KR20030075450A - Apparatus for alarming Gas leakage - Google Patents

Abstract

PURPOSE: An apparatus for alarming a gas leaking is provided to remove a data distortion due to the contact resistance and the noise by transmitting and receiving data between a search portion and a reception portion. CONSTITUTION: An apparatus for alarming gas leaking includes the first micro computer(15), an address setup portion(16), a communication interface portion, the second micro computer(25), and a volume setup portion(24). The first micro computer(15) is used for calculating the density of the leaked gas according to an output of a sensor, storing the calculated result, and outputting the address information and the stored result according to a request signal. The address setup portion(16) sets up a peculiar address of the first micro computer(15). The communication interface portion transmits the address information and the calculated result of the first micro computer(15) to the outside through a network or a call signal to the first micro computer(15) through the network. The second micro computer(25) transmits the call signal to the first micro computer(15) and extracts the address information and the gas leakage information from a received response signal. The volume setup portion(24) sets up a volume of the first micro computer(15).

Description

Apparatus for alarming gas leakage

The present invention relates to a gas leak alarm device.

Conventional gas leakage alarm is composed of a detection unit for detecting the gas largely, and a receiving unit for indicating the concentration of the gas in response to the signal of the detection unit, the signal transmission method between the detection unit and the receiving unit is a voltage using a wire (transmission line) or Current delivery was in operation.

However, when the detector and receiver are separated from each other over a long distance, the resistance of the line itself increases as the length of the transmission line increases, thereby reducing the magnitude of the signal transmitted from the detector to the receiver, making it impossible to accurately display the gas concentration. In addition, the concentration of the display unit should be reset, and the contact resistance is generated due to the rust generated in the terminal due to foreign matter such as moisture and dust after a long time, and the noise is introduced, so that the signal of the detector is distorted and transmitted to the receiver.

In addition, the detection unit and the receiving unit has a problem in that the signal type is a current or constant voltage, so that the signal must be continuously transmitted and received, so that one-to-one matching is always configured.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is possible to accurately display the gas concentration by improving the limitations of the voltage and current transmission method between the detector and the receiver, and one receiver and one or more detections. It is an object of the present invention to provide a gas leakage alarm that enables the interconnection of the parts.

1 is a block diagram of a gas leakage warning apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of a first microcomputer in the detector in the gas leakage alarm device of FIG. 1.

3 is a view illustrating an operation of a second microcomputer in a receiver in the gas leakage alarm device of FIG. 1.

4 is a block diagram of a gas leakage warning apparatus according to a second embodiment of the present invention;

FIG. 5 is a flowchart illustrating an operation of the first microcomputer in the detector in the gas leakage alarm device of FIG. 4.

FIG. 6 is a flowchart illustrating an operation of a second microcomputer in a receiver in the gas leakage alarm device of FIG. 4.

<Explanation of symbols for main parts of the drawings>

10 detection unit 11: power unit

12 sensor unit 13 amplification / filter unit

14: trouble check unit 15: first microcomputer unit

16: address setting unit 17: first communication unit

20: receiver 21: power unit

22: second communication unit 23: switch input unit

24: detection unit quantity setting unit 25: the second microcomputer unit

26: external output unit 27: concentration display unit

28: lamp display unit 30: detection unit

31: power supply unit 32: sensor unit

33: amplification / filter section 34: fault check section

35: first microcomputer 36: first communication unit

40: receiver 41: power unit

42: second communication unit 43: switch input unit

44: second microcomputer 45: external output unit

46: concentration display portion 47: lamp display portion

Gas leak warning device according to a first embodiment of the present invention for achieving this object includes a detection sensor for detecting the leakage of gas and an alarm unit for generating an alarm when the leakage of gas from the detection sensor is detected. In the gas leakage alarm device, the leakage concentration of the gas is calculated according to the output of the detection sensor, and the calculation result is stored. Outputting the first microcomputer unit, an address setting unit for setting a unique address to the first microcomputer unit, address information and arithmetic result output from the first microcomputer unit, or receiving a request signal received through the network. At least one or more communication interface through the communication interface unit for transmitting to the first microcomputer unit; A second microcomputer unit for transmitting a call signal having at least one address signal to the first microcomputer unit, extracting address information and gas leakage information from the response signal received corresponding to the call signal, and displaying the same through the alarm unit; And a quantity setting section for setting the quantity of the first microcomputer section communicating with the microcomputer through the communication interface section.

