CN206223238U - A kind of cold chain car transports tracking system - Google Patents

Abstract

The utility model discloses a kind of cold chain car transport tracking system, it is characterized in that, including some sensing nodes and the gateway positioned at driver's cabin positioned at cold chain car interior, the data of sensing node collection are sent to gateway, and all data are sent to server by gateway；Sensing node of the present utility model employs bluetooth 4.0 and super low-power consumption the microcontroller series of super low-power consumption, and the service life of sensing node is longer；Sensing node of the present utility model with the addition of optical sensor, and sensing node is arranged in the car door of cold chain car, it is possible to achieve to cold chain car, unpacking activity duration and duration are monitored every time；Gateway of the present utility model has used GPS+GPRS modules, and its superpower receiving ability solves blind area and recovers slow and upload latency issue, and greatly reduces gateway hardware volume, is more convenient for being placed in driver's cabin.

Description

A kind of cold chain car transports tracking system

Technical field

Traced to the source the present invention relates to food security electronics and Internet of Things field, specifically a kind of cold chain car transport tracking system System.

Background technology

The transport of cold chain car is fresh agricultural products from purchase to an indispensable ring in process of consumption, and it is fresh agricultural products Fresh agricultural products very special quality is kept in supply chain to be carried out the environment of Temperature and Humidity Control.Fresh agricultural products cold chain car is entered It is one of guarantee fresh agricultural products very special quality link mostly important safely that row monitoring is followed the trail of.Traditional fresh agricultural products cold chain Car monitoring tracing system is mainly monitoring device is placed in cold chain car, manually records the vehicle environment parameter of each time period The time unloaded with the loading of cold chain car, administrative staff can only be processed abnormal conditions after the transport of cold chain car terminates, it is impossible to Realization carries out real-time processing to unusual condition, can cause larger economic loss；Monitoring for cold chain car remains unchanged in warm and humid In the monitoring stage of degree, to cold chain car, unpacking activity duration and duration are not monitored every time；There is error in GPS, right in itself Each Startup time of cold chain car and each cut-off time cannot precisely monitor.

The short-distance wireless communication technology in Internet of Things quickly grows in recent years, for optimization fresh agricultural products cold chain car is real-time Monitoring, tracing system provides new way.It is widely used as the short-distance wireless communication technology of one of Internet of Things core technology In industrialized agriculture monitoring field and smart machine field, and achieve significant achievement.Chased after in the monitoring of fresh agricultural products cold chain car In track systematic research and application, do not known due to each each transportation range of cold chain car and for the ease of allotment, follow Point out to be dealt into and return again to starting point maximum duration and need some months, and the power supply of the sensing node being located in compartment uses knob Button battery or dry cell, so power supply energy is not very sufficient, so the good biography of low-power consumption, data stability must be designed Sense node.Because the terminal sensing node function in cold chain car compartment is simple, main power consumption is short-range wireless communication module.Closely Popular short-distance wireless communication technology has three kinds over year：1) WiFi full name are Wireless Fidelity, what it was used It is the frequency range near 2.4GHz, the standard for using is by two：IEEE802.11a and IEEE802.11b.The covering of its radio wave Scope is wide, and coverage radius about 100m, transmission speed can reach 11Mbps.Transmission power specified in IEEE802.11 No more than 100mW, WiFi actual emission powers are about 60mW~70mW, and WiFi exchanges bandwidth for power consumption, and it is most of just Take WiFi equipment and be required for normal charge；2) ZigBee is the trade name of IEEE802.15.4, belongs to personal area network (PAN) category is a kind of effective communication distance between several meters to tens meters, transmission power only 1mW, maximum transmission rate Only 250Kb/s, low cost, the two-way wireless communication technology of low complex degree.The time delay of the typical search equipment of ZigBee is 30ms, the time delay of dormancy activation is 15ms, and the time delay of vehicular equipment channel access is 15ms, and takes collision and avoid plan Slightly, the competition and conflict when sending data are avoided, its MAC layer employs fully validated data-transmission mode.One star-like The ZigBee-network of structure can at most accommodate 254 slave units and a main equipment, can at most be deposited simultaneously in a region In 100 independences and the ZigBee-network of the covering that overlaps each other, so ZigBee possesses powerful network saturation and from group Net function.The characteristic of ZigBee is well suited for for automation field, meets radio communication and the control of small inexpensive equipment It is required that.But ZigBee transmission rates are still relatively low, and data transfer is unstable, time delay does not know, and power consumption remains unchanged than larger；3) it is blue Tooth 4.0 adds the transmission of the low-power consumption of high speed transmission technology and Wibree standards in traditional release criteria of bluetooth 3.0+HS Technology, is the bluetooth for collecting conventional Bluetooth, high speed technology and low-power consumption standard " three's unification ".The transmission rate of bluetooth 4.0 is fast, its Transmission rate may be up to 1Mb/s；The version of bluetooth 4.0 uses the CRC (CRC) of 24, which ensure that all envelopes Bag remains to keep maximum stability when being interfered；Bluetooth 4.0 employs simple GFSK Gaussian Frequency Shift Keying (GFSK) modulation, Possess low-down operation power consumption and stand-by power consumption, it only can just start when transmission data are needed, and other times are in stopping Dormancy state, this largely reduces the consume of energy.But, the connectable device of bluetooth 4.0 is fewer, in practical application What can only be stablized is connected to 7 equipment, and bluetooth 4.0 limits its data while the very high security of transmission information is ensured Transmission capacity.

