CN102322928B - Electronic scale, mobile equipment, body weight measuring system and wireless transmission method - Google Patents
Electronic scale, mobile equipment, body weight measuring system and wireless transmission method Download PDFInfo
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- CN102322928B CN102322928B CN201110160098.3A CN201110160098A CN102322928B CN 102322928 B CN102322928 B CN 102322928B CN 201110160098 A CN201110160098 A CN 201110160098A CN 102322928 B CN102322928 B CN 102322928B
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Abstract
The invention belongs to the technical field of measurement of human body weight, relating to an electronic scale. The electronic scale comprises a device main body, a body weight measuring unit, a body weight data memory unit, a conversion unit and an audio transmitting unit, wherein the conversion unit is used for carrying out DTMF (Dual-Tone Multi-Frequency) audio decoding on body weight data in the memory unit, converting the decoded body weight data into corresponding DTMF audio data and outputting the DTMF audio data; and the audio transmitting unit is used for converting the DTMF audio data output by the conversion unit into a sound signal carrying DTMF audio information and transmitting the sound signal. The invention simultaneously provides mobile equipment which can wirelessly communicate with the electronic scale; and by integrating hardware equipment, the invention also provides a body weight measuring system comprising the electronic scale and the mobile equipment as well as a body weight data wireless transmission method. According to the invention, an expensive wireless communication module is avoided, thus the cost is reduced; meanwhile, the reliability of data transmission is ensured and the convenience for users is realized.
Description
Technical field
The present invention relates to electronic scales, particularly relate to the method that electronic scales measurement data is transmitted and received.
background technology
Current electronic scales adopts sensor and single-chip microcomputer to complete the measurement of body weight more, and carrys out display measurement result by LCD display, but cannot keep a record and add up and further analyze for individual measured body weight result,
For this reason, CN201666812 disclose a kind of by wirelessly transmitting data the electronic scales with wave point to computing machine, by bluetooth transceiver or 2.4G wireless transceiver, realize wireless weight data and be uploaded on computer and internet, so that the persistence of individual health data and analysis.
Although above technical scheme is brought certain facility to gauger, in using, also have the following disadvantages: need to increase communication module, thereby increase the cost of product; During use, need match authentication to device, increase operation easier.
In known techniques, DTMF is widely used in telephone field, but dtmf signal send and receive is to take telephone network as medium substantially, i.e. telephone wire, antenna, and electromagnetic wave is carrier, does not have to take the application of sound as the short-range data transmission of media implementation.
summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned defect and the technology prejudice that known technology exists, and provide a kind of electronic scales measurement data short range wireless transmission and method of reseptance, with in order to realize electronic scales and the mobile device of the method, and the body weight measuring system being formed by electronic scale and mobile device, thereby realize management and the analysis of measurement data, and data transmission is reliable, simple in structure, with low cost, to gauger, offer convenience.
The present invention is achieved by the following technical solutions, according to a kind of electronic scales provided by the invention, comprising:
Apparatus main body;
Measured body weight module, for measuring body weight data;
Storage unit, for storing the weight data measuring;
Wherein, also comprise:
Converting unit, encodes frequently for the weight data of storage unit is carried out to dtmf tone, is converted to corresponding dtmf tone audio data output;
Audio frequency transmitting element, for being converted to the dtmf tone audio data of converting unit output to carry the voice signal of dtmf tone frequency information and send.
Described audio frequency transmitting element is play time >=55 millisecond of a dtmf tone, and sets quiet time of one >=60 milliseconds and separate two continuous dtmf tones.Preferably, the time that audio frequency transmitting element is play a dtmf tone is 100 milliseconds, and setting is separated two continuous dtmf tones with the quiet time of 120 milliseconds.
The present invention can also take following technical scheme further to realize:
Above-mentioned electronic scales, wherein, described audio frequency transmitting element comprises connected successively block isolating circuit, driving circuit and loudspeaker, described block isolating circuit is connected with the output terminal of converting unit;
Above-mentioned electronic scales, wherein, described loudspeaker is placed in apparatus main body inside, and towards the upper surface of apparatus main body, corresponding apparatus main body surface has aperture;
The present invention provides a kind of and above-mentioned electronic scales matching used mobile device simultaneously, comprise audio frequency receiving element, decoding unit and measurement data storage unit, wherein, described audio frequency receiving element, for receiving the voice signal that carries dtmf tone frequency information being sent by electronic scales; Described decoding unit, the voice signal decoding of carrying dtmf tone frequency information for audio frequency receiving element is received, is converted to corresponding weight data.
As preferred implementation, above-mentioned mobile device, wherein, described mobile device is the mobile phone with sound-recording function, the recording unit that described audio frequency receiving element is mobile phone;
Above-mentioned mobile device, wherein, described decoding unit comprises:
Decoding program starts module, after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoder module, the voice signal that carries dtmf tone frequency information that each is continued, according to predetermined decoding program decoding N time, obtains N data;
Valid data judge module, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops module, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
Above-mentioned mobile device, wherein, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
The present invention also provides a kind of weight data radio transmitting method, is applied to the body weight measuring system that consists of electronic scales and mobile device, wherein, comprises the following steps:
(1) by electronic scales, weight data is encoded, convert thereof into dtmf tone audio data;
(2) electronic scales sends dtmf tone audio data to carry the form of the voice signal of dtmf tone frequency information;
(3) by mobile device, receive and carry the dtmf tone voice signal of information frequently;
(4) to carrying the voice signal of dtmf tone frequency information, decode, be converted to corresponding weight data.
As preferred implementation, above-mentioned weight data radio transmitting method, wherein, in (4) step, decode procedure specifically comprises:
Decoding program starts, and after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoding, according to predetermined decoding program decoding N time, obtains N data to each lasting dtmf tone audio data;
Valid data judgement, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
Above-mentioned weight data radio transmitting method, wherein, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
The comprehensive above-mentioned hardware device of the present invention proposes a kind of body weight measuring system simultaneously, comprises electronic scales and mobile device, and wherein, described electronic scales, comprising:
Apparatus main body;
Measured body weight module, for measuring body weight data;
Storage unit, for storing the weight data measuring;
Converting unit, encodes frequently for the weight data of storage unit is carried out to dtmf tone, is converted to corresponding dtmf tone audio data output;
Audio frequency transmitting element, for being converted to the dtmf tone audio data of converting unit output to carry the voice signal of dtmf tone frequency information and send;
Described mobile device, comprising: audio frequency receiving element, decoding unit, and measurement data storage unit, described audio frequency receiving element, for receiving the voice signal that carries dtmf tone frequency information being sent by electronic scales; Described decoding unit, decodes for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, and is converted to corresponding weight data.
As preferred implementation, described mobile device is the mobile phone with sound-recording function, the recording unit that described receiving element is mobile phone.
Above-mentioned body weight measuring system, wherein, described decoding unit comprises:
Decoding program starts module, after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoder module, the voice signal that carries dtmf tone frequency information that each is continued, according to predetermined decoding program decoding N time, obtains N data;
Valid data judge module, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops module, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
Above-mentioned body weight measuring system, wherein, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
In a word, by above structure and method, the present invention compared with prior art at least has the following advantages:
Avoid expensive wireless communication module, reduced cost, guaranteed the reliability of data transmission simultaneously, to gauger, brought facility.Preferred embodiment of the present invention, utilize mobile phone all with sound pick-up outfit realize wireless telecommunications, in the situation that not increasing hardware cost, both can realize the transmitting of data.In addition, by carrying out discrete Fourier transform (DFT) to carrying the voice signal of dtmf tone frequency information, obtain gain and the gain of 2 subharmonic and the threshold value comparison of setting respectively of the corresponding frequency of DTMF, judge that whether frequency point data is interfering data, reaches jamproof object.Due to the application compared to traditional and the DTMF technology in wire-telephony, dtmf signal send and receive of the present invention is to take sound as medium, being easy to be subject to stronger ambient sound and voice disturbs, by the voice signal that carries dtmf tone frequency information that each is continued, according to predetermined decoding program, decode N time, the number of the identical data position that decoding obtains is greater than the judgment mode that preset value M is defined as valid data, further improve antijamming capability, guarantee the accuracy of decoding.
Accompanying drawing explanation
Fig. 1 is the illustrative view of functional configuration of electronic scales of the present invention;
Fig. 2 is the illustrative view of functional configuration of mobile device of the present invention;
Fig. 3 is the fundamental diagram that electronic scales of the present invention and mobile device carry out radio communication;
Fig. 4 is the schematic appearance of body weight measuring system of the present invention;
Fig. 5 is the mobile device decoding process figure of preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to structure of the present invention, feature and effect thereof, be described in detail as follows:
As shown in Figure 1, the invention provides a kind of electronic scales 100, comprising:
Measured body weight unit 1, for measuring body weight data;
Converting unit 3, for the weight data of storage unit is encoded, is converted to corresponding dtmf tone audio data;
Audio frequency transmitting element 4, is converted to sound signal for the DTMF speech data that converting unit is converted to.
