Device and method for continuously moving and remotely detecting road surface bumps and settlements

Abstract

The present invention discloses a device and method for continuously traveling remotely detecting road surface uplift and subsidence. The detection device automatically travels on the road surface to be detected, controls the mobile vehicle to stop after traveling a fixed distance each time, and automatically reads the current and voltage values ​​of the corresponding detection circuit detected by the multimeter during parking, which are used to calculate the angle of the metal needle passing through the resistance ring, and draws the settlement curve of the measured road surface through the angle change data, so as to know the settlement and uplift caused by the construction. The method of the present invention realizes remote detection of ground settlement and uplift conditions, and the collected data is stored in an SD card. The operator only needs to import the data in the SD card into the computer to draw the curve, without the need for professional training; the measurement data is accurate, the slope angle can be measured at fixed intervals, and the fixed distance can be controlled automatically.

Description

Technical Field

[0001] The present invention relates to a device and method for continuously moving and remotely detecting road surface heaves and settlements, belonging to the technical field of intelligent instruments and meters. Technical Background

[0002] During road engineering and tunnel shield construction, it is inevitable to cause surface heaves and settlements. When the ground settlement reaches a certain level, it will inevitably affect the normal use of the surrounding surface and surrounding buildings. Therefore, effective systematic detection before and after road construction is the key to ensuring the smooth progress of the project.

[0003] Currently, for on-site construction safety detection, most still use traditional manual detection means such as total stations, levels, and theodolites. Although the detection accuracy of this detection means meets the construction requirements, it is affected by the construction environment and the manual workload is large, and it is also impossible to implement remote monitoring. Fiber optic sensing technology has also been applied in surface detection. For example, in the patent with the application number 201921799256.8 and the invention name of a quasi-distributed surface settlement detection device based on fiber optic sensing technology, large-scale settlement measurement can be achieved through distributed settlement detection stations, and the purpose of remote automatic detection can be realized. However, when the sensor is placed on the surface and the influence range of road construction is large, it is difficult to avoid being disturbed by construction and it is difficult to achieve large-area detection of surface deformation.

[0004] Therefore, it is necessary to develop a device that can continuously move and remotely detect surface heaves and settlements before and after road construction, which can remotely detect the surface settlement of on-site construction. Summary of the Invention

[0005] The purpose of the present invention is to propose a device and method for continuously moving and remotely detecting road surface heaves and settlements, and this device can remotely detect the road surface heaves and settlements caused by road construction.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A device for continuously moving and remotely detecting road surface heaves and settlements includes a mobile trolley, on which a detection device is carried. The mobile trolley travels in a straight line on the road surface to be detected. The mobile trolley is controlled to stop after traveling a fixed distance each time. During the stop period, the detection results are automatically detected and read, and the inclination angles of the detection device in the forward direction and the left and right directions of the mobile trolley when passing through the heave and settlement road surfaces are calculated in real time. The inclination angle in the left and right directions is used to judge the inclination situation in the cross-sectional direction, and the inclination angle in the forward direction is used to draw the road surface curve.

[0008] Specifically, the detection device includes at least two resistance rings in a semi-circular ring structure, namely a first resistance ring and a second resistance ring. Both resistance rings are fixedly connected to the vehicle body of the mobile trolley through brackets, and their openings are all arranged upward. Each resistance ring has two semi-circular end faces as working ends. The two working ends of the first resistance ring point to both sides of the vehicle body, and the two working ends of the second resistance ring point to the front and rear ends of the vehicle body. Above the opening of each resistance ring, a metal needle is rotatably installed. The two metal needles are respectively a first metal needle and a second metal needle. The rotation shafts of the two metal needles pass through the centers of the corresponding resistance rings. The tip of each metal needle contacts and conducts electricity with one working end of the corresponding resistance ring, and the rotation shafts of the two metal needles are perpendicular to each other.

[0009] When the mobile trolley is traveling on a road surface without bumps and settlements, both metal needles point to the lowest point of the arc of the working end of the corresponding resistance ring. As the mobile trolley travels on a bumpy or sunken road surface, the two metal needles will rotate relative to the working ends of their respective resistance rings to form an angle. The first resistance ring and the first metal needle detect the inclination angle in the forward direction of the mobile trolley, and the second resistance ring and the second metal needle detect the inclination angle in the left-right direction.

