JPH0521197Y2 - - Google Patents

Description

[Detailed description of the invention] This invention continuously detects environmental conditions such as temperature, humidity, pressure, etc. at predetermined timing, records and holds this detected value data in a storage device, and stores these stored detected values. The present invention relates to a storage/recording device configured such that data can be read to an external device.

Conventionally, devices for detecting and recording temperature etc.
For example, a common method is to install a temperature sensor to detect the temperature, amplify the detection signal of the temperature sensor with an amplifier to obtain an electrical signal proportional to the temperature change, and record this electrical signal on an analog recorder. It is true. On the other hand, in the field of automatic control of temperature, etc., digitization of signals is required for the convenience of handling detected temperature as a feedback signal. A method of converting the signal into a digital signal and recording it on a digital recorder is often used.

However, conventional temperature recording devices detect temperature, etc. at predetermined timing, and record and display the detected values digitally. To do this, it is necessary to connect a storage device such as a computer to the output circuit of the recording device, and to control this storage device with a program to programmably store the detected value data. Therefore, in order to add a function to store and hold detected value data to a conventional temperature recording device, there are problems in that the device becomes larger and the equipment cost increases. Further, in order to simultaneously detect, record, and store information such as humidity and pressure in addition to temperature, it is inevitable that the configuration becomes more complicated and the manufacturing cost increases.

Therefore, as a result of various studies to overcome all the problems of the conventional devices mentioned above, the present inventor installed a large number of various sensors for detecting temperature, humidity, etc., and connected these sensors selectively to a detection circuit. , amplify the output signal of the selected sensor and convert it A/D.
By configuring data to be sequentially stored in a semiconductor storage device such as RAM at a predetermined timing, each control element can be controlled by a common controller that can be adjusted externally, and a data buffer can be connected to the semiconductor storage device for connection with external equipment. It has been found that it is possible to realize a storage and recording device for temperature, etc., which can read out the data stored and held in the storage device at any time by doing so, can be manufactured in a small size and at low cost, and can be easily installed. I figured it out.

Therefore, an object of the present invention is to incorporate a semiconductor memory device, provide a plurality of sensors, connect these sensors appropriately, and digitize the output signals of the sensors and store them in the semiconductor memory device at a predetermined timing. A programmable storage and recording device for temperature, etc., which is controlled by a common controller that can be externally adjusted so that the data stored and held in the semiconductor storage device can be read out to an external device at any time, and which is programmable and can be installed in an unmanned remote location. is to provide.

In order to achieve the above object, the present invention includes a selector that selects a plurality of sensors that detect temperature, etc. by a switching operation, and a signal that converts the electrical displacement of the selected sensor into an electrical signal via this selector. a converter, an amplifier that amplifies the output signal of the signal converter, an A/D converter that converts the signal obtained through the amplifier into a digital signal, and sequentially sends data consisting of the digital signal to a predetermined address. The semiconductor storage device that holds the memory, the switching operation of the selector, and the storage control of data from the A/D converter to the semiconductor storage device are controlled to be performed at predetermined control timings, and this control timing is controlled by external operation. a controller that can be adjusted to any time interval; an oscillator that is connected to the controller to set operation timing; and a controller that reads the data stored and held in the semiconductor storage device based on control commands from externally connected equipment. A data buffer for connecting to external equipment and a driving power source are housed in a weatherproof casing, and a data buffer for connecting to external equipment and a driving power source are housed in a weatherproof casing, and a sensor that can come into contact with outside air is housed and detachably protrudes from a part of the casing. A sensor housing section, a plurality of operation push button switches for adjusting the ON-OFF operation of the controller and control timing settings, a connector for connection with external connected equipment, and a power supply on one side of the casing. It is characterized by being equipped with a switch.

Next, an embodiment of the temperature storage/recording device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block circuit diagram showing one embodiment of the device of the present invention. In FIG. 1, reference numeral 10
is a selector, 12 is a signal converter, 14 is an amplifier,
Reference numerals 16 denote A/D converters, and the input terminals of the selector 10 are connected to, for example, a temperature sensor 18A and a humidity sensor 18B. In addition, the A/D
A semiconductor memory device 20 such as a RAM is connected to the converter 16 via a bus line. Furthermore, a controller 22 is provided for performing switching operations of the selector 10 and controlling storage of data from the A/D converter 16 to the semiconductor storage device 20. Note that an oscillator 24 is connected to this controller 22, and configured to set the operation timing of each of the control elements. Further, a data buffer 26 is connected to the semiconductor storage device 20 via a bus line, and by connecting this data buffer 26 to an external device 28 as appropriate, data is stored in the semiconductor storage device 20 based on a control command from the external device 28. The system is configured so that the data stored therein can be read out and displayed on a printer or display device as appropriate. Further, in this embodiment, although a circuit connection configuration is not shown, a power source 30 consisting of a dry battery or the like is provided for operating each of the control elements.

Next, the operation of the temperature and humidity storage/recording device having such a configuration will be explained.

