CN104569599B - A kind of electronic tag resistance on-line checking circuit - Google Patents
A kind of electronic tag resistance on-line checking circuit Download PDFInfo
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- CN104569599B CN104569599B CN201510013830.2A CN201510013830A CN104569599B CN 104569599 B CN104569599 B CN 104569599B CN 201510013830 A CN201510013830 A CN 201510013830A CN 104569599 B CN104569599 B CN 104569599B
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Abstract
Downloaded and serial communication modular, input/output module, test pencil detection module, digital-control constant-flow source module, instrument amplification module, run indicator module, alarm module and controller the invention discloses a kind of electronic tag resistance on-line checking circuit, including power management module, BSL.Each module uses existing mature technology, wherein power management module includes the 5V voltage conversion circuits using LM1085 as core, the 3.3V voltage conversion circuits by core of AMS1117 and the 5V voltage reversing circuits by core of LMC7660, small volume of the present invention, precision is high, and cost is low；Possesses the function such as data sampling and processing and storage.
Description
Technical field
The invention belongs to technical field of RFID, and in particular to a kind of electronic tag resistance on-line checking circuit.
Background technology
Electronic label technology is that one risen from nineteen nineties utilizes contactless pair of radiofrequency signal progress
To communication, automatic identification destination object and the wireless communication technology for obtaining relevant information data.Electronic tag is as in Internet of Things
Most widely used, business model most ripe technology, is listed in one of 21 century most promising important industry and application technology.
According to statistics, 2008, China's electronic tag industrial market scale was up to 65.8 hundred million yuan.2009, market scale was of about 7,000,000,000 yuan, together
Than increasing by 20.6%.2010, China's electronic tag industrial market scale reached 121.5 hundred million yuan, electronic tag industry in 2011
Market scale will be more than 15,700,000,000 yuan.On November 23rd, 2012, the Ministry of Industry and Information Technology reveals, and electronic tag market is at home
Annual increasing degree is all 45% ~ 50% within continuous 3 years.At present, China's electronic tag industry size occupies third place in the world.With warp
The appearance of the fast development support policy related to country of Ji, China's electronic tag industry will welcome great development.
But, with the extension of industry, new entrant rolls up, and enterprise constantly expands production capacity in the industry, accelerates industry whole
Close and technology upgrading, cause the competition in industry.Meanwhile, the pursuit more and more higher of client's printing product quality should
Ask high-quality, quality predictability is required again, and be concerned about control device of the manufacturing enterprise to quality.These matter improved constantly
Amount is required so that the quality-control cost more and more higher of label printing enterprise, percent defective also rises therewith, causes label printing enterprise
The profit margin of industry diminishes.For institute of label printing enterprise facing challenges, the label printing enterprise for having prediction to realize in the industry opens
Begin to attempt to solve the problems, such as printing quality control using automation equipment.The detection of electronic tag printing quality is improved to a certain degree
Product quality, reduces the production cost of manufacturing enterprise.But during electronic tag subsequent production（Such as get through hole, play decoding
Point, compound etc.）The change of caused tag parameter so that the finished product percent defective increase of label, increases being produced into for enterprise
This.
Radio-frequency antenna is used as a very important part in radio frequency products, production and application of its resistance for electronic tag
Key effect is all played, but because its resistance is very small, existing measuring apparatus or expensive, or measurement accuracy is not enough,
So that the development of wireless radio-frequency is influenceed by certain.In order to improve the core competitiveness of enterprise, client is to electronics for enhancing
The satisfaction of label, some enterprises start completed electronic label quality parameter (such as dischargeable capacity, frequency and Q values) to detect and made
For the key link of quality control, and applied in produce reality.Domestic production producer is basic to the performance detection of electronic tag
Still artificial detection-phase is rested on, exists that accuracy of detection is poor, the gentle detection efficiency of Automated water is low, be difficult to label
The shortcomings of statistics of the assessment of mass parameter and quantity.There are many manufacturers, directly examined according to tag read system to entering
The label for surveying region occurs acousto-optic reaction and carries out the good and bad judgement of product, and this mode is cumbersome, efficiency is low, uncomfortable
The enterprise of label should be mass produced.
The content of the invention
The present invention be directed to electronic tag after print quality detection, in order to reduce percent defective, and a kind of electronics proposed
The resistance of label and excessively resistor bridge line Measurement Technique.
A kind of electronic tag resistance on-line checking circuit includes power management module, BSL and downloaded and serial communication modular, defeated
Enter output module, test pencil detection module, digital-control constant-flow source module, instrument amplification module, run indicator module, alarm module and
Controller.Wherein power management module is including the 5V voltage conversion circuits using LM1085 as core, using AMS1117 as core
3.3V voltage conversion circuits and the -5V voltage reversing circuits by core of LMC7660.Digital-control constant-flow source module include DA circuits and
Amplifier and MOS circuits.5V voltage conversion circuits by core of LM1085 are BSL downloads and serial communication modular, with AMS1117
For in the 3.3V voltage conversion circuits of the core, -5V voltage reversing circuits by core of LMC7660, digital-control constant-flow source module
DA circuits, instrument amplification module, run indicator module and alarm module provide 5V voltages.Using AMS1117 as the 3.3V of core
Voltage conversion circuit is input/output module, test pencil detection module and controller provide 3.3V voltages.Using LMC7660 as core
- 5V voltage reversing circuits be that the amplifier in digital-control constant-flow source module and MOS circuits and instrument amplification module provide -5V voltages.
Controller sequentially enters calibration mode, measurement range selection pattern, measurement pattern according to key value is read in, and in calibration mode, control
Device processed remembers the resistance of test pencil, during measurement pattern, and result measured directly is subtracted into calibration value, you can obtain tested electronic tag
Resistance, and by resistance include on LCD and host computer.Each unit is selected to be tested electronic tag successively during measurement range selection pattern
The range of resistance, continuous N number of label outranges, and alarms and shuts down, and run indicator is changed into red from normal green.Control
The tested electronic tag resistance that device collection processed is returned is passed on host computer by serial ports after being computed and shown, and calculates this batch
The acceptance rate of product.