In addition, the gas leakage alarm device according to a second embodiment of the present invention for achieving the above object, the detection sensor for detecting the leakage of gas and the alarm unit for generating an alarm when the leakage of gas from the detection sensor is detected. A gas leakage warning device, comprising: calculating a gas leakage concentration according to an output of a detection sensor, storing the calculation result, and outputting the stored calculation result when a call signal requesting the calculation result is received. 1 a microcomputer unit, a communication interface unit which transmits the calculation result outputted from the first microcomputer unit through a network, or transmits the call signal received through the network to a first microcomputer unit, and the first microcomputer through a communication interface unit. The call signal is transmitted to the unit, and the gas leakage information is extracted from the response signal received corresponding to the call signal. It is configured to include a second microcomputer unit to display through.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a gas leakage warning apparatus according to a first embodiment of the present invention.

Referring to FIG. 1, a gas leak alarm apparatus according to the present invention is largely used to detect whether a gas leaks by using a sensor, or detects whether the sensor is normally operated and detects an operation state in which a microcomputer is built (10). And a receiver 20 which transmits a call signal to the detector 10 to extract and display gas leakage information and operation information of the detector from the signal received from the detector 10. One receiver 20 may communicate with a plurality of detectors 10 to display gas leakage information detected by each detector.

First, the configuration of the detector 10 will be described.

The detector 10 includes a sensor unit 12 that detects gas in the atmosphere and converts the gas into an electrical signal, an amplification / filter unit 13 that amplifies the signal of the sensor unit 12 and removes noise components; The fault check unit 14 which checks the failure of the sensor unit 12 and the signal of the amplifier / filter unit 13 are received, and the analog signal is converted into digital data to calculate gas concentration data, and the fault check unit The first microcomputer unit 15 analyzing the failure of the sensor through 14 and the first communication unit for transmitting and receiving the wired or wireless communication data with the receiving unit 20 under the control of the first microcomputer unit 15. (17), when one receiver 20 and a plurality of detectors 10 are connected at the same time, an address setting unit 16 for setting an address for each detector, and a circuit part different from the sensor unit 12 It is composed of a power supply unit 11 for supplying power to each.

The first microcomputer unit 15 receives a signal from the amplifier / filter unit 13 and converts the analog signal into digital data, and converts the converted data into gas concentration data by comparing the converted data with previously stored data. At the same time, the state of the sensor is comprehensively received by the signal of the fault check unit 14, and the result is transmitted to the receiver 20 through the first communication unit 17. On the other hand, the output of the address setting unit 16 is referenced to prepare for the call signal of the receiving unit 20.

Looking at the configuration of the receiver 20, the receiver 20 receives a wired or wireless communication signal transmitted from the detector 10, or a second communication unit 22 for transmitting a call signal to the detector 10, and the second A second signal for receiving a signal input through the communication unit 22 and generating a control signal for checking and displaying the state of each detection unit 10 and a control signal for performing an operation such as a test, a buzzer stop, and an alarm return. The microcomputer 25, a switch input unit 23 for performing various tests, a buzzer stop when an alarm occurs, an alarm return when an alarm signal is released, and a plurality of detection units in one receiver 20 When 10 is interlocked, a signal such as a current, a contact point, a sound, and the like is controlled by the detection unit quantity setting unit 24 and the second microcomputer unit 25 which set the quantity of the detection unit 10 to be interlocked. The detection unit 10 under the control of the external output unit 26 and the second microcomputer unit 25 for outputting. Concentration display unit 27 for displaying the amount of gas detected in the) and the lamp display unit 28 for displaying the current receiver status, such as alarm, buzzer stop, test.

The detection unit quantity setting unit 24, when a plurality of detection unit 10 is linked to one receiver 20, at the time of communication between each detector 10 and the receiver 20, each detector ( When 10) transmits data at the same time, the data collides, and therefore, the receiver 20 cannot confirm the concentration data for each detector 10, so that the quantity of the detector 10 currently connected to the receiver 20 is determined. Will be set. The second microcomputer 25 sequentially calls the detector 10 with reference to the detector quantity setting unit 24 and receives data transmitted from the detector 10 accordingly.

The second microcomputer 25 receives a signal input through the second communication unit 22 to check the state of each detection unit 10 and uses the external output unit 26, the concentration display unit 27, and the lamp display unit. Each control unit 28 receives the signal of the switch input unit 23 to perform an operation such as test, buzzer stop, and alarm return.

