A concealed underground fire pool detection device

Abstract

The application discloses a concealed underground fire pool detection device, which comprises a mobile base body, a controller and a photoelectric sensor.

Description

TECHNICAL FIELD

[0001] The application relates to a concealed underground fire pool detection device. BACKGROUND

[0002] The fire pool refers to an artificial storage facility for fixed or mobile fire pump water suction, and when municipal water supply pipe network or house introduction pipe cannot meet the indoor and outdoor fire water supply design flow, corresponding fire pools should be set.

[0003] When the outdoor water supply pipe network can guarantee the outdoor fire water amount, the effective capacity of the fire pool should meet the requirement of the indoor fire water amount in the fire duration time; when the outdoor water supply pipe network cannot guarantee the outdoor fire water amount, the effective capacity of the fire pool should meet the requirement of the sum of the indoor fire water amount and the insufficient part of the outdoor fire water amount in the fire duration time.

[0004] Generally, the fire pool configured for civil buildings is a concealed underground fire pool, and the capacity, water level, pressure and other related parameters cannot be effectively monitored from the outside, so that the leakage, pipeline corrosion, bottom sediment and other phenomena of the concealed underground fire pool cannot be analyzed and determined, and the actual change condition of the fire pool cannot be accurately mastered, so that the problem of insufficient water storage of the fire pool may occur in actual use, and great safety hazards exist. SUMMARY

[0005] The application embodiment provides a concealed underground fire pool detection device, which has a reasonable structure, is based on the ultrasonic feedback attenuation detection principle, accurately detects the real-time capacity, real-time water level and real-time pressure of the underground fire pool according to the change of the ultrasonic feedback attenuation rate parameter, enables the user to accurately master the actual change condition of the fire pool, analyzes and determines the leakage, pipeline corrosion, bottom sediment and other phenomena of the fire pool, guarantees the water supply of the underground fire pool and daily maintenance, eliminates the safety hazards of the underground fire pool, and solves the problems in the prior art.

[0006] The technical scheme adopted by the application to solve the above technical problems is:

[0007] A concealed underground fire pool detection device, the detection device comprises:

[0008] The mobile base includes a first base and a second base arranged in parallel, a universal wheel is arranged at the lower part of the first base, a lead screw motor is arranged inside the first base, a lead screw is arranged between the first base and the second base and is configured with the lead screw motor, an ultrasonic detection assembly is threadedly connected to the lead screw, the ultrasonic detection assembly is arranged in a horizontal direction, the ultrasonic detection assembly is used for emitting ultrasonic detection signals to an underground fire pool and receiving corresponding ultrasonic feedback attenuation rate parameters, and the related parameters of the underground fire pool are detected according to the change of the ultrasonic feedback attenuation rate; the ultrasonic detection assembly includes an ultrasonic transmitter and an ultrasonic receiver;

[0009] A controller is arranged inside the second base, the controller is electrically connected with the ultrasonic detection assembly through a command input device to receive the ultrasonic feedback attenuation rate parameters, and the controller is connected with the lead screw motor through a driver to drive the ultrasonic detection assembly to move in a vertical direction on the lead screw; an optical sensor is arranged at one end of the first base close to the underground fire pool, the optical sensor is used for detecting the distance parameter between the ultrasonic detection assembly and the underground fire pool, and the optical sensor is electrically connected with the controller through an AD converter.

[0010] The detection method of the detection device includes the following steps:

[0011] S1, a set of detection devices are arranged at both ends of the underground fire pool respectively, the distance between the two sets of detection devices and the underground fire pool is the same, the controller of one set of detection devices transmits a driving command to the lead screw motor to make the ultrasonic detection assembly align with the highest water level of the underground fire pool, and the controller of the other set of detection devices transmits a driving command to the lead screw motor to make the ultrasonic detection assembly align with the lowest water level of the underground fire pool;

[0012] S2, the optical sensor detects the distance between the detection device and the underground fire pool as D, the controllers of the two sets of detection devices simultaneously transmit driving commands to the lead screw motor to make the ultrasonic detection assemblies of the two sets of detection devices move in the directions from top to bottom and from bottom to top respectively, the ultrasonic detection assemblies emit ultrasonic detection signals to receive ultrasonic feedback attenuation rate parameters and form evaluation marker points in combination with time nodes and height changes of the ultrasonic detection assemblies during the movement;

[0013] S3, the evaluation marker points are transmitted to the controller to construct an evaluation matrix A in combination with the distance D between the detection device and the underground fire pool;

[0014] S4, a positive parameter is introduced, the evaluation matrix A is calculated through an operation function, and a real-time corresponding ultrasonic feedback change waveform of the underground fire pool is obtained;

[0015] S5, set the standard ultrasonic feedback change waveform and the real-time corresponding ultrasonic feedback change waveform of the underground fire pool is analyzed and detected, the actual use of the underground fire pool is obtained, and the safety hidden danger of the underground fire pool is eliminated.

