CN108011675A - A kind of OBU production test equipments - Google Patents
A kind of OBU production test equipments Download PDFInfo
- Publication number
- CN108011675A CN108011675A CN201711179916.8A CN201711179916A CN108011675A CN 108011675 A CN108011675 A CN 108011675A CN 201711179916 A CN201711179916 A CN 201711179916A CN 108011675 A CN108011675 A CN 108011675A
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- unit
- obu
- resistance
- detecting unit
- welded
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
-
- H04B5/73—
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- H04B5/77—
Abstract
The invention discloses a kind of OBU production test equipments, including circuit board, control unit is welded with the middle part of the circuit board, the left upper portion of the circuit board is welded with power supply unit, the left lower of described control unit passes through communication interface Connection Service device, the upper left-hand of the circuit board is welded with current detecting unit, the current detecting unit includes operational amplifier, resistance 1, resistance 2, switch 1 and switch 2, usb interface unit is welded with the right side of the current detecting unit, sound and light detecting unit is welded with the right side of the usb interface unit, the right side of the sound and light detecting unit is equipped with power detecting unit, the current detecting unit passes through conducting wire and OBU power supply electrical series.The OBU production test equipments, by integrating the overall structure of a variety of means of testing, greatly improve production efficiency.
Description
Technical field
The present invention relates to detection technique field, is specially a kind of OBU production test equipments.
Background technology
Radio frequency identification no-stop charging system is current state-of-the-art toll on the road and bridge's mode.By keeping out the wind glass installed in vehicle
Special short range communication between board units on glass and the drive test unit on charge station ETC tracks, utilizes computer networking
Technology carries out backstage settlement process with bank, so as to reach the mesh that vehicle is not required to stop with regard to that can pay expense by toll on the road and bridge station
, the circulation of OBU is huge, Market competition.The cost of relatively low OBU is very crucial to improving product competitiveness.
Therefore around production efficiency is improved, the production cost of reduction is that each equipment vendor is of concern.OBU needs to carry out multinomial when producing
Indexs measure, particularly transmission power and receiving sensitivity inspection, generally requires expensive radio frequency instrument；Electricity under various states
Stream detection is tested, it is necessary to current tester plus artificial judgment sound, display screen etc., these all considerably increase production cost,
Therefore we have proposed a kind of OBU production test equipments.
The content of the invention
It is an object of the invention to provide a kind of OBU production test equipments, to solve proposed in the above background technology ask
Topic.
To achieve the above object, the present invention provides following technical solution：A kind of OBU production test equipments, including circuit board,
Control unit is welded with the middle part of the circuit board, the left upper portion of the circuit board is welded with power supply unit, and the control is single
The left lower of member is welded with current detecting unit, the electricity by conducting wire Connection Service device, the upper left-hand of the circuit board
Flowing detection unit includes operational amplifier, resistance 1, resistance 2, switch 1 and switch 2, the right side welding of the current detecting unit
There is usb interface unit, sound and light detecting unit, the right side of the sound and light detecting unit are welded with the right side of the usb interface unit
Equipped with power detecting unit, the current detecting unit is led to by conducting wire and OBU power supply electrical series, the sound and light detecting unit
Cross set port on circuit boards with OBU buzzers and the contactless connection of OBU display screens, on the right end of the circuit board
Portion is welded with antenna element, and the downside of the antenna element is equipped with mode controlling unit, the lower left side welding of the circuit board
There is Transmit-Receive Unit, power adjustment unit is welded with the right side of the Transmit-Receive Unit, the right side of the power adjustment unit is equipped with coupling
Close unit, described control unit and power supply unit, current detecting unit, usb interface unit, sound and light detecting unit, power detection
Unit, mode controlling unit, Transmit-Receive Unit and power adjustment unit electrical series, the antenna element, mode controlling unit, coupling
Close unit, power adjustment unit and Transmit-Receive Unit electrical series successively；The antenna element is using wireless test pattern connection OBU
Antenna；The circuit board is provided with radio frequency connector close to the side of antenna element, and radio frequency connector connects with mode controlling unit
Connect, radio frequency connector connects external antenna and OBU aerial radio communications by RF coaxial line.
Preferably, the sound and light detecting unit is by setting port on circuit boards to be shown with OBU buzzers and OBU
Shield contactless connection.
Preferably, the current detecting unit and the OBU power supplys being arranged on outside the equipment are electrically connected, the power interface
With switching 2 electrical series, the switch 2 and 2 electrical series of resistance 1 and resistance, the resistance 1 and resistance 2 are electrically in parallel, described
Resistance 2 and 1 electrical series of switch, the switch 1 and switch 2 and control signal electrical series, the resistance 1 and operational amplifier
Electrical series, the output terminal of the operational amplifier pass through a/d converter and control unit electrical series.