Preferably, above-mentioned electronic scales, wherein said converting unit comprises:
Storing sub-units 31, for storing the dtmf tone audio data recording;
Preferably, aforesaid electronic scales, wherein, the time that described audio frequency transmitting element is play a dtmf tone is 100 milliseconds, and separates two continuous dtmf tones with 120 milliseconds quiet.
As shown in Figure 2, the present invention also provides a kind of mobile device 200, comprising:
Audio frequency receiving element 5, the voice signal that carries dtmf tone frequency information sending for receiving scale;
Decoding unit 6, decodes for the voice signal that carries dtmf tone frequency information that described audio frequency receiving element is received, and is converted to corresponding weight data.
Measurement data storage unit 7, for storing the weight data after decoding unit transforms;
Preferably, aforesaid mobile device also comprises a data processing unit 8, for physiological parameter being done to further health analysis;
Preferably, above-mentioned mobile device, wherein, described mobile device is the mobile phone with sound-recording function, the recording unit 9 that described audio frequency receiving element is mobile phone;
Preferably, aforesaid mobile device, wherein, described decoding unit comprises:
Decoding program starts module 61, after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoder module 62, according to predetermined decode time decoding N time, obtains N data to each lasting dtmf tone audio data;
Valid data judge module 63, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops module 64, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
Above-mentioned mobile device, wherein, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
The present invention utilizes electronic scales and mobile device to realize a kind of weight data radio transmitting method, comprises the following steps:
(1) by electronic scales, weight data is encoded, convert thereof into dtmf tone audio data;
(2) electronic scales sends dtmf tone audio data to carry the form of the voice signal of dtmf tone frequency information;
(3) by mobile device, receive and carry the dtmf tone voice signal of information frequently;
(4) mobile device is decoded to carrying the voice signal of dtmf tone frequency information, converts corresponding weight data to.
Below in conjunction with preferred embodiment, specifically describe as follows:
Referring to Fig. 3, Fig. 4, audio frequency transmitting element of the present invention comprises block isolating circuit 11, loudspeaker driving circuit 12 and the several parts of loudspeaker 13 that connect successively.Can in advance the DTMF voice document recording be stored in to single-chip microcomputer 10 (being CPU in figure) inside, it is the storing sub-units of aforesaid converting unit, after the I0 mouth output of the dtmf tone audio data that converting unit is converted to by single-chip microcomputer, by audio frequency transmitting element, be converted to and carry the voice signal of dtmf tone frequency information and send.
Preferably, described loudspeaker is placed in apparatus main body inside, and towards the upper surface of apparatus main body, corresponding apparatus main body surface has aperture 14; Adopt this to be provided with and be beneficial to the sound pick-up outfit collection of recording.
Specific works principle following (seeing Fig. 4):
Suppose that given transmission data bulk is N (in the present embodiment, weight data is defined as 4 figure places, i.e. the transmission data bulk of XXX.X, so appointment is set to 4);
Single-chip microcomputer 10 receives after the measurement data of measured body weight unit 1 acquisition, data are read in storage unit 2, the converse routine of operation converting unit 3, the data-switching receiving is become to corresponding dtmf tone audio data, then single-chip microcomputer 10 be take the PWM ripple that the cycle is 32khz data is sent to block isolating circuit 11 by I0 mouth, by 11 pairs of data of block isolating circuit, undertaken passing to loudspeaker driving circuit 12 parts after filtering, data are amplified, then by loudspeaker 13, the voice signal that carries dtmf tone frequency information is sent.Playing a time that represents digital dtmf tone is 100 milliseconds, and utilizing the duration is that 120 milliseconds quiet separated two continuous dtmf tone data.Defining a dtmf tone is start bit, first plays this data bit before played data.
The mobile device 200 of the embodiment of the present invention is mobile phone, mobile phone needed to open the sound pick-up outfit 9 carrying before receiving, mobile phone utilizes sound pick-up outfit 9 to receive voice document, recording sampling rate is 8KHZ, after receiving start bit voice, start the data after recording and start decoding program, setting the data window of 136 points, 11 pairs of follow-up datas of decoding program are decoded.
When the voice signal that carries dtmf tone frequency information of 200 pairs of receptions of mobile device is decoded, first the voice signal that carries dtmf tone frequency information receiving is carried out to discrete Fourier transform (DFT), parse gain A u and the 2 subharmonic gain A uh of the corresponding frequency of dtmf tone, according to external environment setting threshold, if gain A u surpasses threshold value, be judged to be valid data.In addition, because speaking, the mankind comprise abundant harmonic wave, there is a strong possibility produces and disturbs on the corresponding frequency of dtmf tone, by judging whether the corresponding frequency of dtmf tone has stronger second harmonic to gain, judge that this frequency is that valid data or voice disturb, setting threshold accordingly, if harmonic wave surpasses setting threshold, illustrate the voice that come from the outside dry around, these data are rejected.By the method, reach jamproof object.
