CN211720746U - Car door extrusion force measuring system - Google Patents
Car door extrusion force measuring system Download PDFInfo
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- CN211720746U CN211720746U CN202020486113.8U CN202020486113U CN211720746U CN 211720746 U CN211720746 U CN 211720746U CN 202020486113 U CN202020486113 U CN 202020486113U CN 211720746 U CN211720746 U CN 211720746U
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Abstract
The utility model discloses a door extrusion force measurement system, including the handheld device, the handheld device pass through the smart mobile phone and be connected with backend server, the handheld device includes the casing, the casing bottom is connected with the handle, the one end of casing is the stiff end, the other end is for removing the end, stiff end and removal end contact with the door of train respectively, door pressure value that will record shows on the handheld device, simultaneously with data on transmitting the smart mobile phone through the bluetooth, can input corresponding area on the interface of smart mobile phone, the subway line, the train number, the door number is related its and the pressure value that records, final smart mobile phone is with the information of handheld device, the pressure value information that measuring time information and surveyed the door are related uploads the backend server through self wireless network. The utility model discloses with the crowded pressure value of measured door and measured data packing send the backend server end, ensure measured data's authenticity, can trace back data measurement's source, prevent to make false.
Description
Technical Field
The utility model relates to an extrusion force measuring device especially relates to a door extrusion force measurement system.
Background
The existing vehicle door extrusion force measuring device is basically independent equipment, cannot realize interconnection and intercommunication with a smart phone and a background server, cannot ensure the authenticity of recorded data, cannot trace back to the source of data measurement, has a single measuring mode, cannot record the pressure value of each position of one door at the same time, cannot associate the measured pressure value with the corresponding train number and door number, and cannot realize storage and historical query of measured data.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a door extrusion force measurement system can send measured door extrusion force value and measured data packing to backend server end.
The technical scheme is as follows: the utility model discloses a handheld device for measuring train door extrusion force, handheld device pass through the smart mobile phone and be connected with backend server, handheld device include the casing, the casing bottom is connected with the handle, the one end of casing is the stiff end, the other end is for removing the end, the stiff end with remove the end respectively with the door leaf contact of train door, the door pressure value that will record shows on the casing, send data to backend server through the smart mobile phone simultaneously on.
The hardware of the handheld device comprises a data acquisition circuit, a data processing circuit, a key switching circuit, a Bluetooth transmission circuit, a liquid crystal display circuit and a power supply circuit, all circuits are powered by the power supply circuit, the input end of the data processing circuit is connected with the data acquisition circuit, and the output end of the data processing circuit is connected with the key switching circuit, the Bluetooth transmission circuit and the liquid crystal display circuit.
The data acquisition circuit adopts a pressure sensor circuit, and the pressure sensor circuit converts the received vehicle door squeezing value into an electric signal.
The key switching circuit can switch the interfaces of the liquid crystal display circuit in single measurement and multiple continuous measurements.
The liquid crystal display circuit and the APP interface of the smart phone are switched synchronously.
The handheld device is connected with the smart phone through a Bluetooth transmission circuit.
The smart phone sends data to the background server through a wireless network.
And the background server is provided with a query interface and a data display interface.
The shell is provided with a liquid crystal screen, and the measured pressure value is displayed on the liquid crystal screen in real time.
