TW201905405A - System and method of warning air leakage of sintering trolleys - Google Patents

Abstract

A system and a method of warning air leakage of sintering trolleys are provided. Position information of the sintering trolleys can be acquired by a tag and a reader. Acoustic pressure microphones can be used to produce acoustic pressure signals. A processing unit can obtain the acoustic pressure signals corresponding to each of the sintering trolleys, and then calculate times of the acoustic pressure signal being higher than a threshold signal. Accordingly, the specific sintering trolleys can be found, and the air leakage conditions thereof are obtained.

Description

 Sintering trolley air leakage warning system and early warning method thereof  

The invention relates to an early warning system and an early warning method thereof, in particular to an early warning system for an air leakage of a sintering trolley and an early warning method thereof.

The sinter plant is used to produce sinter ore as a raw material for blast furnace ironmaking. The raw materials are compounded according to a specific ratio, uniformly stirred and granulated, and then sintered in a sintering machine including a plurality of sintering trolleys. In the sintering process, the detection index of the sintering condition is gas permeability, and the ventilation amount is positively correlated with the gas permeability. Therefore, when air leakage occurs in the sintering machine, the amount of ventilation is reduced, which in turn reduces the yield of the sintered ore.

In order to avoid the leakage of the sintering machine affecting the output of the sinter, it is imperative for the steel industry to save energy and increase production by looking for the air leakage area of the sintering machine to reduce the air leakage rate of the sintering machine. In general, the leakage of the sintering trolley accounts for about half of the air leakage rate of the sintering machine. It is customary to find the leakage of the sintering trolley according to the manual method, which is used in the operation of the sintering machine to enable the person to judge by using eyesight and hearing. However, the aforementioned conventional methods require long-term exposure of personnel to high dust and high noise (about 85 decibels to about 105 decibels), and since this method depends on the detection ability of personnel, qualitative, quantitative, and localization analysis cannot be achieved. .

In view of this, it is not necessary to provide an early warning system for the leakage of the trolley and its early warning method. The automatic system can detect the air leakage of the sintering trolley, which can not only reduce the artificial judgment error, but also accurately select the sintering trolley with serious air leakage.

One aspect of the present invention provides a sintering trolley air leakage warning system, which is based on the position information of the sintering trolley and the sound pressure signal, and selects the sintering trolley according to the number of times the sound pressure signal exceeds the threshold value.

Another aspect of the present invention provides a method for early warning of leakage of a sintering trolley, which obtains a sound pressure signal of a corresponding sintering trolley according to the position information of the sintering trolley, and calculates the number of times the sound pressure signal of the sintering trolley exceeds the threshold value, Make a selection.

According to an aspect of the present invention, a sintering trolley air leakage warning system is provided, which comprises a plurality of sintering trolleys, at least one tag, a reader, a plurality of sound pressure microphones, and a processing unit. At least one label is placed on one of the sintering carts. The reader is used to identify at least one tag to obtain location information. The sound pressure microphone is used to obtain the sound pressure signal, and the processing unit obtains the sound pressure signal corresponding to each sintering trolley according to the position information mentioned above. Furthermore, the processing unit calculates the number of times that the sound pressure signal corresponding to each sintering trolley exceeds the first threshold value, and selects one of the sintering trolleys according to the number of times of each sintering trolley.

According to an embodiment of the invention, the at least one tag is a radio frequency identification tag, wherein the radio frequency identification tag comprises a housing and a protection element surrounding the housing. The material of the outer casing contains Teflon. The reader is a radio frequency identification reader.

According to an embodiment of the invention, the processing unit obtains the sound pressure signal corresponding to each of the sintering trolleys according to the position information, the speed and the width of the sintering trolley.

According to an embodiment of the present invention, for each sintering trolley, the processing unit calculates a first average of the sound pressure signals at the same time point during a period, and calculates a first average value greater than the first threshold value during the period. The first number. Furthermore, the processing unit sorts the sintering trolleys according to the first number of times corresponding to each sintering trolley to obtain the first sequence.

According to an embodiment of the invention, the sound pressure microphone comprises a plurality of first microphones and at least one second microphone. The first microphone system is disposed on both sides of the sintering trolley, and the at least one second microphone is disposed on the material surface of the sintering trolley. The first microphone acquires a plurality of first sound pressure signals. For each sintering trolley, a second number of times the first sound pressure signal is greater than the second threshold value during the above period is calculated. Furthermore, the processing unit sorts the sintering trolleys according to the second number of times corresponding to each sintering trolley to obtain the second sequence.

According to an embodiment of the invention, the sintering trolley air leakage warning system further comprises at least one anemometer to obtain the wind speed signal. For each sintering trolley, the processing unit is configured to calculate a third number of times the wind speed signal is less than the third threshold value during the above period. Furthermore, the processing unit sorts the sintering trolleys according to the third order corresponding to each sintering trolley to obtain the third sequence.

According to an embodiment of the present invention, the processing unit is configured to select a plurality of first sintering trolleys from the first sequence, select a plurality of second sintering trolleys from the second sequence, and from the third sequence A plurality of third sintering trolleys were selected. Furthermore, an intersection between the first sintering trolley, the second sintering trolley, and the third sintering trolley is selected, and a warning message is issued based on the intersection.

According to another aspect of the present invention, a method for early warning of leakage of a sintering trolley is provided, which is suitable for use in a computer system. At least one label is disposed in one of the sintering trolleys. The method includes obtaining position information through a reader and obtaining a plurality of sound pressure signals through a plurality of sound pressure microphones. Then, the sound pressure signal corresponding to each sintering trolley is obtained according to the position information. Then, the number of times the sound pressure signal corresponding to each sintering trolley exceeds the first threshold value is calculated, and one of the sintering trolleys is selected according to the number of times corresponding to each sintering trolley.

According to an embodiment of the invention, the at least one tag is a radio frequency identification tag, and the reader is a radio frequency identification reader. The step of obtaining the sound pressure signal corresponding to each sintering trolley according to the position information comprises: obtaining the sound pressure signal corresponding to each sintering trolley according to the position information and the speed and width of the sintering trolley.

According to an embodiment of the invention, the step of calculating the number of times each of the sound pressure signals corresponding to each of the sintering trolleys exceeds the first threshold value comprises: for each sintering trolley, calculating the sound pressure signal is the same during a period A first average of time points and a first number of times during which the first average is greater than the first threshold. The above-mentioned sintering trolley air leakage warning method further comprises sorting the sintering trolley according to the first order corresponding to each sintering trolley to obtain the first sequence.

According to an embodiment of the invention, the sound pressure microphone comprises a plurality of first microphones and at least one second microphone. The first microphone system is disposed on both sides of the sintering trolley, and the at least one second microphone is disposed on the material surface of the sintering trolley. The first microphone acquires a plurality of first sound pressure signals. The above-mentioned sintering trolley air leakage warning method further comprises: for each sintering trolley, calculating a second number of times that the first sound pressure signal is greater than the second threshold value during the above period. Next, the sintering trolley is sorted according to the second number of times corresponding to each sintering trolley to obtain the second sequence.

According to an embodiment of the invention, at least one anemometer is used to obtain a wind speed signal. The above-mentioned sintering trolley air leakage warning method further comprises: for each sintering trolley, calculating a third frequency that the wind speed signal is less than the third threshold value during the above period. Next, the sintering trolley is sorted according to the third order corresponding to each sintering trolley to obtain the third sequence.

According to an embodiment of the present invention, the method for predicting air leakage of the sintering trolley further includes: selecting a plurality of first sintering trolleys from the first sequence, selecting a plurality of second sintering trolleys from the second sequence, and A plurality of third sintering trolleys are selected in the third sequence. Then, the intersection between the first sintering trolley, the second sintering trolley, and the third sintering trolley is selected, and a warning message is issued according to the intersection.

By applying the early warning system and early warning method for the leakage of the trolley of the present invention, the specific sintering trolley is selected by using the sound pressure signal and the threshold value of the setting, thereby knowing the air leakage condition of the specific sintering trolley, and immediately making corresponding countermeasures.

100‧‧‧Sintering trolley air leakage warning system

110/110a/110b/110c/110d/110e‧‧‧Sintered trolley

120/120a/120b/120c‧‧‧ label

130/130a/130b/130c‧‧ ‧Reader

140‧‧‧Sound pressure microphone

150‧‧‧Processing unit

160‧‧‧Tianqiao

210a/210b/210c/210d/210e‧‧‧Sintered trolley

220a/220b‧‧‧ label

230‧‧‧Reader

310‧‧‧Sintered trolley

312‧‧‧Material

314/314’‧‧‧ both sides

340a ₁ /340a ₁ '/340b ₁ /340b ₁ '‧‧‧First sound pressure microphone

340a ₂ /340b ₂ ‧‧‧Second sound pressure microphone

360‧‧‧Tianqiao

370‧‧‧

371/372‧‧‧Sound pressure signal

373‧‧‧ time

410‧‧‧Sintered trolley

412‧‧‧Material

472‧‧‧effective wind

474/476‧‧‧Invalid wind

480‧‧‧ anemometer

510‧‧‧Get location information through the reader

520‧‧‧Sound pressure signal through sound pressure microphone

530‧‧‧ Acquire the sound pressure signal corresponding to each sintering trolley

540‧‧‧ Calculate the number of times the sound pressure signal corresponding to each sintering trolley exceeds the first threshold

550‧‧‧Select one of the sintering trolleys according to the number of times each sintering trolley corresponds

V‧‧‧ speed

W‧‧‧Width

A/A’‧‧‧ both sides

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. Detailed description of the drawings is as follows: [Fig. 1] shows an air leakage warning system for a sintering trolley according to an embodiment of the present invention. Schematic diagram.

2 is a schematic view showing a positioning system of a sintering trolley in a gas leakage warning system for a sintering trolley according to an embodiment of the present invention.

FIG. 3A and FIG. 3B are schematic diagrams showing the configuration of a sound pressure microphone according to some embodiments of the present invention.

FIG. 3C is a waveform diagram of a first sound pressure signal and a second sound pressure signal according to an embodiment of the invention.

FIG. 4 is a schematic view showing the configuration of a sintering trolley according to an embodiment of the present invention.

FIG. 5 is a partial flow chart showing a method for warning of air leakage of a sintering trolley according to an embodiment of the invention.

In view of the above, the present invention provides an early warning system for an air leakage of a sintering trolley and an early warning method thereof. The sound pressure signal of each sintering trolley is obtained by a label and a sound pressure microphone, and the sintering trolley that leaks air can be selected according to the set threshold value.

Referring to FIG. 1, a schematic diagram of a burn-in trolley air leakage warning system 100 in accordance with an embodiment of the present invention is shown. The sintering trolley air leakage early warning system 100 of the present invention is applied to detect whether the sintering trolley has air leakage, and includes a plurality of sintering trolleys 110, a label 120 disposed on the sintering trolley 110, a reader 130 for identifying the label 120, Sound pressure microphone 140 and processing unit 150.

The processing unit 150 is, for example, a computer system. In some embodiments, processing unit 150 can also be a central processing unit, a microprocessor, a microcontroller, a digital signal processor, a baseband processor, a special application integrated circuit, and the like.

In an embodiment, the label 120 can be selectively disposed on one or more sintering carts 110 and the tag 120 can be identified by the reader 130. For example, the tag 120 can be a radio frequency identification tag (RFID Tag), and the reader 130 can be a radio frequency identification reader (RFID reader). In other embodiments, the reader 130 can also be an image capture device, and the tag 120 can also be a Quick Response Code or other recognizable pattern. In the embodiment of FIG. 1, the label 120a, the label 120b, and the label 120c are disposed on the sintering cart 110a, the sintering cart 110c, and the sintering cart 110d, respectively, but the arrangement of FIG. 1 is merely an example, and in some embodiments, A label 120 is placed on any number of sintering carts 110. In addition, there are three readers (including the reader 130a, the reader 130b, and the reader 130c) in the embodiment of FIG. 1, but more or less readings may be set in other embodiments. The present invention is not limited thereto.

When the tag 120 is near the reader 130, i.e., the tag 120 enters the read range of the reader 130, the reader 130 can send a signal to the processing unit 150. Since the position of the reader 130 is known, when the processing unit 150 receives the signal from the reader 130, the position information of the corresponding sintering trolley 110 can be obtained.

The sound pressure microphone 140 is used to obtain sound pressure signals, which are transmitted to the processing unit 150. The sound pressure microphone 140 continuously obtains the sound pressure signal, but the processing unit 150 must obtain the sound pressure signal corresponding to one of the sintering carts. In this embodiment, the processing unit 150 can obtain the sound pressure signal corresponding to the sintering trolley 110 according to the position information described above. For example, if the processing unit 150 calculates that the sintering trolley 110c passes the sound pressure microphone 140 between the T1 second and the T2 seconds according to the position information of the sintering cart 110c, the processing unit 150 can extract the T1 second from the sound pressure signal. The portion up to the T2 second is used as the sound pressure signal corresponding to the sintering carriage 110c.

Although no labels are provided on the sintering trolleys 110b and 110e, in one embodiment, the sintering trolley air leakage warning system 100 can be used by the processing unit 150 according to the position information provided by the tag 120 and the reader 130, the moving speed of the sintering trolley 110, and The width of the trolley 110 is sintered to locate each of the sintering trolleys 110 and obtain sound pressure signals corresponding to each of the sintering trolleys. For example, please refer to FIG. 2 , which is a schematic diagram of a positioning system of a sintering trolley in a gas leakage warning system for a sintering trolley according to an embodiment of the invention. It is assumed that the sintering cart 210a to the sintering cart 210e are moved to the right in accordance with the moving speed V, and the width of each of the sintering carts 210a to the sintering carts 210e is W, and the labels 220a and 220b are respectively disposed on the sintering cart 210b and the sintering cart 210e. Assuming that the label 220a is disposed at the front end (right side) of the sintering carriage 210b, when the label 220a is adjacent to the reader 230, the reader 230 sends a signal to the processing unit 150, whereby the processing unit 150 can know the current state of the sintering trolley 210b. position. Assuming that the processing unit 150 obtains the signal from the reader 230 in the T1 second, it can be determined that the tail end of the sintering carriage 210b passes through the reader 230 at T1+W/V seconds, and the front end of the sintering cart 210a is sintered. Will be close to the reader 230. Further, at T1 + 2 * W / V seconds, the trailing end of the sintering carriage 210a passes through the reader 230. According to a similar method, the processing unit 150 can calculate when each of the sintering carts passes through the sound pressure microphone, thereby obtaining the sound pressure signal corresponding to each of the sintering carts.

In one embodiment, the RFID tag includes a housing and a protective component surrounding the housing, wherein the housing material comprises Teflon, the purpose of which is to reduce heat transfer effects by Teflon, and the protection component prevents the RFID tag from being protected. Directly impacted to reduce the chance of failure of the positioning function.

In one embodiment, the sound pressure microphone 140 is disposed below the bridge 160 through which the sintering carriage 110 passes. In one embodiment, the sound pressure microphone 140 includes a first microphone disposed on sides A and A' of the bridge 160 near the sides of the sintering carriage and a second microphone above the bridge 160 adjacent the level of the sintering carriage. Please refer to FIG. 3A and FIG. 3B , which are schematic diagrams showing the configuration of a sound pressure microphone according to some embodiments of the present invention. In one embodiment, as shown in FIG. 3A, two first sound pressure microphones 340a ₁ and two first sound pressure microphones 340a ₁ ' are respectively disposed on the bridge 160 near the sides 314 and 314' of the sintering trolley 310. The two sides A and A', and the four second sound pressure microphones 340a ₂ are disposed on the bridge 160 near the level 312 of the sintering carriage 310. However, since the leakage of the sintering trolley is mainly from both sides of the side plate of the sintering trolley, it is less from the material surface. Therefore, in another embodiment, as shown in FIG. 3B, three first sound pressure microphones 340b ₁ and three first sound pressure microphones 340b ₁ ' are disposed adjacent to the sides 314 and 314' of the sintering trolley 310, respectively. The two bridges 160 are on both sides A and A', and the two second sound pressure microphones 340b ₂ are disposed on the bridge 160 near the surface 312 of the sintering carriage 310. In a specific example, the distance between the first sound pressure microphone 340b ₁ and the first sound pressure microphone 340b ₁ ' disposed on both sides A and A' of the bridge 160 and the sintering trolley 310 is about 40 cm to about 60 cm. The distance between the second sound pressure microphone 340b ₂ disposed on the bridge 160 and the sintering carriage 310 is also about 40 cm to about 60 cm.

As described above, the processing unit 150 can obtain the plurality of sound pressure signals corresponding to each of the sintering carts 110 according to the position information of the sintering trolley 110 obtained above. When the sound pressure signal is larger, it indicates that the sintering trolley 110 has a higher probability of air leakage. The processing unit 150 may calculate the number of times that the sound pressure signal corresponding to each of the sintering carts 110 exceeds the first threshold value, and select one of the sintering carts 110 according to the number of times corresponding to each of the sintering carts 110. This first threshold may be, for example, 100 decibels, but the invention is not limited thereto. Since each sintering trolley 110 takes a period of time to pass the sound pressure microphone 140 located in the bridge 160, the sound pressure signal corresponding to each of the sintering trolleys 110 will have a specific length of time, for example, T seconds, if the sound pressure microphone 140 The sampling frequency is S, and the sound pressure signal corresponding to each sintering trolley 110 has T*S sampling points. In some embodiments, the average value of the sound pressure signals of the N sampling points may be calculated first, and then it is determined whether the value is greater than the first threshold value, where N is a positive integer. Or it can be judged whether the sound pressure signal at each sampling point is greater than the first threshold value. On the other hand, the sintering trolley 110 repeats the overpass 160, and each time the bridge 160 passes, a sound pressure signal can be obtained. Therefore, the average value of the multi-segment sound pressure signal can be calculated and compared with the first threshold value. After calculating the number of times the sound pressure signal is greater than the first threshold value, the sintering trolleys 110 may be sorted according to the number of times (large to small), and one or more sintering trolleys 110 ranked first are selected, and the sintering trolleys 110 are compared. There may be a situation of air leakage. In another embodiment, after the number of times is calculated, it may be determined whether the number of times is greater than a predetermined number of times (for example, 1 time, 5 times, 10 times, 100 times, etc., and the invention is not limited thereto). Next, one or more sintering carts 110 that are greater than a preset number of times are selected. After one or more sintering trolleys 110 are selected, an alarm may be directly issued to notify the relevant personnel, or the sintering trolleys 110 may be placed on the watch list, and the sintering trolleys 110 in the observation list may be preferentially processed when the maintenance is to be performed later. The present invention is not limited to what steps to perform after selecting the sintering trolley 110.

The step of determining whether the sound pressure signal exceeds the first threshold value can be applied to the sound pressure signal obtained by any one of the microphones, or the sound pressure signals obtained by the plurality of microphones are averaged first, and then the first threshold is determined. value. Specifically, in the embodiment of FIGS. 3A and 3B, the sound pressure signal from the first microphone 340b ₁ is referred to as a first sound pressure signal, and the sound pressure signal from the second microphone 340b ₂ is referred to as a second Sound pressure signal. FIG. 3C is a waveform diagram showing first/second sound pressure signals according to an embodiment. Referring to FIG. 3C, the first sound pressure signal 371 and the second sound pressure signal 372 correspond to the same sintering trolley. For the sake of simplicity, FIG. 3C only shows the first sound pressure signal 371 and the second sound pressure signal 372. And omitting other first/second sound pressure signals. In some embodiments, processing unit 150 may calculate an average (also referred to as a first average) of all sound pressure signals 371, 372 at the same time point (eg, time point 373) during period 370, thus each during period 370 There will be a first average at each point in time. Processing unit 150 may calculate the number of times (also referred to as the first number of times) that the first average is greater than the first threshold during period 370. If the first number is larger, it means that the sintering trolley has a higher probability of air leakage. The processing unit 150 may sort the sintering carts according to the first number of times corresponding to each of the sintering carts to achieve a first order (eg, from large to small), and the more the sorting sintering cart is sorted, the more likely it is to have air leakage.

On the other hand, the processing unit 150 may calculate the number of times the first sound pressure signal 371 of each sintering trolley is greater than the second threshold value during the period 370, and add the total number of times as the second number of times. In this embodiment, the second threshold value is the same as the first threshold value (both 100 decibels), but in other embodiments the second threshold value may also be different from the first threshold value. The processing unit 150 may sort the sintering carts according to the second number of times corresponding to each of the sintering carts to obtain a second sequence (for example, from large to small), and the sintering cart that is sorted on the front side is more likely to have air leakage.

In general, when the air leakage of the sintering trolley is severe, the effective wind speed on the material surface of the sintering trolley is relatively small, that is, the effective air volume of the sintering trolley material surface is inversely related to the air leakage degree. Therefore, the sintering trolley air leakage warning system can optionally include an anemometer to obtain the wind speed signal. Please refer to FIG. 4 , which is a schematic diagram showing the configuration of a sintering trolley 410 according to an embodiment of the invention. In an embodiment, the anemometer 480 is disposed on a specific bellows, wherein the bellows is in front of or behind the flyover and near the surface 412 of the sintering trolley 410, when the sintering trolley passes through the bellows, The wind speed signal of this sintering trolley. For example, the effective wind 472 passing through the surface 412 of the sintering trolley 410 can be detected by the anemometer 480. However, when the sintering trolley has an air leakage condition, there is a portion of the ineffective wind that does not pass through the surface 412 of the sintering trolley 410. 474 or invalid wind 476, while invalid wind 474 and invalid wind 476 are not detected by anemometer 480. In one embodiment, the third threshold value is set as the effective wind speed standard of the sintering trolley, and the processing unit calculates a third number of times that the wind speed signal corresponding to each sintering trolley is less than the third threshold value. In an example, sorting is performed according to the third number of times to obtain the third order.

In some embodiments, the integration of the first sequence, the second sequence, and the third sequence described above, or a combination thereof, may be selected to select a leaking sintering trolley for higher accuracy results. In one embodiment, a plurality of first sintering trolleys are selected from the first sequence, a plurality of second sintering trolleys are selected from the second sequence, and a plurality of third sintering trolleys are selected from the third sequence, and then The sintering trolley is selected based on the intersection between the first sintering trolley, the second sintering trolley, and the third sintering trolley. In an example, the sintering trolley air leakage warning system can sort out the fourth sequence of the overall air leakage severity according to the above intersection, and can also selectively issue a warning message.

Please refer to FIG. 5 , which is a partial flow chart of a method for warning an air leakage of a sintering trolley according to an embodiment of the invention. The early warning method for the leakage of the sintering trolley is applicable to the computer system. First, step 510 is performed to obtain location information through the reader. In one embodiment, at least one tag is disposed on at least one of the sintering carts and the tag is identified by the reader to obtain positional information of the sintering cart. In one embodiment, the position information of each of the sintered trolleys is obtained based on the position information of the specific sintering trolley obtained by the reader and the moving speed and width of the sintering trolley. Then, in step 520, the sound pressure signal is obtained through the sound pressure microphone. In an embodiment, as described above, a plurality of first microphones and at least one second microphone may be respectively disposed on both sides of the bridge and the flyover to obtain the first sound pressure signal and the second sound pressure signal of the sintering trolley respectively. . Then, in step 530, the sound pressure signal corresponding to each sintering trolley is obtained according to the position information obtained in step 510 and the sound pressure signal obtained in step 520.

Next, in step 540, the number of times that the sound pressure signal corresponding to each sintering trolley exceeds the first threshold value is calculated. In one embodiment, step 540 includes calculating a first average of the sound pressure signals at the same point in time for each of the sintering carts and calculating a first number of times the first average is greater than the first threshold. In another embodiment, the first sound pressure signal obtained by the first microphone is calculated to be greater than the second threshold value for a second time period.

Then, step 550 is performed to select one of the sintering trolleys according to the number of times each sintering trolley corresponds. In an embodiment, step 550 may sort the selected sintering carts, for example, sorting according to the first number of times described above to achieve the first order. In another embodiment, the ranking is performed according to the second number of times described above to obtain the second order. In one embodiment, a plurality of first sintering trolleys are selected according to the first sequence, and a plurality of second sintering trolleys are selected according to the second sequence, and an intersection of the first sintering trolley and the second sintering trolley is obtained to be arranged. The severity of the air leakage of the sintering trolley is ranked and a warning message can be issued accordingly. In an embodiment, the anemometer is selectively disposed to obtain the wind speed signal of the material surface of the sintering trolley, and according to the above method, the third time that the wind speed signal of each sintering trolley is less than the third threshold value in the same period is calculated. . Similarly, the sequencing of the sintering trolley is performed according to the third number to obtain the third sequence. In one embodiment, a plurality of third sintering trolleys are selected according to the third order, and an intersection of the first sintering trolley, the second sintering trolley, and the third sintering trolley is selected to obtain an overall air leakage severity ranking of the sintering trolley, and Accordingly, a warning message is issued to make a corresponding countermeasure, for example, to replace a plurality of sintering trolleys with severe air leakage.

The following examples are used to illustrate the application of the present invention, and are not intended to limit the present invention. Those skilled in the art can make various changes without departing from the spirit and scope of the present invention. Retouching.

Example 1

Set up eight sound pressure microphones under the bridge, six of which are set up on the sides of the side plates of the sintering trolley (the first microphone), and the other two sound pressure microphones are placed close to the material of the sintering trolley. Face (second microphone). A radio frequency identification tag is arranged on a plurality of sintering trolleys, and position information of each sintering trolley is obtained and numbered by a radio frequency identification reader.

Set the sound pressure threshold (including the first threshold and the second threshold described above) to 100 decibels. First, the average of the first sound pressure signal and the second sound pressure signal of each sintering trolley is calculated. Next, the number of alarms for which the average sound pressure of each sintering trolley is greater than 100 decibels is recorded and sorted, as shown in Table 1 below.

Table 1

Record the number of alarms for each first sound pressure signal provided by each sound pressure microphone of each sintering trolley greater than 100 decibels, add up all alarm times, and sort them, as shown in Table 2 below.

According to the first order and the second order of Tables 1 and 2, the intersection is taken as the severity of the leakage of the sintering trolley, as shown in Table 3.

Example 2

Embodiment 1 is a ranking of the severity of air leakage of a sintering trolley by only a sound pressure microphone. However, in order to obtain a more comprehensive ranking of the severity of the leakage of the sintering trolley, the effective wind speed can be measured for the material of the sintering trolley. Therefore, Embodiment 2 is directed to the sintering trolley of Embodiment 1, and an additional six anemometers are disposed on the wind box, and the wind box is in front of the flyover to measure the wind speed on the surface of the sintering trolley, and is similar. Methods are compared and sorted.

The wind speed threshold is set to 0.4 m/s (ie, the third threshold value described above), and the number of alarms of the wind speed of each sintering trolley is less than 0.4 m/s, and the number of alarms is sorted, as shown in Table 4 below.

According to the results of Tables 3 and 4, the intersections are taken as shown in Table 5 below. Table 5 shows the overall sound pressure signal and the surface wind speed signal, and the ranking of the overall air leakage of the sintered trolley obtained.

According to the first embodiment and the second embodiment, the air leakage warning system and the early warning method of the sintering trolley of the present invention can sort out the number of times the sintering trolley issues an alarm by comparing the average value of the sound pressure signal and the sound pressure signal with the set threshold value. In order to know the severity of the leakage of the sintering trolley. Furthermore, it is also possible to selectively sort by comparing the wind speed signal with the set threshold value, and to comprehensively sort the sound pressure signals to obtain a more comprehensive ranking of the overall air leakage severity of the sintering trolley.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

Claims (13)

 A sintering trolley air leakage early warning system comprises: a plurality of sintering trolleys; at least one label disposed on one of the sintering trolleys; a reader for identifying the at least one label to obtain a position information; a plurality of sounds Pressing a microphone to obtain a plurality of sound pressure signals respectively; and a processing unit for obtaining the sound pressure signals corresponding to each of the sintering carts according to the position information, wherein the processing unit calculates each of the sintering trolleys Corresponding to the sound pressure signal exceeding a first threshold value, and selecting one of the sintering trolleys according to the number of times corresponding to each of the sintering trolleys.    The sintering trolley air leakage warning system of claim 1, wherein the at least one tag is a radio frequency identification tag, and the radio frequency identification tag comprises a casing and a protection component surrounding the casing, the casing material comprising iron Fluoro, and the reader is a radio frequency identification reader.    The sintering trolley air leakage warning system according to claim 1, wherein the processing unit obtains the sound pressure signals corresponding to each of the sintering trolleys according to the position information, a speed of the sintering trolleys, and a width. .    The sintering trolley air leakage early warning system according to claim 1, wherein for each of the sintering trolleys, the processing unit calculates a first average of the sound pressure signals at the same time point in a period, and calculates The first average is greater than the first threshold of the first threshold, and the processing unit sorts the sintering trolleys according to the first number of times corresponding to each of the sintering trolleys to obtain a first order.    The sintering trolley air leakage warning system of claim 4, wherein the sound pressure microphone comprises a plurality of first microphones and at least one second microphone, the first microphones being disposed on both sides of the sintering trolleys The at least one second microphone is disposed on a surface of the sintering trolleys, and the first microphones obtain a plurality of first sound pressure signals, and for each of the sintering trolleys, calculate the first sound pressure signals A second number of times greater than a second threshold value during the period, and the processing unit sorts the sintering carts according to the second number of times corresponding to each of the sintering carts to obtain a second sequence.    The sintering trolley air leakage warning system according to claim 5, further comprising at least one anemometer for obtaining a wind speed signal, and for each of the sintering trolleys, the processing unit is configured to calculate the wind speed signal during the period a third number of times less than a third threshold value, and the processing unit sorts the sintering trolleys according to the third number of times corresponding to each of the sintering trolleys to obtain a third sequence.    The sintering trolley air leakage early warning system according to claim 6, wherein the processing unit is configured to select a plurality of first sintering trolleys from the first sequence, and select a plurality of second sintering from the second sequence. a plurality of third sintering trolleys are selected from the third sequence, and an intersection between the first sintering trolleys, the second sintering trolleys, and the third sintering trolleys is selected, and one intersection is issued according to the intersection. Warning message.    The invention discloses a method for premature leakage of a sintering trolley, which is suitable for a computer system, wherein at least one label is disposed in one of a plurality of sintering trolleys, and the early warning method for the leakage of the sintering trolley comprises: obtaining a position information through a reader; The sound pressure microphone obtains a plurality of sound pressure signals; and the sound pressure signals corresponding to each of the sintering carts are obtained according to the position information; and the sound pressure signals corresponding to each of the sintering carts are calculated to exceed a first threshold One of the number of values; and one of the sintering carts is selected based on the number of times each of the sintering carts corresponds to.    The method for warning of leakage of a sintering trolley according to claim 8, wherein the at least one tag is a radio frequency identification tag, and the reader is a radio frequency identification reader, and each of the sintering trolleys is obtained according to the position information. The step of the corresponding sound pressure signals includes: obtaining the sound pressure signals corresponding to each of the sintering trolleys according to the position information, a speed of the sintering trolleys, and a width.    The method for predicting an air leakage early warning of the sintering trolley according to the eighth aspect of the invention, wherein the step of calculating the number of the sound pressure signals corresponding to each of the sintering trolleys exceeding the first threshold value comprises: for each of the Sintering the trolley, calculating a first average of the sound pressure signals at the same time point in a period, and calculating a first number of times during which the first average is greater than the first threshold value, and the sintering trolley is leaking The warning method further comprises: sorting the sintering trolleys according to the first number of times corresponding to each of the sintering trolleys to obtain a first sequence.    The method of claim 10, wherein the sound pressure microphone comprises a plurality of first microphones and at least one second microphone, the first microphones being disposed on opposite sides of the sintering trolleys. The at least one second microphone is disposed on the surface of the sintering trolleys, and the first microphones obtain a plurality of first sound pressure signals, and the sintering trolley air leakage warning method further comprises: calculating, for each of the sintering trolleys The first sound pressure signal is greater than a second threshold value for a second number of times during the period; and the sintering trolleys are sorted according to the second number of times corresponding to each of the sintering carts to obtain a second sequence .    The method for predicting air leakage of a sintering trolley according to claim 11, wherein at least one anemometer is used to obtain a wind speed signal, and the method for warning the air leakage of the sintering trolley further comprises: calculating, for each of the sintering trolleys, the wind speed signal a third number of times less than a third threshold value during the period; and sorting the sintering carts according to the third number of times corresponding to each of the sintering carts to obtain a third sequence.    The method for pre-igniting the leakage of the sintering trolley according to claim 12, further comprising: selecting a plurality of first sintering trolleys from the first sequence, and selecting a plurality of second sintering trolleys from the second sequence, Selecting a plurality of third sintering trolleys in the third sequence; and selecting an intersection of the first sintering trolleys, the second sintering trolleys, and the third sintering trolleys, and issuing a warning message according to the intersection.