JPH0763583A - Data collecting device - Google Patents

Abstract

PURPOSE:To start or terminate measurement automatically by starting measurement by the output corresponding to the dark or light state of an illuminance sensor, and terminating measurement by the output corresponding to the light or dark state of the illuminance sensor. CONSTITUTION:An illuminance sensor 4 is supplied with voltage Vcc through a resistance R. The output of the sensor 4 is inputted to the minus terminal of a comparator 6 and compared with the fixed voltage Vs inputted to a plus terminal, and the output corresponding to the light-and-darkness of the sensor 4 is taken out of the comparator 6 and supplied to a processing means 7. The means 7 starts measurement by the output corresponding to the light state of the sensor 4 and stores the output of a measuring sensor 5 for temperature or the like into a memory 8, or terminates measurement and storage by the output corresponding to the dark state of the sensor 4. At the regenerating time, an operating part 3 is operated to execute regeneration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collecting device for collecting measured data from various sensors such as a temperature sensor, storing the measured data in a memory, and reproducing it as needed.

[0002]

2. Description of the Related Art The applicant provides a card-shaped data collecting device in which a sensor, a memory and the like are integrally formed in Japanese Patent Publication No. 5-29046.

Since this type of data collecting device is small,
For example, it is possible to move along with fresh products such as meat, seafood, and fruits and vegetables, record the temperature data, etc., and acquire the data for indicating that the product has been transported within a predetermined temperature range.

[0004]

However, in the case of using such a data collecting device, it is often the case that the measurement start and the measurement end are manually performed by operating the push button switch, etc. Data cannot be acquired, acquired data does not end, extra unnecessary data continues to be measured, necessary data is updated from memory,
It may be erased, and the battery may continue to run down. Further, when a card-shaped data collection device is provided for each of many transportation containers for storing the transported items, the number becomes very large, and there is a problem that the operation of starting and ending the measurement becomes complicated.

In view of the above points, an object of the present invention is to provide a data collecting device capable of automatically starting and ending the measurement.

[0006]

According to the present invention, measurement is started by a measurement sensor for detecting measurement data, an illuminance sensor for detecting ambient brightness, and an output corresponding to a dark or bright state of the illuminance sensor. The data collecting device is provided with a processing means for storing the measurement data of the measurement sensor in a memory and ending the measurement by an output corresponding to the bright or dark state of the illuminance sensor.

[0007]

1 is an explanatory view showing an embodiment of the present invention.

The data collecting device 1 has, for example, a card shape or another shape as shown in the drawing, and sets the measurement start time.
Display unit 2 used for data display, etc., operation unit 3 for setting and setting time, displaying and reproducing data, starting and ending necessary measurement, and setting, detecting ambient brightness and darkness An illuminance sensor 4, a measurement sensor 5 for measuring temperature and the like are provided and driven by a battery or the like (not shown).

Then, as shown in FIG. 2, the data collection device 1 is provided together with the transported article D in the transportation container C in the refrigerating compartment B of the transportation vehicle A. When this shipping container C is covered,
Alternatively, when the door of the refrigerating room B is closed, the brightness around the data collection device 1 becomes dark, and the output of the illuminance sensor 4 is used to start the acquisition of data to be described later. When it is finished and it becomes bright, data measurement and data collection are finished, and the data in the meantime is read out by using a reproducing device not shown.

FIG. 3 is an explanatory diagram of a circuit example of the data collection device 1. The voltage Vcc is supplied to the illuminance sensor 4 such as a photodiode or CdS via the resistor R, and the output of the illuminance sensor 4 is input to the negative terminal of the comparator 6 and compared with the constant voltage Vs input to the + terminal of the illuminance sensor. The output corresponding to the brightness of 4 is taken out from the comparator 6 and supplied to the processing means 7 such as μcpu. The processing means 7 starts measurement by the output corresponding to the bright state of the illuminance sensor 4 and stores the output of the measurement sensor 5 such as temperature in the memory 8, or measures by the output corresponding to the dark state of the illuminance sensor 4, The storage ends. When reproducing, the operation section 3 is operated to execute it.

