CN104794506B - It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal - Google Patents
It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal Download PDFInfo
- Publication number
- CN104794506B CN104794506B CN201510174482.7A CN201510174482A CN104794506B CN 104794506 B CN104794506 B CN 104794506B CN 201510174482 A CN201510174482 A CN 201510174482A CN 104794506 B CN104794506 B CN 104794506B
- Authority
- CN
- China
- Prior art keywords
- laser ranging
- laser
- read
- radio
- main control
- 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
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses it is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal.The terminal includes main control unit, radio frequency unit and memory cell, laser ranging program is carried on internet-of-things terminal, laser ranging probe is installed in terminal back housing, the transmitting of laser ranging probe and reception window are exposed at the outside of the housing at the back side, radio-frequency antenna is arranged in the housing at the terminal back side, and positioned at the lower section of laser ranging probe, the main radiation direction of radio-frequency antenna is perpendicular to back side of shell surface, the main radiation direction of the direction of the launch of laser ranging probe parallel to radio-frequency antenna.The design adds a laser ranging probe on original hand-held internet-of-things terminal, causes complete machine to have the function of adjusting transmission power automatically according to target range after coordinating software, reduces the labor intensity of operating personnel.Avoid simultaneously and distant object is misread, so as to add the reliability of the availability of complete machine and system.
Description
Technical field
The present invention relates to hand-held internet-of-things terminal machine, more particularly to a kind of fields such as electronic license plate, ETC that are applied to utilize
Laser ranging can adjust automatically transmission power internet-of-things terminal.
Background technology
Hand-held internet-of-things terminal is widely used, but in the operating process such as ETC, the hair fastener of electronic license plate, charge, warp
The unascertainable problem of distance of terminal transmission antenna to label is commonly encountered, because the power of transmitting antenna can influence the knowledge of label
Distance is read, when preparing to read an above target, because distance is near, transmission power crosses Sheng, can read label below simultaneously,
It may cause to misread.Person is not at this moment needed to use to control transmitting antenna to come to by the distance of reading target or the manual transmission power that reduces
Evade and misreading, very big inconvenience is brought to user.
The content of the invention
In view of the problem of prior art is present and defect, the present invention provides one kind can adjust automatically transmitting using laser ranging
The internet-of-things terminal of power, by designing the hand-held internet-of-things terminal scheme with automatic range function, terminal is being known every time
Before reading label, first pass through laser ranging mode and determine the distance between target, then according to itself default power distribution number
According to adjustment transmission power so that the just covering of recognition distance is read target, and avoid that different distance brings misreads, and also avoids
The inconvenience for setting transmission power to bring manually every time.
The present invention is realized by such technical scheme：It is a kind of can adjust automatically transmission power using laser ranging
Internet-of-things terminal, including main control unit, radio frequency unit and memory cell, it is characterised in that on the hand-held internet-of-things terminal
With laser ranging program, laser ranging probe, the transmitting and reception of laser ranging probe are installed in terminal back housing
Window is exposed at the outside of the housing at the back side, and terminal is arranged on for launching and being read the radio-frequency antenna of radiofrequency signal of destinations traffic
In the housing at the back side, and positioned at the lower section of laser ranging probe, the main radiation direction of radio-frequency antenna perpendicular to back side of shell surface,
Main radiation direction of the direction of the launch of laser ranging probe parallel to radio-frequency antenna.
Main control unit of the present invention uses Cortex-A7 processors, Cortex-A7 processors respectively with LPDDR3 internal memories
Connected with electric power management circuit；The memory cell is connected by pin SDIO with Cortex-A7 processors；The laser ranging
Probe is connected by the first UART interface with Cortex-A7 processors；The radio frequency unit by the second UART interface with
Cortex-A7 processors connect；The radio-frequency antenna is connected by radio frequency line with radio frequency unit.
The invention has the advantages that：The design increases a Laser Measuring on original hand-held internet-of-things terminal
Away from probe, cause complete machine that there is the function of adjusting transmission power automatically according to target range after coordinating software, without operating personnel
The manual distance for setting or deliberately keeping and be read target every time, reduce the labor intensity of operating personnel.Avoid simultaneously
Distant object is misread, so as to adding the reliability of the availability of complete machine and system.
