Roadbed monitoring equipment integrated with multiple sensors

Abstract

The utility model relates to roadbed monitoring equipment integrating multiple sensors, which comprises a power supply, a temperature and humidity sensor, a settlement detector and a data acquisition device, and the power supply input end of the data acquisition device is connected to the power supply and is respectively connected with the temperature and humidity sensor and the settlement detector. The data acquisition device comprises a power supply distribution circuit, a microprocessor, a Cat1 modem and an RS485 communication module, the input end of the power supply distribution circuit is connected to a power supply, the output end of the power supply distribution circuit is connected to the microprocessor, the Cat1 modem and the RS485 communication module, the microprocessor is connected with the Cat1 modem, the Cat1 modem is connected with the RS485 communication module, and the RS485 communication module is connected with the microprocessor. The RS485 communication module is respectively connected with the temperature and humidity sensor and the settlement detector. Compared with the prior art, the utility model has the advantages of good durability, abundant data and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of roadbed monitoring equipment, in particular to a kind of roadbed monitoring equipment integrated with multiple sensors. BACKGROUND

[0002] It has become the research focus in the field of road engineering technology to realize scientific and efficient large-scale maintenance of highway. In this context, in order to effectively prevent and reduce road damage and traffic safety hazards caused by unstable roadbed, it is particularly important to monitor the real-time temperature, humidity and settlement of roadbed soil and other key parameters.

[0003] The existing roadbed monitoring method mainly relies on fixed-point manual patrol or single-function sensing equipment. Manual patrol has long cycle and large workload, and cannot realize real-time monitoring and timely detection of potential problems of roadbed. The single-parameter monitoring equipment cannot comprehensively reflect the overall state of roadbed soil, and it is difficult to accurately assess the stability of roadbed.

[0004] In addition, the current sensor equipment is easily damaged in harsh environment, and it is difficult to maintain long-term stable operation. The wireless data transmission module of the equipment is easily disturbed by the environment, resulting in unstable data transmission, which restricts the efficiency and accuracy of roadbed monitoring. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of roadbed monitoring equipment integrated with multiple sensors, by setting data acquisition device to distribute power supply and wired connection to temperature and humidity sensor, settlement detector, to obtain more reliable data on the one hand, and to realize integrated power supply of multiple different specifications of sensors on the other hand, to reduce the volume.

[0006] The utility model can be realized by the following technical solutions:

[0007] A kind of roadbed monitoring equipment integrated with multiple sensors, including power supply, temperature and humidity sensor, settlement detector and data acquisition device, the power input end of data acquisition device is connected to power supply, and is connected with temperature and humidity sensor and settlement detector respectively, the data acquisition device includes power distribution circuit, microprocessor, Cat_1 modem and RS485 communication module, the input end of power distribution circuit is connected to power supply, and the output end is connected to microprocessor, Cat_1 modem and RS485 communication module respectively, the microprocessor is connected with Cat_1 modem, the Cat_1 modem is connected with RS485 communication module, and the RS485 communication module is connected with temperature and humidity sensor and settlement detector respectively.

[0008] The power distribution circuit comprises an anti-reverse unit, a first power module, a second power module, a first voltage reduction circuit and a second voltage reduction circuit, the first power module comprises a first normally closed output end, a first controlled output end and a first control input end, the second power module comprises a second normally closed output end, a second controlled output end and a second control input end;

[0009] The input end of the anti-reverse unit is connected to a power supply, and the output end is connected to the power input end of the first power module, the first normally closed output end of the first power module is connected to the input end of the first voltage reduction circuit, the first controlled output end is connected to the input end of the second voltage reduction circuit, and the first control input end is connected to an output pin of the microprocessor,

[0010] The output end of the first voltage reduction circuit is connected to the power input end of the second power module, the second normally closed output end of the power input end is connected to the power input end of the microprocessor, the second controlled output end is connected to the power input end of the Cat_1 modem and the RS485 communication module, and the second control input end is connected to an output pin of the microprocessor.

[0011] The power distribution circuit further comprises a voltage monitoring unit, and the voltage monitoring unit is connected to the microprocessor and the first controlled output end of the first power module respectively.

[0012] The anti-reverse unit comprises a first power connector, a seventeenth field effect transistor and a sixty-third resistor, the drain of the seventeenth field effect transistor is connected to the positive electrode of the first power connector, the source is connected to the power input end of the first power module as an output end, and the gate is grounded through the sixty-third resistor, the negative electrode of the first power connector is grounded, and the first power connector is connected to a power supply.

[0013] The first power module comprises a first field effect transistor, a first resistor, a second resistor and a second field effect transistor, the drain of the first field effect transistor is a first controlled output end, the source is connected to the power input end of the first power module and one end of the first resistor, and the gate is connected to the other end of the first resistor, one end of the second resistor and the source of the second field effect transistor, the drain of the second field effect transistor is grounded, the gate is a first control input end and is connected to the other end of the second resistor, and the first normally closed output end and the power input end of the first power module are short-circuited.

[0014] The second power module comprises a third field effect tube, a fourth field effect tube, a third resistor and a fourth resistor, the drain of the third field effect tube is used as a second controlled output end, the source is connected to the electric energy input end of the second power module and one end of the third resistor, the gate is connected to the other end of the third resistor, one end of the fourth resistor and the source of the fourth field effect tube, the drain of the fourth field effect tube is grounded, the gate is used as a second control input end and is connected to the other end of the fourth resistor, and the second normally closed output end is short-circuited with the electric energy input end of the second power module.

[0015] The voltage monitoring unit comprises a voltage dividing circuit, and a voltage dividing output end of the voltage dividing circuit is connected to the microprocessor.

[0016] The settlement detector comprises a fixing clamp, a fixing ring, a PVC shell and an inductance frequency modulation unit, the inductance frequency modulation unit is arranged in the PVC shell, the fixing clamp is arranged outside the PVC shell through the fixing ring and is fixed on a mounting base.

[0017] The temperature and humidity sensor is a probe type sensor.

[0018] The power supply is a lithium battery.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1、Through setting up data acquisition device carries out power distribution and wired connection to temperature and humidity sensor, settlement detector, can obtain more reliable data on one side, another side can realize the integration of power supply of various different specifications of sensor, reduce the volume.

[0021] 2、Can simultaneously acquire the information of multiple key parameters such as soil temperature, humidity and settlement, realizes the comprehensive real-time monitoring of roadbed state, improves the efficiency and accuracy of roadbed monitoring.

[0022] 3、Through the design of first power module and second power module, the controllable unexpected of different voltage grades can be output, and the continuous power supply of the microprocessor can be maintained.

[0023] 4、Through the design of fixing clamp, fixing ring and PVC shell, it can work stably in harsh environment for a long time, and the reliability is high. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the settlement detector;

[0026] Figure 3 It is a structural schematic diagram of the temperature and humidity sensor;

[0027] Figure 4 Circuit schematic diagram for power distribution circuit;

[0028] Figure 5 Circuit schematic diagram for microprocessor;

[0029] Figure 6 Circuit schematic diagram for Cat_1 modem;

[0030] Figure 7 Circuit schematic diagram for RS485 communication module;

[0031] Figure 8 Circuit schematic diagram for RS232 communication module;

[0032] Figure 9 Circuit schematic diagram for connection terminal part;

[0033] Wherein: 1, power supply, 2, sedimentation detector, 3, temperature and humidity sensor, 4, data acquisition device, 2-1, fixed clamp, 2-2, fixed ring, 2-3, PVC shell, 2-4, inductance frequency modulation unit, 3-1, probe, 3-2, protective shell, 3-3, sensor chip, 2-4-1, magnetic core, 2-4-2, spiral coil, 2-4-3, relative fixed point, 2-4-4, temperature sensor, 2-4-5, memory. DETAILED DESCRIPTION

[0034] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0035] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "proximal end", "distal end", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Physical quantities in the formula, such as no separate marking, should be understood as the basic quantity of the international system of units, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration and other mathematical operations.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] In the description of the utility model, it is also necessary to explain that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] Some embodiments of the utility model will be described in detail below in combination with the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0040] An integrated multi-sensor roadbed monitoring device, as shown in Figure 1 The power supply input end of the data acquisition device 4 is connected to the power supply 1 and connected with the temperature and humidity sensor 3 and the settlement detector 2 respectively, the data acquisition device 4 includes a power distribution circuit, a microprocessor, a Cat_1 modem and an RS485 communication module, the input end of the power distribution circuit is connected to the power supply 1, and the output end is connected to the microprocessor, the Cat_1 modem and the RS485 communication module respectively, the microprocessor is connected with the Cat_1 modem, the Cat_1 modem is connected with the RS485 communication module, and the RS485 communication module is connected with the temperature and humidity sensor 3 and the settlement detector 2 respectively.

[0041] The power supply is distributed by setting the data acquisition device 4 and is connected to the temperature and humidity sensor 3 and the settlement detector 2 through a wire, so that more reliable data can be obtained and the power supply of various sensors with different specifications can be integrated to reduce the volume.

[0042] The information of the soil temperature, humidity and settlement and other key parameters can be obtained simultaneously, the overall real-time monitoring of the roadbed state is realized, and the efficiency and accuracy of the roadbed monitoring are improved.

[0043] In the embodiment, as shown in Figure 1 The power supply distribution circuit includes an anti-reverse connection unit, a first power supply module, a second power supply module, a first voltage reduction circuit and a second voltage reduction circuit, the first power supply module includes a first normally closed output end, a first controlled output end and a first control input end, the second power supply module includes a second normally closed output end, a second controlled output end and a second control input end;

[0044] The input end of the anti-reverse connection unit is connected to the power supply 1, the output end is connected to the power input end of the first power supply module, the first normally closed output end of the first power supply module is connected to the input end of the first voltage reduction circuit, the first controlled output end is connected to the input end of the second voltage reduction circuit, and the first control input end is connected to an output pin of the microprocessor,

[0045] The output end of the first voltage reduction circuit is connected to the power input end of the second power supply module, the second normally closed output end of the power input end is connected to the power input end of the microprocessor, the second controlled output end is connected to the power input end of the Cat_1 modem and the RS485 communication module, and the second control input end is connected to an output pin of the microprocessor.

[0046] The power supply distribution circuit further includes a voltage monitoring unit, which is connected to the microprocessor and the first controlled output end of the first power supply module, respectively.

[0047] Specifically, the anti-reverse connection unit includes a first power connector CN1, a seventeenth field effect transistor Q17 and a sixty-third resistor R63, the drain of the seventeenth field effect transistor Q17 is connected to the positive electrode of the first power connector CN1, the source is connected to the power input end of the first power supply module as an output end, the gate is grounded through the sixty-third resistor R63, the negative electrode of the first power connector CN1 is grounded, and the first power connector CN1 is connected to the power supply 1.

[0048] The first power module comprises a first field effect transistor Q1, a first resistor R1, a second resistor R2 and a second field effect transistor Q2, the drain of the first field effect transistor Q1 is a first controlled output end, the source is connected to the power input end of the first power module and one end of the first resistor R1, the gate is connected to the other end of the first resistor R1, one end of the second resistor R2 and the source of the second field effect transistor Q2, the drain of the second field effect transistor Q2 is grounded, the gate is a first control input end and is connected to the other end of the second resistor R2, and the first normally closed output end is short-circuited with the power input end of the first power module.

[0049] The second power module comprises a third field effect transistor Q3, a fourth field effect transistor Q4, a third resistor R3 and a fourth resistor R4, the drain of the third field effect transistor Q3 is a second controlled output end, the source is connected to the power input end of the second power module and one end of the third resistor R3, the gate is connected to the other end of the third resistor R3, one end of the fourth resistor R4 and the source of the fourth field effect transistor Q4, the drain of the fourth field effect transistor Q4 is grounded, the gate is a second control input end and is connected to the other end of the fourth resistor R4, and the second normally closed output end is short-circuited with the power input end of the second power module.

[0050] Through the design of the first power module and the second power module, the controllable output of different voltage levels can be realized, and the continuous power supply of the microprocessor can be maintained.

[0051] The voltage monitoring unit comprises a voltage dividing circuit, and the voltage dividing output end of the voltage dividing circuit is connected to the microprocessor.

[0052] As shown in Figure 5 The circuit principle diagram of the microcontroller part is shown in the figure, U1.1 and U1.2 are combined together as the main control chip, U19 is a watchdog, and other Cat_1 modems, RS485 communication modules and RS232 communication modules are shown in Figure 6 、 Figure 7 and Figure 8 respectively, the interface part is shown in Figure 9 In the present application, the Cat_1 modem, the RS485 communication module and the RS232 communication module all adopt the existing design, and the improvement of the present application is mainly in the power distribution circuit, so that the parts can be integrated together to work.

[0053] In the present embodiment, the sedimentation detector 2 can adopt the existing inductive frequency modulation principle product, such as Figure 2As shown, it comprises a fixed clamp 2-1, a fixed ring 2-2, a PVC shell 2-3 and an inductance frequency modulation unit 2-4, the inductance frequency modulation unit 2-4 is placed in the PVC shell 2-3, the fixed clamp 2-1 is arranged outside the PVC shell 2-3 through the fixed ring 2-2 and is fixed on the installation base, and through the design of the fixed clamp 2-1, the fixed ring 2-2 and the PVC shell 2-3, it can be stably worked in a harsh environment for a long time and has high reliability. Similarly, the temperature and humidity sensor 3 is a probe type sensor, specifically comprising a probe 3-1, a protective shell 3-2 and a sensor chip, in the embodiment, the settlement detector 2 and the temperature and humidity sensor 3 both adopt existing mature technologies, so details are not described herein, and in addition, in the embodiment, the power supply 1 is a lithium battery, and of course other types of batteries can also be used in other embodiments.

[0054] In order to verify the application effect of the application in actual roadbed monitoring, the following real data obtained by the sensor buried in the roadbed of a test road section in a certain area 1 are used to show the actual application of the application in detail, and the specific data are shown in Table 1.

[0055] Table 1: Monitoring data of a certain area 1

[0056]

[0057]

[0058] In the corresponding example of Table 1, a lithium battery with a battery capacity of 2000 mA·h and a voltage of 12V is used, wherein the sensor is set to send temperature, relative humidity and settlement data information to the platform every 4 hours, and the signal is sent for 1 minute, and the remaining time is kept in sleep state, the current is 50 mA when the signal is sent, and the energy consumption is 36 J; the current is 40 μA when the sleep state is kept, and the energy consumption is 6.88 J, and the battery can ensure that the sensor continuously sends signals for about 335 days in an ideal state. In addition, the signal strength of the sensor is always kept at-51 dBm, which belongs to a strong signal with good quality and stability; the change values of various monitoring data are stable and reasonable. The specific data sending method belongs to the existing technology in the field, and therefore details are not described herein.

[0059] In addition, in order to verify the application effect of the application in actual roadbed monitoring, the following real data obtained by the sensor buried in the roadbed of a test road section in a certain area 2 are used to show the actual application of the application in detail, and the specific data are shown in Table 2.

[0060]

[0061]

[0062]

[0063] The examples of Table 2 are consistent with the examples of Table 1, the sensors are also arranged to send temperature, relative humidity and subsidence data information to the platform every 4 hours, the signal strength is always maintained at -51 dBm, which belongs to a good and stable strong signal; the change values of various monitoring data are stable and reasonable, and the specific data transmission belongs to the prior art in the field, and therefore will not be described again.

Claims

1. An integrated multi-sensor subgrade monitoring device, characterized by, The application relates to a data acquisition device for a power supply (1), a temperature and humidity sensor (3), a sedimentation detector (2) and a data acquisition device (4), wherein the power input end of the data acquisition device (4) is connected to the power supply (1) and is connected to the temperature and humidity sensor (3) and the sedimentation detector (2) respectively, the data acquisition device (4) comprises a power distribution circuit, a microprocessor, a Cat_1 modem and an RS485 communication module, the input end of the power distribution circuit is connected to the power supply (1), the output end is connected to the microprocessor, the Cat_1 modem and the RS485 communication module respectively, the microprocessor is connected to the Cat_1 modem, the Cat_1 modem is connected to the RS485 communication module, and the RS485 communication module is connected to the temperature and humidity sensor (3) and the sedimentation detector (2) respectively.

2. The integrated multi-sensor subgrade monitoring device of claim 1, wherein, The power distribution circuit comprises an anti-reverse connection unit, a first power module, a second power module, a first voltage reduction circuit and a second voltage reduction circuit, the first power module comprises a first normally closed output end, a first controlled output end and a first control input end, and the second power module comprises a second normally closed output end, a second controlled output end and a second control input end; the input end of the anti-reverse connection unit is connected to the power supply (1), the output end is connected to the power input end of the first power module, the first normally closed output end of the first power module is connected to the input end of the first voltage reduction circuit, the first controlled output end is connected to the input end of the second voltage reduction circuit, and the first control input end is connected to one output pin of the microprocessor, the output end of the first voltage reduction circuit is connected to the power input end of the second power module, the second normally closed output end of the power input end is connected to the power input end of the microprocessor, the second controlled output end is connected to the power input end of the Cat_1 modem and the RS485 communication module, and the second control input end is connected to one output pin of the microprocessor.

3. The integrated multi-sensor roadbed monitoring device of claim 2, wherein, The power distribution circuit further comprises a voltage monitoring unit which is connected to the microprocessor and the first controlled output end of the first power module respectively.

4. The integrated multi-sensor subgrade monitoring device of claim 2, wherein, The anti-reverse connection unit comprises a first power connector (CN1), a seventeenth field effect transistor (Q17) and a sixty-third resistor (R63), the drain of the seventeenth field effect transistor (Q17) is connected to the anode of the first power connector (CN1), the source is connected to the power input end of the first power module as an output end, the gate is grounded through the sixty-third resistor (R63), the cathode of the first power connector (CN1) is grounded, and the first power connector (CN1) is connected to the power supply (1).

5. The integrated multi-sensor roadbed monitoring device of claim 2, wherein, The first power module comprises a first field effect transistor (Q1), a first resistor (R1), a second resistor (R2) and a second field effect transistor (Q2), the drain of the first field effect transistor (Q1) is a first controlled output end, the source is connected to the power input end of the first power module and one end of the first resistor (R1), the gate is connected to the other end of the first resistor (R1), one end of the second resistor (R2) and the source of the second field effect transistor (Q2), the drain of the second field effect transistor (Q2) is grounded, the gate is a first control input end and is connected to the other end of the second resistor (R2), and the first normally closed output end is short-circuited with the power input end of the first power module.

6. The integrated multi-sensor roadbed monitoring device of claim 2, wherein, The second power module comprises a third field effect transistor (Q3), a fourth field effect transistor (Q4), a third resistor (R3) and a fourth resistor (R4), the drain of the third field effect transistor (Q3) is a second controlled output end, the source is connected to the power input end of the second power module and one end of the third resistor (R3), the gate is connected to the other end of the third resistor (R3), one end of the fourth resistor (R4) and the source of the fourth field effect transistor (Q4), the drain of the fourth field effect transistor (Q4) is grounded, the gate is a second control input end and is connected to the other end of the fourth resistor (R4), and the second normally closed output end is short-circuited with the power input end of the second power module.

7. The integrated multi-sensor roadbed monitoring device of claim 3, wherein, The voltage monitoring unit comprises a voltage dividing circuit, and the voltage dividing output end of the voltage dividing circuit is connected to the microprocessor.

8. The integrated multi-sensor roadbed monitoring device of claim 1, wherein, The sedimentation detector (2) comprises a fixing clamp (2-1), a fixing ring (2-2), a PVC shell (2-3) and an inductance frequency modulation unit (2-4), the inductance frequency modulation unit (2-4) is arranged in the PVC shell (2-3), the fixing clamp (2-1) is arranged outside the PVC shell (2-3) through the fixing ring (2-2) and is fixed on a mounting base.

9. The integrated multi-sensor roadbed monitoring device of claim 1, wherein, The temperature and humidity sensor (3) is a probe type sensor.

10. The integrated multi-sensor roadbed monitoring device of claim 1, wherein, The power supply (1) is a lithium battery.

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