Split type intrinsically safe sound-light alarm
Patent Information
- Application Number
- CN202522096872.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
煤矿现有的本安型声光报警器基本能够满足大多数应用场合的使用需要，但在生产实践中发现在煤矿部分应用场景下现有的本安型声光报警器存在明显不足：如煤矿井下用于运送人员的车辆，其在车辆驾驶室内固定安装有现有的本安型声光报警器，当发生警情时本安型声光报警器发出声光报警时，虽然驾驶室内的驾驶员能够及时获知报警信息，但是由于井下环境噪声较大，驾驶员与载人车厢内的乘座人员无法有效沟通，车厢内人员不能在第一时间获知报警信息，存在严重的安全隐患；同时现有本安型声光报警器的蜂鸣器发出的警报声音基本一样，不能根据不同的警情进行准确的语音播报，同时其报警灯3仅能在报警时由正常时的绿色变成红色并按固定频率进行闪烁，而不能根据警情的紧急程度不同相应改变，不利于人们根据不同警情及紧急程度实施相应的应对措施
[0007]本实用新型具有积极的效果：（1）本实用新型通过整体结构的改进，使其在应用于煤矿井下运人车辆上时，驾驶室内人员和载人车厢内的人员均能够在第一时间通过听取语音播报得知报警类型及紧急程度，有利于驾驶员及乘客根据不同的警情在第一时间采取相应的对策，从而提高煤矿井下运人车辆运行及乘员的安全性。（2）本实用新型通过在煤矿运人车辆的驾驶室和车厢内各设置一套话筒和扬声器，从而能够在煤矿噪声较大的环境中有效实现驾驶员与车厢乘员间的及时、清楚、有效的语音对讲沟通，从而能够进一步提高运人车辆运行及乘员的安全性。（3）本实用新型通过在电路板上加设报警灯驱动模块，在电路板主控模块的控制下，针对警情紧急程度的不同，报警灯驱动模块驱动报警灯相应以不同频率的闪烁灯光进行灯光警示，警情等级越高，闪烁频率越快，人们可通过灯光闪烁速度的不同，直观知道警情的程度，从而做出相应的避险动作。（4）本实用新型通过在电路板上在现有开关量输入模块的基础上增设485通信模块和CAN通信模块，从其能够与更多类型或通信规制的上位机及检测设备适配以输入报警信号，提高适用性和性价比。
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Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining safety equipment technology, specifically to a split-type intrinsically safe audible and visual alarm. Background Technology
[0002] Due to the unique working environment of coal mines, especially underground ones, safety measures such as fire prevention, explosion prevention, and toxic gas prevention are crucial. Therefore, numerous safety devices and equipment are deployed both on the surface and underground in coal mines. Among these, intrinsically safe audible and visual alarms, which use sound and flashing lights to alert people and prompt appropriate action, are one of the most commonly used basic safety devices in coal mines. Commonly used intrinsically safe audible and visual alarms in coal mines include... Figure 1 As shown, it mainly consists of a housing 1 and a front cover 2 that is sealed and fixed at the front end of the housing 1. An alarm light 3 that uses flashing light to trigger an alarm and a buzzer that uses sound to trigger an alarm are fixed on the front cover 2. The housing 1 contains a circuit board for main control. The circuit board is connected to the corresponding host computer signal for coal mine safety through an explosion-proof connector 11 on the housing. When an alarm signal is received from the host computer, the existing intrinsically safe audible and visual alarm can use flashing light and the alarm sound emitted by the buzzer to trigger an audible and visual alarm. The existing intrinsically safe audible and visual alarms in coal mines can basically meet the needs of most applications. However, in production practice, it has been found that the existing intrinsically safe audible and visual alarms have significant shortcomings in some application scenarios in coal mines. For example, in vehicles used to transport personnel underground, the existing intrinsically safe audible and visual alarms are fixedly installed in the driver's cab. When an alarm is triggered, although the driver in the cab can be informed of the alarm information in time, due to the high noise level in the underground environment, the driver and passengers in the passenger compartment cannot communicate effectively. The passengers in the passenger compartment cannot be informed of the alarm information immediately, posing a serious safety hazard. At the same time, the buzzers of the existing intrinsically safe audible and visual alarms emit basically the same alarm sound, which cannot accurately broadcast the alarm according to different alarm situations. In addition, the alarm light 3 can only change from green to red and flash at a fixed frequency when an alarm is triggered, and cannot change according to the urgency of the alarm, which is not conducive to people taking appropriate measures according to different alarm situations and urgency levels. Therefore, structural modification and functional upgrade of existing intrinsically safe audible and visual alarms in coal mines is a technical problem that industry professionals urgently need to solve. Utility Model Content
[0003] The purpose of this utility model is to solve the problems existing in the prior art and provide a split-type intrinsically safe audible and visual alarm with improved structure and upgraded function that can meet the needs of different application scenarios in coal mines.
