Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a gas meter fault processing system and method for real-time monitoring and timely response.
The purpose of the invention is realized by the following technical scheme: a gas meter fault processing system for real-time monitoring and timely responding comprises a plurality of wireless remote transmitting gas meters, a data concentrator, a gas meter management system and a maintenance personnel terminal; the wireless remote transmission gas meter is characterized in that at least one self-checking module is arranged inside the wireless remote transmission gas meter, the self-checking module performs self-checking according to a preset self-checking project, when a fault is found or after early warning is given out, the self-checking module sends the fault to a gas meter management system through a data concentrator, the gas meter management system analyzes the fault in real time, and the position, the fault type and/or the solution mode of the wireless remote transmission gas meter are pushed to a corresponding maintenance personnel terminal in a task mode.
The self-checking module comprises an internal/external sampling abnormity detection unit;
the internal/sample sampling abnormity detection unit comprises a mainboard and an electromechanical conversion circuit, and the wireless remote transmission gas meter comprises a gas inlet, a gas outlet, an internal sampling circuit and a counter; a metering chamber is arranged between the air inlet and the air outlet; the input ends of the internal sampling circuit and the counter are connected with the metering chamber; the internal sampling circuit generates a pulse signal when gas passes through the metering chamber, and the output end of the internal sampling circuit is connected with the main board; the counter counts the gas passing through the metering chamber, the output end of the counter is connected with the electromechanical conversion circuit, and the output end of the electromechanical conversion circuit is connected with the main board; the main board comprises a main control MCU and an alarm circuit, wherein the input end of the main control MCU is respectively connected with the internal sampling circuit and the electromechanical conversion circuit, and the output end of the main control MCU is connected with the alarm circuit; the master control MCU is used for judging whether the intelligent gas meter has abnormal metering according to the pulse signal from the internal sampling circuit and the signal from the electromechanical conversion circuit, and generating an alarm signal when the metering is abnormal.
The master MCU includes:
the internal sampling counting module is used for recording the number of times of received internal sampling pulses;
the internal sampling processing module is used for adding one to the pulse frequency recorded in the internal sampling counting module when receiving the pulse signal from the internal sampling circuit each time;
the electromechanical signal processing module is used for recording the receiving times of the electromechanical conversion signals, adding one to the receiving times of the electromechanical conversion signals (further realizing gas consumption statistics and facilitating subsequent cost calculation) when the signals of the electromechanical conversion circuit are received every time, and resetting the pulse times recorded in the internal sampling counting module;
the alarm judging module is used for judging whether the pulse frequency recorded in the internal sampling counting module is greater than a set alarm threshold value in real time;
and the alarm signal generation module is used for generating an alarm signal when the recorded pulse frequency is greater than an alarm threshold value, and controlling the alarm circuit to carry out measurement abnormity alarm.
The main board further comprises a valve driving circuit, the input end of the valve driving circuit is connected with the main control MCU, and the output end of the valve driving circuit is connected with the air valve; the master control MCU also comprises a valve driving control module which is used for generating a valve control signal when the recorded pulse times are more than the alarm threshold value and controlling the air valve to be closed through a valve driving circuit.
The self-checking module comprises an under-voltage abnormity detecting unit; the under-voltage abnormity detection unit is used for detecting the voltage of a main/secondary power supply of the wireless remote transmission gas meter during working.
The self-checking module comprises a magnetic attack abnormity detection unit; the wireless remote gas meter comprises an electromechanical conversion device adopting a bipolar magnetic switch; the magnetic attack abnormity detection unit is used for detecting whether the magnetic field of the wireless remote transmission gas meter is attacked or not.
The maintenance personnel terminal is a mobile handheld terminal, and the fault type and/or the solution are pushed to the APP of the mobile handheld terminal.
A real-time monitoring and timely responding gas meter fault processing method comprises the following steps: the method comprises the following steps:
s1: the self-checking module is arranged in the wireless remote gas meter, performs self-checking according to a preset self-checking item, and sends the self-checking item to a gas meter management system through the data concentrator after a fault is found or early warning is given;
s2: the gas meter management system analyzes the fault in real time and pushes the position, fault type and/or solution of the wireless remote transmission gas meter to a corresponding maintenance personnel terminal in a task mode;
s3: and the maintenance personnel receives the task through the maintenance personnel terminal, selects a carried tool according to the fault type and/or the solution mode, and goes to the position of the wireless remote transmission gas meter for maintenance.
The self-checking items comprise one or more of internal/external sampling abnormity detection, magnetic attack abnormity detection and under-voltage abnormity detection.
The invention has the beneficial effects that:
(1) the gas meter fault detection system can automatically detect faults and report fault information in real time, the management system can timely acquire the fault information and issue a maintenance task to the APP client of a maintenance worker, the maintenance worker can timely and even come to a client in advance to process the fault problem of the gas meter, the working efficiency is greatly improved, the experience of using gas by a user is improved, the problem that the fault of the gas meter cannot be timely processed is effectively solved, gas accidents are avoided, and the gas use safety is improved.
(2) The internal/external sampling abnormity detection unit can detect the gas-using unmeasured fault caused by the abnormity of the cable between the electromechanical conversion circuit and the mainboard, and can also detect the gas-using unmeasured fault caused by the damage of the electromechanical conversion circuit and the damage of the base meter counter.
Detailed Description
The technical scheme of the invention is further described in detail by combining the attached drawings:
as shown in fig. 1, a gas meter fault processing system for real-time monitoring and timely responding includes a plurality of wireless remote transmitting gas meters, a data concentrator, a gas meter management system and a maintenance personnel terminal; the wireless remote transmission gas meter is characterized in that at least one self-checking module is arranged inside the wireless remote transmission gas meter, the self-checking module performs self-checking according to a preset self-checking project, when a fault is found or after early warning is given out, the self-checking module sends the fault to a gas meter management system through a data concentrator, the gas meter management system analyzes the fault in real time, and the position, the fault type and/or the solution mode of the wireless remote transmission gas meter are pushed to a corresponding maintenance personnel terminal in a task mode.
In this embodiment, the self-test module includes an internal/external sampling anomaly detection unit;
specifically, the internal/sample sampling abnormity detection unit comprises a mainboard and an electromechanical conversion circuit, and the wireless remote transmission gas meter comprises a gas inlet, a gas outlet, an internal sampling circuit and a counter; a metering chamber is arranged between the air inlet and the air outlet; the input ends of the internal sampling circuit and the counter are connected with the metering chamber; the internal sampling circuit generates a pulse signal when gas passes through the metering chamber, and the output end of the internal sampling circuit is connected with the main board; the counter counts the gas passing through the metering chamber, the output end of the counter is connected with the electromechanical conversion circuit, and the output end of the electromechanical conversion circuit is connected with the main board; the main board comprises a main control MCU and an alarm circuit, wherein the input end of the main control MCU is respectively connected with the internal sampling circuit and the electromechanical conversion circuit, and the output end of the main control MCU is connected with the alarm circuit; the master control MCU is used for judging whether the intelligent gas meter has abnormal metering according to the pulse signal from the internal sampling circuit and the signal from the electromechanical conversion circuit, and generating an alarm signal when the metering is abnormal.
The master MCU includes:
the internal sampling counting module is used for recording the number of times of received internal sampling pulses;
the internal sampling processing module is used for adding one to the pulse frequency recorded in the internal sampling counting module when receiving the pulse signal from the internal sampling circuit each time;
the electromechanical signal processing module is used for recording the receiving times of the electromechanical conversion signals, adding one to the receiving times of the electromechanical conversion signals and clearing the pulse times recorded in the internal sampling counting module when the signals of the electromechanical conversion circuit are received each time;
the alarm judging module is used for judging whether the pulse frequency recorded in the internal sampling counting module is greater than a set alarm threshold value in real time;
and the alarm signal generation module is used for generating an alarm signal when the recorded pulse frequency is greater than an alarm threshold value, and controlling the alarm circuit to carry out measurement abnormity alarm.
And an air valve is also arranged between the air inlet and the air outlet.
The air valve is a gas meter motor valve.
The main board further comprises a valve driving circuit, the input end of the valve driving circuit is connected with the main control MCU, and the output end of the valve driving circuit is connected with the air valve; the master control MCU also comprises a valve driving control module which is used for generating a valve control signal when the recorded pulse times are more than the alarm threshold value and controlling the air valve to be closed through a valve driving circuit.
The self-checking module comprises an under-voltage abnormity detecting unit; the under-voltage abnormity detection unit is used for detecting the voltage of a main/secondary power supply of the wireless remote transmission gas meter during working.
The self-checking module comprises a magnetic attack abnormity detection unit; the wireless remote gas meter comprises an electromechanical conversion device adopting a bipolar magnetic switch; the magnetic attack abnormity detection unit is used for detecting whether the magnetic field of the wireless remote transmission gas meter is attacked or not.
The maintenance personnel terminal is a mobile handheld terminal, and the fault type and/or the solution are pushed to the APP of the mobile handheld terminal.
In addition, in this embodiment, the mobile handheld terminal that pushes information may determine according to the location, the type of failure, and whether the maintenance personnel are available.
Further, the state of the maintenance personnel is replaced through the APP, including being idle for a certain period of time, being on the way, being maintained, and the like.
A gas meter fault processing method for real-time monitoring and timely response comprises the following steps: the method comprises the following steps:
s1: the self-checking module is arranged in the wireless remote gas meter, performs self-checking according to a preset self-checking item, and sends the self-checking item to a gas meter management system through the data concentrator after a fault is found or early warning is given;
s2: the gas meter management system analyzes the fault in real time and pushes the position, fault type and/or solution of the wireless remote transmission gas meter to a corresponding maintenance personnel terminal in a task mode;
s3: and the maintenance personnel receives the task through the maintenance personnel terminal, selects a carried tool according to the fault type and/or the solution mode, and goes to the position of the wireless remote transmission gas meter for maintenance.
The self-checking items comprise one or more of internal/external sampling abnormity detection, magnetic attack abnormity detection and under-voltage abnormity detection.
Wherein detecting the inner/outer sampling abnormality comprises:
s01, when the gas meter is ventilated, the internal sampling circuit sends a pulse signal to the master control MCU, and the electromechanical conversion circuit conducts electromechanical conversion on the signal from the counter and then transmits the signal to the master control MCU;
s02, the main control MCU judges whether the intelligent gas meter has abnormal metering according to the pulse signal from the internal sampling circuit and the signal from the electromechanical conversion circuit:
(1) if the metering is abnormal, generating an alarm signal and entering the step S03;
(2) if the metering exception does not occur, the processing is not carried out;
and S03, the master control MCU controls the alarm circuit to alarm the metering abnormity.
The step S02 includes the following sub-steps:
s021, initializing the pulse frequency recorded in the internal sampling counting module to zero by the master control MCU;
s022, the main control MCU judges whether a pulse signal from the internal sampling circuit is received at present in real time:
(1) if a pulse signal from the internal sampling circuit is received, adding one to the number of pulses recorded in the internal sampling counting module, and entering step S023;
(2) if the pulse signal from the internal sampling circuit is not received, no processing is carried out;
s023, the master control MCU judges whether a signal from the electromechanical conversion circuit is received:
(1) if receiving the signal from the electromechanical conversion circuit, the main control MCU clears the pulse times recorded in the internal sampling counting module;
(2) if the signal from the electromechanical conversion circuit is not received, the process proceeds to step S24;
s024, the main control MCU judges whether the pulse frequency recorded in the internal sampling counting module is greater than a set alarm threshold value:
(1) if the measured value is larger than the alarm threshold value, the gas meter is considered to be abnormal in measurement, and an alarm signal is generated;
(2) if the signal is not greater than the alarm threshold, the step S22 is returned to perform the receiving judgment and the number accumulation of the next internal sampling circuit pulse signal.
The alarm method of the metering abnormity alarm system of the intelligent gas meter further comprises a gas valve control step: and when the main control MCU judges that the intelligent gas meter has abnormal metering, the main control MCU controls the valve driving circuit to close the gas valve.
When a user uses gas, the gas passes through the gas valve sequentially through the gas inlet, the gas valve, the metering chamber and the gas outlet, the metering chamber is ventilated, the counter in the base table is used for counting, and the electromechanical conversion circuit is used for carrying out electromechanical conversion on information obtained by the counter and then transmitting the information to the main control MCU; meanwhile, an internal sampling circuit (a pulse sampler) generates a pulse signal and transmits the pulse signal to the master control MCU.
The master control MCU can receive signals from the electromechanical conversion circuit while receiving pulse signals from the internal sampling circuit, and the normal work of the gas meter is explained. Therefore, if the main control MCU can only receive the pulse signal of the internal sampling circuit and can not receive the counting signal from the electromechanical conversion circuit, the situation that gas is not used for metering is shown (no matter the gas meter has the base meter counter which is out of gear, the electromechanical conversion circuit is damaged or a cable between the electromechanical conversion circuit and the main board is abnormal, the main control MCU can only receive the pulse signal from the internal sampling circuit but can not receive the counting signal from the electromechanical conversion circuit);
in this embodiment, each time a pulse signal from the internal sampling circuit is received, the main control MCU adds one to the received number of pulses, and clears the received number of pulses (for metering/charging, etc.) if a signal from the electromechanical conversion circuit is received; if the pulse signal from the internal sampling circuit can be received and the signal of the electromechanical conversion circuit can be received at the same time, the pulse counting can be repeatedly added with one or reset all the time, which represents that the circuit works normally without warning; if the pulse signals from the internal sampling circuit can only be received within a period of time and the signals from the electromechanical conversion circuit cannot be received (gas consumption is not measured, the fault is not measured), pulse counting can be accumulated and superposed (one is added every time), and when the pulse frequency exceeds a set threshold value, the main control MCU controls the valve driving circuit to close the air valve to avoid loss; meanwhile, the alarm circuit is controlled to work, so that the fault can be conveniently and timely processed by (a gas meter company).