[0016] The photoelectric sensor detects the distance between the detection device and the underground fire pool as D, the controllers of the two groups of detection devices simultaneously transmit driving instructions to the lead screw motor, and the ultrasonic detection assemblies of the two groups of detection devices respectively move in the upward and downward directions, and the ultrasonic detection assemblies emit ultrasonic detection signals and receive ultrasonic feedback attenuation rate parameters during the movement, including the following steps:

[0017] S2.1, set multiple uniform time nodes, and adjust the displacement of the lead screw motor at each time node to change the height change of the ultrasonic detection assembly;

[0018] S2.2, respectively perform ultrasonic emission and reception at each time node to obtain corresponding ultrasonic feedback attenuation rate parameters;

[0019] S2.3, adjust the time interval of the time node and the distance between the detection device and the underground fire pool, repeat the above steps S2.1 and S2.2 three times, construct a three-dimensional coordinate system of the time node, the ultrasonic feedback attenuation rate parameter and the height change of the ultrasonic detection assembly, and obtain four evaluation marker points in the three-dimensional coordinate system.

[0020] Introduce a positive parameter, calculate the evaluation matrix A through an operation function, and obtain the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, including the following steps:

[0021] S4.1, determine the threshold range of the positive parameter, and build the operation function as:

[0022]

[0023] Wherein, D i is the distance between the detection device and the underground fire pool at the i-th adjustment, H i is the average value of the height change of the ultrasonic detection assembly at the i-th adjustment, and T is the time interval standard value of the time node.

[0024] S4,2, combine the positive parameter with the value calculated by the operation function to obtain the coordinate parameters of the ultrasonic feedback change waveform corresponding to the four evaluation marker points, that is:

[0025] X n →(positive parameter λ, F(X i )), Y n →(positive parameter λ, F(Y i ))

[0026] The abscissa data is defined as the numerical value of the evaluation matrix, and the ordinate data is defined as the ultrasonic feedback attenuation rate parameter change rate;

[0027] S4.3, four coordinate points are determined in the coordinate system to draw the ultrasonic feedback change waveform.

[0028] The standard ultrasonic feedback change waveform is set, and the real-time corresponding ultrasonic feedback change waveform of the underground fire pool is analyzed and detected to obtain the actual use condition of the underground fire pool and eliminate the safety hazards of the underground fire pool, including the following steps:

[0029] S5.1, the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool is defined as low-order data, the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool and the fire water is defined as high-order data, and the standard ultrasonic feedback change waveform is drawn;

[0030] S5.2, an inflection point is set in the standard ultrasonic feedback change waveform, and the coordinate data of the inflection point is obtained;

[0031] S5.3, the inflection point coordinates are brought into the actual ultrasonic feedback change waveform, if the inflection point coordinates are below the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too high and exceeds the highest water level of the underground fire pool; if the inflection point coordinates are above the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too low and is lower than the lowest water level of the underground fire pool, and the fire water source is insufficient.

[0032] The model of the controller is STM32F103C8T6, 64 pins are arranged on the controller, the controller is connected with the command input device through the fourth pin, the controller is connected with the AD converter through the fifteenth pin, and the controller is connected with the driver through the thirty-eighth pin.

[0033] The model of the command input device is TLP290, four pins are arranged on the command input device, the first pin of the command input device is connected with the ultrasonic detection assembly, the ninth resistor, the tenth resistor and the fourth capacitor are connected in parallel between the first pin and the second pin of the command input device, the fifth capacitor and the eighth resistor are connected in parallel between the third pin and the fourth pin of the command input device, and the third pin of the command input device is connected with the fourth pin of the controller.

[0034] The model of the AD converter is AD8551, eight pins are arranged on the AD converter, the AD converter is connected with the fifteenth pin of the controller through the sixth pin, and the AD converter is connected with the photoelectric sensor through the third pin.

[0035] The model of the driver is ULN2003, 16 pins are arranged on the driver, the first pin of the driver is connected with the thirty-eighth pin of the controller, the first relay is connected on the sixteenth pin of the driver, the first resistor and the first diode are arranged in parallel on the first relay, the driving interface is arranged on the first relay, and the driving interface is connected with the lead screw motor.

