CN204165972U - A kind of combustible gas probe - Google Patents

Abstract

The utility model discloses a combustible gas detector, which comprises a detector shell, and also includes an acquisition module, a microprocessor, a display module, an alarm module and a bluetooth transmission module; The screen is connected to the microprocessor through the LED display circuit, and the acquisition module, the alarm module and the bluetooth transmission module are all connected to the microprocessor; the bluetooth transmission module has its own microstrip antenna; A switch button is provided, and the switch button circuit is connected to the microprocessor. It can realize short-distance fast data transmission through the Bluetooth transmission module, has high reliability, low power consumption, does not rely on the Internet and other networks, and avoids the impact of uncertain factors such as operator systems or services on data transmission.

Description

A combustible gas detector

technical field

The utility model relates to the field of combustible gas monitoring, in particular to combustible gas monitoring equipment, in particular to a combustible gas detector.

Background technique

Combustible gas detectors can continuously monitor and alarm toxic gases and combustible gases within the lower limit of explosion in industrial environments. Combustible gas alarms are gas leak detection alarms, which are preventive alarms in regional safety monitors. When flammable or toxic gas leaks in an industrial environment, when the gas alarm detects that the gas concentration reaches the critical point of the lower or upper limit of the explosion, the flammable gas alarm will send out an alarm signal to remind the staff to take safety measures and drive the exhaust Wind, cut-off, and sprinkler systems prevent explosions, fires, and poisoning accidents, thereby ensuring safe production and life.

From the perspective of domestic and foreign development, combustible gas detector products are developing in the direction of low power consumption, long life, good stability, advanced technology, digital bus system, multi-function, integration, and high degree of intelligence. The rapid development of gas detectors makes gas detection products coexist with old and new. In the past, combustible gas detectors did not include the function of remote data transmission, and they could not notify the management personnel to deal with them in time when the gas leaked. Now there are data detectors with GPRS or WLAN on the market. The combustible gas detector of the remote transmission module can directly transmit the alarm data to the background monitoring center. But there are still following problems:

1. The problem of "dropping" and "crashing" of functional products such as GPRS and WLAN is relatively serious. Of course, this is not only a problem of the product itself, but also has a lot to do with the operation of the network. Big problems, especially after a "crash", it is generally difficult to restore normal work by itself, requiring manual reset, which is extremely inconvenient; the transmission of product data is subject to the service of the operator, because once the system fails, the integrator or user cannot solve it independently Problem, because there are too many links in the system, it may be the problem of GPRS, WLAN system, or network problem, etc. There are too many unfavorable uncertain factors, so once the operator or network service is not good, it will affect the system quality. will be very big;

2. GPRS and WLAN are billed according to traffic, and the operating costs are relatively high;

3. The after-sales service of GPRS and WLAN is more difficult, because once such modules are damaged, they can only be replaced, and it is impossible to perform component-level maintenance like digital radio stations;

4. Poor real-time performance, especially during holidays when the load on the system will reach a peak (such as SMS and MMS doubling), the system and network will be seriously congested, information will not be smooth, useful information cannot be sent or received in time, and major events will be delayed.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a battery pack with a heat dissipation system with a simple structure and excellent heat dissipation effect.

In view of this, the purpose of this utility model is to provide a combustible gas detector for the problem that the performance and operating status of the existing combustible gas detector are too seriously dependent on the operator, which can transmit data to the background monitoring via bluetooth Center, low cost, high reliability, multi-mode warning, more secure.

The utility model is achieved in that:

A combustible gas detector, including a detector housing, is characterized in that: it also includes an acquisition module, a microprocessor, a display module, an alarm module and a Bluetooth transmission module; the microprocessor is connected with a memory, and the display module includes a display screen, a display screen The microprocessor is connected to the LED display circuit, and the acquisition module, the alarm module and the Bluetooth transmission module are all circuit-connected to the microprocessor; the Bluetooth transmission module comes with a microstrip antenna; A switch button is arranged, and the switch button circuit is connected to the microprocessor.

The above-mentioned combustible gas detector also includes a voice module, the voice module includes a speaker, and the microprocessor sends the signal to the speaker for playback after being processed by a transformer and a capacitor.

In the above combustible gas detector, the acquisition module includes a gas sensor, and a temperature compensation circuit is connected between the gas sensor and the microprocessor.

