CN204854995U - Low -power consumption voice broadcast multi -functional electronic thermometer - Google Patents

Abstract

The utility model relates to a low -power consumption pronunciation multi -functional electronic thermometer, its structure are connected to form by parts such as digital temperature detection circuit, system's level singlechip, single bond switching on and shutting down circuit, LCD circuit, pronunciation newspaper temperature circuit and power supply circuit. The utility model overcomes mercury thermometer reading difficulty, the poor shortcoming of easy broken and simple and easy electron temperature meter measurement accuracy, it is perfect to have the function, and the performance is stable, and small in size, light weight, power dissipation is reduced, price low grade characteristics, can accurate convenient temperature taking and food temperature, also can be used to the inside and outside temperature of measuring chamber, the interior temperature of refrigerator etc, has the temperature measurement regularly, battery power detects, battery low power reminds, real -time pronunciation newspaper temperature, real -time being shaded shows, the temperature memory, multiple functions such as automatic shutdown, but the general temperature measurement instrument of a wide application in hospital and family.

Description

Low power consumption voice broadcast Multi-function electronic thermometer

Technical field

The utility model relates to a kind of temperature measuring equipment, specifically a kind of low power consumption voice broadcast Multi-function electronic thermometer.

Background technology

Traditional clinical thermometer is glass mercury (mercury) thermometer, because of its low price, accuracy of reading and being widely used, is still the human body temperature that domestic hospitals and family generally use at present and measures apparatus.But this clinical thermometer has easily broken and fragmentation and produces the potential safety hazard of mercurial poisoning etc. afterwards.European and American countries is just announced to prohibit the use mercury clinical thermometer from last century Mo one after another, regenerates and upgrades to the electronic thermometer of safety and environmental protection.But the defect of the Simple electronic thermometer ubiquity read untrue of mass selling and use in the market, the electric body-temperature measurement mechanism used clinically then has the large and expensive shortcoming of volume.

Utility model content

The purpose of this utility model is just to provide a kind of low power consumption voice broadcast Multi-function electronic thermometer, is forbidden and awkward problem to solve the metering of existing electronic thermometer.

The utility model is achieved in that a kind of low power consumption voice broadcast Multi-function electronic thermometer, comprising:

Digital temperature sensor, is connected with system-level single-chip microcomputer, for detecting subject temperature, and the temperature signal recorded is transformed into digital signal sends system-level single-chip microcomputer to;

System-level single-chip microcomputer, be connected with voice reporting temperature circuit respectively at the dynamo-electric road of one-key switch, described digital temperature sensor, LCD circuit, for to receive to digital temperature information carry out Segmented temperature compensation correct after liquor charging crystal display show in real time, while sending voice report temperature circuit carry out the report of real-time voice temperature;

The dynamo-electric road of one-key switch, is connected with described system-level single-chip microcomputer, for controlling the break-make of power supply according to switch motion or on time;

LCD circuit, is connected with described system-level single-chip microcomputer, for displays temperature measurement result;

Voice reporting temperature circuit, is connected with described system-level single-chip microcomputer, for voice broadcast temperature measurement result; And

Power circuit, connects with described system-level single-chip microcomputer, by described system-level single-chip microcomputer for each part mentioned above provides operating voltage;

Described system-level single-chip microcomputer U1 adopts STC15F2k32S2 single-chip microcomputer;

Described digital temperature sensor U2 adopts DS18B20 integrated chip, have 3 pins, its 1 pin ground connection, 2 pin of its 2 pin welding system level single-chip microcomputer U1, its 3 pin connects 1 pin of described system-level single-chip microcomputer U1, between 1 pin and 2 pin of described digital temperature sensor U2, be connected to resistance R1;

Described LCD circuit U3 has 5 pins, its 1 pin ground connection, its 2 pin is connected to 8 pin of described system-level single-chip microcomputer U1, its 3 pin is connected to 7 pin of described system-level single-chip microcomputer U1, its 4 pin is connected to 6 pin of described system-level single-chip microcomputer U1, its 5 pin is connected to 5 pin of described system-level single-chip microcomputer U1, between 5 pin and 4 pin of described LCD circuit U3, be connected to resistance R2; Resistance R3 is connected between 5 pin and 3 pin of described LCD circuit U3;

The dynamo-electric road of described one-key switch comprises S1, S2 and S3 tri-keyswitches, between 18 pin that keyswitch S1 is connected to described system-level single-chip microcomputer U1 and ground wire, between 21 pin that keyswitch S2 is connected to described system-level single-chip microcomputer U1 and ground wire, between 22 pin that keyswitch S3 is connected to described system-level single-chip microcomputer U1 and ground wire;

26 pin of described voice reporting temperature circuit U 4 and described system-level single-chip microcomputer U1,27 pin and 28 pin connect.

The utility model adopts digital temperature sensor human body or object temperature, and digitized temperature signal is reached system-level single-chip microcomputer, after the temperature compensation and correction process of system-level single-chip microcomputer, namely its temperature value and Measuring Time are shown in real time by LCD circuit, and quote real-time temperature value by voice reporting temperature circuit simultaneously.

The utility model adopts digital temperature sensor to obtain temperature signal, and collection input, amplification, A/D conversion and one, circuit structure is simple, and stability is high.The utility model self-control thermostatted water domain system determines the temperature curve of each digital temperature sensor, and according to temperature curve, corresponding temperature compensation correction is carried out to each digital temperature sensor, its measuring error within the scope of 25 ~ 50 DEG C is made to reach less than 0.1 DEG C, thus can Measurement accuracy body temperature.

The utility model is configurable nontoxic food Special temperature measurement probe also, can measure and feed the liquid of infant or the temperature of liquid food, effectively to avoid feeding careless the produced scald of infant.

That the utility model is measured is accurate, simple to operate, be easy to carry and cheap, compared with existing compact temperature meter, not only overcomes mercury thermometer reading difficulty, breakable problem, and also overcomes the shortcoming of Simple electronic thermometer measure low precision.The features such as the utility model has perfect in shape and function, stable performance, volume is little, lightweight, low in energy consumption, price is low, can accurately take temperature and food temperature easily, also can be used for measuring chamber internal and external temperature, ice the temperature inside the box etc., having the several functions such as thermometric timing, battery electric quantity detection, battery low-electricity quantity prompting, real-time voice report temperature, in real time backlight display, temperature memory, automatic shutdown, is a kind of general temperature measuring device being widely used in hospital and family.

Accompanying drawing explanation

Fig. 1 is circuit block diagram of the present utility model.

Fig. 2 is the circuit theory diagrams of the utility model embodiment.

Embodiment

As shown in Figure 1, the utility model is connected to form by a few parts such as digital temperature sensor, system-level single-chip microcomputer, the dynamo-electric road of one-key switch, LCD circuit, voice reporting temperature circuit and power circuits.

As shown in Figure 2, wherein, system-level single-chip microcomputer U1, as core devices of the present utility model, adopts STC15F2k32S2 single-chip microcomputer to a kind of physical circuit embodiment of the present utility model.

Digital temperature sensor U2 adopts DS18B20 integrated chip, have 3 pins, its 1 pin ground connection, 2 pin of its 2 pin welding system level single-chip microcomputer U1, its 3 pin connects 1 pin of welding system level single-chip microcomputer U1, between 1 pin and 2 pin of digital temperature sensor U2, be connected to resistance R1.

LCD circuit U3 has 5 pins, its 1 pin ground connection, its 2 pin is connected to 8 pin of system-level single-chip microcomputer U1, its 3 pin is connected to 7 pin of system-level single-chip microcomputer U1, its 4 pin is connected to 6 pin of system-level single-chip microcomputer U1, its 5 pin is connected to 5 pin of system-level single-chip microcomputer U1, between 5 pin and 4 pin of LCD circuit U3, be connected to resistance R2; Resistance R3 is connected between 5 pin and 3 pin of LCD circuit U3.

The dynamo-electric road of one-key switch comprises S1, S2 and S3 tri-keyswitches, between 18 pin that keyswitch S1 is connected to system-level single-chip microcomputer U1 and ground wire, between 21 pin that keyswitch S2 is connected to system-level single-chip microcomputer U1 and ground wire, between 22 pin that keyswitch S3 is connected to system-level single-chip microcomputer U1 and ground wire.26 pin of voice reporting temperature circuit U 4 and system-level single-chip microcomputer U1,27 pin and 28 pin connect; Power circuit BT1 can install 3 joint No. 5 batteries, on 12 pin that the positive and negative electrode of power supply is connected to system-level single-chip microcomputer U1 and 14 pin, for system-level single-chip microcomputer U1 and other working mechanisms provide operating voltage.

Digital temperature sensor U2 is by together with temperature sensing, signal conversion, A/D conversion and the function i ntegration such as heating.System-level single-chip microcomputer U1 is core devices of the present utility model, for completing the several functions such as thermometric timing, battery electric quantity detection, battery low-electricity quantity prompting, real-time voice report temperature, in real time backlight display, temperature memory, automatic shutdown.The compact conformation of system-level single-chip microcomputer U1, volume is little, low price, powerful.

LCD circuit U3 is main viewing area displays temperature, secondary viewing area instruction thermometric time.This display adopt glass-encapsulated, serial communication, with the secondary viewing areas of 3 half and " DEG C " unit display, have backlight function, when push button switch S 1 time, system-level single-chip microcomputer U1 can open the backlight of 6 seconds.Voice reporting temperature circuit U 4 is for real-time broadcasting voice, during the switch S 2 that pushes button, system-level single-chip microcomputer U1 sends voice messaging to voice reporting temperature circuit U 4 by serial data line, and voice reporting temperature circuit U 4 reports voice by the loudspeaker of 32 Ω, and clear sound is loud and clear.

Keyswitch S3 is responsible for the dormancy (power down) of system-level single-chip microcomputer U1 and starts.When system-level single-chip microcomputer U1 is in operation, push button switch S 3, and system-level single-chip microcomputer U1 will dormancy (power down); When system-level single-chip microcomputer U1 is in dormancy (power down), push button switch S 3, and system-level single-chip microcomputer U1 will start, and start can detect battery electric quantity, and electricity is too low, and screen flicker is reported to the police.Last measuring tempeature can be presented on LCD circuit U3 after starting by system-level single-chip microcomputer U1, continues 3 seconds; This temperature survey will be carried out afterwards.Can show the working time that this is measured in the secondary viewing area of LCD circuit U3, main viewing area shows current measuring tempeature value.Reach 300 seconds when running (5 minutes) time, this measures end.Measurement result can show in the secondary viewing area of LCD circuit U3, and voice reporting temperature circuit U 4 is by this temperature value measured of voice broadcast simultaneously.After measurement completes 20 seconds, system-level single-chip microcomputer U1 auto sleep (power down) shutdown.

In system cloud gray model, any moment pushes button switch S 1, will opening display backlight, and this backlight can continue 6 seconds; Any moment pushes button switch S 2, will voice broadcast real time temperature; Backlight and voice broadcast also can carry out simultaneously.

Claims (1)

1. a low-power consumption Multifunctional speech electronic thermometer, is characterized in that, comprising:

Digital temperature sensor, is connected with system-level single-chip microcomputer, for detecting subject temperature, and the temperature signal recorded is transformed into digital signal sends system-level single-chip microcomputer to;

System-level single-chip microcomputer, be connected with voice reporting temperature circuit respectively at the dynamo-electric road of one-key switch, described digital temperature sensor, LCD circuit, for to receive to digital temperature information carry out Segmented temperature compensation correct after liquor charging crystal display show in real time, while sending voice report temperature circuit carry out the report of real-time voice temperature;

The dynamo-electric road of one-key switch, is connected with described system-level single-chip microcomputer, for controlling the break-make of power supply according to switch motion or on time;

LCD circuit, is connected with described system-level single-chip microcomputer, for displays temperature measurement result;

Voice reporting temperature circuit, is connected with described system-level single-chip microcomputer, for voice broadcast temperature measurement result; And

Power circuit, connects with described system-level single-chip microcomputer, by described system-level single-chip microcomputer for each part mentioned above provides operating voltage;

Described system-level single-chip microcomputer U1 adopts STC15F2k32S2 single-chip microcomputer;

Described digital temperature sensor U2 adopts DS18B20 integrated chip, have 3 pins, its 1 pin ground connection, 2 pin of its 2 pin welding system level single-chip microcomputer U1, its 3 pin connects 1 pin of described system-level single-chip microcomputer U1, between 1 pin and 2 pin of described digital temperature sensor U2, be connected to resistance R1;

Described LCD circuit U3 has 5 pins, its 1 pin ground connection, its 2 pin is connected to 8 pin of described system-level single-chip microcomputer U1, its 3 pin is connected to 7 pin of described system-level single-chip microcomputer U1, its 4 pin is connected to 6 pin of described system-level single-chip microcomputer U1, its 5 pin is connected to 5 pin of described system-level single-chip microcomputer U1, between 5 pin and 4 pin of described LCD circuit U3, be connected to resistance R2; Resistance R3 is connected between 5 pin and 3 pin of described LCD circuit U3;

The dynamo-electric road of described one-key switch comprises S1, S2 and S3 tri-keyswitches, between 18 pin that keyswitch S1 is connected to described system-level single-chip microcomputer U1 and ground wire, between 21 pin that keyswitch S2 is connected to described system-level single-chip microcomputer U1 and ground wire, between 22 pin that keyswitch S3 is connected to described system-level single-chip microcomputer U1 and ground wire;

26 pin of described voice reporting temperature circuit U 4 and described system-level single-chip microcomputer U1,27 pin and 28 pin connect.