The described 5V voltage conversion circuits using LM1085 as core, including four ROHSs, two polar capacitors and
Voltage conversion chip U2, voltage conversion chip U2 models LM1085；
Described voltage conversion chip U2 VIN pin and the first ROHS C6 one end, the one of the second ROHS C7
End, the first polar capacitor C10 positive pole connect and connect+9V power supplys, Vout ends and the 3rd ROHS C8 one end, the 4th only stone
Electric capacity C9 one end, the second polar capacitor C11 positive pole connect and are used as 5V voltage output ends, GND pin and the first ROHS
The C6 other end, the second ROHS C7 other end, the first polar capacitor C10 negative pole, the 3rd ROHS C8 it is another
End, the 4th ROHS C9 other end, the second polar capacitor C11 negative pole are connected and are grounded；
The described 3.3V voltage conversion circuits using AMS1117 as core include two ROHSs, two polar capacitors
With voltage conversion chip U7, voltage conversion chip U7 models AMS1117；
Described voltage conversion chip U7 VIN pin and the 3rd polar capacitor C17 positive pole, the 5th ROHS C15
One end connects and connects+5V power supplys, Vout ends and quadripolarity electric capacity C18 positive pole, the 6th ROHS C16 one end and conduct
3.3V voltage output ends, GND pin and the 3rd polar capacitor C17 negative pole, the 5th ROHS C15 other ends, the 3rd polarity electricity
Negative pole, the quadripolarity electric capacity C18 other end for holding C17 are connected and are grounded；
- 5V voltage reversing circuits by core of LMC7660 include voltage conversion chip U6 and two polar capacitors, voltage
Conversion chip U6 model LMC7660IN；
Described voltage conversion chip U6 3 pin ground connection, 2 pin are connected with the 5th polar capacitor C14 positive pole, 4 pin and the
Five polar capacitor C14 negative pole connection, 8 pin connect+5V power supplys, and 5 pin are connected and conduct -5V with the 6th polar capacitor C19 negative pole
Voltage output end, the 6th polar capacitor C19 plus earth.
Described BSL is downloaded and serial communication modular includes the second connector P2, the 3rd connector P3, serial communication conversion
Chip U1, crystal oscillator Y1, three electric capacity and three resistance；The model Header 5X2 of the second described connector P2, the 3rd connects
Plug-in unit P3 model USB；
Described serial communication switch chip U1 1 pin is connected with the second connector P2 8 pin, 2 pin and the second connector
P2 3 pin connection, 3 pin are connected with the second connector P2 1 pin, and 4 pin meet the 7 pin company of 3.3V power supplys, 5 pin and the second connector P2
Connect, 7 pin ground connection, 15 pin are connected with second resistance R5 one end, and 16 pin are connected with first resistor R4 one end, 17 pin and the 3rd electricity
R6 one end, the 9th ROHS C3 one end connection is hindered, 18 pin are connected and are grounded with the 9th ROHS C3 other end, 20
Pin connects+5V power supplys, 21 pin, 22 pin, 23 pin, 25 pin and 26 pin ground connection, 27 pin and crystal oscillator Y1 one end, the 8th ROHS C2
One end is connected, and 28 pin are connected with the crystal oscillator Y1 other end, the 7th ROHS C1 one end, 6 pin, 8 pin, 9 pin, 10 pin, 11 pin,
12 pin, 13 pin, 14 pin, 19 pin and 24 foot stools are empty, and the first resistor R4 other end is connected with the 3rd connector P3 3 pin D-, the
The two resistance R5 other end is connected with the 3rd resistor R6 other end, the 3rd connector P3 2 pin D+；The 4 of 3rd connector P3
Pin connects+5V power supplys, the 3rd connector P3 1 pin ground connection；The 7th ROHS C1 other end is another with the 8th ROHS C2's
One end connects and is grounded；Second connector P2 5 pin are connected with controller chip U5 13 pin, and 9 pin are with controller chip U5's
32 pin are connected, and 2 pin are connected with controller chip U5 57 pin, and 4 pin are connected with controller chip U5 58 pin, 6 pin and controller
Chip U5 22 pin connection, 10 pin are connected with controller chip U5 35 pin；
Input/output module includes the 4th resistance R7, the 5th resistance R8, the 6th resistance R9, the 7th resistance R20, first switch
K1, second switch K2, the 3rd switch K3, the 4th switch K4 and the first connector P1, the first connector P1 model
LCD5110；
4th resistance R7 one end and the 5th resistance R8 one end, the 6th resistance R9 one end, the 7th resistance R20 one end
Connect and connect 3.3V power supplys, the 4th resistance R7 other end is connected with one end of controller chip U5 12 pin, the 4th switch K4,
The 5th resistance R8 other end is connected with one end of controller chip U5 13 pin, the 3rd switch K3, and the 6th resistance R9's is another
End is connected with controller chip U5 14 pin, second switch K2 one end, the 7th resistance the R20 other end and controller chip U5
15 pin, first switch K1 one end connection, the first switch K1 other end and the second switch K2 other end, the 3rd switch K3
The other end, the 4th switch K4 other end connect and is grounded, the 19 pin company of the first connector P1 1 pin and controller chip U5
Connect, 2 pin are connected with controller chip U5 20 pin, 1 pin is connected with controller chip U5 21 pin, 1 pin and controller chip U5
The connection of 22 pin, 1 pin is connected with controller chip U5 23 pin, and 6 pin are connected with 7 pin and connect 3.3V power supplys, and 8 pin are grounded；
Test pencil detection module includes two resistance, a light emitting diode and a phototriode,
8th resistance R1 one end is connected with the first light emitting diode D1 anode, the first light emitting diode D1 negative electrode with
Phototriode Q1 emitter stage is connected and is grounded, and the 8th resistance R1 other end is connected and connect with the 9th resistance R2 one end
3.3V power supplys, the 9th resistance R2 other end is connected with phototriode Q1 colelctor electrode and connected with controller chip U5 42 pin
Connect,
Digital-control constant-flow source module includes digital-control constant-flow source module DA circuits and digital-control constant-flow source module amplifier and MOS circuits；
Digital-control constant-flow source module DA circuits include analog-digital chip U11, two resistance, two ROHSs, a poles
Property electric capacity, rheostat REF1 and a voltage-regulator diode；Analog-digital chip U11 model TCL5615；
Analog-digital chip U11 1 pin connects controller chip U5 36 pin, and 2 pin connect controller chip U5 35 pin, 3 pin
Controller chip U5 35 pin are connect, 5 pin connect the 11st resistance R23 one end, and 6 pin connect rheostat REF1 movable end, 8 pin and
Ten ROHS C26 one end, the 7th polar capacitor C22 positive pole, the tenth resistance R15 one end connects and connects+5V power supplys, and 4