In the above combustible gas detector, a Bluetooth remote controller is also provided, and the Bluetooth remote controller is adapted to the Bluetooth transmission module.

In the above-mentioned combustible gas detector, the alarm module includes an indicator light and a buzzer, and the front cover of the casing is provided with an indicator light installation hole and a buzzer sound outlet, and the indicator light and the buzzer circuit are connected to the microprocessor.

The beneficial effect of the utility model is to provide a combustible gas detector, which can realize short-distance fast data transmission through the Bluetooth transmission module, has high reliability, low power consumption, does not rely on the Internet and other networks, and avoids the actual existence of operator systems or services. The impact of uncertain factors on data transmission; at the same time, it has the function of sound and light, voice alarm and remote operation function, which eliminates the threat of serious gas leakage or explosion hazard environment to operators, and can remotely warn and operate remotely.

Description of drawings

Figure 1 is a schematic diagram of the structure of the front cover of a combustible gas detector provided by the utility model;

Figure 2 is a side view of the front cover shown in Figure 1;

Fig. 3 is a schematic diagram of the internal structure of the housing under the front cover shown in Fig. 1;

Fig. 4 is the utility model main program flowchart;

Fig. 5 is a block diagram of the internal system of the utility model;

In the picture:

1. Shell; 2. Display installation position; 3. Indicator light installation hole; 4. Buzzer sound hole; 5. Button installation hole; 6. Speaker sound hole; 7. Display screen; 8. Indicator light; 9. Buzzer; 10. Microprocessor; 11. Bluetooth transmission module; 12. Button.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a kind of combustible gas detector, comprises detector housing 1, in conjunction with Figure 2 and Figure 3, also includes acquisition module, microprocessor, display module, alarm module and bluetooth transmission module; Microprocessing The display module is connected with a memory; the display module includes a display screen 7, the display screen 7 is arranged at the display screen installation position 2 on the front cover of the shell, the display screen 7 is connected to the microprocessor 10 through the LED display circuit, the acquisition module includes a gas sensor, and the gas sensor A temperature compensation circuit is connected with the microprocessor; the alarm module includes an indicator light 8 and a buzzer 9, the front cover of the housing 1 is provided with an indicator light installation hole 3 and a buzzer sound hole 4, the indicator light 8 and the buzzer The buzzer 9 circuit is connected to the microprocessor 10; the bluetooth transmission module 11 circuit is connected to the microprocessor 10; the bluetooth transmission module 11 is adapted to the external bluetooth remote controller of the combustible gas detector; the bluetooth transmission module has its own microstrip antenna; The shell is provided with a power plug, and the power supply supplies power to the whole machine; the shell is provided with a switch button 5, and the switch button 5 is connected to the microprocessor 10 in circuit.

It also includes a voice module, the voice module includes a loudspeaker, and the loudspeaker is installed corresponding to the sound outlet 6 of the loudspeaker, and the microprocessor 10 sends the signal to the loudspeaker for voice playback after being processed by the transformer and capacitor of the circuit.

When the utility model is used, it can be used as a monitoring terminal, a transfer machine and a remote monitoring center to form a monitoring system. The combustible gas detector provided by the utility model is used to monitor the gas leakage state in explosion-proof environments (such as user kitchens, door stations, etc.), and It will give sound, light and voice warnings according to the set leakage alarm limit, and then transmit the detected data information to the transfer machine with related software through Bluetooth. The transfer machine is a mobile phone, PAD or computer and other equipment. The hardware equipment of the detector is connected to the server to obtain a smoother data flow. The data obtained by the transfer machine, together with the GPS positioning information determined by the transfer machine, is uploaded to the remote monitoring center. See the real-time monitoring status, and remotely monitor the explosion-proof environment, so as to detect and deal with it as soon as possible, and avoid major casualties.

The main program flow chart shown in Figure 4 combined with the system block diagram shown in Figure 5, press the device power switch key, the utility model combustible gas detector immediately enters the preheating state, the power supply and function indicator light is on, and the normal preheating time for 120s. After the preheating state is completed, it enters the normal monitoring state, the function indicator light is off, and the power indicator light is on.

