Device for monitoring function operation state of vehicle-mounted weighing system in real time

Abstract

The utility model provides a device for monitoring the function operation state of a vehicle-mounted weighing system in real time. The device comprises an MCU chip, a voltage division circuit, an ADC module, a networking module, a switch detection sensor and a communication module. The voltage division circuit is used for dividing the voltage of the vehicle battery to obtain a voltage division value; the ADC module is connected with the vehicle-mounted weighing sensor, and the ADC module converts analog quantity acquired by the vehicle-mounted weighing sensor into digital quantity; the networking module is connected with the 4G module and is used for determining whether the 4G module is disconnected; the switch detection sensor is connected with a driving motor for driving the tarpaulin to be closed or opened and is used for detecting a switch signal of the driving motor; the voltage division circuit, the ADC module, the networking module, the switch detection sensor and the GPS module are all connected with the MCU chip; and the communication module is connected with the MCU chip and is used for transmitting the alarm information outwards.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted weighing, in particular to a device for real-time monitoring of the functional operating state of a vehicle-mounted weighing system. Background Art

[0002] The stability of vehicle-mounted functional equipment is one of the important guarantees for the stability of the vehicle-mounted system. For a long time, various vehicle-mounted weighing solutions have focused more on the measurement accuracy of the vehicle-mounted system itself or the reliability of the measurement method, while ignoring the deviation and uncertainty brought to the system device by the stability of the vehicle-mounted equipment itself. For example, undervoltage of the power supply, poor contact of the status switch, disconnection of the equipment, intermittent offline of GPS, etc. will all lead to the loss of the function of the vehicle-mounted system equipment and the loss or inaccuracy of related logistics data. In addition, there is a lack of early warning mechanism for abnormal system functions. When the data is not ideal, the equipment is often faulty or even damaged and cannot be repaired.

[0003] At present, many vehicle-mounted equipment functional abnormalities are more dependent on manual inspections and handheld devices (such as multimeters, etc.), which check the problems one by one, which is time-consuming, labor-intensive, and costly, and it is difficult to accurately locate the problem and solve the problem quickly. In addition, manual inspections and handheld devices lack remote automatic monitoring and early warning mechanisms, and need to rely excessively on the experience of engineering and technical personnel and inspectors and handheld instruments and equipment (such as external meters, oscilloscopes, etc.) to discover and diagnose problems, which is time-consuming, labor-intensive, and costly; and the monitoring results are lagging, and when the functional data is not ideal, the equipment is often faulty or even damaged and cannot be repaired.

[0004] In order to solve the problems existing in manual inspections and monitoring by handheld devices, the current conventional practice is to use (single-point) sensor technology to perform single monitoring on one functional point of the vehicle-mounted equipment. Therefore, if the vehicle-mounted equipment has many functional points, a large number of sensors are required, resulting in increased monitoring costs and an overly complex monitoring system. Utility Model Content

[0005] Purpose of the utility model: In order to solve the problems existing in manual inspection and monitoring by handheld devices, as well as the problems existing in monitoring by sensor technology, the utility model proposes a device for real-time monitoring of the functional operating status of a vehicle-mounted weighing system.

[0006] Technical solution: A device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system, which is applied to the vehicle-mounted weighing system. The vehicle-mounted weighing system includes: a vehicle battery, a vehicle-mounted weighing sensor, a GPS module, a 4G module, and a driving motor for driving the tarpaulin to close or open; the device includes: an MCU chip, a voltage divider circuit, an ADC module, a networking module, a switch detection sensor, and a communication module;

[0007] The voltage divider circuit is used to divide the vehicle battery voltage to obtain a voltage divider value;

[0008] The ADC module is connected to the vehicle-mounted weighing sensor, and the ADC module converts the analog quantity collected by the vehicle-mounted weighing sensor into a digital quantity;

[0009] The networking module is connected to the 4G module and is used to determine whether the 4G module is disconnected from the network;

[0010] The switch detection sensor is connected to a driving motor for driving the tarpaulin to close or open, and is used to detect a switch signal of the driving motor;

[0011] The voltage divider circuit, ADC module, networking module, switch detection sensor, and GPS module are all connected to the MCU chip. The MCU chip is used to determine whether an undervoltage alarm is required based on the voltage divider value from the voltage divider circuit and the corresponding threshold value, and to determine whether an on-board weighing sensor network disconnection alarm is required based on the corresponding threshold value and the digital quantity from the ADC module, and to determine whether a 4G module network disconnection alarm is required based on the corresponding threshold value and the heartbeat packet from the networking module, and to determine whether a tarpaulin sealing monitoring missing alarm is required based on the corresponding threshold value and the switch signal from the switch detection sensor, and to determine whether a positioning missing alarm is required based on the corresponding threshold value and the positioning information from the GPS module;

[0012] The communication module is connected to the MCU chip and is used to transmit the alarm information to the outside.

