CN204255518U

CN204255518U - It is a kind of that multiple spot is high-precision adopts warm system

Info

Publication number: CN204255518U
Application number: CN201420657270.5U
Authority: CN
Inventors: 梁思灵; 李楠; 陈亮
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2014-11-05
Filing date: 2014-11-05
Publication date: 2015-04-08
Anticipated expiration: 2024-11-05

Abstract

The utility model discloses that a kind of multiple spot is high-precision adopts warm system, comprise single-chip microcomputer, the RS232 wireless module be connected with single-chip microcomputer, timing delivery module, reset circuit module, LCD MODULE and power module, and plural temperature sensor; Above-mentioned single-chip microcomputer is STC12C5A6052, and described temperature sensor is DSl8B20 and is connected on same bus; The power port ground connection of described DSl8B20, is connected with resistance between FPDP and power port, or by MOSFET and pull-up resistor, bus is received VCC port.The utility model has the features such as image data is accurate, workable, can accurate measuring tempeature rapidly.

Description

It is a kind of that multiple spot is high-precision adopts warm system

Technical field

The utility model belongs to adopts warm device, and especially a kind of multiple spot is high-precision adopts warm system.

Background technology

Temperature is the most basic a kind of environmental parameter, independently adopts warm system and has been widely used in many fields.Traditional adopts warm system, is sensor greatly mainly with thermistor, measures accuracy rate low, and could must be processed by microprocessor through A/D translated data.In the process, the switching in lead-in wire error compensation, power supply disturbance, multimetering and signal conditioning circuit etc. all may cause the appearance of error.

But along with industrial expansion, in scientific experimentation and production run, people promote thermometric accuracy requirement and stability requirement, and traditional adopts the needs that warm system can not meet people.

Utility model content

Utility model object: provide that a kind of multiple spot is high-precision adopts warm system, to solve the problems referred to above of prior art.

Technical scheme: a kind of multiple spot is high-precision adopts warm system, comprises single-chip microcomputer, the RS232 wireless module be connected with single-chip microcomputer, timing delivery module, reset circuit module, LCD MODULE and power module, and plural temperature sensor; Above-mentioned single-chip microcomputer is STC12C5A6052, and described temperature sensor is DSl8B20 and is connected on same bus; The power port ground connection of described DSl8B20, is connected with resistance between FPDP and power port, or by MOSFET and pull-up resistor, bus is received VCC port.

In a further embodiment, described LCD MODULE is the display module adopting TFT liquid crystal display.Described temperature sensor is 3 ~ 8.

Beneficial effect: the utility model has the features such as image data is accurate, workable, can accurate measuring tempeature rapidly.Power supply mode of the present utility model when meeting image data precision, can carry out remote temperature measurement, and circuit structure is more succinct simultaneously.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 a is the circuit diagram of one-chip computer module, and Fig. 2 b is the circuit diagram of display module; Fig. 2 c is the circuit diagram of power module.

Embodiment

As shown in Figure 1, the warm system of adopting that the utility model multiple spot high precision obtains temperature parameter comprises No. 32 temperature sensors 1, and is connected in bus 2, provides enough large working current by a pull-up resistor 3, to ensure the reliability of system works, be finally connected to single-chip microcomputer 4.

Single-chip microcomputer 4 is connected with following five modules respectively: power circuit block, RS232 wireless module, timing delivery module, reset circuit module, LCD MODULE.Power circuit block provides power supply to single-chip microcomputer 4, and RS232 wireless module and timing delivery module can complete data-transformation facility, and reset circuit module carries out initialization to system, and LCD MODULE can accurately show adopts warm data.

The course of work of this embodiment is as follows: adopt parallel way to complete wiring in available space No. 32 temperature sensors; System initialization; Utilize single-chip microcomputer to carry out data acquisition, and read data in LCD display; Measurement data is carried out serial communication by RS232, data is sent on main frame, to carry out next step data analysis

As shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, this embodiment comprises single-chip microcomputer, the RS232 wireless module be connected with single-chip microcomputer, timing delivery module, reset circuit module, LCD MODULE and power module, and plural temperature sensor; Above-mentioned single-chip microcomputer is STC12C5A6052, and described temperature sensor is DSl8B20 and is connected on same bus; The power port ground connection of described DSl8B20, is connected with resistance between FPDP and power port.Power circuit block provides power supply to single-chip microcomputer, and RS232 wireless module and timing delivery module can complete data-transformation facility, and reset circuit module carries out initialization to system, and LCD MODULE can accurately show adopts warm data.

Main frame adopts single-chip microcomputer STC12C5A6052, external No. 32 temperature sensor DS18B20, adopts parasite power mode to power, and LCD liquid crystal display screen employing specification is the TFT liquid crystal display of 240mm*320mm.TFT liquid crystal is that each pixel is provided with a semiconductor switch, and each pixel directly controls by a pulse, and thus each node is relatively independent, and can stepless control, not only accurately can control display level, and reaction velocity is exceedingly fast.

This embodiment only needs an I/O mouth can realize data communication with for processor, and in both-way communication process, does not need additional A/D change-over circuit.Multiple DS18B20 can be connected in a bus and realize communication, can realize the function that multiple spot adopts temperature.DS18B20 has a unique sequence number in ROM, and thus CPU is by simple communication protocol with regard to identifiable design, thus saves a large amount of lead-in wires and logical circuit.Therefore, DS18B20 is specially adapted to remote multiple spot and adopts warm system.

In addition, the concrete arrangement mode of temperature measuring point in temperature field can be determined according to actual conditions, adopt parallel way, in available space, complete the wiring of No. 32 temperature sensors.1-wire digital temperature sensor DSl8B20 has unique one wire system feature, only needs an I/O mouth can realize data communication with for processor, and multiple DS18B20 can be connected in a bus and realize communication, can realize the function that multiple spot high precision adopts temperature.

After tested, the power supply mode in above-described embodiment, can provide enough energy, and to ensure conversion and the conversion accuracy of temperature, this temp measuring system working stability is reliable, and antijamming capability is strong, therefore can develop reliable and stable multipoint temperature monitoring system.In addition, the advantage of above-mentioned parasitic power supply mode also comprises: when carrying out remote temperature measurement, without the need to local power supply; ROM can be read under the condition not having normal power supplies; Circuit is more succinct, only with the existing thermometric of an I/O cause for gossip.The utility model not only can improve DATA REASONING precision, transmit data in real time, and with low cost, simple to operate.

Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple equivalents to the technical solution of the utility model, these equivalents all belong to protection domain of the present utility model.

It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.

In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims

1. multiple spot is high-precision adopts a warm system, it is characterized in that, comprises single-chip microcomputer, the RS232 wireless module be connected with single-chip microcomputer, timing delivery module, reset circuit module, LCD MODULE and power module, and plural temperature sensor; Above-mentioned single-chip microcomputer is STC12C5A6052, and described temperature sensor is DSl8B20 and is connected on same bus; The power port ground connection of described DSl8B20, is connected with resistance between FPDP and power port, or by MOSFET and pull-up resistor, bus is received VCC port.

2. multiple spot is high-precision as claimed in claim 1 adopts warm system, and it is characterized in that, described LCD MODULE is the display module adopting TFT liquid crystal display.

3. multiple spot is high-precision as claimed in claim 1 adopts warm system, and it is characterized in that, described temperature sensor is 3 ~ 8.