Has the advantages that: the utility model has the advantages of it is following:
(1) the measured vehicle door squeezing pressure value and the measured data can be packaged and sent to the background server end, so that the authenticity of the measured data is ensured, the source of data measurement can be traced, and falsification is prevented;
(2) the data acquisition circuit, the data processing circuit, the key switching circuit, the liquid crystal display circuit, the Bluetooth transmission circuit and the power supply circuit are integrated into the handheld device, so that the volume of the measuring device can be greatly reduced on the premise of not influencing normal measurement, and the data transmission efficiency is improved;
(3) the utility model discloses a smart mobile phone passes through bluetooth transmission technology and establishes connection with handheld device, inputs corresponding area, subway line, train number, door number at cell-phone APP end, can associate it with the pressure value that measures to can realize the function to the storage of data and inquiry at the smart mobile phone end, the button on the handheld device can switch over the interface of liquid crystal display screen display interface and smart mobile phone APP on the handheld device simultaneously, realize the switching of single measurement and cubic continuous measurement mode, satisfy customer's multiple operation requirement;
(4) the utility model discloses a backend server utilizes smart mobile phone self network (3G/4G/5G) to establish rather than being connected, smart mobile phone APP end is after receiving the pressure value that handheld device uploaded, get up its train number with the input, the gate number is relevant, exist in the cell-phone APP simultaneously and send the server end through wireless network (3G/4G/5G), the server end can receive the data that a plurality of equipment uploaded, and in having it in the server, can look over the pressure value of surveying the door on the server in real time.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present invention;
fig. 2 is a schematic circuit diagram of the handheld device of the present invention;
FIG. 3 is a schematic structural diagram of the handheld device of the present invention;
fig. 4 is an APP interface diagram of the smart phone of the present invention;
fig. 5 is a background server interface diagram of the present invention;
fig. 6 is a measurement flow chart of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 5, the utility model discloses an extrusion force measurement system 101 includes handheld device 301, smart mobile phone and backend server 102, and handheld device 301 passes through the smart mobile phone to be connected with backend server 102, and handheld device 301 is used for measuring the extrusion pressure value of train 108 door 107. As shown in fig. 1, the squeezing force of the vehicle door 107 is measured by using a first handheld device 104, and the squeezing force of the other vehicle door is measured by using a second handheld device 105, wherein the first handheld device 104 is connected with a first smart phone 103, the second handheld device 105 is connected with a second smart phone 106, and both the first smart phone 103 and the second smart phone 106 are connected with a background server 102. The first handheld device 104 displays the measured extrusion force value of the vehicle door 107 on the liquid crystal display screen of the first handheld device 104 on one hand, and on the other hand, the extrusion force value is sent to the first smart phone 103 in a bluetooth mode, corresponding areas, subway lines, train numbers and door numbers can be input on the interface of the first smart phone 103 to be associated with the measured pressure value, and finally the first smart phone 103 uploads the information of the first handheld device 104, the measurement time information and the pressure value information associated with the measured vehicle door to the background server 102 through a wireless network (3G/4G/5G). Meanwhile, the second handheld device 105 can also send the measured extrusion force value of the vehicle door to the second smart phone 106 in a bluetooth transmission manner, and finally the second smart phone 106 uploads the pressure value associated with the second handheld device 105 and the measured vehicle door to the background server 102 through a network (3G/4G/5G) thereof. The background server 102 can receive data uploaded by different regions, different handheld devices and smart phones, and can display various information on the background server 102 in real time, and realize functions of storing and querying data.
As shown in fig. 2, the hardware 201 of the handheld device includes a data acquisition circuit 202, a data processing circuit 208, a key switching circuit 212, a bluetooth transmission circuit 213, a liquid crystal display circuit 214, and a power supply circuit 204. All circuits are powered by the power supply circuit 204, the input end of the data processing circuit 208 is connected with the data acquisition circuit 202, and the output end is connected with the key switching circuit 212, the Bluetooth transmission circuit 213 and the liquid crystal display circuit 214. The data acquisition circuit 202 is composed of a pressure sensor circuit 203; the data processing circuit 208 is composed of a minute signal amplifying circuit 209, a noise filtering circuit 210, and a main control chip 211. The key switching circuit 212 is connected with the main control chip 211 through a common I/O port; the bluetooth transmission circuit 213 is connected with the main control chip 211 in a UART manner; the lcd display circuit 214 is connected to the main control chip 211 by means of an SPI bus. The power supply circuit 204 is composed of a rechargeable lithium battery 207, a power supply conversion chip II 206 and a power supply conversion chip I205, 5.0V voltage output by the power supply conversion chip I205 supplies power for the pressure sensor circuit 203 in the data acquisition circuit 202 and also supplies power for the micro signal amplification circuit 209 and the noise signal filtering circuit 210, and 3.3V voltage output by the power supply conversion chip II 206 supplies power for the main control chip 211, the liquid crystal display circuit 214 and the Bluetooth transmission circuit 213. Pressure sensor circuit 203 converts the crowded pressure value of received door into the signal of telecommunication, little signal amplification circuit 209 enlargies the signal of telecommunication of pressure sensor circuit 203 output, noise filter circuit 210 filters the noise signal in the signal, finally send the signal of telecommunication after filtering to main control chip 211, main control chip 211 utilizes relevant algorithm calculation to obtain corresponding pressure value, on the one hand real-time display measured pressure value on LCD screen circuit 214, on the other hand send data to the smart mobile phone through bluetooth transmission circuit 213, button switching circuit 212 can carry out single measurement and the interface switching of cubic continuous measurement, when switching, the APP interface of LCD screen display circuit 214 and smart mobile phone keeps the synchronous switch.
