CN101718778B - Remote fault diagnosis method and system for alcohol tester based on GPRS - Google Patents

Abstract

The invention discloses a method and system for remote fault diagnosis of an alcohol tester based on GPRS. The CPU module in the alcohol tester is connected to the SIM card through the GPRS module, and the GPRS module is connected to the antenna. Through the fault self-inspection program of the tester, check the working status of each module in the tester, and then transmit the inspection result of the fault self-inspection program to the monitoring center of the tester manufacturer through the GPRS communication module, and know the working status of the tester according to the inspection result , to troubleshoot. The monitoring center has a good human-machine interface, which can directly reflect the working status information of the tester-related equipment, and realizes the monitoring of the remote alcohol tester well. At the same time, it conducts statistical analysis on the received tester equipment status information and applies it to the future service plan system . The tester also has the function of GPS positioning. It can locate the tester at the service point through positioning satellites, and provide telephone or door-to-door service for faults that cannot be repaired remotely.

Description

Alcohol tester remote fault diagnosis method and system based on GPRS

technical field

The invention relates to a method and a system for remote fault diagnosis of an alcohol tester, in particular to a method and a system for a remote fault diagnosis of an alcohol tester based on GPRS.

Background technique

At present, frequent traffic accidents caused by drunk driving have caused great harm to the safety of people's lives and property. Using an alcohol tester to detect whether a driver is drunk and driving can effectively control the driver's drunk driving, which is also after a traffic accident. One of the important measures of investigation and evidence collection. However, because the alcohol tester often breaks down due to various reasons during use, and as the use time increases, its stability and test accuracy become worse and worse, it is often necessary to send the alcohol tester to the production of the alcohol tester Manufacturers perform calibration, a process that often wastes a lot of time and money. At present, the alcohol tester does not have the function of fault self-diagnosis, nor does it have the function of remote diagnosis.

Contents of the invention

Aiming at the above-mentioned present situation and technical gap, the object of the present invention is to provide a method and system for remote fault diagnosis of alcohol tester based on GPRS. The alcohol tester can accurately detect whether the components of the alcohol tester are working normally through the built-in fault diagnosis program, and can send the fault information of the alcohol tester to the manufacturer's remote monitoring system of the alcohol tester through the GPRS information transmission module. The manufacturer's after-sales service personnel carry out fault diagnosis and repair service support according to the fault information.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

One, a kind of remote fault diagnosis method of alcohol tester based on GPRS:

When the alcohol tester with fault self-diagnosis program and GPRS communication module is turned on or enters the self-diagnosis mode, the alcohol tester modules: CPU module, fuel cell sensor module, power module, GPRS module, temperature detection and control module and The RF module checks whether it is in the normal working state, and the result after the check is sent to the CPU module, which is sent to the GPRS module, and can be sent to the GPRS network and Internet network through the SIM card and the antenna, and sent to the remote monitoring center through the firewall. The communication server stores the information of the module in the database server, and the man-machine interface provides a query interface, and the after-sales service personnel can query the equipment failure information of the remote alcohol tester.

2. One is a GPRS-based alcohol testing system with self-diagnosis function:

Including CPU module, exhaust device, air pump device, air suction device, fuel cell sensor module, information preprocessing module, power module, GPS, temperature detection and control module, storage module, reset module, indication alarm module, LCD display module, Alcohol tester composed of speaker module, RF module, pressure detection module and USB interface. The CPU module in the alcohol tester is also connected to the SIM card through the GPRS module, and the GPRS module is connected to the antenna.

Described GPRS module adopts the MC55 module of Siemens Company, and TXD is RS232 input, connects the ISPTX pin of CPU module, and the ISPTX pin of CPU module is used for output data, and TXD of GPRS module is used for receiving data RXD is RS232 output, connects CPU The ISPRX of the module, the ISPRX of the CPU module is used to receive data, and the RXD of the GPRS module is used to output data; GND is grounded, VCC power input; LEDGP is used to connect signal lights; PWEN is used to control power off and reset GPRS; SIMVCC and SIM card VSIM Connected to supply power to the SIM card, generally using 3V; SIMDAA is connected to the SIM card SIM-IO to transmit data; SIMCLK is connected to the SIM card SIM-CLK to indicate the SIM clock; SIMRST is connected to the SIM card SIM-RESET to use To reset; SIMGND is connected to the SIM card SIM-GND, which is the negative terminal of the SIM card power supply; GNC is not connected.

