CN201141865Y - Wind speed sensor with sound and light alarm - Google Patents

Abstract

A wind speed sensor with sound and light alarm, a transparent lampshade (2) and a middle board (7) below the transparent lampshade (2) are installed between the side board (8) and the upper board (3) of the wind speed sensor, The lampshade (2), the middle board (7) and the upper board (3) are fixed on the side board (8) by screws, and the alarm circuit board (6) and the alarm circuit board (6) are installed in the lampshade (2). The LED on the circuit board (6), the alarm circuit board (6) is connected with the sensor circuit board, and the buzzer (10) connected with the alarm circuit board is installed on the casing (5). The utility model adds sound and light alarm circuit, buzzer and LED to the original coal mine wind speed sensor, when the wind speed in the mine does not reach the safety standard, it can intuitively send out sound and light intelligent alarm, thereby preventing the occurrence of mine accidents; And the utility model is simple in structure, and cost is low.

Description

Wind speed sensor with sound and light alarm

technical field

The utility model relates to a sensor, in particular to a wind speed sensor with sound and light alarm for underground operations.

Background technique

In order to ensure that there is enough air volume in the mine to dilute the gas and protect the life safety of the miners, it is necessary to measure the wind speed in the mine at any time. At present, wind speed sensors used in coal mines are often used to continuously monitor the wind speed in the mine ventilation main return airway, main underground wind measuring stations and fans, etc. The wind speed sensors used in coal mines are important instruments for measuring mine ventilation safety parameters. The wind speed sensor for coal mine is mainly composed of a housing, a display screen installed on the housing, and a wind receiving device located below the housing and connected to the housing through a connecting rod. The sensor circuit board is installed in the housing. The wind receiving device is composed of two parts: the air guide body and the wind speed signal generator installed in the air guide body. The wind speed signal generator is connected with the sensor circuit board through the wire passing through the connecting rod. The wind speed is converted into an electrical signal by the wind speed signal generator, and then transmitted to the sensor circuit board for processing. After processing, it is displayed on the display screen, which has the advantage of visually displaying the wind speed. However, since the wind speed sensor for coal mine is placed in the mine, so Either security personnel are required to check at any time. However, sending special personnel to monitor is not only time-consuming, but also has poor accuracy. When the wind speed does not meet the standard, it cannot give a timely warning; or the wind speed sensor is used in conjunction with other security monitoring systems. The cost of monitoring wind speed is too high.

Utility model content

The purpose of the utility model is to provide a wind speed sensor with sound and light alarm, when the wind speed in the mine does not reach the safety standard, it can intuitively send out sound and light alarm signals.

In order to achieve the above purpose, the utility model is mainly improved on the original wind speed sensor used in coal mines. By adding sound and light alarm circuit and corresponding equipment, the wind speed sensor can not only measure the wind speed, but also when the wind speed in the mine does not reach the safety standard. , can also intelligent sound and light alarm, the specific technical scheme is as follows: a wind speed sensor with sound and light alarm, including a housing, a display screen installed on the housing and a connecting rod located below the housing and connected to the housing The connected wind receiving device, the sensor circuit board is installed in the housing, the wind receiving device is composed of two parts: the air guide body and the wind speed signal generator installed in the air guide body, the air guide body is composed of front and rear side panels and an upper plate and a lower plate respectively installed on the upper and lower ends of the front and rear side plates, the wind speed signal generator is connected to the sensor circuit board through the wire passing through the connecting rod, and the two side plates are connected to the upper plate A transparent lampshade and a middle plate located below the transparent lampshade are installed between them, and the lampshade, the middle plate and the upper plate are fixed on the side plates by screws; an alarm circuit board and the alarm circuit board are installed in the lampshade The alarm circuit board is connected to the sensor circuit board; a buzzer connected to the alarm circuit board is installed on the front surface of the housing.

As a preferred example, the above-mentioned lampshade is made of a frame made of red plastic, so that the light emitted by the lampshade is red light, which is eye-catching and can increase the alarm effect. The frame body is surrounded by mounting lugs, the mounting lugs are provided with round holes, and the inner ends of the mounting lugs are provided with steps; The inner end of the lampshade is provided with a step, and the alarm circuit board is installed in the lampshade by installing the inner step of the lug and the pillar.

As yet another preferred example, the inner wall of the lampshade is tooth-shaped, and the tooth-shaped inner wall can refract the light generated by the LED to increase the intensity of light.

In order to retain the structure of the original wind speed sensor as much as possible to reduce the cost of re-opening the mold, the utility model adds a lampshade between the middle plate and the upper plate of the original casing, and the circuit board is placed in the lampshade through the steps inside the lampshade. There are screws to fix and clamp, and the circuit board connection is connected to the housing through the connecting rod, which is convenient for installation; and the lampshade does not protrude outward, so it is not easy to be impacted and broken.

Beneficial effects: the utility model adds sound and light alarm circuits, buzzers and LEDs to the original wind speed sensor used in coal mines. When the wind speed in the mine does not reach the safety standard, it can intuitively send out sound and light intelligent alarms, thereby preventing mine disasters The occurrence of; And the utility model is simple in structure, and transformation cost is low.

The utility model is further described below in conjunction with accompanying drawing and embodiment:

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of lampshade 6 of the present utility model;

Fig. 3 is the circuit diagram of the acousto-optic alarm of the utility model.

Detailed ways

As shown in Figure 1, it is a wind speed sensor with sound and light alarm, mainly composed of a housing 5, a wind receiving device and a lampshade 2, a handle 11 is installed on the upper end of the housing 5, and a sensor circuit board is installed in the housing 5 A buzzer 10 is installed in the middle of the front panel of the housing 5, a display screen 9 is installed on the housing 5 below the buzzer 10, and an external power line inlet 14 is installed on the side wall of the housing 5; the wind receiving device It consists of two parts, the air guide body and the wind speed signal generator installed in the air guide body. The air guide body consists of front and rear side plates 8a, 8b, and the middle plate 7 and the lower plate 1 respectively installed at the upper and lower ends of the front and rear side plates 8a, 8b. The wind speed signal generator is composed of a vortex generating body 13 installed on the lower plate 1 and sensors 12 installed on the front and rear side plates 8a, 8b. The wind drives the vortex generating body 13 to rotate to generate eddy currents, and the sensor 12 is responsible for sensing the size of the eddy currents. Convert into electric signal then; Described lampshade 2 and upper plate 3 above lampshade 2 top are installed on described middle plate 7, the LED on alarm circuit board 6 and this alarm circuit board 6 is installed in lampshade 2, upper plate 3, lampshade 2 and the middle plate 7 are fixed on the side plate 8 via screws; the upper end of the upper plate 3 is connected with the connecting rod 4 as a whole, the connecting rod is hollow, and the upper end of the connecting rod 4 extends into the shell 5 and is fixed on the shell by a nut. On the body 5, wires connecting the wind speed signal generator and the sensor circuit board and the alarm circuit board 6 and the sensor circuit board are passed through the connecting rod 4. The electrical signal generated by the sensor is transmitted to the sensor circuit board for processing through the wires. After the sensor circuit board processes, the wind speed is displayed on the display screen 9, and the sensor circuit board compares the instant wind speed with the set standard wind speed. Wind speed then sends warning signal to buzzer 10 and LED, sends sound and light alarm by buzzer 10 and LED.

As further shown in Figure 2, the lampshade 2 is a frame made of red PC plastic, and the inside of the frame is provided with mounting lugs 2a, and the mounting lugs 2a are provided with round holes, and the inner ends of the mounting lugs 2a are A first boss is provided, and the upper end surface of the first boss is lower than the upper end surface of the frame body; a pillar 2b is provided on the inner wall of the long side of the frame body, and a second boss is provided at the inner end of the pillar 2b, The upper end surface of the second boss is lower than the upper end surface of the frame body, and the upper end surface of the second boss is on the same plane as the upper end surface of the first boss. By installing the inner steps on the lugs 2a and the pillars 2b, the alarm circuit board 6 is fixed, and the inner wall of the frame body is set as toothed. The toothed inner wall can refract the light emitted by the LED and increase the intensity of light.

As shown in Figure 3, it is a working principle diagram of the utility model sound and light alarm:

In the figure, VCC is the working power supply, GND is the ground, ALARM is the alarm signal (the signal is provided by the CPU), B1 is the piezoelectric ceramic buzzer (providing the alarm sound signal), D103 and D104 are 4 groups of ￠3 super bright LEDs (provide alarm light signal), IC12 is an alarm driver chip (provide alarm frequency), D4 is a Zener diode.

When working normally, T6 (9013 transistor) is in the conduction state, the current comes in from VCC, does not pass through the alarm circuit composed of IC12, B1, D103, D104 and other peripheral devices, but directly flows to GND through T6, and the alarm circuit does not work; When alarming, the CPU provides an alarm signal ALARM, T6 changes from on to off, the current flows to GND through the alarm circuit, and the alarm circuit starts to work. IC12 provides a frequency of 2K Hz to B1, and B1 sends out an audible alarm signal. B1, D103 and D104 are connected in series, when B1 sends out sound alarm signal, D103 and D104 start to work at the same time and send out light alarm signal. The role of D4 is to stabilize the voltage and prevent the device from being damaged due to too high VCC.

Claims (3)

1. air velocity transducer that has sound and light alarm, comprise housing (5), be installed in the display screen (9) on this housing (5) and be positioned at housing (5) below and be subjected to wind apparatus through what connecting link (4) linked to each other with this housing (5), described housing is equipped with sensor circuit board in (5), the described wind apparatus that is subjected to is made up of wind guiding member and wind velocity signal generator two parts of being installed in this wind guiding member, wind guiding member is by preceding, back side panel (8a, before 8b) and respectively being installed in this, back side panel (8a, 8b) upper plate of upper and lower side (3) and lower plate (1) are formed, the lead of described wind velocity signal generator through passing described connecting link (4) links to each other with described sensor circuit board, it is characterized in that: described biside plate (8a, 8b) and Transparent lamp shade (2) is installed between the upper plate (3) and is arranged in the plate (7) of this Transparent lamp shade (2) below, this lampshade (2), in plate (7) and described upper plate (3) through screw retention on described side plate (8); LED on warning circuit plate (6) and this warning circuit plate (6) is installed in the described lampshade (2), and this warning circuit plate (6) links to each other with described sensor circuit board; The hummer (10) that links to each other with described warning circuit plate (6) is installed on the front surface of described biography housing (5).

2. the air velocity transducer that has sound and light alarm according to claim 1, it is characterized in that: the framework that described lampshade (2) is made by red plastic, the inboard is provided with journal stirrup (2a) is installed around this framework, this installation journal stirrup (2a) is provided with circular hole, and the inner that journal stirrup (2a) is installed is provided with first boss, and the upper surface of this first boss is lower than the upper surface of framework; The long limit inwall of described framework is provided with pillar (2b), and the inner of this pillar (2b) is provided with second boss, and the upper surface of this second boss is lower than the upper surface of framework, and the upper surface of the upper surface of this second boss and described first boss at grade.

3. the air velocity transducer that has sound and light alarm according to claim 1 and 2 is characterized in that: the inwall of described lampshade (2) is a dentation.

Images