First, the controller 22 is provided with a connection line to an external device 28, for example, the controller 22 is provided with a connection line to an external device 28.
The second control timing can be set externally. When the control timing of the controller 22 is set in this way, the selector 10 is switched based on this timing, and the temperature sensor 18A and the humidity sensor 18B are alternately connected to the signal converter 12. The signal converter 12 converts the electrical displacement (resistance change, capacitance change, etc.) of each sensor into an electrical signal (voltage or current) and inputs it to the A/D converter 16 via the amplifier 14. Therefore,
In the A/D converter 16, each of the sensors 18A, 1
8B, the analog signal obtained by the signal converter 12 is converted into a digital signal of a predetermined number of bits, and this digital signal is converted into a digital signal of the semiconductor storage device 20 based on a predetermined control timing set by the controller 22. It is stored and held sequentially at a predetermined address.

In this case, the signals detected by each sensor are converted into an A/D
The control timing by the controller 22 for A/D conversion by the converter 16 and storage and storage in the semiconductor storage device 20 is, for example, every 1, 5, 15 or 30 seconds, every 1, 5, 15 or 30 minutes, or every 1 or 2 hours. These control timings can be set arbitrarily by external operation. As a result, data regarding temperature and humidity are alternately stored and held in the semiconductor storage device 20 at predetermined control timings. Therefore, the device of this embodiment can be used for one day, one week, or one day.
Automatic memory recording of temperature, etc. can be performed automatically for several months or months.

In this way, when a certain amount of automatic storage and recording is completed, a printer with a computer function, a display device, a cassette type magnetic tape unit, etc., as an external device 28 is connected to the data buffer 26 connected to the semiconductor storage device 20. death,
Data stored and held in the semiconductor storage device 20 can be sequentially read out and analyzed at once.

As is clear from the above, the device of the present invention can be installed in an uninhabited or harsh environment to programmably store and record the surrounding atmosphere over a long period of time, and then the device can be recovered. Analysis processing of stored data can be easily achieved. Therefore, the device of the present invention having the above-described circuit configuration, for example, as shown in FIG.
It is housed in a weather-resistant casing 32, and a part of the casing 32 is provided with a removably protruding sensor storage part 34 that can be contacted with outside air, and furthermore, on one side of the casing 32, settings for ON-OFF operation and control timing of the controller 22 are provided. A configuration may be provided in which an operating push button switch 36 for adjusting the controller 22, a connector 38 for connection with external equipment, and a power switch 40 are provided, respectively.

In the above-mentioned embodiment, a case has been described in which a temperature sensor and a humidity sensor are provided to alternately store and record temperature and humidity, but sensors capable of detecting other environmental conditions, such as a pressure sensor, It is also possible to add a vibration sensor or the like, or to use only a single sensor. In this case, each sensor may be a variety of known sensors each configured to respond to the detection target as an electrical displacement. For example, it is preferable to use a thermistor or a platinum resistor as the temperature sensor.

In addition, the device of the present invention can programmably automatically store and record data obtained by multiple sensors for a long time or for a long period of time using a single device, and is also movable, so it can be used in a large number of devices. The various data stored and recorded in each device can be collected at a desired point in time, and the data can be analyzed in a concentrated manner. Monitoring of environmental conditions, etc. in a manufacturing plant can be accomplished economically and effectively.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.
Of course, various circuit changes can be made, and various other improvements and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing an embodiment of the temperature storage/recording device according to the present invention, and FIG. 2 is a perspective view showing an embodiment of the assembled state of the device of the present invention. 10...Selector, 12...Signal converter, 14
... Amplifier, 16 ... A/D converter, 18 ... Sensor, 20 ... Semiconductor storage device, 22 ... Controller, 24 ... Oscillator, 26 ... Data buffer, 28 ... External device, 30 ... Power supply , 32...
Casing, 34...Sensor housing section, 36...Push button switch for operation, 38...Connector, 40
...Power switch.

Claims (1)

[Claims for Utility Model Registration] A selector that selects a plurality of sensors that detect temperature, etc. by a switching operation, a signal converter that converts the electrical displacement of the sensor selected via this selector into an electrical signal, and this An amplifier that amplifies the output signal of the signal converter, an A/D converter that converts the signal obtained through the amplifier into a digital signal, and a semiconductor memory that sequentially stores and holds data consisting of the digital signal at predetermined addresses. The device is controlled so that the switching operation of the selector and the storage control of data from the A/D converter to the semiconductor storage device are performed at predetermined control timings, and the control timing is set at arbitrary time intervals by external operation. an adjustable controller; an oscillator connected to the controller to set operating timing;
A data buffer for connection to an external device and a driving power source are housed in a weatherproof casing so that the data stored and held in the semiconductor storage device can be read out based on a control command from an externally connected device; A sensor storage part that accommodates a plurality of sensors and can be contacted with the outside air and is removably protruded from a part of the casing, and one side of the casing is provided with an ON-OFF operation of the controller and adjustment of control timing settings. 1. A storage and recording device for temperature, etc., characterized in that it is provided with a plurality of push button switches for operation, a connector for connection with external connection equipment, and a power switch.