JP2535600Y2 - Temperature recording device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature recording device used for recording the temperature inside a refrigerator such as a refrigeration device for a marine container.

[0002]

2. Description of the Related Art FIG. 2 shows an example of a temperature recording device provided in a conventional marine container refrigeration system and the like. The conventional temperature recording device shown in FIG. 2 amplifies the signal of the temperature sensor 10,
An amplifier 1 for outputting to a servo amplifier 2 via a switch 3;
The deviation output from the servo amplifier 2 is supplied and the recording pen 6
And a signal connected to the servo motor 4 and indicating the position of the recording pen 6 is transmitted to the servo amplifier 2.
And a potentiometer 5 that feeds back the signal via the correction means 8.

[0003] A signal from the temperature sensor 10 that detects the temperature in the refrigerator is amplified by the amplifier 1 and sent to the servo amplifier 2 via the switch 3. Then, the servo amplifier 2 inputs the signal from the amplifier 1 and the feedback signal from the potentiometer 5 indicating the position of the recording pen 6, outputs a deviation signal, and drives the servo motor 4. When the recording pen 6 is driven by the servo motor 4 and moves to the position indicated by the deviation signal of the servo amplifier 2, the servo amplifier 2
Is zero. Accordingly, the recording pen 6 stops at the position indicated by the signal of the servo amplifier 2, and this recording pen 6
The temperature is recorded on the recording paper.

[0004] By the way, a deviation may occur between the temperature indicated on the recording paper by the recording pen 6 and the actual temperature due to a difference in the type of recording paper or a shift of a transmission mechanism for driving the recording pen 6. In this case, the switching unit 3 is switched, and instead of the signal from the temperature sensor 10, several reference temperatures 1
For example, when a signal corresponding to −20 ° C. is output from the output unit 7 to the servo amplifier 2, recording is performed based on the signal from the output unit 7 and the deviation signal of the servo amplifier 2 to which the feedback signal from the potentiometer 5 is input. The pen 6 moves.

Next, when the knob 9 is rotated in accordance with the deviation between the indicated temperature of the recording pen 6 and the reference temperature, the correction means 8 corrects the feedback signal in accordance with the amount of operation of the knob 9. As a result, the movement of the recording pen 6 performed based on the deviation signal of the servo amplifier 2 is also corrected, and the indicated temperature of the recording pen 6 is adjusted to match the actual temperature.

[0006]

In the conventional temperature recording apparatus, when there is a deviation between the actual temperature and the indicated temperature, the knob is rotated by a driver or the like to correct the feedback signal, and the recording pen 6 is rotated. It was not always easy to adjust the degree of rotation of the knob depending on the feeling of the hand, and it was also said that the knob groove was crushed or the knob was rotated excessively to damage the knob There were challenges.

The present invention is to solve the above-mentioned problem.

[0008]

The temperature recording device according to the present invention comprises output means for outputting a signal corresponding to a reference temperature to a servo amplifier, and correction means for correcting a feedback signal input to the servo amplifier. In a temperature recording apparatus provided with adjusting a designated temperature of a recording pen via the correction means, an operation key and a correction output means for outputting a constant temperature correction value signal each time the operation key is operated once And correcting the correction means based on the temperature correction value signal of the correction output means.

[0009]

In the above, a signal corresponding to an arbitrary reference temperature is output from the output means to the servo amplifier. If a deviation occurs between the temperature indicated by the recording pen on the recording paper and the reference temperature, the following is performed. Thus, the indicated temperature of the recording pen is adjusted.

That is, when the operation key is operated once, the correction output means outputs a constant temperature correction value signal to the correction means.
The correction means corrects the feedback signal based on the temperature correction value signal. Then, the position of the recording pen moves based on the deviation signal of the servo amplifier to which the signal from the output means and the feedback signal are input, and the indicated temperature rises or falls in a certain temperature range.

Therefore, the correction value of the feedback signal is corrected by operating the operation key an appropriate number of times, so that the indicated temperature of the recording pen can be adjusted so as to match the reference temperature, and even when the measured temperature is indicated. Since the feedback signal is corrected by the correction value, a correct instruction is given.

As described above, the indicated temperature of the recording pen can be easily adjusted to match the actual temperature, and problems such as damage to the knob in the conventional apparatus can be solved.

[0013]

FIG. 1 shows an embodiment of the present invention. In this embodiment shown in FIG. 1, a detection signal is input to an amplifier 1 from a temperature sensor 10 for detecting a temperature in a refrigerator, and the amplifier 1 and an output means 7
Are connected to the servo amplifier 2 by the switch 3, and the servo amplifier 2 receives the signal output from the amplifier 1 or the signal corresponding to the reference temperature output from the output means 7 and is coupled to the servo motor 4. In the temperature recording device for controlling the servo motor 4 by inputting the output signal of the potentiometer 5 through the correction means 8, the operation key 11 which is connected to the correction means 8 by an electric wire and comprises an up key 11a and a down key 11b is displayed. And a correction output unit 12 to which the output unit 13 is connected.

In the above description, the operation key 11 is operated by pressing or touching the up key 11a or the down key 11b, and the correction output means 12 receives a signal from the operation key 11 and outputs a temperature correction value. Determine the signal. That is, each time the up key 11a is operated once, a temperature correction value signal corresponding to shifting the indicated temperature of the recording pen 6 by a predetermined temperature (for example, 0.1 ° C.) is raised, and the down key 11b is operated once. Each time, a temperature correction value signal corresponding to lowering the indicated temperature of the recording pen 6 by a fixed temperature (for example, 0.1 ° C.) is determined. The temperature correction value signal determined by the correction output means 12 is output to the correction means 8, where the feedback signal is corrected according to the temperature correction value signal.

The operation keys 11 can use keys of a controller provided in the refrigerator. Also,
A constant temperature corresponding to the temperature correction value signal determined by the correction output means 12 may be integrated and the result may be displayed on the display 13.

The adjustment of the indicated temperature of the recording pen 6 is performed as follows. By switching the switch 3, a signal corresponding to an arbitrary reference temperature (for example, −20 ° C.) is output from the output unit 7 to the servo amplifier 2. The servo amplifier 2 receiving the signal from the output means 7 and the feedback signal from the potentiometer 5 outputs a deviation signal, and the temperature indicated on the recording paper of the recording pen 6 moved based on the deviation signal is lower than the reference temperature. If lower, up key 11
Operate a.

The signal of the up key 11a is input to the correction means 8 via the correction output means 12, and the feedback signal is corrected. Then, the recording pen 6 moves based on the deviation signal of the servo amplifier 2, and the indicated temperature rises in a certain temperature range. The operation of the up key 11a is repeated an appropriate number of times until the indicated temperature of the recording pen 6 matches the reference temperature (ie, -20 ° C.) indicated on the scale of the recording paper.

On the other hand, if the indicated temperature of the recording pen 6 is higher than the reference temperature, the down key 11b is operated, and the operation is performed in the same manner as the up key 11a until the temperature coincides with the reference temperature. Also, another reference temperature, for example, 0 ° C.,
The temperature of 20 ° C. and the like is adjusted according to the same procedure as above.

In this manner, the correction value of the feedback signal from the potentiometer 5 is corrected every time the operation key 11 is operated, and the recording pen 6 is moved in a constant temperature range. Can be easily adjusted to coincide with the measured temperature shown in FIG.

The other operation is the same as that of the conventional one shown in FIG.

As described above, it is possible to easily adjust the indicated temperature of the recording pen so as to coincide with the actual temperature, and the problems such as damage to the knob in the conventional apparatus have been solved.

[0022]

According to the temperature recording device of the present invention, the correction output means outputs a temperature correction value signal to the correction means every time the operation key is operated, and the correction means corrects the feedback signal based on the signal. Since the recording pen is moved within a certain temperature range, the indicated temperature of the recording pen can be easily adjusted to match the actual temperature, and problems such as damage to knobs in the conventional device are required. Is eliminated.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a temperature recording device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a conventional temperature recording device.

[Explanation of symbols]

 2 Servo amplifier 6 Recording pen 7 Output means 8 Correction means 11 Operation keys 11a Up key 11b Down key 12 Correction output means

Claims (1)

(57) [Scope of request for utility model registration] An output unit for outputting a signal corresponding to a reference temperature to a servo amplifier; and a correction unit for correcting a feedback signal input to the servo amplifier. A temperature recording device for adjusting an indicated temperature, comprising: an operation key; and a correction output unit for outputting a constant temperature correction value signal each time the operation key is operated once. A temperature recording apparatus, wherein the correction means is corrected based on a signal.