[0004] The technical solution of this utility model is as follows: The split-type intrinsically safe audible and visual alarm of this utility model includes an alarm body, the alarm body including a shell, a front cover sealed and fixed on the front end face of the shell, a circuit board for main control fixed inside the shell, and an alarm light fixed on the front cover and electrically connected to the circuit board. The alarm body further includes a first speaker fixed on the rear end face of the front cover and electrically connected to the circuit board; the split-type intrinsically safe audible and visual alarm also includes a second speaker, a first microphone, and a second microphone, all located outside the alarm body and electrically connected to the circuit board; when the split-type intrinsically safe audible and visual alarm is installed on a coal mine personnel transport vehicle, the alarm body and the first microphone are located in the driver's cab, and the second speaker and second microphone are located inside the passenger compartment.
[0005] A further solution is as follows: the circuit board is equipped with a main control module for main control, a 485 communication module, a CAN communication module, and a switch input module for electrical signal connection between the main control module and the host computer or external monitoring equipment, a voice processing module for processing voice information electrically connected to the main control module, and a power supply module for providing the power required for operation; the first speaker, the second speaker, the first microphone, and the second microphone are all electrically connected to the voice processing module.
[0006] A further solution is to include an alarm light driver module on the aforementioned circuit board, which is electrically connected to the main control module and is used to drive the alarm light to flash at different frequencies under the control of the main control module according to the different levels of urgency of the alarm.
[0007] This utility model has the following positive effects: (1) Through the improvement of the overall structure, when this utility model is applied to a coal mine underground personnel transport vehicle, the personnel in the driver's cab and the personnel in the passenger compartment can immediately learn about the alarm type and urgency by listening to the voice broadcast. This is conducive to the driver and passengers taking corresponding countermeasures according to different alarm situations, thereby improving the safety of the operation of the coal mine underground personnel transport vehicle and the safety of the passengers. (2) By setting up a microphone and a loudspeaker in the driver's cab and the passenger compartment of the coal mine personnel transport vehicle, this utility model can effectively realize timely, clear and effective voice communication between the driver and the passengers in the noisy environment of the coal mine, thereby further improving the safety of the operation of the personnel transport vehicle and the safety of the passengers. (3) By adding an alarm light drive module to the circuit board, under the control of the main control module of the circuit board, the alarm light drive module drives the alarm light to flash at different frequencies according to the different urgency of the alarm situation. The higher the alarm level, the faster the flashing frequency. People can intuitively know the degree of the alarm through the different flashing speed of the light, and thus take corresponding avoidance actions. (4) This utility model adds a 485 communication module and a CAN communication module to the existing switch input module on the circuit board, so that it can be adapted to more types or communication specifications of host computers and detection equipment to input alarm signals, thereby improving applicability and cost performance. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of an intrinsically safe audible and visual alarm commonly used in coal mines in the prior art; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 To remove Figure 2 A schematic diagram of the structure behind the front cover; Figure 4 for Figure 2 A magnified cross-sectional view of the structure after removing the external speakers and the first and second microphones; Figure 5 This is a schematic diagram of the overall circuit structure of this utility model.
[0009] The reference numerals in the above figures are as follows: Housing 1, explosion-proof connector 11, handle 12; front cover 2, sealing ring 21; alarm light 3; circuit board 4; first speaker 5; second speaker 6; first microphone 7; second microphone 8. Detailed Implementation
[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0011] (Example 1) See Figures 2 to 5 The split-type intrinsically safe sound and light alarm in this embodiment mainly consists of an alarm body and a second speaker 6, a first microphone 7 and a second microphone 8 that are separately arranged from the alarm body. The alarm body mainly consists of a housing 1, a front cover 2, an alarm light 3, a circuit board 4 and a first speaker 5.
[0012] The housing 1 is a box-shaped structure with an open front end. Explosion-proof connectors 11 for power and signal lines are provided on both sides of the housing 1. A handle 12 is fixedly provided on the upper side of the housing 1. The front cover 2 is detachably fixed to the front face of the housing 1 by means of a sealing ring 21.
[0013] The alarm light 3 is fixedly mounted on the front cover 2. In this embodiment, although the alarm light 3 itself and its installation method on the front cover 2 are the same as those in the prior art, its working mode is significantly different from that in the prior art, as detailed below.
