CN112834781B - Method for identifying gas-using equipment through gas flow rate - Google Patents
Method for identifying gas-using equipment through gas flow rate Download PDFInfo
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Abstract
The invention discloses a method for identifying gas-using equipment through instantaneous flow, which is characterized by comprising the following steps of firstly, obtaining gas-using characteristic values of different equipment in a laboratory, and storing the recorded gas-using characteristic values of the equipment into a storage module in an ultrasonic gas meter when a meter leaves a factory; judging which gas equipment belongs to by calculating the average flow velocity, the maximum flow velocity, the ignition time t, the maximum flow velocity d after the ignition process and the minimum flow velocity e after the ignition process of the ultrasonic gas meter; and the judgment of the gas consumption for stopping the equipment and the processing of the abnormal state are carried out. According to the method, through judgment of the gas utilization equipment and transmission of the information to the system end, the living habits of the residents can be analyzed, and suggestions for optimizing the gas utilization habits are provided, so that the purposes of energy conservation and consumption reduction are achieved; when the gas stove is judged to be used for a long time, the alarm information can be transmitted to a user, and safety accidents are prevented.
Description
Technical Field
The invention belongs to the field of application of ultrasonic gas meters, and particularly relates to a method for identifying gas-using equipment through instantaneous flow.
Background
The ultrasonic gas meter measures the gas usage through flow rate and time integral, the characteristic is only used for measuring in the existing ultrasonic application, and the application range of the flow rate can be expanded by applying the method, so that the ultrasonic gas meter generates additional value. Since the flow rate characteristics of various gas appliances during use are different, it is possible to judge which type of gas appliance is currently in use by recognizing such flow rate characteristics. By analyzing the use condition of the gas equipment, on one hand, the early warning or alarm can be carried out on the abnormal use condition, so that the safety of gas application is improved; on the other hand, the gas consumption habits of the users can be analyzed, and suggestions for optimizing the gas consumption habits are provided, so that the purposes of saving energy and reducing consumption are achieved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for identifying gas-using equipment through gas flow rate.
A method for identifying a gas-using device through instantaneous flow comprises the following steps:
step (1), gas utilization characteristic values of different devices are obtained in a laboratory, an ultrasonic gas meter is manually operated to enter a device detection state, 1-time gas utilization average flow rate is obtained every 125 milliseconds, the flow rate in the gas utilization process is collected by the ultrasonic gas meter, the device gas utilization characteristic values are obtained through analysis of a relation curve of the flow rate and time, and the characteristic values comprise:
ignition time Ti: the time required by the equipment from the beginning of gas utilization to the completion of ignition is from the flow rate of more than 0L/h to the time when the variation of the flow rate is less than 0.1L/h within 2 seconds;
ignition process peak flow rate Fi: maximum flow rate achieved during ignition
Maximum flow rate Di during gas use: maximum flow rate during normal gas use;
minimum flow rate for gas process Ei: minimum flow rate during normal gas use;
minimum gas usage duration Gi: minimum time of single use of the device;
maximum gas usage duration Hi: maximum time of single use of the device;
i denotes different gas-using equipment.
And (2) storing the recorded characteristic value of the equipment gas consumption into a storage module in the ultrasonic gas meter when the meter is delivered.
And (3) when the ultrasonic gas meter is not used by gas equipment, the basic flow rate fo of the ultrasonic gas meter is 0, the ultrasonic gas meter acquires 1 current average flow rate fc every 2 seconds, the fo is subtracted from the fc to obtain delta f, when the delta f is larger than 0.2, the ultrasonic gas meter enters an equipment identification state, the ultrasonic gas meter acquires 1-time gas use average flow rate every 125 milliseconds at the moment, gas use characteristics including the maximum flow rate f, the ignition time t, the maximum flow rate d after the ignition process and the minimum flow rate e after the ignition process at the moment are continuously recorded for 10 seconds, and if the delta f is smaller than 0.05L/h within 10 seconds, the equipment identification state is quitted.
And (4) judging which gas-using equipment belongs to according to the characteristic data, wherein the judging conditions are as follows:
1)0.8Fi<f<Fi
2)d<Di
3)e>Ei
4)0.8Ti<t<Ti
if the above 4 conditions are satisfied at the same time, it is determined that the device i is in use.
When the 4 conditions cannot be met simultaneously, the ultrasonic gas meter judges whether the parameters meet the characteristic conditions of other set gas-using equipment, and when the parameters cannot be met, the ultrasonic gas meter records the current parameters f, d, e and t, and marks the gas-using equipment as unknown equipment, wherein the default Gs of the unknown equipment is 1 minute, and Hs is 1 hour. When the situation that the unknown equipment is used is judged, the ultrasonic gas meter reports the characteristic value of the unknown equipment to a system end through a network, and then the characteristic value of the unknown equipment is manually processed.
At this time, the updated base flow rate fo is the average flow rate fc of the current gas usage state.
And (5) judging the condition for stopping gas consumption of the equipment.
Continuously accumulating the gas consumption time tl of the equipment by the ultrasonic gas meter, and simultaneously judging the following
1)fc<0.2L/h
2) Δ f <0, and Ei < Δ f < Di
When the condition 1) is satisfied, all the gas-using equipment stops operating, and when the condition 2) is satisfied, the gas-using equipment i stops operating. And if tl < Gi when gas consumption is stopped, the ultrasonic gas meter judges that the gas consumption process does not meet the minimum gas consumption time, and discards the gas consumption data.
And (6) processing an abnormal state, wherein the function is mainly used for identifying long-time gas consumption, such as the condition that the gas stove is not closed after being used for a long time. When the condition for judging the stop gas consumption of the equipment is not met, the ultrasonic gas meter continuously accumulates the equipment gas consumption time tl, when tl is larger than Hi, the ultrasonic gas meter judges that the gas consumption equipment i consumes the gas for overlength and abnormally, and the ultrasonic gas meter can send the abnormal information to a system end for alarming or directly carry out valve closing alarming at a meter end.
The invention has the following beneficial effects:
the method can roughly analyze the living habits, the time for cooking, the time for bathing and the like of the resident by judging the gas utilization equipment and transmitting the information to the system end, and provides suggestions for optimizing the gas utilization habits, thereby achieving the purposes of saving energy and reducing consumption; when the gas stove is judged to be used for a long time, the alarm information can be transmitted to a user, so that safety accidents are prevented;
the method can be realized only on an ultrasonic gas meter, and for the traditional membrane gas meter, flow information cannot be accurately obtained; the type and accuracy of the judged equipment can be increased by continuously correcting and expanding the characteristic value.
Drawings
Fig. 1 is a gas use characteristic curve of a single-head gas stove according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the following figures and examples.
A method for identifying a gas-using device through instantaneous flow comprises the following steps:
step (1), acquiring gas use characteristic values of different devices in a laboratory, enabling an ultrasonic gas meter to enter a device detection state through manual operation, acquiring 1-time gas use average flow rate every 125 milliseconds, acquiring the flow rate in a gas use process by using the ultrasonic gas meter, and analyzing a relationship curve between the flow rate and time to obtain the device gas use characteristic values, wherein the characteristic values comprise:
ignition time Ti: the time required by the equipment from the beginning of gas utilization to the completion of ignition is from the flow rate of more than 0L/h to the time when the variation of the flow rate is less than 0.1L/h within 2 seconds;
ignition process peak flow rate Fi: maximum flow rate achieved during ignition
Maximum flow rate Di during gas use: maximum flow rate during normal gas use;
minimum flow Ei during gas use: minimum flow rate during normal gas use;
minimum gas usage duration Gi: minimum time of single use of the device;
maximum gas usage duration Hi: maximum time of single use of the device;
i denotes different gas-using equipment.
Fig. 1 shows a gas usage characteristic curve of a typical single-head gas range.
The gas use characteristic value of the single-head gas stove is obtained through the curve analysis: ts, fs, ds and Es, wherein Gs is set to be 1 minute, and Hs is set to be 5 hours according to the gas consumption habit of the gas stove.
And (2) storing the recorded characteristic value of the equipment gas consumption into a storage module in the ultrasonic gas meter when the meter leaves a factory.
And (3) when the ultrasonic gas meter is not used by gas equipment, the basic flow rate fo of the ultrasonic gas meter is 0, the ultrasonic gas meter acquires 1 current average flow rate fc every 2 seconds, the fc subtracts fo to obtain delta f, when the delta f is larger than 0.2, the ultrasonic gas meter enters an equipment identification state, the ultrasonic gas meter acquires 1 gas use average flow rate every 125 milliseconds at the moment and continuously records gas use characteristics including the maximum flow rate f, the ignition time t, the maximum flow rate d after the ignition process and the minimum flow rate e after the ignition process at the moment for 10 seconds, and if the delta f is smaller than 0.05L/h within 10 seconds, the equipment identification state is exited.
And (4) judging which gas-using equipment belongs to according to the characteristic data, wherein the equipment is a single-head gas cooker, and the judging conditions are as follows:
1)0.8Fs<f<Fs
2)d<Ds
3)e>Es
4)0.8Ts<t<Ts
and 4 conditions are met simultaneously, and the ultrasonic gas meter considers that the gas meter is under the use condition of a single-head gas stove at the moment.
When the 4 conditions cannot be met simultaneously, the ultrasonic gas meter judges whether the parameters meet the characteristic conditions of other set gas-using equipment, and when the parameters cannot be met, the ultrasonic gas meter records the current parameters f, d, e and t, and marks the gas-using equipment as unknown equipment, wherein the default Gs of the unknown equipment is 1 minute, and Hs is 1 hour. Ultrasonic gas meter thinks that this moment is in under unknown equipment in service behavior
And reporting the characteristic value of the unknown equipment to a system end through a network, and manually processing the characteristic value of the unknown equipment.
At this time, the base flow rate fo is updated to the average flow rate fc of the current gas usage state
Step (5) judging conditions for stopping gas consumption of equipment
Continuously accumulating the gas consumption time tl of the equipment by the ultrasonic gas meter, and simultaneously judging the following
1)fc<0.2L/h
2) Δ f <0, and Es < Δ f < Ds
When the condition 1) is met, all gas-consuming equipment stops working, and when the condition 2) is met, the single-head gas stove stops working. If tl < Gs when gas utilization is stopped, the ultrasonic gas meter judges that the gas utilization process does not meet the minimum gas utilization time, and the gas utilization data of the time are discarded.
And (6) processing an abnormal state, wherein the function is mainly used for identifying long-time gas consumption, such as the condition that the gas stove is not closed after being used for a long time. When the condition for judging the stop gas consumption of the equipment is not met, the ultrasonic gas meter continuously accumulates the gas consumption time tl of the equipment, when tl is greater than Hs, the ultra-long abnormal gas consumption is judged, and the ultrasonic gas meter can send the abnormal information to a system end for alarming or directly carry out valve closing alarming at a meter end.
Claims (5)
1. A method for identifying a gas-using device through instantaneous flow is characterized by comprising the following steps:
step (1), acquiring gas use characteristic values of different devices in a laboratory;
step (2), storing the recorded characteristic value of the equipment gas consumption into a storage module in the ultrasonic gas meter when the meter leaves a factory;
step (3) when the ultrasonic gas meter is not used by gas equipment, the basic flow rate fo of the ultrasonic gas meter is 0, the ultrasonic gas meter acquires the current average flow rate fc for 1 time every 2 seconds, the fc subtracts fo to obtain delta f, when the delta f is larger than 0.2L/h, the ultrasonic gas meter enters an equipment identification state, the ultrasonic gas meter acquires the gas average flow rate for 1 time every 125 milliseconds at the moment and continuously records gas use characteristics including the maximum flow rate f, the ignition time t, the maximum flow rate d after the ignition process and the minimum flow rate e after the ignition process at the moment, and the ultrasonic gas meter exits the equipment identification state if the delta f is smaller than 0.05L/h within 10 seconds;
step (4), judging which type of gas equipment belongs to according to the characteristic data;
step (5), judging that the gas consumption of the equipment is stopped;
and (6) processing an abnormal state.
2. The method for identifying the gas-using equipment through the instantaneous flow rate as claimed in claim 1, wherein the step (1) is as follows:
the method comprises the following steps of obtaining gas use characteristic values of different devices in a laboratory, enabling the ultrasonic gas meter to enter a device detection state through manual operation, obtaining 1-time gas use average flow rate every 125 milliseconds, using the ultrasonic gas meter to collect the flow rate in the gas use process, and obtaining the gas use characteristic values of the devices through analysis of the relation curve of the flow rate and time, wherein the characteristic values comprise:
ignition time Ti: the time required by the equipment from the beginning of gas utilization to the completion of ignition, namely the time from the flow rate of more than 0L/h to the time from the change of less than 0.1L/h within 2 seconds of the flow rate;
ignition process peak flow rate Fi: maximum flow rate achieved during ignition
Maximum flow rate Di during gas use: maximum flow rate during normal gas use;
minimum flow rate Ei for gas process: minimum flow rate during normal gas use;
minimum gas usage duration Gi: minimum time of single use of the device;
maximum gas usage duration Hi: maximum time of single use of the device;
i denotes different gas-using equipment.
3. The method for identifying the gas-using equipment through the instantaneous flow rate as claimed in claim 2, wherein the step (4) is as follows:
and judging which type of gas equipment belongs to according to the characteristic data, wherein the judgment conditions are as follows:
1)0.8Fi<f<Fi
2)d<Di
3)e>Ei
4)0.8Ti<t<Ti
if the 4 conditions are met at the same time, the device i is judged to be in use;
when the 4 conditions cannot be met simultaneously, the ultrasonic gas meter judges whether the parameters meet the characteristic conditions of other set gas-using equipment, if the parameters cannot be met, the ultrasonic gas meter records the current parameters f, d, e and t, and marks the gas-using equipment as unknown equipment, wherein the minimum time Gs of the single use of the default equipment by the unknown equipment is 1 minute, and the maximum time Hs of the single use of the equipment is 1 hour; when the service condition of the unknown equipment is judged, the ultrasonic gas meter reports the characteristic value of the unknown equipment to a system end through a network, and then the characteristic value of the unknown equipment is manually processed;
at this time, the updated base flow rate fo is the average flow rate fc of the current gas usage state.
4. The method for identifying the gas-using equipment through the instantaneous flow rate as claimed in claim 3, wherein the step (5) is as follows:
judging the condition for stopping gas consumption of the equipment;
continuously accumulating the gas consumption time tl of the equipment by the ultrasonic gas meter, and simultaneously judging the following
1)fc<0.2L/h
2) Δ f <0, and Ei < Δ f < Di
When the condition 1) is met, all the gas-using equipment stops working, and when the condition 2) is met, the gas-using equipment i stops working; if tl < Gi when gas utilization is stopped, the ultrasonic gas meter judges that the gas utilization process does not meet the minimum gas utilization time, and the gas utilization data are discarded.
5. The method for identifying the gas-using equipment through the instantaneous flow rate as claimed in claim 4, wherein the step (6) is implemented by the following specific method:
processing abnormal state, and identifying long-time gas consumption;
when the condition for judging the stop gas consumption of the equipment is not met, the ultrasonic gas meter continuously accumulates the equipment gas consumption time tl, when tl is larger than Hi, the ultrasonic gas meter judges that the gas consumption equipment i consumes the gas for overlength and abnormally, and the ultrasonic gas meter can send the abnormal information to a system end for alarming or directly carry out valve closing alarming at a meter end.
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| US9556791B2 (en) * | 2013-12-18 | 2017-01-31 | Siemens Energy, Inc. | Active measurement of gas flow velocity or simultaneous measurement of velocity and temperature, including in gas turbine combustors |
| CN107504524A (en) * | 2017-09-08 | 2017-12-22 | 珠海格力电器股份有限公司 | Method and device for processing abnormal work of gas stove, processor and range hood |
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