CN213364806U

CN213364806U - Hand-held digital wind speed and wind meter

Info

Publication number: CN213364806U
Application number: CN202022485726.2U
Authority: CN
Inventors: 钟心全; 钟日祺; 林玉江
Original assignee: Dongguan Wanchuang Electronic Products Co ltd
Current assignee: Dongguan Wanchuang Electronic Products Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-06-04
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a hand-held digital wind speed and wind meter, which comprises a controller, a display screen, a key group, a wind wheel, a battery, a power circuit, a USB communication circuit, a USB interface, a memory and a data display circuit, wherein the controller is electrically connected with the memory, the power circuit, the USB communication circuit, the key group and the data display circuit, the power circuit is electrically connected with the battery to control whether the battery supplies power or not, the data display circuit is electrically connected with the display screen to convert a controller signal into a display signal corresponding to the display screen, the USB communication circuit is electrically connected with the USB interface to act as a protocol converter between the USB interface and the controller, so that the controller can be connected with an external terminal through the USB interface, the hand-held digital wind speed and wind temperature meter also comprises a wind speed and wind temperature collecting circuit, the wind speed and wind temperature collecting circuit comprises a thermistor and an optical coupler, a, the receiver of opto-coupler is connected with the controller electricity, and thermistor's one end ground connection, controller electricity connection thermistor keep away from ground one end.

Description

Hand-held digital wind speed and wind meter

Technical Field

The utility model relates to a wind speed measurement technical field, concretely relates to hand-held type digit anemometer.

Background

The existing hand-held wind wheel anemometer measures wind speed, a controller calculates the wind speed by acquiring the rotating speed of a wind wheel, but the hand-held anemometer usually does not have the function of wind temperature acquisition, and needs to acquire wind temperature, and an additional wind thermometer is needed for acquisition, although the wind ball anemometer has the functions of wind speed acquisition and wind temperature acquisition, the wind ball anemometer is very expensive in manufacturing cost and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lower hand-held type digit anemometer's of cost hardware architecture, programmer are to this hardware architecture programming back, and this hardware architecture has wind speed collection function and wind temperature collection function.

The hand-held digital wind speed and wind temperature meter comprises a controller, a display screen, a key group, a wind wheel, a battery, a power circuit, a USB communication circuit, a USB interface, a memory and a data display circuit, wherein the controller is electrically connected with the memory, the power circuit, the USB communication circuit, the key group and the data display circuit, the power circuit is electrically connected with the battery to control whether the battery supplies power or not, the data display circuit is electrically connected with the display screen, the USB communication circuit is electrically connected with the USB interface to serve as a protocol converter between the USB interface and the controller, so that the controller can be connected with an external terminal through the USB interface, the hand-held digital wind speed and wind temperature meter further comprises a wind speed and wind temperature acquisition circuit, the wind speed and wind temperature acquisition circuit comprises a thermistor and an optocoupler, a transmitter and a receiver of the optocoupler are respectively positioned at two ends of the wind wheel, a receiver of, the controller is electrically connected with one end of the thermistor far away from the ground.

The alarm prompting device comprises a controller, a buzzer, an alarm prompting circuit and a controller, wherein the controller is electrically connected with the buzzer of the alarm prompting circuit to control the buzzer of the alarm prompting circuit to give out or stop an alarm sound.

Furthermore, one end of the buzzer is connected with the power supply after being connected with the resistor in parallel, the other end of the buzzer is grounded through the triode, and the controller is electrically connected with the base electrode of the triode.

Further, the display device further comprises a backlight circuit for providing backlight for the display screen, the backlight circuit comprises at least one LED lamp, and the controller is electrically connected with the backlight circuit to control the LED lamp of the backlight circuit to be turned on or turned off.

Furthermore, the anode of the LED lamp is connected with a power supply, the cathode of the LED lamp is grounded through a triode, and the controller is electrically connected with the base of the triode.

Has the advantages that:

the controller obtains the rotational speed of wind wheel through the opto-coupler to calculate the wind speed through the rotational speed of wind wheel, and the wind speed multiplies with the area of wind wheel and obtains the component, and the controller calculates the resistance of thermistor through gathering the voltage of the remote one end of thermistor, and further obtains the wind-warm syndrome through the resistance, owing to adopt the wind wheel to test the speed, its cost is lower, satisfies the market needs.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of an air velocity flowmeter of the present invention;

FIG. 2 is a functional structure diagram of the wind velocity flowmeter of the present invention;

fig. 3 is a circuit diagram of a power supply circuit of the present invention;

fig. 4 is a circuit diagram of a USB communication circuit of the present invention;

fig. 5 is a circuit diagram of the wind speed and wind temperature collecting circuit of the present invention;

fig. 6 is a circuit diagram of a backlight circuit of the present invention;

fig. 7 is a circuit diagram of the alarm prompting circuit of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1, the anemometer of the present embodiment includes a display screen 1 of an LCD, a key set 2, and a wind wheel 3.

Referring to fig. 2, the anemometry apparatus of the present embodiment further includes a controller 4, and a power circuit 5, a USB communication circuit 6, a wind speed and wind temperature acquisition circuit 7, a backlight circuit 8, an alarm prompt circuit 9, a data display circuit 10, and a memory 11 electrically connected to the controller 4, where the controller 4 is electrically connected to the key set 2, and a user controls the anemometry apparatus through the key set 2.

The memory 11 is used for storing past historical measured values, the past historical measured values can be displayed on the display screen 1 after being called by a user, and when the wind speed meter is connected with an external terminal, the stored data can be output to external terminal analysis software for analysis.

As shown in fig. 3, the power circuit 5 is electrically connected to the battery to control the on/off of the air velocity flowmeter by controlling whether the battery supplies power to the air volume anemometer, the power circuit 5 is electrically connected to the power switch button of the button group 2, and the user presses the power switch to control whether the power circuit 5 supplies power.

The USB communication circuit 6 includes a conversion chip U3 for converting the USB-URAT protocol, as shown in fig. 4, and the USB communication circuit 6 electrically connects the USB interface and the controller 4, respectively, thereby functioning as a protocol converter, enabling the controller 11 to establish a connection with an external terminal using the USB protocol.

Wind speed and wind temperature collection circuit 5 is shown in fig. 7, including thermistor and opto-coupler, the transmitter and the receiver of opto-coupler are located the both ends of wind wheel 3 respectively, the receiver of opto-coupler is connected with controller 4 electricity, controller 4 acquires the rotational speed of wind wheel through the opto-coupler, and calculate the wind speed through the rotational speed of wind wheel, the wind speed obtains the component with the area multiplication of wind wheel, thermistor's one end ground connection, controller 4 calculates thermistor's resistance through the voltage of gathering the far-off ground one end of thermistor, and further obtain the wind temperature through the resistance.

As shown in fig. 6, the base of the transistor Q4 of the backlight circuit 8 is electrically connected to the controller 4, so that the controller 4 controls whether the light emitting diode generating backlight emits light by controlling the conduction of the transistor Q4, and when the anemometer is in the dark, the user can increase the brightness of the display screen 1 by making the light emitting diode emit light to generate backlight, so as to avoid affecting the use of the anemometer.

The alarm prompting circuit 9 is shown in fig. 7 and comprises a buzzer BZ1, one end of the buzzer BZ1 is connected with a power supply after being connected with a resistor in parallel, the other end of the buzzer BZ is grounded through a triode, and the base electrode of the triode is electrically connected with the controller 4, so that the controller 4 can control the buzzer BZ1 to give an alarm sound to prompt a user under the conditions that the electric quantity of a single battery is insufficient, the storage space is insufficient or other alarms are needed.

The data display circuit 10 is electrically connected to the display screen 1, and is configured to convert a signal input by the controller 4 into an LCD display signal corresponding to the display screen 1 and output the LCD display signal to the display screen 1, so as to display information such as a measured wind temperature value, a measured wind speed value, and an alarm signal on the display screen 1, and reduce the number of IO ports of the controller 11 required for controlling the display screen 1.

It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a hand-held type digit wind velocity anemometer, includes controller (4), display screen (1), presses key group (2), wind wheel (3), battery, power supply circuit (5), USB communication circuit (6), USB interface, memory (11) and data display circuit (10), memory (11), power supply circuit (5), USB communication circuit (6), press key group (2) and data display circuit (10) are connected to controller (4) electricity respectively, and power supply circuit (5) electricity is connected the battery and is supplied power with control battery, and display screen (1) is connected to data display circuit (10) electricity, and USB communication circuit is connected with the USB interface electricity in order to act as the agreement converter between USB interface and controller (4) to make controller (4) can establish with external terminal through the USB interface and be connected, its characterized in that: the wind speed and wind temperature collecting circuit (7) comprises a thermistor and an optocoupler, a transmitter and a receiver of the optocoupler are respectively located at two ends of the wind wheel (3), the receiver of the optocoupler is electrically connected with the controller (4), one end of the thermistor is grounded, and the controller (4) is electrically connected with one end of the thermistor, which is far away from the ground.

2. A hand-held digital anemometer according to claim 1 and further comprising: still include warning suggestion circuit (9), warning suggestion circuit includes bee calling organ, controller (4) electric connection warning suggestion circuit (9) send or stop the alarm sound with the bee calling organ of control warning suggestion circuit (9).

3. A hand-held digital anemometer according to claim 2 and further comprising: one end of the buzzer is connected with the power supply after being connected with the resistor in parallel, the other end of the buzzer is grounded through the triode, and the controller (4) is electrically connected with the base electrode of the triode.

4. A hand-held digital anemometer according to claim 1 and further comprising: the LED backlight module is characterized by further comprising a backlight circuit (8) for providing backlight for the display screen (1), wherein the backlight circuit (8) comprises at least one LED lamp, and the controller (4) is electrically connected with the backlight circuit (8) to control the LED lamp of the backlight circuit (8) to be turned on or turned off.

5. A hand-held digital anemometer according to claim 4 and further comprising: the anode of the LED lamp is connected with a power supply, the cathode of the LED lamp is grounded through a triode, and the controller (4) is electrically connected with the base of the triode.