CN204422676U - The device that the equipment power dissipation with multiple interfaces gathers - Google Patents
The device that the equipment power dissipation with multiple interfaces gathers Download PDFInfo
- Publication number
- CN204422676U CN204422676U CN201520073874.XU CN201520073874U CN204422676U CN 204422676 U CN204422676 U CN 204422676U CN 201520073874 U CN201520073874 U CN 201520073874U CN 204422676 U CN204422676 U CN 204422676U
- Authority
- CN
- China
- Prior art keywords
- interface
- amplifier circuit
- ground wire
- microcontroller
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Amplifiers (AREA)
Abstract
A kind of equipment power dissipation harvester with multiple interfaces, comprise: several interfaces be connected by sampled signal line with amplifier circuit, the oscillograph be connected with the output terminal of amplifier circuit and the microcontroller be connected with described interface by Data Control line, wherein: between interface and amplifier circuit, be provided with relay or variable resistor, by the analog signal output from interface to amplifier circuit, a GPIO port of microcontroller is connected with the grid of isolation metal-oxide-semiconductor, the GPIO port controlling isolation metal-oxide-semiconductor conducting of microcontroller and shutoff, the drain electrode of this isolation metal-oxide-semiconductor and being connected with the first ground wire, source electrode is connected with the second ground wire, the utility model (in same equipment) on one piece of circuit board can distinguish the power consumption variation information that (non-concurrent) gathers different interface devices, the change of power consumption of entirely accurate ground real time record Devices to test, this method need not destroy the physical arrangement of Devices to test itself simultaneously.
Description
Technical field
The utility model relates to a kind of technology of electrical equipment detection field, is a kind ofly possess multiple interfaces and can communicate with the Devices to test of distinct interface respectively and the device can distinguishing the power consumption variation information accurately gathered when Devices to test works.
Background technology
Effective attack method has been become at security technology area power consumption analysis, the interface shape of safety encipher equipment is also variation, such as: intelligent card interface, SPI (serial peripheral) interface, USB (USB (universal serial bus)) interface, SCI (serial communication) interface, SDIO (secure digital input and output) interface etc.Its power consumption of equipment of distinct interface form in different size, the operating voltage of its interface and working current are also different, to different interface devices carry out power consumption gather time, because useful signal size is also different, sampling resistor value to be selected is not identical yet.Conventional method is for each interface provides a set of independently sample circuit, mainly comprises the interface circuit for communicating, sampling resistor, signal amplification circuit.For this reason, be difficult to accomplish the power consumption collection of all conventional interfacing equipments to accomplish in an equipment.Because can cause the bulky of power consumption collecting device and also cost higher.
Through finding the retrieval of prior art, Chinese patent literature CN102692553A, publication date: 20120926, disclose a kind of can carry out multiple passage voltage measurement and by continuous print measurement result record datalogger product on computers.This product is connected with computing machine when using, powered by the serial line interface of computing machine or USB port, product adopts microprocessor to control, Microprocessor S3C44B0X analog switch group, the measured voltage of each passage (also can by after precision resistance dividing potential drop) is inputted by analog switch, the voltage of input carries out A/D conversion through A/D converter, microprocessor obtains the A/D transformation result of each channel voltage, and carry out data processing, then the data after process are sent to computing machine by serial line interface or USB interface, computer interface shows and stores.But the defect of this technology is: 1: to different interfaces, need different interface design of hardware and software.2: during power consumption analysis, be not only simply power consumption collection is carried out to the interface of analytical equipment, the more important thing is and will catch all slight change values of power consumption, the slight change of power consumption be carried out accurately real record, and this signal is carried out distortionless amplification.The prior art is by the group selection of Microprocessor S3C44B0X analog switch, then obtains the magnitude of voltage of different passage through A/D conversion, and this technology because the existence of analog switch, can bring extra interference signal, can not the time real power consumption features of actual response Devices to test.
Chinese patent literature CN101615153, publication date 20091230, disclose a kind of USB interface device for testing power, comprise the first and second USB interface and analogue means, first USB interface is for connecting circuit board under test, secondary USB interface is for connecting USB device, analogue means comprises the first voltage stabilizer, first resistance, second resistance and pull-up resistor, the first described voltage stabilizer comprises input end, output terminal and adjustable side, the signal pins correspondence of the first USB interface connects the signal pins of secondary USB interface, the voltage end of the first USB interface connects the voltage end of secondary USB interface and the input end of the first voltage stabilizer respectively, first resistance is connected between the output terminal of the first voltage stabilizer and the adjustable side of the first voltage stabilizer, adjustable side second resistance eutral grounding of voltage stabilizer, the output terminal of voltage stabilizer is through pull-up resistor ground connection.Described USB interface device for testing power test is accurate and convenient.But the defect of this technology is: 1: the change of power consumption of real time reaction USB interface equipment in communication process.2: other signal can be introduced, affect the analysis to power consumption waveform.3: real change of power consumption when can not test other interfacing equipment.
