35results about How to "With wireless transmission function" patented technology

The invention discloses a wireless sensor network for mine laneways. The wireless sensor network comprises wireless sensor network nodes. The network nodes are global function equipment of mine laneway mine pressure, fire extinguishment preventing, water control preventing and one-ventilation-and-three-prevention monitoring system sensors. An internetworking protocol is the ZigBee protocol. A network structure is a self-organizing and self-healing overlapping tree structure. A tree-shaped structure is adopted for the whole body of the structure. One wireless sensor network node is only communicated with adjacent wireless sensor network nodes. A gridding structure is adopted for local areas. One wireless sensor network node is only communicated with sub-adjacent wireless sensor network nodes. A tree shape is adopted for the whole body of the wireless sensor network. A network topology of the local gridding structure is adopted. The tree structure is adopted for the whole body so as to ensure data transmission in a long and narrow space. The gridding structure is adopted for the local areas, and each node only can be communicated with the adjacent or sub-adjacent nodes, so that communication smoothness at failure time of a certain node is ensured.

The invention provides a remote water pressure monitoring system. The system comprises remote wireless terminal equipment, a base station, a data acquisition server, a database server and an application server, wherein the remote wireless terminal is used for acquiring water pressure data on the spot and transmitting the acquired water pressure data to the base station; the base station is used for communicating with the remote wireless terminal equipment in one-to-one manner, receiving the water pressure data sent from the remote wireless terminal equipment and sending the water pressure data to the data acquisition server through a honeycomb module; the data acquisition server is used for acquiring the data sent by the base station and storing the data in the database server; the database server is used for finishing the processing and caching of the water pressure data and notifying a client to finish data report after confirming that the data storage is normal; and the application server is used for providing data services to the client application, including inquiry, updating, indexing, caching, inquiry optimization, safety and multi-user access control and alarm. The water pressure monitoring system provided by the invention has the characteristics of low power consumption, high speed and high reliability, and saves the material and data transmission cost; and due to a wireless transmission function, the equipment mounting and debugging are not limited by environments, and the equipment can be mounted and used in various environments.

The invention provides a speed measuring, positioning and triggering device for a rail vehicle collision test, which includes two pairs of opposite beam high-speed photoelectric switches, a speed measuring box, a baffle and a speed measuring frame. The speed measuring frame is placed between two rails and has a height of Below the bottom of the colliding vehicle, the through-beam high-speed photoelectric switch is installed on the speed measuring frame and faces each other. The horizontal height of the two pairs of through-beam high-speed photoelectric switch is the same and the lateral distance is S. The baffle is installed at the bottom of the colliding vehicle. When the colliding vehicle passes through the through-beam high-speed photoelectric switch before and after the collision, the baffle blocks the through-beam ray so that the through-beam high-speed photoelectric switch generates an interruption signal and transmits the interruption signal to the speed measuring box electrically connected thereto. The device of the invention can realize the collision speed of the collision vehicle, the rebound speed monitoring after the collision, the position information feedback and the triggering of other test equipment at the same time. The device also has the characteristics of being portable, movable and self-powered, and has the function of wireless transmission.

The invention discloses a multi-cylinder compensation type water surface evaporating / exhaling instrument and using method thereof, belonging to the plant physiology, ecology monitoring and wetland meteorology hydrology measurement technology field. The instrument consists of a group of evaporating / exhaling monitoring cylinders, communicating pipes and a data central processing system; the monitoring cylinders are in same specification, each has different evaporating / exhaling bodies disposed therein, and the number of the monitoring cylinder can be added according to the real condition; the data central processing system consists of a data acquisition box, a bidirectional rotating motor, a photoelectric switch, a ultrasonic wave sensor and a water tank, to realize data timing automatic acquisition and wireless delivering function; the operation mode designed by the PLC program comprises: measuring multiple monitoring cylinder water levels by the ultrasonic wave sensor, controlling the instrument to acquiring and storing the data in certain time automatically. The beneficial effect of the invention is that: The evaporating / exhaling instrument can be used for monitoring evaporating / exhaling amount of emerged plants of multiple species in multiple states at the same time, and achieves the advantages of low cost, high precision, easy maintenance and convenient data delivering.