Tension Monitoring Arrangement and Method
First Claim
1. In a system for installing an underground utility by retraction that is applied to a leading end of the utility to draw the utility through the ground such that the utility is subjected to a tension force during installation, a tension monitoring apparatus, comprising:
- a sensor for sensing the tension force to produce a tension signal;
an electronic section for using the tension signal;
a battery for supplying electrical power to said electronic section; and
a housing for supporting the sensor in a way that exposes the sensor to said tension force and for defining an elongated chamber between a pair of opposing, first and second ends, said housing being electrically conductive and a first one of said ends configured for receiving said tension force such that the tension force is transferred through the housing to the second one of said ends for then transferring the tension force to said utility, and said electronic section being positionable in said chamber with said battery such that said housing serves as at least a portion of an electrical circuit for supplying said electrical power to the electronic section from the battery.
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Accused Products
Abstract
Tension monitoring is described using a sensor which may exhibit an offset for which compensation may be provided to produce a zero voltage amplified output or to increase dynamic range. An arrangement determines whether a power reset is responsive to a battery bounce such that an initially-measured system start-up parameter can be retained. The start-up parameter is automatically saved at start-up if the power reset is responsive to a start-up from a shut-down condition. The start-up parameter may be a zero tension amplified output responsive to the sensor offset at zero tension. Protection of a tension data set is provided such that no opportunity for altering the data set is presented prior to transfer of the data set. A housing configuration forms part of an electrical power circuit for providing electrical power to an electronics package from a battery.
26 Citations
18 Claims
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1. In a system for installing an underground utility by retraction that is applied to a leading end of the utility to draw the utility through the ground such that the utility is subjected to a tension force during installation, a tension monitoring apparatus, comprising:
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a sensor for sensing the tension force to produce a tension signal; an electronic section for using the tension signal; a battery for supplying electrical power to said electronic section; and a housing for supporting the sensor in a way that exposes the sensor to said tension force and for defining an elongated chamber between a pair of opposing, first and second ends, said housing being electrically conductive and a first one of said ends configured for receiving said tension force such that the tension force is transferred through the housing to the second one of said ends for then transferring the tension force to said utility, and said electronic section being positionable in said chamber with said battery such that said housing serves as at least a portion of an electrical circuit for supplying said electrical power to the electronic section from the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a system for installing an underground utility by retraction that is applied to a leading end of the utility to draw the utility through the ground such that the utility is subjected to a tension force during installation, a method comprising:
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providing a sensor at least for sensing the tension force to produce a tension signal; interfacing the sensor to an electronic section for using the tension signal; providing a battery for supplying electrical power to said electronic section; arranging a housing for supporting the sensor in a way which exposes the sensor to said tension force and for defining an elongated chamber between a pair of opposing, first and second ends, said housing being electrically conductive, and configuring a first one of said ends for receiving said tension force such that the tension force is transferred through the housing to the second one of said ends for then transferring the tension force to said utility; and positioning said electronic section in said chamber with said battery such that said housing serves as at least a portion of an electrical circuit for supplying said electrical power to the electronic section from the battery. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification