CN117367636A - Intelligent detection device and method for illegal use of safety belt - Google Patents
Intelligent detection device and method for illegal use of safety belt Download PDFInfo
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- CN117367636A CN117367636A CN202311677684.4A CN202311677684A CN117367636A CN 117367636 A CN117367636 A CN 117367636A CN 202311677684 A CN202311677684 A CN 202311677684A CN 117367636 A CN117367636 A CN 117367636A
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 39
- 238000003825 pressing Methods 0.000 claims description 21
- 238000005070 sampling Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
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- 230000004048 modification Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/30—Arrangements in telecontrol or telemetry systems using a wired architecture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
- H04Q2209/43—Arrangements in telecontrol or telemetry systems using a wireless architecture using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/82—Arrangements in the sub-station, i.e. sensing device where the sensing device takes the initiative of sending data
- H04Q2209/823—Arrangements in the sub-station, i.e. sensing device where the sensing device takes the initiative of sending data where the data is sent when the measured values exceed a threshold, e.g. sending an alarm
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- General Health & Medical Sciences (AREA)
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an intelligent detection device and method for illegal use of a safety belt, which belong to the technical field of intelligent safety belts and comprise the following steps: a pressure detection unit; a bracket fixing unit for fixing the two pressure detecting units; the pressure detection unit includes: a pressure sensor support; a pressure sensor provided to the pressure sensor holder; the pressure acquisition circuit is used for acquiring data of the pressure sensor; the concentrator is provided with a gateway, and the gateway establishes data connection with the pressure detection unit; and the background system is used for processing the data uploaded by the gateway. The invention innovatively monitors the actions of constructors, and can output alarm signals to remind when the construction operation does not accord with regulations, so that the constructors can correct the actions in time, thereby effectively avoiding various risks caused by construction not according to the construction standard and avoiding accidents.
Description
Technical Field
The invention belongs to the technical field of intelligent safety belts, and particularly relates to an intelligent detection device and method for illegal use of a safety belt.
Background
In the safety production, the safety belt is the most powerful guarantee of high-altitude operation; serious life loss can be caused by a little negligence, and the use of the safety belt should be strictly regulated; in the actual use process, a few people do not strictly adhere to the regulations, and serious consequences are caused;
the use state of the safety belt comprises:
1. unhooked: indicating that the seat belt is not attached to a safe place and that the seat belt is in a natural sagging posture; for example, unused or during use, the hitching ring is loosened for replacement elsewhere;
2. normal hanging: indicating that the safety belt is normally hung on a safety place and is in a natural state, and the constructor can perform the next operation;
3. abnormal hanging: the safety belt is detected to bear abnormal tension, for example, a person steps on the safety belt and is in a suspended state, and emergency treatment is needed;
at present, the actions of constructors cannot be monitored through a safety belt, and an alarm signal cannot be output to remind when the construction operation does not meet the regulations, so that various risks of construction which are not performed according to the construction standard are caused; meanwhile, because the safety belt is used in a large amount, the total replacement cost is relatively high, and a device which can be added to the original safety belt hanging ring to achieve the monitoring purpose is not designed, the intelligent detection device and method for illegal use of the safety belt are required to be developed to solve the existing problems.
Disclosure of Invention
The invention aims to provide an intelligent detection device and method for illegal use of a safety belt, so as to solve the problem.
In order to achieve the above purpose, the present invention provides the following technical solutions: an intelligent detection device for illegal use of a safety belt, comprising:
a pressure detection unit comprising: a pressure sensor support and a pressure sensor arranged on the pressure sensor support;
a bracket fixing unit for fixing the two pressure detecting units;
the pressure acquisition circuit is used for acquiring data of the pressure sensor;
the concentrator is provided with a gateway, and the gateway establishes data connection with the pressure detection unit;
and the background system is used for processing the data uploaded by the gateway.
Preferably, the pressure sensor support includes:
a sensor holder fixing body;
and a bracket fixing rail connected to the sensor bracket fixing body;
wherein, be provided with the fixed slot on the sensor support fixed body and be used for installing pressure sensor's sensor mounting groove.
Preferably, the bracket fixing unit includes: a pressing plate and a pressing box matched with the pressing plate; the pressing box comprises a pressing box body; and a clamping groove which is fixed on the pressing box body and used for fixing the hanging ring; the pressing box body is provided with a singlechip board space and a fixing hole connected with the pressing board; the clamping groove is internally provided with a wiring groove and a bracket fixing groove connected with the pressure sensor bracket.
Preferably, the pressure acquisition circuit includes: battery, battery charging circuit, singlechip circuit and communication circuit.
Preferably, the pressure sensor bracket fixes the pressure sensor on the hanging ring, a movable stroke of 1 millimeter is arranged between the hanging ring and the pressure sensor bracket and is used for a deformation space of the pressure film sensor, and the pressure sensor is of the pressure film sensor type.
Preferably, the battery charging circuit includes:
a battery power management chip N1;
resistor R34 connected to EN pin of battery power management chip N1, capacitor C13 and capacitor C25 connected to VIN pin of battery power management chip N1; resistor R37 connected to IREF pin of battery power management chip N1; resistor R38 connected to IMIN pin of battery power management chip N1;
a voltage stabilizer N2;
a capacitor C12 and a capacitor C26 connected to the VIN pin of the voltage regulator N2; and a capacitor C27 connected to the VOUT pin of the voltage regulator N2.
Preferably, the pressure acquisition circuit includes:
resistor R41 and resistor R40;
the resistor R41 is connected with the resistor R14 and the capacitor C22;
the resistor R40 is connected with the resistor R13 and the capacitor C21;
an analog-to-digital conversion chip U1;
one end of the resistor R8 and the capacitor C2 are connected to an AINP1 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R8 is connected with the resistor R15;
one end of the resistor R7, the capacitor C1 and the capacitor C14 are connected to an AINN1 pin of the analog-digital conversion chip U1, and the other end of the resistor R7 is connected with a resistor R20 and a resistor R21;
one end of the resistor R10 and the capacitor C4 are connected to an AINP2 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R10 is connected with the resistor R16;
and one end of the resistor R9 is connected with the AINN2 pin of the analog-digital conversion chip U1, the capacitor C3 and the capacitor C15, and the other end of the resistor R9 is connected with the resistor R22 and the resistor R23.
The invention further provides a control method of the intelligent detection device for illegal use of the safety belt, comprising the following steps: the gateway control method comprises the following steps:
the background system issues a managed pressure sensor list ID to a corresponding gateway, and each pressure sensor is subordinate to one gateway;
the gateway is configured according to a configuration table, comprising: configuring an uplink and configuring a local downlink;
according to the configuration table, the gateway scans the pressure sensors in the range and sends the searching signaling message with the ID of the pressure sensor one by one at regular time;
the pressure sensor receives the searching signaling message sent by the gateway, and if the ID of the pressure sensor is matched with the self number, a response message is sent to the gateway, and connection is established with the gateway;
the gateway issues configuration parameters corresponding to the pressure sensor according to the pressure sensor ID, wherein the configuration parameters comprise a threshold value, the threshold value comprises a hooking threshold value and an abnormal hooking threshold value, and the interval is reported at regular time;
notifying the pressure sensor to start transmitting data, wherein the data comprises a pressure value, a preliminary judgment result, an electric quantity value and a pressure sensor ID;
receiving and caching data of the pressure sensor, packaging the data according to the requirement of an uploading protocol, and sending the data to a background system;
and after the background system finds the violation, responding to the background system demand to carry out acousto-optic warning.
Preferably, the method further comprises: a pressure sensor control method;
the method comprises the following steps: the pressure sensor receives the gateway connection request signal, performs ID matching, enters a connection flow when the ID of the gateway is matched with the ID of the pressure sensor, sends a connection response to the gateway, and establishes communication connection;
after communication connection, receiving a gateway issuing threshold value and an automatic data reporting interval, and storing the gateway issuing threshold value by the pressure sensor for monitoring subsequent matching at the time;
the pressure sensor collects a pressure value;
comparing the collected pressure value with a threshold value by the pressure sensor, judging the threshold value, and generating a pre-judging state and an alarm state;
the pressure sensor reports data to the connected gateway, the reporting data comprising: pressure sensor ID, battery power value, current pressure value, pre-determined status and alarm status.
Preferably, the method for collecting the pressure value by the pressure sensor comprises the following steps:
when the pressure sensor bracket receives pressure, the pressure is transferred to the pressure sensor, and at the moment, the resistance value of the pressure sensor is changed, so that the current change passing through the pressure sensor is influenced, and the voltage of a sampling point is changed;
the sensing signal of the pressure sensor is resistance change, the pressure sensor is connected to a pressure acquisition circuit, and the singlechip circuit acquires the voltage at the lower side of the resistor R41;
the voltage dividing circuit applies a sampling reference voltage, and current flows through the resistor R41 and the pressure sensor;
one end of the pressure sensor is grounded, the other end of the pressure sensor is connected with an ADC sampling point, the ADC sampling point is connected with a reference voltage point through a measuring resistor, and the voltage change at the lower side of the resistor R41 is caused by the resistance value change of the pressure sensor;
comparing the sampled value Rm of the sampling point with the resistor R41: rm=R41/(VFULL/Vadc-1), wherein VFULL is the ADC acquisition full scale value, and Vadc is the ADC chip output value;
inquiring a physical characteristic table of the pressure sensor, and converting the resistance value into a pressure value;
collecting pressure values of the upper end and the lower end of the hanging ring, judging the upper-lower relation of the two sensors, and subtracting the weight of the hanging ring to obtain an actual pressure value;
and judging whether the pressure value is lower than the unhooking threshold value.
The invention has the technical effects and advantages that: the intelligent detection device and the intelligent detection method for illegal use of the safety belt comprise one or more detection sensor devices and a gateway concentrator device, wherein the detection sensor devices detect the current use state of the safety belt, judge whether the gateway device is correctly used or not, receive data sent by the sensor and transmit the data to a corresponding system according to networking settings; meanwhile, because the safety belt is used in a large amount, the total replacement cost is relatively high, and the scheme is designed to be capable of being added to the original safety belt hanging ring to carry out intelligent transformation, so that the purpose of monitoring is achieved.
Drawings
FIG. 1 is a schematic diagram of an apparatus of the present invention;
FIG. 2 is a front view of a pressure sensor bracket of the present invention;
FIG. 3 is a perspective view of a pressure sensor bracket of the present invention;
FIG. 4 is a schematic view of the structure of the press box of the present invention;
FIG. 5 is a circuit diagram of a battery charging circuit of the present invention;
FIG. 6 is a flow chart of gateway control of the present invention;
FIG. 7 is a circuit diagram of a pressure acquisition circuit of the present invention;
FIG. 8 is a circuit diagram of a communication circuit according to the present invention;
FIG. 9 is a circuit diagram of a single chip microcomputer circuit of the present invention;
FIG. 10 is a flow chart of a pressure sensor control method of the present invention;
FIG. 11 is a flow chart of the pressure sensor of the present invention collecting pressure values;
FIG. 12 is a schematic view of the installation position of the device and the hanging ring according to the present invention.
In the figure: 11. a sensor holder fixing body; 12. a bracket fixing rail; 13. a fixing groove; 14. a sensor mounting groove; 21. a pressing box body; 22. a clamping groove; 23. a singlechip board space; 24. a fixing hole; 25. wiring grooves; 26. and a bracket fixing groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an intelligent detection device for illegal use of a safety belt, as shown in fig. 1 and 2, comprising:
the gateway and the one or more pressure sensors can be matched with a background system to operate or independently operate; the upper limit of the number of the sensors which can be connected with the same gateway is 256, and the actual number is determined according to the actual use condition of the site; when in use, the sensor list ID is set to the gateway through a background system or independent software, and the gateway is only connected and communicated with the sensors in the list; when the pressure sensor is used, the on-site safety belt hooking condition is acquired in real time, and the correspondingly acquired data is uploaded to the gateway; the pressure sensor is connected with the gateway concentrator in a wireless way, the wireless connection gateway is positioned on the concentrator, and the connection mode is a Bluetooth, WIFI or other micropower wireless mode according to actual conditions;
the gateway is provided with a wireless interface and a wired interface, and is connected with the outside in a wireless or wired mode, and according to actual conditions, a WIFI (wireless fidelity) and other networks can be used, the gateway sends real-time information of all pressure sensors to a background system in a wireless or wired mode for processing, and meanwhile, the gateway is externally connected with an audible and visual alarm, and when a violation occurs, audible and visual reminding is carried out on a user; the background system configures the gateway, sends the sensor ID and each parameter to the gateway, and the gateway sends the sensor ID and each parameter to the pressure sensor for judgment after the sensor is connected; meanwhile, the background system processes the data uploaded by the gateway, displays, alarms, reminders and the like;
in this embodiment, as shown in fig. 12, the seat belt link body and the link lock are standard components; the pressure sensor is a pressure film sensor, the upper part and the lower part of the hanging ring of the safety belt are respectively provided with a pressure film sensor, one surface of the pressure film sensor is attached to the original hanging ring through a gasket, and the other surface of the pressure film sensor is contacted with the movable pressure sensor bracket;
as shown in fig. 2 and 3, the pressure sensor support includes: a sensor holder fixing body 11; and a holder fixing rail 12 connected to the sensor holder fixing body 11; wherein, the sensor bracket fixing body 11 is provided with a fixing groove 13 and a sensor mounting groove 14 for mounting a pressure sensor;
each pressure film sensor is connected to a pressure acquisition circuit through two wires, and the upper part and the lower part of the hanging ring of the safety belt are respectively provided with a pressure sensor bracket for fixing the pressure film sensor on the hanging ring, and meanwhile, a movable stroke of about one millimeter is used for a deformation space of the pressure film sensor; the safety belt presses the pressure film sensor through the pressure sensor bracket, so that the resistance value is changed; the bracket fixing unit is used for fixing the bracket on the inner side of the hanging ring, and simultaneously, the bracket can move up and down in a small range, and expands a space outwards for accommodating the battery and the circuit board; the pressure acquisition circuit and the communication circuit are arranged in the bracket fixing unit, and the pressure film sensor is connected to the pressure acquisition circuit through a wire; the acquisition unit comprises a battery, a battery charging circuit, a singlechip circuit and a communication circuit; the communication circuit is shown in fig. 8, and the singlechip circuit is shown in fig. 9;
as shown in fig. 5, the battery charging circuit includes:
a battery power management chip N1;
resistor R34 connected to EN pin of battery power management chip N1, capacitor C13 and capacitor C25 connected to VIN pin of battery power management chip N1; resistor R37 connected to IREF pin of battery power management chip N1; resistor R38 connected to IMIN pin of battery power management chip N1;
a voltage stabilizer N2;
a capacitor C12 and a capacitor C26 connected to the VIN pin of the voltage regulator N2; and a capacitor C27 connected to the VOUT pin of the voltage regulator N2.
As shown in fig. 7, the pressure acquisition circuit includes:
resistor R41 and resistor R40;
the resistor R41 is connected with the resistor R14 and the capacitor C22;
the resistor R40 is connected with the resistor R13 and the capacitor C21;
an analog-to-digital conversion chip U1;
one end of the resistor R8 and the capacitor C2 are connected to an AINP1 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R8 is connected with the resistor R15;
one end of the resistor R7, the capacitor C1 and the capacitor C14 are connected to an AINN1 pin of the analog-digital conversion chip U1, and the other end of the resistor R7 is connected with a resistor R20 and a resistor R21;
one end of the resistor R10 and the capacitor C4 are connected to an AINP2 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R10 is connected with the resistor R16;
and one end of the resistor R9 is connected with the AINN2 pin of the analog-digital conversion chip U1, the capacitor C3 and the capacitor C15, and the other end of the resistor R9 is connected with the resistor R22 and the resistor R23.
