CN209690515U - A kind of cold chain vehicle monitor terminal based on Beidou positioning - Google Patents
A kind of cold chain vehicle monitor terminal based on Beidou positioning Download PDFInfo
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- CN209690515U CN209690515U CN201920200241.9U CN201920200241U CN209690515U CN 209690515 U CN209690515 U CN 209690515U CN 201920200241 U CN201920200241 U CN 201920200241U CN 209690515 U CN209690515 U CN 209690515U
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Abstract
The utility model discloses a kind of cold chain vehicle monitor terminals based on Beidou positioning, including master controller, and the image acquisition circuit, Big Dipper positioning circuit and the radio communication circuit that connect with master controller；Image collection chip and multiple capacitors are provided in image acquisition circuit；The anode of the multiple capacitor is respectively connect with each pin of image collection chip respectively, cathode ground connection.The utility model is using Beidou positioning, Image Acquisition and data transmission technology, the position of vehicle, interior image are acquired in real time, and by the information of vehicles real-time transmission of monitoring to monitoring center, the real-time parameters information such as vehicle location, interior image are provided for Cold Chain Logistics vehicle monitoring system；Realize real-time effective monitoring to Cold Chain Logistics vehicle remote state.
Description
Technical field
The utility model relates to a kind of vehicle monitor terminal devices, and in particular to a kind of positioning of cold chain vehicle and Image Acquisition
Vehicle monitor terminal.
Background technique
With the rapid development of automobile industry, the utilization of automobile is also more and more common.Meanwhile the car inside generated therewith
The stolen security incident of stolen or automobile is also more and more, and the safety and management of automobile are increasingly taken seriously.
Existing vehicle monitor terminal majority using GPS chip or video monitoring technology, come monitor vehicle position and
Interior safety；But existing screen monitoring technology can only be stored in the monitor terminal of itself, can not be connect with the external world,
Therefore, after vehicle-mounted monitoring system is damaged or is lost, can not screen in checking monitoring terminal so that automobile can not still be kept away
From suffering a loss.In addition, screen can be because the reasons such as voltage instability of monitoring device itself cause image even if saving screen
The job insecurity of acquisition system, so that there are unsharp problems for the screen of acquisition and image.
In addition, when automobile is integrally lost, since GPS chip haves the defects that covering is not comprehensive enough, so that automobile is determined
Position has certain deviation, can not accurately position.Furthermore when automobile is driven into remote rural area or mountain area, due to signal
Problem can not trace into vehicle.
Summary of the invention
For the above technical issues, it is whole to provide a kind of cold chain vehicle-mounted monitoring based on Beidou positioning for the technical program
End, can effectively solve the above problem.
The utility model is achieved through the following technical solutions:
A kind of cold chain vehicle monitor terminal based on Beidou positioning, including master controller, and connect with master controller
Image acquisition circuit, Big Dipper positioning circuit and radio communication circuit；Image collection chip and more is provided in image acquisition circuit
A capacitor；The anode of the multiple capacitor is respectively connect with each pin of image collection chip respectively, cathode ground connection.
Further, the input terminal of described image Acquisition Circuit is connected by the output end of SCCB bus and master controller,
The output end (by DO-D7) of image acquisition circuit is connect with the end I/O (VD0~VD7) of master controller, so that image acquisition circuit
Send the image data of acquisition to master controller in the state of specified, by master controller to the information of interior image parameter into
Row processing.
Further, the control terminal of the image acquisition circuit includes synchronization signal interface and interface clock signal.
Further, described image acquisition chip is using OV7670 module；There are two works for the OV7670 module
Make voltage, is the analog voltage between the core voltage of 1.8V and 2.45V-3.0V respectively.
Further, the multiple capacitor includes first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th electricity
Hold, the 6th capacitor；Wherein, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor anode
Respectively with the AVDD pin of OV7670 module, DOVDD pin, DVDD pin, VREF1 pin, VREF2 pin, RESET pin
Connection；The cathode ground connection of the first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor.
Further, it is provided with and is connect with satellite system, for the antenna of alignment by union in the Big Dipper positioning circuit.
Further, it is connected with by the antenna and the inductance of a 68nH of feed is provided to antenna.
Further, the core chips of the Big Dipper positioning circuit is using UM220 chip.
Further, filter capacitor is connected between VCC, VCC_RF and GND pin of the UM220 chip.
Further, the TIMEPULSE pin of the UM220 chip is connected with luminous two after the current-limiting resistance of series connection 1K
Pole pipe.
Further, the Big Dipper positioning circuit is connect with satellite system, obtains vehicle latitude and longitude information；Pass through serial ports again
It is connected with the serial ports USART of master controller, the information of positional parameter is transferred to by master controller by serial communication.By main control
Device handles the information of collected vehicle longitude and latitude.