[0013] Furthermore, the GPS module is connected to the uart module of the MCU chip.

[0014] Furthermore, the networking module is an AIR724UG networking module.

[0015] Furthermore, the switch detection sensor is a photoelectric coupler.

[0016] Furthermore, the vehicle-mounted weighing sensor is connected to an MCU chip, and the MCU chip is used to determine whether an overweight alarm is required based on a corresponding threshold value and weighing data from the vehicle-mounted weighing sensor.

[0017] Beneficial effects: Compared with the prior art, the utility model has the following advantages: The device proposed by the utility model takes the system function abnormality alarm as the core, and designs the undervoltage alarm component, the vehicle-mounted weighing sensor disconnection alarm component and the GPS offline alarm component, each of which is an independent and reusable component. Each component has its own functions and interfaces and can be independently developed and tested. The components communicate through interfaces to achieve loose coupling and high cohesion; the utility model also establishes an abnormal function warning mechanism for the vehicle-mounted weighing system. By comparing the actual operation data of the equipment function with the system preset threshold in real time, problems can be discovered and warned at the first time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a framework diagram of a device for real-time monitoring of the functional operating status of a vehicle-mounted weighing system. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is now further described in conjunction with the accompanying drawings.

[0020] This embodiment proposes a device for real-time monitoring of the functional operation status of the vehicle-mounted weighing system. The device takes the system function abnormality alarm as the core, and designs an undervoltage alarm component, a vehicle-mounted weighing sensor disconnection alarm component, and a GPS offline alarm component, etc. Each component is an independent and reusable component. Each component has its own functions and interfaces and can be independently developed and tested. The components communicate through interfaces, achieving loose coupling and high cohesion, and establishing a vehicle-mounted weighing system function abnormality warning mechanism. By comparing the actual operation data of the equipment function with the system preset threshold in real time, problems can be discovered and warned in the first time.

[0021] like Figure 1 As shown, the device proposed by the utility model is embedded in the main box of the vehicle-mounted weighing monitoring system, and the main box of the vehicle-mounted weighing monitoring system is arranged in the vehicle cab, and monitors the operating status of the power supply system, vehicle-mounted GPS system, overload warning system, vehicle-mounted tarpaulin (or door) not sealed warning system and other systems in the vehicle-mounted weighing system around the clock to see if they are normal. The operating status of the vehicle-mounted weighing system is directly related to the stability, reliability and measurement accuracy of the vehicle-mounted weighing. The operating status of the vehicle-mounted GPS system is directly related to the accurate positioning of freight vehicles in the target area and the precise tracking of the running trajectory. The operating status of the vehicle-mounted tarpaulin (or door) not sealed warning function is directly related to whether the spillage and dripping during the vehicle freight process can be effectively controlled. If it is found that the operating parameters are lower than the preset threshold, the device will report a warning signal to the driver, the car owner, the management platform and the relevant administrative department, so as to ensure that the entire on-board weighing system is in a stable operating state, and avoid the loss of monitoring functions such as vehicle overload warning, car door or tarpaulin not closed warning due to abnormal function of the on-board weighing monitoring system, which is also beneficial to improve driving safety.

[0022] Specifically, the device of this embodiment mainly includes an MCU chip GD32F405RGT6, a voltage divider circuit, an ADC module, an AIR724UG networking module, a switch detection sensor and a main communication box.

[0023] Among them, the voltage divider circuit is used to monitor the power status of the power supply system in the on-board weighing monitoring system; the voltage divider circuit proportionally reduces the vehicle battery voltage to a voltage range acceptable to the MCU chip, reads the voltage divider value through the ADC function of the MCU chip and converts it into a voltage value, and compares the voltage value with the preset threshold to determine whether the vehicle is under-voltage. If under-voltage, the MCU chip will send the judgment result to the outside through the main communication box for an under-voltage alarm, for example, transmit the judgment result to the networking platform to issue an under-voltage alarm.