Brief description of the drawings
Fig. 1 is structure longitudinal direction of the present invention schematic cross-sectional view；
Fig. 2 is circuit catenation principle block diagram of the present invention；
Fig. 3 is calibration environment Organization Chart of the present invention；
Workflow diagram when Fig. 4 is present invention calibration；
Fig. 5 is use environment Organization Chart of the present invention；
Fig. 6 is the read-write flow chart when present invention uses.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described：
Reference picture 1, it is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal include main control unit 4,
Radio frequency unit 5 and memory cell 6, laser ranging program is carried on hand-held internet-of-things terminal, installed in terminal back housing 1
There is laser ranging probe 2, the transmitting of laser ranging probe 2 and reception window are exposed at the outside of the housing 1 at the back side, for transmitting and quilt
The radio-frequency antenna 3 for distinguishing the radiofrequency signal of destinations traffic is arranged in the housing 1 at the terminal back side, and is located at laser ranging probe 2
Lower section, the main radiation direction 3.1 of radio-frequency antenna 3 is perpendicular to the backside surface of housing 1, the direction of the launch 2.1 of laser ranging probe 2
Parallel to the main radiation direction 3.1 of radio-frequency antenna 3.
Laser ranging probe is arranged in machine back housing, and it is launched and received window and is exposed at outside the housing at the back side, just
In the transmitting and reception of laser.Because housing is plastic material, radiofrequency signal can pass through housing, and therefore, radio-frequency antenna is not required to
Expose housing, radio-frequency antenna is arranged in the housing at the machine back side.During installation, the main radiation direction of radio-frequency antenna perpendicular to
Machine backside surface.Main radiation direction of the direction of the launch of laser ranging probe parallel to radio-frequency antenna.It can so keep sharp
Ligh-ranging probe measurement to distance it is close to the distance between target is read substantially with hand-held internet-of-things terminal machine.
The side installation display screen 7 of internet-of-things terminal, the lower section installation keyboard 8 of display screen 7, housing 1 is built with battery 9.
Reference picture 2, the main control unit of internet-of-things terminal use Cortex-A7 processors, Cortex-A7 processors respectively with
LPDDR3 internal memories connect with electric power management circuit；Memory cell is connected by pin SDIO with Cortex-A7 processors；Laser Measuring
It is connected away from probe by the first UART interface with Cortex-A7 processors；Radio frequency unit passes through the second UART interface and Cortex-
A7 processors connect；Radio-frequency antenna is connected by radio frequency line with radio frequency unit.Main control unit also includes other additional devices to tie up
Hold the other conditions needed for system operation.
Reference picture 3 and Fig. 4, the laser ranging program of internet-of-things terminal includes laser ranging calibration flow and laser ranging is read
Flow is write, laser ranging calibration flow has the following steps：
Step 1 is attached to target is read on vertical wall, and internet-of-things terminal is positioned over and is read target relatively
The position of certain distance, the alignment of radio-frequency antenna main radiation direction is set to be read target；
Step 2 starts calibration workflow user interface, and main control unit sends distance measuring instruction to laser ranging probe first, swashs
Ligh-ranging probe carries out ranging, measures terminal and sends out laser distance measuring to the distance for being read target, laser ranging probe
It is sent to main control unit；
Step 3 main control units receive laser ranging probe return laser distance measuring data, according to laser measurement away from
From by with a distance from machine memory storage/power corresponding table obtains transmission power level, and the configuration of this transmission power level is sent into radio frequency
Unit；Radio frequency unit receives the transmission power level of configuration, and write power configuration device；
Step 4 main control units start " instruction is checked in transmission " operation, and transmission is checked into instruction and is sent to radio frequency unit, is penetrated
Transmission by radio-frequency antenna is checked radiofrequency signal and is sent to by frequency unit is read target；
Step 5 main control units judge be read target whether return information position signalling, if there is no return information position
Signal, then main control unit startup " increase power " operation, is allocated to radio frequency unit by the transmission power level for producing new, then proceedes to
Subsequent step is performed, target return information position is read until calibration；If there is return information position signalling, preserve away from
From with power data to memory cell；
After step 6 confirms result, laser ranging calibration flow terminates.
