JP2007218708A - Temperature detector for heat-treatment roller - Google Patents

Temperature detector for heat-treatment roller Download PDF

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JP2007218708A
JP2007218708A JP2006038786A JP2006038786A JP2007218708A JP 2007218708 A JP2007218708 A JP 2007218708A JP 2006038786 A JP2006038786 A JP 2006038786A JP 2006038786 A JP2006038786 A JP 2006038786A JP 2007218708 A JP2007218708 A JP 2007218708A
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temperature
roller
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JP5008313B2 (en
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Motomasa Hirao
基正 平尾
Yasuhiro Fujimoto
泰広 藤本
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Tokuden Co Ltd Kyoto
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature detector, capable of keeping fluctuation in the surface temperature of a heat-treatment roller to be within ±0.1°C. <P>SOLUTION: A temperature detector 1 for detecting the surface temperature of the roller, a signal conversion circuit 2 for amplifying and converting the detection of the temperature detector 1, an analog/digital converter 3 for converting the analog output signal of the signal conversion circuit 2 into a digital signal, a microcomputer 4 for correcting and modulating the distortion of the detected characteristics of the temperature detector 1, a transmission circuit 5, and a transmission antenna 6 are arranged at a rotating side A of the roller. A receiving antenna 7 and a receiving circuit 8, a microcomputer 9 for reading a transmitted digital signal, and a digital/analog converter 10 for converting a read digital signal into an analog signal for sending to a temperature control unit are arranged at a fixed side B, and thus a high-accuracy temperature detection signal is obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ローラの表面を所定の温度に維持するために用いる熱処理ローラの表面温度を検出するローラ用温度検出装置に関するものである。   The present invention relates to a roller temperature detecting device for detecting the surface temperature of a heat treatment roller used for maintaining the surface of a roller at a predetermined temperature.

誘導加熱コイルあるいは熱媒体の通流でローラを所定の温度に加熱または冷却し、ローラに当接して通過する処理物を熱処理するローラ装置は周知である。このようなローラ装置では、ローラに熱電対などの温度検知器を設け、その温度検知器の検知信号を回転変圧器で固定側に導出して温度制御装置に入力し、予め設定した所定の温度と比較し、その偏差で誘導コイルに流す電流または熱媒体の温度を制御し、この制御によりローラの表面温度を所定の温度に維持することが行われている。
特開２００３−１７８８６２号公報 特開２００４−１９５８８８号公報 2. Description of the Related Art A roller device that heats or cools a roller to a predetermined temperature by an induction heating coil or a flow of a heat medium and heat-treats a processed material that abuts the roller and passes through the roller device is well known. In such a roller device, the roller is provided with a temperature detector such as a thermocouple, and the detection signal of the temperature detector is derived to the fixed side by a rotary transformer and input to the temperature control device, and a predetermined temperature set in advance. Compared to the above, the deviation controls the current flowing through the induction coil or the temperature of the heat medium, and this control maintains the surface temperature of the roller at a predetermined temperature.
JP 2003-178862 A JP 2004-195888 A

ところで、以上のようなローラ装置でローラの表面温度の変動を±０．１℃以内に収めたいとの要求がある。しかし、温度検知器の検知信号を、回転変圧器を介して固定側の温度制御装置へ伝達する温度検出装置では、検知精度の高い温度検知器を用いても、回転変圧器の伝達精度などに左右されローラの表面温度の変動を±０．１℃以内に収めることができないという問題があった。   By the way, there is a demand for keeping the fluctuation of the roller surface temperature within ± 0.1 ° C. with the above roller device. However, in the temperature detection device that transmits the detection signal of the temperature detector to the fixed-side temperature control device via the rotary transformer, even if a temperature detector with high detection accuracy is used, the transmission accuracy of the rotary transformer is improved. There is a problem that the fluctuation of the surface temperature of the roller cannot be kept within ± 0.1 ° C.

本発明が解決しようとする課題は、ローラの表面温度の変動を±0.１℃以内とすることのできる温度検出装置を提供し、斯かる問題を解消する点にある。 The problem to be solved by the present invention is to provide a temperature detecting device capable of keeping the fluctuation of the roller surface temperature within ± 0.1 ° C., and to solve such a problem.