[0036] The ultrasonic detection assembly moves up and down through the lead screw motor and the lead screw, the ultrasonic detection assembly emits ultrasonic detection signals to the underground fire pool, receives corresponding ultrasonic feedback attenuation rate parameters, and detects related parameters of the underground fire pool according to the change of the ultrasonic feedback attenuation rate; the controller and the ultrasonic detection assembly are electrically connected through the instruction input device to receive the ultrasonic feedback attenuation rate parameters; the distance parameters between the ultrasonic detection assembly and the underground fire pool are detected through the photoelectric sensor; the ultrasonic detection assemblies of the two groups of detection devices move in the upward and downward directions respectively through the controller transmitting driving instructions to the lead screw motor at the same time, the two groups of detection devices are set to be compared, and the two groups of associated data are collected to avoid large errors, and the opposite directions are used to eliminate the relative interference between the opposite ultrasonic waves, further improve the accuracy, and have the advantages of safety, reliability, simplicity and practicality. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the application.

[0038] Figure 2 It is a working schematic diagram of the application.

[0039] Figure 3 It is a height change diagram of the ultrasonic detection assembly of the application.

[0040] Figure 4 It is a coordinate diagram of the evaluation mark point of the application.

[0041] Figure 5 It is an ultrasonic feedback change waveform diagram of the application.

[0042] Figure 6 It is a working principle diagram of the application.

[0043] Figure 7 It is an electrical principle diagram of the controller of the application.

[0044] Figure 8 It is an electrical principle diagram of the instruction input device of the application.

[0045] Figure 9 It is an electrical principle diagram of the driver of the application.

[0046] Figure 10 The electrical schematic diagram of the AD converter of the present application.

[0047] In the figure, 1 is a first base body, 2 is a second base body, 3 is a lead screw, 4 is a universal wheel, and 5 is a photoelectric sensor. DETAILED DESCRIPTION

[0048] To clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments and in conjunction with the accompanying drawings.

[0049] As shown in Figures 1-10 A concealed underground fire pool detection device, the detection device comprises:

[0050] A moving base body, the moving base body comprises a first base body and a second base body arranged in parallel, a universal wheel is arranged at the lower part of the first base body, a lead screw motor is arranged inside the first base body, a lead screw configured with the lead screw motor is arranged between the first base body and the second base body, and an ultrasonic detection assembly is threadedly connected to the lead screw, the ultrasonic detection assembly is arranged in the horizontal direction, the ultrasonic detection assembly is used to emit ultrasonic detection signals to the underground fire pool and receive corresponding ultrasonic feedback attenuation rate parameters, and the related parameters of the underground fire pool are detected according to the change of the ultrasonic feedback attenuation rate; the ultrasonic detection assembly comprises an ultrasonic transmitter and an ultrasonic receiver;

[0051] A controller is arranged inside the second base body, the controller is electrically connected with the ultrasonic detection assembly through a command input device to receive the ultrasonic feedback attenuation rate parameters, and the controller is connected with the lead screw motor through a driver to drive the ultrasonic detection assembly to move in the vertical direction on the lead screw; a photoelectric sensor is arranged at one end of the first base body close to the underground fire pool, the photoelectric sensor is used to detect the distance parameters between the ultrasonic detection assembly and the underground fire pool, and the photoelectric sensor is electrically connected with the controller through an AD converter.

[0052] The detection method of the detection device comprises the following steps:

[0053] S1, a group of detection devices are arranged at both ends of the underground fire pool respectively, the distance between the two groups of detection devices and the underground fire pool is the same; the controller of one group of detection devices transmits a driving command to the lead screw motor, so that the ultrasonic detection assembly is aligned with the highest water level of the underground fire pool; the controller of the other group of detection devices transmits a driving command to the lead screw motor, so that the ultrasonic detection assembly is aligned with the lowest water level of the underground fire pool;

[0054] S2, the photoelectric sensor detects that the distance between the detection device and the underground fire pool is D, the controller of the two sets of detection devices simultaneously transmits driving instructions to the lead screw motor, so that the ultrasonic detection assemblies of the two sets of detection devices respectively act according to the moving direction from top to bottom and from bottom to top, and the ultrasonic detection assemblies emit ultrasonic detection signals to receive ultrasonic feedback attenuation rate parameters in the moving process and combine time nodes and height changes of the ultrasonic detection assemblies to form evaluation marker points;

[0055] S3, the evaluation marker points are transmitted to the controller, and an evaluation matrix A is constructed in combination with the distance D between the detection device and the underground fire pool;

[0056] S4, introducing a positive parameter, calculating the evaluation matrix A through an operation function, and obtaining the real-time corresponding ultrasonic feedback change waveform of the underground fire pool;

[0057] S5, setting a standard ultrasonic feedback change waveform and analyzing and detecting the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, obtaining the actual use condition of the underground fire pool, and eliminating the safety hidden danger of the underground fire pool.