Preferably, one group of DC power converter built in the power supply unit, work is converted into by the DC voltage of input
3.6V voltages needed for 12V/24V voltages needed for required 3.3V, 5.0V voltage, exterior I O signals and tested OBU.
Preferably, the resistance 1 is the resistance of 10K, and the resistance 2 is the resistance of 1 Ω.
Preferably, the model MAX4238 of the operational amplifier.
Compared with prior art, the beneficial effects of the invention are as follows：The OBU production test equipments, by integrating a variety of tests
The overall structure of means, level of integrated system is high, eliminates test equipment cabinet, the place smaller of occupancy.Can carry out OBU transmittings,
Receive the test items such as RF index test, operating current, quiescent current index test, buzzer, display screen test.System cost
Lower, the radio frequency instrument and signal source for eliminating costliness are rented, and eliminate frequency spectrograph and signal source.Greatly reduce whole life
The expenditure of production instrument and equipment improves production efficiency, and since level of integrated system is high, test station can be concentrated more, reduce station
Between convergence time, while reduce buzzer and display screen artificial judgment link；By the structure equipped with current detecting unit,
So that the detection enhanced convenience of equipment, Data Detection it is more accurate.
Brief description of the drawings
Fig. 1 is principle schematic diagram of the present invention；
Fig. 2 is current detecting unit principle schematic of the present invention.
In figure：1 circuit board, 2 control units, 3 servers, 4 power supply units, 5 current detecting units, 6USB interface units,
7 sound and light detecting units, 8 power detecting units, 12 mode controlling units, 13 antenna elements, 14OBU antennas, 15 Transmit-Receive Units, 16
Power adjustment unit, 17 coupling units.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of OBU production test equipments, including circuit board 1, institute
The middle part for stating circuit board 1 is welded with control unit 2, and control unit 2 is the core control centre of equipment, controls the work(of unit
The execution of energy, the left upper portion of the circuit board 1 are welded with power supply unit 4, one group of DC power supply conversion built in power supply unit 4
Device, the DC voltage of input is converted into 3.3V, 5.0V voltage needed for work, 12V/24V voltages needed for exterior I O signals and
3.6V voltages needed for tested OBU, power supply unit 4 provide power supply for the work of equipment, and the left lower of described control unit 2 leads to
Conducting wire Connection Service device 3 is crossed, the upper left-hand of the circuit board 1 is welded with current detecting unit 5, the current detecting unit 5
It is electrically connected with the OBU power supplys being arranged on outside the equipment, the power interface and 2 electrical series of switch, the switch 2 and resistance
1 and 2 electrical series of resistance, the resistance 1 and resistance 2 are electrically in parallel, the resistance 2 and 1 electrical series of switch, the switch 1
With switch 2 and control signal electrical series, the resistance 1 and operational amplifier electrical series, the model of the operational amplifier
For MAX4238, the output terminal of the operational amplifier passes through a/d converter and 2 electrical series of control unit.The current detecting
Unit 5 includes operational amplifier, resistance 1, resistance 2, switch 1 and switch 2, and the resistance 1 is the resistance of 10K, and the resistance 2 is
The resistance of 1 Ω, in 5 detection process of current detecting unit, operational amplifier is responsible for being put the voltage at detection resistance both ends
Greatly, analog-to-digital conversion module of the amplified signal to control unit is changed into digital signal.The precision electricity that resistance 1 is 10K ohm
Resistance, for OBU equipment, weak current, electric current produce pressure drop by resistance, are put by operational amplifier in a dormant state
Digital signal is changed into after big.Resistance 2 is 1 ohm of precision resistance, and larger current detects when being worked normally for OBU equipment, electricity
Stream produces pressure drop by resistance, and digital signal is changed into after operational amplifier amplifies.Switch 1 is used cooperatively with resistance 2, OBU
When equipment works normally, the closure of switch 1, resistance 1 and 1 parallel connection of resistance act on circuit, and equivalent parallel resistance is approximately equal to resistance 2.
