The invention discloses an equivalent-time rainfall rain sample meter, belongs to the fields of hydrology and meteorology and particularly relates to a device for measuring the rainfall according to period of time. The equivalent-time rainfall rain sample meter comprises a primary rain receiving hopper, a casing, a takeover tube, a secondary rain hopper, a water-dividing catheter, a stepped motorcontrol device and a rainfall measuring cup, wherein the primary rain receiving hopper is inserted into the casing and is connected with the takeover tube; the secondary rain receiving hopper is arranged below the takeover tube; the lower part of the secondary rain receiving hopper is connected with the water-dividing catheter; two ends of the water-dividing catheter are closed; a downward-opening hole is arranged at the far end of the water-dividing catheter; and the rainfall measuring cup is arranged below the downward-opening hole. The invention has the advantages that: firstly, the equivalent-time division of rain can be realized by a stepping motor for the first time; and secondly, the time division is quite fine by replacing the rainfall measuring cups and shortening the each-step stay time of the stepping motor as long as the number of the rainfall measuring cups is enough.

Equivalent-time rainfall rain sample meter

The invention discloses a rainfall monitoring device which comprises a water storage chamber (1) and a rain cup (2) communicated with the water storage chamber (1). A floating block (4) is arranged in the water storage chamber (1), an induction pole plate (5) is arranged on the floating block (4) and provided with a capacitive displacement sensor (6), the capacitive displacement sensor (6) is connected with a signal processing controller (7) which is connected with a displayer (8), a drain pipe is arranged on the bottom of the water storage chamber (1) and provided with a drain solenoid valve (9), and a water inlet solenoid valve (10) is arranged on a communicating pipeline between the water storage chamber (1) and the rain cup (2). By the adoption of the structure, too much or too little rainwater can be prevented from existing in the water storage chamber, the fact that floating block is always in a floating state can be ensured, the increasing amount of the rainwater in the water storage chamber is identical to the upward floating amount of the floating block, and thus measuring precision is guaranteed.

Rainfall monitoring device

The invention relates to a rainfall measuring sensor without a mechanical structure, and solves the technical problems that existing mechanical tipping-bucket rain gauges are inaccurate in measurement and poor in reliability. The rainfall measuring sensor comprises a bucket type capacitor, a capacitance measurement circuit, a single-chip microcomputer and a liquid crystal display module. The capacitance measurement circuit is connected with the single-chip microcomputer. The liquid crystal display module is connected with the single-chip microcomputer. The bucket-type capacitor comprises a corrosion-resistant insulated measuring cylinder which is provided with an external wall and a cylinder bottom part. A metal foil is connected at the external wall of the corrosion-resistant insulated measuring cylinder. A stainless steel bar is perpendicularly connected at the cylinder bottom part of the corrosion-resistant insulated measuring cylinder. The stainless steel bar is positioned at the central axis of the corrosion-resistant insulated measuring cylinder. The metal foil and the stainless steel bar are respectively connected with the capacitance measurement circuit via lead wires. The rainfall measuring sensor without the mechanical structure is widely applied to the technical field of monitoring of rainfall and other liquid amount.

Rainfall measuring sensor without mechanical structure

The invention discloses a high-precision rainfall monitoring device which comprises a water storage chamber (1) and a rain cup (2) communicated with the water storage chamber (1), wherein a floating block (4) is arranged in the water storage chamber (1), an induction polar plate (5) is arranged on the floating block (4), a capacitance displacement transducer (6) is arranged on the induction polar plate (5), a signal processing controller (7) is connected to the capacitance displacement transducer (6), and a display (8) is connected to the signal processing controller (7). Through the adoption of the structure, the rainfall change can be observed visually, and meanwhile, the precision is higher.

High-precision rainfall monitoring device

Disclosed is a pluviometer for large-farmland plantation. The pluviometer comprises a cylindrical sealed housing, the housing is internally provided with a separator plate for dividing the housing into an upper cavity and a lower cavity, a water inlet pipe is arranged somewhere nearby the top end of the lower cavity, the water inlet pipe comprises an aslant upward pipe body and a taper water inlet bucket arranged at the top end of the pipe body, the water inlet bucket is internally provided with a filter screen, the bottom end of the housing is provided with a water outlet pipe, the water inlet pipe and the water outlet pipe are each provided with a solenoid valve, the lower cavity is internally provided with a floating ball and a floating rod connected with the floating ball, the floating rod passes through a through hole arranged at the center of the separator plate to extend into the upper cavity, the top end of the floating rod is provided with a contact plate, limiting switches are respectively arranged above and below the upper end surface and the lower end surface of the contact plate, and the floating rod is provided with a displacement sensor.

Pluviometer for large-farmland plantation

The utility model discloses a hyetograph for measuring rainfall belonging to a meteorological apparatus technical field. Resolving a technical problem of the prior art which is large inaccuracy of measurement. The hyetograph comprises a defrosting device, a funnel, a float chamber, a floater and an induced rod. A water inlet of the float chamber is provided with a water penetrated electromagnetic valve, a water outlet of the float chamber is provided with a draining electromagnetic valve, a transducer is arranged on a float induced rod, an up-limit switch and a sub-limit switch are respectively arranged on an up-portion and a sub-portion of the transducer, wherein, the water penetrated electromagnetic valve is a normal open electromagnetic valve, the draining electromagnetic valve is a normal close electromagnetic valve, operating circuits which are connected with the water penetrated electromagnetic valve and the draining electromagnetic valve are controlled by the up-limit switch and the sub-limit switch, the transducer is connected with a signal processor and a display by the circuits. Compared with the prior art, the utility model has the advantages that the design of the structure is reasonable, the use and the operation are convenient, the measuring result error is quite small, and the generalized value is endowed.

A hyetometer for measuring the amount of rainfall

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A hyetometer for measuring the amount of rainfall