The invention discloses a
heat metering device for cold water and hot water, which realizes that bidirectional flow for water inflow and backwater is detected, a temperature
signal and a flow
signal are wirelessly transmitted without
external connection leads, and operations of
wireless charging and
wireless meter reading can be carried out. The
wireless heat meter is suitable for cold water and hot water. The
heat metering device is provided with a reflection ultrasonic flow meter, a temperature sensor, a Zigbee controller and an LCD
liquid crystal display device. The reflection ultrasonic flow meter is connected in series in a water inlet (or backwater) pipeline; the temperature sensor is arranged inside the flow meter; the Zigbee controller is arranged on the upper part of the flow meter; and the LCD
liquid crystal display device is arranged on the top of the flow meter. Hardware, circuits and
software of two devices which are matched to use are all same, the
software firstly automatically sets a device connected with a high-temperature
pipe to be a master node mode, and sets a device connected with a low-temperature
pipe to be an auxiliary node mode when the two devices are used, the two
modes can be regularly switched, the faults are automatically switched and a double-controller is simultaneously operated in parallel. The
heat metering device for cold water and hot water is suitable for severe environment, such as strong
electromagnetic interference,
high voltage, high temperature,
high humidity and the like, and is widely applied to a cold water / hot water concentrated air-conditioner
heating system, thereby realizing separate metering for one meter each household.