During OBU equipment deep-sleeps, switch 1 disconnects, and only resistance 1 works, and the control OBU power supply power-on and power-off of switch 2, OBU is set during disconnection
Standby lower electricity, OBU device powers during closure.The right side of the current detecting unit 5 is welded with usb interface unit 6, and the USB connects
The right side of mouth unit 6 is welded with sound and light detecting unit 7, and the right side of the sound and light detecting unit 7 is equipped with power detecting unit 8, institute
Sound and light detecting unit 7 and OBU buzzers and the contactless connection of OBU display screens are stated, the right end upper weld of the circuit board 1 has
Antenna element 13, antenna element 13 is using wireless test pattern connection OBU antennas 14；Circuit board 1 close to antenna element 13 one
Side is provided with radio frequency connector 141, and radio frequency connector 141 is connected with mode controlling unit 12, and radio frequency connector 141 passes through radio frequency
Coaxial line connects external antenna and 14 wireless communication of OBU antennas；The downside of the antenna element 13 is equipped with mode controlling unit 12,
The lower left side of the circuit board 1 is welded with Transmit-Receive Unit 15, and the right side of the Transmit-Receive Unit 15 is welded with power adjustment unit
16, the right side of the power adjustment unit 16 is equipped with coupling unit 17, described control unit 2 and power supply unit 4, current detecting list
Member 5, usb interface unit 6, sound and light detecting unit 7, power detecting unit 8, mode controlling unit 12, Transmit-Receive Unit 15 and power
16 electrical series of adjustment unit, the antenna element 13, mode controlling unit 12, coupling unit 17,16 and of power adjustment unit
The electrical series successively of Transmit-Receive Unit 15.
Operation principle：For OBU production test equipments when being worked, control unit 2 is the core control centre of equipment, is controlled
The execution of the function of unit processed, the detection in real time respectively of current detecting unit 5, sound and light detecting unit 7 and power detecting unit 8
Electric current, whether normal and power supply the power of the work of OBU buzzers 10 and OBU display screens 11 of OBU power supplys 9, and control list
Member 2, which is delivered to the information of detection in the server 3 of creation data, carries out transmission test result, and in current detecting unit 5
In detection process, operational amplifier is responsible for the voltage at detection resistance both ends being amplified, and amplified signal is single to control
The analog-to-digital conversion module of member changes into digital signal.Resistance 1 is 10K ohm of precision resistance, and dormancy shape is in for OBU equipment
State weak current, electric current produce pressure drop by resistance, digital signal are changed into after operational amplifier amplifies.Resistance 2 is 1
The precision resistance of ohm, larger current detects when being worked normally for OBU equipment, and electric current produces pressure drop by resistance, by fortune
Digital signal is changed into after calculating amplifier amplification.Switch 1 is used cooperatively with resistance 2, when OBU equipment works normally, the closure of switch 1,
Resistance 1 and 1 parallel connection of resistance act on circuit, and equivalent parallel resistance is approximately equal to resistance 2；During OBU equipment deep-sleeps, switch 1 is disconnected
Open, only resistance 1 works, the control OBU power supply power-on and power-off of switch 2, electricity under OBU equipment during disconnection, OBU device powers during closure.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of OBU production test equipments, including circuit board (1), it is characterised in that：It is welded with the middle part of the circuit board (1)
Control unit (2), the left upper portion of the circuit board (1) are welded with power supply unit (4), under the left side of described control unit (2)
Portion is welded with current detecting unit (5), the electric current by conducting wire Connection Service device (3), the upper left-hand of the circuit board (1)
Detection unit (5) includes operational amplifier, resistance 1, resistance 2, switch 1 and switch 2, the right side of the current detecting unit (5)
Usb interface unit (6) is welded with, sound and light detecting unit (7), the acousto-optic inspection are welded with the right side of the usb interface unit (6)
The right side for surveying unit (7) is equipped with power detecting unit (8), and the right end upper weld of the circuit board (1) has antenna element (13),
The downside of the antenna element (13) is equipped with mode controlling unit (12), and the lower left side of the circuit board (1) is welded with transmitting-receiving
Unit (15), is welded with power adjustment unit (16) on the right side of the Transmit-Receive Unit (15), the power adjustment unit (16)
Right side is equipped with coupling unit (17), described control unit (2) and power supply unit (4), current detecting unit (5), usb interface unit
(6), sound and light detecting unit (7), power detecting unit (8), mode controlling unit (12), Transmit-Receive Unit (15) and power adjustment list
First (16) electrical series, the antenna element (13), mode controlling unit (12), coupling unit (17), power adjustment unit
(16) and Transmit-Receive Unit (15) electrical series successively；The antenna element (13) is using wireless test pattern connection OBU antennas
(14)；The circuit board (1) is provided with radio frequency connector (141), radio frequency connector (141) close to the side of antenna element (13)
It is connected with mode controlling unit (12), radio frequency connector (141) connects external antenna and OBU antennas (14) by RF coaxial line
Wireless communication.