Foot stool is empty, and the tenth ROHS C26 other end is connected and is grounded with the 7th polar capacitor C22 negative pole；11st resistance R23
Other end ground connection, the tenth resistance R15 other end and voltage-regulator diode U8 anode, voltage-regulator diode U8 output end, become
Hinder a device REF1 fixing end, the R24 of the 11st ROHS one end connection, voltage-regulator diode U8 negative electrode and rheostat
REF1 another fixing end, the R24 of the 11st ROHS other end are connected and are grounded；
Digital-control constant-flow source module amplifier and MOS circuits include operation amplifier chip U9, polar capacitor C23, one solely
Stone electric capacity C27, the 12nd resistance R18, the 13rd resistance RS1 and a mos pipes Q3；Operation amplifier chip U9 model
OP07；
Operation amplifier chip U9 1 pin, 5 pin, 8 foot stools are empty, and 2 pin are connected with the 13rd resistance RS1 one end, 3 pin and number
Mould conversion chip U11 7 pin connection, 4 pin connect -5V power supplys, and 6 pin are connected with the 12nd resistance R12 one end, 7 pin and the 12nd
ROHS C12 one end, the positive pole of the 8th polar capacitor connect and connect+9V power supplys, and the 12nd ROHS C12's is another
End, the negative pole ground connection of the 8th polar capacitor, the 12nd resistance R12 other end are connected with mos pipes Q3 grid, mos pipes Q3's
Drain electrode connects+9V power supplys；
Instrument amplification module includes differential amplifier chip U10, six resistance, five ROHSs, a polar capacitors；
Described differential amplifier chip U10 model INA128；
Differential amplifier chip U10 1 pin is connected with the 16th resistance R16 one end, 2 pin and the 14th resistance R19's
One end, the 13rd ROHS C29 one end connection, 3 pin and the 14th ROHS C30 one end, the 15th resistance R20
One end is connected, and 4 pin connect -5V power supplys, and 5 pin ground connection, 6 pin are connected with the 18th resistance R21 one end, 7 pin and the 15th only stone electricity
Hold C28 one end, the 9th polar capacitor C25 anode to connect and connect+5V power supplys, 8 pin and the 17th resistance R17 one end connect
Connect, the 16th resistance R16 other end is connected with the 17th resistance R17 other end, the 14th resistance the R19 other end and fortune
Amplification chip U9 2 pin connection is calculated, the 15th resistance R20 other end is connected with mos pipes Q3 source electrode, the 13rd ROHS
The C29 other end is connected and is grounded with the 14th ROHS C30 other end, the 18th resistance R21 other end and the tenth
Nine resistance R22 one end, the 16th ROHS C31 one end connection, the 16th ROHS C31 other end and the 17th
ROHS C32 one end connects and is grounded, the 19th resistance R22 other end and the 17th ROHS C32 other end
And connect controller chip U5 59 pin；The 15th ROHS C28 other end is connected simultaneously with the 9th polar capacitor C25 negative electrode
Ground connection；
Run indicator module includes the first triode Q4, the second light emitting diode D3, the 3rd light emitting diode D4, second
Triode Q5, the 20th resistance R24 and the 21st resistance R26;
First triode Q4 base stage is connected with the second triode Q5 base stage and connects controller chip U5 40 pin, first
Triode Q4 colelctor electrode is connected and is grounded with the 3rd light emitting diode D4 negative electrode, the first triode Q4 emitter stage and second
Light emitting diode D3 negative electrode connection, the second light emitting diode D3 anode is connected with the 20th resistance R24 one end, and the 20th
The resistance R24 other end is connected with the 21st resistance R26 one end and connects+5V power supplys, the second triode Q5 emitter stage with
3rd light emitting diode D4 anode connection, the second triode Q5 colelctor electrode is connected with the 21st resistance R26 other end；
Alarm module includes the 22nd resistance R11, the 3rd triode Q2 and buzzer；The one of 22nd resistance R11
End is connected with controller chip U5 41 pin, and the 22nd resistance R11 other end is connected with the 3rd triode Q2 base stage, the
Three triode Q2 grounded emitter, the 3rd triode Q2 colelctor electrode and one end of buzzer are connected, the other end of buzzer
Connect+5V power supplys；
Controller module includes controller chip U5, four ROHSs and two crystal oscillators；
Controller chip U5 1 pin connects with the 18th ROHS C12 one end, the 19th ROHS C13 one end
Connect and connect 3.3V power supplys, the 18th ROHS C12 other end is connected and connect with the 19th ROHS C13 other end
Ground；Controller chip U5 8 pin are connected with the second crystal oscillator Y2 one end, and 9 pin are connected with the second crystal oscillator Y2 other end, 53 pin with
The one of the Y3 of 3rd crystal oscillator one end, the 20th ROHS C20 one end connection, 52 pin and the 21st ROHS C21
End, the Y3 of the 3rd crystal oscillator other end connection, the 21st ROHS C21 other end and the 20th ROHS C20's
The other end is connected and is grounded；Controller chip U5 62 pin are connected and are grounded with 63 pin, and 64 pin connect 3.3V power supplys；Controller chip
The pin that U5 is not mentioned hereinbefore is all maked somebody a mere figurehead.
Beneficial effects of the present invention：The device volume is small, and precision is high, and cost is low；Possess data sampling and processing and storage etc.
Function；The quality of on-line checking electronic tag can be realized；Data processing is carried out by upper computer software；According to obtained data
The yields of this batch of product can be calculated；The upper limit of each passage institute mark label resistance is selected by button；There is behaviour simultaneously
Make the advantages of simple, precision is high.
Brief description of the drawings：
Fig. 1 is hardware architecture diagram of the invention；
Fig. 2 is 5V voltage conversion circuit schematic diagrams of the invention；
Fig. 3 is 3.3V voltage conversion circuit schematic diagrams of the invention；
Fig. 4 is -5V voltage reversing circuit schematic diagrams of the invention；
Fig. 5 is downloaded and serial communication modular circuit theory diagrams for the BSL of the present invention；
Fig. 6 is input/output module circuit theory diagrams of the invention；
Fig. 7 is test pencil detection module circuit theory diagrams of the invention；
Fig. 8 is digital-control constant-flow source module DA circuit theory diagrams of the invention；
Fig. 9 is digital-control constant-flow source module amplifier and MOS circuit theory diagrams of the invention；
Figure 10 is instrument amplification module circuit theory diagrams of the invention；
Figure 11 is run indicator modular circuit schematic diagram of the invention；
Figure 12 is alarm module circuitry schematic diagram of the invention；
Figure 13 is control module circuit theory diagrams of the invention.
Embodiment
Specific description is done to modules in the present invention below in conjunction with the accompanying drawings.
Such as Fig. 1, a kind of electronic tag resistance on-line checking circuit of the invention includes power management module 1, BSL and downloads and go here and there
Port communications module 2, input/output module 3, test pencil detection module 4, digital-control constant-flow source module 5, instrument amplification module 6, operation refer to
Show lamp module 7, alarm module 8 and controller 9.Each module use existing mature technology, wherein power management module 1 include with
LM1085 be core 5V voltage conversion circuits 1-1, the 3.3V voltage conversion circuits 1-2 by core of AMS1117 and with
LMC7660 is the -5V voltage reversing circuits 1-3 of core.Digital-control constant-flow source module 5 includes DA circuits 5-1 and amplifier and MOS circuits
5-2.5V voltage conversion circuits 1-1 by core of LM1085 is BSL downloads and serial communication modular 2, using AMS1117 as core
3.3V voltage conversion circuits 1-2, -5V voltage reversing circuits the 1-3 by core of LMC7660, in digital-control constant-flow source module 5
DA circuits 5-1, instrument amplification module 6, run indicator module 7 and alarm module 8 provide 5V voltages.Using AMS1117 as core
3.3V voltage conversion circuits 1-2 be input/output module 3, test pencil detection module 4 and controller 9 3.3V voltages are provided.With
LMC7660 is that -5V voltage reversing circuits the 1-3 of core is that amplifier and MOS circuits 5-2 and instrument in digital-control constant-flow source module is put
Big module 6 provides -5V voltages.Controller 9 sequentially enters calibration mode, measurement range selection pattern, measurement mould according to key value is read in
Formula, and in calibration mode, controller remembers the resistance of test pencil, during measurement pattern, and result measured directly is subtracted into calibration value,
The resistance of tested electronic tag can be obtained, and resistance is included on LCD and host computer.Selected successively during measurement range selection pattern
The range that each unit is tested electronic tag resistance is selected, continuous N number of label outranges, alarms and shut down, and run indicator is by just
Normal green is changed into red.The tested electronic tag resistance that controller collection is returned passes to host computer after being computed by serial ports
Upper display, and calculate the acceptance rate of this batch of product.
As shown in Fig. 2 the 5V voltage conversion circuit 1-1 using LM1085 as core, including four ROHSs, two
Individual polar capacitor and voltage conversion chip U2, voltage conversion chip U2 models LM1085；
Described voltage conversion chip U2 VIN pin and the first ROHS C6 one end, the one of the second ROHS C7
End, the first polar capacitor C10 positive pole connect and connect+9V power supplys, Vout ends and the 3rd ROHS C8 one end, the 4th only stone
Electric capacity C9 one end, the second polar capacitor C11 positive pole connect and are used as 5V voltage output ends, GND pin and the first ROHS
The C6 other end, the second ROHS C7 other end, the first polar capacitor C10 negative pole, the 3rd ROHS C8 it is another
End, the 4th ROHS C9 other end, the second polar capacitor C11 negative pole are connected and are grounded；
As shown in figure 3, the 3.3V voltage conversion circuits 1-2 using AMS1117 as core includes two only stones
Electric capacity, two polar capacitors and voltage conversion chip U7, voltage conversion chip U7 models AMS1117；
Described voltage conversion chip U7 VIN pin and the 3rd polar capacitor C17 positive pole, the 5th ROHS C15
One end connects and connects+5V power supplys, Vout ends and quadripolarity electric capacity C18 positive pole, the 6th ROHS C16 one end and conduct
3.3V voltage output ends, GND pin and the 3rd polar capacitor C17 negative pole, the 5th ROHS C15 other ends, the 3rd polarity electricity
Negative pole, the quadripolarity electric capacity C18 other end for holding C17 are connected and are grounded；
As shown in figure 4, -5V voltage reversing circuits the 1-3 by core of LMC7660 includes voltage conversion chip U6 and two
Polar capacitor, voltage conversion chip U6 model LMC7660IN；
Described voltage conversion chip U6 3 pin ground connection, 2 pin are connected with the 5th polar capacitor C14 positive pole, 4 pin and the
Five polar capacitor C14 negative pole connection, 8 pin connect+5V power supplys, and 5 pin are connected and conduct -5V with the 6th polar capacitor C19 negative pole
Voltage output end, the 6th polar capacitor C19 plus earth.