Because the sensing node that need to be laid in the small space compartment scope of fresh agricultural products cold chain car is less and sensing node Need to meet low-power consumption and data stably high rate data transmission, and the data volume of each required transmission of sensing node is few, institute There is obvious advantage using bluetooth 4.0 with fresh agricultural products cold chain car monitoring tracing system.Energy consumption problem and in real time essence Really detection is always the key problem that the transport monitoring of fresh agricultural products cold chain car is followed the trail of, and the present invention is directed to fresh agricultural products cold chain car The characteristics of transport, on the basis of bluetooth 4.0 is introduced, devise a kind of cold chain car transport based on GPS and bluetooth 4.0 and follow the trail of system System, can well solve energy consumption problem and implement accurate monitoring problem, contribute to performance technology of Internet of things to be used in cold chain car The advantage that transport is followed the trail of, promotes cold chain car to transport the large-scale application of tracing system, is that the food security of fresh agricultural products is carried For ensureing.

The content of the invention

Problem to be solved by this invention is to provide one kind.

To achieve the above object, the present invention takes following technical scheme：A kind of cold chain car transports tracking system, and its feature exists In, including some sensing nodes and the gateway positioned at driver's cabin positioned at cold chain car interior, the data of sensing node collection Gateway is sent to, all data are sent to server by gateway.

Further, the sensing node includes sensor assembly I, micro controller module I, short-range wireless communication module I and energy supply module I, sensor assembly I, micro controller module I and short-range wireless communication module I are sequentially connected, sensing Device module I, micro controller module I and short-range wireless communication module I are connected with energy supply module I.

Further, the sensor assembly I includes Temperature Humidity Sensor, optical sensor and regulation circuit I, humiture Sensor and optical sensor connect regulation circuit I respectively, and regulation circuit I is connected with micro controller module I.

Further, the Temperature Humidity Sensor, from SHT1x series, is SHT10, SHT11 or SHT15, operating voltage Scope is 2.4~5.5V；Optical sensor selects BH1750FVI, and operating voltage range is 2.4~3.6V；Regulation circuit I be Increase an electric capacity of 100nF between Temperature Humidity Sensor, power pins VDD, GND of optical sensor respectively, be used to decouple Filtering；Between Temperature Humidity Sensor, the power pins VDD of optical sensor and clock input pin SCK, power pins VDD Increase a pull-up resistor of 4.7K respectively and data-out pin DATA/SDA between.

Further, energy supply module I, using two section dry cell or 3.3V button cells, is sensor assembly I, micro- Controller module I and short-range wireless communication module I provides power supply.

Further, the micro controller module I uses STM8L100xx family chips, and it is a to be operated in 1.65V 8 super low-power consumption microcontrollers in~3.6V voltage ranges, the Series of MCU possess 8KFlash, 2K EEPROM, USART、SPI、I²C, Multifunctional timer etc. meet functional requirement of the invention；Short-range wireless communication module I and microcontroller Device module I is connected, and is driven by micro controller module I, and short-range wireless communication module I is using bluetooth 4.0 and the net in driver's cabin Put the interaction of row data into, the acp chip of bluetooth 4.0 is TI companies using Bluetooth protocol chip stack CC2540, CC2540 chip Production completely compatible bluetooth 4.0 BLE protocol stacks SOC, CC2540 chips possess super low-power consumption sleep pattern and Operational mode, super low-power consumption can be further realized when the mutual inversion of phases of both of which, and this allows CC2540 chips fine Be applied to low-power dissipation system, its operating voltage range is 2.0~3.6V, under sending mode current loss be 19.6mA, treat It is only 0.4uA under machine pattern.

Further, gateway includes short-range wireless communication module II, micro controller module II, sensor assembly II, GPS + GPRS module and energy supply module II, short-range wireless communication module II, sensor assembly II and GPS+GPRS module difference It is connected with micro controller module II, micro controller module II and short-range wireless communication module II is connected with regulation circuit I II, passes Sensor module II and GPS+GPRS module are connected with regulation circuit I V, and regulation circuit I II and regulation circuit I V connects with vehicle power Connect.

Short-range wireless communication module II is connected with micro controller module II, by micro controller module II controls.Short distance As the technical scheme that wireless communication module II is used with short-range wireless communication module I, it is responsible for entering line number with sensing node According to interaction, the short-range wireless communication module II connects short-range wireless communication module I, carries out the interaction of data.

Further, sensor assembly II includes 3-axis acceleration sensor and regulation circuit I I, 3-axis acceleration sensing Device and the I connections of regulation circuit I, regulation circuit are connected with micro controller module II；3-axis acceleration sensor selects MPU6050, It transmits data by I2C agreements with micro controller module II, and MPU6050 operating voltage ranges are 3.3V~5V, possess one Contribute to reduce system power dissipation piece on 1024 byte FIFO, it carry three gyroscopes, each gyroscope be responsible for detection around The speed that each axle is rotated, so we can well monitor the transport condition of cold chain car, adjust circuit I I and namely ensure The peripheral circuit of 3-axis acceleration sensor MPU6050 normal works

Further, micro controller module II uses chip STM32F103RET6, and it is a with Cortex-M3 as core Be operated in 2V~3.6V voltage ranges 32 low-power consumption microcontrollers of the heart.The microcontroller cpu frequency is 72MHz, tool Standby 512K Flash, 64Kb RAM, USART, SPI, I²C, Multifunctional timer etc. meet the function of demand of the present invention.

GPS+GPRS modules are connected with micro controller module II, are driven by micro controller module II.GPS+GPRS modules It is that the MT2503 chips released using MTK newest (to 20160115) are set that acp chip uses KL2303-A, KL2303-A Meter, the operating voltage range of KL2303-A：3.8V~4.2V, representative value is 4.0V, and KL2303-A is the GPS+ Big Dippeves+GSM four Frequency range module, is the GNSS+GPRS wireless locating modules of a stamp hole interface, and KL2303-A supports AGPS auxiliary positionings, branch OTA radio upgrades are held, operation exception can be automatically replied normally, and integrated GPRS backstages standard agreement, it is fast, smart with locating speed Degree is high, reliability is high, repair rate is extremely low, small volume, it is lightweight the advantages of, its superpower GPS and GSM receiving ability solves blind Recover slow and upload latency issue in area.

Further, energy supply module II includes vehicle power, regulation circuit I II and regulation circuit I V, vehicle power It is that micro controller module II and short-range wireless communication module II provide working power through overregulating after circuit I II is adjusted, it is vehicle-mounted Power supply is through overregulating after circuit I V is adjusted for sensor assembly II and GPS+GPRS module provides working power.Regulation circuit I II The acp chip used with regulation circuit I V is all RT8292AHZSP, and it is a efficient DC synchronous electric pressure converter, Input voltage range is 4.5V~23V, and output voltage range is 0.8V~20V, and output current may be up to 2A, In the presence of RT8292AHZSP, vehicle power can be changed into the power supply for supporting modules work.

The beneficial effects of the invention are as follows：

(1) sensing node of the invention employs the bluetooth 4.0 and super low-power consumption microcontroller of super low-power consumption STM8L100xx series, smaller than ZigBee energy consumption, the service life of sensing node is longer；

(2) sensing node of the invention with the addition of optical sensor, and sensing node is arranged in the car door of cold chain car, Can realize that unpacking activity duration and duration are monitored every time to cold chain car；

(3) gateway of the invention has used the GPS+GPRS modules designed with the MT2503 chips of the newest releases of MTK KL2303-A, its superpower GPS and GSM receiving ability solves blind area and recovers slow and upload latency issue, and is substantially reduced Gateway hardware volume, is more convenient for being placed in driver's cabin；

(4) present invention with the addition of 3-axis acceleration sensor on gateway, and the mistake that GPS exists in itself is compensate for well Difference, realizes and each Startup time of cold chain car and each cut-off time is precisely monitored.

Brief description of the drawings

Fig. 1 is that sensing node of the invention connects block diagram；

Fig. 2 is that gateway of the invention connects block diagram；

Specific embodiment

The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention Technical scheme, and can not be limited the scope of the invention with this.

As depicted in figs. 1 and 2, a kind of cold chain car transport tracking system, it is characterised in that including some positioned at cold chain car car Sensing node inside railway carriage or compartment and the gateway positioned at driver's cabin, the data of sensing node collection are sent to gateway, and gateway is by all numbers According to being sent to server；The sensing node includes sensor assembly I 1, micro controller module I 2, short-distance wireless communication mould Block I 3 and energy supply module I 8, sensor assembly I 1, micro controller module I 2 and short-range wireless communication module I 3 according to Secondary connection, sensor assembly I 1, micro controller module I 2 and short-range wireless communication module I 3 with energy supply module I 8 connections；The sensor assembly I 1 includes Temperature Humidity Sensor 4, optical sensor 5 and regulation circuit I 6, temperature and humidity sensing Device 4 and optical sensor 5 connect regulation circuit I 6 respectively, and regulation circuit I 6 is connected with micro controller module I 2；, the temperature Humidity sensor 4, from SHT1x series, is SHT10, SHT11 or SHT15, and operating voltage range is 2.4~5.5V；Illumination is passed Sensor 5 selects BH1750FVI, and operating voltage range is 2.4~3.6V；Regulation circuit I 6 is passed in Temperature Humidity Sensor 4, illumination Increase an electric capacity of 100nF between power pins VDD, GND of sensor 5 respectively, be used to decouple filtering；In Temperature Humidity Sensor 4th, between the power pins VDD and clock input pin SCK of optical sensor 5, power pins VDD and data-out pin Increase a pull-up resistor of 4.7K between DATA/SDA respectively；Energy supply module I8 is using two section dry cell or 3.3V knobs Button battery, is that sensor assembly I 1, micro controller module I 2 and short-range wireless communication module I 3 provide power supply；Sensing section Point with the addition of optical sensor, sensing node is arranged in the car door of cold chain car, it is possible to achieve cold chain car is unpacked every time Activity duration and duration are monitored.

The micro controller module I 2 uses STM8L100xx family chips, and it is a to be operated in 1.65V~3.6V electricity 8 super low-power consumption microcontrollers in the range of pressure, the Series of MCU possess 8K Flash, 2K EEPROM, USART, SPI, I²C, Multifunctional timer etc. meet functional requirement of the invention；Short-range wireless communication module I and micro controller module I connects Connect, driven by micro controller module I, short-range wireless communication module I 3 enters line number using bluetooth 4.0 with the gateway in driver's cabin According to interaction, the acp chip of bluetooth 4.0 is the complete of TI companies production using Bluetooth protocol chip stack CC2540, CC2540 chip The SOC of the BLE protocol stacks of full compatible bluetooth 4.0, CC2540 chips possess the sleep pattern and operational mode of super low-power consumption, Super low-power consumption can be further realized when the mutual inversion of phases of both of which, it is low that this is advantageously applied to CC2540 chips Power consumption system, its operating voltage range is 2.0~3.6V, and current loss is 19.6mA under sending mode, under standby mode only It is 0.4uA.

Gateway includes short-range wireless communication module II 9, micro controller module II 10, sensor assembly II 11, GPS+ GPRS module 12 and energy supply module II 13, short-range wireless communication module II 9, sensor assembly II 11 and GPS+ GPRS module 12 is connected with micro controller module II 10 respectively, micro controller module II 10 and short-range wireless communication module II 9 are connected with regulation circuit I II 16, and sensor assembly II 11 and GPS+GPRS modules 12 are connected with regulation circuit I V 15, adjust Circuit I II 16 and regulation circuit I V 15 are connected with vehicle power 14.

Short-range wireless communication module II 9 is connected with micro controller module II 10, is controlled by micro controller module II 10 System, as the technical scheme that short-range wireless communication module II 9 is used with short-range wireless communication module I 3, using bluetooth 4.0, the acp chip of bluetooth 4.0 uses Bluetooth protocol chip stack CC2540, is responsible for carrying out interacting for data with sensing node.

Sensor assembly II 11 includes 3-axis acceleration sensor 17 and regulation circuit I I 18,3-axis acceleration sensor 16 and regulation circuit I I 18 is connected, and regulation circuit I I 18 is connected with micro controller module II 10；3-axis acceleration sensor 16 From MPU6050, it transmits data by I2C agreements and micro controller module II, MPU6050 operating voltage ranges be 3.3V~ 5V, possesses 1024 byte FIFO on a piece for contributing to reduction system power dissipation, and it carries three gyroscopes, and each gyroscope is born Duty detects the speed rotated around each axle, and so we can well monitor the transport condition of cold chain car, regulation circuit I I 18 peripheral circuits for namely ensureing 3-axis acceleration sensor MPU6050 normal works

Micro controller module II 10 uses chip STM32F103RET6, and it is a work with Cortex-M3 as core Make 32 low-power consumption microcontrollers in 2V~3.6V voltage ranges.The microcontroller cpu frequency is 72MHz, possesses 512K Flash、64Kb RAM、USART、SPI、I²C, Multifunctional timer etc. meet the function of demand of the present invention.

GPS+GPRS modules 12 are connected with micro controller module II 10, are driven by micro controller module II 10.GPS+ It is that the MT2503 chips for using the newest releases of MTK are designed that the acp chip of GPRS module 12 uses KL2303-A, KL2303-A, The operating voltage range of KL2303-A：3.8V~4.2V, representative value is 4.0V, and KL2303-A is the frequency range moulds of the GPS+ Big Dippeves+GSM four Block, is the GNSS+GPRS wireless locating modules of a stamp hole interface, and KL2303-A supports AGPS auxiliary positionings, support OTA without Line upgrade, operation exception can be automatically replied normally, and integrated GPRS backstages standard agreement, with locating speed soon, high precision, can By property it is high, repair rate is extremely low, small volume, it is lightweight the advantages of, its superpower GPS and GSM receiving ability solve blind area recovery Slow and upload latency issue.

Energy supply module II 13 includes vehicle power 14, regulation circuit I II 16 and regulation circuit I V 15, vehicle mounted electric Source 14 is through overregulating after circuit I II 16 is adjusted for micro controller module II 10 and short-range wireless communication module II 9 provides work Make power supply, vehicle power 14 is through overregulating after circuit I V 15 is adjusted for sensor assembly II11 and GPS+GPRS module 12 is provided Working power.The acp chip that regulation circuit I II 16 and regulation circuit I V 15 are used all is RT8292AHZSP, and it is a Efficient DC synchronous electric pressure converter, input voltage range is 4.5V~23V, and output voltage range is 0.8V~20V, defeated Go out electric current up to 2A, in the presence of RT8292AHZSP, vehicle power 14 can be changed into the electricity for supporting modules work Source.

The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, on the premise of the technology of the present invention principle is not departed from, some improvement and deformation can also be made, these improve and deform Also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of cold chain car transports tracking system, it is characterised in that including some sensing nodes positioned at cold chain car interior With the gateway positioned at driver's cabin, sensing node collection data be sent to gateway, all data are sent to server by gateway, institute State sensing node and include sensor assembly I, micro controller module I, short-range wireless communication module I and energy supply module I, pass Sensor module I, micro controller module I and short-range wireless communication module I are sequentially connected, sensor assembly I, micro controller module I and short-range wireless communication module I are connected with energy supply module I, and short-range wireless communication module I connection gateways enter line number According to interaction.

2. a kind of cold chain car transports tracking system according to claim 1, it is characterised in that the sensor assembly I is included Temperature Humidity Sensor, optical sensor and regulation circuit I, Temperature Humidity Sensor and optical sensor connect regulation circuit I respectively, Regulation circuit I is connected with micro controller module I.

3. a kind of cold chain car transports tracking system according to claim 2, it is characterised in that the Temperature Humidity Sensor is selected SHT1x series, operating voltage range is 2.4 ~ 5.5V；Optical sensor selects BH1750FVI, and operating voltage range is 2.4 ~ 3.6V。

4. a kind of cold chain car transports tracking system according to claim 2, it is characterised in that the regulation circuit I is in temperature Increase an electric capacity of 100nF between humidity sensor, power pins VDD, GND of optical sensor respectively, be used to decouple filter Ripple；Between Temperature Humidity Sensor, the power pins VDD of optical sensor and clock input pin SCK, power pins VDD and Increase a pull-up resistor of 4.7K between data-out pin DATA/SDA respectively.

5. a kind of cold chain car transports tracking system according to claim 2, it is characterised in that energy supply module I uses two Section dry cell or 3.3V button cells, for sensor assembly I, micro controller module I and short-range wireless communication module I are provided Power supply.

6. a kind of cold chain car transports tracking system according to claim 2, it is characterised in that the micro controller module I is adopted Use STM8L100xx family chips, short-range wireless communication module I carries out data using bluetooth 4.0 with the gateway in driver's cabin Interaction, the acp chip of bluetooth 4.0 uses Bluetooth protocol chip stack CC2540.

7. a kind of cold chain car transports tracking system according to claim 1, it is characterised in that gateway is logical comprising short-distance wireless Letter module ii, micro controller module II, sensor assembly II, GPS+GPRS module and energy supply module II, short-distance wireless Communication module II, sensor assembly II and GPS+GPRS module are connected with micro controller module II respectively, micro controller module II With short-range wireless communication module II with regulation circuit I II be connected, sensor assembly II and GPS+GPRS module with adjust circuit IV is connected, and regulation circuit I II and regulation circuit I V are connected with vehicle power.

8. a kind of cold chain car transports tracking system according to claim 7, it is characterised in that sensor assembly II includes three axles Acceleration transducer and regulation circuit I I, 3-axis acceleration sensor and the I connections of regulation circuit I, adjust circuit and microcontroller Module ii is connected.

9. a kind of cold chain car transports tracking system according to claim 8, it is characterised in that micro controller module II uses core Piece STM32F103RET6,3-axis acceleration sensor selects the acp chip of MPU6050, GPS+GPRS modules to use KL2303- A。

10. a kind of cold chain car transports tracking system according to claim 1, it is characterised in that energy supply module II is included Vehicle power, regulation circuit I II and regulation circuit I V, vehicle power are micro controller module through overregulating after circuit I II is adjusted II and short-range wireless communication module II provides working power, and vehicle power is sensor assembly through overregulating after circuit I V is adjusted II and GPS+GPRS modules provide working power, and the acp chip that regulation circuit I II and regulation circuit I V are used all is RT8292AHZSP。