CN205304869U

CN205304869U - Vehicle -mounted signal collector

Info

Publication number: CN205304869U
Application number: CN201521087870.3U
Authority: CN
Inventors: 张权; 唐世伟; 潘晓林
Original assignee: Chongqing Aobin Science And Technology Co Ltd
Current assignee: Chongqing Aobin Science And Technology Co Ltd
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2016-06-08
Anticipated expiration: 2025-12-23

Abstract

The utility model discloses a gather the vehicle -mounted signal collection system of vehicle duty parameter in real time, the purpose provides one kind can simplify wiring structure, improves signal transmission's reliability, can carry out the vehicle -mounted signal collector of GPS location simultaneously, including the host computer, the host computer has main singlechip through RS -232 serial port connection, main singlechip is connected with the GPS module, still follow singlechip from singlechip, second from singlechip and third including being used for handling the first of pulse signal, switching value signal and analog signal respectively, each adopts total linear structure or star type structure to carry out the internet access from singlechip and main singlechip, each communication interface who follows on singlechip and the main singlechip all adopts the RS -485 serial ports. The utility model provides a vehicle -mounted signal collector combines RS -232 short -range communication and remote communication of RS -485 and GPS location finding technique, and wiring structure is simple, and data transmission is reliable, and interference immunity is strong, can fuse the GPS signal and carry out navigational positioning.

Description

A kind of cab signal harvester

Technical field

This utility model belongs to automobile instrument field, is specifically related to a kind of apparatus for capturing vehicle mounted signal for Real-time Collection vehicle working condition parameter.

Background technology

On-vehicle information harvester is by various sensor acquisition vehicle working condition parameters: such as the analogue signal such as temperature outside water temperature, oil temperature, parking stall; Vehicle door status, turn to the switching value information such as instruction; Speed, engine speed isopulse signal. At present, many by point-to-point transmission data between sensor and host computer so that wire structures is complicated, and signal transmission is easily subject to interference. On-vehicle information harvester of the prior art does not have positioning function so that can not duty parameter and gps signal be shown on host computer, it is necessary to switching over, it is convenient not to use simultaneously.

Utility model content

The purpose of this utility model is to provide a kind of cab signal harvester, it is possible to simplify wire structures, improves the reliability of signal transmission, can carry out GPS location simultaneously.

For achieving the above object, this utility model be the technical scheme is that a kind of cab signal harvester, and including host computer, described host computer is connected to host scm by RS-232 serial ports, and described host scm is connected to GPS module; Also include being respectively used to process pulse signal, on-off model and analogue signal first from single-chip microcomputer, second from single-chip microcomputer and the 3rd from single-chip microcomputer; Described each adopting bus type structure or hub-and-spoke configuration to carry out network and be connected from single-chip microcomputer with host scm, described each communication interface from single-chip microcomputer and host scm all adopts RS-485 serial ports.

This utility model has the advantages that host computer is connected to host scm by RS-232 serial ports, realize point-to-point short-range communication, owing to RS-232 is full-duplex communication, make can carry out between host computer and host scm transmission and the reception of data simultaneously, improve data transmission efficiency; Host scm is connected to GPS module, can be added by gps signal and be sent simultaneously to host computer in floor data so that user can check location information when checking duty parameter, it is not necessary to be switched to GPS function, convenient use;Each communication interface from single-chip microcomputer and host scm all adopts RS-485 serial ports, it is achieved that point-to-points telecommunication, and RS-485 data transmission bauds is fast, and capacity of resisting disturbance is strong, greatly simplify wire structures.

Accompanying drawing explanation

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the structural representation of embodiment 2.

Detailed description of the invention

Embodiment 1

As shown in Figure 1, a kind of cab signal harvester, including host computer 1, described host computer 1 is connected to host scm 2 by RS-232 serial ports, described host scm 2 is connected to GPS module 3, is sent simultaneously to host computer 1 thus can be incorporated by gps signal so that user can check location information when checking duty parameter in floor data, without being switched to GPS function, convenient use. Adopting TTL interface to communicate between described GPS module 3 and host scm 1, transmission speed is fast, low in energy consumption. Described host computer 1 is wirelessly connected with smart mobile phone 4 by Bluetooth chip 11, facilitates the data in host computer 1 to be transferred on smart mobile phone 4 and checks, and can pass through smart mobile phone 4 and carry out uploading of data; Also include being respectively used to process pulse signal, on-off model and analogue signal first from single-chip microcomputer 21, second from single-chip microcomputer 22 and the 3rd from single-chip microcomputer 23: described pulse signal passes sequentially through photo-coupler 5, trigger 6, frequency divider 7 and inputs first after processing again in single-chip microcomputer 21, input signal and output signal can be played buffer action by photo-coupler 5, it is to avoid the interference to input signal of the output signal; Trigger 6 pulse signals can carry out shaping and obtain square wave; Frequency divider 7 pulse signals carries out the interference dividing to reduce between signal. Described on-off model inputs second in single-chip microcomputer 22 after being processed by photo-coupler 5 again; Described analogue signal passes sequentially through after amplifier 8, wave filter 9 and ADC10 process and inputs the 3rd again in monolithic 23 machine, analogue signal is amplified by amplifier 8, noise in wave filter 9 energy filtering analog signal, ADC10 can convert analog signals into digital signal. Described respectively adopt bus type structure to carry out network from single-chip microcomputer with host scm 2 to be connected, bus structures can at utmost simplify wire structures, described each communication interface from single-chip microcomputer and host scm 2 all adopts RS-485 serial ports, and data transmission bauds is fast, and capacity of resisting disturbance is strong.

Embodiment 2

As in figure 2 it is shown, with embodiment 1 institute the difference is that, respectively adopt hub-and-spoke configuration to carry out network from single-chip microcomputer with host scm 2 and be connected, described hub-and-spoke configuration adopts 485 hubs 24 as the central node of network. The data transmission bauds of hub-and-spoke configuration is fast, and point spread is convenient, safeguards easily, one from single-chip microcomputer fault without influence on other from the connection of single-chip microcomputer. The fault network segment can be isolated by 485 hubs 24, to ensure the normal operation of other network segments, improves the reliability of network transmission.

Cab signal harvester provided by the utility model, combines RS-232 short-range communication with RS-485 telecommunication and GPS location technology, and wire structures is simple, and data transmission is reliable, strong interference immunity, it is possible to merges gps signal and is navigated location.

Claims

1. a cab signal harvester, including host computer, it is characterised in that: described host computer is connected to host scm by RS-232 serial ports, and described host scm is connected to GPS module; Also include being respectively used to process pulse signal, on-off model and analogue signal first from single-chip microcomputer, second from single-chip microcomputer and the 3rd from single-chip microcomputer;Described each adopting bus type structure or hub-and-spoke configuration to carry out network and be connected from single-chip microcomputer with host scm, described each communication interface from single-chip microcomputer and host scm all adopts RS-485 serial ports.

2. cab signal harvester according to claim 1, it is characterised in that described in: described hub-and-spoke configuration adopt 485 hubs as the central node of network.

3. cab signal harvester according to claim 1, it is characterised in that described in: adopt TTL interface to communicate between described GPS module and host scm.

4. cab signal harvester according to claim 1, it is characterised in that described in: described host computer is wirelessly connected with smart mobile phone by Bluetooth chip.

5. cab signal harvester according to claim 1, it is characterised in that described in: described pulse signal inputs first in single-chip microcomputer after passing sequentially through photo-coupler, trigger, frequency divider process again.

6. cab signal harvester according to claim 1, it is characterised in that described in: described on-off model inputs second again in single-chip microcomputer after being processed by photo-coupler.

7. cab signal harvester according to claim 1, it is characterised in that described in: described analogue signal passes sequentially through after amplifier, wave filter and ADC process and inputs the 3rd again in single-chip microcomputer.