Utility model content
The utility model is for prior art above shortcomings, and the device that a kind of equipment power dissipation with multiple interfaces of utility model gathers, for the power consumption analysis at security technology area, change of power consumption during device under test work carries out Real-time Collection and record.Utilize microprocessor can realize respectively with intelligent card interface device, SPI interfacing equipment, SCI interfacing equipment communicates with SDIO interfacing equipment, share a set of signal amplification circuit, by variable resistor or high frequency relay, the sampling resistor of the different resistance of the equipment choice for distinct interface, can realize on one piece of circuit board (in same equipment) and gather the power consumption variation information of different interface devices respectively, the change of power consumption of entirely accurate ground real time record Devices to test.This method need not destroy the structure of Devices to test itself, can reduce the cost of testing apparatus, and power consumption variation information when can effectively gather and record the work of different interface devices.
The utility model is achieved through the following technical solutions:
The utility model comprises: be arranged at several interfaces be connected by sampled signal line with amplifier circuit on one piece of circuit board, the oscillograph be connected with the output terminal of amplifier circuit and the microcontroller be connected with described interface by Data Control line, wherein: between interface and amplifier circuit, be provided with relay or variable resistor, export the analog signal information from interface to amplifier circuit, a GPIO port of microcontroller is connected with the grid of isolation metal-oxide-semiconductor, the GPIO port controlling isolation metal-oxide-semiconductor conducting of microcontroller and shutoff, the drain electrode of this isolation metal-oxide-semiconductor and being connected with the first ground wire, source electrode is connected with the second ground wire.
Described interface is used for the power consumption information during work of Real-time Collection Devices to test, include but not limited to: intelligent card interface (7816 interface), SPI (serial peripheral) interface, USB (USB (universal serial bus)) interface, SCI (serial communication) interface and/or SDIO (secure digital input and output) interface.
Described Devices to test includes but not limited to: at the power consumption gather and analysis equipment of security technology area.
The second described ground wire is used for being connected with external power supply, the first ground wire that itself and sampling resistor are connected with amplifier circuit be not directly connected, and realize isolation by isolation metal-oxide-semiconductor, described microcontroller controls according to the grid of the difference of type of detection to isolation metal-oxide-semiconductor, makes the drain electrode isolating metal-oxide-semiconductor be communicated with source electrode or cut off.
Technique effect
Compared with prior art, the utility model is communicated with the Devices to test of distinct interface respectively by micro controller in set of system, reasonably utilizes the sampling resistor that (or selection) is different, carries out real time power consumption collection to different interface devices; By same set of amplifying circuit, sampled signal is amplified and exports.This method can effectively reduce the production cost of power consumption collector, reduces the volume of power consumption collector, and real collection when supporting the power consumption of multiple different interface devices, record power consumption variation information during Devices to test work accurately.
Accompanying drawing explanation
Fig. 1 is the utility model structure 1 schematic diagram.
Fig. 2 is the utility model structure 2 schematic diagram.
Fig. 3 is the utility model embodiment 1 embody rule schematic diagram.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1
As shown in figures 1 and 3, the present embodiment comprises: the equipment power dissipation harvester with multiple interfaces, comprise: be arranged at several interfaces be connected by sampled signal line with amplifier circuit on one piece of circuit board, the oscillograph be connected with the output terminal of amplifier circuit and the microcontroller be connected with described interface by Data Control line, wherein: between interface and amplifier circuit, be provided with relay, export the analog signal information from interface to amplifier circuit, a GPIO port of microcontroller is connected with the grid of isolation metal-oxide-semiconductor, the GPIO port controlling isolation metal-oxide-semiconductor conducting of microcontroller and shutoff, the drain electrode of this isolation metal-oxide-semiconductor and being connected with the first ground wire, source electrode is connected with the second ground wire.
Described interface is used for the power consumption information during work of Real-time Collection Devices to test, include but not limited to: intelligent card interface (7816 interface), SPI (serial peripheral) interface, USB (USB (universal serial bus)) interface, SCI (serial communication) interface and/or SDIO (secure digital input and output) interface.
Described Devices to test includes but not limited to: at the power consumption gather and analysis equipment of security technology area.
Be provided with external power supply in described equipment power dissipation harvester, the shell of this external power supply is connected with the second ground wire.
The shell of described amplifier circuit is connected with the first ground wire.
Described microcontroller shell be connected with the second ground wire.
The earth terminal of described interface is connected with the first ground wire each via a sampling resistor, and microcontroller is connected with relay the amplifier circuit selecting distinct interface with control line respectively by data line.