That is, referring to the operation explanatory view of FIG. 4, the illuminance sensor 4 has its resistance value lowered when the surroundings become dark,
It becomes smaller than the comparison voltage Vs of the comparator 6 and is shown in FIG.
The output of H indicated by is generated at time to. Due to this output, after a predetermined time t has elapsed, the time t1 in FIG.
The measurement is started by and the measurement data of the measurement sensor 5 is stored in the memory 8. This time t is for starting the measurement after the temperature shown in FIG. Then, the measurement is continued, and the processing means 7
As a result, the digital measurement data corresponding to FIG. 4C is stored / stored in the memory 3. When the transportation is completed, the door of the refrigerator B in FIG. 2 is opened, or the transportation container D is opened, the illuminance sensor 4 has a resistance value corresponding to the bright state, and the resistance value becomes higher than the comparison voltage Vs of the comparator 6 and becomes higher. 4 becomes the L level as shown in FIG. 4 (a), the measurement ends at time t2 shown in FIG. 4 (b), the processing means 7 stops storing / storing in the memory, and holds the data during that period. . Then, the data is reproduced by a reproducing device (not shown).

By the way, in order to prevent malfunction of the illuminance sensor 4 due to momentary light and dark, for example, when the dark state is changed from bright to dark and the dark state lasts for a predetermined Δt time or longer, it is treated as a dark state and shown in FIG. The measurement is started t hours after the time t1 '. Further, when the measurement is finished, it is treated as a bright state when the bright state is changed from dark to bright and continues for a predetermined Δt time or longer, and the measurement is finished at time t2 ′. For this reason, even if the illuminance sensor 4 of the card-shaped data collection device 1 is hidden by hand and momentarily becomes dark at time ts, it is ignored and the measurement does not start. In addition, even if a malfunction occurs during measurement, or a momentary lightening occurs at time ts' due to a temporary inspection or the like, the measurement is not stopped, and sufficiently reliable data can be recorded and acquired.

It should be noted that the same applies to a plurality of types of measurement sensors 5, and when only the measurement data at night is required outdoors or the like, the measurement data corresponding to the darkness and the lightness of the illuminance sensor 4 are similarly measured. Can be recorded.

When only the daytime data is required outdoors, the measurement can be started in response to the bright state output of the illuminance sensor 4, and the measurement and data recording can be ended in response to the dark state output.

Further, in a room or the like, when a person is present in the room, measurement is started using the bright output of the illuminance sensor 4 corresponding to lighting of the electric light, and measurement is performed corresponding to the dark output of the illuminance sensor 4 corresponding to turning off the light. , Data recording can also be ended. Further, even when the data of only the light-off period is acquired, the operation may be performed in response to the change of dark and light.

[0016]

As described above, according to the present invention, the acquisition of the measurement data is automatically started and stopped by detecting the light / dark state of the illuminance sensor. There is no need to perform start and end operations. Further, even if there are a large number of card-shaped data collection devices, they can simply be provided as they are at the installation location of the transportation container or the like, labor saving can be achieved, and the reliability of the data is greatly improved. Further, if the instantaneous bright and dark outputs are ignored or the measurement is started after the data becomes stable, the reliability is further improved. Further, if the data collecting device is configured in the shape of a card, it can be easily stacked, does not occupy a space, and is much easier to handle.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an embodiment of the present invention.

FIG. 3 is a structural explanatory view showing an embodiment of the present invention.

FIG. 4 is an operation explanatory diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 data collection device 2 indicator 3 operation part 4 illuminance sensor 5 measurement sensor 6 comparator 7 processing means 8 memory A transport vehicle B refrigerator C transport container D package

Claims (4)

[Claims] 1. A measurement sensor for detecting measurement data, an illuminance sensor for detecting ambient brightness, and an output corresponding to a dark or bright state of the illuminance sensor to start measurement and store the measurement data of the measurement sensor in a memory. A data collection device, comprising: a processing unit that stores the data and ends the measurement by an output corresponding to a bright or dark state of an illuminance sensor. 2. The data collecting apparatus according to claim 1, wherein each of the sensors, the memory, the processing means and the like are in the form of a card. 3. The data collecting apparatus according to claim 1, wherein the measurement is started after a predetermined time has elapsed since the output of the illuminance sensor was in a dark or bright state. 4. The data collecting apparatus according to claim 1, wherein the measurement is started or ended when the dark state output or the bright state output of the illuminance sensor lasts for a predetermined time or more. .