As shown in fig. 3, the handheld device 301 includes a housing 303, a handle 305 is connected to a bottom of the housing 303, one end of the housing 303 is a fixed end 304, and the other end is a movable end 302, and a liquid crystal screen is disposed on the housing 303. Mounting the data acquisition circuit 202 at the fixed end 304 of the handheld device 301; the liquid crystal display circuit 214 is mounted in the housing 303; the data processing circuit 208, the key switching circuit 212, the bluetooth transmission circuit 213, and the power supply circuit 204 are all mounted to the handle 305 of the handheld device 301. A spring is installed in the shell 303 and connected with the movable end 302 through the spring, and the extrusion stroke of the movable end 302 is 3 cm. When the door pressing force is measured, the door leaf presses the movable end 302 and the fixed end 304 of the handheld device 301, the movable end 302 of the handheld device 301 is connected with the spring, and the door pressing force received by the door is indirectly transmitted to the pressure sensor circuit 203 installed at the fixed end 304 through the spring. The handheld device 301 can display the measured door pressure value on the lcd display circuit 214 installed at the housing 303, and on the other hand, can transmit the measured data to the smart phone through the bluetooth transmission circuit 213. The key switching circuit 212 installed at the handle 305 of the handheld device 301 can switch the interface of the lcd display circuit 214 between single measurement and three continuous measurements, and the APP interface of the smart phone connected to the interface is switched synchronously.
The handheld device 301 integrates the data acquisition circuit 202, the data processing circuit 208, the key switching circuit 212, the liquid crystal display circuit 214, the bluetooth transmission circuit 213 and the power supply circuit 204 inside the handheld device 301, indirectly transmit the pressure value of the car door to the pressure sensor through the spring, the pressure sensor converts the measured car door extrusion force value into an electric signal which can be processed, the electric signal is converted into the pressure value by the data processing circuit 208 in the handheld device 301, and then the pressure value is synchronously displayed on the liquid crystal display of the handheld device 301, and simultaneously, the measured result can be sent to the APP of the smart phone through the bluetooth transmission mode, and the corresponding area, the subway line, the train number and the car door number can be input on the mobile phone APP interface to be associated with the measured pressure value. When the key on the handheld device 301 switches between the single measurement mode and the three continuous measurement modes, the liquid crystal screen of the handheld device 301 and the interface of the smart phone APP are synchronously switched. The background server 102 is connected with the smart phone through a network (3G/4G/5G) of the smart phone, when a plurality of devices measure simultaneously, data measured by the devices can be sent to the server for displaying and storing, and the extrusion pressure value of the measured car door can be checked in a unified mode at the server side.
As shown in fig. 4, the smart phone APP interface 401 is composed of a smart phone APP login interface 402, a smart phone APP interface one 403, and a smart phone APP interface two 404. When the handheld device 301 is connected with the smart phone, first, personal information is logged in the smart phone APP login interface 402, and after the login is completed, whether the current interface is the first smart phone APP interface 403 or the second smart phone APP interface 404 can be determined. Before measurement, the electronic tag on the vehicle door is identified by using the NFC function in the interface so as to acquire information of the area, the subway line, the train number and the door number, and when the NFC function fails, the electronic tag can be measured by using the handheld device 301 after the area, the subway line, the train number and the door number are manually input at the corresponding position of the interface. The measured extrusion pressure value of the vehicle door can be associated with the corresponding region, subway line, train number and door number by the method, and the associated information can be stored in the smart phone. After a key at the handle 305 of the handheld device 301 is pressed, the lcd display circuit 214 of the handheld device 301 and the smart phone APP interface 401 are switched synchronously, and the switching between the first smart phone APP interface 403 and the second smart phone APP interface 404 is performed, so as to realize the switching between the single measurement mode and the three-time continuous measurement mode. On one hand, the data query function can be realized in the smart phone, and on the other hand, the data can be sent to the background server 102 by using the wireless network (3G/4G/5G) of the smart phone.