As described above, in the present invention, wired or wireless communication units 17 and 22 are respectively installed in the detector 10 for detecting the gas and the receiver 20 for displaying the gas concentration, and the detector 10 and the receiver 20 are respectively provided. The signal transmission method between) is processed by the data communication method.

That is, by processing the signal transmission method between the detection unit 10 and the receiver 20 in a data communication method, accurate data transmission is possible, and long-distance transmission is possible.

In addition, since data is transmitted by a communication method, a plurality of detection units 10 may be installed in parallel, and the data may be transmitted and received and processed by interworking with one receiver. That is, in the conventional case, although the detector 10 and the receiver 20 are matched one-to-one, it is also possible to connect the plurality of detectors 10 to one receiver 20 in parallel by employing a communication method. .

When the plurality of detectors 10 are installed in parallel, the receiver 20 sequentially calls the detectors 10 and sequentially receives data from the detectors 10 corresponding to the calls.

The first communication unit 17 and the second communication unit 22 which are in charge of the communication between the detection unit 10 and the reception unit 20 are capable of wired communication and wireless communication, and are typically RS 485 (RS). -485) can be used, but an additional amplifier can be used to cover more than a few kilometers. However, when using DTMF communication, it can operate stably at several kilometers without an amplifier.

In case of applying wireless communication, it is possible to use packet communication method. Since there is no separate transmission line, it is easy to install. By using packet communication method, there is little influence of malfunction due to data damage.

FIG. 2 is a flowchart illustrating an operation of the first microcomputer in the detector in the gas detector illustrated in FIG. 1.

First, when the power is turned on, the first microcomputer 15 performs initialization (S1). When the initialization is performed, the first microcomputer unit 15 reads the value set in the address setting unit 16 and stores the address in the memory (S2). Then, the sensor failure check is performed through the failure check unit 14 (S3) and it is determined whether the sensor unit 12 has failed according to the output value of the failure check unit 14 (S4). If the result of the determination is not a malfunction, the data of the sensor unit 12 is read (S5) and the concentration data is calculated by comparing the read data with a predetermined reference value (S6). When the concentration data is calculated, the calculated concentration data is stored as transmission data (S7). On the other hand, if the sensor unit 12 is determined to be a failure, the data indicating that the failure in the transmission data is stored as the transmission data (S8).

Next, it is determined whether a call signal is received from the receiving unit 20 (S9). When the call signal is received, address information is extracted from the call signal (S10), and it is determined whether the address value called from the call signal and the address read from the address setting unit 16 are the same (S11). If the address of the call signal received from the receiving unit and the address read from the address setting unit are the same, the stored transmission data is transmitted to the receiving unit 20 through the first communication unit 17 (S12). Accordingly, when the sensor unit 12 operates normally, the gas concentration data detected through the sensor unit 20 is transmitted to the receiving unit 20 together with the address information assigned to the detecting unit 20, and the sensor unit In the case where 12 fails, data indicating that the sensor 12 has failed is transmitted to the receiving unit 20 together with address information.

3 is a flowchart illustrating an operation of a second microcomputer in a receiver in the gas detector illustrated in FIG. 1.

First, when the power is turned on, the second microcomputer 25 performs initialization (S21). When the initialization is performed, the value set in the detector quantity setting unit 24 is read (S22). When the value of the detector quantity setting unit 24 is input, the call signal is transmitted to the detector 10 accordingly (S23). The call signal carries the address information of the detector 10 corresponding to each detector 10 to be called. Therefore, when there are a plurality of detection units 10 to be called, the call signals carrying the corresponding address information are sequentially transmitted through the second communication unit 22.

After transmitting the call signal in this way, it is determined whether or not a response signal is received from the detection unit 10 accordingly (S24). As a result of the determination, if there is a response signal, the number information (address information) of the detection unit is determined from the response signal. ) And gas data are extracted (S25). The extracted number information and gas data information of the detection unit are displayed on the external output unit, the concentration display unit, and the lamp display unit control (S26). If the sensor unit 12 has a failure, the gas data information is information indicating the failure. On the other hand, when a response signal is not received from the detection unit 10 even after a predetermined time has elapsed since the call signal is transmitted to the detection unit 10, an error alert is output (S27).

4 is a block diagram of a gas leakage warning apparatus according to a second embodiment of the present invention.

Referring to FIG. 4, the gas leak alarm apparatus according to the second embodiment of the present invention has a built-in microcomputer for detecting whether the gas is leaked using a sensor or detecting whether the sensor is normally operated. The receiver 30 which transmits a call signal to the detector 30 and the detector 30 to extract and display the gas leakage information and the operation information of the detector 30 from the signal received from the detector 30. It is composed of

The configuration and difference of the first embodiment is that one receiver 40 communicates with one detector 30 to display gas leakage information detected by the detector 30.

First, the configuration of the detector 30 will be described.

The detection unit 30 includes a sensor unit 32 that detects gas in the atmosphere and converts the gas into an electrical signal, an amplification / filter unit 33 that amplifies the signal of the sensor unit 32 and removes noise components; Receives the signals from the fault check unit 34 and the amplification / filter unit 33 to check the failure of the sensor unit 32, converts analog signals into digital data, calculates and stores gas concentration data, and A first microcomputer 35 analyzing the failure of the sensor through the checker 34 and a second microcomputer 35 for transmitting and receiving data to or from the receiver 40 under control of the first microcomputer 35. 1 is comprised from the communication part 36 and the power supply part 31 for supplying power to the sensor part 32 and another circuit part, respectively.

The first microcomputer 35 receives the signal from the amplifier / filter unit 33 and converts the analog signal into digital data, and converts the converted data into gas concentration data by comparing the converted data with previously stored data. At the same time, the fault check unit 34 receives a signal and analyzes the state of the sensor comprehensively, calculates the gas leakage concentration, stores the operation result, and receives a call signal requesting the operation result from the receiver 40. In this case, the stored operation result is transmitted to the receiver 40 through the first communication unit 36.

Looking at the configuration of the receiver 40, the receiver 40 receives a wired or wireless communication signal transmitted from the detector 30, or a second communication unit 42 for transmitting a call signal to the detector 30, and the second A second microcomputer that receives a signal input through the communication unit 42 and generates a control signal for checking and displaying the state of the detection unit 30 and a control signal for performing an operation such as test, buzzer stop, and alarm return. Under the control of the unit 44, the switch input unit 43 for performing various tests in the receiver 40, buzzer stop when an alarm occurs, alarm return when an alarm signal is released, and the second microcomputer unit 44 under current control. External output unit 45 for outputting a signal such as a contact point, sound, etc., and concentration display unit 46 for displaying the amount of gas detected by the detection unit 30 under the control of the second microcomputer unit 44. Lamp for displaying current receiver status such as alarm, buzzer stop, test It is comprised by the display part 47.

The second microcomputer 44 receives the signal input through the second communication unit 42 to check the state of the detection unit 30 and uses the external output unit 45, the concentration display unit 46, and the lamp display unit to check the state of the detection unit 30. 47), respectively, and receives a signal from the switch input unit 43 to perform an operation such as test, buzzer stop, and alarm return.

As described above, in the second embodiment of the present invention, wired or wireless communication units 36 and 42 are installed in the detector 30 for detecting gas and the receiver 40 for displaying gas concentration, respectively. The signal transmission method between the 30 and the receiver 40 is processed as a data communication method. Detailed description of the data communication method has been described in the first embodiment and will be omitted.

FIG. 5 is a flowchart illustrating an operation of the first microcomputer in the detector in the gas detector illustrated in FIG. 4.

First, when the power is turned on, the first microcomputer 35 performs initialization (S31). When the initialization is performed, the first microcomputer unit 35 performs a sensor failure check through the failure check unit 34 (S32) and determines whether the sensor unit 32 has failed according to the output value of the failure check unit 34. (S33). If the result of the determination is not a malfunction, the data of the sensor unit 32 is read (S34) and the concentration data is calculated by comparing the read data with a predetermined reference value (S35). When the concentration data is calculated, the calculated concentration data is stored as transmission data (S36). On the other hand, if it is determined that the sensor unit 32 is a failure, data indicating that a failure has occurred in the transmission data is stored as transmission data (S37).

Next, it is determined whether a call signal is received from the receiver 40 (S38). When the call signal is received, the stored transmission data is transmitted to the receiving unit 40 through the first communication unit 36 (S39). Accordingly, the gas concentration data detected through the sensor unit 32 is transmitted to the receiver 40 when the sensor unit 32 operates normally, and the sensor unit 32 when the sensor unit 32 is broken. Is transmitted to the receiver 40 informing that it has failed.

