JP2566645B2 - Recording card system for temperature and humidity - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to fruits and vegetables, marine products and other fresh foods,
Alternatively, recording of atmospheric temperature, atmospheric humidity, etc. of these articles during storage, distribution and manufacturing of paper, textiles, pharmaceuticals, etc.
The present invention relates to a recording card system such as temperature and humidity used for recording indoor temperature, indoor humidity and the like in buildings and the like.

(Prior Art) Conventionally, as a recorder of this type, for example, a coil-shaped temperature sensor using a bimetal is used to output measurement data on a recording paper that moves sequentially mechanically and draw a temperature change graph. There is a simple type temperature recorder. In addition, temperature, humidity, and other various sensors can be attached to the measuring device with a built-in microcomputer to provide multiple functions, and the measured data is stored in a storage device that is integrated into the device. There is a so-called electronic data logger.

(Problems to be Solved by the Invention) However, in the case of the former disposable temperature recorder, since bimetal is used and the recording paper is mechanically moved, the temperature change with time is inaccurate and the measurement accuracy is poor. There is a problem. In addition, there is a problem that it is weak against vibration and its measurement accuracy is deteriorated, and even if it is used during the transportation of an object to be temperature-controlled, it is subject to vibration and accurate measurement is difficult. Further, the latter electronic data logger is multifunctional and expensive, and has a problem that it is inconvenient to carry and move in terms of dimensions. Furthermore, since the storage device is integrated into the measurement device, the electronic data logger itself must be connected to the computer when collecting, processing, and analyzing the measurement data, which is troublesome and labor-intensive. There is a bad problem.

It is an object of the present invention to provide a recording card system for temperature / humidity and the like which solves the conventional problems.

(Means for Solving the Problems) In order to solve the above problems, a recording card system for temperature / humidity, etc. according to the present invention is a system including a measuring unit, a data storage unit, and a data processing unit. The storage unit is a portable card type storage device that can store and distribute data, and can be detachably connected to both the measurement unit and the data processing unit. The measurement unit has a sensor unit detachably connected to the main unit. The sensor unit includes a predetermined sensor such as temperature and humidity, and a correction value storage unit that stores the correction data of the sensor for the reference characteristics that the sensor should have,
The main body section has a control function of correcting the data signal from the sensor based on the reference characteristics of the sensor and the correction data of the correction value storage section and storing it in the data storage section, and the data processing section sets the initial setting of the data storage section and the data. It has a reading function, a processing function, an output function, and an input function of necessary condition data at the time of initial setting.

(Operation) By connecting the data storage unit to the data processing unit, initial settings are made, and necessary condition data such as measurement location, date and time, article name of measurement object, and measurement conditions are input to the data storage unit. The data storage unit is installed at a desired location while being connected to the measurement unit to perform measurement, and the measurement data is corrected and stored in the data storage unit. The correction of the measurement data is based on the reference characteristic and the correction data of the used sensor for the reference characteristic, because the sensor used does not have the characteristic that completely matches the reference characteristic that the sensor of this kind originally should have. Be done. After the measurement is completed, the data storage section is removed from the measurement section, and the data is read by connecting to the data processing section again, and desired data processing, printout, etc. are performed, and the data storage section is again stored. The data storage unit can be repeatedly used by inputting the initial settings and the like.

(Example) Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is an external perspective view showing an embodiment of each device in the present invention, FIG. 2 is a block diagram showing an embodiment of a measuring unit in the present invention, and FIG. 3 is an implementation of a data processing unit in the present invention. It is a block diagram which shows an example.

In FIG. 1, (1) is a measurement unit, (2) is a data storage unit, and (3) is a data processing unit. The measurement unit (1) is a portable box-shaped device, is installed at a desired measurement location, and corrects measurement data from a predetermined sensor and then stores it in the data storage unit (2).
(4) is a main body part, (5) is a card insertion slot for connecting the data storage part (2), (6) is a display part for corrected measurement data, and (7) is removable from the main body part (4) Is a sensor unit connected to. The data storage unit (2) is a portable card type storage device capable of storing and distributing data, that is, generally called a RAM card (memory card), and has a connector built in at the end. Also, this RA
The M card has a built-in memory backup battery. The data processing unit (3) is generally a small-sized portable device, and performs initial setting of the data storage unit (2) before measurement and various conditions at the time of initial setting, as well as the data storage unit (2) after measurement. ) Data reading, data processing based on the read data, and output such as printout. In this data processing unit (3),
(8) is a card insertion slot for connecting the data storage section (2), (9) is a keyboard, (10) is a display section such as a liquid crystal,
(11) is a printer.