After receiving the information uploaded by the handheld device 301, the smart phone will re-encapsulate the data into a data packet in a private protocol manner, where the data packet includes the maximum value, the effective value, the measurement mode, and the handheld device number of the door squeezing force uploaded by the handheld device 301, and also includes the region, the subway line, the train number, the door number information, the measurement time, and the operator information input on the smart phone APP. On one hand, the APP interface of the smart phone can display the measurement information, and the data packet can be stored locally, so that the historical measurement result can be conveniently inquired in the smart phone; on the other hand, the smart phone can send the data packet to the background server 102 through its own wireless network (3G/4G/5G). The communication protocol between the smart phone and the background server 102 is also a private protocol, the protocol is also bidirectional communication, when the background server 102 receives a complete packet of data, two bytes, namely 0x0a and 0x0b, are replied to the smart phone, if the smart phone does not receive reply information of the background server 102 within 1min, the smart phone end continues to transmit for three times, and if the reply information is not received after the three times of transmission, the smart phone end locally stores the data packet measured this time and transmits the data packet together after the next measurement is completed.
As shown in fig. 5, the backend server interface 501 is composed of a query interface 502 and a data presentation interface 503. The background server 102 may receive door squeezing force data measured by a plurality of different handheld devices 301, and the data are sent to the unified background server 102 through different smartphones, and finally displayed on the background server interface 501. After selecting the corresponding area, subway line, train number and door number at the pull-down menu of the query interface 502, clicking the query button will present the corresponding data display interface 503. The data display interface 503 may display the effective value and the maximum value of the pressure measured by the selected door, the time measured by the door pressing force, the operator, and the detected model of the handheld device 301. As shown in the data presentation interface 503 shown in fig. 5, the handheld device numbers in the first handheld device measurement data 504 and the second handheld device measurement data 505 are the same, and the operators are the same, that is, the same person uses the same handheld device to measure at different time periods; handheld device measurement data two 505 and handheld device measurement data three 506 were measured by different people at different time periods using different handheld devices. The background server 102 may also store information uploaded by different smartphones for later querying. The background server 102 can check the historical change condition of a certain vehicle door extrusion pressure value at any time, so that the change condition of the vehicle door extrusion pressure can be conveniently mastered in real time, the vehicle door can be regularly checked, and the accident that passengers are injured by clamping is prevented.
As shown in fig. 6, the measuring method of the present invention is:
during measurement, firstly, the Bluetooth of the handheld device and the Bluetooth of the smart phone are opened, the handheld device establishes connection with the smart phone by utilizing the Bluetooth of the handheld device, and the measurement can be started only after the connection is established.
The shell of the handheld device is internally provided with a pressure sensor, the handheld device is placed in the middle of two door leaves, the pressure sensor placed in the middle can be extruded when the door is normally closed, the pressure sensor is not in direct contact with the two door leaves, the door leaves extrude a spring arranged on the handheld device, and the spring indirectly transmits the extrusion force of the door leaves to the pressure sensor; the pressure sensor converts the extrusion force of the door leaf into an electric signal which can be processed by a single chip machine, and a linear curve of the electric signal and the pressure applied is fitted by a least square method, so that the extrusion force of the door leaf is solved.
When measuring, can carry out the switching of single measurement and cubic continuous measurement according to the measuring mode of needs, when switching, handheld device can send the zone bit of switching for smart mobile phone APP through the bluetooth, and smart mobile phone APP discerns the received zone bit and judges whether show single measuring interface or cubic continuous measurement's interface. When the handheld device is switched, the interface of the liquid crystal display screen of the handheld device and the interface of the smart phone APP are also synchronously switched. The Bluetooth transmission adopts a bidirectional communication mode, when the handheld device sends the zone bit of the switching interface to the smart phone APP, if the smart phone receives the correct zone bit, the handheld device replies two bytes of 0x01 and 0x02 to the smart phone APP, which indicates that the zone bit is correctly received; if the handheld device does not receive any reply information of the smart phone within 30s, the handheld device will resend the reply information, and if the smart phone still does not reply after the cycle is repeated for three times, the handheld device is disconnected from the smart phone Bluetooth, and the Bluetooth pairing is prompted to be carried out again.