6 is a flowchart illustrating an operation of a second microcomputer in a receiver in the gas detector illustrated in FIG. 4.

First, when power is turned on, the second microcomputer unit 44 performs initialization (S41). When the initialization is performed, a call signal is transmitted to the detector 30 (S42). After transmitting the call signal as described above, it is determined whether or not a response signal is received from the detection unit 30 accordingly (S43). As a result of the determination, if there is a response signal, the gas of the detection unit 30 is determined from the response signal. Data is extracted (S44). The extracted gas data information of the detection unit 30 is displayed on the external output unit, the concentration display unit, and the lamp display unit control (S45). If the sensor unit 32 is broken, the gas data information is information indicating the failure. On the other hand, if a response signal is not received from the detector 30 even after a predetermined time has elapsed since the call signal is transmitted to the detector 30, an error alert is output (S46).

According to the present invention, by transmitting and receiving data between the detection unit and the reception unit by a communication method, an increase in resistance of a transmission line caused by a long distance installation of a detection unit, which is a conventional problem, an increase in contact resistance and noise due to a convulsion change, and noise Distortion of data due to inflow and the like can be remarkably eliminated.

In addition, in the conventional method, a thick wire was used to reduce the resistance of the transmission line as much as possible, but according to the present invention, since the use of a thin wire such as a telephone line is possible, the installation cost of the product is also very low.

In addition, in the conventional product, only one detector may be installed in one receiver, but in the present invention, a plurality of detectors may be linked to one receiver by utilizing a communication method. This has the advantage that the size of the product can be significantly reduced compared to the conventional method, the price of the product can be manufactured very cheaply.

In addition, the number of parts of the overall product is reduced, the reliability and safety of the product is high, and can be greatly improved in the work process.

That is, compared to the existing product, the power supply unit, detector signal input unit, and microcomputer unit (signal processing unit) are added by adding only a part of the external output unit, the concentration display unit, and the lamp display unit in accordance with the quantity of the detection unit to be interlocked. As one is shared, it can reduce the cost of papermaking, reduce work process, reduce defective rate, and improve product stability.

Claims (8)

In the gas leakage alarm device comprising a detection sensor for detecting the leakage of gas and an alarm unit for generating an alarm when the gas leakage is detected from the detection sensor, Calculate the leakage concentration of the gas according to the output of the detection sensor and store the operation result, and if the operation result is requested by a call signal having the same address as the preset address, output the address information and the stored operation result With the first microcomputer part to say, An address setting unit for setting a unique address in the first microcomputer unit; A communication interface unit transmitting address information and an operation result output from the first microcomputer unit through a network, or transferring the call signal received through the network to the first microcomputer unit; The call signal having at least one address signal is transmitted to the at least one first microcomputer through the communication interface, and the address information and the gas leakage information are extracted from the response signal received corresponding to the call signal. The second microcomputer unit to display through, And a quantity setting unit configured to set the quantity of the first microcomputer unit to communicate with the second microcomputer through the communication interface unit. According to claim 1, At the communication interface unit, And said network is wired or wireless communication. The gas leak alarm apparatus according to claim 2, wherein the wire communication is RS 485 or DTMF communication. 3. The gas leak alarm system according to claim 2, wherein the wireless communication is a packet communication method. The method of claim 1, And at least one of an external output unit, a concentration display unit, and a lamp display unit for displaying gas data corresponding to the quantity of the first microcomputer interlocked with the second microcomputer. The method of claim 5, wherein the external output unit, Under the control of the second microcomputer unit, gas data outputs at least one signal of current, contact, and sound. In the gas leakage alarm device comprising a detection sensor for detecting the leakage of gas and an alarm unit for generating an alarm when the gas leakage is detected from the detection sensor, A first microcomputer unit which calculates a leakage concentration of gas according to the output of the detection sensor, stores the calculation result, and outputs the stored calculation result when a call signal requesting the calculation result is received; A communication interface unit transmitting the operation result output from the first microcomputer unit through a network, or transmitting the call signal received through the network to the first microcomputer unit; And a second micom unit for transmitting the call signal to the first micom unit through the communication interface unit, extracting gas leakage information from the response signal received corresponding to the call signal, and displaying the extracted information through the alarm unit. Gas leakage alarm. The method of claim 7, wherein in the communication interface, And said network is wired or wireless communication.