System and method for testing lightning current of antenna feeder of relay station

The invention belongs to the technical field of relay station lightning current testing, and particularly relates to a relay station antenna feeder lightning current testing system and method. A relay station antenna feeder lightning current test system comprises a communication iron tower and a signal machine room in a high-speed rail relay station, and further comprises a lightning surge impact subsystem, a signal acquisition subsystem and a remote control subsystem, and the lightning surge impact subsystem is connected with a lightning rod at the top end of a tower body of the communication iron tower and used for simulating lightning stroke; thunder and lightning pulse current is injected into the communication iron tower; the signal acquisition subsystem comprises more than two current acquisition devices, and the current acquisition devices are arranged on the communication iron tower and are used for acquiring lightning current data flowing through the communication iron tower under ...

Aritifical stone polished brick and producing method thereof

Polishing brick and its preparing process

Polishing brick and method for making same

The polishing bricks and their prepare method. It is characterized in that: during the wax-polishing process, the antiseptic mixed antifouling wax combining the nm wax and the silver ions is used to polish the brick surface. Therefore, the polishing bricks are composed of the main body of the polishing bricks and the antiseptic mixed antifouling wax which permeates into the minimal pores on the surface of the main body. Compared with the existing techniques, the polishing bricks have antiseptic function.

Ultrasound atomization pipe support system with headset

The utility model discloses an ultrasound atomization pipe support system with a headset. A bottom end of a stretching support arm is fixed on the table board of a treatment table; a universal wheel bracket is connected under the treatment table; an ultrasound atomization device is arranged on the treatment table; the stretching support arm is connected with a dosing threaded pipe vertically, one end of the dosing threaded pipe is connected with a drug atomization can and the other end is connected with a dosing soft mouth; one end of a spring support is connected with the dosing soft mouth and the other end is connected with the headset; and a connecting belt of the headset is provided with a music module. The ultrasound atomization pipe support system can be used for relieving mind and body fatigue caused by long-time handholding of the dosing threaded pipe for patients and increasing the cure rate for patients.

PCR method of multiple sex propagate pathogene synchronous detection and kit

The invention discloses a single-tube multiple PCR method for synchronous rapid detection of five sex propagate pathogenes (neisseria gonorrhoeae (NG), mycoplasma hominis (MH), mycoplasma genitalium (MG), chlamydia trachomatis (CT) and ureaplasma urealyticum (UU)) and a kit. The method is characterized by amplifying the five pathogenes and performing gel electrophoresis separation and detection by reasonably designing a primer and optimizing the primer concentration combination and PCR condition in the same reaction tube and under the same heat cycle condition. The invention has the characteristics of sensitivity, rapidness, convenience, and the like of the classic PCR, mainly realizes synchronous detection of the five pathogenes, has lower cost, can be used for developing relative kits and is used for clinical diagnosis and epidemiological survey and control.

Marine engine control system

The invention relates to a marine engine control system which is characterized in that a display alarm controller is electrically connected with an indicator lamp button unit, a circuit breaker, a switching value output module, a charging module, a contactor and a switching power supply, and the indicator lamp button unit is electrically connected with a sea water pump control unit; the seawater pump control unit is electrically connected with the emergency stop button and the diesel engine controller, the emergency stop button and the diesel engine controller are electrically connected with the relay module, the switching value output module is electrically connected with the charging module, the charging module is electrically connected with the switching power supply, and the switching power supply is electrically connected with the contactor. And the circuit breaker and the contactor are externally connected with wiring terminals. The technical effects of the invention are as follows ...