A kind of 2. OBU production test equipments according to claim 1, it is characterised in that：The sound and light detecting unit (7) with
OBU buzzers and the contactless connection of OBU display screens.
A kind of 3. OBU production test equipments according to claim 1, it is characterised in that：The current detecting unit (5) with
The OBU power supplys being arranged on outside the equipment are electrically connected, the power interface (91) and 2 electrical series of switch, the switch 2 and electricity
Resistance 1 and 2 electrical series of resistance, the resistance 1 and resistance 2 are electrically in parallel, the resistance 2 and 1 electrical series of switch, the switch
1 and switch 2 and control signal electrical series, the resistance 1 and operational amplifier electrical series, the output of the operational amplifier
End passes through a/d converter and control unit (2) electrical series.
A kind of 4. OBU production test equipments according to claim 1, it is characterised in that：One built in the power supply unit (4)
Group DC power converter, 3.3V, 5.0V voltage needed for work are converted into, needed for exterior I O signals by the DC voltage of input
3.6V voltages needed for 12V/24V voltages and tested OBU.
A kind of 5. OBU production test equipments according to claim 1, it is characterised in that：The resistance 1 is the resistance of 10K,
The resistance 2 is the resistance of 1 Ω.
A kind of 6. OBU production test equipments according to claim 1, it is characterised in that：The model of the operational amplifier
For MAX4238.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179916.8A CN108011675A (en) | 2017-11-23 | 2017-11-23 | A kind of OBU production test equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179916.8A CN108011675A (en) | 2017-11-23 | 2017-11-23 | A kind of OBU production test equipments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108011675A true CN108011675A (en) | 2018-05-08 |
Family
ID=62053526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711179916.8A Pending CN108011675A (en) | 2017-11-23 | 2017-11-23 | A kind of OBU production test equipments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108011675A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648425A (en) * | 2019-09-20 | 2020-01-03 | 天地融科技股份有限公司 | Detection method and system for vehicle-mounted unit |
| CN111553995A (en) * | 2020-04-30 | 2020-08-18 | 重庆长安汽车股份有限公司 | Method, apparatus, system computer readable storage medium for ETC detection of vehicles off-line from production line |
| CN112748282A (en) * | 2020-12-21 | 2021-05-04 | 航天信息股份有限公司 | OBU radio frequency detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203204101U (en) * | 2013-04-15 | 2013-09-18 | 深圳市金溢科技有限公司 | Comprehensive tester |
| CN204078035U (en) * | 2014-09-03 | 2015-01-07 | 南京诺依曼智能科技有限公司 | A kind of intelligent boat-carrying OBU based on wireless sensor technology |
| CN205621079U (en) * | 2016-03-31 | 2016-10-05 | 上海捷赴达电子科技有限公司 | On -vehicle OBU equipment |
| CN106411425A (en) * | 2016-05-30 | 2017-02-15 | 天津中兴智联科技有限公司 | Microwave dedicated short range communication test system |
-
2017
- 2017-11-23 CN CN201711179916.8A patent/CN108011675A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203204101U (en) * | 2013-04-15 | 2013-09-18 | 深圳市金溢科技有限公司 | Comprehensive tester |
| CN204078035U (en) * | 2014-09-03 | 2015-01-07 | 南京诺依曼智能科技有限公司 | A kind of intelligent boat-carrying OBU based on wireless sensor technology |
| CN205621079U (en) * | 2016-03-31 | 2016-10-05 | 上海捷赴达电子科技有限公司 | On -vehicle OBU equipment |
| CN106411425A (en) * | 2016-05-30 | 2017-02-15 | 天津中兴智联科技有限公司 | Microwave dedicated short range communication test system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648425A (en) * | 2019-09-20 | 2020-01-03 | 天地融科技股份有限公司 | Detection method and system for vehicle-mounted unit |
| CN110648425B (en) * | 2019-09-20 | 2021-05-14 | 天地融科技股份有限公司 | Detection method and system for vehicle-mounted unit |
| CN111553995A (en) * | 2020-04-30 | 2020-08-18 | 重庆长安汽车股份有限公司 | Method, apparatus, system computer readable storage medium for ETC detection of vehicles off-line from production line |
| CN111553995B (en) * | 2020-04-30 | 2022-05-17 | 重庆长安汽车股份有限公司 | Method, apparatus, system computer readable storage medium for ETC detection of vehicles off-line from production line |
| CN112748282A (en) * | 2020-12-21 | 2021-05-04 | 航天信息股份有限公司 | OBU radio frequency detection device |
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