, and receives the digital signal of outside input, by its built-in USB (universal serial bus) or external memory interface output digital signal; And
The observing and controlling computing machine is used for receiving the digital signal that described automatic testing equipment is exported by network interface or USB (universal serial bus), and digital signal is carried out observing and controlling and shown relatively judgement, record or control.
6. system as claimed in claim 5 is characterized in that, described automatic measurement and control device comprises:
Simulating signal sample conversion unit is used to receive the analog voltage signal of one or more test points, and described analog voltage signal is converted to digital signal and output; And
Microprocessor, be used to receive the digital signal of described simulating signal sample conversion unit output and the digital signal of outside input, and by its built-in USB (universal serial bus) or external memory interface with the digital signal of described digital signal and outside input input to outside observing and controlling with computing machine to carry out observing and controlling.
7. system as claimed in claim 6 is characterized in that, described simulating signal sample conversion unit comprises:
Multichannel differential voltage sampling channel, it is connected one to one with tested pilot when test;
A plurality of voltage conditioning module, it is corresponding one by one with described multichannel differential voltage sampling channel, by the analog voltage signal of described multichannel differential voltage sampling channel acceptance test point, and adjusts described analog voltage signal; And
The analog to digital conversion sampling module is connected with described a plurality of voltage conditioning module, receives through adjusted analog voltage signal, and is converted to digital signal.
8. system as claimed in claim 7 is characterized in that, described analog voltage signal is a differential signal.
9. system as claimed in claim 6 is characterized in that, described microcontroller comprises:
Serial line interface is used for the digital signal of described simulating signal sample conversion unit output is inputed to microcontroller;
The external digital signal input interface is used for the digital signal of outside input is inputed to described microcontroller; And
Digital output interface is used for to outside relay outputting drive voltage signal or to external auxiliary circuit output logic control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100769894A CN101122785A (en) | 2007-09-18 | 2007-09-18 | Automatic measurement and control device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100769894A CN101122785A (en) | 2007-09-18 | 2007-09-18 | Automatic measurement and control device and system |
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| CN101122785A true CN101122785A (en) | 2008-02-13 |
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| CNA2007100769894A Pending CN101122785A (en) | 2007-09-18 | 2007-09-18 | Automatic measurement and control device and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242519A (en) * | 2015-10-21 | 2016-01-13 | 上海电控研究所 | Beidou watch card board detecting device |
| CN105811981A (en) * | 2016-03-09 | 2016-07-27 | 深圳市博巨兴实业发展有限公司 | Automatic test platform for high-precision ADC measurement |
| CN108363446A (en) * | 2018-03-13 | 2018-08-03 | 算丰科技（北京）有限公司 | Integrated circuit and its supply voltage feedback circuit and method |
| CN109902060A (en) * | 2019-01-21 | 2019-06-18 | 岱特智能科技（上海）有限公司 | Multi-path data acquiring system based on USB communication |
| CN110830010A (en) * | 2019-11-29 | 2020-02-21 | 北京无线电测量研究所 | Digital pulse signal frequency and duty ratio measuring device and system |
| CN111175636A (en) * | 2020-01-02 | 2020-05-19 | 广东科学技术职业学院 | Bonding detection circuit and bonding detection device |
| CN114252092A (en) * | 2021-12-23 | 2022-03-29 | 贵州航天控制技术有限公司 | Inertial measurement combined test system |
| CN116388760A (en) * | 2023-06-06 | 2023-07-04 | 上海泰矽微电子有限公司 | Static performance testing device and method for differential input ADC |
-
2007
- 2007-09-18 CN CNA2007100769894A patent/CN101122785A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242519A (en) * | 2015-10-21 | 2016-01-13 | 上海电控研究所 | Beidou watch card board detecting device |
| CN105242519B (en) * | 2015-10-21 | 2018-01-30 | 上海电控研究所 | Big Dipper wrist-watch board detection means |
| CN105811981A (en) * | 2016-03-09 | 2016-07-27 | 深圳市博巨兴实业发展有限公司 | Automatic test platform for high-precision ADC measurement |
| CN105811981B (en) * | 2016-03-09 | 2019-07-26 | 深圳市博巨兴实业发展有限公司 | A kind of automatic test equipment of high-precision adc measurement |
| CN108363446A (en) * | 2018-03-13 | 2018-08-03 | 算丰科技（北京）有限公司 | Integrated circuit and its supply voltage feedback circuit and method |
| CN109902060A (en) * | 2019-01-21 | 2019-06-18 | 岱特智能科技（上海）有限公司 | Multi-path data acquiring system based on USB communication |
| CN110830010A (en) * | 2019-11-29 | 2020-02-21 | 北京无线电测量研究所 | Digital pulse signal frequency and duty ratio measuring device and system |
| CN111175636A (en) * | 2020-01-02 | 2020-05-19 | 广东科学技术职业学院 | Bonding detection circuit and bonding detection device |
| CN114252092A (en) * | 2021-12-23 | 2022-03-29 | 贵州航天控制技术有限公司 | Inertial measurement combined test system |
| CN116388760A (en) * | 2023-06-06 | 2023-07-04 | 上海泰矽微电子有限公司 | Static performance testing device and method for differential input ADC |
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Open date: 20080213 |