Above-mentioned decoding completes approximately needs 17ms, therefore the dtmf tone of 1 lasting 100ms can be decoded and be obtained 5 data bit, if identical data is more than or equal to 3 in 5 data, think that the data that the dtmf tone of this lasting 100ms loads are these identical datas, so just further played jamproof effect.Mobile phone receives the data bulk (in the present embodiment being 4) of appointment, stops receiving data, and decoding stops.Concrete reception flow process as shown in Figure 5.Receive after data, data will be stored in the measurement data storage unit 7 of mobile device.The data processing unit 8 of mobile device can be used specific data processing software to carry out after secondary treating to these data, and by output devices such as display screen, loudspeakers, with vision, the means such as the sense of hearing pass to user.
Time and the quiet time of playing a dtmf tone do not need to stick to above-mentioned parameter, can revise, and for example, the time of playing a dtmf tone is 55 milliseconds, and utilizing the duration is that 60 milliseconds quiet separated two continuous dtmf tone data.Defining a dtmf tone is start bit, first plays this data bit before played data.Mobile device 200 needed to open sound pick-up outfit 9 before receiving, mobile device end utilizes sound pick-up outfit 9 to receive voice document, after receiving start bit voice, 6 pairs of follow-up datas of decoding unit are decoded, the time of a speech data of decoding is 17ms, the dtmf tone of 1 lasting 55ms can be decoded and be obtained 3 data bit, if identical data is more than or equal to 2 in 3 data, think that the data that the dtmf tone of this lasting 55ms loads are these identical datas, further strengthen jamproof ability.
The present embodiment adopts standard dtmf code, in actual use, also can self-defining non-standard dtmf code, and coding schedule is as shown in the table, first row contains high-frequency audio and first column contains low frequency audio frequency.
The above is only preferred embodiment of the present invention, and any simple modification and equivalents that every foundation technical scheme of the present invention is carried out above embodiment, all belong to the scope of protection of the invention.
Claims (15)
1. an electronic scales, comprising:
Apparatus main body;
Measured body weight unit, for measuring body weight data;
Storage unit, for storing the weight data measuring;
It is characterized in that, also comprise:
Converting unit, encodes frequently for the weight data of storage unit is carried out to dtmf tone, is converted to corresponding dtmf tone audio data output;
Audio frequency transmitting element, for being converted to the dtmf tone audio data of converting unit output to carry the voice signal of dtmf tone frequency information and send.
Described audio frequency transmitting element is play time >=55 millisecond of a dtmf tone, and sets quiet time of one >=60 milliseconds and separate two continuous dtmf tones.
2. electronic scales according to claim 1, is characterized in that, described audio frequency transmitting element comprises connected successively block isolating circuit, driving circuit and loudspeaker, and described block isolating circuit is connected with the output terminal of converting unit.
3. electronic scales according to claim 2, is characterized in that, described loudspeaker is placed in apparatus main body inside, and towards the upper surface of apparatus main body, corresponding apparatus main body surface has aperture.
4. according to the electronic scales described in any one in claims 1 to 3, it is characterized in that, the time that described audio frequency transmitting element is play a dtmf tone is 100 milliseconds, and setting is separated two continuous dtmf tones with the quiet time of 120 milliseconds.
5. a mobile device, comprises audio frequency receiving element, decoding unit and measurement data storage unit, it is characterized in that, described audio frequency receiving element, for receiving the voice signal that carries dtmf tone frequency information being sent by electronic scales; Described decoding unit, decodes for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, and is converted to corresponding weight data.
6. mobile device according to claim 5, is characterized in that, described mobile device is the mobile phone with sound-recording function, the recording unit that described audio frequency receiving element is mobile phone.
7. mobile device according to claim 5, is characterized in that, described decoding unit comprises:
Decoding program starts module, after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoder module, the voice signal that carries dtmf tone frequency information that each is continued, according to predetermined decoding program decoding N time, obtains N data;
Valid data judge module, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops module, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
8. mobile device according to claim 7, it is characterized in that, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
9. a weight data radio transmitting method, is applied to the body weight measuring system that consists of electronic scales and mobile device, it is characterized in that, comprises the following steps:
(1) by electronic scales, weight data is encoded, convert thereof into dtmf tone audio data;
(2) electronic scales sends dtmf tone audio data to carry the form of the voice signal of dtmf tone frequency information;
(3) by mobile device, receive and carry the dtmf tone voice signal of information frequently;
(4) by mobile device, to carrying the voice signal of dtmf tone frequency information, decoded, be converted to corresponding weight data.
10. weight data radio transmitting method according to claim 9, is characterized in that, in (4) step, decode procedure specifically comprises:
Decoding program starts, and after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoding, according to predetermined decoding program decoding N time, obtains N data to each lasting dtmf tone audio data;
Valid data judgement, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
11. weight data radio transmitting methods according to claim 10, it is characterized in that, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
12. 1 kinds of body weight measuring systems, comprise electronic scales and mobile device, it is characterized in that,
Described electronic scales, comprising:
Apparatus main body;
Measured body weight module, for measuring body weight data;
Storage unit, for storing the weight data measuring;
Converting unit, encodes frequently for the weight data of storage unit is carried out to dtmf tone, is converted to corresponding dtmf tone audio data output;
Audio frequency transmitting element, for being converted to the dtmf tone audio data of converting unit output to carry the voice signal of dtmf tone frequency information and send;
Described mobile device, comprising: audio frequency receiving element, decoding unit, and measurement data storage unit, described audio frequency receiving element, for receiving the voice signal that carries dtmf tone frequency information being sent by electronic scales; Described decoding unit, decodes for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, and is converted to corresponding weight data.
13. body weight measuring systems according to claim 12, is characterized in that, described mobile device is the mobile phone with sound-recording function, the recording unit that described audio frequency receiving element is mobile phone.
14. according to the body weight measuring system described in claim 12 or 13, it is characterized in that, described decoding unit comprises:
Decoding program starts module, after receiving start bit voice, starts decoding program, starts subsequent sound audio data to decode;
Voice data decoder module, the voice signal that carries dtmf tone frequency information that each is continued, according to predetermined decoding program decoding N time, obtains N data;
Valid data judge module, the number of the identical data that decoding obtains is greater than preset value M and is defined as valid data;
Decoding program stops module, and the data bulk decoding that reaches appointment when the valid data number obtaining stops.
15. body weight measuring systems according to claim 14, it is characterized in that, when described predetermined decoding program is decoded for the voice signal that carries dtmf tone frequency information that audio frequency receiving element is received, first to carrying the voice signal of dtmf tone frequency information, carry out discrete Fourier transform (DFT), obtain gain and the gain of 2 subharmonic of the corresponding frequency of DTMF, if the gain of the corresponding frequency of DTMF surpasses default threshold value lower than predetermined threshold value or the gain of 2 subharmonic, judge that this frequency point data is interfering data, otherwise, judge that this frequency is effective frequency, table look-up and parse corresponding numerical value.
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| CN201110160098.3A CN102322928B (en) | 2011-06-15 | 2011-06-15 | Electronic scale, mobile equipment, body weight measuring system and wireless transmission method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3032536A1 (en) * | 2015-02-09 | 2016-08-12 | Pierre Brisson | ELECTRONIC SCALE WEIGHING METHOD AND CORRESPONDING SYSTEM |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377313B (en) * | 2012-04-12 | 2017-04-12 | 株式会社纳米软件 | Health measuring and managing system |
| CN103364066A (en) * | 2013-07-11 | 2013-10-23 | 中山市永衡日用制品有限公司 | Electronic scale using voice frequency to transmit data |
| CN106197637A (en) * | 2015-05-05 | 2016-12-07 | 北京康智乐思网络科技有限公司 | Intelligent weight scale system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4576244A (en) * | 1984-02-23 | 1986-03-18 | Zemco, Inc. | Dieter's weighing scale |
| JP2806397B2 (en) * | 1990-11-29 | 1998-09-30 | ローム株式会社 | DTMF signal receiving circuit |
| WO1998047252A2 (en) * | 1997-04-11 | 1998-10-22 | Geoffrey Stern | Personal audio message processor and method |
| US6542732B1 (en) * | 1999-04-07 | 2003-04-01 | Qualcomm Incorporated | System and method for use of dual-tone multi frequency signals in a wireless communication system |
| CN1933506A (en) * | 2005-09-14 | 2007-03-21 | 黄金富 | Method for recording the other party transmission information during talking and telephone |
| CN201043912Y (en) * | 2007-05-17 | 2008-04-02 | 上海衡成电子有限公司 | Human-computer dialogue acoustic control body weight scale |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3032536A1 (en) * | 2015-02-09 | 2016-08-12 | Pierre Brisson | ELECTRONIC SCALE WEIGHING METHOD AND CORRESPONDING SYSTEM |
| WO2016128658A1 (en) * | 2015-02-09 | 2016-08-18 | Pierre Brisson | Method for weighing using an electronic balance and corresponding system. |
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