Further, the radio communication circuit is obtained master controller and is sent by serial ports and master controller serial communication
Vehicle longitude and latitude, the data such as interior image parameter, then monitoring center is sent to by wireless network.
Further, the master controller is using STM32F103C8T6 chip；It is used in described image Acquisition Circuit
Be OV7670 chip, the radio communication circuit is using USR-LTE-7S4 chip；What the Big Dipper positioning circuit used
It is UM220-III N chip.
Further, the master controller obtains front end and is connected with power-switching circuit, and power-switching circuit is by alternating current
It is that master controller and entire circuit are powered that source, which is converted to the DC voltage between 1.8V and 2.45V-3.0V,.
(3) beneficial effect
The utility model proposes it is a kind of based on Beidou positioning cold chain vehicle monitor terminal, compared with prior art,
It has the advantages that
(1) this vehicle monitor terminal by image acquisition circuit, Big Dipper positioning circuit and radio communication circuit respectively with master
Controller connection can be received the data acquisition from master controller and be referred to by the connection of image acquisition circuit and master controller
It enables, realizes the Image Acquisition of vehicle interior, and by image information by data bus transmission to master controller, and be stored in SDRAM；
The positional parameter from Big Dipper positioning circuit vehicle is received by serial communication again, and data are parsed；Master controller is logical
It crosses radio communication circuit and the data frame of packing is sent to monitoring center.
(2) in image acquisition circuit, multiple decoupling capacitors are connected to image collection chip OV7670, by decoupling electricity
The anode of appearance is connected with the pin of OV7670, cathode ground connection；Increase the stability of image collection chip OV7670；And pass through
Voltage conversion circuit provides the simulation between the core voltage of 1.8V or so and 2.45V-3.0V for image collection chip OV7670
Voltage；Increase the stability of image acquisition circuit.Power supply passes through conversion circuit, respectively obtains corresponding core voltage and simulation electricity
Pressure value；Increased decoupling capacitor simultaneously can play the effect of filtering, guarantee the clarity of OV7670 modules acquiring data, and
The normal work communicated with master controller guarantees the integrality of data transmission.
(3) image acquisition circuit use OV7670 chip, small in size, operating voltage is low, provide monolithic VGA camera and
The institute of image processor is functional.Itself can by reduce or eliminate optics or electronic defects such as fixed pattern noise, support tail,
Bloom etc. improves picture quality, obtains clearly stable color image.OV7670 can be inputted by SCCB bus marco
Whole frame, sub-sampling, 8 image datas of various resolution ratio for taking the modes such as window.
(4) core in Big Dipper positioning circuit using UM220-III N chip as positioning circuit, it supports more satellite systems
System alignment by union acquires vehicle latitude and longitude information by the connection with satellite system, and Big Dipper positioning circuit passes through serial ports and master control
Device processed is connected, and receives microprocessor instruction, positional parameter is sent to master controller by serial ports.
(5) Big Dipper positioning circuit provides feed to antenna by the inductance of a 68nH.In order to guarantee system performance, In
Shunt capacitance be placed between UM220-III N-module VCC, VCC_RF and ground to improve the stability of voltage.When module positions
When information is effective, LED is with the frequency scintillation of 1Hz.VBAT is the power supply of inside modules RTC clock.
(6) radio communication circuit uses USR-LTE-7S4 module, only serial ports need to can be realized and arrive by being simply to set
The bi-directional data transparent transmission of network, the module receive the image data transmitted from master controller and Beidou by USB interface
Positional parameter, then ground monitoring center is sent data to by 4G communication, and receive the feedback command from monitoring center, it will
Feedback command is transferred to master controller.
(7) master controller uses the microprocessor STM32F103C8T6 of STMicw Electronics；STM32F103C8T6 is a
Based on the single-chip microcontroller of ARM 32 Cortex-M3 kernels, its Flash memory with 64 KB and 20 KB's
In addition SRAM memory is also integrated with peripheral hardware in piece very rich, have many advantages, such as that at low cost, speed is fast, cost performance is high.
Detailed description of the invention
Fig. 1 is overall structure schematic block diagram in the utility model.
Fig. 2 is the connection schematic diagram of power circuit in the utility model.
Fig. 3 is the circuit connection diagram of master controller in the utility model.
Fig. 4 is the circuit connection diagram of image acquisition circuit in the utility model.
Fig. 5 is the circuit connection diagram of Big Dipper positioning circuit in the utility model.
Fig. 6 is the circuit connection diagram of radio communication circuit in the utility model.