The communication circuit is used for receiving the data sent by the gateway, forwarding the data to the singlechip for processing, responding to the request sent by the singlechip, and sending the data to the gateway;
the singlechip circuit is used for monitoring the electric quantity of the battery, when the electric quantity of the battery is low, an alarm signal is set, the ADC module is started to collect the pressure value, and meanwhile, the pressure sensor 1 and the pressure sensor 2 are collected, and the pressure value is calculated respectively; calculating two sensor data, wherein the upper end with a large pressure value is the lower end with a small pressure value, removing the weight of the hanging ring, and comparing the average value with a threshold value to perform state judgment; checking time, and reporting data according to the set data reporting interval until time;
the bracket fixing unit comprises an upper piece and a lower piece which are combined to form a closed space, the clamping groove is used for fixing the pressure film sensor bracket on the hanging ring, and a certain up-down moving space is provided for moving up and down when the sensor is deformed; the fixing holes are used for fixing the upper and lower units to form a whole; the singlechip space is used for placing a singlechip circuit and a battery;
in this embodiment, as shown in fig. 4, the bracket fixing unit includes: a pressing plate and a pressing box matched with the pressing plate; the press box comprises a press box body 21; and a clamping groove 22 fixed on the pressing box body 21 for fixing the hanging ring; the pressing box body 21 is provided with a singlechip board space 23 and a fixing hole 24 connected with the pressing board; a wiring groove 25 and a bracket fixing groove 26 connected with the pressure sensor bracket are arranged in the clamping groove 22;
the invention further provides a control method of the intelligent detection device for illegal use of the safety belt, as shown in fig. 10, comprising a pressure sensor control method;
step 11, the management software transmits the pressure sensor ID to be monitored to a gateway, after the gateway is started, the pressure sensors nearby are scanned, and after the pressure sensors in the list are found, a connection request is sent, wherein the request is provided with the corresponding pressure sensor ID;
step 12, the pressure sensor waits for a gateway connection request, receives a gateway connection request signal, performs ID matching, enters a connection flow when the ID of the gateway is matched with the ID of the pressure sensor, sends a connection response to the gateway, and establishes communication connection;
step 13, after connection, receiving a gateway issuing threshold value and an automatic data reporting interval, and storing the threshold value issued by the gateway by the pressure sensor for monitoring subsequent matching at the present time;
step 14, the pressure sensor collects voltage through an ADC interface of the singlechip circuit, converts the voltage into a resistance value of the pressure film sensor according to the voltage and a matching resistor, and then the singlechip conversion software module maps the resistance value into a pressure value according to a physical characteristic table of the pressure film sensor, namely a pressure-resistance correspondence table;
step 15, the pressure sensor compares the collected pressure value with a threshold value, and carries out threshold value judgment to generate a pre-judgment state and an alarm state;
step 16, the pressure sensor reports data to the connected gateway, wherein the data content comprises: a pressure sensor ID, a battery power value, a current pressure value, a pre-judging state, an alarm state and the like;
a gateway control method as shown in fig. 6;
step 21, the background system issues a pressure sensor list ID to be managed to a corresponding gateway, different gateways manage different pressure sensors, one sensor is only subordinate to one gateway, and two gateways cannot both receive the same sensor information;
step 22, starting a gateway to a construction site;
step 23, after starting, the gateway performs configuration according to the configuration table, including: a) Configuring uplink, such as wired connection, 4G network, WIFI and the like; b) Configuring local downlink, such as WIFI, LORA, bluetooth, etc.;
step 24, according to the configuration table, scanning the pressure sensors in the range, and sending the search signaling messages with the sensor IDs one by the gateway at regular time;
step 25, the pressure sensor receives the searching signaling message sent by the gateway, and if the ID of the pressure sensor is matched with the number of the pressure sensor, a response message is sent to the gateway, and connection is established with the gateway;
step 26, the gateway issues configuration parameters corresponding to the pressure sensor according to the pressure sensor ID, wherein the configuration parameters comprise a threshold value (a hooking threshold value, an abnormal hooking threshold value) and reports intervals at regular time;
step 27, notifying the pressure sensor to start transmitting data, wherein the data comprise a pressure value, a preliminary judgment result, an electric quantity value and a pressure sensor ID;
28, receiving and caching the data of the pressure sensor, packaging the data according to the requirement of an uploading protocol, and sending the data to a background system, wherein the protocol data format comprises MQTT, HTTP and the like;
and 29, after the background finds the violation, responding to the background demand to carry out acousto-optic warning.