[0058] The photoelectric sensor detects that the distance between the detection device and the underground fire pool is D, the controller of the two sets of detection devices simultaneously transmits driving instructions to the lead screw motor, so that the ultrasonic detection assemblies of the two sets of detection devices respectively act according to the moving direction from top to bottom and from bottom to top, and the ultrasonic detection assemblies emit ultrasonic detection signals to receive ultrasonic feedback attenuation rate parameters including the following steps:

[0059] S2.1, setting a plurality of uniform time nodes, adjusting the displacement of the lead screw motor at each time node to change the height change of the ultrasonic detection assembly;

[0060] S2.2, ultrasonic emission and reception are respectively carried out at each time node, and corresponding ultrasonic feedback attenuation rate parameters are obtained;

[0061] S2.3, adjusting the time interval of the time node and the distance between the detection device and the underground fire pool, repeating the above steps S2.1 and S2.2 three times, constructing a three-dimensional coordinate system of the time node, the ultrasonic feedback attenuation rate parameter and the height change of the ultrasonic detection assembly, and obtaining four evaluation marker points in the three-dimensional coordinate system.

[0062] Introducing a positive parameter, calculating the evaluation matrix A through an operation function, and obtaining the real-time corresponding ultrasonic feedback change waveform of the underground fire pool including the following steps:

[0063] S4.1, determining the threshold range of the positive parameter, and building the operation function as:

[0064]

[0065] wherein, D i is the distance between the detection device and the underground fire pool at the i th adjustment, H i is the average value of the height change of the ultrasonic detection assembly at the i th adjustment, T is the time node time interval standard value;

[0066] S4,2, the positive argument is combined with the value calculated by the operation function to obtain the coordinate parameters of the ultrasonic feedback change waveform corresponding to the four evaluation marker points, that is:

[0067] X n →(positive argument λ, F(X i )), Y n →(positive argument λ, F(Y i ))

[0068] Wherein, the abscissa data is defined as the value of the evaluation matrix, and the ordinate data is defined as the ultrasonic feedback attenuation rate parameter change rate;

[0069] S4.3, determine four coordinate points in the coordinate system to draw the ultrasonic feedback change waveform.

[0070] The standard ultrasonic feedback change waveform is set to analyze and detect the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, to obtain the actual use condition of the underground fire pool, and to eliminate the safety hazards of the underground fire pool, including the following steps:

[0071] S5.1, define the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool as low-order data, define the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool and the fire water as high-order data, and draw the standard ultrasonic feedback change waveform;

[0072] S5.2, set an inflection point in the standard ultrasonic feedback change waveform, and obtain the coordinate data of the inflection point;

[0073] S5.3, bring the inflection point coordinates into the actual ultrasonic feedback change waveform, if the inflection point coordinates are below the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too high, exceeding the highest water level of the underground fire pool; if the inflection point coordinates are above the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too low, below the lowest water level of the underground fire pool, and the fire water source is insufficient.

[0074] The model of the controller is STM32F103C8T6, and 64 pins are arranged on the controller, the controller is connected with the command input device through the fourth pin, the controller is connected with the AD converter through the fifteenth pin, and the controller is connected with the driver through the thirty-eighth pin.

[0075] The model of the instruction inputter is TLP290, four pins are arranged on the instruction inputter, the first pin of the instruction inputter is connected with the ultrasonic detection assembly, the ninth resistor, the tenth resistor and the fourth capacitor are connected in parallel between the first pin and the second pin of the instruction inputter, the fifth capacitor and the eighth resistor are connected in parallel between the third pin and the fourth pin of the instruction inputter, and the third pin of the instruction inputter is connected with the fourth pin of the controller.

[0076] The model of the AD converter is AD8551, eight pins are arranged on the AD converter, the AD converter is connected with the fifteenth pin of the controller through the sixth pin, and the AD converter is connected with the photoelectric sensor through the third pin.

[0077] The model of the driver is ULN2003, sixteen pins are arranged on the driver, the driver is connected with the thirty-eighth pin of the controller through the first pin, the first relay is connected to the sixteenth pin of the driver, the first resistor and the first diode are connected in parallel on the first relay, the driving interface is arranged on the first relay, and the driving interface is connected with the lead screw motor.

[0078] The working principle of the concealed underground fire pool detection device in the embodiment of the application is that, based on the ultrasonic feedback attenuation detection principle, under the integrated control of the controller, in combination with multiple types of electrical elements and algorithms, the real-time capacity, the real-time water level and the real-time pressure of the underground fire pool are accurately detected according to the change of the ultrasonic feedback attenuation rate parameter, so that the user can accurately master the actual change of the fire pool, and then analyze and determine the leakage, pipeline corrosion, bottom sediment and other phenomena of the fire pool, ensure the sufficient water supply and daily maintenance of the underground fire pool, and eliminate the safety hazards of the underground fire pool.

[0079] Since the principle adopted in the application is ultrasonic feedback attenuation detection, in actual application, a set of detection devices need to be arranged at both ends of the underground fire pool for analysis and determination, and the two sets are mutually contrasted, and the mutual direction is simultaneously operated, so that the sound wave interference between the two ultrasonic detection assemblies can be eliminated to a certain extent, and more accurate data can be obtained.

[0080] In the overall scheme, the detection device comprises: a mobile base body comprising a first base body and a second base body arranged in parallel, a universal wheel arranged at the lower part of the first base body, a lead screw motor arranged inside the first base body, a lead screw arranged between the first base body and the second base body and configured with the lead screw motor, and an ultrasonic detection assembly threadedly connected to the lead screw and arranged in the horizontal direction, the ultrasonic detection assembly being used to emit ultrasonic detection signals to the underground fire pool and receive corresponding ultrasonic feedback attenuation rate parameters, and the related parameters of the underground fire pool being detected according to the change of the ultrasonic feedback attenuation rate; the ultrasonic detection assembly comprises an ultrasonic transmitter and an ultrasonic receiver; a controller arranged inside the second base body, the controller being electrically connected with the ultrasonic detection assembly through an instruction input device to receive the ultrasonic feedback attenuation rate parameters; the controller being connected with the lead screw motor through a driver to drive the ultrasonic detection assembly to move in the vertical direction on the lead screw; an optical sensor arranged at one end of the first base body close to the underground fire pool, the optical sensor being used to detect the distance parameter between the ultrasonic detection assembly and the underground fire pool, and the optical sensor being electrically connected with the controller through an AD converter; thus, the overall hardware circuit is formed, and the automatic ultrasonic feedback detection of the underground fire pool can be realized by relying on the overall hardware circuit, and the staff only needs to push the overall detection device to the designated position, adjust the distance between the detection device and the underground fire pool, and adjust the initial positions of the two ultrasonic detection assemblies, and all the remaining steps can be automatically controlled and adjusted.

[0081] Correspondingly, the detection method of the detection device comprises the following steps: a set of detection devices are arranged at both ends of the underground fire pool, the distances between the two sets of detection devices and the underground fire pool are the same; the controller of one set of detection devices transmits a driving instruction to the lead screw motor to make the ultrasonic detection assembly align with the highest water level of the underground fire pool; the controller of the other set of detection devices transmits a driving instruction to the lead screw motor to make the ultrasonic detection assembly align with the lowest water level of the underground fire pool; the optical sensor detects the distance D between the detection device and the underground fire pool, and the controllers of the two sets of detection devices simultaneously transmit driving instructions to the lead screw motor to make the ultrasonic detection assemblies of the two sets of detection devices move in the upward and downward directions respectively, the ultrasonic detection assemblies emit ultrasonic detection signals and receive ultrasonic feedback attenuation rate parameters during the movement, and the evaluation marker points are formed by combining the time nodes and the height changes of the ultrasonic detection assemblies; the evaluation marker points are transmitted to the controller to construct an evaluation matrix A in combination with the distance D between the detection device and the underground fire pool; a positive parameter is introduced, the evaluation matrix A is calculated through an operation function to obtain the real-time corresponding ultrasonic feedback change waveform of the underground fire pool; the standard ultrasonic feedback change waveform is set to analyze and detect the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, the actual use condition of the underground fire pool is obtained, and the safety hazards of the underground fire pool are eliminated.

[0082] In the present application, multiple types of detection parameters are fused, and corresponding function algorithms are combined to draw the change waveform of the ultrasonic feedback. By analyzing the change waveform of the ultrasonic feedback, the water level, capacity and pressure change of the underground fire pool can be directly obtained. Then, according to the parameter change and the experience of the staff, the abnormal condition of the underground fire pool can be determined.

[0083] Preferably, the photoelectric sensor detects the distance D between the detection device and the underground fire pool. The controllers of the two groups of detection devices simultaneously transmit driving instructions to the lead screw motor, so that the ultrasonic detection assemblies of the two groups of detection devices move in the upward and downward directions, respectively. The ultrasonic detection assemblies emit ultrasonic detection signals and receive ultrasonic feedback attenuation rate parameters during the movement. The steps include: setting multiple uniform time nodes, adjusting the displacement of the lead screw motor at each time node to change the height of the ultrasonic detection assembly; at each time node, ultrasonic emission and reception are performed to obtain the corresponding ultrasonic feedback attenuation rate parameters; the time interval of the time node and the distance between the detection device and the underground fire pool are adjusted, and the steps S2.1 and S2.2 are repeated three times to construct a three-dimensional coordinate system of the time node, the ultrasonic feedback attenuation rate parameter and the height change of the ultrasonic detection assembly, and obtain four evaluation marker points in the three-dimensional coordinate system.

[0084] The control detection experiment with multiple condition changes can ensure the generality and accuracy of the data source, so that the evaluation marker points obtained are more in line with the actual situation.

[0085] Preferably, the positive parameter is introduced, and the evaluation matrix A is calculated through the operation function to obtain the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, including the following steps:

[0086] S4.1, determine the threshold range of the positive parameter, and build the operation function as:

[0087]

[0088] Where, D i is the distance between the detection device and the underground fire pool at the i-th adjustment, H i is the average value of the height change of the ultrasonic detection assembly at the i-th adjustment, and T is the time interval standard value of the time node.

[0089] S4.2, combine the positive parameter with the value calculated by the operation function to obtain the coordinate parameters of the ultrasonic feedback change waveform corresponding to the four evaluation marker points, i.e.:

[0090] X n →(positive parameter λ, F(X i )), Yn → (positive argument λ, F(Y i ))

[0091] Wherein, the abscissa data is defined as the value of the evaluation matrix, and the ordinate data is defined as the parameter change rate of the ultrasonic feedback attenuation rate;

[0092] S4.3, determine 4 coordinate points in the coordinate system to draw the ultrasonic feedback change waveform.

[0093] Generally, the threshold range of the positive argument is (6, 12), and the time interval standard value of the time node is set to 10s-15s. When facing a large volume of underground fire pool, the order of magnitude of the positive argument can be increased for adaptation. When drawing the ultrasonic feedback change waveform, it is necessary to ensure that the waveform curve passes through all the data points to avoid omission.

[0094] Preferably, the standard ultrasonic feedback change waveform is set to analyze and detect the real-time corresponding ultrasonic feedback change waveform of the underground fire pool, obtain the actual use condition of the underground fire pool, and eliminate the safety hazards of the underground fire pool, including the following steps: defining the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool as low-order data, defining the ultrasonic feedback attenuation rate parameter change rate of the inner wall of the underground fire pool and the fire water as high-order data, and drawing the standard ultrasonic feedback change waveform; setting an inflection point in the standard ultrasonic feedback change waveform, obtaining the coordinate data of the inflection point; bringing the inflection point coordinates into the actual ultrasonic feedback change waveform, if the inflection point coordinates are below the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too high, exceeding the highest water level of the underground fire pool; if the inflection point coordinates are above the real-time ultrasonic feedback change waveform, it means that the water level of the underground fire pool is too low, lower than the lowest water level of the underground fire pool, and the fire water source is insufficient.

[0095] When the underground fire pool is in the normal water level interval, the ultrasonic detection assembly moves from top to bottom, and the low-order data is obtained at the beginning of detection; due to the characteristics of ultrasonic waves, the higher the data obtained by feedback is when the ultrasonic detection assembly moves downward; when the ultrasonic detection assembly moves to the water level, the low-order data is converted to high-order data, and the corresponding waveform has a significant climb, and then the waveform data is always within the scope of high-order data, so the corresponding standard ultrasonic feedback change waveform is obtained.

[0096] Correspondingly, another group of detection assemblies will obtain the same waveform set in the opposite direction for comparison to ensure the accuracy of the standard waveform.

[0097] After obtaining the real-time related data of the underground fire pool, the corresponding abnormal condition can be determined according to the experience of the staff.

[0098] For the hardware circuit of the application, the model of the controller is STM32F103C8T6, 64 pins are arranged on the controller, the controller is connected with the instruction input device through the fourth pin, the controller is connected with the AD converter through the fifteenth pin, and the controller is connected with the driver through the thirty-eighth pin.

[0099] The model of the instruction input device is TLP290, four pins are arranged on the instruction input device, the first pin of the instruction input device is connected with the ultrasonic detection assembly, the ninth resistor, the tenth resistor and the fourth capacitor are connected in parallel between the first pin and the second pin of the instruction input device, the fifth capacitor and the eighth resistor are connected in parallel between the third pin and the fourth pin of the instruction input device, the third pin of the instruction input device is connected with the fourth pin of the controller, and corresponding detection data can be accurately and quickly received.

[0100] The model of the driver is ULN2003, 16 pins are arranged on the driver, the driver is connected with the thirty-eighth pin of the controller through the first pin, the first relay is connected to the sixteenth pin of the driver, the first resistor and the first diode are connected in parallel on the first relay, the driving interface is arranged on the first relay, the driving interface is connected with the lead screw motor, so that the lead screw motor can accurately move according to the instruction of the controller, and the ultrasonic detection assembly can be driven to move stably for detection.

[0101] In conclusion, the concealed underground fire pool detection device in the embodiment of the application is based on the ultrasonic feedback attenuation detection principle, and the real-time capacity, the real-time water level and the real-time pressure of the underground fire pool are accurately detected according to the change of the ultrasonic feedback attenuation rate parameter under the integrated control of the controller in combination with multiple types of electrical elements and algorithms, so that the user can accurately master the actual change of the fire pool, and then analyze and determine the leakage, pipeline corrosion, bottom sediment and other phenomena of the fire pool, so as to ensure the sufficient water supply and daily maintenance of the underground fire pool, and eliminate the safety hazards of the underground fire pool.

[0102] The above specific embodiments cannot be regarded as a limitation on the protection scope of the application, and any alternative improvement or change made by the person skilled in the art to the embodiments of the application falls within the protection scope of the application.

[0103] The details not described in the application are the known technology of the person skilled in the art.

Claims

1. A concealed underground fire water tank detection device, characterized in that, The detection device includes: A movable base includes a first base and a second base arranged in parallel. A caster wheel is provided at the lower part of the first base. A lead screw motor is located inside the first base. A lead screw, configured with the lead screw motor, is located between the first and second bases. An ultrasonic detection component is threaded onto the lead screw. The ultrasonic detection component is arranged horizontally and is used to transmit ultrasonic detection signals to the underground fire water tank and receive corresponding ultrasonic feedback attenuation rate parameters. The component detects relevant parameters of the underground fire water tank based on changes in the ultrasonic feedback attenuation rate. The ultrasonic detection component includes an ultrasonic transmitter and an ultrasonic receiver. The controller is located inside the second base and is electrically connected to the ultrasonic detection component via a command input device to receive ultrasonic feedback attenuation rate parameters. The controller is also connected to a lead screw motor via a driver to drive the ultrasonic detection component to move vertically along the lead screw. A photoelectric sensor is provided at one end of the first base near the underground fire water tank. The photoelectric sensor is used to detect the distance parameters between the ultrasonic detection component and the underground fire water tank and is electrically connected to the controller via an AD converter. The detection method of the detection device includes the following steps: S1, a set of detection devices is set at each end of the underground fire water tank, and the distance between the two sets of detection devices and the underground fire water tank is the same; the controller of one set of detection devices transmits a drive command to the lead screw motor, so that the ultrasonic detection component is aligned with the highest water level of the underground fire water tank; the controller of the other set of detection devices transmits a drive command to the lead screw motor, so that the ultrasonic detection component is aligned with the lowest water level of the underground fire water tank. S2, the photoelectric sensor detects the distance D between the detection device and the underground fire water tank. The controllers of the two sets of detection devices simultaneously transmit drive commands to the lead screw motor, causing the ultrasonic detection components of the two sets of detection devices to move in the directions of top to bottom and bottom to top, respectively. During the movement, the ultrasonic detection components emit ultrasonic detection signals, receive ultrasonic feedback attenuation rate parameters, and combine them with time nodes and changes in the height of the ultrasonic detection components to form evaluation marker points. S3, transmit the evaluation markers to the controller, and construct the evaluation matrix A by combining the distance D between the detection device and the underground fire water tank; S4, introduce positive parameters, calculate the evaluation matrix A through the operation function, and obtain the real-time ultrasonic feedback change waveform corresponding to the underground fire water tank; S5 analyzes and detects the standard ultrasonic feedback change waveform and the real-time corresponding ultrasonic feedback change waveform of the underground fire water tank to obtain the actual usage status of the underground fire water tank and eliminate safety hazards of the underground fire water tank.

2. The concealed underground fire water tank detection device according to claim 1, characterized in that, The photoelectric sensor detects the distance D between the detection device and the underground fire water tank. The controllers of both sets of detection devices simultaneously transmit drive commands to the lead screw motors, causing the ultrasonic detection components of the two sets of detection devices to move in the directions of top-down and bottom-up, respectively. During the movement, the ultrasonic detection components emit ultrasonic detection signals and receive ultrasonic feedback attenuation rate parameters, including the following steps: S2.1, Set multiple uniform time nodes, and adjust the displacement of the lead screw motor at each time node to change the height change of the ultrasonic detection component; S2.2, Perform ultrasonic wave transmission and reception at each time point to obtain the corresponding ultrasonic wave feedback attenuation rate parameters; S2.3, adjust the time interval of the time nodes and the distance between the detection device and the underground fire water tank, repeat the above steps S2.1 and S2.2 three times, construct a three-dimensional coordinate system of time nodes, ultrasonic feedback attenuation rate parameters and ultrasonic detection component height changes, and obtain 4 evaluation marker points in the three-dimensional coordinate system.

3. The concealed underground fire water tank detection device according to claim 2, characterized in that, Introducing positive parameters and calculating the evaluation matrix A using a computational function to obtain the real-time ultrasonic feedback waveform corresponding to the underground fire water tank includes the following steps: S4.1, Determine the threshold range of the positive parameter and construct the operation function as follows: Among them, D i H represents the distance between the detection device and the underground fire water tank during the i-th adjustment. i It is the average value of the height change of the ultrasonic detection component during the i-th adjustment, and T is the standard value of the time interval between time nodes; S4,2, combine the positive parameters with the values ​​calculated by the operation function to obtain the coordinate parameters of the ultrasonic feedback waveform corresponding to the four evaluation marker points, i.e.: X n →(positive parameter λ, F(X) i ), Y n →(positive parameter λ, F(Y) i )) The horizontal axis data is defined as the values ​​of the evaluation matrix, and the vertical axis data is defined as the rate of change of the ultrasonic feedback attenuation parameter. S4.3, determine 4 coordinate points in the coordinate system to draw the ultrasonic feedback change waveform.

4. The concealed underground fire water tank detection device according to claim 3, characterized in that, The process of analyzing and detecting the standard ultrasonic feedback waveform and its real-time corresponding ultrasonic feedback waveform of the underground fire water tank to obtain the actual usage status of the underground fire water tank and eliminate potential safety hazards includes the following steps: S5.1, define the change rate of the ultrasonic feedback attenuation rate parameter of the inner wall of the underground fire water tank as low-order data, define the change rate of the ultrasonic feedback attenuation rate parameter of the inner wall of the underground fire water tank and the fire water as high-order data, and draw the standard ultrasonic feedback change waveform. S5.2, Set an inflection point in the standard ultrasonic feedback waveform and obtain the coordinate data of the inflection point; S5.3, Substitute the inflection point coordinates into the actual ultrasonic feedback waveform. If the inflection point coordinates are below the real-time ultrasonic feedback waveform, it indicates that the water level in the underground fire water tank is too high, exceeding the maximum water level of the underground fire water tank; if the inflection point coordinates are above the real-time ultrasonic feedback waveform, it indicates that the water level in the underground fire water tank is too low, below the minimum water level of the underground fire water tank, and the fire water source is insufficient.

5. The concealed underground fire water tank detection device according to claim 1, characterized in that: The controller is an STM32F103C8T6 with 64 pins. The controller is connected to the instruction input device via pin 4, to the AD converter via pin 15, and to the driver via pin 38.

6. The concealed underground fire water tank detection device according to claim 5, characterized in that: The command input device is model TLP290 and has four pins. Pin 1 of the command input device is connected to the ultrasonic detection component. A ninth resistor, a tenth resistor, and a fourth capacitor are connected in parallel between pin 1 and pin 2 of the command input device. A fifth capacitor and an eighth resistor are connected in parallel between pin 3 and pin 4 of the command input device. Pin 3 of the command input device is connected to pin 4 of the controller.

7. The concealed underground fire water tank detection device according to claim 5, characterized in that: The AD converter is model AD8551 and has 8 pins. The AD converter is connected to pin 15 of the controller through pin 6 and to the photoelectric sensor through pin 3.

8. A concealed underground fire water tank detection device according to claim 5, characterized in that: The driver is model ULN2003 and has 16 pins. The driver is connected to pin 38 of the controller through pin 1. A first relay is connected to pin 16 of the driver. A first resistor and a first diode are connected in parallel on the first relay. The first relay has a drive interface, which is connected to the lead screw motor.

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