Control system for construction machines and method for operating the control system
First Claim
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1. A control system for a construction machine, comprising:
- at least one sensor and at least one controller, wherein a serial connection exists between said at least one sensor and said at least one controller;
wherein said at least one sensor and said at least one controller are of the two-channel or multi-channel type;
each of said at least one sensor comprises at least two measured value pick-ups mounted in a specimen feed to be spaced apart from each other with a substantial identical distance from an entry of the specimen feed and at least two processing units which are arranged redundantly with respect to each other; and
said at least two processing units of the sensor are coupled with each other and a data connection exists between the processing units.
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Abstract
A control system for a construction machine includes at least one sensor and at least one controller, wherein a serial connection exists between the sensor and the controller, and wherein at least one sensor and/or controller are of the two-channel or multi-channel type. Furthermore, this invention relates to a method for operating such control system for a construction machine.
8 Citations
22 Claims
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1. A control system for a construction machine, comprising:
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at least one sensor and at least one controller, wherein a serial connection exists between said at least one sensor and said at least one controller; wherein said at least one sensor and said at least one controller are of the two-channel or multi-channel type; each of said at least one sensor comprises at least two measured value pick-ups mounted in a specimen feed to be spaced apart from each other with a substantial identical distance from an entry of the specimen feed and at least two processing units which are arranged redundantly with respect to each other; and said at least two processing units of the sensor are coupled with each other and a data connection exists between the processing units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A control system for a construction machine, comprising:
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at least one sensor comprising; a sensor housing having a specimen feed to receive a medium to be detected; a first measured value pick-up housed in the sensor housing, the first measured value pick-up measuring a variable to obtain a first measured value; a second measured value pick-up housed in the sensor housing, the second measured value pick-up measuring a variable to transmit a second measured value, the first and second measured value pick-ups mounted in the specimen feed to be spaced apart from each other with a substantial identical distance from an entry of the specimen feed; a first processing unit having a first input receiving the first measured value from the first measured value pick-up and a first output; and a second processing unit having a second input receiving the second measured value from the second measured value pick-up and a second output, the first and second processing units coupled to each other via a signal connection to communicate the first and second measured value pick-ups; wherein at least one of the first processing unit and the second processing unit has a comparing unit to compare the first measured value with the second measured value, the first processing unit and the second processing unit store one of the first and second measured value in the first output and the second output when a deviation of the compared first and second measured values is within a preset tolerance limit, and mark one of the first and second measured value as faulty and store the marked value from the first or second output when a deviation of the compared first and second measured values is not within the preset tolerance limit; and at least one controller serially connected to said at least one sensor, said at least one controller comprising; a first control unit receiving data from the first and second outputs of the first and second processing units and verifying the data, the first control unit forwarding the data to a second control unit; and the second control unit receiving the data from the first control unit to verify the data. - View Dependent Claims (15, 16, 17, 18)
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19. A control system for a construction machine, comprising:
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at least one sensor comprising; a sensor housing having a specimen feed to receive a medium to be detected; a first measured value pick-up housed in the sensor housing, the first measured value pick-up measuring a variable to obtain a first measured value; a second measured value pick-up housed in the sensor housing, the second measured value pick-up measuring a variable to obtain a second measured value, the first and second measured value pick-ups mounted in the specimen feed to be spaced apart from each other with a substantial identical distance from an entry of the specimen feed; a first processing unit having a first input receiving the first measured value from the first measured value pick-up and a first output; and a second processing unit having a second input receiving the second measured value from the second measured value pick-up and a second output, the first and second processing units coupled to each other via a signal connection to communicate the first and second measured value pick-ups; wherein at least one of the first processing unit and the second processing unit has a comparing unit to compare the first measured value with the second measured value, the first processing unit and the second processing unit store one of the first and second measured value in the first output and the second output when a deviation of the compared first and second measured values is within a preset tolerance limit, and mark one of the first and second measured value as faulty and store and output the marked value from the first or second output when a deviation of the compared first and second measured values is not within the preset tolerance limit; and at least one controller serially connected to said at least one sensor, said at least one controller comprising; a first control unit receiving data from the first and second outputs of the first and second processing units and verifying the data, the first control unit forwarding the data to a second control unit; and the second control unit receiving the data to verify the data; wherein said at least one controller requests cyclically a sensor status and the sensor transmits its sensor status description in a data packet to the inquiring controller, and the sensor status description is determined internally in each processing unit of the sensor; and said at least one controller checks the data packet or the measured value for correctness by the safety or protection function.
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20. A control system for a construction machine, comprising:
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at least one sensor and at least one controller, wherein a serial connection exists between said at least one sensor and said at least one controller; wherein said at least one sensor and said at least one controller are of the two-channel or multi-channel type; each of said at least one sensor comprises at least two measured value pick-ups mounted in a specimen feed to be spaced apart from each other with a substantial identical distance from an entry of the specimen feed and at least two processing units which are arranged diversely with respect to each other; and said at least two processing units of the sensor are coupled with each other and a data connection exists between the processing units. - View Dependent Claims (21, 22)
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Specification