Specific embodiment
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.The described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Without departing from the design concept of the present utility model, ordinary people in the field does the technical solution of the utility model
All variations and modifications out, should fall within the protection scope of the present utility model.
Embodiment:
As shown in Figure 1, a kind of cold chain vehicle monitor terminal based on Beidou positioning, including master controller and voltage conversion electricity
Road, and the image acquisition circuit, Big Dipper positioning circuit and the radio communication circuit that are connect with master controller；The voltage conversion
Alternating voltage is converted into DC voltage and connect with master controller and each module by circuit, provides stabilization for master controller and each module
DC voltage.
As shown in Fig. 2, the voltage conversion circuit includes the power module IC1 for converting voltages into 3.3V DC voltage
1117-3.3V, and 3.3V voltage is converted to the power supply mould of the analog voltage between the core voltage of 1.8V and 2.45V-3.0V
Block PAD3101DAB28.
The input terminal of the power module PAD3101DAB28 is connect with the output end of power module IC1 1117-3.3V,
The output end of PAD3101DAB28 is provided with DOVDD output end and AVDD output end.
Wherein, the out-put supply of DOVDD output end is the core voltage of 1.8V, in DOVDD output end and image acquisition circuit
One end connection of the F1 pin, C1 pin and resistance R4 of OV7670 chip, the other end of resistance R4 and the F2 of OV7670 chip
Pin connection.
The out-put supply of AVDD output end is the analog voltage of 2.45V-3.0V, in AVDD output end and image acquisition circuit
The A1 pin of OV7670 chip connects.
As seen in figures 3-6, the master controller is using STM32F103C8T6 chip；In described image Acquisition Circuit
Using OV7670 chip, the radio communication circuit is using USR-LTE-7S4 chip；The Big Dipper positioning circuit is adopted
It is UM220-III N chip.
As shown in Figure 3, Figure 4, the STM32F103C8T6 chip that master controller uses is U3, in image acquisition circuit
OV7670 chip is U5.
The SCL pin of the 42nd the pin SCL and U5 of U3 connects, the SDA pin connection of the 43rd the pin SDA and U5 of U3.
Connect between the interface and master controller that two signal wires of SIOC in OV7670 module and SIOD pass through SCL and SDA
It connects, talks with master controller, carry out image parameter setting, receive the order that master controller is assigned, OV7670 module is made to start work
Make.
The VSYNC pin of the 19th the pin VSYNC and U5 of U3 connects, and the SCLK pin of the 41st the pin SCLK and U5 of U3 connects
It connects, the HREF pin connection of the 37th the pin HREF and U5 of U3, the PCLK pin connection of the 38th the pin PCLK and U5 of U3.
OV7670 module is connect by synchronization signal foot VSYNC pin and HREF pin with master controller, and (VSYNC: frame is same
Walk signal, HREF/HSYNC: line synchronising signal) make can be synchronous with signal between OV7670 module and master controller.Main control
Device reads the state of OV7670 module to the state of judgment module work, so that master control by VSYNC pin and HREF pin
Device processed reads the image data of OV7670 module acquisition in the state of specified.
U3 the 45th, 46,21,22,25-28(D0-D7) the D0-D7 pin of pin and U5 connects.
The output end (by DO-D7) of OV7670 is connect with the end I/O (VD0~VD7) of master controller in image acquisition circuit,
So that image acquisition circuit sends the image data of acquisition to master controller in the state of specified, by master controller to car
The information of image parameter is handled.
As shown in figure 4, the AVDD pin of OV7670 module, DOVDD pin, DVDD pin, VREF1 pin, VREF2 draw
Foot, RESET pin connect respectively first capacitor C9, the second capacitor C10, third capacitor C11, the 4th capacitor C14, the 5th capacitor C15,
The anode of 6th capacitor C16；First capacitor C9, the second capacitor C10, third capacitor C11, the 4th capacitor C14, the 5th capacitor C15,
The cathode of 6th capacitor C16 is grounded.Wherein, be connected with resistance R4 between RESET pin and the anode of capacitor C16, resistance R4 with
The core voltage of 1.8V connects.
Power supply passes through conversion circuit, respectively obtains corresponding core voltage and analog voltage, while increased decoupling capacitor.
The effect of filtering can be played, guarantees the clarity of OV7670 modules acquiring data, and the normal work communicated with master controller
Make, guarantees the integrality of data transmission.
As shown in figs. 3 and 5, the UM220 chip used in Big Dipper positioning circuit is U4, the 12nd pin of master controller U3
It is connect with the 20th pin of U4, the 12nd pin of U3 and the 20th pin of U4 connect.Big Dipper positioning circuit passes through serial ports and master control
The serial ports USART of device processed is connected, and the information of positional parameter is transferred to master controller by serial communication.By master controller to adopting
The information of the vehicle longitude and latitude collected is handled.
