Aiming at the real time monitoring requirement of poultry farms on the environment, a online monitoring system is proposed for poultry farms on the environment based on ZigBee, its application of ZigBee wireless networks and sensor technology. supply a network structure of monitoring system, monitoring system node controller of data acquisition, data transmission and control node, which is TI's...

We have designed, fabricated and tested a micromachined Coriolis flow sensor for the measurement of hydrazine (N2H4) propellant flow in a micro chemical propulsion system (μCPS). The sensor will be used for measurement and characterization of the μCPS in a simulated space vacuum environment. To reach the required flow range a bypass system is integrated. Initial measurements demonstrate an incr...

Passenger flow safety detection in high-speed railway transport hub is considered in this paper. For accurately detecting the passenger flow safety, an improved watershed algorithm and a recognition algorithm are respectively proposed in sensor-based detection process. Computational experiments on sensor data from a specific Chinese high-speed railway transport hub show that the proposed algori...

Inexpensive piezoelectric diaphragms can be used as sensors to facilitate both nozzle 1 height setting and build platform leveling in FFF (Fused Filament Fabrication) 3D printers. Tests 2 simulating nozzle contact are conducted to establish the available output and an output of greater 3 than 8 Volts found at 20oC, a value which is readily detectable by simple electronic circuits. Tests 4 are a...

Combining the Capacitively Coupled Contactless Conductivity Detection (C4D) technique and the principle of cross correlation flow measurement, a new method for flow rate measurement in millimeter-scale pipes was proposed. The research work included two parts. First, a new five-electrode C4D sensor was developed. Second, with two conductivity signals obtained by the developed sensor, the flow ra...

Various technologies have been used to measure airway flow for human respiration. This paper presents a flow sensor (pneumotach} that is capable of continuous, bi-directional airway flow measurement proximal to the patient and used in a critical care environment. This paper presents some of the findings of the research that was done in the development of a n~w flow sensor for long term flow mon...

With non-uniform traffic patterns in wireless sensor networks due to the many-to-one nature of communications, the traditional definition of connectivity in graph theory does not seem to be sufficient to satisfy the requirements of sensor networks. In this work, a new notion of connectivity (called path-implementability) is defined which represents the ability of sensor nodes to relay traffic a...

This paper presents design and assembly of mixed electronic circuitry for measured signal processing of the capacitive difference pressure sensor, as well as analysis of the obtained results. The smart pressure sensor provides values of measured pressure via 4 20 mA current loop output. The loop current is also used for sensor circuitry supplying. This means that current consumption of the whol...

The technological innovation in electronics makes nowadays mobile phone more than a simple communication tool: it becomes a portable electronic device with integrated functions, such as listening to music, watching movies, taking photos, etc. To achieve these, many kinds of advanced sensor are used. In this paper, several applications of sensor in smart phone are introduced including Image Sens...