[0014] The circuit board 4 for main control is fixedly installed inside the housing 1. The circuit board 4 includes a main control module, a 485 communication module, a CAN communication module, and a digital input module for electrical signal connection between the main control module and a host computer or external monitoring equipment, an alarm light driver module for driving the alarm light 3 to flash at different frequencies, a voice processing module for processing voice information, and a power supply module for providing the necessary power. The 485 communication module, CAN communication module, digital input module, alarm light driver module, and voice processing module are all electrically connected to the main control module. Unlike existing technologies where circuit boards typically only have a switch input module for inputting alarm trigger signals, this embodiment adds a 485 communication module and a CAN communication module to the circuit board 4. This allows the split-type intrinsically safe audible and visual alarm of this embodiment to be compatible with more types of host computers and detection devices with different communication standards to input alarm signals. Simultaneously, by adding an alarm light driver module to the circuit board 4, under the control of the main control module, the alarm light driver module can drive the alarm light 3 to flash at different speeds according to the urgency of the alarm, with higher alarm levels resulting in faster flashing frequencies. Furthermore, to address problems in existing technologies, this embodiment adds a voice processing module to the circuit board 4 to handle call and voice alarm functions not present in existing technologies. The modules on the circuit board 4 are electrically connected to corresponding external devices via explosion-proof connectors 11 located on the housing 1. It should be noted that the circuit structure and working principle of each of the main control module, 485 communication module, CAN communication module, digital input module, alarm light driver module and voice processing module on circuit board 4 are mature existing technologies and will not be described in detail.
[0015] The first speaker 5 (commonly known as a loudspeaker) is fixedly mounted on the rear end face of the front cover 2 and electrically connected to the voice processing module. The first speaker 5 is installed in the driver's cab of the coal mine personnel transport vehicle along with the main body of the alarm. The first microphone 7 is electrically connected to the voice processing module and is located outside the main body of the alarm, also within the driver's cab of the coal mine personnel transport vehicle. The second speaker 6 and the second microphone 8 are both electrically connected to the voice processing module and are both located in the passenger compartment of the coal mine personnel transport vehicle. The first speaker 5 and the second speaker 6 have two functions: firstly, to broadcast different alarms sent by the main control module via the voice processing module, so that personnel in the driver's cab and passenger compartment can immediately and intuitively understand the different alarm types and urgency levels, such as "methane over-limit alarm," "carbon monoxide over-limit alarm," and the higher-level "methane power failure alarm." Voice alarm messages such as "carbon monoxide power failure alarm" provide a more immediate and effective response compared to the "beep beep" sound of existing buzzers. Secondly, the first speaker 5 and the second speaker 6, along with the first microphone 7 and the second microphone 8, enable clear communication between the driver and passengers in the cab, facilitating efficient handling of emergencies. For example, when the vehicle arrives at a station or an emergency occurs, the driver can use the first microphone 7 to inform passengers whether to disembark or if an emergency has occurred, ensuring passengers receive the information quickly and clearly. Simultaneously, passengers in the passenger compartment can use the second microphone 8 to promptly inform the driver in case of an unexpected situation, allowing the driver to take appropriate action. This effectively enables timely, clear, and efficient communication between the driver and passengers in the noisy environment of a coal mine, further improving the safety of the vehicle and its occupants.
[0016] The above embodiments are descriptions of specific implementations of this utility model, and not limitations thereof. Those skilled in the art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should be included in the patent protection scope of this utility model.
Claims
1. A split-type intrinsically safe audible and visual alarm, comprising an alarm body, the alarm body including a housing, a front cover sealed and fixedly disposed on the front end face of the housing, a circuit board for main control fixedly disposed inside the housing, and an alarm light fixedly disposed on the front cover and electrically connected to the circuit board, characterized in that: The alarm body also includes a first speaker fixedly mounted on the rear end face of the front cover and electrically connected to the circuit board; the split-type intrinsically safe sound and light alarm also includes a second speaker, a first microphone, and a second microphone mounted on the outside of the alarm body and electrically connected to the circuit board; when the split-type intrinsically safe sound and light alarm is mounted on a coal mine personnel transport vehicle, the alarm body and the first microphone are mounted in the driver's cab, and the second speaker and the second microphone are mounted in the passenger compartment.
2. The split-type intrinsically safe audible and visual alarm device according to claim 1, characterized in that: The circuit board is equipped with a main control module for main control, a 485 communication module, a CAN communication module, and a switch input module for electrical signal connection between the main control module and the host computer or external monitoring equipment, a voice processing module for processing voice information and electrically connected to the main control module, and a power supply module for providing the power required for operation; the first speaker, the second speaker, the first microphone, and the second microphone are all electrically connected to the voice processing module.
3. The split-type intrinsically safe audible and visual alarm device according to claim 2, characterized in that: The circuit board is also equipped with an alarm light drive module that is electrically connected to the main control module and is used to drive the alarm light to flash at different frequencies under the control of the main control module according to the different urgency levels of the alarm.