Described relay is high frequency relay, as below bandwidth 1GHz, contacts electric cloudy below 100m Ω, as G6K ?2F0RF.
Described sampling resistor is precision resistance, and when described interface is USB interface, sampling resistor value is 0.2 ~ 0.8 Ω, and when described interface is 7816 interface, sampling resistor is 5 Ω.
Also can not adopt relay between interface and amplifier circuit and replace with variable resistor, exporting the analog signal information from interface to amplifier circuit, this variable-resistance earth terminal is connected with the first ground wire.Such advantage is: relative to use relay, less to the decay of each frequency range of original signal, but on market, the variable resistor of little value like this is difficult to buy, and be not subject to automatic control, for this application, change resistance value by manual mode, inconvenient to use.
Because its power consumption size of equipment of distinct interface has very large difference, and its gain and biasing range have been fixed in the amplifying circuit of power consumption collector sampling module, if the apparatus output signal distortion therefore using identical sampling resistor that power consumption may be caused larger for the equipment of distinct interface (in any case regulate gain and biased all can distortion), such as: 7816 (smart card) interfacing equipment its sampling resistor about 5 Ω, the amplifying circuit of power consumption collector can ensure that under the sampling resistor of 5 Ω the output power loss signal of the equipment of 7816 interfaces is undistorted, if and now equipment is changed to the equipment (such as USBKEY (USB (universal serial bus) password dish)) of USB interface, its power consumption will much larger than 7816 interfacing equipments, and the power loss signal distortion that the constant words of sampling resistor just may cause power consumption collector to export (is about to sampling gain-adjusted minimum, bias-adjusted is minimum also likely can distortion), therefore the sampling resistor of USBKEY must be reduced, so just can ensure that the output signal of amplifying circuit is undistorted.If power consumption collector is integrated with 7816 interfaces and USB interface simultaneously, the even more equipment of multiplex roles (SPI, SCI, SDIO etc.), be necessary for the sampling resistor that the Equipments Setting of often kind of interface is different, and need to be equipped with corresponding selection circuit such as relay or employing variable resistor to different sampling resistors.Meanwhile, because this method mainly gathers the real time power consumption change information of Devices to test, change of power consumption during Devices to test work to be reacted really and accurately, other signal can not be introduced, so require very high to the grounding of circuit.
As shown in Figure 3, above-described embodiment specifically comprises the following steps:
1) utilize microcontroller hardware pin to connect different interfaces, this example mainly achieves intelligent card interface (7816) interface and USB (USBKEY) interface, realizes microcontroller and communicates with Devices to test.Simultaneously microcontroller can with compunlcation.
2) the sampling resistor use resistance of smart card (7816) interface is the precision resistance of 5 Ω, and the sampling resistor use resistance of USB (USBKEY) interface is the precision resistance of 0.3 Ω.
3) microprocessor controls high frequency relay (as: G6K ?2F0RF), for different sampling resistors selected by different interfacing equipments.
4) ground wire of whole equipment is divided into two ground, and first ground wire is the ground wire of external power supply, and second ground wire is the ground wire of amplifying circuit, and two ground wires directly do not connect.
5) two ground is connected by the drain electrode of metal-oxide-semiconductor, source electrode, the grid of microprocessor controls metal-oxide-semiconductor, and when gathering the power consumption information of smart card (7816) interfacing equipment, the drain electrode of metal-oxide-semiconductor and source electrode turn off, and two ground wires are isolated; When gathering the power consumption information of USB (usbkey) interfacing equipment, the drain electrode of metal-oxide-semiconductor and source conduction, make two ground be connected.
6) system shares a set of signal amplification circuit.
Claims (8)
1. one kind has the equipment power dissipation harvester of multiple interfaces, it is characterized in that, comprise: be arranged at several interfaces be connected by sampled signal line with amplifier circuit on one piece of circuit board, the oscillograph be connected with the output terminal of amplifier circuit and the microcontroller be connected with described interface by Data Control line, wherein: between interface and amplifier circuit, be provided with relay or variable resistor, by the analog signal output from interface to amplifier circuit, a GPIO port of microcontroller is connected with the grid of isolation metal-oxide-semiconductor, the GPIO port controlling isolation metal-oxide-semiconductor conducting of microcontroller and shutoff, the drain electrode of this isolation metal-oxide-semiconductor and being connected with the first ground wire, source electrode is connected with the second ground wire,
The second described ground wire is used for being connected with external power supply, the first ground wire that itself and sampling resistor are connected with amplifier circuit be not directly connected, and realize isolation by isolation metal-oxide-semiconductor, described microcontroller controls according to the grid of the difference of type of detection to isolation metal-oxide-semiconductor, makes the drain electrode isolating metal-oxide-semiconductor be communicated with source electrode or cut off.