The measuring unit (1) has a hardware configuration as shown in FIG. 2, for example. In FIG. 2, (12) is a temperature sensor, (13) is a humidity sensor, (14) is a correction value storage unit composed of NVRAM (nonvolatile CMOS memory), (15) is an analog circuit, and (16) is A /. D converter, (17) is CPU, (18)
Is a ROM, (19) is a card connector, (20) is a battery checker, and (21) is a battery. Note that (2)
Is the data storage unit (RAM card), (4) is the main unit,
(6) is a display unit, and (7) is a sensor unit.

The sensor section (7) comprises the temperature sensor (12), the humidity sensor (13), and a correction value storage section (NVRAM) (14). This sensor part (7) is
Since 2) and 13 are deteriorated, they are detachably connected to the main body 4 and can be replaced. The correction value storage section (14) stores correction values of the temperature sensor (12) and the humidity sensor (13) for the reference characteristics of these sensors (12) and (13). Generally, these sensors (12) and (13) are selected from the same type of sensor group when they are replaced or used, but the characteristics of the individual sensors in the sensor group do not always match and there are variations. , The measurement accuracy varies depending on the sensor used. In order to correct this variation, the correction value of the used sensor with respect to the reference characteristic that the sensor should have is previously stored in the correction value storage section (14).
To be stored in. That is, the sensor part (7) is designed to maintain good accuracy in replacement and to be compatible with other sensor parts.

An example of correcting the sensor's varied characteristics in the sensor section (7) will be described with reference to FIGS.

FIG. 4 and FIG. 5 show examples of different temperature sensors of the same type, and (a) shows data of actual measurement values before correction,
(B) shows the data of the actually measured value after correction. FIG. 6, FIG.
The figures show examples of different humidity sensors of the same kind,
(A) shows the data of the actual measurement value before the correction, and (B) shows the data of the actual measurement value after the correction.

The data in each of the above figures is a graph of the actual measurement value actually shown by each sensor with respect to the set value (reference characteristic). The solid line shows the actual measurement value of each sensor, and the broken line shows the set value. For the temperature sensor, the permissible error is ± 0.1 ° C after correction, and for the humidity sensor, the permissible error is ± 3% Rh after correction.

As shown in FIGS. 4 to 7, the characteristics that have been varied before the correction are corrected so as to substantially match the reference characteristics that the sensor should have.

The data storage unit (2) is detachably connected to the card connector (19) of the main body unit (4) to correct data signals from the temperature sensor (12) and the humidity sensor (13) of the sensor unit (7). The data is stored in the data storage unit (2). For details, see temperature sensor (12), humidity sensor (1
The data signal from 3) is amplified by the analog circuit (15), converted into a digital signal by the A / D converter (16) and input to the CPU (17). At the same time, the CPU (17) is operated by the program stored in the ROM (18), and the ROM (18)
The above-mentioned data signal is corrected based on the reference characteristics of the temperature sensor (12) and the humidity sensor (13) and the correction data stored in the correction value storage section (14) of the sensor section (7), and the data is stored. Output to section (2). At this time, the corrected measurement data is stored in the data storage unit (2) according to the condition input in advance in the data storage unit (2), and at the same time, the corrected measurement data is output to the display unit (6). Moreover, since the measuring unit (1) is repeatedly used,
The battery checker (20) of the main body (4) can confirm whether or not the battery (21) has power.

In the above example, the temperature sensor (12) and the humidity sensor (13) are used as the sensor unit (7) of the measuring unit (1), but other sensors may be used instead of these sensors.

The data processing section (3) has a hardware configuration as shown in FIG. 3, for example. In FIG. 3, (22) is an input side interface, (23) is an output side interface, (24) is a CPU, (25) is a ROM, (26) is a RAM, (2
7) is a card connector. In addition, (2) is a data storage unit (RAM card), (9) is a keyboard, (10) is a display unit, and (11) is a printer.

In this data processing unit (3), the data storage unit (2) is detachably connected to the card connector (27), and the data storage unit (2) before measurement is read by the input from the keyboard (9) to ROM. By the program stored in (25) C
The PU (24) operates to perform the initial setting, and input the measurement location, date and time, article name of the measurement object, measurement conditions, and the like. Data such as the measurement location, date and time, article name of the measurement object, and measurement conditions that are input at the time of the above initial settings are RAM (26) at the same time as the initial settings.
May be stored in the RAM, or may be stored in the RAM (25) in advance before the initial setting and the content thereof may be input to the data storage unit (2). Also, for the data storage unit (2) after measurement,
The CPU (24) operates by the program stored in the ROM (25) by the input from the keyboard (9) to read the measurement data, and the measurement data is output to the display unit (10) and the printer (11). . The measurement data may be output as it is or may be output after being subjected to appropriate data processing such as graphing, maximum value, minimum value, and average value. Furthermore, the host personal computer is connected to the data processing unit (3) by RS.
The measurement data may be transferred for analysis and the like by being connected by a 232C code. After reading the data, the initial settings and the measurement conditions are input to the data storage unit (2) after the measurement in the same manner as before the measurement, and the data storage unit (2) is in a reusable state. In addition,
The data processing unit (3) is backed up by a battery (not shown).