As shown in figure 5, described BSL is downloaded and serial communication modular includes the second connector P2, the 3rd connector P3, string
Port communications conversion chip U1, crystal oscillator Y1, three electric capacity and three resistance；The model Header of the second described connector P2
5X2, the 3rd connector P3 model USB；
Described serial communication switch chip U1 1 pin is connected with the second connector P2 8 pin, 2 pin and the second connector
P2 3 pin connection, 3 pin are connected with the second connector P2 1 pin, and 4 pin meet the 7 pin company of 3.3V power supplys, 5 pin and the second connector P2
Connect, 7 pin ground connection, 15 pin are connected with second resistance R5 one end, and 16 pin are connected with first resistor R4 one end, 17 pin and the 3rd electricity
R6 one end, the 9th ROHS C3 one end connection is hindered, 18 pin are connected and are grounded with the 9th ROHS C3 other end, 20
Pin connects+5V power supplys, 21 pin, 22 pin, 23 pin, 25 pin and 26 pin ground connection, 27 pin and crystal oscillator Y1 one end, the 8th ROHS C2
One end is connected, and 28 pin are connected with the crystal oscillator Y1 other end, the 7th ROHS C1 one end, 6 pin, 8 pin, 9 pin, 10 pin, 11 pin,
12 pin, 13 pin, 14 pin, 19 pin and 24 foot stools are empty, and the first resistor R4 other end is connected with the 3rd connector P3 3 pin D-, the
The two resistance R5 other end is connected with the 3rd resistor R6 other end, the 3rd connector P3 2 pin D+；The 4 of 3rd connector P3
Pin connects+5V power supplys, the 3rd connector P3 1 pin ground connection；The 7th ROHS C1 other end is another with the 8th ROHS C2's
One end connects and is grounded；Second connector P2 5 pin are connected with controller chip U5 13 pin, and 9 pin are with controller chip U5's
32 pin are connected, and 2 pin are connected with controller chip U5 57 pin, and 4 pin are connected with controller chip U5 58 pin, 6 pin and controller
Chip U5 22 pin connection, 10 pin are connected with controller chip U5 35 pin；
As shown in fig. 6, input/output module includes the 4th resistance R7, the 5th resistance R8, the 6th resistance R9, the 7th resistance
R20, first switch K1, second switch K2, the 3rd switch K3, the 4th switch K4 and the first connector P1, the first connector P1's
Model LCD5110；
4th resistance R7 one end and the 5th resistance R8 one end, the 6th resistance R9 one end, the 7th resistance R20 one end
Connect and connect 3.3V power supplys, the 4th resistance R7 other end is connected with one end of controller chip U5 12 pin, the 4th switch K4,
The 5th resistance R8 other end is connected with one end of controller chip U5 13 pin, the 3rd switch K3, and the 6th resistance R9's is another
End is connected with controller chip U5 14 pin, second switch K2 one end, the 7th resistance the R20 other end and controller chip U5
15 pin, first switch K1 one end connection, the first switch K1 other end and the second switch K2 other end, the 3rd switch K3
The other end, the 4th switch K4 other end connect and is grounded, the 19 pin company of the first connector P1 1 pin and controller chip U5
Connect, 2 pin are connected with controller chip U5 20 pin, 1 pin is connected with controller chip U5 21 pin, 1 pin and controller chip U5
The connection of 22 pin, 1 pin is connected with controller chip U5 23 pin, and 6 pin are connected with 7 pin and connect 3.3V power supplys, and 8 pin are grounded；
As shown in fig. 7, test pencil detection module includes two resistance, a light emitting diode and a phototriode, the
Eight resistance R1 one end is connected with the first light emitting diode D1 anode, the first light emitting diode D1 negative electrode and phototriode
Emitter stage connect and be grounded, the 8th resistance R1 other end is connected with the 9th resistance R2 one end and connects 3.3V power supplys, the 9th
The resistance R2 other end and the colelctor electrode of phototriode are connected and are connected with controller chip U5 42 pin,
Digital-control constant-flow source module includes digital-control constant-flow source module DA circuits and digital-control constant-flow source module amplifier and MOS circuits；
As shown in figure 8, digital-control constant-flow source module DA circuits include analog-digital chip U11, two resistance, two only stone electricity
Hold, polar capacitor, rheostat REF1 and a voltage-regulator diode；Analog-digital chip U11 model TCL5615；
Analog-digital chip U11 1 pin connects controller chip U5 36 pin, and 2 pin connect controller chip U5 35 pin, 3 pin
Controller chip U5 35 pin are connect, 5 pin connect the 11st resistance R23 one end, and 6 pin connect rheostat REF1 movable end, 8 pin and
Ten ROHS C26 one end, the 7th polar capacitor C22 positive pole, the tenth resistance R15 one end connects and connects+5V power supplys, and 4
Foot stool is empty, and the tenth ROHS C26 other end is connected and is grounded with the 7th polar capacitor C22 negative pole；11st resistance R23
Other end ground connection, the tenth resistance R15 other end and voltage-regulator diode U8 anode, voltage-regulator diode U8 output end, become
Hinder a device REF1 fixing end, the R24 of the 11st ROHS one end connection, voltage-regulator diode U8 negative electrode and rheostat
REF1 another fixing end, the R24 of the 11st ROHS other end are connected and are grounded；
As shown in figure 9, digital-control constant-flow source module amplifier and MOS circuits include operation amplifier chip U9, a polar capacitor
C23, ROHS C27, the 12nd resistance R18, the 13rd resistance RS1 and a mos pipes Q3；Operation amplifier chip U9's
Model OP07；
Operation amplifier chip U9 1 pin, 5 pin, 8 foot stools are empty, and 2 pin are connected with the 13rd resistance RS1 one end, 3 pin and number
Mould conversion chip U11 7 pin connection, 4 pin connect -5V power supplys, and 6 pin are connected with the 12nd resistance R12 one end, 7 pin and the 12nd
ROHS C12 one end, the positive pole of the 8th polar capacitor connect and connect+9V power supplys, and the 12nd ROHS C12's is another
End, the negative pole ground connection of the 8th polar capacitor, the 12nd resistance R12 other end are connected with mos pipes Q3 grid, mos pipes Q3's
Drain electrode connects+9V power supplys；
As shown in Figure 10, instrument amplification module includes differential amplifier chip U10, six resistance, five ROHSs, one
Individual polar capacitor；Described differential amplifier chip U10 model INA128；
Differential amplifier chip U10 1 pin is connected with the 16th resistance R16 one end, 2 pin and the 14th resistance R19's
One end, the 13rd ROHS C29 one end connection, 3 pin and the 14th ROHS C30 one end, the 15th resistance R20
One end is connected, and 4 pin connect -5V power supplys, and 5 pin ground connection, 6 pin are connected with the 18th resistance R21 one end, 7 pin and the 15th only stone electricity
Hold C28 one end, the 9th polar capacitor C25 anode to connect and connect+5V power supplys, 8 pin and the 17th resistance R17 one end connect
Connect, the 16th resistance R16 other end is connected with the 17th resistance R17 other end, the 14th resistance the R19 other end and fortune
Amplification chip U9 2 pin connection is calculated, the 15th resistance R20 other end is connected with mos pipes Q3 source electrode, the 13rd ROHS
The C29 other end is connected and is grounded with the 14th ROHS C30 other end, the 18th resistance R21 other end and the tenth
Nine resistance R22 one end, the 16th ROHS C31 one end connection, the 16th ROHS C31 other end and the 17th
ROHS C32 one end connects and is grounded, the 19th resistance R22 other end and the 17th ROHS C32 other end