[0024] Among them, the ADC module is the ADC module MS5194T, which is connected to the on-board weighing sensor in the on-board weighing system. The ADC module MS5194T converts the weighing analog quantity collected by the on-board weighing sensor into a digital quantity. The ADC module MS5194T is connected to the MCU chip. The MCU chip compares the data currently collected by the ADC module MS5194T with the pre-set data. When the on-board weighing sensor fails or is abnormally disconnected, the MCU chip will compare the abnormal data. The MCU chip will send the comparison result to the outside through the main communication box to issue an on-board weighing sensor disconnection alarm, for example, pass the judgment result to the networking platform, and issue an on-board weighing sensor disconnection alarm.

[0025] Among them, the GPS module of the vehicle weighing monitoring system is connected to the uart module of the MCU chip GD32F405RGT6, which is used to promptly alarm when the positioning is lost. When the GPS module fails to locate, the GPS module of the vehicle weighing monitoring system will send an empty location to the MCU chip, and the MCU chip will issue a GPS offline alarm through the main communication box.

[0026] Among them, the AIR724UG networking module of this embodiment is connected to the 4G module of the vehicle-mounted weighing monitoring system, and is used to promptly alarm when the line is disconnected. The AIR724UG networking module is used to obtain the heartbeat packet of the 4G module and pass the heartbeat packet of the 4G module to the MCU chip. When the 4G module of the vehicle-mounted weighing monitoring system is disconnected from the network, the MCU chip will not receive the heartbeat packet for a long time. At this time, the MCU chip issues a 4G module disconnection alarm through the main communication box.

[0027] Among them, the switch detection sensor of this embodiment is used to detect the switch of the motor and the forward and reverse rotation, so as to determine the closed state of the vehicle tarpaulin (or door). The switch detection sensor is connected to the MCU chip, and the MCU chip determines whether to perform the tarpaulin sealing monitoring missing alarm based on the information detected by the switch detection sensor. And the MCU chip can determine whether the motor is forward or reverse by detecting the position of the motor rotor relative to the position of the stator through the sensor. If the deviation between the position of the rotor and the position of the stator is less than 180 degrees, the motor rotates forward, otherwise it reverses, and the time threshold judgment factor is added to determine whether the vehicle tarpaulin is closed.

[0028] This embodiment collects required signals from the vehicle-mounted weighing monitoring system and compares the collected signals with the preset thresholds of this monitoring system to comprehensively determine whether the functional operation status of various vehicle-mounted weighing systems is normal.

Claims

1. A device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system, applied to the vehicle-mounted weighing system, the vehicle-mounted weighing system comprising: Vehicle battery, vehicle-mounted weighing sensor, GPS module, 4G module, and a driving motor for driving the tarpaulin to close or open; the device is characterized in that: the device includes: an MCU chip, a voltage divider circuit, an ADC module, a networking module, a switch detection sensor, and a communication module; The voltage divider circuit is connected to the vehicle battery and is used to divide the vehicle battery voltage to obtain a voltage divider value; The ADC module is connected to the vehicle-mounted weighing sensor, and the ADC module converts the analog quantity collected by the vehicle-mounted weighing sensor into a digital quantity; The networking module is connected to the 4G module and is used to determine whether the 4G module is disconnected from the network; The switch detection sensor is connected to a driving motor for driving the tarpaulin to close or open, and is used to detect a switch signal of the driving motor; The voltage divider circuit, ADC module, networking module, switch detection sensor, and GPS module are all connected to the MCU chip. The MCU chip is used to determine whether an undervoltage alarm is required based on the voltage divider value from the voltage divider circuit and the corresponding threshold value, and to determine whether an on-board weighing sensor network disconnection alarm is required based on the corresponding threshold value and the digital quantity from the ADC module, and to determine whether a 4G module network disconnection alarm is required based on the corresponding threshold value and the heartbeat packet from the networking module, and to determine whether a tarpaulin sealing monitoring missing alarm is required based on the corresponding threshold value and the switch signal from the switch detection sensor, and to determine whether a positioning missing alarm is required based on the corresponding threshold value and the positioning information from the GPS module; The communication module is connected to the MCU chip and is used to transmit the alarm information to the outside.

2. The device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system according to claim 1, characterized in that: The GPS module is connected to the uart module of the MCU chip.

3. The device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system according to claim 1, characterized in that: The networking module is an AIR724UG networking module.

4. The device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system according to claim 1, characterized in that: The switch detection sensor is a photoelectric coupler.

5. The device for real-time monitoring of the functional operation status of a vehicle-mounted weighing system according to claim 1, characterized in that: The vehicle-mounted weighing sensor is connected to an MCU chip, and the MCU chip is used to determine whether an overweight alarm is required based on a corresponding threshold value and weighing data from the vehicle-mounted weighing sensor.

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