Main control unit starts " increase power " operation, and the operation, which waits, is read target return response message.If
Fail to receive response in 10ms, operation is determined as "No", then starts " increase power " operation, according to the minimum of radio frequency unit to most
Powerful 1/20 stepping increases one stepping of transmission power, then repeat step three to step 5, until receiving label
Untill return signal, it is determined as "Yes", then into step 6.
Predetermined power data in memory cell are obtained by calibrating.During calibration, it individually will be read label first and be attached to
Wall or its can be so that on the surface of reflection laser, terminating machine be positioned over apart from label distance, antenna primary radiation by operator
Direction is directed at label, fixes.Start calibration special-purpose software, calibration software controls laser ranging probe to carry out ranging first, so
Transmission power is incrementally increased according to the step value of software set since minimum power afterwards, until receiving the return letter of label
Untill number, transmission power now and the distance value measured are recorded, turns into one group of predetermined power.The like, it can complete multiple
The calibration of distance value.
Reference picture 5 and Fig. 6, the laser ranging read-write flow of internet-of-things terminal have the following steps：
The radio frequency main radiation direction alignment of internet-of-things terminal machine is read target by step 1；
Step 2 starts read-write workflow user interface, and main control unit sends distance measuring instruction to laser ranging probe first, swashs
Ligh-ranging probe carries out ranging, measures terminal and sends out laser distance measuring to the distance for being read target, laser ranging probe
It is sent to main control unit；
Step 3 main control units receive laser ranging probe return laser distance measuring data, according to laser measurement away from
From being found in the distance stored in calibrating flow/power corresponding table and the immediate transmission power of present laser measurement distance
Value, and the configuration of this transmission power level is sent to radio frequency unit；Radio frequency unit receives the transmission power level of configuration, and write power
Configuration device；
Step 4 main control units initiate " formal read-write operation " instruction；
After step 5 confirms read-write result, laser ranging read-write flow terminates.
Working environment framework when internet-of-things terminal whole system uses is as shown in figure 5, when in use, by internet-of-things terminal
The radio frequency main radiation direction alignment of machine is read target, and operator starts recognition software.The main control unit of internet-of-things terminal machine is first
First start ranging, laser ranging probe sends laser, and laser, which runs into, to be read label surface and be reflected back, laser ranging probe
Probe can be calculated to the distance for being read target after the laser of return according to the time difference by receiving.The master of internet-of-things terminal machine
Control unit looks into " distance-predetermined power value " corresponding table according to distance value from memory cell, corresponding performance number is read out, by power
Value is loaded into radio frequency unit, and radio frequency unit adjusts transmission power according to performance number so that is read the performance number that intended recipient arrives
Just reach requirement, and be distal to be read target other target labels do not reach wake-up needed for power, only waken up so as to reach
Target is read, does not misread the purpose of other targets.
When hand-held internet-of-things terminal formally uses, if measuring distance not in existing predetermined power value point,
Two points minimum larger and smaller than the absolute value of this distance are then taken respectively, the performance number of this range points are estimated, by this work(
Rate value sends radio frequency unit adjustment transmission power.
