Method for using different gas sensors of same type on same gas alarm

Abstract

The invention discloses a method for compatibly using different gas sensors of the same type on the same gas alarm. The method is low in maintenance cost and convenient to operate. Comprising the following steps: 1) replacing the old gas sensor with a new gas sensor; (2) correlating and recording the archive information of the gas alarm and the new gas sensor at the cloud; 3) the cloud calculates the ratio of the alarm voltage value of the initially installed gas sensor and the alarm voltage value of the new gas sensor recorded in the archive information, and sends the ratio to the gas alarm; and 4) when the calculated value obtained by multiplying the real-time voltage value of the alarm data acquisition end of the gas alarm by the ratio is greater than or equal to the alarm voltage value of the initially installed gas sensor, the gas alarm gives an alarm. Under the condition that the whole gas alarm is not replaced, a new gas sensor can be replaced in time, so that the maintenance cost is greatly reduced, installation and replacement are simple, popularization and use are easy, a user is effectively promoted to frequently replace the new gas sensor, and potential safety hazards are thoroughly eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for using a combustible gas alarm, in particular to a method for improving gas sensor compatibility on the same combustible gas alarm. BACKGROUND

[0002] The gas alarm in the prior art includes a combustible gas alarm and a harmful / toxic gas alarm, which issues an alarm signal when the concentration of combustible gas or toxic gas exceeds the set pre-alarm concentration. In use, water vapor or oil smoke in the ambient air will adhere to the detection surface of the gas sensor over time, resulting in fewer gas molecules being received by the gas sensor after a gas leak occurs, thereby failing to achieve the pre-alarm purpose. In the prior art, even if the gas sensors are produced in the same batch, the characteristics of each gas sensor will be inconsistent, resulting in that when the manufacturer installs the gas alarm, even if different gas sensors of the same batch are installed, the alarm signal trigger points (hereinafter referred to as alarm voltage values) of each gas alarm will be different. Therefore, in the prior art, the manufacturer will install and debug different gas alarms according to the different alarm voltage values, which means that the gas sensors in each different gas alarm cannot be directly interchanged, and the entire gas alarm needs to be replaced. This will increase the use cost of the user, resulting in a decrease in the use of gas alarms by the user in daily life, and causing a large safety hazard. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a method for using different gas sensors of the same type on the same gas alarm, which has low maintenance cost and is easy to operate.

[0004] To solve the above technical problems, the present application adopts the following scheme:

[0005] The method for using different gas sensors of the same type on the same gas alarm of the present application comprises the following steps:

[0006] 1) removing the gas sensor to be replaced from the installed gas alarm, and installing a new gas sensor on the gas alarm;

[0007] 2) scanning the electronic information tag recorded on the gas alarm and the new gas sensor with a mobile terminal, and associating and archiving the file information of the gas alarm and the new gas sensor in the cloud, including product number, product type, manufacturer information, alarm history record, replacement time information, and gas sensor parameters;

[0008] 3) The cloud calculates the ratio of the alarm voltage value of the newly installed gas sensor and the alarm voltage value of the new gas sensor under the same gas alarm concentration based on the above-mentioned archive information, sends it to the gas alarm, and records it in its memory;

[0009] 4) When the calculated value obtained by multiplying the real-time voltage value of the alarm data acquisition terminal of the gas alarm by the ratio is greater than or equal to the alarm voltage value of the initially installed gas sensor, the gas alarm will sound an alarm.

[0010] The electronic information label is a QR code, bar code, Arabic numeral code or color dot label.

[0011] The gas alarm is a combustible gas alarm, a harmful / toxic gas alarm, a water gas alarm or a liquefied petroleum gas alarm.

[0012] The gas sensor is an N-type sensor, preferably a tin oxide sensor, a zinc oxide sensor, an iron oxide sensor or an indium oxide sensor.

[0013] The gas alarm of the present invention includes a shell, a circuit control board arranged in the shell, a gas sensor connected to the circuit control board, and an electronic information tag arranged on the gas sensor. It is characterized in that the gas sensor is installed on the sensor base arranged on the circuit control board in a plug-and-play manner. When the gas sensor needs to be replaced with a new one, the operation is performed according to the method described in the present invention.

[0014] The circuit control board is provided with a Bluetooth receiving module, and the Bluetooth receiving module is paired with an application program of the mobile terminal through wireless transmission.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By setting a sensor base on the circuit control board, plug-and-play can be achieved when different gas sensors of the same type need to be replaced; 2. A mobile terminal is used to scan the electronic information tags recorded on the gas alarm and the gas sensor to be updated to obtain relevant information and send it to the cloud for related filing, and the cloud sends the ratio of the alarm voltage value of the initially installed gas sensor to the alarm voltage value of the new gas sensor to the memory in the gas alarm, thereby achieving compatible use of the same type but different gas sensors under the same gas alarm; 3. Without replacing the entire gas alarm, a new gas sensor can be replaced in time, thereby greatly reducing maintenance costs, simple installation and replacement, and easy popularization and use, thereby effectively prompting users to frequently replace new gas sensors and completely eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an outline diagram of the gas alarm of the present invention.

[0017] Figure 2 is Figure 1 the exploded view of the gas alarm.

[0018] Figure 3 is the flow chart of the method for using the present application.

[0019] Reference signs

[0020] The shell 1, the upper cover 11, the lower cover 12, the buckle cover 13, the circuit control board 2, the sensor base 21, the new gas sensor 22. DETAILED DESCRIPTION

[0021] The technical problem to be solved by the present application is that the new gas sensor 22 can be replaced in time without replacing the whole gas alarm, and the new gas sensor 22 belongs to the same type but different gas sensors as the initial installed gas sensor (the gas sensor configured when the gas alarm is initially installed).

[0022] The same type means that the materials of the gas sensors are the same, and the target gas components (such as methane, gas, liquefied petroleum gas or harmful gas) detected are the same, and the different means that different sensors produced by the same manufacturer and the same batch, or the same type sensors produced by different manufacturers.

[0023] The voltage value change trend collected by the alarm data collection end of such gas sensor is the same when the concentration of the leaked gas changes, and the voltage values collected by different sensors at the same concentration of the leaked gas may be different, and the voltage values collected by different gas sensors are different (that is, the alarm voltage values of different gas sensors are different) when the preset alarm concentration is reached, that is, the technical problem to be solved by the present application is how to compatibly use different alarm voltage gas sensors on the same gas alarm when the new gas sensor needs to be replaced.

[0024] Firstly, the present application mainly includes the following components

[0025] 1, the shell 1 ( Figure 1 )

[0026] It is made of plastic material, including the upper cover 11 and the lower cover 12, a window is arranged on the upper cover 11, the window is provided with a buckle cover 13, the buckle cover 13 is provided with a plurality of mesh holes, the buckle cover 13 is opened, the gas sensor to be replaced can be inserted into the shell 1 through the window and installed on the sensor base 21 arranged on the circuit control board 2, the window position is preferably on the front or side of the shell 1.

[0027] 2, the circuit control board 2

[0028] It is electrically connected with the electromagnetic valve arranged on the gas pipeline through the wire.

[0029] 3. The gas sensor of claim 1 or 2, wherein the sensor is a semiconductor sensor. Figure 2 )

[0030] The gas sensor of the present application is preferably a semiconductor sensor that can react to natural gas, liquefied petroleum gas and coal gas, and express a warning signal in the form of a change in voltage at the voltage collection terminal of the circuit after the resistance value changes.

[0031] The gas sensor of the present application is preferably an N-type sensor, i.e., the resistance value of the gas sensor decreases when it encounters a reaction gas, and can be a tin oxide sensor, a zinc oxide sensor, an iron oxide sensor or an indium oxide sensor.

[0032] II. As shown in the method for using different gas sensors of the same type on the same gas alarm (hereinafter referred to as the method) of the present application comprises the following steps: Figure 3

[0033] 1) When the detection plate on the gas alarm is contaminated and cannot be used normally, the prior art is to replace the entire gas alarm together with the contaminated gas sensor, which has the disadvantage of high maintenance cost; in the present application, a sensor base 21 is arranged on the circuit control board 2, so that the replacement can be completed by directly disassembling and assembling the gas sensor in a plug-and-play manner.

