CN207650816U - Bar code scan wireless transmitting system - Google Patents
Bar code scan wireless transmitting system Download PDFInfo
- Publication number
- CN207650816U CN207650816U CN201721406484.5U CN201721406484U CN207650816U CN 207650816 U CN207650816 U CN 207650816U CN 201721406484 U CN201721406484 U CN 201721406484U CN 207650816 U CN207650816 U CN 207650816U
- Authority
- CN
- China
- Prior art keywords
- module
- bar code
- microprocessor
- triode
- wireless transport
- 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.)
- Expired - Fee Related
Links
- 239000013078 crystal Substances 0.000 claims description 6
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 241000282326 Felis catus Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Selective Calling Equipment (AREA)
Abstract
The utility model discloses a kind of bar code scan wireless transmitting systems, including barcode scanning device and receive terminal, the barcode scanning device includes bar code identification module, first microprocessor, first wireless transport module and power supply module, it includes the second wireless transport module to receive terminal, second microprocessor, memory module and display module, bar code identification module reads barcode data and sends it to first microprocessor, first microprocessor sends barcode data to second wireless transport module by the first wireless transport module, barcode data is transmitted to the second microprocessor and compared by the second wireless transport module；Bar code identification module includes image sensor chip, buzzer, the first triode, first resistor, second resistance, the first light emitting diode, the 4th diode and the first DC power supply.The utility model can wirelessly transmit barcode data, circuit structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher.
Description
Technical field
The utility model is related to bar code scan field, more particularly to a kind of bar code scan wireless transmitting system.
Background technology
Barcode scanner, also known as barcode reader, bar code scanner, bar code scanner, barcode scanner and item
Code reader.It is the arrangement for reading for reading the included information of bar code, using optical principle, the content solution of bar code
Pass through data line transfer to computer or other equipment after code.Barcode scanner is widely used in business POS cash register system.Mesh
It is preceding in traditional cashier barcode scanning equipment, barcode scanning cat and the ends PC carry out barcode scanning using Serial Communication, and data are identified
Communication transfer, cannot be wirelessly transferred with wireless communication technique.In addition, the circuit part structure of current barcode scanner
Complexity, hardware cost is higher, and due to lacking corresponding circuit protection function, causes the safety and reliability of circuit not
It is high.
Utility model content
The technical problem to be solved by the present invention is to, for the drawbacks described above of the prior art, provide it is a kind of can be by item
Wirelessly transmit, circuit structure is relatively simple, cost is relatively low, the higher item of the safety and reliability of circuit by data for code
Code scanning wireless transmitting system.
Technical solution adopted by the utility model to solve its technical problems is：Construct a kind of bar code scan wireless transmission system
System, including barcode scanning device and receive terminal, the barcode scanning device includes bar code identification module, first microprocessor, first wireless
Transmission module and power supply module, the reception terminal include the second wireless transport module, the second microprocessor, memory module and show
Show that module, the bar code identification module read barcode data and send it to the first microprocessor, first micro- place
Reason device sends the barcode data to second wireless transport module by first wireless transport module, and described second
The barcode data is transmitted to second microprocessor by wireless transport module, and second microprocessor is by described yardage
After being compared with several standard bar code information being stored in the memory module, by the barcode data and comparing result
It is sent to the display module to be shown, one end of first wireless transport module is crystal head the end of a thread, first nothing
The other end of line transmission module is USB interface, and first wireless transport module passes through described crystal head the end of a thread and described first
Microprocessor connects, and first wireless transport module is connect by the USB interface with the power supply module, the power supply mould
Block is also connect with the first microprocessor；
The bar code identification module include image sensor chip, buzzer, the first triode, first resistor, second resistance,
First light emitting diode, the 4th diode and the first DC power supply, the second pin of described image sensing chip and described first
DC power supply connects, the third pin ground connection of described image sensing chip, one end of the buzzer and first direct current
Source connects, and the other end of the buzzer is connect with the emitter of first triode, the collector of first triode
It being grounded by the second resistance, the base stage of first triode is connect with the cathode of the 4th diode, and the described 4th
The anode of diode is connect with the 9th pin of described image sensing chip, and the tenth pin of described image sensing chip passes through institute
It states first resistor to connect with the anode of first light emitting diode, the minus earth of first light emitting diode.