As shown in figure 5, the 11st pin of UM220 chip connects the first pin of antenna SIGNAL and one end of inductance L1, electricity
The other end of sense L1 is connect with filter capacitor C3, C4.3rd pin of UM220 chip is connect with one end of resistance R1, resistance R1's
The other end is connect with light emitting diode D1.Big Dipper positioning circuit is used for alignment by union, obtains by connecting with antenna satellite system
Vehicle latitude and longitude information；The inductance L1 connected by antenna provides feed to antenna.The TIMEPULSE pin of UM220 chip is being gone here and there
It is connect after joining the current-limiting resistance of 1K with light emitting diode, when module location information is effective, light emitting diode D1 is with the frequency of 1Hz
Flashing.
As shown in Fig. 3, Fig. 6, the USR-LTE-7S4 chip that radio communication circuit uses for U1, distinguish by the 1-4 pin of U1
Connect with the 14-17 pin of U3, the 10th pin of the 5th pin of U1 and U3 connect, the 6-7 pin of U1 by P1 interface with
The 30-31 pin of U3 connects, and the 19th pin of U1 and the 7th pin of U3 connect；The 20-23 pin and SIM card holder U2 of U1
Connection.
Radio communication circuit is received by USB interface and is passed from master controller by serial ports and master controller serial communication
Defeated image data and Beidou positional parameter, then ground monitoring center is sent data to by 4G communication, and receive from prison
Feedback command is transferred to master controller by the feedback command at control center.
Claims (10)
1. a kind of cold chain vehicle monitor terminal based on Beidou positioning, it is characterised in that: including master controller, and and main control
Image acquisition circuit, Big Dipper positioning circuit and the radio communication circuit of device connection；Image Acquisition is provided in image acquisition circuit
Chip and multiple capacitors；The anode of the multiple capacitor is respectively connect with each pin of image collection chip respectively, and cathode connects
Ground.
2. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 1, it is characterised in that: the figure
As the SCCB bus of Acquisition Circuit and the end the I/O connection of master controller, realizes image parameter setting, complete image acquisition process control
System.
3. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 2, it is characterised in that: it is described
The control terminal of image acquisition circuit includes synchronization signal interface and interface clock signal.
4. a kind of cold chain vehicle monitor terminal based on Beidou positioning described in -3 any items according to claim 1, special
Sign is: described image acquisition chip is using OV7670 module, and there are two operating voltages for OV7670 module, is respectively
Analog voltage between the core voltage and 2.45V-3.0V of 1.8V.
5. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 4, it is characterised in that: it is described more
A capacitor includes first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor；Wherein, the first electricity
The positive AVDD with OV7670 module respectively of appearance, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor
Pin, DOVDD pin, DVDD pin, VREF1 pin, VREF2 pin, the connection of RESET pin；The first capacitor, the second electricity
The cathode ground connection of appearance, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor.
6. a kind of cold chain vehicle monitor terminal based on Beidou positioning described in any one of -3 or 5 according to claim 1, special
Sign is: being provided with and connect with satellite system, for the antenna of alignment by union in the Big Dipper positioning circuit.
7. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 6, it is characterised in that: it is described
It is connected with by antenna and the inductance of a 68nH of feed is provided to antenna.
8. a kind of cold chain vehicle monitor terminal based on Beidou positioning described in any one of -3,5 or 7 according to claim 1,
Be characterized in that: the Big Dipper positioning circuit is using UM220 chip.
9. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 8, it is characterised in that: it is described
Filter capacitor is connected between VCC, VCC_RF and GND pin of UM220 chip.
10. a kind of cold chain vehicle monitor terminal based on Beidou positioning according to claim 9, it is characterised in that: it is described
The TIMEPULSE pin of UM220 chip is connected with light emitting diode after the current-limiting resistance of series connection 1K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200241.9U CN209690515U (en) | 2019-02-15 | 2019-02-15 | A kind of cold chain vehicle monitor terminal based on Beidou positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200241.9U CN209690515U (en) | 2019-02-15 | 2019-02-15 | A kind of cold chain vehicle monitor terminal based on Beidou positioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209690515U true CN209690515U (en) | 2019-11-26 |
Family
ID=68602049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920200241.9U Expired - Fee Related CN209690515U (en) | 2019-02-15 | 2019-02-15 | A kind of cold chain vehicle monitor terminal based on Beidou positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209690515U (en) |
-
2019
- 2019-02-15 CN CN201920200241.9U patent/CN209690515U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 Termination date: 20220215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |