Alarm

Abstract

The utility model relates to the technical field of alarm equipment, in particular to an alarm which comprises an installation machine base, and an induction unit and an alarm unit are arranged on the installation machine base. The mounting base is provided with a light-transmitting dustproof cover arranged outside the sensing unit in a covering mode and a light transmittance detection unit used for detecting the light transmittance condition of the light-transmitting dustproof cover, the light-transmitting dustproof cover is provided with an air inlet, and the device has the advantages that the manual inspection cost is reduced, and the use safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of alarm equipment, and in particular to an alarm. Background Art

[0002] In modern society, safety in public places and production workshops is of vital importance. In order to prevent disasters such as fire and poisoning by harmful gases, smoke and hazardous gas alarms have been widely used. These alarms are composed of a sensing unit and an alarm unit. When the sensing unit detects the detection medium such as harmful gases and smoke, the alarm unit is controlled to alarm. Among them, the sensor of the sensing unit is usually wrapped with a dust filter to prevent dust from affecting its function.

[0003] However, current alarms face a key problem. Although the dust filter can prevent the sensor from being covered with dust to a certain extent, factors such as dust and insect carcasses can still cause the filter to become clogged. What's worse is that once the filter itself is clogged, it is difficult to detect and clean it in time.

[0004] This blockage problem can cause the alarm to fail, preventing it from sounding the alarm in an emergency such as a fire or hazardous gas leak. This can have catastrophic consequences, and people may put their lives in danger because they rely on the failed alarm.

[0005] Therefore, we urgently need a solution to ensure the normal operation of the dust filter and to be able to detect and clean the clogged filter in time to ensure the continued effectiveness of the alarm. This is of great significance to protecting people's lives. Utility Model Content

[0006] In order to solve the risks caused by dust problems, the present application provides an alarm.

[0007] The present application provides an alarm device, which adopts the following technical solution:

[0008] An alarm device includes a mounting base, on which a sensing unit and an alarm unit are arranged, the mounting base is provided with a light-transmitting dust cover arranged outside the sensing unit, and a light transmittance detection unit for detecting the light transmittance of the light-transmitting dust cover, and the light-transmitting dust cover is provided with an air inlet.

[0009] In one embodiment: the transmittance detection unit is at least one, and the transmittance detection unit includes a light emitter and a light receiver respectively arranged on the inner and outer sides of the light-transmitting dust cover, and the light emitter and the light receiver are arranged opposite to each other; or,

[0010] The light transmittance detection unit comprises a light emitter and a light receiver both arranged outside the light-transmitting dust cover, the light emitter and the light receiver are arranged opposite to each other, and the light-transmitting dust cover is located between the light emitter and the light receiver.

[0011] In one embodiment, the transmittance detection unit is provided in plurality, and the plurality of light receivers are connected in series.

[0012] In one of the embodiments: the light emitter is a blue light or green light diode, and the light receiver is a blue light or green light sensor; or, the light emitter is a laser emitter, and the light receiver is a laser receiver.

[0013] In one of the embodiments: the light-transmitting dust cover is a light-transmitting silk screen, and the light-transmitting dust cover is detachably connected to the mounting base.

[0014] In one of the embodiments: the light-transmitting dust cover is connected to the mounting base via a rotating buckle.

[0015] In one of the embodiments: a dust removal unit for removing dust from the light-transmitting dust cover is provided on the mounting base, and when the transmittance detection unit detects that the light transmittance of the light-transmitting dust cover is lower than a preset value, the dust removal unit is started.

[0016] In one of the embodiments: the dust removal unit is a dust removal fan, and an air blowing pipe is provided on the mounting base, and two ends of the air blowing pipe are respectively connected to the dust removal fan and the light-transmitting dust cover.

[0017] In one embodiment, the inner diameter of the air blowing tube is larger than the diameter of the light-transmitting dust cover.

[0018] In one of the embodiments: the dust removal unit has a preset running time after startup, and stops when the preset running time is reached; wherein, when the dust removal unit reaches the running time and the transmittance detection unit detects that the transmittance of the translucent dust cover is lower than a preset value, a dust removal alarm signal is output.

[0019] In summary, this application has the following beneficial effects:

[0020] 1. The light transmittance detection unit can be used to detect the light transmittance of the light-transmitting dust cover to determine the dust accumulation situation, thereby reducing the cost of manual inspection;

[0021] 2. The light-transmitting dust cover can be dusted through the dust removal unit, reducing the cost of manual dust removal;

[0022] 3. When the dust removal unit is unable to complete the dust removal process on the light-transmitting dust cover, it can automatically notify manual dust removal operations to effectively ensure safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of this embodiment. Figure 1 , showing a structure of a transmittance detection unit;

[0024] Figure 2 is a bottom view of the present embodiment;

[0025] Figure 3 This is a schematic diagram of the structure of this embodiment. Figure 3 , showing another structure of the transmittance detection unit.

[0026] In the figure, 100, mounting base; 110, air blowing pipe; 120, porous mesh; 200, sensing unit; 300, alarm unit; 400, light-transmitting dust cover; 500, light transmittance detection unit; 510, light transmitter; 520, light receiver; 600, dust removal unit; 700, dust removal prompt unit; 800, electric control board. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings.

[0028] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0029] Embodiment 1: An alarm, such as Figure 1 As shown, it includes a mounting base 100, on which are provided an electric control panel 800, a sensing unit 200, an alarm unit 300, a light-transmitting dust cover 400, a transmittance detection unit 500, a dust removal unit 600 and a dust removal prompt unit 700. In this embodiment, the upper end of the mounting base 100 is used as a mounting end to form a mounting base structure, but it is not limited to this, and different structural settings can be arranged according to different scenarios and needs.

[0030] The electric control board 800 has a preset threshold for activating the alarm unit 300 to alarm. The sensing unit 200 detects hazardous gases and smoke, and when the concentration of the hazardous gases and smoke detected reaches the set threshold, the electric control board 800 activates the alarm unit 300 to alarm.

[0031] The sensing unit 200 is fixedly mounted on the bottom of the mounting base 100 , and the light-transmitting dust cover 400 is detachably mounted on the bottom of the mounting base 100 and covers the outside of the sensing unit 200 . An air intake detection hole is provided on the light-transmitting dust cover 400 .

[0032] The light-transmitting dust cover 400 is a light-transmitting screen, that is, a mesh structure formed by a linear transparent material, and the air intake detection hole thereon can be a strip-shaped or hole-shaped structure. Specifically, the light-transmitting dust cover 400 and the mounting base 100 are fixed by a rotating buckle connection in this embodiment.

[0033] The light transmittance detection unit 500 is used to detect the light transmittance of the light-transmitting dust cover 400 . The number of the light transmittance detection unit 500 is at least one, and the present embodiment is described by taking a plurality of units as an example.

[0034] The light transmittance detection unit 500 includes a light emitter 510 and a light receiver 520, which are respectively arranged on the inner and outer sides of the light-transmitting dust cover 400, and the light emitter 510 and the light receiver 520 are arranged opposite to each other. In this embodiment, as a preferred solution, the light emitter 510 is arranged inside the light-transmitting dust cover 400. The light emitter 510 and the light receiver 520 are arranged in a circle around the sensing unit 200.

[0035] Among them, multiple transmittance detection units 500 and light receivers 520 are connected in series, so that when one of the transmittance detection units 500 is abnormal, dust removal and alarm operations can be performed, and the dust cover surface can be detected in a larger range, thereby improving sensitivity and accuracy.

[0036] The light emitter 510 is a blue light or green light diode, and the light receiver 520 is a blue light or green light sensor. It should be emphasized here that the light of the light emitter 510 must be blue light or green light, and cannot be red light.

[0037] In other embodiments, the light transmitter 510 is a laser transmitter and the light receiver 520 is a laser receiver, wherein the laser transmitter and the laser receiver have better detection accuracy but higher cost. Therefore, in actual production, they can be selected based on cost and accuracy of use.

[0038] like Figure 3 As shown, in another embodiment, the light emitter 510 and the light receiver 520 are both arranged outside the light-transmitting dust cover 400, the light emitter 510 and the light receiver 520 are arranged opposite to each other, and the light-transmitting dust cover 400 is located between the light emitter 510 and the light receiver 520, and the number of the transmittance detection unit 500 in this embodiment is also at least one, wherein it is preferred to arrange a plurality of them.

[0039] like Figure 1As shown, the dust removal unit 600 is used to remove dust from the light-transmitting dust cover 400, wherein the dust removal unit 600 is a dust removal fan, which is arranged in the mounting base 100, and an air blowing pipe 110 is arranged in the mounting base 100, the dust removal fan is connected to the upper end of the air blowing pipe 110, and the lower end of the air blowing pipe 110 is connected to the light-transmitting dust cover 400.

[0040] In order to achieve a better dust removal effect, the inner diameter of the air blowing tube 110 is larger than the caliber of the transparent dust cover 400, so as to remove dust from the entire dust cover 400. It should be noted that the blowing and dust removal area of ​​the air blowing tube 110 must cover the position where the light from the light emitter 510 passes through the transparent dust cover 400.

[0041] Among them, Figure 1 and Figure 2 As shown, a porous net 120 is provided at the lower end of the air blowing pipe 110. The holes on the porous net 120 can be round holes, waist-shaped holes, etc. Therefore, the porous net 120 can be a perforated plate or a wire mesh plate. The sensing unit 200 and the light emitter 510 are installed on the porous net 120, and in order to prevent the light emitter 510 from being blocked by dust, the air outlet holes on the porous net 120 can blow to the light emitter 510.

[0042] The alarm unit 300 and the dust removal prompt unit 700 are arranged outside the mounting base 100, and can be a light alarm, a sound alarm, or a sound and light alarm at the same time. In addition, the alarm method is not limited to this, and it can also be a remote alarm through the Internet.

[0043] The sensing unit 200, the alarm unit 300, the light transmittance detection unit 500, the dust removal unit 600 and the dust removal prompt unit 700 are all electrically connected to the electric control board 800. Specifically, when the light transmittance detection unit 500 detects that the light transmittance of the light-transmitting dust cover 400 is lower than a preset value, the dust removal unit 600 is controlled to start running through the electric control board 800, and when the dust removal unit 600 reaches a preset running time after starting, the electric control board 800 controls the dust removal unit 600 to stop. And it is determined whether the light transmittance of the light-transmitting dust cover 400 detected by the light transmittance detection unit 500 is lower than a preset value at this time. If it is still lower, the electric control board 800 outputs a dust removal alarm signal to the dust removal prompt unit 700 for alarm.

[0044] In addition, in order to further reduce manual intervention, the dust removal unit 600 can also be started multiple times, that is, it is set so that only after the dust removal unit 600 has worked for multiple times, the transmittance detection unit 500 detects that the transmittance of the translucent dust cover 400 is still lower than the preset value, the dust removal prompt unit 700 will sound an alarm.

[0045] Embodiment 2: A dust removal method for an alarm, comprising:

[0046] Obtain transmittance detection information. Specifically, the transmittance detection information is obtained through detection by the transmittance detection unit 500. Since the transmittance detection unit 500 is provided in plurality, what is actually obtained here is a plurality of transmittance detection information. The transmittance detection information is obtained in real time.

[0047] When the light transmittance detection information is less than a preset value, a dust removal maintenance signal is transmitted to the dust removal unit 600. That is, when the light-transmitting dust cover 400 is covered by pollution and the electrical signal parameters of any one or more light receivers 520 are lower than the preset value, the dust removal unit 600 is controlled by the electric control board 800 to start dust removal.

[0048] When the working time of the dust removal unit 600 reaches the preset operating time, a dust removal stop signal is output to the dust removal unit 600. Specifically, the preset operating time here can be achieved through a timing circuit, that is, after the dust removal unit 600 is started, a delayed shutdown is achieved through the timing circuit.

[0049] When the dust removal unit 600 stops, it is determined again whether the light transmittance detection information is less than a preset value. If so, a dust removal alarm signal is output.

[0050] Specifically, the re-judgment can be achieved here in a variety of ways. In one embodiment, it can be achieved by setting a counter, that is, counting the start and stop of the timing circuit or the dust removal unit 600. When the count is not 0 and the transmittance detection information is less than the preset value, a dust removal alarm signal is output.

[0051] In another embodiment, it can also be realized by a timing circuit, using a series circuit, that is, the alarm signal is delayed when the light transmittance detection information detected for the first time is less than the preset value, wherein the delay time is the same as the preset operation time. When the delay time is reached and the light transmittance detection information is less than the preset value, the alarm signal is output again. At this time, when the alarm signal is output twice, the series circuit is turned on to alarm.

[0052] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An alarm device, comprising a mounting base (100), wherein the mounting base (100) is provided with a sensing unit (200) and an alarm unit (300), wherein: The mounting base (100) is provided with a light-transmitting dust cover (400) arranged outside the sensing unit (200), and a light transmittance detection unit (500) for detecting the light transmittance of the light-transmitting dust cover (400); and the light-transmitting dust cover (400) is provided with an air inlet.

2. An alarm according to claim 1, characterized in that: The transmittance detection unit (500) is provided in at least one form, and the transmittance detection unit (500) comprises a light emitter (510) and a light receiver (520) respectively arranged on both sides of the inside and outside of the light-transmitting dust cover (400), and the light emitter (510) and the light receiver (520) are arranged opposite to each other; or, The light transmittance detection unit (500) comprises a light transmitter (510) and a light receiver (520) both of which are arranged outside the light-transmitting dust cover (400); the light transmitter (510) and the light receiver (520) are arranged opposite to each other, and the light-transmitting dust cover (400) is located between the light transmitter (510) and the light receiver (520).

3. An alarm according to claim 2, characterized in that: The transmittance detection units (500) are arranged in plurality, and the plurality of light receivers (520) are connected in series.

4. An alarm according to claim 2 or 3, characterized in that: The light transmitter (510) is a blue light or green light diode, and the light receiver (520) is a blue light or green light sensor; or, the light transmitter (510) is a laser transmitter, and the light receiver (520) is a laser receiver.

5. An alarm according to claim 1, characterized in that: The light-transmitting dust cover (400) is a light-transmitting silk screen, and the light-transmitting dust cover (400) is detachably connected to the mounting base (100).

6. An alarm according to claim 4, characterized in that: The light-transmitting dust cover (400) is connected to the mounting base (100) via a rotating buckle.

7. An alarm according to claim 1, characterized in that: The mounting base (100) is provided with a dust removal unit (600) for removing dust from the light-transmitting dust cover (400), and when the light transmittance detection unit (500) detects that the light transmittance of the light-transmitting dust cover (400) is lower than a preset value, the dust removal unit (600) is activated.

8. An alarm according to claim 7, characterized in that: The dust removal unit (600) is a dust removal fan, and an air blowing pipe (110) is provided on the mounting base (100), wherein two ends of the air blowing pipe (110) are respectively connected to the dust removal fan and the light-transmitting dust cover (400).

9. An alarm according to claim 8, characterized in that: The inner diameter of the air blowing pipe (110) is larger than the caliber of the light-transmitting dust cover (400).

10. An alarm according to claim 8, characterized in that: The mounting base (100) is provided with a dust removal prompt unit (700); the dust removal unit (600) is preset with an operating time after startup, and stops when the preset operating time is reached; wherein, when the dust removal unit (600) reaches the operating time and the light transmittance detection unit (500) detects that the light transmittance of the light-transmitting dust cover (400) is lower than a preset value, the dust removal prompt unit (700) is controlled to alarm.

Images