(Effects of the Invention) As described in detail above, in the recording card system for temperature and humidity of the present invention, the data storage unit is a portable card type storage device in which data can be stored and distributed, and can be used as either a measurement unit or a data processing unit. Since it is detachably connectable, the measurement data can be stored, distributed, and processed easily by distributing the data storage unit between the measurement unit and the data processing unit. Moreover, since the data storage unit can be easily distributed because it is a portable card type, the measurement unit can be repeatedly used while being installed at a predetermined measurement place,
Even when there are a plurality of measuring units, a plurality of data storage units are distributed, while only one data processing unit is required, which is good in workability and economical.

In addition, the measurement unit is configured by detachably connecting the sensor unit to the main body unit, and the sensor unit includes a predetermined sensor such as temperature and humidity and a sensor correction value storage unit for the reference characteristic of the sensor, so that the sensor deteriorates. Then, the sensor unit can be replaced, and the sensor units to be replaced can be made compatible with each other. Moreover, because the main body has a control function of correcting the data symbol from the sensor based on the reference characteristics of the sensor and the correction data of the correction value storage unit and storing it in the data storage unit, the sensor unit must be replaced. Also, the measurement accuracy can be maintained in a good state. In addition, the measurement accuracy can be improved compared to the conventional one using a bimetal, and the measuring unit itself can be made simpler and more compact than a conventional multi-function electronic data logger, in a container, a truck, a ship, It can be easily installed in the cargo compartment of an aircraft.

Furthermore, since the data processing unit has the functions of initial setting, data reading, data output, and input of necessary condition data at the time of initial setting of the data storage unit, the data storage unit can store and distribute data. Coupled with that,
After reading the data after measurement, the data storage unit can be repeatedly used by inputting initial settings and conditions to the data storage unit. Moreover, computer processing of the measurement data in the data storage unit can be easily performed, and processing and analysis in which a plurality of data are superimposed can be performed. Furthermore, depending on the measurement conditions input at the time of initial setting of the data storage unit, even when the storage capacity of the data storage unit is constant, the measurement time can be changed to change the usage time of the data storage unit for effective use.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of each device in the present invention, FIG. 2 is a block diagram showing an embodiment of a measuring unit in the present invention, and FIG. 3 is an implementation of a data processing unit in the present invention. Block diagrams showing examples, FIG. 4, and FIG. 5 show examples of different temperature sensors of the same type, respectively, (a) is a graph of actual measurement values before correction, and (b) is actual measurement values after correction by the sensor unit. , FIG. 6 and FIG. 7 show examples of different humidity sensors of the same kind, (a) is a graph of actual measured values before correction, (b)
Is a graph of actual measurement values after correction by the sensor unit. 1 ... Measuring unit, 2 ... Data storage unit, 3 ... Data processing unit, 4 ... Main body unit, 5,8 ... Card insertion slot, 6,10 ... Display unit, 7 ... Sensor unit, 9 …… Keyboard, 11 …… Printer, 12 …… Temperature sensor, 13 …… Humidity sensor, 14
…… Correction value storage, 15 …… Analog circuit, 16 …… A / D converter, 17,24 …… CPU, 18,25 …… ROM, 19,27 …… Card connector, 26 …… RAM.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A 61-265528 (JP, A) JP-A 62-215822 (JP, A) JP-A 62-265526 (JP, A) JP-A 62- 170828 (JP, A) JP 62-88074 (JP, A) JP 59-183357 (JP, A) Actually opened 62-141728 (JP, U) Actually opened 61-174638 (JP, U)

Claims (1)

(57) [Claims] 1. A system comprising a measuring unit, a data storage unit and a data processing unit, wherein the data storage unit is a portable card type storage device capable of storing and distributing data. It is detachably connectable to any of the processing parts, the measuring part is detachably connected to the main body part, and the sensor part corresponds to the predetermined sensor such as temperature and humidity and the standard characteristics that this sensor should have. It has a correction value storage unit that stores the correction data of the sensor, and the main body unit has a control function that corrects the data signal from the sensor based on the reference characteristics of the sensor and the correction data of the correction value storage unit and stores it in the data storage unit. The data processing unit is provided with a storage unit for recording temperature, humidity, etc., which is provided with the initial setting of the data storage unit, the reading and processing of data, the output function and the input function of the necessary condition data at the time of initial setting. De system.