The intelligent mobile phone APP is provided with a login interface, an operator logins the mobile phone APP by using the own account number and password, after login is completed, the electronic tag identification on the car door can be directly identified by using the NFC function of the intelligent mobile phone to obtain the corresponding region, subway line, train number and car door number, when the electronic tag fails, the corresponding region, subway line, train number and car door number can be input at the corresponding interface of the intelligent mobile phone APP in a manual input mode, and measurement is started after input is completed, on one hand, the handheld device can display the maximum value and the effective value of the measured car door extrusion force on the liquid crystal screen of the handheld device in real time, on the other hand, the maximum value, the effective value, the measurement mode and the serial number of the handheld device are transmitted to the intelligent mobile phone APP in a Bluetooth transmission mode, after the intelligent mobile phone receives complete information, two bytes of 0x01 and 0x02 are replied to the handheld device to indicate that the data sent by the handheld device is successfully received, if the handheld device does not receive the information replied by the smart phone within 30s, the handheld device sends the measurement information for three times in a circulating mode, and if the correct reply information is not received after the three times of sending, the handheld device prompts to disconnect the Bluetooth for reconnection.
Claims (9)
1. The utility model provides a door extrusion force measurement system, its characterized in that, is including being used for measuring handheld device (301) of train door extrusion force, handheld device (301) be connected with backend server (102) through the smart mobile phone, handheld device (301) include casing (303), casing (303) bottom is connected with handle (305), the one end of casing (303) is stiff end (304), the other end is removal end (302), stiff end (304) and removal end (302) contact with the door leaf of train door respectively, will record the door pressure value show on casing (303), send backend server (102) through the smart mobile phone with data simultaneously on.
2. The system for measuring the extrusion force of the vehicle door as claimed in claim 1, wherein the hardware of the handheld device (301) comprises a data acquisition circuit (202), a data processing circuit (208), a key switching circuit (212), a bluetooth transmission circuit (213), a liquid crystal display circuit (214) and a power supply circuit (204), all the circuits are powered by the power supply circuit (204), the input end of the data processing circuit (208) is connected with the data acquisition circuit (202), and the output end of the data processing circuit is connected with the key switching circuit (212), the bluetooth transmission circuit (213) and the liquid crystal display circuit (214).
3. A door squeeze force measuring system according to claim 2, characterized in that the data acquisition circuit (202) employs a pressure sensor circuit (203).
4. The system for measuring the squeezing force of the vehicle door as claimed in claim 2, wherein the key switching circuit (212) can switch the interface of the liquid crystal display circuit (214) between a single measurement and a plurality of consecutive measurements.
5. The system for measuring the squeezing force of the vehicle door as claimed in claim 2, wherein the liquid crystal display circuit (214) and the APP interface of the smart phone are switched synchronously.
6. The system for measuring the squeezing force of the vehicle door as claimed in claim 1, wherein the handheld device (301) is connected with the smart phone through a Bluetooth transmission circuit (213).
7. The system for measuring the squeezing force of the vehicle door as claimed in claim 1, wherein the smart phone sends data to the background server (102) through a wireless network.
8. The system for measuring the squeezing force of the vehicle door as claimed in claim 1, wherein the background server (102) is provided with an inquiry interface (502) and a data display interface (503).
9. A door squeeze force measuring system according to claim 1, characterized in that a liquid crystal screen is provided on the housing (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486113.8U CN211720746U (en) | 2020-04-03 | 2020-04-03 | Car door extrusion force measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020486113.8U CN211720746U (en) | 2020-04-03 | 2020-04-03 | Car door extrusion force measuring system |
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| Publication Number | Publication Date |
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| CN211720746U true CN211720746U (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020486113.8U Active CN211720746U (en) | 2020-04-03 | 2020-04-03 | Car door extrusion force measuring system |
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| CN (1) | CN211720746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356111A (en) * | 2020-04-03 | 2020-06-30 | 南京康尼机电股份有限公司 | System and method for measuring extrusion force of vehicle door |
-
2020
- 2020-04-03 CN CN202020486113.8U patent/CN211720746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356111A (en) * | 2020-04-03 | 2020-06-30 | 南京康尼机电股份有限公司 | System and method for measuring extrusion force of vehicle door |
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