[0034] 2) The gas alarm and the new gas sensor 22 to be replaced are matched in information, preferably in the following two ways:

[0035] a. The electronic information tag recorded on the gas alarm and the new gas sensor 22 to be replaced is scanned by a mobile terminal, and the file information obtained by scanning is matched directly in the cloud.

[0036] b. An encoding tag with a factory code is arranged on the new gas sensor 22 to be replaced, the electronic information tag recorded on the gas alarm is scanned by a mobile terminal, and the content of the encoding tag is input in the interface popped up, at this time the mobile terminal can obtain the file information of the gas sensor corresponding to the encoding tag from the cloud, and then match the file information with the gas alarm through the Internet of Things.

[0037] The file information includes product number, product type, manufacturer information, alarm history record, replacement time information, alarm voltage value of the gas sensor, etc. The electronic information tag is a two-dimensional code, a bar code, an Arabic numeral code or a color point tag.

[0038] The file information is transmitted to the cloud through the Bluetooth transceiver module or the wireless transmission module arranged on the circuit control board 2 and the Internet of Things.

[0039] ​3) The cloud will calculate the ratio of the alarm voltage value of the initial gas sensor corresponding to the same gas alarm concentration recorded in the above file information and the alarm voltage value of the new gas sensor 22, send it to the gas alarm, and record it in its memory. The voltage value obtained by the alarm data acquisition end is illustrated as follows:

[0040] The alarm voltage value of the initial gas sensor is 2 volts, and the alarm voltage value detected by the new gas sensor 22 before leaving the factory is 3 volts. The ratio is 2 / 3. When the new gas sensor 22 is installed on the gas alarm, the real voltage value collected by the alarm data acquisition end is 2.7 volts as the concentration of the leaked gas changes. Then, the MCU of the gas alarm will not trigger the alarm according to the voltage value calculated by the above ratio, which is 2.7*2 / 3=1.8 volts <2 volts.

[0041] Note: The alarm voltage value detected by the new gas sensor 22 is detected at normal temperature and standard atmospheric pressure, under the same leaked gas concentration and the same standard circuit board as the circuit control board 2 of the gas alarm.

Claims

1. A method for using different gas sensors of the same type on the same gas alarm, comprising the following steps: 1) removing the gas sensor to be replaced from the gas alarm installed on site, and installing a new gas sensor (22) on the gas alarm; 2) Scanning the electronic information tags recorded on the gas alarm and the new gas sensor (22) with a mobile terminal, and associating and filing archival information of the gas alarm and the new gas sensor (22) including product number, product type, manufacturer information, alarm history record, replacement time information, and gas sensor parameters in the cloud; 3) The cloud calculates the ratio of the alarm voltage value of the newly installed gas sensor (22) under the same gas alarm concentration according to the above-mentioned archive information, sends it to the gas alarm, and records it in its memory; 4) When the calculated value obtained by multiplying the real-time voltage value of the alarm data acquisition terminal of the gas alarm by the ratio is greater than or equal to the alarm voltage value of the initially installed gas sensor, the gas alarm will sound an alarm.

2. The method according to claim 1, wherein: The electronic information label is a QR code, bar code, Arabic numeral code or color dot label.

3. The method according to claim 2, wherein: The gas alarm is a combustible gas alarm, a harmful / toxic gas alarm, a water gas alarm or a liquefied petroleum gas alarm.

4. The method according to claim 2, wherein: The gas sensor is an N-type sensor, preferably a tin oxide sensor, a zinc oxide sensor, an iron oxide sensor or an indium oxide sensor.

5. A gas alarm comprising a housing (1), a circuit control board (2) disposed in the housing (1), a gas sensor connected to the circuit control board (2), and an electronic information tag disposed on the gas sensor, characterized in that: The gas sensor is installed on a sensor base (21) provided on a circuit control board (2) in a plug-and-play manner. When the gas sensor needs to be replaced with a new one, the method according to any one of claims 1 to 4 is used.

6. The gas alarm according to claim 5, characterized in that: The circuit control board (2) is provided with a Bluetooth receiving module, and the Bluetooth receiving module is paired with an application program of the mobile terminal through wireless transmission.

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