Claims (2)
1. it is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal, including main control unit, radio frequency unit and
Memory cell, it is characterised in that laser ranging program is carried on the internet-of-things terminal, in terminal back housing（1）Interior installation
There is laser ranging probe（2）, laser ranging probe（2）Transmitting and receive window and be exposed at the housing at the back side（1）Outside, for sending out
Penetrate and be read the radio-frequency antenna of the radiofrequency signal of destinations traffic（3）Housing installed in the terminal back side（1）It is interior, and it is located at laser
Range finding probe（2）Lower section, radio-frequency antenna（3）Main radiation direction（3.1）Perpendicular to housing（1）Backside surface, laser ranging
Probe（2）The direction of the launch（2.1）Parallel to radio-frequency antenna（3）Main radiation direction（3.1）；
The laser ranging program includes laser ranging calibration flow and laser ranging read-write flow, and laser ranging calibration flow has
Following steps：
Step 1 is attached to target is read on vertical wall, and hand-held internet-of-things terminal is positioned over and is read mesh relatively
The position of certain distance is marked, the alignment of radio-frequency antenna main radiation direction is read target；
Step 2 starts calibration workflow user interface, and main control unit sends distance measuring instruction, Laser Measuring to laser ranging probe first
Ranging is carried out away from probe, terminal is measured and is sent to laser distance measuring to the distance for being read target, laser ranging probe
Main control unit；
Step 3 main control units receive the laser distance measuring data that laser ranging probe returns, and are led to according to laser distance measuring
Distance/power the corresponding table for crossing machine memory storage obtains transmission power level, and the configuration of this transmission power level is sent into radio frequency unit；
Radio frequency unit receives the transmission power level of configuration, and write power configuration device；
Step 4 main control units start " instruction is checked in transmission " operation, and transmission is checked into instruction and is sent to radio frequency unit, radio frequency list
Transmission by radio-frequency antenna is checked radiofrequency signal and is sent to by member is read target；
Step 5 main control units judge be read target whether return information position signalling, if there is no return information position signalling,
Then main control unit starts " increase power " operation, and the transmission power level for producing new is allocated into radio frequency unit, then proceedes to perform
Subsequent step, target return information position is read until calibration；If there is return information position signalling, preserve distance and
Power data is to memory cell；
After step 6 confirms result, laser ranging calibration flow terminates；
The laser ranging read-write flow has the following steps：
The radio frequency main radiation direction alignment of internet-of-things terminal machine is read target by step 1；
Step 2 starts read-write workflow user interface, and main control unit sends distance measuring instruction, Laser Measuring to laser ranging probe first
Ranging is carried out away from probe, terminal is measured and is sent to laser distance measuring to the distance for being read target, laser ranging probe
Main control unit；
Step 3 main control units receive the laser distance measuring data that laser ranging probe returns, according to laser distance measuring,
Found in calibration flow in distance/power corresponding table for storing with the immediate transmission power level of present laser measurement distance, and
The configuration of this transmission power level is sent to radio frequency unit；Radio frequency unit receives the transmission power level of configuration, and write power configures
Device；
Step 4 main control units initiate " formal read-write operation " instruction；
After step 5 confirms read-write result, laser ranging read-write flow terminates.
2. it is according to claim 1 it is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal, it is special
Sign is, the main control unit uses Cortex-A7 processors, Cortex-A7 processors respectively with LPDDR3 internal memories and power supply
Manage circuit connection；The memory cell is connected by pin SDIO with Cortex-A7 processors；The laser ranging probe leads to
The first UART interface is crossed to be connected with Cortex-A7 processors；The radio frequency unit passes through at the second UART interface and Cortex-A7
Manage device connection；The radio-frequency antenna is connected by radio frequency line with radio frequency unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174482.7A CN104794506B (en) | 2015-04-14 | 2015-04-14 | It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174482.7A CN104794506B (en) | 2015-04-14 | 2015-04-14 | It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104794506A CN104794506A (en) | 2015-07-22 |
| CN104794506B true CN104794506B (en) | 2017-11-14 |
Family
