A novel tracing apparatus includes an electromagnetic transmitting system, a multi-frequency transmitting antenna, electrodes, and a receiver. The electromagnetic transmitting system is at an upstream point and includes a generator and a transmitter having a capacitor; the transmitting antenna penetrates into a detected aquifer through karst collapse or a drill hole; the electrodes and the receiver are at a downstream point, and include two pairs of electrodes orthogonally distributed and located in a cofferdam formed by downstream water; and the receivers collect electric signals in the electrodes. The apparatus is based on good electrical conductivity of water, and can use electromagnetic signals as a tracer for rapid observation. Compared with traditional tracers, electromagnetic signals propagate fast in water, are stable in property, and free of pollution. This apparatus can be applied to groundwater tracing detection, and problems with the traditional tracers having poor timeliness and being environmentally unfriendly are resolved.

An electronic rodent trap is provided that includes a microprocessor and a resistive sensor coupled to a high voltage killing circuit and to a wash down sensor. Upon detecting a resistance, the resistive sensor sends a detection signal to the microprocessor. The microprocessor activates the wash down sensor to determine whether the resistance is above a threshold value and/or shows variation characteristics consistent with the presence of a rodent and thus warranting activation of the killing circuit. Resistance that is below the threshold indicates the presence of water such that the killing circuit is not activated and false triggering of the electronic rodent trap is prevented. Animal traps and monitoring stations incorporating a wash down sensor for pest detection but without killing mechanisms are also provided.

An electronic rodent trap is provided that includes a microprocessor and a resistive sensor coupled to a high voltage killing circuit and to a wash down sensor. Upon detecting a resistance, the resistive sensor sends a detection signal to the microprocessor. The microprocessor activates the wash down sensor to determine whether the resistance is above a threshold value and/or shows variation characteristics consistent with the presence of a rodent and thus warranting activation of the killing circuit. Resistance that is below the threshold indicates the presence of water such that the killing circuit is not activated and false triggering of the electronic rodent trap is prevented. Animal traps and monitoring stations incorporating a wash down sensor for pest detection but without killing mechanisms are also provided.

A system and method for evaluating a subterranean earth formation as well as a method of steering a drill bit in a subterranean earth formation. The system comprises a logging tool that is operable to measure formation data and locatable in a wellbore intersecting the subterranean earth formation. The system also comprises a processor that is in communication with the logging tool. The processor is operable to calculate multiple distance-to-bed-boundary (DTBB) solutions using the measured formation data, identify DTBB solutions that satisfy a threshold, convert the identified solutions into pixelated solutions by dividing the identified solutions into pixels, generate a formation model based on the pixelated solutions, and evaluate the formation using the generated formation model.

A system and method for evaluating a subterranean earth formation as well as a method of steering a drill bit in a subterranean earth formation. The system comprises a logging tool that is operable to measure formation data and locatable in a wellbore intersecting the subterranean earth formation. The system also comprises a processor that is in communication with the logging tool. The processor is operable to calculate multiple distance-to-bed-boundary (DTBB) solutions using the measured formation data, identify DTBB solutions that satisfy a threshold, convert the identified solutions into pixelated solutions by dividing the identified solutions into pixels, generate a formation model based on the pixelated solutions, and evaluate the formation using the generated formation model.

A test apparatus detects the presence of a connector such as a body clip within a holder of a wiring harness assembly board and is configured to confirm at least one characteristic of the connector defined by a positional relationship between two features of the connector. The holder has a receiving section for receiving the connector, and first and second contact elements that are engaged by the first and second features of the connector when it is inserted in the holder. The first and second contact elements are operative to activate a signal generator. The first and second contact elements have a positional relationship corresponding to the desired characteristic of the connector and are configured such that the signal generator is only operated when the first and second contact elements are contacted simultaneously by the first and second features of the connector.

A test apparatus detects the presence of a connector such as a body clip within a holder of a wiring harness assembly board and is configured to confirm at least one characteristic of the connector defined by a positional relationship between two features of the connector. The holder has a receiving section for receiving the connector, and first and second contact elements that are engaged by the first and second features of the connector when it is inserted in the holder. The first and second contact elements are operative to activate a signal generator. The first and second contact elements have a positional relationship corresponding to the desired characteristic of the connector and are configured such that the signal generator is only operated when the first and second contact elements are contacted simultaneously by the first and second features of the connector.

A long-term in-situ observation device for the deep sea bottom supported engineering geological environment is provided, including: a sediment acoustic probe, a sediment pore water pressure probe, a three-dimensional resistivity probe, a water observation instrument, a long-term observation power supply system, a probe hydraulic penetration system, a general control and data storage transmission system, an acoustic releaser, an underwater acoustic communication apparatus, and an instrument platform. The observations include the engineering properties, physical properties, mechanical properties, and biochemical properties of a seawater-seabed interface-sediment. The engineering properties and the physical and mechanical indexes of seafloor sediments are comprehensively determined by three-dimensional measurement of seafloor resistivity and acoustic wave measurements. The physical and biochemical properties of seawater are expected to be acquired by sensors. The observation probe penetrates into the sediments following the hydraulic method.

A method is for determining a status of a track section of a railroad. Each end of the track section is connected to a respective detector. One of the two detectors transmits a current along the rails of the track section towards the other detector and receives a current transmitted along the rails of the track section from the other detector. The track section is further equipped with a computer in communication with the two detectors. The computer calculates an instant value of the status of the track section as a function of an instant vector based on a measure of an intensity of the current transmitted by a first of the detectors as measured by the first detector (Txl1), a measure of an intensity of the current received by the first detector as measured by the first detector (Rxl1) and a measure of an intensity of the current transmitted by the second detector as measured by the second detector (Txl2).

A method is for determining a status of a track section of a railroad. Each end of the track section is connected to a respective detector. One of the two detectors transmits a current along the rails of the track section towards the other detector and receives a current transmitted along the rails of the track section from the other detector. The track section is further equipped with a computer in communication with the two detectors. The computer calculates an instant value of the status of the track section as a function of an instant vector based on a measure of an intensity of the current transmitted by a first of the detectors as measured by the first detector (Txl1), a measure of an intensity of the current received by the first detector as measured by the first detector (Rxl1) and a measure of an intensity of the current transmitted by the second detector as measured by the second detector (Txl2).