In bar code scan wireless transmitting system described in the utility model, the power supply module includes the second direct current
Source, the second triode, third transistor, the second light emitting diode, third light emitting diode, the 5th diode, the first capacitance,
Two capacitances and 3rd resistor, the base stage that the collector of the third transistor passes through second capacitance and second triode
Connection, the base stage of the third transistor respectively with the collector of second triode, the second light emitting diode cathode and
The anode of third light emitting diode connects, and the emitter of the third transistor and the cathode of the third light emitting diode connect
Connect, the third light emitting diode is in parallel with first wireless transport module, the emitter of second triode respectively with
The cathode of 5th diode is connected with one end of 3rd resistor, the other end of the 3rd resistor and described second luminous two
The anode of pole pipe connects, and the anode of the 5th diode connects with one end of second DC power supply and the first capacitance respectively
It connects, first capacitance is in parallel with the first microprocessor, the capacitance 300PF of second capacitance, the five or two pole
The model NSI45030T1G of pipe.
In bar code scan wireless transmitting system described in the utility model, the power supply module further includes third capacitance,
One end of the third capacitance is connect with the base stage of the third transistor, the other end of the third capacitance and the described 2nd 3
The collector of pole pipe connects, and the capacitance of the third capacitance is 500PF.
In bar code scan wireless transmitting system described in the utility model, the power supply module further includes the 4th resistance,
For the emitter of the third transistor by the 4th resistance eutral grounding, the resistance value of the 4th resistance is 4.7K Ω.
In bar code scan wireless transmitting system described in the utility model, the resistance value of the second resistance is 2.2K Ω,
The model NSI45030AT1G of 4th diode.
In bar code scan wireless transmitting system described in the utility model, first wireless transport module and the second nothing
Line transmission module is bluetooth module, WIFI module, GPRS module, gsm module, CDMA module, WCDMA modules, Zigbee moulds
Block or LoRa modules.
In bar code scan wireless transmitting system described in the utility model, first triode is PNP type triode.
In bar code scan wireless transmitting system described in the utility model, second triode is PNP type triode,
The third transistor is NPN type triode.
In bar code scan wireless transmitting system described in the utility model, the reception terminal is mobile phone end or PC
End.
The bar code scan wireless transmitting system for implementing the utility model, has the advantages that：Due to including barcode scanning dress
Terminal is set and receives, the barcode scanning device includes bar code identification module, first microprocessor, the first wireless transport module and power supply
Module, the reception terminal include the second wireless transport module, the second microprocessor, memory module and display module, therefore item
Code data can be wirelessly transmitted, in addition, bar code identification module includes image sensor chip, buzzer, the one or three pole
Pipe, first resistor, second resistance, the first light emitting diode, the 4th diode and the first DC power supply, the bar code identification module with
Traditional bar code identification circuit is compared, and the component used is less, can reduce hardware cost in this way, in addition, second resistance
Current-limiting protection is carried out for the collector current to the first triode, the 4th diode is used for the first triode and image sensing
Branch between chip carries out current-limiting protection, thus barcode data can wirelessly be transmitted, circuit structure is relatively simple,
Cost is relatively low, circuit safety and reliability is higher.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram in the utility model bar code scan wireless transmitting system one embodiment；
Fig. 2 is the circuit diagram of bar code identification module in the embodiment；
Fig. 3 is the circuit diagram of power supply module in the embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the utility model bar code scan wireless transmitting system embodiment, the structure of the bar code scan wireless transmitting system
Schematic diagram is as shown in Figure 1.In Fig. 1, which includes barcode scanning device 1 (being barcode scanning cat in the present embodiment)
With reception terminal 2, wherein barcode scanning device 1 includes bar code identification module 11, first microprocessor 12, the first wireless transport module
13 and power supply module 14, it includes the second wireless transport module 21, the second microprocessor 22, memory module 23 and aobvious to receive terminal 2
Show module 24, bar code identification module 11 reads the barcode data in bar code, and the barcode data of reading is transmitted to first micro- place
Device 12 is managed, first microprocessor 12 sends the barcode data to second wireless transport module by the first wireless transport module 13
21, which is transmitted to the second microprocessor 22 by the second wireless transport module 21, is stored in memory module 23 several
Standard bar code information, these standard bar code information read for the second microprocessor 22.
Second microprocessor 22 can believe the barcode data of reception and several standard bar codes being stored in memory module 23
After breath is compared, the barcode data and comparing result are sent to display module 24 and shown.The display module 24 can be with
It is LCD display or LED display.It is noted that in the present embodiment, one end of the first wireless transport module 13 is crystal
Head the end of a thread, the other end of the first wireless transport module 13 are USB interface, the first wireless transport module 13 by crystal head the end of a thread with
First microprocessor 12 connects, and the first wireless transport module 13 is connect by USB interface with power supply module 14, that is to say, that is connect
It when entering power supply module 14, can be accessed by USB interface, above-mentioned power supply module 14 is also connect with first microprocessor 12.
First wireless transport module 13 completes the power supply to barcode scanning device 1 and information converting transmission work(with a connecting line
Energy.First wireless transport module 13 is responsible for the bar code information that 1 barcode scanning of barcode scanning device obtains to be converted into meeting corresponding wireless transmission
The signal of agreement, the reception terminal 2 for being transmitted directly to pairing are communicated.The utility model makes the information of barcode scanning device 1 pass
It is defeated not to be confined to the communication of serial ports entity line, barcode data can be wirelessly transmitted, simplify barcode scanning device 1 with
The complexity of the connection of terminal 2 is received, and the connecting line of the first wireless transport module 13 is set using most of barcode scanning on the market
Standby connectivity port is inserted directly into new connecting line on the basis of original equipment is not transformed and turning for wireless transmission signal can be completed
It changes.
It is noted that in the present embodiment, above-mentioned first microprocessor 12 and the second microprocessor 22 are microcontroller,
First wireless transport module 13 and the second wireless transport module 21 be bluetooth module, WIFI module, GPRS module, gsm module,
CDMA module, WCDMA modules, Zigbee module or LoRa modules can meet difference by the way that various wireless communication mode is arranged
Demand of the user under different occasions.Such as：When using bluetooth module, the barcode data of acquisition is converted by barcode scanning device 1
Bluetooth communication signals are simultaneously communicated with terminal 2 is received.When in particular by LoRa modules, communication distance farther out, and communicates
High stability, be suitable for the occasion more demanding to communication performance.It is mobile phone end or the ends PC, the ends PC to receive terminal 2
Can be tablet computer, laptop, palm PC or desktop computer etc..
Fig. 2 is the circuit diagram of bar code identification module in the present embodiment, and in Fig. 2, which includes figure
As sensing chip U1, buzzer B1, the first triode Q1, first resistor R1, second resistance R2, the first Light-emitting diode LED 1,
4th diode D4 and the first DC power supply VCC, wherein the second pin of image sensor chip U1 and the first DC power supply VCC
The third pin of connection, image sensor chip U1 is grounded GND, and one end of buzzer B1 is connect with the first DC power supply VCC, buzzing
The other end of device B1 is connect with the emitter of the first triode Q1, and the collector of the first triode Q1 is connect by second resistance R2
The base stage on ground, the first triode Q1 is connect with the cathode of the 4th diode D4, anode and the image sensing core of the 4th diode D4
The 9th pin of piece U1 connects, and the tenth pin of image sensor chip D4 passes through first resistor R1 and the first Light-emitting diode LED 1
Anode connection, the minus earth GND of the first Light-emitting diode LED 1.
The bar code identification module 11 is compared with traditional bar code identification circuit, and the component used is less, circuit structure
It is relatively simple, hardware cost can be reduced in this way.Second resistance R2 is for limiting the collector current of the first triode Q1
Stream, the 4th diode D4 carry out current-limiting protection for the branch between the first triode Q1 and image sensor chip U1, therefore
The safety and reliability of circuit is higher.It is noted that in the present embodiment, the resistance value of second resistance R2 is 2.2K Ω, the
The model NSI45030AT1G of four diode D4, certainly, in practical applications, the resistance value of second resistance R2 can be according to specific
Situation adjusts accordingly, and the 4th diode D4 can select diode of other models with similar functions.