ID=53559293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510174482.7A Active CN104794506B (en) | 2015-04-14 | 2015-04-14 | It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104794506B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11971487B2 (en) * | 2016-02-19 | 2024-04-30 | Pioneer Corporation | Feature data structure, control device, storage device, control method, program and storage medium |
| EP3567427B1 (en) | 2018-03-12 | 2023-12-13 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control method and control device for a depth camera |
| CN110674656B (en) * | 2019-09-18 | 2024-05-31 | 深圳盈达信息科技有限公司 | Radio frequency identification reader and method of use thereof |
| CN110674657A (en) * | 2019-09-18 | 2020-01-10 | 深圳盈达机器视觉技术有限公司 | Radio frequency identification reader and method of use |
| CN110633591A (en) * | 2019-09-18 | 2019-12-31 | 深圳盈达机器视觉技术有限公司 | Radio frequency identification reader and method of use |
| CN110647777A (en) * | 2019-09-18 | 2020-01-03 | 深圳盈达机器视觉技术有限公司 | Radio frequency identification reader and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7787886B2 (en) * | 2003-02-24 | 2010-08-31 | Invisitrack, Inc. | System and method for locating a target using RFID |
| CN102176009A (en) * | 2011-01-24 | 2011-09-07 | 北京北大千方科技有限公司 | Microwave distance measurement-based antenna positioning method and device |
| CN102663328A (en) * | 2012-05-25 | 2012-09-12 | 中山大学 | Method for improving electron label reading efficiency based on power control |
| CN103778396A (en) * | 2013-05-21 | 2014-05-07 | 深圳市证通电子股份有限公司 | RFID system and method for automatically adjusting emission field intensity thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770009B (en) * | 2009-01-06 | 2014-05-21 | 成都西谷曙光数字技术有限公司 | New accurate and practical radio-frequency positioning technology |
-
2015
- 2015-04-14 CN CN201510174482.7A patent/CN104794506B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7787886B2 (en) * | 2003-02-24 | 2010-08-31 | Invisitrack, Inc. | System and method for locating a target using RFID |
| CN102176009A (en) * | 2011-01-24 | 2011-09-07 | 北京北大千方科技有限公司 | Microwave distance measurement-based antenna positioning method and device |
| CN102663328A (en) * | 2012-05-25 | 2012-09-12 | 中山大学 | Method for improving electron label reading efficiency based on power control |
| CN103778396A (en) * | 2013-05-21 | 2014-05-07 | 深圳市证通电子股份有限公司 | RFID system and method for automatically adjusting emission field intensity thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104794506A (en) | 2015-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104794506B (en) | It is a kind of using laser ranging can adjust automatically transmission power internet-of-things terminal | |
| CN104809488B (en) | It is a kind of using ultrasonic ranging can adjust automatically transmission power internet-of-things terminal | |
| CN110991575B (en) | Asset inventory method and device, readable storage medium and robot | |
| CN106781531A (en) | A kind of method for detecting parking stalls and device | |
| US20160187116A1 (en) | Method and apparatus for logging electronic detonators | |
| CN109462448A (en) | A kind of radio frequency test method, mobile terminal and storage medium | |
| CN104215961A (en) | Radar apparatus and method of measuring radar performance | |
| US20200359504A1 (en) | Communication system including antennas on flexible circuit board | |
| US20180109331A1 (en) | Systems and methods for antenna pattern measurement | |
| CN103487676A (en) | Method and device used for testing performance of RFID electronic tag | |
| CN106081080A (en) | The patrol unmanned machine of intelligent electric power | |
| EP3190718A1 (en) | Antenna function extension apparatus and device and method for function extension of antenna | |
| US8284030B2 (en) | Method and device for recognizing functional states in RFID or remote sensor systems | |
| CN106301622B (en) | Interference detection method and Interference Detection system | |
| CN113364534B (en) | Antenna test method, device and computer readable storage medium | |
| CN204557523U (en) | With the internet-of-things terminal of laser ranging function | |
| CN204557524U (en) | With the internet-of-things terminal of ultrasonic ranging function | |
| CN110049176B (en) | Interface display method, device, equipment and storage medium of double-screen terminal | |
| CN105487412B (en) | A kind of acquisition cascade method and system of remotely electricity tune antenna control unit | |
| US10588108B2 (en) | Locating method and a locating device | |
| CN110501681B (en) | Doppler radar chip verification method and device | |
| CN111337907B (en) | Near object sensor calibration method, device, equipment and computer medium | |
| CN204707133U (en) | A kind of synchronization accuracy test macro | |
| CN204442025U (en) | For the wireless power supply system of household electrical appliance | |
| CN113093103A (en) | Underwater robot positioning detection method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 300462 Binhai New Area, Tianjin economic and Technological Development Zone, North Street, No. 141 Applicant after: Tianjin 712 Communications Broadcasting Limited by Share Ltd Address before: 300462 Binhai New Area, Tianjin economic and Technological Development Zone, North Street, No. 141 Applicant before: Tianjin 712 Communication Broadcast Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |