JP2002046815A - On-vehicle terminal equipment for operation and temperature control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide on-vehicle terminal equipment for operation and temperature control capable of confirming in real time the operating status of a transportation vehicle on a control server side and confirming cargo temperature information in correspondence with position information. SOLUTION: This on-vehicle terminal equipment 2 comprises a GPS receiving antenna 13, a public radio antenna 14, and temperature recorder connectors 25 and 26. The on-vehicle terminal equipment 20 is loaded on the transportation vehicle and, during the transportation, the position information received by the GPS receiving antenna 13 is transmitted from the public radio antenna 14 to the control server at specified time intervals. After the transportation is completed, a temperature recorder set near the cargo is set to the temperature recorder connectors 25 and 26 read temperature history data, and the read data is transmitted from the public radio antenna 14 to the control server. In the control server, based on the position information, the operating status during the transportation is displayed in real time and, after the transportation is completed, the position information and temperature history data are displayed in the linked state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truck or other cargo transporting vehicle for transporting goods requiring temperature control, such as frozen or refrigerated food, to be loaded on a cargo transporting vehicle. The present invention relates to an in-vehicle terminal device for operation and temperature management that transmits information and temperature history data of cargo to a management center.

[0002]

2. Description of the Related Art With the recent development of distribution systems, the transportation of frozen and refrigerated foods has also become active. When transporting frozen and chilled food along with other regular cargo by truck,
The low-temperature refrigerators for freezing and refrigeration are loaded on trucks, and frozen foods and refrigerated foods are respectively put in them and transported to the destination. The low-temperature storage has a regenerator inside, and cools the regenerator before loading on a truck. During transportation, the low-temperature storage cools the inside of the low-temperature storage by cold heat accumulated in the regenerator. At this time, switching between freezing and refrigeration is performed by controlling the operation of a cooling fan provided inside.

On the other hand, in recent years, there has been an increasing need to control the temperature of frozen and chilled food during transportation in the flow of strengthening the hygiene management of food. Therefore, when transporting frozen and chilled foods using a low-temperature refrigerator, place a portable temperature recording device near the food, read the data from the temperature recording device with a personal computer etc. after arriving at the destination, A temperature management system has been developed which allows the user to check the temperature history of food during transportation. If such a system is adopted, it is possible to confirm whether or not the temperature in the low-temperature storage has been kept normal during transportation, and if an abnormality has occurred, the time and duration of the occurrence.

[0004]

However, in the above-mentioned conventional temperature management system, the temperature history of the transported cargo cannot be confirmed by associating it with the position information. There is a problem that it is difficult to analyze the data.

An object of the present invention is to solve such a problem and to make it possible to confirm the temperature history of a transported cargo in association with position information when transporting frozen or refrigerated foods. It is.

[0006]

In order to solve the above-mentioned problems, an on-vehicle terminal device for operation and temperature management according to claim 1 is loaded on a moving body for freight transportation and freight transported to a management server. An operation / temperature management in-vehicle terminal device for transmitting position information during transmission and transmitting temperature history data of the transported cargo after the completion of transportation, comprising: a GPS receiving antenna;
The S receiving circuit, the public wireless antenna, the public wireless communication circuit, and a temperature recording device which is installed at the same temperature condition as the transported cargo and stores the temperature detected at predetermined time intervals in the memory as temperature history data are connected. And transmitting position information received by the GPS receiving antenna and the GPS receiving circuit to the management server at predetermined time intervals by the public wireless communication circuit and the public wireless antenna. Means for reading temperature history data from a temperature recording device connected to the temperature recording device connector, and transmitting the data to the management server via the public wireless circuit and a public wireless antenna. . In this way, by loading the on-board terminal device for operation and temperature management on a moving object for cargo transportation, the operation state can be checked in real time on the management server side, and the frozen and chilled foods can be transported. In this case, the temperature history of the transported cargo can be easily confirmed in association with the position information.

[0007] The operation and temperature control in-vehicle terminal device according to the second aspect holds a unique terminal number therein, and transmits the position information and the temperature history data with the terminal number attached. It is characterized by doing. With this configuration, when the management server receives the position information and the temperature history data, it is possible to easily determine which in-vehicle terminal device has sent the information.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram of an operation / temperature management system using the operation / temperature management in-vehicle terminal device of the present invention. In FIG. 1, reference numerals 1 and 2 denote trucks for transporting frozen and chilled foods, 3 a GPS satellite, and 5 and 6 a
For example, a base station of a public wireless communication network 4 such as the DoPa network of NTT DoCoMo, a router 7, and a management server 8 that collectively manages various information of a transport company to which the trucks 1 and 2 belong.

