CN1486058A

CN1486058A - Testing method based on the temperature and humidity of mobile phone and mobile phone thereof

Info

Publication number: CN1486058A
Application number: CNA021348421A
Authority: CN
Inventors: 鹏郑; 郑鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-25
Filing date: 2002-09-25
Publication date: 2004-03-31

Abstract

The invention refers to temperature and humidity testing method based on mobile phone. It includes: system initialization, searches net system signal, the mobile phone which is in stand-by state and has no outer response or the outer response has been processed, enters the temperature and humidity testing. The DSP of mobile phone works out the value of temperature and humidity and displays in screen, and returns to stand-by state, makes the mobile phone has the portable digital thermometer and humidiometer. The accuracy of temperature can reach 0.1, the accuracy of humidity can reach RH1%.

Description

Temperature, humidity measurement method and mobile phone thereof based on mobile phone

Technical field

The present invention relates to mobile phone (being commonly called as mobile phone), the mobile phone of particularly a kind of temperature, humidity measurement method and energy displays temperature and humidity based on mobile phone.

Background technology

Prior mobile phone has had strong functions, except basic call function, possessed functions such as clock, calendar, account, business card are thin, even some modish mobile phones have increased frequency modulation (FM) stereophonic broadcasting receiving function, have further evoked the new round spending spree of mobile phone just because of this function.

Very lagre scale integrated circuit (VLSIC) with regard to mobile phone inside, the resource that it had also is not fully utilized, the detection that for example also can carry out ambient temperature, humidity etc. when cell phone standby shows to be handled, make conventional mobile phone have thermometer, hygroscopic effect, but the mobile phone of this band temperature, humidity display function is not seen the relevant document disclosure at present.

Summary of the invention

The objective of the invention is to further utilize the mobile phone own resources, the mobile phone of a kind of temperature based on mobile phone, humidity measurement method and energy displays temperature and humidity is provided, give the consumer function of practicality, fashion, hommization more, can normal talking, monitoring in real time and displays temperature, humidity allow the consumer experience the variation of external environment conscientiously again.

Temperature and humidity method of testing based on mobile phone of the present invention, comprise: system initialization, receive rope network system signal, the mobile phone that is in holding state is under the situation of not having the extraneous response or the extraneous response that disposes, entering temperature and humidity detects, calculate the temperature and humidity value by the digital signal processor (DSP) of mobile phone or central processing unit (CPU) and send display screen to show, return holding state.

Comprise one and monitor extraneous response of step after described temperature and humidity detects step, the extraneous response of appearance is correspondingly processed, otherwise enters the demonstration of temperature and humidity.

A kind of mobile phone of energy displays temperature, comprise mobile phone circuit part 11, it is characterized in that: also comprise sampling and modular converter 12, sampling and modular converter 12 inputs are connected to temperature-sensing element 13, and the output signal of sampling and modular converter 12 is received an input of the digital signal processing unit of mobile phone circuit part 11.Described sampling and modular converter 12 inputs also are connected to humidity sensor element 14, constitute the mobile phone of energy displays temperature and humidity.

Compare with existing mobile phone, mobile phone of the present invention has the following advantages:

The present invention has made full use of the resource of the very lagre scale integrated circuit (VLSIC) of mobile phone, under holding state, realized the real-time testing and the demonstration of temperature and humidity making mobile phone increase with oneself " digital thermometer, Digital Hygrometer " function by sampling and modular converter and sensing element.

Owing to adopt the induced signal Direct Transform form of temperature, humidity sensor element, have very high reliability and accuracy, the monitor temperature precision reaches 0.1 ℃, and the humidity precision reaches RH1%.

User place ambient temperature information can be informed this user (having serious stimulation or harm environment caution user one can realize by software function such as: overheated, cold excessively, temperature sudden change etc.) with ad hoc fashion; in the vital interests of to a certain degree protecting the consumer, meet the trend that the consumer pursues mobile phone fashion function simultaneously.

Description of drawings

Fig. 1 is an electric theory diagram of the present invention;

Fig. 2 A, B are sampling and the modular converter embodiment circuit diagram of Fig. 1;

Fig. 3 is a workflow diagram of the present invention.

Embodiment

Below in conjunction with the embodiment accompanying drawing the present invention program is further described.

Frame of broken lines inside among Fig. 1 is divided into the basic functional block diagram of existing mobile phone, the circuit block diagram that outside black matrix partly increases for the present invention.

Fig. 1 mobile phone circuit part 11 belongs to known technology, can be with reference to relevant mobile phone circuit data.Usually mainly comprise: digital signal processor (DSP) or (CPU), be connected to sending module, receiver module and multifunction module between DSP and the antenna, be connected to the control transmission of DSP, the logic control element of receiver module, respectively the SIM card that is connected with DSP, LCDs, memory and keyboard etc.

The present invention has increased a sampling and modular converter 12 on known mobile phone circuit basis, sampling and modular converter 12 input jointing temp sensing elements 13, the output signal of sampling and modular converter 12 is received an input of the digital signal processing unit of mobile phone circuit part 11.Sampling and modular converter 12 inputs also are connected to humidity sensor element 14.

In line with analyzing from the consumer angle, sampling and conversion functional module 12 can be integrated in digital signal processor shown in Figure 1 (DSP) or central processing unit (CPU) parts in the integrated circuit (IC) design process afterwards, can greatly reduce cost; Also sampling and conversion functional module 12 can be become one with temperature-sensing element 13, humidity sensor element 14.

Electric elements with the combination of component of machine are: the placement of temperature-sensing element 13 and humidity sensor element 14 should make the actual induction position of sensing element well contact (generally adopting the perforate mode to contact) with external environment condition, and must with the mobile phone outer casing relative fixed, simultaneously should be as far as possible with heat generating components away from (such as: heat generating components such as battery, display screen, transmitting-receiving radio road, central processing unit), to reach monitoring accuracy and reliability; It is inner and fixing that sampling and conversion functional module 12 should be positioned over mobile phone outer casing, and do not influence other circuit, places usually on the mobile telephone main unit plate.

As shown in Figure 1, be in the holding state mobile phone monitoring and have or not this mobile phone to be called out or this cellie has or not this mobile phone of operation, in operating handset or holding state, general inquiry or the interrupt mode of adopting come the response external request; The also enough response external requests of the system resource of mobile phone; The system of mobile phone adopt on the whole serial mode communication (basically by serial data, serial clock and gating, enable effectively, signal such as the control of shaking hands), but the matrix-scanning mode is often adopted in keyboard operation.Concrete form is as the criterion with the mobile phone known technology, can be with reference to relevant mobile phone circuit data.

With reference to the outside black matrix part of the empty frame of Fig. 1, the present invention realizes the monitoring of temperature, humidity in the following manner.At first, mobile phone is in normal operating conditions (comprising conversation, feature operation, standby etc.), waits for external echo; Because sensing

element

13,14 directly contacts with external environment condition, sensing element must produce induction to external environment condition, and the relevant signal (can be parameters such as voltage, electric current, resistance characteristic) of formation, send into sampling and change-over circuit device 12, in this device, will form corresponding data flow and (can adopt temperature, humidity one frequency translation; Current transformation; Forms such as voltage transformation, but the present invention adopts temperature, humidity one frequency translation, can directly be discerned and handle by DSP or CPU because convert the signal of frequency to, and have favorable linearity; And adopt electric current or voltage transformation form, and this signal can not be directly by DSP or CPU identification, and these signals also need to be transformed into digital signal by A/D converter, and further are transformed into serial signal---effectively to utilize the resource of DSP or CPU; So often adopt more practical and effective temperature, humidity one frequency translation, these data flow are sent to DSP or CPU again with serial mode, and DSP or CPU can adopt inquiry mode or timer interrupt mode (often to adopt inquiry mode, help the functional completeness of safeguards system; As adopt timer interrupt mode, then should adopt low priority), then DSP or CPU after response to collected data flow analyze, a series of processing such as judgement (different different temperature, the moisture conditions of frequency reflection), produce corresponding display data stream at last, these data flow can directly or after relevant operation show in LCDs (LCD).

Fig. 2 A, B are two physical circuits of sampling and modular converter.Fig. 2 A sampling and modular converter 12 adopt at least one 555 time-base circuit, 8,4 pin of 555 time-base circuits connect power Vcc, 1 pin ground connection, 3 pin output switching signal, 2,6 pin are by capacitor C ground connection, connecting resistance R between 2,6 pin of 555 time-base circuits and 7 pin connects sensing element between 7 pin of 555 time-base circuits and the power Vcc.Fig. 2 B circuit and Fig. 2 A circuit are basic identical, and difference is to connect sensing element between 2,6 pin of 555 time-base circuits and 7 pin, connecting resistance R between 7 pin of 555 time-base circuits and power Vcc.Described sensing element is platinum resistance, thermistor Rt or wet quick sensing element.

At first senser element makes the impedance phase change of itself with the variation of ambient temperature, the value of this variation will directly influence the time constant of the RC impulse electricity of integrated circuit NE555, the variation of its time constant will directly be reflected at the variation of frequency of the output port of integrated circuit, and has favorable linearity; The frequency signal of this variation just can directly be sent into the DSP of serial or arbitrary port (input port or input/output port) with input function of CPU, by DSP or CPU the testing result of its frequency is determined extraneous state of temperature.

Fig. 3 is the operating handset FB(flow block), wherein is with dotted portion to represent handset processes temperature detection basic procedure.At first system initialization is received rope network system signal, and the mobile phone that is in holding state enters temperature and humidity and detects under the situation of not having the extraneous response or the extraneous response that disposes, sets sampling period Ts (Fig. 3) earlier; Check the state of setting-up time Ts then, if setting-up time does not arrive, continue to check, if setting-up time has or not extraneous response to then further checking, have and then return processing, do not have and then further set sampling time Tk, and the data flow of detection acquired signal port, if arriving, the time then continues to detect, if the time has or not external world's response to checking, have and then return processing, do not have the state that then reads this port register, analyze and calculate the pairing temperature of this state, humidity directly or indirectly is presented on the LCDs LCD by system then, and, return holding state to sampling time Ts zero clearing.

Insert the process of the extraneous state of response in the flow process so that guarantee when handling this flow process functional completeness, reliability and instantaneity to whole system; Its flow process form can have diversity, as long as reach the purpose and the validity of taking into account system of detected temperatures.

Claims

1, a kind of temperature and humidity method of testing based on mobile phone, comprise: system initialization, receive rope network system signal, the mobile phone that is in holding state is under the situation of not having the extraneous response or the extraneous response that disposes, entering temperature and humidity detects, calculate the temperature and humidity value by the digital signal processor (DSP) of mobile phone or central processing unit (CPU) and send display screen to show, return holding state.

2, according to the described method of testing of claim 1, it is characterized in that: comprise that after described temperature and humidity detects step monitors an extraneous response of step, the extraneous response of appearance is correspondingly processed, otherwise enters the demonstration of temperature and humidity.

3, according to the described method of testing of claim 1, it is characterized in that described temperature and humidity detects step and is: set sampling period Ts, in setting-up time, further monitor and handle extraneous response, do not have extraneous response and set sampling time Tk, the DSP of mobile phone or CPU detect the data flow of being sent here by sampling and modular converter of acquired signal port, deposit port register in.

4, the mobile phone of energy displays temperature, comprise the mobile phone circuit part, it is characterized in that: also comprise sampling and modular converter (12), sampling and modular converter input are connected to temperature-sensing element (13), and the output signal of sampling and modular converter is received an input of the digital signal processor (DSP) of mobile phone circuit part (11).

5, according to the mobile phone of the described energy of claim 4 displays temperature, it is characterized in that: described sampling and modular converter (12) input also is connected to humidity sensor element (14).

6, according to claim 4 or 5 described mobile phones that can displays temperatures, it is characterized in that: described sampling and modular converter (12) adopt at least one 555 time-base circuit, 8,4 pin of 555 time-base circuits connect power Vcc, 1 pin ground connection, 3 pin output switching signal, 2,6 pin are by capacity earth, and connecting resistance or sensing element between 2,6 pin of 555 time-base circuits and 7 pin connect sensing element or resistance between 7 pin of 555 time-base circuits and the power Vcc.

7, according to the mobile phone of the described energy of claim 6 displays temperature, it is characterized in that: described sensing element is platinum resistance or thermistor.

8, according to the mobile phone of claim 4 or 5 described energy displays temperatures, it is characterized in that: described sampling and modular converter (12) are integrated in the digital signal processor (DSP) of mobile phone circuit part.