As shown in fig. 11, a method for collecting a pressure value by a pressure sensor includes:
step 31, when the pressure sensor bracket receives pressure, the pressure is transferred to the pressure sensor, so that the resistance value of the pressure sensor is changed, the current change passing through the pressure sensor is influenced, the voltage change of a sampling point is influenced, and the voltage of the sampling point is acquired through an ADC (analog-to-digital converter), so that the voltage value is acquired;
step 32, the sensing signal of the pressure sensor is resistance change, the pressure sensor is connected to a pressure acquisition circuit through two wires, and the singlechip circuit acquires the voltage at the lower side of the resistor R41;
step 33, applying a sampling reference voltage to the top end of the voltage dividing circuit, and enabling current to flow through R41 and the pressure sensor;
step 34, one end of the pressure sensor is grounded, the other end of the pressure sensor is connected with an ADC sampling point, and the upper end of the ADC sampling point is connected to a reference voltage point through a measuring resistor, so that the voltage on the lower side of R41 is changed due to the change of the resistance value of the pressure sensor;
step 35, comparing the relation between the sampling value Rm of the sampling point and the measuring resistor R41 is: rm=R41/(VFULL/Vadc-1); wherein VFULL is ADC to collect full scale value, vadc is ADC chip output value;
step 36, inquiring a physical characteristic table of the pressure sensor, and converting the resistance value into a pressure value;
step 37, collecting pressure values of the upper end and the lower end of the hanging ring, judging the upper-lower relation of the two pressure sensors, and subtracting the weight of the hanging ring to obtain an actual pressure value;
step 38, determining whether the pressure value is lower than the unhooked threshold value.
The intelligent detection device and the intelligent detection method for illegal use of the safety belt comprise one or more detection sensor devices and a gateway concentrator device, wherein the detection sensor devices detect the current use state of the safety belt, judge whether the gateway device is correctly used or not, receive data sent by the sensor and transmit the data to a corresponding system according to networking settings. Meanwhile, because the safety belt is used in a large amount, the total replacement cost is relatively high, and the scheme is designed to be capable of being added to the original safety belt hanging ring to carry out intelligent transformation, so that the purpose of monitoring is achieved.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. Intelligent detection device is used in violation of safety belt, its characterized in that: comprising the following steps:
a pressure detection unit comprising: a pressure sensor support and a pressure sensor arranged on the pressure sensor support;
a bracket fixing unit for fixing the two pressure detecting units;
the pressure acquisition circuit is used for acquiring data of the pressure sensor;
the concentrator is provided with a gateway, and the gateway establishes data connection with the pressure detection unit;
and the background system is used for processing the data uploaded by the gateway.
2. A belt violation use intelligent detection device according to claim 1, characterized in that: the pressure sensor support includes:
a sensor holder fixing body (11);
and a bracket fixing rail (12) connected to the sensor bracket fixing body (11);
wherein, be provided with fixed slot (13) and be used for installing pressure sensor's sensor mounting groove (14) on sensor support fixed body (11).
3. A belt violation use intelligent detection device according to claim 1, characterized in that: the bracket fixing unit includes: a pressing plate and a pressing box matched with the pressing plate; the press box comprises a press box body (21); and a clamping groove (22) which is fixed on the pressing box body (21) and used for fixing the hanging ring; the pressing box body (21) is provided with a singlechip board space (23) and a fixing hole (24) connected with the pressing plate; the clamping groove (22) is internally provided with a wiring groove (25) and a bracket fixing groove (26) connected with the pressure sensor bracket.
4. A belt violation use intelligent detection device according to claim 1, characterized in that: the pressure acquisition circuit includes: battery, battery charging circuit, singlechip circuit and communication circuit.
5. A belt violation use intelligent detection device according to claim 1, characterized in that: the pressure sensor bracket is used for fixing the pressure sensor on the hanging ring, a movable stroke of 1 millimeter is arranged between the hanging ring and the pressure sensor bracket and is used for a deformation space of the pressure film sensor, and the type of the pressure sensor is the pressure film sensor.
6. The intelligent detection device for the illegal use of safety belts according to claim 4, characterized in that: the battery charging circuit includes:
a battery power management chip N1;
resistor R34 connected to EN pin of battery power management chip N1, capacitor C13 and capacitor C25 connected to VIN pin of battery power management chip N1; resistor R37 connected to IREF pin of battery power management chip N1; resistor R38 connected to IMIN pin of battery power management chip N1;
a voltage stabilizer N2;
a capacitor C12 and a capacitor C26 connected to the VIN pin of the voltage regulator N2; and a capacitor C27 connected to the VOUT pin of the voltage regulator N2.
7. The intelligent detection device for the illegal use of safety belts according to claim 4, characterized in that: the pressure acquisition circuit includes:
resistor R41 and resistor R40;
the resistor R41 is connected with the resistor R14 and the capacitor C22;
the resistor R40 is connected with the resistor R13 and the capacitor C21;
an analog-to-digital conversion chip U1;
one end of the resistor R8 and the capacitor C2 are connected to an AINP1 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R8 is connected with the resistor R15;
one end of the resistor R7, the capacitor C1 and the capacitor C14 are connected to an AINN1 pin of the analog-digital conversion chip U1, and the other end of the resistor R7 is connected with a resistor R20 and a resistor R21;
one end of the resistor R10 and the capacitor C4 are connected to an AINP2 pin of the analog-to-digital conversion chip U1, and the other end of the resistor R10 is connected with the resistor R16;
and one end of the resistor R9 is connected with the AINN2 pin of the analog-digital conversion chip U1, the capacitor C3 and the capacitor C15, and the other end of the resistor R9 is connected with the resistor R22 and the resistor R23.
8. A control method of a safety belt violation use intelligent detection device based on claim 7, characterized in that: comprising the following steps: the gateway control method comprises the following steps:
the background system issues a managed pressure sensor list ID to a corresponding gateway, and each pressure sensor is subordinate to one gateway;
the gateway is configured according to a configuration table, comprising: configuring an uplink and configuring a local downlink;
according to the configuration table, the gateway scans the pressure sensors and sends the searching signaling message with the ID of the pressure sensor one by one at regular time;
the pressure sensor receives the searching signaling message sent by the gateway, and if the ID of the pressure sensor is matched with the self number, a response message is sent to the gateway, and connection is established with the gateway;
the gateway issues configuration parameters corresponding to the pressure sensor according to the pressure sensor ID, wherein the configuration parameters comprise a threshold value, the threshold value comprises a hooking threshold value and an abnormal hooking threshold value, and the interval is reported at regular time;
notifying the pressure sensor to start transmitting data, wherein the data comprises a pressure value, a preliminary judgment result, an electric quantity value and a pressure sensor ID;
receiving and caching data of the pressure sensor, packaging the data according to the requirement of an uploading protocol, and sending the data to a background system;
and after the background system finds the violation, responding to the background system demand to carry out acousto-optic warning.
9. A control method of a safety belt violation use intelligent detection device based on the claim 8, characterized in that: the method further comprises the steps of: a pressure sensor control method;
the method comprises the following steps: the pressure sensor receives the gateway connection request signal, performs ID matching, enters a connection flow when the ID of the gateway is matched with the ID of the pressure sensor, sends a connection response to the gateway, and establishes communication connection;
after communication connection, receiving a gateway issuing threshold value and an automatic data reporting interval, and storing the gateway issuing threshold value by the pressure sensor for monitoring subsequent matching at the time;
the pressure sensor collects a pressure value;
comparing the collected pressure value with a threshold value by the pressure sensor, judging the threshold value, and generating a pre-judging state and an alarm state;
the pressure sensor reports data to the connected gateway, the reporting data comprising: pressure sensor ID, battery power value, current pressure value, pre-determined status and alarm status.
10. A control method of a safety belt violation use intelligent detection device based on claim 9, characterized in that: the method for collecting the pressure value by the pressure sensor comprises the following steps:
when the pressure sensor bracket receives pressure, the pressure is transferred to the pressure sensor, and at the moment, the resistance value of the pressure sensor is changed, so that the current change passing through the pressure sensor is influenced, and the voltage of a sampling point is changed;
the sensing signal of the pressure sensor is resistance change, the pressure sensor is connected to a pressure acquisition circuit, and the singlechip circuit acquires the voltage at the lower side of the resistor R41;
the voltage dividing circuit applies a sampling reference voltage, and current flows through the resistor R41 and the pressure sensor;
one end of the pressure sensor is grounded, the other end of the pressure sensor is connected with an ADC sampling point, the ADC sampling point is connected to a reference voltage point through a measuring resistor, and the voltage change at the lower side of the resistor R41 is caused by the change of the resistance value of the pressure sensor;
comparing the sampled value Rm of the sampling point with the resistor R41: rm=R41/(VFULL/Vadc-1), wherein VFULL is the ADC acquisition full scale value, and Vadc is the ADC chip output value;
inquiring a physical characteristic table of the pressure sensor, and converting the resistance value into a pressure value;
collecting pressure values of the upper end and the lower end of the hanging ring, judging the upper-lower relation of the two sensors, and subtracting the weight of the hanging ring to obtain an actual pressure value;
and judging whether the pressure value is lower than the unhooking threshold value.
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|---|---|
| CN117367636B (en) | 2024-02-20 |
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