When in use, the gas sensor circuit collects the analog signal of the gas concentration of methane in the surrounding gas environment, performs temperature compensation through the temperature compensation circuit, and then through the internal A\D conversion circuit, outputs a digital signal to the microprocessor, and the microprocessor converts the methane The concentration value is sent to the LED display circuit to display on the display screen, and is compared with the set concentration value according to the current concentration value. When the CH4 gas concentration in the environment exceeds the alarm concentration, the alarm indicator light is on, and the buzzer emits a continuous alarm sound. When the concentration exceeds the alarm concentration alarm, the detector automatically turns on the Bluetooth transmission function, communicates with the transfer machine Bluetooth, and transmits the alarm data to the background monitoring center, and the monitoring center personnel can see the real-time status of the monitoring environment through the upper computer leakage monitoring and early warning system software . Remote monitoring of explosion-proof environments. So as to achieve early detection and early treatment of gas leakage in the early stage, and avoid the occurrence of major casualties.

When the combustible gas detector of the utility model needs to transmit data through the bluetooth transmission module, the microprocessor first turns on the power supply of the bluetooth transmission module. After the Bluetooth transmission module is powered on and initialized normally, it will enter the working mode of the slave module, and will automatically send broadcast signals. After receiving the signals, the transfer machine will automatically scan and establish a connection. After the connection is normal, the transfer machine sends a copy command, and the combustible gas detector of the utility model sends the 24-hour gas concentration data collected from the memory to the transfer device according to the communication protocol format. After the data transmission is completed, the transfer machine sends a disconnection command to disconnect from the combustible gas detector, and the microprocessor disconnects the power supply of the Bluetooth transmission module.

When the gas leaks and exceeds the alarm setting value of the combustible gas detector, the combustible gas detector will send out an audible and visual alarm, and at the same time, the voice simulates the human voice to broadcast the monitoring data information, and automatically turns on the Bluetooth function module to transmit the alarm data to the family in real time Bluetooth housekeeper and background monitoring center.

When the utility model is used as a monitoring terminal far away from the operator or the explosion-proof environment is not conducive to the operator's entry, a Bluetooth remote control can be used to establish a connection with the monitoring terminal through the Bluetooth transmission module to perform real-time control of the monitoring terminal, such as forced command voice The module rebroadcasts the on-site monitoring data, judges the risk index, etc., without requiring the operator to enter the explosion-proof environment, and eliminates the threat of the environment to personal safety.

Acquisition of measurement and control field data encounters a large amount of electromagnetic interference, and the Bluetooth transmission module adopts frequency hopping spread spectrum technology, so it can effectively improve the security and anti-interference ability of data transmission, without laying cables, reducing the cost of environmental transformation, convenient The work of data acquisition personnel can be realized, and measurement and control data can be transmitted from various angles, but the networking between multiple measurement and control instruments and equipment can be realized, and centralized monitoring and control can be performed at the edge.

The utility model has been introduced in detail above. In this paper, the principles and implementation methods of the present utility model are described, and the above description is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (5)

1. A combustible gas detector, comprising a detector housing, is characterized in that: it also includes an acquisition module, a microprocessor, a display module, an alarm module and a bluetooth transmission module; the microprocessor is connected with a memory, and the display module includes a display screen, The display screen is connected to the microprocessor through the LED display circuit, and the acquisition module, the alarm module and the bluetooth transmission module are all connected to the microprocessor; the bluetooth transmission module has its own microstrip antenna; A switch key is arranged on the top, and the switch key circuit is connected with the microprocessor. 2. A combustible gas detector according to claim 1, characterized in that it also includes a voice module, the voice module includes a speaker, and the microprocessor sends the signal to the speaker for playback after being processed by a transformer and a capacitor. 3. A combustible gas detector according to claim 2, wherein the acquisition module includes a gas sensor, and a temperature compensation circuit is connected between the gas sensor and the microprocessor. 4. A combustible gas detector according to claim 3, characterized in that: a Bluetooth remote controller is also provided, and the Bluetooth remote controller is adapted to the Bluetooth transmission module. 5. A combustible gas detector according to any one of claims 1-4, characterized in that: the alarm module includes an indicator light and a buzzer, and the front cover of the housing is provided with an installation hole for the indicator light and a buzzer outlet. The sound hole, indicator lights and buzzer circuits are connected to the microprocessor.