And connect controller chip U5 59 pin；The 15th ROHS C28 other end is connected simultaneously with the 9th polar capacitor C25 negative electrode
Ground connection；
As shown in figure 11, run indicator module includes the first triode Q4, the second light emitting diode D3, the 3rd luminous two
Pole pipe D4, the second triode Q5, the 20th resistance R24 and the 21st resistance R26;
First triode Q4 base stage is connected with the second triode Q5 base stage and connects controller chip U5 40 pin, first
Triode Q4 colelctor electrode is connected and is grounded with the 3rd light emitting diode D4 negative electrode, the first triode Q4 emitter stage and second
Light emitting diode D3 negative electrode connection, the second light emitting diode D3 anode is connected with the 20th resistance R24 one end, and the 20th
The resistance R24 other end is connected with the 21st resistance R26 one end and connects+5V power supplys, the second triode Q5 emitter stage with
3rd light emitting diode D4 anode connection, the second triode Q5 colelctor electrode is connected with the 21st resistance R26 other end；
As shown in figure 12, alarm module includes the 22nd resistance R11, the 3rd triode Q2 and buzzer；22nd
Resistance R11 one end is connected with controller chip U5 41 pin, the 22nd resistance R11 other end and the 3rd triode Q2's
Base stage is connected, the 3rd triode Q2 grounded emitter, and the 3rd triode Q2 colelctor electrode and one end of buzzer are connected, buzzing
Another termination+5V power supplys of device；
As shown in figure 13, controller module includes controller chip U5, four ROHSs and two crystal oscillators；
Controller chip U5 1 pin connects with the 18th ROHS C12 one end, the 19th ROHS C13 one end
Connect and connect 3.3V power supplys, the 18th ROHS C12 other end is connected and connect with the 19th ROHS C13 other end
Ground；Controller chip U5 8 pin are connected with the second crystal oscillator Y2 one end, and 9 pin are connected with the second crystal oscillator Y2 other end, 53 pin with
The one of the Y3 of 3rd crystal oscillator one end, the 20th ROHS C20 one end connection, 52 pin and the 21st ROHS C21
End, the Y3 of the 3rd crystal oscillator other end connection, the 21st ROHS C21 other end and the 20th ROHS C20's
The other end is connected and is grounded；Controller chip U5 62 pin are connected and are grounded with 63 pin, and 64 pin connect 3.3V power supplys；Controller chip
The pin that U5 is not mentioned hereinbefore is all maked somebody a mere figurehead.
The course of work of electronic tag on-line checking is as follows：After start, controller MSP430F149 carries out table according to button
Resistance self calibration；Then each unit detection resistance higher limit is selected by button；Into measurement pattern, single-chip microcomputer reads test pencil
Detect signal, the data of the tested electronic tag of collection；The resistance of tested electronic tag is included in host computer after inter-process
On；The buzzer warning if N number of substandard product is consecutively detected, run indicator is changed into red, indicator lamp during normal operation
For green.After measurement terminates, the measured electronic tag number of each unit and its correspondence resistance, display measurement are shown on host computer
In underproof number, and calculate the yields of this batch of electronic tag.
Claims (9)
1. a kind of electronic tag resistance on-line checking circuit, including power management module, BSL are downloaded and serial communication modular, defeated
Enter output module, test pencil detection module, digital-control constant-flow source module, instrument amplification module, run indicator module, alarm module and
Controller, it is characterised in that：Wherein power management module include 5V voltage conversion circuits using LM1085 as core, with
AMS1117 is the 3.3V voltage conversion circuits of core and the -5V voltage reversing circuits by core of LMC7660；Digital-control constant-flow source
Module includes DA circuits and amplifier and MOS circuits；5V voltage conversion circuits by core of LM1085 are that BSL is downloaded and serial ports is logical
Believe module, the 3.3V voltage conversion circuits by core of AMS1117, -5V voltage reversing circuits, number by core of LMC7660
DA circuits, instrument amplification module, run indicator module and the alarm module controlled in constant current source module provide 5V voltages；With
AMS1117 is input/output module for the 3.3V voltage conversion circuits of core, test pencil detection module and controller provide 3.3V electricity
Pressure；- 5V voltage reversing circuits by core of LMC7660 are that amplifier and MOS circuits and instrument in digital-control constant-flow source module are put
Big module offer -5V voltages；Controller sequentially enters calibration mode, measurement range selection pattern, measurement pattern according to key value is read in,
And in calibration mode, controller remembers the resistance of test pencil, during measurement pattern, result measured directly is subtracted into calibration value, i.e.,
The resistance of tested electronic tag is obtained, and resistance is included on LCD and host computer；Quilt is selected successively during measurement range selection pattern
The range of electronic tag resistance is surveyed, continuous N number of label outranges, alarms and shut down, and run indicator is become by normal green
For red；The tested electronic tag resistance that controller collection is returned is passed on host computer by serial ports after being computed and shown, and
Calculate the acceptance rate of product；
The described 5V voltage conversion circuits using LM1085 as core, including four ROHSs, two polar capacitors and voltage
Conversion chip U2, voltage conversion chip U2 models LM1085；
Described voltage conversion chip U2 VIN pin and the first ROHS C6 one end, the second ROHS C7 one end,
One polar capacitor C10 positive pole connects and connects+9V power supplys, Vout ends and the 3rd ROHS C8 one end, the 4th ROHS
C9 one end, the second polar capacitor C11 positive pole connection and as 5V voltage output ends, GND pin and the first ROHS C6's
The other end, the second ROHS C7 other end, the first polar capacitor C10 negative pole, the 3rd ROHS C8 other end,
The four ROHS C9 other end, the second polar capacitor C11 negative pole are connected and are grounded；
The described 3.3V voltage conversion circuits using AMS1117 as core include two ROHSs, two polar capacitors and electricity
Press conversion chip U7, voltage conversion chip U7 models AMS1117；
Described voltage conversion chip U7 VIN pin and the 3rd polar capacitor C17 positive pole, the 5th ROHS C15 one end
Connect and connect+5V power supplys, Vout ends are connected and conduct with quadripolarity electric capacity C18 positive pole, the 6th ROHS C16 one end
3.3V voltage output ends, GND pin and the 3rd polar capacitor C17 negative pole, the 5th ROHS C15 other ends, the 3rd polarity electricity
Negative pole, the quadripolarity electric capacity C18 other end for holding C17 are connected and are grounded；
- 5V voltage reversing circuits by core of LMC7660 include voltage conversion chip U6 and two polar capacitors, voltage conversion
Chip U6 model LMC7660IN；
Described voltage conversion chip U6 3 pin ground connection, 2 pin are connected with the 5th polar capacitor C14 positive pole, 4 pin and the 5th pole
Property electric capacity C14 negative pole connection, 8 pin connect+5V power supplys, and 5 pin are connected and conduct -5V voltages with the 6th polar capacitor C19 negative pole
Output end, the 6th polar capacitor C19 plus earth.
2. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：BSL downloads and gone here and there
Port communications module include the second connector P2, the 3rd connector P3, serial communication switch chip U1, crystal oscillator Y1, three electric capacity and
Three resistance；Model the Header 5X2, the 3rd connector P3 model USB of the second described connector P2；
Described serial communication switch chip U1 1 pin is connected with the second connector P2 8 pin, and the 3 of 2 pin and the second connector P2
Pin is connected, and 3 pin are connected with the second connector P2 1 pin, and 4 pin connect 3.3V power supplys, and 5 pin are connected with the second connector P2 7 pin, and 7
Pin is grounded, and 15 pin are connected with second resistance R5 one end, and 16 pin are connected with first resistor R4 one end, 17 pin and 3rd resistor R6
One end, the 9th ROHS C3 one end connection, 18 pin are connected and are grounded with the 9th ROHS C3 other end, and 20 pin connect
+ 5V power supplys, 21 pin, 22 pin, 23 pin, 25 pin and 26 pin ground connection, one end, the 8th ROHS C2 one end of 27 pin and crystal oscillator Y1
Connection, 28 pin are connected with the crystal oscillator Y1 other end, the 7th ROHS C1 one end, 6 pin, 8 pin, 9 pin, 10 pin, 11 pin, 12
Pin, 13 pin, 14 pin, 19 pin and 24 foot stools are empty, and the first resistor R4 other end is connected with the 3rd connector P3 3 pin D-, and second
The resistance R5 other end is connected with the 3rd resistor R6 other end, the 3rd connector P3 2 pin D+；3rd connector P3 4 pin
Connect+5V power supplys, the 3rd connector P3 1 pin ground connection；The 7th ROHS C1 other end is another with the 8th ROHS C2's
End connects and is grounded；Second connector P2 5 pin are connected with controller chip U5 13 pin, 9 pin and the 32 of controller chip U5
Pin is connected, and 2 pin are connected with controller chip U5 57 pin, and 4 pin are connected with controller chip U5 58 pin, 6 pin and controller core
Piece U5 22 pin connection, 10 pin are connected with controller chip U5 35 pin.
3. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Input/output module
Opened including the 4th resistance R7, the 5th resistance R8, the 6th resistance R9, the 7th resistance R20, first switch K1, second switch K2, the 3rd
Close K3, the 4th switch K4 and the first connector P1, the first connector P1 model LCD5110；
4th resistance R7 one end is connected with one end of the 5th resistance R8 one end, the 6th resistance R9 one end, the 7th resistance R20
And 3.3V power supplys are connect, and the 4th resistance R7 other end is connected with one end of controller chip U5 12 pin, the 4th switch K4, and the 5th
The resistance R8 other end and controller chip U5 13 pin, the 3rd switch K3 one end be connecteds, the 6th resistance R9 other end and
One end connection of controller chip U5 14 pin, second switch K2, the 7th resistance R20 other end and the 15 of controller chip U5
One end connection of pin, first switch K1, the first switch K1 other end switchs the another of K3 with the second switch K2 other end, the 3rd
One end, the 4th switch K4 other end are connected and are grounded, and the first connector P1 1 pin is connected with controller chip U5 19 pin, and 2
Pin is connected with controller chip U5 20 pin, and 1 pin is connected with controller chip U5 21 pin, 1 pin and the 22 of controller chip U5
Pin is connected, and 1 pin is connected with controller chip U5 23 pin, and 6 pin are connected with 7 pin and connect 3.3V power supplys, 8 pin ground connection.
4. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Test pencil detection module
Including two resistance, a light emitting diode and a phototriode,
8th resistance R1 one end is connected with the first light emitting diode D1 anode, the first light emitting diode D1 negative electrode with it is photosensitive
Triode Q1 emitter stage is connected and is grounded, and the 8th resistance R1 other end is connected with the 9th resistance R2 one end and connects 3.3V electricity
Source, the 9th resistance R2 other end is connected with phototriode Q1 colelctor electrode and is connected with controller chip U5 42 pin.
5. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Digital-control constant-flow source mould
Block includes digital-control constant-flow source module DA circuits and digital-control constant-flow source module amplifier and MOS circuits；
Digital-control constant-flow source module DA circuits include analog-digital chip U11, two resistance, two ROHSs, a polarity electricity
Appearance, rheostat REF1 and a voltage-regulator diode；Analog-digital chip U11 model TCL5615；
Analog-digital chip U11 1 pin connects controller chip U5 36 pin, and 2 pin connect controller chip U5 35 pin, and 3 pin connect control
Device chip U5 processed 35 pin, 5 pin connect the 11st resistance R23 one end, and 6 pin connect rheostat REF1 movable end, 8 pin and the tenth only
Stone electric capacity C26 one end, the 7th polar capacitor C22 positive pole, the tenth resistance R15 one end connects and connects+5V power supplys, 4 foot stools
Sky, the tenth ROHS C26 other end is connected and is grounded with the 7th polar capacitor C22 negative pole；11st resistance R23's is another
One end is grounded, the tenth resistance R15 other end and voltage-regulator diode U8 anode, voltage-regulator diode U8 output end, rheostat
A REF1 fixing end, the R24 of the 11st ROHS one end connection, voltage-regulator diode U8 negative electrode and rheostat REF1
Another fixing end, the R24 of the 11st ROHS other end connects and is grounded；
Digital-control constant-flow source module amplifier and MOS circuits include operation amplifier chip U9, polar capacitor C23, an only stone electricity
Hold C27, the 12nd resistance R18, the 13rd resistance RS1 and a mos pipes Q3；Operation amplifier chip U9 model OP07；
Operation amplifier chip U9 1 pin, 5 pin, 8 foot stools are empty, and 2 pin are connected with the 13rd resistance RS1 one end, and 3 pin turn with digital-to-analogue
Chip U11 7 pin connection is changed, 4 pin connect -5V power supplys, and 6 pin are connected with the 12nd resistance R12 one end, 7 pin and the 12nd only stone
Electric capacity C12 one end, the positive pole of the 8th polar capacitor connect and connect+9V power supplys, the 12nd ROHS C12 other end,
The negative pole ground connection of eight polar capacitors, the 12nd resistance R12 other end is connected with mos pipes Q3 grid, and mos pipes Q3 drain electrode connects
+ 9V power supplys.
6. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Instrument amplification module
Including differential amplifier chip U10, six resistance, five ROHSs, a polar capacitors；Described differential amplifier chip
U10 model INA128；
Differential amplifier chip U10 1 pin is connected with the 16th resistance R16 one end, 2 pin and the 14th resistance R19 one end,
13rd ROHS C29 one end connection, 3 pin and the 14th ROHS C30 one end, the 15th resistance R20 one end
Connection, 4 pin connect -5V power supplys, and 5 pin ground connection, 6 pin are connected with the 18th resistance R21 one end, 7 pin and the 15th ROHS C28
One end, the 9th polar capacitor C25 anode connect and connect+5V power supplys, 8 pin are connected with the 17th resistance R17 one end, the tenth
The six resistance R16 other end is connected with the 17th resistance R17 other end, the 14th resistance the R19 other end and operation amplifier
Chip U9 2 pin connection, the 15th resistance R20 other end is connected with mos pipes Q3 source electrode, the 13rd ROHS C29's
The other end is connected and is grounded with the 14th ROHS C30 other end, the 18th resistance the R21 other end and the 19th resistance
R22 one end, the 16th ROHS C31 one end connection, the 16th ROHS C31 other end and the 17th only stone electricity
The one end for holding C32 connects and is grounded, and the 19th resistance R22 other end and the 17th ROHS C32 other end simultaneously connect control
Device chip U5 processed 59 pin；The 15th ROHS C28 other end is connected and is grounded with the 9th polar capacitor C25 negative electrode.
7. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Run indicator mould
Block includes the first triode Q4, the second light emitting diode D3, the 3rd light emitting diode D4, the second triode Q5, the 20th resistance
R24 and the 21st resistance R26；
First triode Q4 base stage is connected with the second triode Q5 base stage and connects controller chip U5 40 pin, the one or three pole
Pipe Q4 colelctor electrode is connected and is grounded with the 3rd light emitting diode D4 negative electrode, and the first triode Q4 emitter stage and second lights
Diode D3 negative electrode connection, the second light emitting diode D3 anode is connected with the 20th resistance R24 one end, the 20th resistance
The R24 other end is connected with the 21st resistance R26 one end and connects+5V power supplys, the second triode Q5 emitter stage and the 3rd
Light emitting diode D4 anode connection, the second triode Q5 colelctor electrode is connected with the 21st resistance R26 other end.
8. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Alarm module includes
22nd resistance R11, the 3rd triode Q2 and buzzer；22nd resistance R11 one end and the 41 of controller chip U5
Pin is connected, and the 22nd resistance R11 other end is connected with the 3rd triode Q2 base stage, and the 3rd triode Q2 emitter stage connects
Ground, the 3rd triode Q2 colelctor electrode and one end of buzzer are connected, another termination+5V power supplys of buzzer.
9. a kind of electronic tag resistance on-line checking circuit according to claim 1, it is characterised in that：Controller module bag
Include controller chip U5, four ROHSs and two crystal oscillators；
Controller chip U5 1 pin is connected simultaneously with the 18th ROHS C12 one end, the 19th ROHS C13 one end
3.3V power supplys are connect, the 18th ROHS C12 other end is connected and is grounded with the 19th ROHS C13 other end；Control
Device chip U5 processed 8 pin are connected with the second crystal oscillator Y2 one end, and 9 pin are connected with the second crystal oscillator Y2 other end, 53 pin and the 3rd
The Y3 of crystal oscillator one end, the 20th ROHS C20 one end connection, 52 pin and the 21st ROHS C21 one end, the
The Y3 of three crystal oscillators other end connection, the 21st ROHS C21 other end and the 20th ROHS C20 other end
Connect and be grounded；Controller chip U5 62 pin are connected and are grounded with 63 pin, and 64 pin connect 3.3V power supplys；The controller core do not mentioned
Piece U5 pin is all maked somebody a mere figurehead.
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| CN107300641A (en) * | 2017-05-09 | 2017-10-27 | 杭州电子科技大学 | Electronic tag resistance multi-path multi-machine detection device |
| CN107193049B (en) * | 2017-06-30 | 2023-04-28 | 杭州电子科技大学 | Vehicle detection circuit based on AMR sensor |
| CN109188565A (en) * | 2018-10-15 | 2019-01-11 | 南京信息工程大学 | A kind of the digital meteorological sounding meter and its sounding system with camera |
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| CN1828627A (en) * | 2005-03-01 | 2006-09-06 | 北京清华同方微电子有限公司 | Power management circuit for non-contact IC card reading apparatus |
| CN102116877A (en) * | 2009-12-30 | 2011-07-06 | 上海锐帆信息科技有限公司 | Anti-disassembly electronic wrist strap based on resistance detection |
| CN204045863U (en) * | 2014-08-21 | 2014-12-24 | 浪潮电子信息产业股份有限公司 | A kind of novel power distribution board |
| CN204422652U (en) * | 2015-01-09 | 2015-06-24 | 杭州电子科技大学 | Electronic tag resistance on-line checkingi circuit |
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| US6818420B2 (en) * | 2002-02-27 | 2004-11-16 | Biosource International, Inc. | Methods of using FET labeled oligonucleotides that include a 3′-5′ exonuclease resistant quencher domain and compositions for practicing the same |
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|---|---|---|---|---|
| CN1828627A (en) * | 2005-03-01 | 2006-09-06 | 北京清华同方微电子有限公司 | Power management circuit for non-contact IC card reading apparatus |
| CN102116877A (en) * | 2009-12-30 | 2011-07-06 | 上海锐帆信息科技有限公司 | Anti-disassembly electronic wrist strap based on resistance detection |
| CN204045863U (en) * | 2014-08-21 | 2014-12-24 | 浪潮电子信息产业股份有限公司 | A kind of novel power distribution board |
| CN204422652U (en) * | 2015-01-09 | 2015-06-24 | 杭州电子科技大学 | Electronic tag resistance on-line checkingi circuit |
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Effective date of registration: 20180717 Address after: 310000, Yao Jia Wu industrial zone, Hu Bu Village, Xihu District, Hangzhou, Zhejiang. Patentee after: Hangzhou meisite intelligent Polytron Technologies Inc Address before: 310018 2 street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: Hangzhou Electronic Science and Technology Univ |