CN100357708C

CN100357708C - Logistics black box

Info

Publication number: CN100357708C
Application number: CNB2005100304402A
Authority: CN
Inventors: 苏树强; 李云飞
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2005-10-13
Filing date: 2005-10-13
Publication date: 2007-12-26
Anticipated expiration: 2025-10-13
Also published as: CN1749701A

Abstract

The present invention relates to a logistic black box which belongs to the technical field of logistic information. The present invention comprises a temperature and humidity chip, an acceleration chip, a level converting chip, a CPU chip, three data storage chips, a power source circuit and a standard serial port, wherein the temperature and humidity chip and the three data storage chips are connected in parallel to a universal digital I/O interface of the CPU chip by an industrial standard I2C interface; the signal output terminal of the acceleration chip is connected with a shared digital I/O interface of the CPU chip; the input terminal of the level converting chip is connected with the shared digital I/O interface of the CPU chip, and the output terminal of the level converting chip is connected with a standard serial port; the voltage input terminals of the seven chips are all connected to a voltage output terminal of 3.6V in the power source circuit, and ground wires of the seven chips are all connected to a ground wire of the power source circuit. The present invention automatically records the vibration and the temperature and humidity states of goods in the logistic process, helps goods owners to effectively monitor irregular logistic behaviors in the logistic process and is used as important evidence for the settlement of claims.

Description

Logistics black box

Technical field

What the present invention relates to is a kind of device of technical field of information processing, specifically, is a kind of logistics black box.

Background technology

How to avoid or reduce rash-and-rough way of loading and unloading and in transit loss become an important issue of logistics, can write down a kind of needs that the logistics black box of the residing humiture environment of goods and vibration state in the logistics progress has become standard logistics market automatically.Logistics black box is mainly used in vibration and the residing humiture state of record goods in logistics system, and logistics black box mainly should be attached on the cargo compartment, so the volume of logistics black box should be as far as possible little; Because of the cycle of logistics may be longer, logistics black box must write down again in the whole logistics progress the data that should write down, the storage space of the registering instrument that works alone all is limited, and vibration data is at random, vibration signals collecting needs high-speed sampling again, this just requires the storer of logistics black box big as much as possible, and the storage data will be simplified as far as possible; Logistics black box does not have external power source, can only lean on self-contained battery, and low-power consumption is necessary; In addition, cost is low as much as possible.In summary, logistics black box want that volume is little, low-power consumption, storage data compaction, low cost.

Find by prior art documents, Chen Jinhua is published in 2003 the 19th the 2nd phases of volume on the microcomputer information magazine " based on the Portable Vibration of Msp430F148 " and has introduced vibration measurement instrument, this device is not considered the signal of humiture and vibration signal are monitored simultaneously, to be used for the logistics monitoring field.Up to the present, all the temperature-humidity signal of the vibration signal of transition and gradual change is not unified in the report of method in the registering instrument in the open source literature of this area, the report that temperature, humidity, the vibration record instrument apparatus of more not little about volume, low-power consumption and data compaction occurs.That is to say the monitoring that also can be applicable to logistics field up till now without any a black box.Volume is little, the research and development of the logistics black box of low power consumption, data compaction have become the necessary of logistics development.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, a kind of logistics black box is provided, make its automatically vibration of record goods and temperature of living in, moisture condition in logistics progress, help the goods master effectively to supervise irregularity Flow Behavior in the logistics progress, and as the important evidence of Claims Resolution.

The present invention is achieved by the following technical solutions, the present invention includes: the humiture chip, the acceleration chip, level transferring chip, cpu chip, three data memory chips, power circuit and standard serial mouth, humiture chip and three data memory chips are parallel to the general digital I/O interface of cpu chip with the I2C interface of industrial standard, acceleration chip signal output terminal links to each other with the common numbers I/O interface of cpu chip, the input of level transferring chip links to each other with cpu chip common numbers I/O interface, the output of level transferring chip links to each other with the standard serial mouth, the voltage input of described seven chips all is connected to the 3.6V voltage output in the power circuit, and the ground wire of described seven chips all is connected to the power circuit ground wire; Described humiture chip is integrated Temperature Humidity Sensor, signal amplification conditioning, A/D conversion, I2C bus interface change digital signal to temperature-humidity signal; Described acceleration chip is integrated vibration transducer and signal amplifying and conditioning circuit changes vibration signal into voltage signal; Described level transferring chip has realized the conversion of 3.6V voltage and 9V voltage, solves host computer serial port voltage and the inconsistent problem of CPU voltage, thereby solves serial data communication interface circuit problem; Described three data memory chips are used for the storage of data; Described standard serial mouth is used for docking with the standard serial mouth of host computer; Described power circuit changes the supply voltage of 9V into stable 5V voltage and 3.6V voltage, and the voltage of 3.6V is given seven chip power supplies, and 5V is for waiting until expansion voltage in advance.

Described cpu chip comprises: the CPU module, serial communication USART module, the A/D module, comparator C A module, the D/A module, timer T module, data register DR module, acceleration chip signal output terminal links to each other with the common numbers I/O interface of A/D module, the input of level transferring chip links to each other with the common numbers I/O interface of serial ports communication USART module, the common numbers I/O interface of D/A module links to each other with comparator C A module common numbers I/O interface, the common numbers I/O interface of A/D module links to each other serial communication USART module with comparator C A module common numbers I/O interface, the A/D module, comparator C A module, the D/A module, timer T module, data register DR module all is connected in parallel by data bus with the CPU module.

Described CPU module is a data processing centre (DPC), accepts the interrupt request of comparator C A module, timer T module, serial communication USART module, carries out arithmetic logical operation, and input and output are digital signal.Described A/D module further is converted into digital signal to the voltage signal of acceleration chip output.Described D/A module is to be digital signal transition voltage signal, as the reference voltage of comparator C A module.When described comparator C A module surpasses reference voltage at acceleration chip output voltage, produce interrupt request, the CPU module begins to receive the digital signal of A/D module output, promptly begins to gather vibration signal.Described data register DR module is deposited the maximum vibration signal value of the collection in a period of time.Described timer T module when arrive in the interval time of setting, produces and interrupts, and makes the CPU module begin to receive humiture chip outputting standard I2C digital signal and the data register DR module value of depositing, and it is write entry data memory.Described serial ports communication USART module is after receiving host computer and handling the back data transfer command by level transferring chip, produce and interrupt, make CPU module reading of data memory data, and be sent to host computer, or make the CPU module receive the host computer data, to set the output voltage and the timer T module time interval of D/A module.

During system initialization, host computer sends setting signal to level transferring chip by the standard serial mouth, and cpu chip receives the setting signal that host computer sends by level transferring chip; In system's operational process, chip temperature is transformed to digital signal to temperature-humidity signal, send into cpu chip by the I2C mode, the acceleration chip is transformed to voltage signal to vibration signal, enter the I/O mouth of cpu chip, cpu chip becomes digital signal with it again, and cpu chip is sent into three data storage chips with the temperature, humidity and the vibration digital signal that receive in the I2C mode; After recording process is finished, in the time of need deriving data, host computer sends the export (swf) command signal to level transferring chip by the standard serial mouth, cpu chip receives the export (swf) command signal that host computer sends by level transferring chip, cpu chip reads three data in the data memory chip, and being sent to level transferring chip, level transferring chip is sent to host computer with it by the standard serial mouth.

Among the present invention, data stream is three paths: (1) host computer transmits D/A module output voltage data by standard serial mouth, level transferring chip to serial ports USART module, produce interrupt request, the CPU module receives the host computer data, and data setting is the input of D/A module, the D/A module into the output voltage of changing, and links to each other with comparator C A module interface because the D/A module is exported, so comparator C A module reference voltage V CA0 produces; The acceleration chip changes vibration signal into voltage signal, this voltage signal inserts another input port of comparator C A module, become comparative voltage VCA1, when VCA1＞V CA0, be described this moment, vibration signal has surpassed setting value, should the activated device, comparator C A module produces interrupt request, and the starting of A/D module becomes digital signal with vibration signal, the CPU module is waken up, receive this digital signal, and deposit the maximum vibration signal of this section in the time in data register tool DR module, when VCA1≤V CA0, illustrate that this moment, vibration signal did not surpass setting value, vibration does not have the scope of overshoot, and the dormancy of CPU module enters energy-saving mode.(2) host computer is by the standard serial mouth, level transferring chip transmits timer T module time interval data to serial ports USART module, produce interrupt request, the CPU module receives the host computer data, and be the timer time spacing value with data setting, when reach interval time, timer T module produces interrupt request, the CPU module is waken up, start the I2C data transmission, the CPU module receives the humiture chip data, and these two data are write entry data memory together with data in the data register DR module, the dormancy of CPU module is not in energy-saving mode when the time interval reaches.(3) host computer transmits the read output signal data by standard serial mouth, level transferring chip to serial ports USART module, produce interrupt request, the CPU module receives the host computer data, starts the I2C data transmission, data in the CPU module reading of data storer, and data are sent to host computer.

The present invention is unified in the temperature-humidity signal of the vibration signal of transition and gradual change in the registering instrument, and has accomplished that low-power consumption, data compaction, volume are little, has greatly made things convenient for the monitoring of irregular behavior in the logistics.Temperature and humidity belongs to the gradual change signal, these two signals can be interrupted sampling by timer control, yet vibration signal belongs to transient signal, signal sampling can not be controlled by timer, need high-speed sampling, vibration signals is controlled by comparator module, when vibration voltage surpasses comparison reference voltage, the CPU module enters the comparer interruption status, and high-speed sampling begins.Because fundamental purpose of the present invention is the irregular shape in the monitoring logistics, low vibration belongs to normal behaviour, needn't record, only under the high vibration situation, in other words be exactly that vibration signal surpasses setting signal, just sample this sample mode that carries out vibration signal by the comparer interrupt mode, saved the spending of CPU power consumption greatly, CPU is in the idle sleep state in the most of the time.These two gradual change signals of temperature and humidity are interrupted sampling by timer control, can whenever adopt one group of data, store one group of data, this transient signal of high vibration requires the speed of data acquisition to want fast, so the data of gathering are also more, but the data that need to store needn't be too many, only need one of storage just passable at locality moment maximum vibration signal, though the present invention has carried out high-speed sampling under the comparer interrupt mode, but only keep the timer time vibration signal of interior maximum at interval, this maximum vibration signal deposits storer in temperature-humidity signal under the timer interrupt mode, this data processing method has been saved memory data output greatly, accomplished to be data compaction, write down irregular behavior in the logistics again really.Since the more employing of native system integrated chip, circuit connects fairly simple, volume can accomplish that working current is less than 2mA as size as the matchbox, standby current is less than 0.5mA.

Description of drawings

Fig. 1 is a structured flowchart of the present invention.

Fig. 2 is the structured flowchart of cpu chip.

Fig. 3 is the electric supply system circuit diagram.

Fig. 4 is the physical circuit connection layout of cpu chip, standard serial mouth and level transferring chip.

Fig. 5 is the physical circuit connection layout of cpu chip, humiture chip and pin-saving chip.

Fig. 6 is the physical circuit connection layout of cpu chip, acceleration chip.

Fig. 7 is a DL graph of the present invention.

Fig. 8 is the vibration experiment figure as a result that uses the present invention's record.

Embodiment

As shown in Figure 1, 2, the present invention includes: humiture chip 1, acceleration chip 2, level transferring chip 3, cpu chip 4, three data memory chips 5, power circuit 6 and standard serial mouths 7, its connected mode is: humiture chip 1 and three data memory chips 5 are parallel to the general digital I/O interface of cpu chip 4 with the I2C interface of industrial standard, and acceleration chip 2 signal output parts link to each other with the common numbers I/O interface of cpu chip 4; The input of level transferring chip 3 links to each other with cpu chip 4 common numbers I/O interfaces, the output of level transferring chip 3 links to each other with standard serial mouth 7, the voltage input of described chip all is connected to the 3.6V voltage output in the power circuit 6, and the ground wire of described chip all is connected to power circuit 6 ground wires; Described humiture chip 1 is integrated, and Temperature Humidity Sensor, signal amplify conditioning, A/D conversion, I2C bus interface, and the humiture chip functions be temperature-humidity signal transformation digital signal; Described acceleration chip 2 is integrated vibration transducer and signal amplifying and conditioning circuit changes vibration signal into voltage signal; Described level transferring chip 3 has realized the conversion of 3.6V voltage and 9V voltage, solves host computer serial port voltage and the inconsistent problem of CPU voltage, thereby solves serial data communication interface circuit problem; Described three data memory chips 5 are used for the storage of data; Described standard serial mouth 7 is used for docking with the standard serial mouth of host computer; Described power circuit 6 changes the supply voltage of 9V into stable 5V voltage and 3.6V voltage, and the voltage of 3.6V is given described seven chip power supplies, and 5V is for waiting until expansion voltage in advance.

Described cpu chip 4 comprises: CPU module 8, serial communication USART module 9, A/D module 10, comparator C A module 11, D/A module 12, timer T module 13, data register DR module 14, acceleration chip 2 signal output parts link to each other with the common numbers I/O interface of A/D module 10, the input of level transferring chip 3 links to each other with the common numbers I/O interface of serial ports communication USART module 9, the common numbers I/O interface of D/A module 12 links to each other with comparator C A module 11 common numbers I/O interfaces, the common numbers I/O interface of A/D module 10 links to each other serial communication USART module 9 with comparator C A module 11 common numbers I/O interfaces, A/D module 10, comparator C A module 11, D/A module 12, timer T module 13, data register DR module 14 is all passed through the related connection of data bus with CPU module 8.

Described CPU module 8 is data processing centre (DPC)s, accepts comparator C A module 11, timer T module 13, serial ports communication USART module 9 interrupt request, carries out arithmetic logical operation, and input and output are digital signal.Described A/D module 10 further is converted into digital signal to the voltage signal of acceleration chip 2 outputs.Described D/A module 12 is to be digital signal transition voltage signal, as the reference voltage of comparator C A module 11.When described comparator C A module 11 surpasses reference voltage at acceleration chip 2 output voltages, produce interrupt request, CPU module 8 begins to receive the digital signal of A/D module 10 outputs, promptly begins to gather vibration signal.Described data register DR module 14 is deposited the maximum vibration signal value of the collection in a period of time.Described timer T module 13 when arrive in the interval time of setting, produces and interrupts, and makes CPU module 8 begin to receive humiture chip 1 outputting standard I2C digital signal and data register DR module 14 values of depositing, and it is write entry data memory 5.Described serial ports communication USART module 9 is after receiving host computer and handling the back data transfer commands by level transferring chip 3, produce and interrupt, make CPU module 8 reading of data memory datas 5, and be sent to host computer, or make the CPU module receive the host computer data, to set the output voltage and 13 time intervals of timer T module of D/A module 12.

Described cpu chip 4 is central processing units, adopt the MSP430F157 chip, the concrete parameter of this chip is: 16 reduced instruction structures (RISC), the 125ns instruction cycle, 32KB+256B flash storer, 1KB RAM, a house dog, described A/D module 10 are 12 A/D of 8 passages, and described D/A module 12 is two 12 D/A, 48 I/O mouths, 16 WDT, described timer T module 13 is 1 16 Timer_A, 1 16 Timer_B (catching/comparand register for 3), described serial communication USART module 9 is serial communication USART0 and USART1, and described comparator C A module 11 is comparers in the sheet.This chip operating voltage is 1.8～3.6V, has super low-power consumption, and under the 2.2V operating voltage, activity pattern is 280 μ A, and standby mode is 1.6 μ A, and power-down mode (maintenance of RAM data) is 0.1 μ A, and 5 kinds of energy-saving modes are arranged, from standby to waking up less than 6 μ s.The leakage current maximum of I/O input port is less than 50nA.This chip is supported more than ten interrupt source, and can be nested arbitrarily, by reasonable programming, can reduce power consumption, can make quick response to outside event request again.The various hardware that this chip is integrated have reduced device volume, have improved system stability, but this chip on-line debugging has been saved exploitation and upgrade cost.Choosing of this chip is the basis of success of the present invention.

Described humiture chip 1 adopts SHT11, and this chip all is integrated in a chip with Temperature Humidity Sensor, signal amplification conditioning, A/D conversion, I2C bus interface, can provide the output of accurate relative humidity of whole school and temperature value, the humidity value output resolution ratio is 14, the temperature value output resolution ratio is 12, and is programmed for 12 and 8, small size, but surface mount, the supply voltage scope is 2.4～5.5V, and current drain is 550 μ A during measurement, average out to 28 μ A are 3 μ A during dormancy.Humiture chip 1 carries out the I2C data transmission with cpu chip 4.

Described acceleration chip 2 adopts ADXL320J, a kind of twin-axis accelerometer of this chip, have high precision, high stability, low cost, low-power consumption, measurement range is ± 5g, linear precision 0.2%, zero point drift is ± 25mg, distinguishable signal less than 1mg, and zero temperature stability is 0.1mg/ ℃.The supply voltage scope is 2.4～5.25V, and current drain is 350 μ A during measurement.The output of acceleration chip 2 inserts the A/D module 10 of cpu chip 4.

Described memory chip 5 adopts three 24LC128, and data are by I2C mode and cpu chip 4 transmission.

Described level transferring chip 3 adopts MAX3221, realizes that by this chip the serial communication USART0 module 9 of cpu chip 4 is docked with standard serial mouth 7.

As shown in Figure 3, the power supply power supply is by dual mode, one is the 9V powered battery, one is the power supply of AC-DC Switching Power Supply, IC1 is that low power consumption voltage is adjusted chip LM317, and it can be stable at 5V with 9V voltage by the configuration of resistance R 1 and R2, IC2 is that another sheet low power consumption voltage is adjusted chip RH5RL36AA, 5V voltage can be stable at 3.6V.Choosing of 9V power supply is in order to guarantee enough electric weight, and the voltage of 3.6V is given CPU, SHT11, ADXL320J, 24LC128, MAX3221 chip power supply, and 5V is for waiting until expansion voltage in advance.

As shown in Figure 4, P3.4 and P3.5 that standard serial mouth 7 is adjusted chip 3 and cpu chip 4 by level join, P3.4 is the UTXD0 interface of the serial communication module USART0 of cpu chip 4, P3.5 is the URXD0 interface of the serial communication module USART0 of cpu chip 4, and level is adjusted chip 3 and mainly 3.6V voltage and 9V voltage exchanged.

As shown in Figure 5, temperature and humidity sensing chip 1 and pin-saving chip 5 transmit data with cpu chip 4 by the I2C mode.The control level of temperature and humidity sensing chip 1 is drawn the I/O mouth P1.0 that angle SCL is connected to cpu chip 4, and data level is drawn the I/O mouth P1.1 that angle SDA is connected to cpu chip 4.The control level of three data storage chips 5 is drawn I/O mouth P4.0, P4.2, the P4.4 that angle SCL is connected to cpu chip 4 respectively, and data level is drawn I/O mouth P4.1, P4.3, the P4.5 that angle SDA is connected to cpu chip 4 respectively.XTAL is a standard 32768Hz crystal oscillator.

As shown in Figure 6, the output terminal of acceleration chip 2 is connected to the I/O mouth P6.0 and the P2.4 of cpu chip 4 simultaneously, and the I/O mouth P6.6 of cpu chip 4 is connected with P2.3.P6.0 is 0 a passage input end of the A/D module 10 of cpu chip 4, P6.6 is 0 channel output end of D/A module 12 in the cpu chip 4, P2.3 is the input end CA0 of comparer CA module 11 in the cpu chip 4, and P2.4 is the input end CA1 of comparer CA1 module 11 in the cpu chip 4.

As shown in Figure 7, system data flow is three paths: (1) host computer transmits D/A module 12 output voltage data by standard serial mouth 7, level transferring chip 3 to serial ports USART module 9, serial ports USART module 9 produces interrupt request, CPU module 8 receives the host computer data, and be D/A module 12 input with data setting, D/A module 12 into the output voltage of changing, because 12 outputs of D/A module link to each other with comparer CA module 11 interfaces in the CPU sheet, so comparator C A module 11 reference voltage V CA0 produce; Acceleration chip 2 changes vibration signal into voltage signal, this voltage signal inserts comparator C A module 11 another input ports, become comparative voltage VCA1, when VCA1＞VCA0, be described this moment, vibration signal has surpassed setting value, should the activated device, comparator C A module 11 produces interrupt request, CPU module 8 is waken up, and 10 startings of A/D module become digital signal with vibration signal, CPU module 8 receives this digital signal, and deposits the maximum vibration signal of this section in the time in CPU sheet data register tool DR module 14.(2) host computer transmits timer T module 13 time interval datas by standard serial mouth 7, level transferring chip 3 to serial ports USART module 9, produce interrupt request, CPU module 8 receives the host computer data, and be timer 13 time interval values with data setting, when reach interval time, timer T module 13 produces interrupt request, CPU module 8 is waken up, start the I2C data transmission, CPU module 8 receives humiture chip 1 data, and these two data are write entry data memory 5 together with data in the data register DR module 14.(3) host computer transmits the read output signal data by standard serial mouth 7, level transferring chip 3 to serial ports USART module 9, serial ports USART module 9 produces interrupt request, CPU module 8 receives the host computer data, start the I2C data transmission, data in the CPU module 8 reading of data storeies 5, and data are sent to host computer.

As shown in Figure 8, the experiment condition of data is, vibration acceleration surpasses 1g/s2 and (sets relatively reference acceleration, promptly set the reference voltage of comparer device) time vibrating data collection begin, 1 minute data recording time interval, record is 80 minutes T.T., in 80 minutes, rocks registering instrument at random or carries out registering instrument and fall.From experimental result as can be seen, apparatus of the present invention can effectively write down the high vibration problem in the logistics, and data structure is simplified.

Claims

1. logistics black box, comprise: humiture chip (1), acceleration chip (2), level transferring chip (3), cpu chip (4), three data memory chips (5), power circuit (6) and standard serial mouth (7), it is characterized in that, cpu chip (4) is the MSP430F157 chip, and humiture chip (1) and three data memory chips (5) are with the I of industrial standard ²C interface is parallel to the general digital I/O interface of cpu chip (4), acceleration chip (2) signal output part links to each other with the common numbers I/O interface of cpu chip (4), the input of level transferring chip (3) links to each other with cpu chip (4) common numbers I/O interface, the output of level transferring chip (3) links to each other with standard serial mouth (7), the voltage input of described seven chips (1,2,3,4,5) all is connected to the 3.6V voltage output in the power circuit (6), and the ground wire of described seven chips (1,2,3,4,5) all is connected to power circuit (6) ground wire; Described humiture chip (1) is integrated Temperature Humidity Sensor, signal amplify conditioning, A/D conversion, I ²The C bus interface changes digital signal to temperature-humidity signal; Described acceleration chip (2) is integrated vibration transducer and signal amplifying and conditioning circuit changes vibration signal into voltage signal; Described level transferring chip (3) realizes the conversion of 3.6V voltage and 9V voltage, solves host computer serial port voltage and the inconsistent problem of CPU voltage, thereby solves serial data communication interface circuit problem; Described three data memory chips (5) are used for the storage of data; Described standard serial mouth (7) is used for docking with the standard serial mouth (7) of host computer; Described power circuit (6) changes the supply voltage of 9V into stable 5V voltage and 3.6V voltage, and the voltage of 3.6V is given seven chips (1,2,3,4,5) power supply, and 5V is for waiting until expansion voltage in advance.

2. logistics black box according to claim 1, it is characterized in that, described cpu chip (4) comprising: CPU module (8), serial communication USART module (9), A/D module (10), comparator C A module (11), D/A module (12), timer T module (13), data register DR module (14), acceleration chip (2) signal output part links to each other with the common numbers I/O interface of A/D module (10), the input of level transferring chip (3) links to each other with the common numbers I/O interface of serial ports communication USART module, the common numbers I/O interface of D/A module (12) links to each other with comparator C A module (11) common numbers I/O interface, the common numbers I/O interface of A/D module (10) links to each other serial communication USART module (9) with comparator C A module (11) common numbers I/O interface, A/D module (10), comparator C A module (11), D/A module (12), timer T module (13), data register DR module (14) all is connected in parallel by data bus with CPU module (8).

3. logistics black box according to claim 2, it is characterized in that, described CPU module (8) is a data processing centre (DPC), accept the interrupt request of comparator C A module (11), timer T module (13), serial communication USART module (9), carry out arithmetic logical operation, input and output are digital signal.

4. logistics black box according to claim 2 is characterized in that, described A/D module (10) further is converted into digital signal to the voltage signal of acceleration chip (2) output.

5. logistics black box according to claim 2 is characterized in that, described D/A module (12) is that the digital signal transition that host computer is transmitted is a voltage signal, as the reference voltage of comparator C A module (11).

6. logistics black box according to claim 5, it is characterized in that, when described comparator C A module (11) surpasses reference voltage at acceleration chip (2) output voltage, produce interrupt request, CPU module (8) begins to receive the digital signal of A/D module (10) output, promptly begins to gather vibration signal.

7. logistics black box according to claim 2 is characterized in that, described data register DR module (14) is deposited the maximum vibration signal value of the collection in a period of time.

8. logistics black box according to claim 7, it is characterized in that, described timer T module (13), when arrive in the interval time of setting, produce and interrupt, make CPU module (8) begin to receive humiture chip (1) outputting standard I2C digital signal and data register DR module (14) value of depositing, and it is write entry data memory.

9. logistics black box according to claim 2, it is characterized in that, described serial communication USART module (9), after receiving host computer and handling the back data transfer command by level transferring chip (3), produce and interrupt, make CPU module (8) reading of data memory data, and be sent to host computer, or make CPU module (8) receive the host computer data, to set the output voltage and timer T module (13) time interval of D/A module (12).