JPH0721422B2 - Measurement recorder - Google Patents

Description

The present invention relates to a measurement recording device.

(Prior Art) A measurement recording device is generally composed of a sensor, a recording device, a power supply, and the like, and these are individual, and there is a portable device in which a power supply is built in the main body, but in any case, the shape is It is usually large and heavy. A recording paper is used as a means for recording the measurement result.

(Problems to be Solved by the Invention) However, since the conventional measurement recording device has a large shape, it is difficult to measure a narrow space. Especially, in a narrow place where the main body does not enter, a connection cable between the sensor and the recording device is provided. Becomes longer, and as a result, induction is likely to occur in the cable,
S / N ratio deteriorates. Also, the object to be measured is a moving body,
In addition, if the measurement recording device cannot be attached to the moving body in space, the measurement may be impossible. Furthermore, since recording paper is used as the recording medium, it is easily damaged and inconvenient to handle, and the recording time is short, and it is difficult to measure and record for a long time.

The present invention has been made to solve the above problems,
An object of the present invention is to provide a measurement recording device that can be attached to most of the object to be measured, records the measurement result, and can take out the record arbitrarily.

(Means for Solving the Problems) In order to achieve the above object, according to the present invention, the measuring device for taking in information and the recording device are separated, and the function of writing the data on the recording paper is separated. The recording device itself is a small and thin card-shaped case, and an input terminal for connecting the measuring device and information input from the measuring device are recorded in time series according to a preset program and the information is recorded. A recording means capable of appropriately taking out data to the outside, a battery for supplying a required electric power to the measuring device and the recording means, and a reading terminal to which an external recording and reading device for taking out data from the recording means can be connected. It has a structure that is integrated.

(Operation) The measuring device and the recording device are attached to the object to be measured, and the detected information is recorded in time series by the recording means. The recorded data is appropriately taken out by an external recording / reading device which is detached from the object to be measured and connected via a reading terminal.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an external appearance of a recording apparatus to which the present invention is applied. A case 2 of the recording apparatus 1 is a small and thin rectangular card formed of a synthetic resin member, for example, plastic.
The recording means 3 and the battery 4 for the power source, which are configured as described above, are integrally built in, and an input terminal 6 to which the measuring device 8 is connected to the end face 2a.
However, the end surface 2b is provided with a reading terminal 7 to which an external recording and reading device can be connected. As shown in FIGS. 1 and 2, the recording means 3 includes an analog-digital converter (hereinafter referred to as A / D converter) 10, a central processing unit (hereinafter referred to as CPU) 11,
Decoder 12, clock 13, read-only memory (hereinafter referred to as ROM) 1
4 and recording medium such as writable and readable memory (hereinafter referred to as RAM
It is composed of 15 etc.

The measuring device 8 is, for example, a temperature measuring device and is provided with a thermistor 5 as shown in FIG. 2. The thermistor 5 is connected in series to the resistor R1 and cooperates with the resistors R1 to R3 to form a bridge circuit.
Connection point a between resistor R2 and R3 of this bridge circuit and resistor R1
And a thermistor 5 are connected to the inverting and non-inverting input terminals of the operational amplifier 9 via resistors R5 and R6, respectively. The amplification level of the differential amplifier 9 is adjusted by the volume VR.

The output terminal of the differential amplifier 9, that is, the output terminal of the measuring device 8 is connected to the A / D converter 10 through the input terminal 6 of the recording device,
The output terminal of the A / D converter 10 is connected to the CPU 11,
ROM14 and RAM15 are connected to the bus via a bus. Decoder 1
2 is connected to A / D converter 10, CPU11, ROM14, RAM15, clock 13
Is connected to the A / D converter 10 and the CPU 11. Also, output terminal 7
One terminal is connected to the CPU 11 and the other terminal 7b is connected to the bus.

The battery 4 is a small and thin battery, for example, a lithium battery is used, and supplies required power to the recording unit 3 and the sensor 5. The recording device 1 is configured to start operating when the battery 4 is attached. The recording device 1 is, for example, attached and fixed to an object to be measured.

The operation will be described below.

The resistance value of the sensor 5 of the measuring device 8 changes according to the temperature of the object to be measured, and the voltage at the connection point b of the bridge circuit changes accordingly. The differential amplifier 9 amplifies the potential difference between the connection points a and b of the bridge circuit and outputs it as an analog signal. On the other hand, the CPU 11 of the recording device 1 starts when a clock signal is input from the clock 13 which indicates the time for recording information (data), operates the decoder 12, and causes the ROM 14 to output predetermined program data to the bus. The CPU 11 takes in the program data output to this bus, and issues a command requesting the data of the A / D converter 10 to the decoder 12 according to the program.

When the A / D converter 10 receives a command from the decoder 12 and a clock signal is input from the clock 13, the A / D converter 10 converts an analog signal input via the input terminal 6 into a corresponding digital signal and outputs it. The CPU 11 temporarily captures this output data and outputs the next program data from the ROM 14,
According to the program data, the decoder 12 issues a data read command to the RAM 15 to read the data output to the bus into the RAM 15. In this way, the CPU 11 automatically records data, that is, temperature information, in the RAM 15 in a time series at regular time intervals.

To take out the data recorded in the RAM 15, an external recording / reading device such as a data analyzer is connected to the reading terminal 7 and a predetermined signal is applied to the CPU 11 from one terminal 7a. When this signal is applied, the CPU 11 activates the decoder 12 and the ROM 14
To output the program data for outputting the data of the RAM 15, the decoder 12 instructs the read address of the RAM 15 according to the program data, and outputs the data stored in the RAM 15 to the sequential bus. The external recording / reading device stores the data output to the bus in the order capturing storage device via the terminal 7b. In this way, only the temperature information recorded in the recording device 1 is taken out.

The data recorded in the recording device 1 and the extraction to the external recording / reading device may be performed after a predetermined period has elapsed after the start of the measurement, or at any time during the measurement period.

In addition, in the present embodiment, the case where the temperature measuring device is used as the measuring device is described, but the present invention is not limited to this, and a pressure measuring device, a vibration measuring device, or the like may be used depending on the measuring object. Good.

(Effect of the Invention) As described in detail above, according to the present invention, a measuring instrument for taking in information, an input terminal for connecting the measuring instrument to a small and thin card-shaped case, and an input from the measuring instrument. From the recording means, recording means capable of time-sequentially recording information according to a preset program and taking out the recorded data to the outside as appropriate, a battery for supplying necessary power to the measuring instrument and the recording means, and the recording means Since the external recording / readout device for taking out the data is integrated with the read-out terminal which can be connected, it can be attached to a narrow space of the object to be measured, and the measured data can be recorded and stored. It is easy to retrieve recorded data. Further, since the recording device is very small, it is convenient to carry and can be easily attached to a moving body, which is suitable for measuring the moving body. Further, it has an excellent effect that it can be replaced with a measuring device suitable for the object to be measured and has excellent versatility.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of the measurement recording apparatus according to the present invention, and FIG. 2 is a block diagram showing an embodiment of the circuit of the measurement recording apparatus of FIG. 2 ... Case, 3 ... Recording means, 4 ... Battery, 5 ... Thermistor, 6 ... Input terminal, 7 ... Read terminal, 8 ... Measuring instrument.

Claims (1)

[Claims] 1. A measuring instrument for taking in information, an input terminal for connecting the measuring instrument to a small and thin card-like case, and information inputted from the sensor is recorded in time series according to a preset program. In addition, a recording means capable of appropriately taking out the recorded data to the outside, a battery supplying a required electric power to the measuring device and the recording means, and an external recording / reading device for taking out the data from the recording means can be connected. A measurement recording apparatus, comprising: a recording apparatus having a read-out terminal integrally incorporated therein.