CN201532263U

CN201532263U - Multi-path temperature collector

Info

Publication number: CN201532263U
Application number: CN2009201970936U
Authority: CN
Inventors: 李超
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-16
Filing date: 2009-09-16
Publication date: 2010-07-21
Anticipated expiration: 2019-09-16

Abstract

The utility model provides a multi-path temperature collector which comprises temperature sensors, an analog signal collecting and switching module, a master control module and a display module, wherein all the temperature sensors are connected with the analog signal collecting and switching module; the analog signal collecting and switching module, the master control module and the display module are sequentially connected with one another; and as the analog signal collecting and switching module is controlled by the master control module, temperature collection and display can be carried out on the plurality of paths of temperature sensors. Therefore, the integration level of equipment can be improved, and the equipment cost is reduced.

Description

The multiplex temperature collection device

Technical field:

The utility model relates to a kind of collecting device, especially a kind of multiplex temperature collection device.

Background technology:

In the industrial circle, temperature acquisition equipment is the equipment of using always, traditional temperature acquisition equipment can only be gathered and shows the temperature of certain point, if the collection that a plurality of points in zone are carried out temperature then needs to use a plurality of equipment, this has caused the rising of cost, and the increase of the workload of equipment control and maintenance.

Summary of the invention:

For overcoming the shortcoming of conventional temperature collecting device, the utility model provides a kind of multiplex temperature collection device.

The utility model comprises temperature sensor, collection of simulant signal handover module, main control module, display module, each temperature sensor all is connected with the collection of simulant signal handover module, collection of simulant signal handover module, main control module, display module connects successively, can carry out temperature acquisition and demonstration by main control module to the multi way temperature sensor to the control of collection of simulant signal handover module.

The beneficial effects of the utility model are, have improved the integrated level of equipment, have reduced the cost of equipment, have higher utility.

Description of drawings:

Fig. 1 is a schematic diagram of the present utility model, and Fig. 2 is the utility model electricity structural drawing.

Embodiment:

As shown in Figure 1, the utility model comprises temperature sensor 1, collection of simulant signal handover module 2, main control module 3, display module 4, it is characterized in that, each temperature sensor 1 all switches with collection of simulant signal that 2 of moulds are connected, collection of simulant signal handover module 2, main control module 3, display module 4 connects successively, can carry out temperature acquisition and demonstration to multi way temperature sensor 1 by the control of 3 pairs of collection of simulant signal handover modules 2 of main control module.

As shown in Figure 2 for the K type thermocouple signal of guaranteeing each road can timesharing send in the A/D conversion chip, must between them, insert multicircuit switch, finish many to one conversion.CD4051 is single-ended 8 passage multi-way switchs, and it is with 3 channel selecting input end A, B, C and one to forbid input end INH.The signal that A, B, C obtain is used for selecting one of 8 passages to be switched on.INH=" 1 ", promptly during INH=VDD, all passages all disconnect, and forbid the analog quantity input; When INH=" 0 ", promptly during INH=VSS, passage is connected, and allows the analog quantity input.The scope of input signal Vi is VDD～VSS.So the user can be according to input reference signal and the logic level of the digital controlled signal magnitude of voltage of selecting VDD, VSS, VEE of oneself.

Analog switch amount CD4051 switches a plurality of thermocouple temperature sensors respectively, chooses the temperature sensor measurement circuit of passage 0 to passage 7 by the Single-chip Controlling order, sends into A/D converter ICL7135 after amplifying.After the single-chip microcomputer 89C52 image data, after school zero, filtering, thermopair reference end compensating and linearization process, be converted to corresponding temperature digital amount and in display module, show relevant temperature.

An analog switch amount CD4051 can realize the collection of 8 tunnel temperature string sense data.

Claims

1. multiplex temperature collection device, comprise temperature sensor (1), collection of simulant signal handover module (2), main control module (3), display module (4), it is characterized in that, each temperature sensor (1) all is connected with collection of simulant signal handover module (2), collection of simulant signal handover module (2), main control module (3), and display module (4) connects successively.