As shown in FIG. 2, the trucks 1 and 2 carry a low-temperature refrigerator 9 and a low-temperature refrigerator 10 in a cargo compartment together with general cargo, and include refrigerated food and frozen food therein. Food is stored. Further, in each of the low-temperature storages 9 and 10, a temperature recording device 1 for storing the temperature detected by the temperature detecting means at predetermined time intervals in a memory.
1,12 are placed. In the cabs of the trucks 1 and 2, an in-vehicle terminal device having GPS information receiving means, public wireless communication means, and temperature data reading means for reading temperature data from a temperature recording device is loaded. A GPS antenna 13 and a wireless antenna 14 connected to the camera are provided near the window.

FIG. 3 is an external view of the vehicle-mounted terminal device. In FIG. 3, reference numerals 13 and 14 correspond to those in FIG. 2, 20 is an in-vehicle terminal device, 21 is a power connector used by being inserted into a cigar lighter insertion portion of a truck cab, 2.
Reference numerals 2 and 23 denote antenna codes, and reference numeral 24 denotes a suction cup for fixing the wireless antenna 14 to a window glass of a truck. Further, 25 and 26 are temperature recording device connectors for connecting the temperature recording device, 27 is reset temperature recording device,
A power button 28 for starting the temperature measurement operation is a transmission button for starting transmission of the temperature data stored in the temperature recording device.

Reference numeral 29 denotes a power lamp formed of an LED, 30 denotes a GPS reception lamp, 31 denotes a transfer lamp, and 3 denotes a transfer lamp.
Reference numerals 2 and 33 denote lamps equipped with a temperature recording device. The power lamp 29 lights up when the power button 27 is turned on,
Turns off during OFF operation. Also, it flashes when operating with the backup battery. The GPS reception lamp 30 is a GPS
Turns on while receiving a signal. The transfer lamp 31 is turned on while data is being transferred to the management server 8, and blinks when communication cannot be performed and a re-communication is waiting. The temperature recording device mounting lamp 32 is lit when a temperature recording device for refrigeration is mounted on the temperature recording device connector 25 and its identification number is detected,
The temperature recording device mounting lamp 33 is connected to the temperature recording device connector 2.
6 is equipped with a temperature recording device for freezing, and lights when its identification number is detected.

FIG. 4 is a block diagram of the vehicle-mounted terminal device. The reference numerals correspond to those in FIG. The control of the in-vehicle terminal device 20 is performed by the microcomputer 40. And
The memory inside the microcomputer 40 stores the on-board terminal device 20.
Has a unique terminal number. GPS receiving circuit 4
A microcomputer 1 processes a GPS signal received by the GPS antenna 13 and generates position information including latitude and longitude.
Send to 0. The communication circuit 42 receives from the microcomputer 40 the position information sent from the GPS receiving circuit 41 and the temperature data read from the temperature recording device attached to the temperature recording device connectors 25 and 26, and receives the data via the wireless antenna 14. It transmits to the public wireless communication network 4. The clock circuit 43 measures the current time and supplies it to the microcomputer 40.

Returning to FIG. 1, the trucks 1 and 2 are moved from the GPS satellites 3 at predetermined time intervals, for example, 10 minute intervals, by the loaded on-board terminal device 20 during operation toward their respective destinations. Upon receiving the GPS signal, it transmits position information indicated by north latitude and east longitude to the management server 8 via the public wireless communication network 4 and the router 7. When the management server 8 receives the position information from each of the tracks 1 and 2 as described above, the management server 8 stores the information in a memory, displays a map on a display as necessary, and stores therein a map from the departure point to the current position. Operation trajectories can be displayed.

For example, when the truck 1 arrives at the destination, the temperature recording devices 11 and 12 are moved to the low-temperature storages 9 and 1.
0 and set in the temperature recording device connectors 25 and 26 of the in-vehicle terminal device 20. When these are set, the in-vehicle terminal device 20 reads the temperature data at predetermined time intervals from the temperature recording devices 9 and 10 and
The information is transmitted to the management server 8 via the router 7. When the management server 8 receives the temperature data in this manner, it stores it in the memory, and can display the temperature history in the low-temperature storage from the departure point to the destination on the screen as necessary.

Next, the temperature recording devices 11 and 12 will be described. FIG. 5 is a perspective view of the temperature recording device, and FIG.
5A shows a state in which the temperature recording apparatus main body and the mounting holder are separated, and FIG. 5B shows a state in which the two are integrated. In FIG. 5, reference numeral 50 denotes a temperature recording device main body, 51 denotes a temperature recording device holder, and 53 denotes a mounting holder. The temperature recording device main body 50 has a bottomed cylindrical metal case 50A in which a temperature sensor, a CPU, a memory, a battery, and the like are housed. The opening of the metal case 50A is electrically insulated from the metal case 50A. Cover 50B, and has a shape like a button-type battery as a whole. Then, similarly to the button type battery, the metal case 50A and the lid member 50B are used as electrodes to be connected to the outside.

The temperature recording device main body 50 is mounted on a temperature recording device holder 51 made of plastic, and a locking flange 52 is formed at the lower end of the temperature recording device holder 51. The attachment holder 53 has a structure that can be engaged with and integrated with the temperature recording device holder 51. After the locking flange 52 of the temperature recording device holder 51 is inserted into the insertion portion 54 of the attachment holder 53, the temperature recording device holder 51
Is pushed in to engage and integrate with the mounting holder 53 as shown in FIG. Then, the mounting holder 53
A screw is passed through the screw hole 55 so that it can be fixed to the wall surfaces of the low-temperature refrigerator 9 and the low-temperature refrigerator 10.

FIG. 6 is a block diagram of the temperature recording device. This circuit is housed in the metal case 50A described above, and is controlled by the CPU 60. Power for operation is supplied by a battery 64. Also, the memory 61
As shown in FIG. 7, the area is divided into an area for storing temperature history data, an area for storing temperature distribution data, and an area for storing temperature alarm history data, and each data is recorded. Further, a temperature measurement start time, which is a time at which the temperature recording device starts measuring temperature, an installation location code indicating whether the installation location of the temperature recording device is a refrigerator or a freezer, and a terminal of the in-vehicle terminal device 20. The number is also recorded.

The installation location code is preliminarily written in each memory for each of the temperature recording devices for the refrigerator and the freezer. The temperature recording devices for the refrigerator and the freezer are divided into temperature recording device holders 51.
The colors are different and labels for refrigerators and freezers are attached so that they can be identified at a glance. The terminal number is inserted into the temperature recording device connectors 25 and 26 of the on-board terminal device 20, and the power button 2
7 is pressed, the microcomputer 40 of the in-vehicle terminal device 20 clears the temperature history data storage area, the temperature distribution data storage area, and the temperature alarm history data storage area of the memory 61, and also starts the temperature measurement start time and the microcomputer 40 The terminal number recorded in the memory is written.

The CPU 60 receives a time signal from the clock circuit 62, acquires temperature data from the digital temperature sensor 65 at preset time intervals, for example, one minute intervals, and sequentially stores the temperature data in the temperature history data area of the memory 61. To go. Further, the acquired temperature data is counted for each of a plurality of divided temperature zones, and stored in the temperature distribution data area of the memory 61. Further, a temperature range is set, and when a temperature outside the range is detected, the time when the temperature goes out of the range is stored in the temperature alarm history data area of the memory 61.

Next, the digital temperature sensor will be described. A digital temperature sensor detects a temperature based on a change in physical properties of a semiconductor and outputs the digital signal as a digital signal. A RAM or an E ² RO holding an output of the temperature detecting unit or the like is provided.
M, a device in which a control circuit for controlling them and the like are integrated on one semiconductor chip. A plurality of buses can be connected to an external control device using only one signal line and a ground line.

Each digital temperature sensor has 64
Each bit has a unique identification number, and an external control device can identify a plurality of bus-connected digital temperature sensors based on the identification numbers. In addition, each digital temperature sensor can hold two threshold values of a user-programmable high temperature and a low temperature for an alarm, and can generate an alarm when the detected temperature is out of a predetermined range.

FIG. 8 is a block diagram of the digital temperature sensor. The input / output circuit 70 includes a port for connecting a signal line DQ for transmitting data when communicating with one wire, and a 64-bit mask R engraved with a laser.
It has OM. Then, the 64-bit mask R
In the OM, an identification number unique to each digital temperature sensor is written.

The scratch pad memory 71 is a 9-byte RAM, and is used for holding data when communicating with an external control device. The control circuit 72 is configured by a logic circuit, and performs communication by process control in response to a command sent from an external control device. The temperature detecting section 73 detects a temperature based on a change in the physical properties of the semiconductor, and stores the data in a temperature register in the temperature detecting section 73 as 2-byte temperature data. At that time, the temperature detection unit 73 can measure in a range of -55 ° C to + 125 ° C in 0.5 ° C steps, for example.

The high-temperature threshold register 74 and the low-temperature threshold register 75 hold a high-temperature threshold and a low-temperature threshold for temperature alarm, respectively. These thresholds can be rewritten by a command from an external control device. The environment setting register 76 holds environment setting data for determining the resolution of the measured temperature and the maximum temperature conversion time. Further, when transmitting data to an external control device, the CRC generation circuit 77 generates a CRC code for data error check and provides the data to the external control device. When a power supply is connected to the power supply line _VDD , the power supply detection circuit 78 detects the power supply and supplies a detection signal to the input / output circuit 70.

As shown in FIG. 9, in each byte of the scratch pad memory 71, the temperature data measured by the temperature detection unit 73 is stored in the first 0th byte and the first byte, respectively. And stored separately. In the second and third bytes, a high-temperature threshold value and a low-temperature threshold value for alarm are transferred from a high-temperature threshold value register 74 and a low-temperature threshold value register 75 on the E ² ROM every time the power is turned on. In the fourth byte, the environment setting data is transferred from the environment setting register 76 on the E ² ROM every time the power is turned on. The fifth to seventh bytes are not used, and the CRC code is written by the CRC generation circuit 77 in the eighth byte.

Next, a communication procedure between the digital temperature sensor and the external control device will be described. In a system using this digital temperature sensor, the external control device uses a unique communication method so that a specific sensor can be selected and communicated even when a plurality of digital temperature sensors are bus-connected to the same signal line. Is adopted. Therefore, a communication procedure when a plurality of digital temperature sensors are bus-connected to the same signal line will be described.

First, the external control device is connected to the signal line DQ
In order to check how many digital temperature sensors are connected to the digital temperature sensor, an identification number of each digital temperature sensor is obtained, and based on the result, temperature data is obtained from necessary digital temperature sensors. All necessary communication between the external control device and the digital temperature sensor starts from an initialization sequence.

FIG. 10 is a time chart showing a procedure for reading out the sensor identification number. The initialization sequence is completed by transmitting a reset pulse from the external control device and responding to each digital temperature sensor.

The signal line DQ is H (high) when in the idle state. As shown in FIG. 11, the reset pulse is an L (low) pulse for a predetermined time T ₁ (for example, 480 μsec) or more, and then the external control device sets the signal line DQ to H to enter the reception mode. After the digital temperature sensor is connected to the signal line DQ are waiting for a predetermined time T ₂ (e.g., 15～60Myusec), as indicated by a dotted line in FIG. 11, a predetermined time T ₃ (e.g., 60 When the level of the signal line DQ is lowered to L for at least 240 μsec, the presence of the signal line DQ is indicated. This becomes a response signal to the reset pulse.

When the external control device receives this response signal, it is known that at least one digital temperature sensor is connected to the signal line DQ. Then, the external control device next outputs a search command for confirming the identification number of each digital temperature sensor to the signal line DQ. The commands output from the external control device are all composed of 8 bits, and the search command is, for example, “1, 1” as shown in FIG.
1,1,1,0,0,0,0 ", which is F0H in hexadecimal.

When such a search command is received,
Each digital temperature sensor outputs its identification number to the signal line DQ one bit at a time starting from the 0th bit. Next, a method of outputting the identification number will be described.

Here, for the sake of simplicity, three digital temperature sensors are connected to the signal line DQ, and their identification numbers are, respectively, sensor 1... 11010... Sensor 2. The description will be made in the case of sensor 3 ... 00010.

When the external control device outputs the search command, each digital temperature sensor outputs the value of the first bit (bit 0) of the identification number of each digital temperature sensor. That is, the sensors 1 and 3 output “0” (in other words, pull the signal line DQ to the L side), and
Outputs “1” (in other words, the signal line DQ is
Side). Then, the signal line DQ is set to L
If there is at least one sensor pulling to the side, as a result, the signal line DQ becomes L, and the external control device reads “0”.

FIG. 13 is a diagram showing a bit-by-bit output method of the digital temperature sensor in response to a search command. First, pull down the only signal line DQ external control device a short period T ₄ to L. At this time, the sensor holds H when outputting “1”. As a result, the level of the signal line DQ becomes
The result is as shown in FIG. On the other hand, the sensor is "0"
When outputting, the external control unit pulls only the signal line DQ period T ₄ to be simultaneously sensor as pulled L L, further, to hold the L to the period T ₄ after even a period T ₅ has elapsed. As a result, the level of the signal line DQ is
3 (b). The external control device operates during the period T ₄
By checking the level of the signal line DQ after the lapse of time, it can be confirmed whether the sensor outputs “1” or “0”.

Next, each digital temperature sensor outputs the complement value of the 0th bit. That is, the sensors 1 and 3
The sensor 2 outputs “1”, and the sensor 2 outputs “0”. As a result, the signal line DQ becomes L, and the external control device outputs “0”.
Read. By reading “0, 0” in this manner, the external control device has a mixture of a sensor having “1” in the 0th bit and a sensor having “0” in the 0th bit. You can see that.

Here, the external control device can judge as follows based on the level change of the signal line due to the two outputs of the value of the bit having the identification number and the complement thereof by each digital temperature sensor. .

That is, if the value is "0,0", there are sensors whose bit values are different from each other.
If it is "0,1", all connected sensors have a bit value of "0", and if it is "1,0", all connected sensors have a bit value of that bit. If the value is “1” and “1, 1”, it is understood that the sensor is not connected to the signal line.

As described above, if it is determined that a sensor having a "1" in the 0th bit and a sensor having a "0" are mixed, the external control device determines that bit. In addition to storing the position, one "0" is written into the memory as the 0th bit of the first sensor identification number, and "0" is output. The output of “0” is a sensor having “0” at the 0th bit of the identification number. In the above example,
This is a search command for the next bit for the sensors 1 and 3. Therefore, the sensor 2 having “1” at the 0th bit of the identification number does not respond thereafter.

The first bit of the identification numbers of the sensors 1 and 3 is
Since both are “0”, the sensors 1 and 3 both have “0,
1 "is output. As a result, the external control device determines that the values of the first bits of all the selected sensors are “0”. As a result, "0" is written into the memory as the first bit of the first sensor identification number, and "0" is output, and a search command of the second bit is issued to both.

The second bit of the identification number of the sensor 1 is "1".
Output “1, 0”, whereas the sensor 3
The second bit of the identification number is "0" because it is "0".
Is output. As a result, the signal line becomes "0, 0", and the external control device knows that there are sensors whose bit values are different from each other. As a result, the bit position is stored, “0” is written to the memory as the second bit of the first sensor identification number, and “0” is output, and “0” is output to the second bit of the identification number.
In the above example, a search command of the third bit is issued to the sensor 3. Therefore, the sensor 1 having “1” in the second bit does not respond thereafter.

Thereafter, the external control device repeats the same processing for only the sensor 3 to determine the first identification number of the digital temperature sensors connected to the signal lines.

When the first identification number is determined, the external control device repeatedly executes a new search sequence from the beginning. Meanwhile, the second identification number is sequentially stored. In the last time, "1" is written to the memory as the first bit of the second sensor identification number at the first bit, which is the bit position branched last between "0" and "1". Is output, and a search command of the first bit is issued to the sensor having “1” in the first bit of the identification number, in the above example, the sensor 1.

Thereafter, the external control device repeats the same processing for only the sensor 1 to determine the second identification number of the digital temperature sensors connected to the signal lines.

When the second identification number is determined, the external control device repeatedly executes a new search sequence from the beginning. Meanwhile, the third identification number is sequentially stored. In the last time, at the 0th bit, which is the bit position finally branched between “0” and “1”, this time,
Write “1” to the memory as the third bit of the third sensor identification number in the memory, and output “1” to the sensor having “1” at the 0th bit of the identification number. In response, the first bit search command is issued. Therefore, the sensors 1 and 3 having “0” in the 0th bit do not respond thereafter.

Thereafter, the external control device repeats the same processing for only the sensor 2 to determine the third identification number of the digital temperature sensors connected to the signal lines.

In this way, the external control device can know the identification numbers of all the digital temperature sensors connected to the signal line DQ.

On the other hand, when obtaining the temperature data from the digital temperature sensor, the external control device issues a command for designating the identification number of the digital temperature sensor and instructing the digital temperature sensor to transmit the temperature data. The temperature data is obtained by instructing the transmission of the data. Next, a method of acquiring temperature data from the digital temperature sensor will be described.

FIG. 14 is a time chart showing the procedure for acquiring the sensor temperature. First, an initialization sequence is performed in which a reset pulse is transmitted from the external control device and each digital temperature sensor responds thereto. Thereafter, a designation command is transmitted to designate a digital temperature sensor from which temperature data is to be obtained. The specified command is
Like the above search command, 8 bits, for example,
Transmit 55H data.

Immediately thereafter, the identification number of the digital temperature sensor whose temperature data is to be obtained is transmitted as the designated address. The transmission, as shown in FIG. 15, only the signal line DQ short time T ₆ to H after pulled L "1", to H after the lower the T ₇ signal line DQ to L long time ""0" is continued by 64 bits. Thus, when the designated address is transmitted and each digital temperature sensor receives it, only the digital temperature sensor having that identification number will accept the next command.

Then, after transmitting the designated address, the external control device transmits a temperature measurement command subsequently thereto. The temperature measurement command also transmits, for example, 44H data in 8 bits, similarly to the above-described commands.
The digital temperature sensor specified by the specified address and receiving the temperature measurement command writes the temperature data from the temperature detection unit 73 (FIG. 8) to the scratch pad memory 71.

The digital temperature sensor is a scratch pad.
A predetermined time (about 200 msec) is required to transfer the temperature data to the memory 71. Therefore, the external control device waits for the predetermined time, transmits a reset pulse again, and causes each digital temperature sensor to transmit. An initialization sequence of responding thereto is performed. Then, after transmitting the specified address specifying the same identification number as the previously transmitted one again, the memory read command is transmitted subsequently.

Upon receiving the command, the designated digital temperature sensor continuously outputs data of 9 bytes (72 bits) including all data of the scratch pad memory 31 and CRC data, one bit at a time. In this case, "1" and "0" are output in the same manner as in the response to the search command described with reference to FIG. That is, when the output "1", the external control unit pulls only the signal line DQ period T ₄ to L. At that time, the sensor holds H. When outputting “0”, when the external control device lowers the signal line DQ to L for the period T ₄ , the sensor simultaneously lowers the signal line DQ to L, and further, the sensor continues the period T ₄ after the elapse of the period T _4. Hold L until ₅ elapses. Such processing is repeated for 9 bytes (72 bits). As a result, a continuous level change of H and L appears on the signal line DQ as shown in FIG. 16, and the external control device can read the contents to read the contents of the scratch pad memory 31.

Since the first two bytes are temperature data, the first two bytes of the read nine bytes are
Extract the bite and hold it as temperature data.

Such a digital temperature sensor 65 is connected to the CPU 60 of the temperature recording device. that time,
The operating power of the digital temperature sensor 65 can be _supplied via the power supply line V _DD , or can be obtained by charging the capacitor C by keeping the signal line DQ high for a certain period of time or longer. .

In this case, although only one digital temperature sensor is connected to the CPU 60 via the signal line, the reading of the sensor identification number described above is executed in the same manner as in the case where there is a plurality. Further, the acquisition of the temperature data is also executed while specifying the identification number, as in the case where there are a plurality of pieces.

Next, a procedure for using the in-vehicle terminal device will be described. First, the in-vehicle terminal device 20 is set in an appropriate place in the cab of a truck, for example, in a passenger seat, and the power supply connector 21 is inserted into a cigarette lighter outlet of the truck. Then, the temperature recording devices 11 and 12 to be used are set in the temperature recording device connectors 25 and 26. Temperature recording device 1
When 1, 1 are set, the microcomputer 40 of the in-vehicle terminal device 20 sets the temperature recording device mounting lamps 32, 3 respectively.
3 is turned on.

When the power button 27 is pressed in this state, the temperature history data storage area, temperature distribution data storage area, and temperature alarm history data storage area of the memory 61 of each of the temperature recording devices 11 and 12 are cleared, and the microcomputer is reset. The terminal number recorded in the memory of the memory 40 is
Is written to. The time at that time is set in the memory 61 of the temperature recording devices 11 and 12 as the temperature measurement start time. The temperature recording devices 11 and 12 simultaneously start the measurement operation. Then, the temperature recording devices 11, 1
2 is removed from the in-vehicle terminal device 20, the truck 1 is set in the refrigerator compartment 9 and the refrigerator compartment 10, and then the truck 1 is started.

During the operation of the truck 1, the temperature recording device 1
1 and 12 measure the temperature in the refrigerator low-temperature refrigerator 9 and the refrigerator low-temperature refrigerator 10 at predetermined time intervals, for example, one minute intervals, and store them in the temperature history data storage area of the memory 61. . Further, the temperature is, for example, −20 ° C. or less, −1
The temperature is divided into zones such as 9 to -15 ° C., -14 to -10 ° C.,..., And the obtained temperatures are distributed to each zone and counted, and are stored in the temperature distribution data storage area of the memory 61. . Further, when the temperature exceeds or falls below a preset temperature range, the start time and the end time are stored in the temperature alarm history data storage area of the memory 61.

Further, the vehicle-mounted terminal device 20 is controlled by the GPS antenna 13 at predetermined time intervals, for example, every 10 minutes.
The PS signal is received, the latitude and longitude are obtained as current position information, and transmitted to the management server 8 together with the terminal number from the wireless antenna 14 via the public wireless communication network 4. When receiving the terminal number and its location information, the management server 8 searches for the corresponding flight number based on the correspondence table between the flight number and the terminal number held separately, and stores the time and location information at that time as the flight name. Is held in correspondence with. Then, if necessary, a map is displayed on the display, and the operating locus and the current position of the vehicle are displayed therein.

When the vehicle arrives at the destination, the temperature recording devices 11 and
12 is collected and set in the temperature recording device connectors 25 and 26 of the in-vehicle terminal device 20, and then the transmission button 28 is pressed. When the transmission button 28 is pressed, the microcomputer 40 of the in-vehicle terminal device 20 first reads the terminal numbers sequentially from the temperature recording devices 11 and 12 and compares them with its own terminal number. , Temperature recording device mounting lamp 3
An error display is made by blinking 2, 33 or the like, and the subsequent processing is stopped.

On the other hand, if the terminal numbers match, after transmitting the terminal number, the installation location code, the measurement start time, and the data string as temperature history data recorded in the memory 61 are read out, and the public Wireless communication network 4
To the management server 8 via the. When the temperature recording devices 11 and 12 are set in the temperature recording device connectors 25 and 26, respectively, the data of the temperature recording devices 11 and 12 are sequentially read and transmitted. When the transmission is completed, the in-vehicle terminal device 20 is removed from the truck 1 and brought back to the office. That is, the in-vehicle terminal device 40 only needs to insert the power supply connector 41 into the cigar lighter insertion portion, so that it can be mounted on any truck regardless of the truck 1 or 2.

Upon receiving the terminal number, the installation location code, the measurement start time, and the temperature history data, the management server 8 holds them in association with the flight number. Then, when there is an instruction to display the temperature history of the flight, for example, as shown in FIG. 17, the position information such as the starting point, the transit point, and the destination are linked to the temperature data on the basis of time. To display on the display. Looking at the display, if there is a time when the temperature rises or falls abnormally, it is immediately known where it occurred and the door of the cold storage was opened at that place or the frozen food was refrigerated. It is possible to analyze the cause of the temperature abnormality, such as putting it in a low-temperature refrigerator.

Further, not only the temperature history data but also the temperature distribution data and the temperature alarm history data described above are stored in the temperature recording device 1.
Alternatively, the information may be read out from the storage devices 1 and 12 and transmitted to the management server 8 so that they can be confirmed by the management server 8 or a terminal of each office. In this case, for example, it is also possible to link the temperature alarm history data and the operation trajectory data and display the operation section corresponding to the alarm temperature in a different color on a map.

In this way, the management server 8 controls and manages various information of the transport company to which the trucks 1, 2 and the like belong. Then, in the sales offices in various places of the transportation company, when confirming the operation status of the truck belonging to each sales office and the temperature history of the product at the time of operation, the management server 8 is accessed via the Internet, Track trajectories of trucks and temperature histories of cargo transported by them can be acquired and displayed on a display or printed out.

Further, by collecting data of all transportation flights of the company in the management server 8, software for associating position information, temperature history information, and latitude and longitude information with positions on a map is obtained. , Etc., can be centrally managed for various processing software.

In the above embodiment, the temperature recording device 1
The transmission button 28 is pressed to start the transmission after setting 1, 12 in the temperature recording device connectors 25, 26.
The temperature recording device connectors 25 and 26 are monitored, and when the temperature recording devices 11 and 12 are set therein, the temperature recording devices 11 and 12 are automatically detected, and the data reading and transmitting operations are automatically started. Good. By doing so, the transmission button 28 becomes unnecessary.

In the above embodiment, a truck is described as an example of a moving body for transportation. However, the present invention is not limited to this, and the present invention can be applied to a case where a ship or an aircraft is used.

[0068]

Since the present invention is configured as described above, it has the following effects. That is, the on-vehicle terminal device for operation and temperature management according to claim 1 manages the position information received by the GPS receiving antenna and the GPS receiving circuit by the public wireless communication circuit and the public wireless antenna at predetermined time intervals. A means for transmitting to a server and a means for reading temperature history data from a temperature recording device connected to a temperature recording device connector and transmitting the data to a management server by a public wireless circuit and a public wireless antenna are provided. As a result, by loading the on-board terminal device for operation and temperature management on a moving object for cargo transportation, the operation state can be checked in real time on the management server side, and when the frozen or chilled food is transported. In addition, it is possible to easily confirm the temperature history of the transported cargo in association with the position information.

The on-vehicle terminal device for operation and temperature management according to the second aspect holds a unique terminal number internally, and attaches a terminal number when transmitting the position information and temperature history data. Therefore, when the management server receives the position information and the temperature history data, it is possible to easily determine which in-vehicle terminal device has sent the information.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an operation / temperature management system using an operation / temperature management in-vehicle terminal device of the present invention.

FIG. 2 is a view showing a transportation truck.

FIG. 3 is an external view of an in-vehicle terminal device.

FIG. 4 is a block diagram of an in-vehicle terminal device.

FIG. 5 is a perspective view of a temperature recording device.

FIG. 6 is a block diagram of a temperature recording device.

FIG. 7 is a memory map of the temperature recording device.

FIG. 8 is a block diagram of a digital temperature sensor.

FIG. 9 is a memory map of the digital temperature sensor.

FIG. 10 is a time chart showing a procedure for reading a sensor identification number.

FIG. 11 is a diagram showing a reset pulse and a response signal.

FIG. 12 is a diagram showing a specific example of a search command.

FIG. 13 is a diagram illustrating a bit-by-bit output method of the digital temperature sensor with respect to a search command.

FIG. 14 is a time chart showing a sensor temperature acquisition procedure.

FIG. 15 is a specific example of a sensor addressing signal.

FIG. 16 is a diagram illustrating an example of transmitting memory data.

FIG. 17 is a diagram showing an example of a temperature history display screen.

[Explanation of symbols]

 1, 2, truck 3, GPS satellite 5, 6, base station 7, router 8, management server 9, refrigerated low-temperature storage 10, refrigeration low-temperature storage 11, 12, temperature recording device 13, GPS antenna 14, radio antenna 20 ... on-board terminal device 21 ... power supply connector 25, 26 ... temperature recording device connection device 27 ... power button 28 ... transmission button 50 ... temperature recording device main body 51 ... temperature recording device holder 53 ... mounting holder

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G06F 17/60 112 G06F 17/60 112G 5J062 114 114 114 G07C 5/00 G07C 5/00 Z G08C 17/00 G08C 19/00 T 19/00 B 17/00 A (72) Inventor Hiroyuki Kurihara 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 2F073 AA32 AB01 AB14 BB01 BC02 CC03 CC03 CC09 CC12 DD06 DE13 EE11 EE12 EF09 FG01 FG02 GG01 GG04 GG06 GG07 GG08 GG09 3E038 AA07 BB05 CA03 CA07 GA02 HA05 HA06 3F022 BB02 LL05 MM08 MM42 PP04 PP06 3L045 AA02 BA02 CA02 MA01 PA01 MA01 NA01 DD00 DD01 EE01 FF03 FF04 GG03 GG04 GG07 GG09 5J062 AA08 BB01 CC07 HH04

Claims (2)

[Claims] 1. An operation / temperature control for loading on a moving body for cargo transportation, transmitting position information to the management server during cargo transportation, and transmitting temperature history data of the transportation cargo after the transportation is completed. A vehicle-mounted terminal device, comprising: a GPS receiving antenna, a GPS receiving circuit, a public wireless antenna, a public wireless communication circuit, and a temperature which is installed at the same temperature condition as the transported cargo and detected at predetermined time intervals. A temperature recording device connection device for connecting a temperature recording device stored in a memory as history data;
Means for transmitting position information received by a receiving antenna and a GPS receiving circuit to a management server by the public wireless communication circuit and the public wireless antenna; and temperature history data from a temperature recording device connected to the temperature recording device connector. And a means for reading the information and transmitting the information to the management server by a public wireless circuit and a public wireless antenna. 2. An operation / operation system according to claim 1, wherein a unique terminal number is held inside, and when transmitting said position information and temperature history data, a terminal number is added and transmitted. In-vehicle terminal device for temperature management.