Abstract: To provide a method and device for detecting buried metal, whereby it is possible to radio (wirelessly) transmit a synchronizing signal, and, when the frequency band of the transmission signal is restricted, to problem synchronous detection using a reference signal having a frequency equal to or greater than the frequency band.

Abstract: A detection method and detection device of buried metal which are capable of detecting singular points, in horizontal and vertical directions, of metal tubes, telecommunication cables, and electric power cables, or the like buried in the ground. A magnetic field component of the direction of 3 axes of a XYZ axis is detected by two or more magnetic sensors installed in the detectable direction, and detects a magnetic field induced to buried metal. While carrying out synchronous detection of these magnetic field components and calculating for each amplitude and each phase of a magnetic field component of the direction of 3 axes, image processing is carried out and it is outputted to a display. While calculating for the position of a singular point, a singular point distinguishes whether it is an over-crossing state, it is an under-crossing state, or it is a branched state from these image data.

Abstract: The present invention provides a leakage detector enabling accurate and stable detection for occurrence and a position of leakage in a buried fluid pipe line and also making it possible for even those not so skilled in the leakage detection work to use the detector. The leakage detector 1 according to the present invention comprises a vibration detector 2 having a pickup 6 incorporating a piezoelectric element; a main body 4 of the detector incorporating voltage amplifiers 31, 37 for voltage-amplifying an output signal and a plurality types of noise removing units 33, 34, 35 for removing noises from the output signal, and a headphone 5. The main body 4 of the detector has a display unit 15 for displaying data for detected vibration sounds on a predefined screen.

Abstract: The present invention provides a leakage detector enabling accurate and stable detection for occurrence and a position of leakage in a buried fluid pipe line and also making it possible for even those not so skilled in the leakage detection work to use the detector. The leakage detector 1 according to the present invention comprises a vibration detector 2 having a pickup 6 incorporating a piezoelectric element; a main body 4 of the detector incorporating voltage amplifiers 31, 37 for voltage-amplifying an output signal and a plurality types of noise removing units 33, 34, 35 for removing noises from the output signal, and a headphone 5. The main body 4 of the detector has a display unit 15 for displaying data for detected vibration sounds on a predefined screen.

Abstract: The vibration detecting apparatus comprises a pickup 2 encasing a piezoelectric element 8 therein, a cord 3 for transmitting an electric signal output by said piezoelectric element 8, and a noise absorbent member 4 in the form of a lump made of rubber, and formed therein with a cord insert path having at least one direction-changing portion 14a, said noise absorbent member being mounted at a suitable position of said cord. The noise absorbent member is preferably made of low repulsion elastic rubber and is preferably spherical. The cord inser path 14 is preferably in the shape of substantially U. According to the aforementioned construction, noises such as a wind-cut sound and a frictional sound generated at the cord can be effectively removed.

Abstract: An indoor environmental condition control and energy management system includes a plurality of inputs. A user input receives user input parameters including a desired indoor environmental condition range for at least one energy unit price point. An indoor environmental condition input receives a sensed indoor environmental condition. An energy price input receives a schedule of projected energy unit prices per time periods. A processor, coupled to the inputs, computes an environmental condition deadband range for multiple energy unit price points based on the user input parameters and controls at least one energy-consuming load device to maintain the indoor environmental condition within the computed deadband range for a then-current energy unit price point. In an embodiment, the environmental condition includes at least temperature and the at least one load device includes a heating and cooling system.

Abstract: An energy management and building automation system including a local area network or home automation data bus such as the CEBus. Each load to be controlled is connected to the bus via a control module. A control module may contain a relay or switch (hereafter referred to as a "breaker" or "circuit breaker") to disconnect the load from the mains upon command or upon occurrence of a power outage, or in either case. Current monitoring control modules determine whether connected loads are drawing current and power monitor modules monitor the power consumed by selected loads (from which energy consumption may be calculated). Both types of monitors may place on the bus messages to indicate load status or changes in load status. A first microcomputer preferably is placed externally to the customer premises, adjacent (or even within the housing of) the electric utility power meter. A second microcomputer preferably is placed inside the customer premises.

Abstract: A system for measuring electrical power interruptions in an electrical power distribution system to a customer premises, controlling the restoration of loads to the electrical power grid after power is restored following an outage, and facilitating preventive maintenance on the electrical power distribution system so that the reliability of power distribution is enhanced. A load control module is associated with each load whose power restoration is to be controlled. Following the occurrence of a power outage, when power is restored, an instruction is transmitted to each load control module by a controller at the premises to enable reconnection of the associated load to the power distribution system in a predefined sequence. At each customer premise, the power feed cable is monitored for the presence of a power signal thereon.

Abstract: A leakage-sound detecting apparatus is provided for efficiently detecting water leakage in a plastic pipe by increasing sensitivity to a low frequency sound component and efficiently reducing stray noise, as well as protecting a piezoelectric element. To this end a detection portion and a pedestal portion are connected through a mechanical resonant member formed of a soft material. A low frequency sound component is amplified by the resonant member, and high frequency components are substantially attenuated. In an alternative arrangement a detection portion and a mechanical resonant member mounted on a pedestal portion are connected through a buffer portion having a buffer member arranged therein. When a shock is applied to the bottom of the pedestal portion, due to the apparatus being dropped for example, the buffer member is compressed, and no overload is applied to a piezoelectric element.