In the present embodiment, bar code identification module 11 is for being read out and identifying to bar code, if can normally identify, the
One Light-emitting diode LED, 1 normal luminous, if cannot identify, the first Light-emitting diode LED 1 does not shine, and passes through buzzer B1
Jingle bell sounds and reminds user.
It is noted that in the present embodiment, the first triode Q1 is PNP type triode, certainly, in practical applications,
First triode Q1 may be NPN type triode, but at this moment the circuit structure of bar code identification module 11 also will accordingly become
Change.The model OV7120 of image sensor chip U1, certainly, in practical applications, image sensor chip U1 can also use it
His model has the chip of similar functions.
Fig. 3 is the circuit diagram of power supply module in the present embodiment, and in Fig. 3, power supply module 14 includes the second DC power supply
VDD, the second triode Q2, third transistor Q3, the second Light-emitting diode LED 2, third Light-emitting diode LED 3, the five or two pole
Pipe D5, the first capacitance C1, the second capacitance C2 and 3rd resistor R3, wherein the collector of third transistor Q3 passes through the second capacitance
C2 is connect with the base stage of the second triode Q2, the base stage of third transistor Q3 respectively with the collector of the second triode Q2, second
The cathode of Light-emitting diode LED 2 is connected with the anode of third Light-emitting diode LED 3, the emitter and third of third transistor Q3
The cathode of Light-emitting diode LED 3 connects, and third Light-emitting diode LED 3 is in parallel with the first wireless transport module 13, the two or three pole
The emitter of pipe Q2 is connect with one end of the cathode of the 5th diode D5 and 3rd resistor R3 respectively, the other end of 3rd resistor R3
Connect with the anode of the second Light-emitting diode LED 2, the anode of the 5th diode D5 respectively with the second DC power supply VDD and first
One end of capacitance C1 connects, and the first capacitance C1 is in parallel with first microprocessor 12.
The power supply module 14 is compared with traditional power supply circuit, and the component used is less, and circuit structure is relatively simple,
Hardware cost can be reduced in this way.In addition, the 5th diode D5 is Current Limiting Diodes, for the collector to the second triode Q2
Electric current carries out current limliting.Second capacitance C2 is coupled capacitor, dry between the second triode Q2 and third transistor Q3 for preventing
It disturbs, to further enhance the safety and reliability of circuit.It is noted that in the present embodiment, the capacitance of the second capacitance C2
Value 300PF, the model NSI45030T1G of the 5th diode D5.Certainly, in practical applications, the capacitance of the second capacitance C2
It can adjust accordingly as the case may be, the 5th diode D5 can also select two poles of other models with similar functions
Pipe.
In the presence of first microprocessor 12, third transistor Q3 is led through 3rd resistor R3 and the second Light-emitting diode LED 2
Logical, after conducting therefore the second triode Q2 is also connected, and direct current output can appear in the both ends of the first wireless transport module 13, this
When third Light-emitting diode LED 3 shine, and the second Light-emitting diode LED 2 is because both ends be in same current potential, therefore still in extinguishing shape
State.
If short trouble occurs for the first wireless transport module 13, third transistor Q3 is ended due to base earth.Cause
And the second triode Q2 is also switched off, during 13 short circuit of the first wireless transport module, third Light-emitting diode LED 3 is extinguished, and the
Two Light-emitting diode LED 2 shine, the first capacitance C1 at 12 both ends of first microprocessor be in order in the first wireless transport module
Help absorbs the voltage fluctuation of first microprocessor 12 during 13 short circuits, accomplishes 12 noiseless output of first microprocessor, ensures
The safety of first microprocessor 12.
It is noted that in the present embodiment, the second triode Q2 is PNP type triode, and third transistor Q3 is NPN type
Triode.Certainly, in practical applications, the second triode Q2 may be NPN type triode, and third transistor Q3 may be
PNP type triode, but at this moment the circuit structure of power supply module 14 also will accordingly change.
In the present embodiment, which further includes third capacitance C3, one end of third capacitance C3 and third transistor
The base stage of Q3 connects, and the other end of third capacitance C3 is connect with the collector of the second triode Q2.Third capacitance C3 is coupling electricity
Hold, for preventing the interference between the second triode Q2 and third transistor Q3, with further enhance circuit safety and
Reliability.It is noted that in the present embodiment, the capacitance of third capacitance C3 is 500PF, certainly, in practical applications, the
The capacitance of three capacitance C3 can adjust accordingly as the case may be.
In the present embodiment, which further includes the 4th resistance R4, and the emitter of third transistor Q3 passes through the 4th
Resistance R4 ground connection.4th resistance R4 is current-limiting resistance, and current-limiting protection is carried out for the emitter current to third transistor Q3, with
Enhance current limitation effect.It is noted that in the present embodiment, the resistance value of the 4th resistance R4 is 4.7K Ω, certainly, in practical application
In, the resistance value of the 4th resistance R4 can adjust accordingly as the case may be.
In short, in the present embodiment, due to being equipped with the first wireless transport module 13 in barcode scanning device 1, the first nothing can be passed through
Barcode data is wirelessly transmitted by line transmission module 13, therefore barcode data can be passed through wireless parties by the utility model
Formula is transmitted.For the bar code identification module 11 compared with traditional bar code identification circuit, the component used is less, can drop in this way
Low hardware cost, in addition, current-limiting resistance and Current Limiting Diodes are equipped in bar code identification module 11, therefore the safety of circuit and can
It is higher by property.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of bar code scan wireless transmitting system, which is characterized in that including barcode scanning device and receive terminal, the barcode scanning device
Including bar code identification module, first microprocessor, the first wireless transport module and power supply module, the reception terminal includes second
Wireless transport module, the second microprocessor, memory module and display module, the bar code identification module and first microprocessor
Device connects, and the first microprocessor is connect by first wireless transport module with second wireless transport module, institute
The second wireless transport module to be stated to connect with second microprocessor, second microprocessor is connect with the memory module,
Second microprocessor is connect with the display module, and one end of first wireless transport module is crystal head the end of a thread, institute
State the first wireless transport module the other end be USB interface, first wireless transport module by described crystal head the end of a thread with
The first microprocessor connection, first wireless transport module are connect by the USB interface with the power supply module, institute
Power supply module is stated also to connect with the first microprocessor；
The bar code identification module includes image sensor chip, buzzer, the first triode, first resistor, second resistance, first
Light emitting diode, the 4th diode and the first DC power supply, the second pin of described image sensing chip and first direct current
Power supply connects, and the third pin ground connection of described image sensing chip, one end of the buzzer connects with first DC power supply
It connects, the other end of the buzzer is connect with the emitter of first triode, and the collector of first triode passes through
The second resistance ground connection, the base stage of first triode are connect with the cathode of the 4th diode, the four or two pole
The anode of pipe is connect with the 9th pin of described image sensing chip, and the tenth pin of described image sensing chip passes through described
One resistance is connect with the anode of first light emitting diode, the minus earth of first light emitting diode.
2. bar code scan wireless transmitting system according to claim 1, which is characterized in that the power supply module includes second
DC power supply, the second triode, third transistor, the second light emitting diode, third light emitting diode, the 5th diode, first
The collector of capacitance, the second capacitance and 3rd resistor, the third transistor passes through second capacitance and the two or three pole
The base stage of pipe connects, the base stage of the third transistor respectively with the collector of second triode, the second light emitting diode
Cathode connected with the anode of third light emitting diode, the emitter of the third transistor and the third light emitting diode
Cathode connects, and the third light emitting diode is in parallel with first wireless transport module, the emitter of second triode
It is connect respectively with one end of the cathode of the 5th diode and 3rd resistor, the other end of the 3rd resistor and described second
The anode of light emitting diode connects, the anode of the 5th diode respectively with second DC power supply and the first capacitance one
End connection, first capacitance is in parallel with the first microprocessor, the capacitance 300PF of second capacitance, and the described 5th
The model NSI45030T1G of diode.
