Patents by Inventor Shigeaki Takase
Shigeaki Takase has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9470723Abstract: As a configuration for detecting an occurrence of abnormalities such as a disconnection of output wiring or an overcurrent of a PLC analog output module that controls a load by an analog current signal, the PLC analog output module includes a current output circuit that outputs the analog current signal, a current sensing resistor provided at a current output terminal of the current output circuit for directly detecting an analog current output to the load, a monitoring circuit that monitors voltages at both ends of the current sensing resistor, and an abnormality detection circuit that discriminates whether there is an occurrence of a disconnection or an overcurrent based on a monitoring result of the monitoring circuit.Type: GrantFiled: April 9, 2012Date of Patent: October 18, 2016Assignee: Mitsubishi Electric CorporationInventors: Masataka Watahiki, Masaru Hoshikawa, Shigeaki Takase
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Publication number: 20150077132Abstract: As a configuration for detecting an occurrence of abnormalities such as a disconnection of output wiring or an overcurrent of a PLC analog output module that controls a load by an analog current signal, the PLC analog output module includes a current output circuit that outputs the analog current signal, a current sensing resistor provided at a current output terminal of the current output circuit for directly detecting an analog current output to the load, a monitoring circuit that monitors voltages at both ends of the current sensing resistor, and an abnormality detection circuit that discriminates whether there is an occurrence of a disconnection or an overcurrent based on a monitoring result of the monitoring circuit.Type: ApplicationFiled: April 9, 2012Publication date: March 19, 2015Applicant: Mitsubishi Electric CorporationInventors: Masataka Watahiki, Masaru Hoshikawa, Shigeaki Takase
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Patent number: 8564466Abstract: To increase the number of analog inputs at low cost, an analog input system includes: one or more analog slave units each connected to a bus to which a CPU unit is connected, and each including an A/D-conversion device converting an analog value outputted by an external device into a first digital value, a buffer memory buffering a second digital value to be transferred to the CPU unit, and a nonvolatile storage device containing specific information of its own unit; and an analog master unit connected to the bus and including an operation section performing operation processing based on the specific information stored in the storage device with the first digital value being used as an input, to calculate the second digital value, the master unit performing on each of the slave input units the operation processing and processing of transferring the calculated second digital value to the buffer memory.Type: GrantFiled: August 1, 2011Date of Patent: October 22, 2013Assignee: Mitsubishi Electric CorporationInventors: Masaru Hoshikawa, Shigeaki Takase
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Patent number: 8543744Abstract: An A/D converter that is attached to a programmable controller (PLC) and sequentially converts an analog value inputted from outside into a digital value. The A/D converter includes: a shared memory that can read-access from a CPU unit that controls the entire PLC and includes a log storage area with a ring buffer configuration for sequentially logging the digital value and a parameter storage area for storing a head pointer serving as a parameter indicating a position where a next log data is stored; and a logging executing unit that writes a digital value in an address indicated by the head pointer in the log storage area as log data and updates the head pointer.Type: GrantFiled: March 23, 2009Date of Patent: September 24, 2013Assignee: Mitsubishi Electric CorporationInventors: Atsuko Onishi, Yoshiyuki Kubota, Satoru Ukena, Shigeaki Takase
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Publication number: 20130033390Abstract: To increase the number of analog inputs at low cost, an analog input system includes: one or more analog slave units each connected to a bus to which a CPU unit is connected, and each including an A/D-conversion device converting an analog value outputted by an external device into a first digital value, a buffer memory buffering a second digital value to be transferred to the CPU unit, and a nonvolatile storage device containing specific information of its own unit; and an analog master unit connected to the bus and including an operation section performing operation processing based on the specific information stored in the storage device with the first digital value being used as an input, to calculate the second digital value, the master unit performing on each of the slave input units the operation processing and processing of transferring the calculated second digital value to the buffer memory.Type: ApplicationFiled: August 1, 2011Publication date: February 7, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masaru Hoshikawa, Shigeaki Takase
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Publication number: 20110307635Abstract: An A/D converter that is attached to a programmable controller (PLC) and sequentially converts an analog value inputted from outside into a digital value. The A/D converter includes: a shared memory that can read-access from a CPU unit that controls the entire PLC and includes a log storage area with a ring buffer configuration for sequentially logging the digital value and a parameter storage area for storing a head pointer serving as a parameter indicating a position where a next log data is stored; and a logging executing unit that writes a digital value in an address indicated by the head pointer in the log storage area as log data and updates the head pointer.Type: ApplicationFiled: March 23, 2009Publication date: December 15, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Atsuko Onishi, Yoshiyuki Kubota, Satoru Ukena, Shigeaki Takase
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Patent number: 6911924Abstract: An analog unit system according to this invention comprises a first analog unit having first storage means for storing a first factory setting value and a first user setting value, second storage means for reading the first factory setting value and the first user setting value out of the first storage means and storing the setting values, operation means for calculating a second user setting value based on the first factory setting value and the first user setting value read out of the second storage means, and a second analog unit having third storage means for storing the second user setting value calculated by this operation means and thereby, adjustment and calibration of the user setting value can automatically be performed by simple manipulation with respect to the analog unit in which the user setting value is not set.Type: GrantFiled: January 31, 2002Date of Patent: June 28, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Haruyuki Kurachi, Shigeaki Takase, Tatsuya Akahori, Hiroshi Kobayashi
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Publication number: 20040150455Abstract: An analog unit system according to this invention comprises a first analog unit having first storage means for storing a first factory setting value and a first user setting value, second storage means for reading the first factory setting value and the first user setting value out of the first storage means and storing the setting values, operation means for calculating a second user setting value based on the first factory setting value and the first user setting value read out of the second storage means, and a second analog unit having third storage means for storing the second user setting value calculated by this operation means and thereby, adjustment and calibration of the user setting value can automatically be performed by simple manipulation with respect to the analog unit in which the user setting value is not set.Type: ApplicationFiled: October 23, 2003Publication date: August 5, 2004Inventors: Haruyuki Kurachi, Shigeaki Takase, Tatsuya Akahori, Hiroshi Kobayashi
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Patent number: 5027044Abstract: A load state decision apparatus of a servomotor where a load current value of a servomotor during operation is sampled and compared with a prescribed value and then the load state is decided based on the result, a motor current value is detected by adding the function to the existing apparatus and the detected motor current value is sampled at prescribed time intervals and stored in a memory, and an effective current value is calculated from the current value data and the calculated effective current value is compared with the rated current value and the load state of the servomotor is decided, thereby a converting or detecting apparatus need not be installed externally but the load state can be decided automatically.Type: GrantFiled: April 4, 1990Date of Patent: June 25, 1991Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Makoto Nishimura, Shigeaki Takase