本発明は、回転するローラの回転側に設置された温度検知器の検知信号を、前記ローラ外の固定側に設置された前記ローラの表面温度を制御する温度制御装置に伝送してなるローラ用温度検出装置において、前記ローラの回転側に前記温度検知器の温度検知信号を増幅変換する変換回路と変換されたアナログ信号をデジタル信号に変換するアナログ・デジタル変換器と、前記デジタル信号に変換後の信号を前記温度検知器の特性による誤差を修正して変調するマイクロコンピュータと、前記マイクロコンピュータによる変調後のデジタル信号を送信する無線送信器とを設け、固定側に前記送信器で送信されたデジタル信号を受信する受信手段と、受信したデジタル信号を復元するマイクロコンピュータと、復元したデジタル信号をアナログ信号に変換するデジタル・アナログ変換器とを設け、アナログ信号に変換した信号を前記温度検知器の温度検知信号として前記温度制御装置に入力してなることを主な特徴とする。   The present invention relates to a roller for transmitting a detection signal of a temperature detector installed on a rotating side of a rotating roller to a temperature control device for controlling a surface temperature of the roller installed on a fixed side outside the roller. In the temperature detection device, a conversion circuit that amplifies and converts the temperature detection signal of the temperature detector on the rotation side of the roller, an analog / digital converter that converts the converted analog signal into a digital signal, and after conversion to the digital signal And a wireless transmitter that transmits a digital signal modulated by the microcomputer, and is transmitted to the fixed side by the transmitter. A receiving means for receiving a digital signal, a microcomputer for restoring the received digital signal, and an analog signal for the restored digital signal. It is converted to provide a digital-to-analog converter, and characterized mainly by comprising input to the temperature control device a signal converted into an analog signal as a temperature detection signal of the temperature detector.

本発明では、ローラの回転側で温度検知器の検知信号をデジタル信号に変換し、デジタル信号に変換後の信号を温度検知器の特性による誤差を修正して無線送信し、固定側で送信されたデジタル信号を受信しアナログ信号に変換し、そのアナログ信号を温度検知器の温度検出信号として温度制御装置に入力するので、回転側で温度検知器の検知信号を固定側に送るための回転変圧器を要さず、また、温度検知器の特性による誤差を修正した信号であることと相俟ってきわめて精度の高い温度検出信号を得ることができる。 In the present invention, the detection signal of the temperature detector is converted into a digital signal on the rotation side of the roller, and the signal after conversion into a digital signal is wirelessly transmitted with the error due to the characteristics of the temperature detector corrected, and transmitted on the fixed side. The digital signal is received and converted into an analog signal, and the analog signal is input to the temperature control device as the temperature detection signal of the temperature detector, so that the rotation transformer for sending the detection signal of the temperature detector to the fixed side on the rotation side A temperature detection signal with extremely high accuracy can be obtained in combination with a signal in which an error due to the characteristics of the temperature detector is corrected.

この場合、温度検知器の温度検知信号を増幅器で０〜２Ｖに変換し、変換した信号を１６ビットのアナログ・デジタル変換器で変換すると最も精度の高い温度検出信号が得られ、また、回転側の増幅器、デジタル・アナログ変換器、マイクロコンピュータおよび無線送信手段に供給する電源用の電源コイルを＋側と−側に分離すると、電源による検出信号のフラツキを防止し、温度検出の精度をより高めることができる。 In this case, the temperature detection signal of the temperature detector is converted to 0 to 2 V by an amplifier, and the converted signal is converted by a 16-bit analog / digital converter to obtain the most accurate temperature detection signal. If the power supply coil for power supply to the amplifier, digital / analog converter, microcomputer and wireless transmission means is separated on the + side and-side, detection signal fluctuation due to the power source is prevented, and temperature detection accuracy is further improved be able to.

ローラの表面温度の変動を±０．１℃以内とすることのできる温度検出装置を提供する目的を、ローラの回転側で温度検知器の検知信号をデジタル信号に変換し、デジタル信号に変換後の信号を温度検知器の特性による誤差を修正して無線送信し、固定側で送信されたデジタル信号を受信しアナログ信号に変換し、そのアナログ信号を温度検知器の温度検出信号として温度制御装置に入力することにより実現した。   For the purpose of providing a temperature detector that can change the surface temperature of the roller within ± 0.1 ° C, the detection signal of the temperature detector is converted into a digital signal on the roller rotation side, and then converted into a digital signal The temperature control device uses the temperature signal as a temperature detection signal for the temperature detector, receives the digital signal transmitted on the fixed side and converts it into an analog signal. Realized by typing in

図１は、本発明の実施例に係るローラ用温度検出装置の構成を示すブロック図で、図１において、Ａはローラの回転側、Ｂはステータなどの固定側を示し、回転側Ａには、ローラの表面温度を検知する白金（Ｐｔ）１００Ωからなる温度検知器１、信号変換回路２、アナログ・デジタル変換器３、マイクロコンピュータ４、送信回路５および送信アンテナ６が配置され、固定側には受信アンテナ７および受信回路８、マイクロコンピュータ９、デジタル・アナログ変換器１０が配置され、デジタル・アナログ変換器１０のアナログ出力は温度検知器１の検出信号として図示しない温度制御装置へ送られる。 FIG. 1 is a block diagram showing the configuration of a roller temperature detection apparatus according to an embodiment of the present invention. In FIG. The temperature detector 1 made of platinum (Pt) 100Ω for detecting the surface temperature of the roller, the signal conversion circuit 2, the analog / digital converter 3, the microcomputer 4, the transmission circuit 5 and the transmission antenna 6 are arranged on the fixed side. Includes a receiving antenna 7, a receiving circuit 8, a microcomputer 9, and a digital / analog converter 10, and an analog output of the digital / analog converter 10 is sent as a detection signal of the temperature detector 1 to a temperature control device (not shown).

本実施例では、信号変換回路２は、温度検知器１に一定電流（１ｍＡ）を流し、降下電圧を５０倍増幅し、０〜２Ｖの変化を０〜１００℃の変化に対応させて出力する。アナログ・デジタル変換器３は１００ｍＳごとに信号変換回路２の出力であるアナログ信号をサンプリングし、その出力を１６ビットに換算してデジタル信号（数値信号）に変換してマイクロコンピュータ４に送る。マイクロコンピュータ４は、温度検知器１の特性がリニア（線形）でなく約０．３℃の誤差が発生するため、入力したデジタル信号をリニアライズ（線形化）して約０．０１９℃の誤差に修正し、修正した１６ビットのデジタル信号を２．４ＧＨｚ域の電流信号にデジタル変調して送信回路５に送り、送信回路５はデジタル変調した電流信号を、アンテナ６を介して、固定側に送信する。 In this embodiment, the signal conversion circuit 2 supplies a constant current (1 mA) to the temperature detector 1, amplifies the drop voltage by 50 times, and outputs a change of 0 to 2 V corresponding to a change of 0 to 100 ° C. . The analog / digital converter 3 samples the analog signal that is the output of the signal conversion circuit 2 every 100 mS, converts the output into 16 bits, converts it into a digital signal (numerical signal), and sends it to the microcomputer 4. The microcomputer 4 has an error of about 0.019 ° C. by linearizing the input digital signal because the temperature detector 1 has an error of about 0.3 ° C. instead of being linear. The 16-bit digital signal is digitally modulated into a 2.4 GHz current signal and sent to the transmission circuit 5. The transmission circuit 5 sends the digitally modulated current signal to the fixed side via the antenna 6. Send.

回転側のアンテナ６から送信された信号を固定側のアンテナ７を介して受信回路８で受信し、受信した信号をマイクロコンピュータ９に送る。マイクロコンピュータ９は１６ビットのデジタル電流信号を読み取り、そのデジタル信号をデジタル・アナログ変換器１０に送り、デジタル・アナログ変換器１０で変換したアナログ信号を図示しない温度制御装置へ送る。 A signal transmitted from the rotation-side antenna 6 is received by the receiving circuit 8 via the fixed-side antenna 7, and the received signal is sent to the microcomputer 9. The microcomputer 9 reads a 16-bit digital current signal, sends the digital signal to the digital / analog converter 10, and sends the analog signal converted by the digital / analog converter 10 to a temperature control device (not shown).

ところで、回転側に信号変換回路２、アナログ・デジタル変換器３、マイクロコンピュータ４、送信回路５を配置するとこれらに電力を供給する通常＋１０Ｖ、０Ｖ、−１０Ｖの直流電源が必要である。本実施例では、固定側に交流２０Ｖの電圧を印加するコイル１１を配置し、回転側にコイル１１と電磁結合して交流１４Ｖの電圧を誘起する二つの独立したコイル１２−１、１２−２を配置する。そして二つの独立したコイル１２−１と１２−２の誘起電圧を夫々に整流回路１３−１、１３−２を経て、＋１０Ｖと０Ｖ、０Ｖと−１０Ｖの直流電源を作成し、この直流電源を適宜、回転側の信号変換回路２、アナログ・デジタル変換器３、マイクロコンピュータ４、送信回路５に供給する。このように電源コイルを分離すると、電源による検出信号のフラツキによる誤差の発生を防止することができる。 By the way, when the signal conversion circuit 2, the analog / digital converter 3, the microcomputer 4, and the transmission circuit 5 are arranged on the rotating side, DC power supplies of + 10V, 0V, and -10V are usually required to supply power to them. In the present embodiment, a coil 11 that applies an AC voltage of 20V is disposed on the fixed side, and two independent coils 12-1 and 12-2 that induce an AC voltage of 14V by electromagnetically coupling with the coil 11 on the rotation side. Place. Then, the induced voltages of the two independent coils 12-1 and 12-2 are respectively passed through the rectifier circuits 13-1 and 13-2 to create + 10V and 0V, 0V and -10V DC power supplies. As appropriate, the signal is supplied to the rotation-side signal conversion circuit 2, the analog / digital converter 3, the microcomputer 4, and the transmission circuit 5. By separating the power supply coils in this way, it is possible to prevent the occurrence of errors due to the fluctuation of the detection signal by the power supply.

以上のように構成したローラ用温度検出装置は、表１に示すように温度範囲０〜１００℃で最大誤差０．０１９℃ときわめて高い精度となり、ローラの表面温度を±０．１℃以内の精度に保持することができる。 As shown in Table 1, the roller temperature detecting device configured as described above has a very high accuracy with a maximum error of 0.019 ° C. within a temperature range of 0 to 100 ° C., and the roller surface temperature is within ± 0.1 ° C. The accuracy can be maintained.

Figure 2007218708
Figure 2007218708

なお、以上の説明は、ローラに一個の温度検知器を配置したものについて説明するものであるが、ローラに複数の温度検知器を設けた場合にも適用される。この場合、図２に示すように、温度検知器１aと信号変換回路２aを追加し、アナログ・デジタル変換器３以降の回路などは各温度検知器と対応させて時分割や変調周波数を変えるなどによって共通に使用すればよい。 The above explanation is for a case where one temperature detector is arranged on the roller, but it is also applicable to a case where a plurality of temperature detectors are provided on the roller. In this case, as shown in FIG. 2, a temperature detector 1a and a signal conversion circuit 2a are added, and the circuits after the analog / digital converter 3 are time-divisionally changed and the modulation frequency is changed corresponding to each temperature detector. Can be used in common.

本発明の実施例に係るローラ用温度検出装置の構成を示すブロック回路図である。It is a block circuit diagram which shows the structure of the temperature detection apparatus for rollers concerning the Example of this invention. 本発明の他の実施例に係るローラ用温度検出装置の構成を示すブロック回路図である。It is a block circuit diagram which shows the structure of the temperature detection apparatus for rollers concerning the other Example of this invention.

符号の説明Explanation of symbols

１、１a 温度検知器
２,２ａ 信号変換回路（増幅器）
３ アナログ・デジタル変換器
４ マイクロコンピュータ
５ 送信回路５
８ 受信回路
９ マイクロコンピュータ
１０ デジタル・アナログ変換器
１１ 固定側電源コイル
１２−１、１２−２ 回転側電源コイル
１３−１、１３−２ 整流回路
Ａ 回転側
Ｂ 固定側 1, 1a Temperature detector 2, 2a Signal conversion circuit (amplifier)
3 Analog / Digital Converter 4 Microcomputer 5 Transmission Circuit 5
8 Receiving Circuit 9 Microcomputer 10 Digital / Analog Converter 11 Fixed Side Power Coils 12-1 and 12-2 Rotating Side Power Coils 13-1 and 13-2 Rectifier Circuit A Rotating Side B Fixed Side

Claims (3)

回転するローラの回転側に設置された温度検知器の検知信号を、前記ローラ外の固定側に設置された前記ローラの表面温度を制御する温度制御装置に伝送してなるローラ用温度検出装置において、前記ローラの回転側に前記温度検知器の温度検知信号を増幅変換する変換回路と変換されたアナログ信号をデジタル信号に変換するアナログ・デジタル変換器と、前記デジタル信号に変換後の信号を前記温度検知器の特性による誤差を修正して変調するマイクロコンピュータと、前記マイクロコンピュータによる変調後のデジタル信号を送信する無線送信器とを設け、固定側に前記送信器で送信されたデジタル信号を受信する受信手段と、受信したデジタル信号を復元するマイクロコンピュータと、復元したデジタル信号をアナログ信号に変換するデジタル・アナログ変換器とを設け、アナログ信号に変換した信号を前記温度検知器の温度検知信号として前記温度制御装置に入力してなることを特徴とする熱処理ローラ用温度検出装置。   In a roller temperature detection device, wherein a detection signal of a temperature detector installed on the rotating side of a rotating roller is transmitted to a temperature control device that controls the surface temperature of the roller installed on the fixed side outside the roller. A conversion circuit that amplifies and converts the temperature detection signal of the temperature detector on the rotation side of the roller, an analog / digital converter that converts the converted analog signal into a digital signal, and the signal converted into the digital signal A microcomputer that corrects and modulates the error due to the characteristics of the temperature detector and a wireless transmitter that transmits a digital signal modulated by the microcomputer are provided, and the digital signal transmitted by the transmitter is received on the fixed side. Receiving means, a microcomputer for restoring the received digital signal, and converting the restored digital signal into an analog signal Provided a digital-to-analog converter, said signal converted to an analog signal the temperature detector the temperature control device heat treatment roller temperature detecting apparatus characterized by comprising input to the temperature detection signal. 固定側に一つの電源コイルを配置し、回転側に前記電源コイルと電磁結合する二つの独立した電源コイルを配置し、前記二つの独立した電源コイルの出力を回転側の変換回路、アナログ・デジタル変換器、マイクロコンピュータおよび無線送信器に印加してなることを特徴とする請求項１に記載の熱処理ローラ用温度検出装置。   One power supply coil is arranged on the fixed side, two independent power supply coils electromagnetically coupled to the power supply coil are arranged on the rotation side, and the output of the two independent power supply coils is converted into a conversion circuit on the rotation side, analog / digital The temperature detection device for heat treatment rollers according to claim 1, wherein the temperature detection device is applied to a converter, a microcomputer, and a wireless transmitter. アナログ・デジタル変換器は、１６ビット構成であることを特徴とする請求項１又は請求項２に記載の熱処理ローラ用温度検出装置。   The temperature detection device for a heat treatment roller according to claim 1 or 2, wherein the analog / digital converter has a 16-bit configuration.
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CN109520640A (en) * 2018-12-27 2019-03-26 北京航天长征飞行器研究所 Moving target surface contact thermography device, system and method under vacuum low-temperature environment
CN110675616A (en) * 2019-08-08 2020-01-10 上海芬宜实业有限公司 Method for transmitting signals of rotating part with high precision
JP2020010137A (en) * 2018-07-05 2020-01-16 株式会社エム・システム技研 Instrument system

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