3. bar code scan wireless transmitting system according to claim 2, which is characterized in that the power supply module further includes
One end of three capacitances, the third capacitance is connect with the base stage of the third transistor, the other end of the third capacitance and institute
The collector connection of the second triode is stated, the capacitance of the third capacitance is 500PF.
4. bar code scan wireless transmitting system according to claim 3, which is characterized in that the power supply module further includes
Four resistance, for the emitter of the third transistor by the 4th resistance eutral grounding, the resistance value of the 4th resistance is 4.7K Ω.
5. bar code scan wireless transmitting system according to any one of claims 1 to 4, which is characterized in that described second
The resistance value of resistance is 2.2K Ω, the model NSI45030AT1G of the 4th diode.
6. bar code scan wireless transmitting system according to any one of claims 1 to 4, which is characterized in that described first
Wireless transport module and the second wireless transport module are bluetooth module, WIFI module, GPRS module, gsm module, CDMA moulds
Block, WCDMA modules, Zigbee module or LoRa modules.
7. bar code scan wireless transmitting system according to claim 6, which is characterized in that first triode is PNP
Type triode.
8. the bar code scan wireless transmitting system according to claim 2 to 4 any one, which is characterized in that described second
Triode is PNP type triode, and the third transistor is NPN type triode.
9. bar code scan wireless transmitting system according to claim 6, which is characterized in that the reception terminal is intelligent hand
Generator terminal or the ends PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721406484.5U CN207650816U (en) | 2017-10-27 | 2017-10-27 | Bar code scan wireless transmitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721406484.5U CN207650816U (en) | 2017-10-27 | 2017-10-27 | Bar code scan wireless transmitting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650816U true CN207650816U (en) | 2018-07-24 |
Family
ID=62884674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721406484.5U Expired - Fee Related CN207650816U (en) | 2017-10-27 | 2017-10-27 | Bar code scan wireless transmitting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207650816U (en) |
-
2017
- 2017-10-27 CN CN201721406484.5U patent/CN207650816U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201765685U (en) | Sensing node circuit applicable to various types of sensors | |
| CN102013737A (en) | Wirelessly charged sensor node | |
| CN101917207A (en) | Sensing node circuit adapting to various sensors | |
| CN207650816U (en) | Bar code scan wireless transmitting system | |
| CN203278279U (en) | Multifunctional mobile power supply | |
| CN107729787A (en) | Bar code scan wireless transmitting system | |
| CN206489195U (en) | Intelligent electric energy meter | |
| CN201638358U (en) | Intelligent radio-frequency wireless anti-lost device | |
| CN101950349A (en) | Non-contact card reader | |
| CN211702477U (en) | Wireless weak current dry contact adapter | |
| CN205608982U (en) | Infra red ray induction U dish | |
| CN208210377U (en) | A kind of human body sensing RGB lamp with power-failure memory | |
| CN210201806U (en) | Miniaturized infrared switch module | |
| CN208156199U (en) | positioning and communication system based on SIM868 | |
| CN208240334U (en) | A kind of sound broadcasting device based on RFID and ZigBee | |
| CN208314492U (en) | A kind of USB interface-based sender unit | |
| CN208335392U (en) | A kind of low-power consumption two dimensional code payment circuit | |
| CN105069878A (en) | Gate inhibition controller | |
| CN204496239U (en) | A kind of intelligent monitoring equipment with Tracking Recognition and positioning function | |
| CN202257523U (en) | Infrared identification circuit and infrared control terminal | |
| CN206097125U (en) | Concertina type detecting device | |
| CN203012802U (en) | Nurse terminal punch-card machine based on hospital information system | |
| CN205318397U (en) | A electronic tags reads ware for handing terminal | |
| CN206193891U (en) | Embedded platform two -dimensional code electric power multiplexer utensil management system | |
| CN218354028U (en) | Intelligent pet anti-loss device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 |