The main tasks of the system are: the acquisition of alcohol concentration signals; the examiner’s oral gas passes through the inhalation device, and then is pumped into the fuel cell sensor module by the air pump device Corresponding electrical signals are obtained through the information preprocessing module and sent to the CPU module for processing; signal remote transmission device: the CPU module adopts NXP LPC2378, the operating system in the chip adopts WinCE5.0 embedded system, and the network protocol adopts TCP/ IP protocol; the fault self-diagnosis program detects the information of the main module of the alcohol tester and transmits it to the GPRS module. This module adopts the MC55 module of Siemens Company and accesses the public GPRS network through the corresponding SIM card and antenna. The SIM card adopts a mobile SIM card; other important modules are selected: the power module adopts the ES series Back-UPS BE525 GPRS module of APC UPS, which adopts the MC55 module of Siemens Company; the GPS module adopts the TU-30 GPS module of Rockwell Company of the United States; the temperature detection and control module The core component is LM607MH; the storage module adopts large-capacity NAND Flash K9K4G08U0M-YCBO; the serial interface adopts RS232 interface; the LCD display module adopts a 7-inch TFT liquid crystal display touch screen with a resolution of 800×600; the RF module adopts NRF2401 chip .

The beneficial effects that the present invention has are:

1. Alcohol tester: with a fault self-diagnosis program, this program can check the CPU module, power supply module, LCD module, fuel cell sensor module, radio frequency circuit module and button module of the alcohol tester when the alcohol tester is turned on. Quick inspection; Adopt high-speed and stable GPRS communication module, which can quickly transmit the diagnosis results of the fault self-diagnosis program; Adopt LCD touch screen to make the operation easier and faster; It has a powerful GPS receiver and built-in antenna, which is convenient for positioning management.

2. Remote monitoring center: man-machine interface, easy to operate, using a stable and reliable database system.

3. The GPRS-based alcohol tester fault remote diagnosis system can realize the alcohol tester's operating conditions and equipment status information to be transmitted to the remote monitoring center through the GPRS communication module in a cheap, fast and reliable manner, so that manufacturers can know the status of the alcohol test in real time Where the fault lies, the alcohol tester is troubleshooted through the remote monitoring center, which greatly reduces the cost of after-sales service and ensures the normal operation of the alcohol tester.

Description of drawings

Figure 1 is a diagram of the remote fault diagnosis and detection system of the alcohol tester based on GPRS.

In the figure: 1 alcohol tester, 2 fault self-checking program, 3 communication module, 4 GPRS network, 5 Internet network, 6 firewall, 7 remote monitoring center, 8 WEB server, 9 communication server, 10 database server, 11 man-machine interface.

Fig. 2 is the structural diagram of the alcohol tester with fault self-diagnosis program and GPRS module in the present invention.

In the figure: 12, CPU module, 13, exhaust device, 14, air pump device, 15, air suction device, 16, fuel cell sensor module, 17, information preprocessing module, 18, power supply module, 19, GPRS module, 20 , SIM card, 21, antenna, 22, GPS, 23, temperature detection and control module, 24, storage module, 25, reset module, 26, indication and alarm module, 27, LCD display module, 28, speaker module, 29, RF Module, 30, pressure detection module, 31, USB interface

Figure 3 is a flow chart of the fault self-diagnosis program detecting faults.

Fig. 4 is a circuit diagram of GPRS module and SIM card.

Figure 5 is the workflow of the GPRS module software.

Fig. 6 is an interface circuit diagram of the CPU module.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.

Referring to Fig. 1, Fig. 2 and Fig. 3, the process of remote fault diagnosis of alcohol tester with fault self-diagnosis program and GPRS module is explained. Fig. 1 includes alcohol tester 1 with fault self-diagnosis program 2 and GPRS module 3 And as a server remote monitoring center 7; when performing the breath alcohol content test, the subject first holds the mouth of the exhalation pipe with his mouth, blows air evenly and continuously for 6-10 seconds, and blows air when "stop" is displayed on the screen Sampling is successful, otherwise re-sampling is required. After the exhalation is successful, the exhaled sample of the subject first enters the fuel cell sensor module 16 through the inhalation device 15, and the obtained electrical signal enters the information preprocessing module 17, and after being amplified, it is converted into a digital signal by A/D and enters the CPU module. 12. The CPU module 12 displays real-time test results on the screen of the LCD display module 27 through information calculation. Wherein fault self-diagnosis program 2 can be to the main module of alcohol tester when alcohol tester 1 starts up or enters self-diagnosis mode: CPU module 12, fuel cell sensor module 16, power supply module 18, GPRS module 19, temperature detection and Control module 23, RF module 29, carry out quick inspection, the flow process of inspection is referring to Fig. 3, and the result after inspection is passed to CPU module 12, is passed to GPRS module 19 by CPU module 12, and GPRS module 19 adopts the MC55 module of Siemens company, can Fast pass through SIM card 21, antenna 22 passes to GPRS network 4 and Internet network 5, passes to communication server 9 in the remote monitoring center 7 by firewall 6, stores the information of equipment in database server 10, man-machine interface 11 provides good In the query interface, after-sales service personnel can query the equipment failure information of the remote alcohol tester, and the main function of the WEB server 8 is to provide online information browsing service. In addition, the infrared alcohol tester node has a GPS positioning function, which can locate and query the position of the alcohol tester through positioning satellites, which is convenient for after-sales service personnel to provide timely door-to-door service or telephone service;

With reference to Fig. 4, Fig. 5 and Fig. 6, Fig. 4 is GPRS module 19 and SIM card 20 circuit diagrams, GPRS module 19 mainly adopts the MC55 module of Siemens Company, among the figure TXD is RS232 input, connects the ISPTX pin of CPU module 12, CPU module The ISPTX pin of 12 is used for outputting data, and the TXD of GPRS module 19 is used for receiving data; RXD is RS232 output, connects the ISPRX of CPU module 12 in Fig. 6, and the ISPRX of CPU module 12 is used for receiving data, and GPRS module 19 RXD is used to output data; GND is grounded, VCC is power input; LEDGP is used to connect signal lights; PWEN is used to control power off and reset GPRS; SIMVCC is connected to SIM card VSIM, and power is used for SIM card, generally using 3V; SIMDAA and SIM card SIM -IO is connected to transmit data; SIMCLK is connected to the SIM card SIM-CLK to indicate the SIM clock; SIMRST is connected to the SIM card SIM-RESET to reset; SIMGND is connected to the SIM card SIM-GND to supply power for the SIM card Negative Terminal; GNC No Connect. Fig. 5 is mainly used to represent the data transmission process between GPRS module 19 and CPC module 12, and the instruction of transmission is mainly AT instruction, and AT instruction is mainly sent and received in the figure, and the whole process is divided into sending, receiving, interruption, First send, turn off all interrupts, call data sending, if all the data is transmitted, develop all interrupts, start receiving, judge whether all the sent data is sent, clear the receiving interrupt flag after sending, and receive data, if the received data is received , the receiving process ends.

Claims (3)

1. alcohol tester remote fault diagnosis method based on GPRS is characterized in that the step of this method is following: comprise the alcohol tester (1) that has fault self-checking program (2) and GPRS communication module (3), when start or get under the self diagnostic mode can be to the alcohol tester module: CPU module (12); Fuel cell sensor assembly (16); Whether power module (18), GPRS module (19), temperature detection and control module (23) and RF module (29) are checked in normal operating conditions; Result after the inspection passes to CPU module (12); Pass to GPRS module (19) by CPU module (12), can pass through SIM (20), antenna (21) is passed to GPRS network (4) and Internet net (5); Pass to the communication server (9) in the remote monitoring center (7) through fire wall (6); Leave the information of module in database server (10), man-machine interface (11) provides query interface, and the after sale service personnel can inquire about the device fault information of long-range alcohol tester.

2. according to a kind of alcohol tester remote failure diagnosis system of the said method of claim 1, comprise CPU module (12), exhaust apparatus (13), air pump device (14) based on GPRS; Getter device (15), fuel cell sensor assembly (16), information pre-processing module (17), power module (18); GPS (22), temperature detection and control module (23), memory module (24); Reseting module (25), indication alarm module (26), LCD display module (27); Loudspeaker module (28), RF module (29), the alcohol tester (1) that pressure detection module (30) and USB interface (31) constitute; It is characterized in that: the CPU module (12) in the alcohol tester (1) also is connected with SIM (20) through GPRS module (19), and GPRS module (19) connects antenna (21).

3. a kind of alcohol tester remote failure diagnosis system according to claim 2 based on GPRS; It is characterized in that: described GPRS module (19) adopts the MC55 module of Siemens company; TXD is the RS232 input; The ISPTX pin that connects CPU module (12), the ISPTX pin of CPU module (12) are used for output data, and the TXD of GPRS module (19) is used for receiving data; RXD is RS232 output, connects the ISPRX of CPU module (12), and the ISPRX of CPU module (12) is used for receiving data, and the RXD of GPRS module (19) is used for output data; GND ground connection, the input of VCC power supply; LEDGP is used for connecing signal lamp; PWEN is used for controlling powered-down, and GPRS resets; SIMVCC links to each other with SIM (20) VSIM, gives SIM (20) power supply, and voltage is 3V; SIMDAA links to each other with SIM (20) SIM-IO, is used for transmitting data; SIMCLK links to each other with SIM (20) SIM-CLK, is used for representing the SIM clock; SIMRST links to each other with SIM (20) SIM-RESET, is used for resetting; SIMGND links to each other with SIM (20) SIM-GND, is SIM (20) power supply negative terminal.

Images