30results about How to "Comprehensive monitoring parameters" patented technology

Disclosed are a phase change heat storage air source heat pump hot water unit control system and a control method thereof. A microcontroller unit, a sensor unit, an analog quantity conditioning unit, a data acquisition unit, a display unit, a communication unit, a control unit and a driving unit are combined to form the control system by means of a modularized system structure. By means of the automatic and data fusion technology, the operation state of a hot water unit is monitored, and automatic adjustment is achieved according to actual temperature of a thermal insulation water tank, environment temperature and different working conditions of the hot water unit. By means of the phase change heat storage air source heat pump hot water unit control system and the control method thereof, the monitored parameters are comprehensive; the structure is simple; control is convenient; continuous, reliable and safe operation of the hot water unit is achieved.

The invention discloses a dual-parameter monitoring method for a four-degree-of-freedom bidirectional wireless power transmission system. Key parameters influencing a system power factor and transmission efficiency are monitored on line in real time to master dynamic change of the key parameters, thereby providing a certain guarantee for energy interaction of the system under the condition of relatively high power factor and transmission efficiency. Specifically, a monitoring coil arranged at a middle point of resonance coils on the sides 1 and 2 of the bidirectional wireless power transmission system and a monitoring resistor connected in series with the monitoring coil are used as a monitoring platform, and an amplitude ratio and a phase difference of converter output voltages on the sides 1 and 2 of a system converter are obtained by taking the mutual inductance of the monitoring coil and the two resonance coils as a medium, specially, the amplitude ratio and the phase difference of the converter output voltages are indirectly reflected through a voltage phasor of the monitoring resistor. The monitoring platform can monitor the parameters within a relatively wide parameter change range, and a parameter monitoring result has relatively high precision.

The invention provides an intelligent monitoring system of the agricultural product cold chain logistics and a use method of the intelligent monitoring system. The system comprises a central monitoring station, a delivery bin monitoring station, a service point monitoring station, a community storage point monitoring station and a moving carrier. All components of the monitoring system communicate with each other through the Internet or local area network, and the intelligent monitoring system is a comprehensive monitoring system. According to the invention, remote monitoring is conveniently performed on each bin environment of the cold chain logistics; when the environment temperature and humidity are monitored, other factors of the environment are also monitored; especially when the cold chain logistical environment is abnormal, the monitoring system is capable of automatically giving out remote alarms, so managers who are not in the place can timely know the abnormal conditions of the cold chain logistical environment, it is convenient for managers near to the service station site can timely take corresponding measures to change the cold chain logistical environment and an effect of preventing environmental abnormity in the cold chain logistics bin from causing agricultural products to go bad to cause economical loss can be achieved.