[0010] When the mobile trolley travels to a bumpy or sunken road surface, the mobile trolley will tilt in both the front-rear direction and the left-right direction. The tilt in the front-rear direction will cause the first metal needle to rotate along the working end of the first resistance ring, but will not cause the second metal needle to separate from the working end of the second resistance ring. At the same time, due to the tilt in the left-right direction, the second metal needle will rotate along the working end of the second resistance ring, but will not cause the first metal needle to separate from the working end of the first resistance ring. That is, the metal needle always remains in contact with the corresponding working end, rotates relatively and conducts electricity. Moreover, the working end of the resistance ring and the surface of the metal needle are both very smooth, and the friction force during their contact and sliding is very small and can be ignored. The dynamic friction between the metal needle and its installation rotation shaft also needs to be very small, which does not affect the free rotation of the metal needle and will not affect the measurement accuracy.

[0011] Working principle: The mobile trolley equipped with the detection device automatically travels on the road surface to be measured. When the mobile trolley travels to a bumpy or sunken road surface, it will go uphill and downhill. Since the metal needle of the detection device always points vertically downward in the direction of gravity, it will rotate around the working end of the resistance ring, thereby changing the resistance value of the resistance ring connected to the circuit. Through the control of the sensor and the single-chip microcomputer, the mobile trolley moves the same fixed distance each time and then stops. When it stops, the current and voltage values in the circuit are detected by a multimeter, and the angle between the metal needle and the resistance ring is calculated from the corresponding resistance value, which is the angle of settlement or uplift at the current road surface position. By calculating the angle change value in each fixed moving distance through an algorithm, the settlement or uplift situation of the road is judged according to the change of the angle, and the road surface curve of the measured section is drawn.

[0012] Further, the detection device further includes two multimeters, a power supply, and a C51 single-chip microcomputer. The two multimeters are the first multimeter and the second multimeter respectively. The circuit structure of the detection device is as follows: The first metal needle is connected in series with the first resistance ring, and the second metal needle is connected in series with the second resistance ring. The series circuit of the first metal needle and the series circuit of the second metal needle are connected in parallel and then connected in series with the power supply and the C51 single-chip microcomputer to form the detection circuit of the detection device. The first multimeter is used to measure the current and voltage values of the series circuit of the first metal needle, and the second multimeter is used to measure the current and voltage values of the series circuit of the second metal needle; The detection circuit is connected in parallel with the switch and the motor of the mobile trolley. When the power supply is turned on, the detection device starts to work. When the switch is turned on, the motor drives the mobile trolley to travel.

[0013] The relative rotation of the metal needle within the resistance ring will change the resistance of the resistance ring connected to the circuit. By measuring the changes in current and voltage with a multimeter, the resistance value of the resistance ring connected to the circuit is calculated based on the current and voltage values, and further the angle change value of the metal needle within the resistance ring is obtained, which is used to judge the ground heave and settlement states.

[0014] Further, in order to improve the measurement accuracy, a protrusion is provided inside the tire of the mobile trolley, and a pressure sensor is installed at the corresponding position of the vehicle body and the protrusion. Every time the wheel rotates one circle, the protrusion presses the pressure sensor once. The pressure sensor transmits the data to the C51 single-chip microcomputer. The single-chip microcomputer controls to disconnect the switch to stop the motor from working. After the mobile trolley stops for several seconds, the switch is turned on again and the motor is started. After the wheel of the mobile trolley rotates one circle again, it stops. This cycle is repeated so that the mobile trolley travels the same fixed distance each time, and the detection device is used to detect the heave and settlement of the road surface in each fixed distance section; Since the distance traveled by the wheel of the mobile trolley in one rotation is very short, by traveling in this cycle on the measured road surface, the mobile trolley can stop at multiple settlement or heave points on the measured road surface when it stops. The premise of this solution is that the mobile trolley will not slide when it stops on an uphill or downhill road surface.

[0015] A measurement method for a device for continuously traveling and remotely detecting road surface heave and settlement. The single-chip microcomputer converts the current and voltage values of the first multimeter and the second multimeter through an algorithm to obtain the inclination angle in the forward direction and the inclination angle in the left and right directions under each fixed distance traveled by the mobile trolley. The algorithm is as follows:

[0016] Both resistance rings are standard 1 / 2 rings, and the total resistance of each is R 总 , and the maximum measurement angle is 90°. Then, when measuring the current and voltage values in the circuit for the nth time, the current A measured by the first multimeter n and the voltage U n are obtained. At this time, the resistance R of the series circuit of the first metal needle and the first resistance ring is obtained n as:

[0017]

[0018] The ratio α of the resistance of the first resistance ring to the total resistance n is as follows:

[0019]

[0020] When α n = 0, it indicates that the moving trolley is in the vertically upward position; when α n = 0.5, it indicates that the moving trolley is horizontally on a road surface without bumps or settlements; when α n = 1, it indicates that the moving trolley is in the vertically downward position;

[0021] The angle between the first metal needle and the position where the resistance value of the first resistance ring is 0 during the nth measurement is obtained through resistance ratio conversion is as follows:

[0022]

[0023] The current A measured by the second multimeter m and the voltage U m are used to obtain the resistance R in the series circuit of the second metal needle and the second resistance ring at this time m is as follows:

[0024]

[0025] In the nth measurement circuit, the ratio α of the resistance of the second resistance ring to the total resistance m is as follows:

[0026]

[0027] When α m = 0, it indicates that the moving trolley is in the state of tipping to the left; when α n = 0.5, it indicates that the moving trolley is horizontally on a road surface without bumps or settlements; when α m = 1, it indicates that the moving trolley is in the state of tipping to the right; the angle between the second metal needle and the position where the resistance value of the second resistance ring is 0 during the nth measurement is obtained through resistance ratio conversion is as follows:

[0028]

[0029] When ,

[0030] When ,

[0031] When When it is [a certain value], it indicates that the road surface is in a raised state at this time. When it is [a certain value], it indicates that there is a situation of tilting to the right side in the forward direction. When it is [a certain value], it is tilting to the left; is the inclination angle of the detection device in the forward direction of the mobile trolley obtained by conversion of the nth measurement; is the inclination angle of the detection device in the left - right direction of the mobile trolley obtained by conversion of the nth measurement;

[0032] When it is [a certain value], it indicates that the road surface is in a settlement state at this time. When it is [a certain value], there is a situation of tilting to the right side in the forward direction. When it is [a certain value], it is tilting to the left. The acquisition of left - right tilt is mainly to determine the undulation of the cross - section during the movement of the trolley.

[0033] Preferably, a protrusion is provided inside one of the tires of the mobile trolley, and a pressure sensor is installed at the corresponding position of the vehicle body. The voltage value when the protrusion presses the pressure sensor is measured in advance. Taking ±10% of this voltage value as the range, it is considered that the wheel rotates one circle. The number of times the voltage of the pressure sensor changes is counted. The voltage when the pressure sensor has no pressure value is defined as 1. When the pressure sensor is pressed by the protrusion and the voltage value changes, the count is incremented by 1:

[0034] When the count reaches 1, that is, the wheel rotates one circle. Whenever the wheel rotates one circle, the protrusion presses the pressure sensor once, and the pressure sensor transmits the data to the single - chip microcomputer. The single - chip microcomputer controls to disconnect the switch, making the mobile trolley stop for several seconds. After the delay function waits for several seconds, the switch is automatically turned on, and the motor is started again. The count value of the pressure sensor is reset, and the mobile trolley wheel rotates one circle again and then stops. In this way, the mobile trolley travels the same fixed distance each time, and the raised and settled conditions of the road surface in each fixed - distance section are detected in this cycle.

[0035] The present invention has the following technical effects:

[0036] The detection device of the present invention automatically travels on the road surface to be measured. When the mobile trolley travels to a raised or settled road surface, the metal needle of the detection device scratches the corresponding resistance ring, and the multimeter detects the current and voltage values of the corresponding detection circuit, which are used to calculate the angle at which the metal needle scratches the resistance ring at this time. The trolley stops for several seconds every fixed distance, measures the tilt angle at the current position through an algorithm, and draws the settlement curve of the measured road surface through the change data of the angle, so as to know the settlement and raising conditions caused by the construction.

[0037] The detection device described in the present invention has a simple structural design, is easy to operate, and the cost of each component is cheap. It can be disassembled and assembled on site by itself.

[0038] The measurement method of the present invention realizes remote detection of ground settlement and uplift conditions. The collected data is stored in the SD card. Operators only need to import the data in the SD card into the computer for curve drawing, without the need for professional training; the measurement data is relatively accurate, and the slope angle can be measured at fixed intervals, and the fixed distance can be controlled by oneself. Description of the Drawings

[0039] Figure 1 It is a schematic diagram of the overall structure of the detection device;

[0040] Figure 2 It is a schematic diagram of the internal circuit of the detection device;

[0041] Figure 3 It is the measurement principle Figure 1 ;

[0042] Figure 4 It is the measurement principle Figure 2 ;

[0043] Figure 5 It is a schematic diagram of the principle of drawing the settlement curve;

[0044] In the figure: 1. The first metal needle; 2. The first resistance ring; 3. The switch; 4. The motor; 5. The pressure sensor; 6. The protrusion; 7. The power supply; 8. The second metal needle; 9. The second resistance ring; 10. The SD card; 11. The card reader; 12. The C51 single-chip microcomputer; 13. The first multimeter; 14. The second multimeter; 15. The measurement wire. Detailed Implementation Manner

[0045] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0046] As Figure 1 shown, the device described in the present application includes a mobile trolley driven by a motor. A detection device is arranged on the mobile trolley. The detection device includes two semi-circular resistance rings, namely the first resistance ring 2 and the second resistance ring 9. Both resistance rings are fixedly connected to the vehicle body of the mobile trolley through brackets, and the openings of both resistance rings are arranged upward. Each resistance ring has two semi-circular end faces as working ends; the first resistance ring and the second resistance ring have the same structure but different setting directions. The two working ends of the first resistance ring 2 point to both sides of the vehicle body, and the two working ends of the second resistance ring 9 point to the front and rear ends of the vehicle body; above the opening of each resistance ring, a metal needle is rotatably installed. The two metal needles are respectively the first metal needle 1 and the second metal needle 8. The rotation shafts of the two metal needles pass through the centers of the corresponding resistance rings. The tip of each metal needle is in contact with and conducts electricity with a working end of the corresponding resistance ring, and the rotation shafts of the two metal needles are perpendicular to each other.

[0047] As Figure 2As shown in the figure, the first metal needle 1 and the first resistance ring 2 are connected in series through the measuring wire 15, and the second metal needle 8 and the second resistance ring 9 are connected in series through the measuring wire 15. The series circuit of the first metal needle and the series circuit of the second metal needle are connected in parallel and then connected in series with the power supply 7 and the C51 single-chip microcomputer 12 to form the detection circuit of the detection device. The first multimeter 13 is used to measure the current and voltage values of the series circuit of the first metal needle, and the second multimeter 14 is used to measure the current and voltage values of the series circuit of the second metal needle. The detection circuit is connected in parallel with the switch 3 and the motor 4. The power supply supplies power to the detection circuit. After the single-chip microcomputer controls the switch to be turned on, the power supply supplies power to the motor to make the mobile trolley move forward in front of the road to be measured.

[0048] Due to the influence of resistance during the movement of the mobile trolley, the trolley will generate acceleration, and the acceleration will cause the metal needle to swing, resulting in measurement errors. To reduce the error, the trolley stops every time it travels a fixed distance. During the parking period, the single-chip microcomputer automatically reads the current and voltage values of the two voltmeters. The method of making the trolley stop every time it travels a fixed distance is as follows: a protrusion 6 is arranged inside the tire of the mobile trolley, and a pressure sensor 5 is installed at the corresponding position of the vehicle body. Whenever the wheel rotates one circle, the protrusion squeezes the pressure sensor once, and the pressure sensor transmits the data to the C51 single-chip microcomputer 12. When the vehicle travels a fixed distance l, the single-chip microcomputer controls the switch to be turned off, making the mobile trolley stop for a few seconds, and then turns on the switch again, making the wheels of the mobile trolley rotate one circle and then stop. This cycle is repeated, making the mobile trolley travel the same fixed distance each time. During each parking period, the single-chip microcomputer automatically reads the current and voltage values of the multimeter, and the uplift and settlement conditions of the road surface in each fixed distance section during driving can be detected.

[0049] The voltage value when the protrusion squeezes the pressure sensor is measured in advance, and the range of ±10% of this voltage value is defined as one rotation of the wheel. The number of voltage changes of the pressure sensor is counted. The voltage when the pressure sensor has no pressure value is defined as 1. When the pressure sensor is squeezed by the protrusion and the voltage value changes, the count is incremented by 1; when the count reaches 1, that is, when the wheel rotates one circle, the pressure sensor transmits the data to the single-chip microcomputer, and the single-chip microcomputer controls the switch to be turned off, making the mobile trolley stop. The single-chip microcomputer automatically reads and records the current and voltage values of the multimeter, and the measured current A n 、A m and the voltage U n 、U m . After the delay function waits for 3 seconds, the switch is automatically turned on and the power supply is connected, the count value of the pressure sensor is reset, the motor is started again, and the wheels of the mobile trolley rotate one circle and then stop. This cycle is repeated.

[0050] Such as Figure 1As shown, when there is no uplift or settlement on the road surface where the trolley travels, the tips of the first metal pin and the second metal pin both point to the lowest point of the arc of the resistance ring under the action of gravity. At this time, record the current displayed by the second multimeter, and the current displayed by the second multimeter is the initial value.

[0051] As Figure 3 , 4 shown, when the moving trolley travels on a road surface without uplift or settlement, both metal pins point to the lowest point of the arc of the corresponding working end of the resistance ring, that is, the illustration is 0; if there is an uplift or settlement on the road surface, during the process of the moving trolley moving forward, there will be uphill and downhill, and at the same time, left and right tilts will occur.

[0052] The premise of this solution is that the moving trolley will not slide when traveling or parking on an uphill or downhill road surface. When parking, if the moving trolley goes uphill or downhill, the first metal pin always points in the vertical direction of gravity and at the same time sweeps across the first resistance ring at an angle That is is the rotation angle of the first metal pin relative to the first resistance ring when the moving trolley travels to a sunken or uplifted road surface. The power supply provides voltage, generates current in the circuit, and the current A is measured by the first multimeter n1 and the voltage U n1 . While the trolley travels in a straight line, there will be left and right tilts. The second metal pin always points in the vertical direction of gravity and rotates relative to the working end of the second resistance ring at an angle The second metal pin 8 sweeps across the second resistance ring 9 and the current A is measured by the second multimeter 14 m1 and the voltage U m1 . The C51 single-chip microcomputer 12 records the current and voltage values measured by the multimeter in real time, and through an algorithm conversion, obtains the corresponding forward direction inclination angle and the left and right direction inclination angles The left and right inclination angles are used to judge the inclination of the cross-section direction, and the forward direction inclination angle is used to draw the road surface curve.

[0053] The conversion method is as follows:

[0054] Both resistance rings are standard 1 / 2 rings, and the total resistance is R 总 , and the maximum measurement angle is 90°. Then, at the nth measurement, the current A measured by the first multimeter n and the voltage U n are used to obtain the resistance R in the series circuit of the first metal pin and the first resistance ring at this time n as:

[0055]

[0056] The ratio α of the resistance of the first resistance ring to the total resistancen is:

[0057]

[0058] When α n = 0, it indicates that the mobile trolley is in the vertically upward position; when α n = 0.5, it indicates that the mobile trolley is horizontally on a road surface without bumps or settlements; when α n = 1, it indicates that the mobile trolley is in the vertically downward position;

[0059] The included angle between the first metal needle and the position where the resistance value of the first resistance ring is 0 during the nth measurement is obtained through resistance ratio conversion is:

[0060]

[0061] The current A measured by the second multimeter m and the voltage U m , and the resistance R in the series circuit of the second metal needle and the second resistance ring at this time is obtained m is:

[0062]

[0063] During the nth measurement, the ratio α of the resistance of the second resistance ring to the total resistance m is:

[0064]

[0065] When α m = 0, it indicates that the mobile trolley is in the state of tipping to the left; when α n = 0.5, it indicates that the mobile trolley is horizontally on a road surface without bumps or settlements; when α m = 1, it indicates that the mobile trolley is in the state of tipping to the right;

[0066] The included angle between the second metal needle and the position where the resistance value of the second resistance ring is 0 during the nth measurement is obtained through resistance ratio conversion is:

[0067]

[0068] When , it indicates that the road surface is in a bumpy state at this time. When there is a situation of tilting to the right in the forward direction, and when it is tilting to the left; is the inclination angle of the detection device in the forward direction of the mobile trolley obtained by conversion during the nth measurement; The inclination angle of the detection device in the left-right direction of the mobile trolley obtained by conversion for the nth measurement;

[0069] When When, it indicates that the road surface is in a settlement state at this time. When there is a situation of inclination to the right side in the forward direction when, and when it is inclined to the left side.

[0070] Subsequently, the converted inclination angle is transmitted to the card reader 11. The card reader 11 stores the data in the SD card 10, and finally the SD card 10 transfers the data to the computer.

[0071] The measured by the settlement detection device described in this application, combined with the driving distance of the device, draws the settlement curve of the measured road surface. As shown in the schematic diagram of the principle of drawing the settlement curve, since each time the wheel described in this application rotates one circle, the protrusion on the vehicle will squeeze and touch the pressure sensor and transmit the data to the C51 single-chip microcomputer, and at the same time brake the mobile trolley, so the distance of each measurement section is l, and each measurement section corresponds to an inclination angle Figure 5 At the same interval of distance, the surface displacement change is Δh. At the same interval of distance, the surface displacement change is Δh.

[0072]

[0073] Among them, the inclination angle of the uphill is obtained from the angle passing by the left side of the first resistance ring; the inclination angle of the downhill is obtained from the angle passing by the right side of the first resistance ring.

[0074] The C51 single-chip microcomputer described in this application obtains the measured inclination angle and the surface displacement change of Δh through the following C language:

[0075] Define the integer Num as the number of loops, the floating-point number R as the current circuit resistance value, the floating-point number Ans as the inclination angle value at the place where the trolley travels, and the floating-point number Height as the height value of settlement or uplift for a fixed driving distance. Establish a for loop with the condition that Num is incremented by 1 for each completed loop:

[0076] 1. Assign the value obtained by dividing the read voltage by the read current to R; 2. Multiply the ratio of R to the preset Rmax by and assign it to Ans; 3. Judge whether the current value of Ans is greater than If it is greater, then Ans is assigned the value of If it is less, then Ans is assigned the value of 4. Multiply sin(Ans) by the predicted single-trip distance of the trolley to obtain the height; 5. Store the angle value Ans and the height value Height in the array and end the loop.

[0077] Finally, the data measured in this application can be integrated by a computer program with the angles measured for traveling the same distance, and a surface settlement detection curve can be automatically plotted with the elevation as the vertical coordinate and the traveling distance as the horizontal coordinate.

Claims

1. A device for continuously moving and remotely detecting road surface bumps and settlements, characterized in that, It includes a mobile trolley on which a detection device is mounted. The mobile trolley travels in a straight line on the road surface to be detected. The mobile trolley is controlled to stop after traveling a fixed distance each time. During the stop period, the detection device automatically detects and reads the detection results, and calculates in real time the inclination angles of the detection device in the forward direction and the left - right direction when the mobile trolley passes over the raised and sunken road surfaces. The inclination angle in the left - right direction is used to judge the inclination of the road surface in the cross - section direction, and the inclination angle in the forward direction is used to draw the road curve; The detection device includes at least two semicircular - ring - shaped resistance rings, namely a first resistance ring and a second resistance ring. Both resistance rings are fixedly connected to the body of the mobile trolley through brackets, and their openings are all upward. Each resistance ring has two semicircular end faces as working ends; The two working ends of the first resistance ring point to both sides of the vehicle body, and the two working ends of the second resistance ring point to the front and rear ends of the vehicle body. Above the opening of each resistance ring, a metal needle is rotatably installed. The two metal needles are the first metal needle and the second metal needle respectively. The rotating shafts of the two metal needles pass through the centers of the corresponding resistance rings. The tip of each metal needle is in contact with and conducts electricity with one working end of the corresponding resistance ring, and the rotating shafts of the two metal needles are perpendicular to each other. When the mobile trolley travels on a road surface without bumps or depressions, both metal needles point to the lowest points of the arcs of the working ends of the corresponding resistance rings. As the mobile trolley travels on a raised or sunken road surface, the two metal needles will rotate relative to the working ends of their respective resistance rings to form an angle. The first resistance ring and the first metal needle detect the inclination angle in the forward direction of the mobile trolley, and the second resistance ring and the second metal needle detect the inclination angle in the left - right direction. The detection device also includes two multimeters, a power supply, and a C51 single - chip microcomputer. The two multimeters are the first multimeter and the second multimeter respectively. The circuit structure of the detection device is as follows: The first metal needle is in series with the first resistance ring, and the second metal needle is in series with the second resistance ring. The series circuit of the first metal needle and the series circuit of the second metal needle are in parallel and then in series with the power supply and the C51 single - chip microcomputer to form the detection circuit of the detection device. The first multimeter is used to measure the current and voltage values of the series circuit of the first metal needle, and the second multimeter is used to measure the current and voltage values of the series circuit of the second metal needle; The detection circuit is in parallel with the switch and the motor of the mobile trolley. When the power supply is turned on, the detection device starts to work. When the switch is turned on, the motor drives the mobile trolley to travel.

2. The device for continuously traveling and remotely detecting road surface bumps and settlements according to claim 1, wherein A protrusion is provided inside the tire of the mobile trolley, and a pressure sensor is installed at the corresponding position of the vehicle body. Every time the wheel rotates one circle, the protrusion squeezes the pressure sensor once. The pressure sensor transmits the data to the single - chip microcomputer. The single - chip microcomputer controls the switch to be disconnected, so that the mobile trolley stops for several seconds and then the switch is turned on again, so that the wheels of the mobile trolley rotate one circle again and then stop. In this way, the mobile trolley travels the same fixed distance each time, and the detection device detects the bumps and depressions of the road surface in each fixed - distance section.

3. A measurement method for the device described in claim 1 for continuously traveling and remotely detecting road surface heaves and settlements, characterized in that, During the stop period of the mobile trolley, the single - chip microcomputer reads the current and voltage values of the two multimeters respectively, and calculates the inclination angles in the forward direction and the left - right direction under each fixed distance traveled by the mobile trolley through an algorithm. The algorithm is as follows: Both resistance rings are standard half-rings with a total resistance of R each 总 , and the maximum measurement angle is 90°. Then, for the n nth measurement, the current A n measured by the first multimeter U n , and the voltage R n are used to obtain the resistance in the series circuit of the first metal pin and the first resistance ring at this time, which is: ； The ratio of the resistance of the first resistance ring to the total resistance is as follows: ； When it indicates that the mobile trolley is in the vertically upward position; when it indicates that the mobile trolley is in a horizontal position on a road surface without bumps or settlements; when it indicates that the mobile trolley is in the vertically downward position; The angle between the first metal needle and the position where the resistance value of the first resistance ring is 0 during the n th measurement obtained by converting the resistance ratio is: ​ ； The current measured by the second multimeter A m and the voltage U m , from which the resistance in the series circuit of the second metal pin and the second resistance ring at this time is obtained R m is: ； At the n time of the second measurement, the ratio of the resistance value of the second resistance ring to the total resistance is: ； When it indicates that the mobile trolley is in a state of tipping to the left; when it indicates that the mobile trolley is on a road surface that is horizontal without bumps or settlements; when it indicates that the mobile trolley is in a state of tipping to the right; The angle at which the resistance value between the second metal pin and the second resistance ring is 0 during the n th measurement is obtained by converting the resistance ratio is: ​ ； When then , it indicates that the road surface is in a raised state at this time. When , there is a situation of tilting to the right side in the forward direction. When , it is tilting to the left side; is the inclination angle of the detection device in the forward direction of the moving trolley obtained by conversion of the nth measurement; is the inclination angle of the detection device in the left - right direction of the moving trolley obtained by conversion of the nth measurement; When then then it indicates that the road surface is in a settlement state. When then there is a situation of tilting to the right in the forward direction. When then it is tilting to the left.

4. The measuring method of the device for continuously traveling and remotely detecting road surface heaves and settlements according to claim 3, characterized in that A protrusion is provided inside one of the tires of the mobile trolley, and a pressure sensor is installed at the position of the vehicle body corresponding to the protrusion. The voltage value when the protrusion presses the pressure sensor is measured in advance, and a range of ±10% of this voltage value is defined as one rotation of the wheel. The number of voltage changes of the pressure sensor is counted, and the voltage when the pressure sensor has no pressure value is defined as 1. When the pressure sensor is pressed by the protrusion and the voltage value changes, the count is incremented by 1; When the count reaches 1, that is, when the wheel rotates one circle, every time the wheel rotates one circle, the protrusion presses the pressure sensor once, and the pressure sensor transmits the data to the single-chip microcomputer. The single-chip microcomputer controls the disconnection of the switch to make the mobile trolley stop for several seconds. After the delay function waits for several seconds, the switch is automatically turned on again, and the motor is started again. The count value of the pressure sensor is reset, so that the wheels of the mobile trolley rotate one circle again and then stop. This cycle is repeated to make the mobile trolley travel the same fixed distance each time, and the bumps and settlements of the road surface in each fixed distance section are detected in this cycle.

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