CN201234268Y

CN201234268Y - Searching and monitoring separation construction for bus monitoring module

Info

Publication number: CN201234268Y
Application number: CNU2008201095009U
Authority: CN
Inventors: 翟延忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-29
Filing date: 2008-07-29
Publication date: 2009-05-06
Anticipated expiration: 2018-07-29

Abstract

The utility model relates to a searching and monitoring separation structure of a one-wire bus monitoring module, which comprises a monitoring module. A singlechip is arranged on the monitoring module; a power supply module supplies power to the singlechip, a communication interface circuit and a one-wire bus interface circuit; the singlechip is also connected with a logic model switch; the one-wire bus interface circuit is connected with at least one one-wire bus; and the logic model switch has a searching model position and a monitoring model position. When in use, the logic model switch is set to be in the searching model position; the system searches the one-wire bus which is connected with the monitoring module after the monitoring module is electrified, and records the searching result in the singlechip; and then the logic model switch is set to be in the monitoring model position, the one-wire bus can be monitored after the monitoring module is electrified. By adopting the searching and monitoring separation structure of the one-wire bus monitoring module, the identification confusion on one-wire device monitoring information caused by different searching results on the one-wire device is avoided, and the monitoring reliability of the one-wire bus is enhanced.

Description

The search of one-wire bus monitoring modular separates structure with monitoring

Technical field,

The utility model relates to a kind of structure of one-wire bus monitoring modular, and the search that relates to a kind of one-wire bus monitoring modular that is used for the one-wire bus monitoring technology further and monitoring operational mode are controlled a kind of structure of one-wire bus respectively.Belong to the one-wire bus monitoring technical field.

Background technology

One-wire bus is meant the bus that a holding wire is only arranged, the one-wire bus technology utilizes this bus can realize being overlapped on the access control of several line devices on this bus, one line device is the device of observing the one-wire bus agreement and realizing certain monitoring function, equal etching had unique 64 binary codes of one group of 8 byte when every one line device dispatched from the factory, in order to sign difference each a line device, i.e. a line device ID sign indicating number.In order to realize the monitoring of one-wire bus, monitoring modular need be carried out a search software, to be informed in the ID sign indicating number that what line devices and every one line device are arranged on the one-wire bus, then by the ID sign indicating number control and the monitoring information of visiting a corresponding line device of monitoring modular, as getting final product the residing ambient temperature of sampler by a line temperature sensor according to every one line device.In the prior art, the one-wire bus monitoring modular all is to adopt the back antecedent searching that powers on, automatically change the mode of monitoring operation then over to, under this pattern, when one-wire bus load behavior condition changes, especially under the heavier situation of load, power at every turn and search for the inconsistent situation that to bear results, this situation that all can cause line number of devices on the one-wire bus and ID sign indicating number to put in order and change takes place, because mostly being to put in order according to a line device ID sign indicating number, monitoring (promptly numbers, numbering can be made amendment by the communication function of module), the monitoring information that will occur some line device like this is taken as the monitoring information of other one line device, thereby cause the falsehood of monitoring information, i.e. so-called " fastening one person's story upon another person ".

The utility model content

The utility model is for overcoming the deficiencies in the prior art, providing a kind of search that is used for the one-wire bus monitoring modular of one-wire bus monitoring technology to separate structure with the search that the monitoring operational mode is controlled a kind of one-wire bus monitoring modular of one-wire bus respectively with monitoring.

The search of one-wire bus monitoring modular of the present utility model separates structure with monitoring technical scheme is achieved in that

The search of one-wire bus monitoring modular of the present utility model separates structure with monitoring, comprise monitoring modular, described monitoring modular is established single-chip microcomputer, under the power module power supply, single-chip microcomputer is connected with communication interface circuit, one-wire bus interface circuit respectively, described single-chip microcomputer also connects a logical schema switch, and described one-wire bus interface circuit is connected with the one-wire bus network.

Described logical schema switch is established search pattern position and monitoring pattern position.

For a metastable one-wire bus monitoring system, the one-wire bus load that it connected always remains unchanged within a certain period of time, the operational mode of monitoring modular is divided into two kinds, be search pattern and monitoring pattern, like this for the one-wire bus load of determining, after once search pattern operation was reliably finished, monitoring modular only needed the operational monitoring pattern later on, thereby thoroughly stopped the situation generation of the monitoring information mistake that causes owing to the temporary transient performance change of one-wire bus load.

Textural at monitoring modular for this reason, a logical schema switch is set, two kinds of logic states are represented in the connecting and disconnecting of logical schema switch in circuit, promptly " 0 " reaches " 1 ", when the logical schema switch was in " 0 ", the expression search pattern was when the logical schema switch is in " 1 ", the expression monitoring pattern, or opposite.At first check the state of logical schema switch when monitoring modular powers on, and determine the operation of monitoring modular according to the state of logical schema switch.

The search of one-wire bus monitoring modular of the present utility model separates structure and has following beneficial effect with respect to prior art with monitoring:

1, the search of one-wire bus monitoring modular of the present utility model separates structure with monitoring, when the one-wire bus load is heavier, the confusion of a line device monitor information Recognition can not occur the difference of a line device Search Results is caused, the reliability of one-wire bus monitoring is improved.

2, the search of one-wire bus monitoring modular of the present utility model separates structure with monitoring, and simple in structure, easy to operate, stable performance, effect are obvious.

Description of drawings

Fig. 1 separates structure annexation schematic diagram for the search of one-wire bus monitoring modular of the present utility model with monitoring.

Embodiment

For can being known, one of ordinary skill in the art understands the technical solution of the utility model, existing in conjunction with the accompanying drawings to the further explanation at large of the utility model do:

A kind of search of one-wire bus monitoring modular separates structure with monitoring, comprise monitoring modular 1, monitoring modular 1 is established single-chip microcomputer, single-chip microcomputer 2 is connected with power module 3, power module 3 is connected with communication interface circuit 4, one-wire bus interface circuit 5 respectively, single-chip microcomputer 2 also connects a logical schema switch 6, and one-wire bus interface circuit 5 is connected with at least one one-wire bus 7.

Logical schema switch 6 is established i.e. i.e. " 1 " position in " 0 " position, monitoring pattern position 62, search pattern position 61 further.

Specific embodiment: with several line temperature sensors of monitoring on the one-wire bus is example, at first logical schema switch 6 is arranged on i.e. " 0 " position, search pattern position 61, after monitoring modular 1 powers on, system's auto-initiation and the automatic state that detects logical schema switch 6, monitoring modular 1 is promptly searched for the one-wire bus 7 that is connected by one-wire bus interface circuit 5, the purpose of search is to determine to have on this one-wire bus 7 how many only line temperature sensors, and the ID sign indicating number of each temperature sensor, after search finishes, Search Results is noted by single-chip microcomputer 2, then logical schema switch 6 is arranged on i.e. " 1 " position, monitoring pattern position 62, power on once more, this moment, monitoring modular 1 just entered the monitoring to each temperature sensor on the one-wire bus.

Claims

1, a kind of search of one-wire bus monitoring modular separates structure with monitoring, comprise monitoring modular, it is characterized in that, described monitoring modular is established single-chip microcomputer, described single-chip microcomputer is connected with power module, described power module also is connected with communication interface circuit, one-wire bus interface circuit respectively, and described single-chip microcomputer is connected with the logical schema switch, and described one-wire bus interface circuit is connected with at least one one-wire bus.

2, the search of one-wire bus network monitoring module according to claim 1 separates structure with monitoring, it is characterized in that, described logical schema switch is established search pattern position and monitoring pattern position.