2. the equipment power dissipation harvester with multiple interfaces according to claim 1, it is characterized in that, described interface is used for the power consumption information during work of Real-time Collection Devices to test, comprising: intelligent card interface, SPI interface, USB interface, SCI interface and/or SDIO interface.
3. the equipment power dissipation harvester with multiple interfaces according to claim 1, is characterized in that, is provided with external power supply in described equipment power dissipation harvester, and the shell of this external power supply is connected with the second ground wire;
The shell of described amplifier circuit is connected with the first ground wire;
Described microcontroller shell be connected with the second ground wire.
4. the equipment power dissipation harvester with multiple interfaces according to claim 1, it is characterized in that, when being relay between interface and amplifier circuit, the earth terminal of described interface is connected with the first ground wire each via a sampling resistor, and microcontroller is connected with relay the amplifier circuit selecting distinct interface with control line respectively by data line.
5. the equipment power dissipation harvester with multiple interfaces according to claim 1, is characterized in that, described relay is high frequency relay.
6. there is the equipment power dissipation harvester of multiple interfaces according to claim 1 or 5, it is characterized in that, below the bandwidth 1GHz of described relay, contact electric cloudy below 100m Ω.
7. the equipment power dissipation harvester with multiple interfaces according to claim 1 and 2, it is characterized in that, described sampling resistor is precision resistance, when described interface is USB interface, sampling resistor value is 0.2 ~ 0.8 Ω, and when described interface is 7816 interface, sampling resistor is 5 Ω.
8. the equipment power dissipation harvester with multiple interfaces according to claim 1, is characterized in that, when being variable resistor between interface and amplifier circuit, this variable-resistance earth terminal is connected with the first ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073874.XU CN204422676U (en) | 2015-02-03 | 2015-02-03 | The device that the equipment power dissipation with multiple interfaces gathers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073874.XU CN204422676U (en) | 2015-02-03 | 2015-02-03 | The device that the equipment power dissipation with multiple interfaces gathers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422676U true CN204422676U (en) | 2015-06-24 |
Family
ID=53473032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520073874.XU Active CN204422676U (en) | 2015-02-03 | 2015-02-03 | The device that the equipment power dissipation with multiple interfaces gathers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569700A (en) * | 2015-02-03 | 2015-04-29 | 上海观源信息科技有限公司 | Equipment power consumption acquiring device with various interfaces |
-
2015
- 2015-02-03 CN CN201520073874.XU patent/CN204422676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569700A (en) * | 2015-02-03 | 2015-04-29 | 上海观源信息科技有限公司 | Equipment power consumption acquiring device with various interfaces |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204832351U (en) | Small resistance and insulation resistance's integrated tester | |
| CN104569700A (en) | Equipment power consumption acquiring device with various interfaces | |
| CN111142008B (en) | Circuit board power parameter testing system and method | |
| CN206818799U (en) | A kind of multichannel precision micro resistance test system | |
| CN205210175U (en) | Data acquisition equipment | |
| CN204422676U (en) | The device that the equipment power dissipation with multiple interfaces gathers | |
| CN107192468A (en) | A kind of high acquisition rate temp measuring system of multichannel | |
| CN204389583U (en) | A kind of grounding net of transformer substation three-dimensional digital monitoring data collector | |
| CN211878121U (en) | Circuit board power parameter testing equipment and system | |
| CN206161738U (en) | Non -contact multichannel ground resistance on -line monitoring device | |
| CN206223724U (en) | A kind of test system of blood sugar instrument | |
| CN104777400A (en) | Three-dimensional digitalized monitoring device for substation grounding grid and evaluation method | |
| CN203812008U (en) | Analog signal collector | |
| CN204287285U (en) | Capture card measured by a kind of multimeter | |
| CN108061845A (en) | A kind of GIS partial discharge data acquisition device | |
| CN104079922A (en) | Video signal testing device | |
| CN103439584B (en) | Capacitor with multiple electrode plates on-line measurement system based on electric impedance analyzer | |
| CN203122391U (en) | Electrocardiographic lead wire with electrocardiographic signal processing module and mobile terminal | |
| CN207037008U (en) | Insulating check instrument and insulating check system | |
| CN212845584U (en) | Low-cost analog signal acquisition circuit | |
| CN206313997U (en) | Display device board exports audio detection device | |
| CN203396846U (en) | Multi-pole plate capacitance on-line measuring system based on impedance analyzer | |
| CN203705058U (en) | Temperature signal acquisition device | |
| CN105242106B (en) | The device and method that plurality of voltages can be sampled and detected | |
| CN212009342U (en) | Small-signal continuous waveform data acquisition module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |