CN208892631U - Bluetooth fetal gage circuit and fetal gage - Google Patents
Bluetooth fetal gage circuit and fetal gage Download PDFInfo
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- CN208892631U CN208892631U CN201721852025.XU CN201721852025U CN208892631U CN 208892631 U CN208892631 U CN 208892631U CN 201721852025 U CN201721852025 U CN 201721852025U CN 208892631 U CN208892631 U CN 208892631U
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Abstract
The utility model relates to a kind of bluetooth fetal gage circuit and fetal gages, comprising: power supply；It connects to power supply, for emitting the transmitting module of ultrasonic wave；For receiving the receiving module of ultrasonic echo；It is connect with transmitting module, receiving module and power supply, the signal processing module for being handled signal；It is connect with power supply and signal processing module, the bluetooth module being used for signal transmission；One end connects to power supply, and the other end is connect with bluetooth module, for remove power supply disturbance noise except making an uproar module.Above-mentioned bluetooth fetal gage circuit, so that the noise generated when Bluetooth communication reduces the interference of circuit, keeps the acquisition of fetal heart rate signal more accurate by adding on the power supply line powered to bluetooth except module of making an uproar.
Description
Technical field
The utility model relates to the field of medical instrument technology, more particularly to a kind of bluetooth fetal gage circuit and fetal gage.
Background technique
Ultrasonic fetal gage is widely used in medical institutions, family and individual as a kind of portable medical electronic instrument, is
Monitor the important instrument of fetal heartbeat.With the development of Bluetooth technology, more and more ultrasound fetal gages are equipped with bluetooth core
Piece connects mobile terminal by bluetooth equipment, heart of fetus data can be uploaded to mobile terminal, so as to preferably obtain
It takes fetus information and is preferably diagnosed.
However since ultrasonic fetal gage circuit includes the circuit to noise-sensitive such as demodulator circuit, in traditional ultrasound
The noise that 2.4GHz is generated when addition Bluetooth chip will lead to Bluetooth communication on fetal gage, affects the work of demodulator circuit etc.,
And then affect the acquisition of normal fetal heart rate signal.
Utility model content
Based on this, it is necessary to aiming at the problem that noise that bluetooth equipment generates causes fetal heart rate signal acquisition deviation occur, mention
For a kind of bluetooth fetal gage circuit.
A kind of bluetooth fetal gage circuit, comprising:
Power supply；
It is connect with the power supply, for emitting the transmitting module of ultrasonic wave；
For receiving the receiving module of ultrasonic echo；
It is connect with the transmitting module, the receiving module and the power supply, at the signal for being handled signal
Manage module；
It is connect with the power supply and the signal processing module, the bluetooth module being used for signal transmission；
One end is connect with the power supply, and the other end is connect with the bluetooth module, for removing removing for power supply disturbance noise
It makes an uproar module.
In one embodiment, the transmitting module includes:
It is connect with the power supply, the launch driving circuit amplified for the signal to control circuit；
It is connect with the launch driving circuit, for converting electrical signals to the transmitting terminal transducing of mechanical vibration wave signal
Device.
In one embodiment, the receiving module includes:
For mechanical vibration wave signal to be converted to the receiving end energy converter of electric signal；
It is connect with the receiving end energy converter, for amplifying the amplifying circuit of electric signal.
In one embodiment, the signal processing module includes:
One end is connect with the power supply, the other end is connect with the receiving module, for restoring the demodulation electricity of fetal heart rate signal
Road；
One end is connect with the power supply, the other end is connect with the demodulator circuit, for the fetal heart rate signal progress to reduction
The filter amplification circuit of filter amplifying processing.
In one embodiment, described except module of making an uproar includes:
One end connect with the power supply, the inductance of the other end and the bluetooth connection；
The capacitor that one end and the inductance connection, the other end are grounded.
A kind of fetal gage, which is characterized in that including above-mentioned bluetooth fetal gage circuit.
In one embodiment, bluetooth fetal gage circuit package is in shell.
Above-mentioned bluetooth fetal gage circuit, by adding on the power supply line powered to bluetooth except module of making an uproar, so that bluetooth is logical
The noise generated when letter reduces the interference of circuit, keeps the acquisition of fetal heart rate signal more accurate.
Detailed description of the invention
Fig. 1 is the bluetooth fetal gage circuit module schematic diagram of an embodiment；
Fig. 2 is the transmitting module structural schematic diagram of an embodiment；
Fig. 3 is the receiving module structural schematic diagram of an embodiment；
Fig. 4 is the signal processing module structural schematic diagram of an embodiment；
Fig. 5 is an embodiment except module diagram of making an uproar；
Fig. 6 is the bluetooth fetal gage circuit diagram of an embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 is the bluetooth fetal gage circuit module schematic diagram of an embodiment.As shown in Figure 1, the utility model provides one kind
Bluetooth fetal gage circuit, comprising:
Power supply 110, transmitting module 120, receiving module 130, processing module 140, except module 150 and the bluetooth module of making an uproar
160.
Transmitting module 120 is connect with power supply 110；140 one end of signal processing module connects power supply 110, and the other end connects
Receive module 130；Except making an uproar, module 150 connects power supply 110；140 one end of signal processing module connects power supply 110, and one end connection receives
Module 130, other end connection is except module 150 of making an uproar；160 one end connection signal processing module 140 of bluetooth module, other end connection remove
Module of making an uproar 150.
Specifically, circuit operation principle is that power supply 110 provides electric energy for entire circuit, and transmitting module 120 is used for conceptus
Ultrasonic wave is sent, receiving module 130 is used to receive the ultrasonic echo of fetus in conceptus, and the processing of signal processing module 140 is by receiving
The ultrasonic echo of fetus in conceptus that module 130 receives restores the original signal of fetal rhythm, and the tire sound that will pass through reduction
Signal is sent to bluetooth module 160, works caused noise jamming except module 150 is made an uproar for reducing bluetooth module 160, bluetooth mould
Block 160 carries out analog-to-digital conversion, the analog signal handled by signal processing module 140 is converted to digital signal, and be sent to
Terminal device.Wherein, terminal device can be the equipment such as mobile phone, fetal gage display, for showing the data such as fetal heart frequency.
More specifically, the principle of bluetooth fetal gage circuit provided by the utility model be Doppler frequency shift, when moving body with
When constant rate is moved along a direction, due to propagation difference, the variation of phase and frequency, i.e. sound source will cause
This variation is usually known as Doppler by the phenomenon that there are when relative motion, reflected acoustic wave frequency changes between object
Frequency displacement.Fetal heart frequency is detected using the principle of Doppler frequency shift, transmitting module emits the ultrasonic wave of certain frequency, ultrasonic signal
Heart of fetus is encountered after into fetomaternal, is then reflected back ultrasonic echo and is received module reception, is emitted by transmitting module
Ultrasonic signal frequency and the difference of the frequency of signal echo that receives of receiving module can calculate more Pood's frequency displacements, Jin Erke
To obtain the heart rate of fetus.
Bluetooth module 160 is in work in the frequency range of 2.4GHz, and the demodulator circuit in fetal gage circuit is to noise-sensitive, because
And bluetooth module 160 and demodulator circuit be when working at the same time, the noise for having 2.4GHz passes through power supply disturbance to demodulator circuit, influence
The acquisition of normal fetal heart rate signal.The interference of the noise of 2.4GHz except module 150 of making an uproar for removing the generation of bluetooth module 160, is removed
The resonance frequency for module of making an uproar is maintained near 2.4GHz, to eliminate interference of the noise to demodulator circuit well.
Above-mentioned bluetooth fetal gage circuit, by adding on the power supply line powered to bluetooth except module of making an uproar, so that bluetooth is logical
The noise generated when letter reduces the interference of circuit, keeps the acquisition of fetal heart rate signal more accurate.
Fig. 2 is the transmitting module structural schematic diagram of an embodiment.As shown in Fig. 2, in one embodiment, transmitting module
120 include:
It is connect with power supply 110, the launch driving circuit 122 amplified for the signal to control circuit；
It is connect with launch driving circuit 122, for converting electrical signals to the transmitting terminal energy converter of mechanical vibration wave signal
124。
Specifically, launch driving circuit 122 are used between power supply 110 and transmitting terminal energy converter 124 to control electricity
The signal on road amplifies.Energy converter is for realizing that it is another that electric energy, mechanical energy or sound can be converted to from a form of energy
The device of the energy of kind form, transmitting terminal energy converter 124 is for converting electrical signals to mechanical vibration wave signal, i.e., for sending
Ultrasonic signal.
Fig. 3 is the receiving module structural schematic diagram of an embodiment.As shown in figure 3, in one embodiment, receiving module
130 include:
For mechanical vibration wave signal to be converted to the receiving end energy converter 132 of electric signal；
It is connect with receiving end energy converter 132, for amplifying the amplifying circuit 134 of electric signal.
Energy converter is divided into emission type (electro-acoustic conversion) according to by piezoelectricity conversion regime, reception type (sound-electric conversion), transmitting-receiving
Dual-purpose type etc., the energy converter in the present embodiment are receiving end energy converter, i.e., convert the mechanical wave signals for receiving specific frequency
For electric signal, and electric signal of the amplifying circuit 134 then for will convert into amplifies processing.
Fig. 4 is the signal processing module structural schematic diagram of an embodiment.As shown in figure 4, in one embodiment, at signal
Managing module 140 includes:
One end connects to power supply, the other end and receiving module connect, for restoring the demodulator circuit 142 of fetal heart rate signal；
One end connects to power supply, the other end and demodulator circuit connect, for being filtered amplification to the fetal heart rate signal of reduction
The filter amplification circuit 144 of processing.
Demodulation is to restore the process of message from the modulated signal for carrying message.In the transmission of various information or processing system
In, the transmitting terminal message to be transmitted is modulated carrier wave, generates the signal for carrying this message.Receiving end must restore
The message transmitted can just be used, and here it is demodulation.Demodulator circuit 142 is the circuit for realizing demodulating process,
When bluetooth fetal gage works, bluetooth module 160 can generate the interference signal of 2.4GHz to demodulator circuit 142.For this purpose, in a reality
It applies in example, Dolby circuit is increased between power supply and bluetooth module, to solve noise jamming caused by bluetooth module work, tool
Body, one is provided except module of making an uproar.
Fig. 5 is an embodiment except module diagram of making an uproar.As shown in figure 5, in one embodiment, except making an uproar, module includes:
Inductance L and capacitor C.
The one end inductance L connects to power supply, the other end and bluetooth connection；
The one end capacitor C is connect with inductance L, other end ground connection.
Since the inductance of different model has different resonance frequencies with capacitor, in selection of the inductance with capacitor,
What needs to be satisfied is that requiring the resonance frequency of inductance and capacitor to be maintained near 2.4GHz, to reduce 160 pairs of bluetooth module demodulation
Noise jamming caused by circuit 142.
Fig. 6 is the bluetooth fetal gage circuit diagram of an embodiment.As shown in fig. 6, in one embodiment, bluetooth tire sound
Instrument circuit includes:
Power supply 110, launch driving circuit 122, transmitting terminal energy converter 124, receiving end energy converter 132, amplifying circuit 134,
Demodulator circuit 142, filter amplification circuit 144, inductance L, capacitor C and bluetooth module 160.
Specifically, launch driving circuit 122 is connect with power supply 110；Transmitting terminal energy converter 124 and launch driving circuit 122
Connection；Amplifying circuit 134 is connect with receiving end energy converter 132；142 one end of demodulator circuit is connect with power supply 110, the other end with put
Big circuit 134 connects；144 one end of filter amplification circuit is connect with power supply 110, and the other end is connect with demodulator circuit 142；Inductance L
It is connect with power supply 110；The one end capacitor C is connect with inductance L, other end ground connection；160 one end of bluetooth module connects capacitor C, the other end
Connect filter amplification circuit 144.
Specifically, the working principle of above-mentioned bluetooth fetal gage are as follows: power supply 110 is for providing electric energy, launch driving circuit 122
The signal of control circuit is amplified, and sends control signals to transmitting terminal energy converter 124, transmitting terminal energy converter 124 will
Electric signal is converted to the mechanical shock wave signal of corresponding frequencies, i.e., sends ultrasonic signal to conceptus, and receiving end energy converter 132 will
The mechanical wave vibration signal for receiving specific frequency is converted to electric signal, that is, receives the ultrasound that fetus returns in conceptus and return
Wave, the ultrasound echo signal that amplifying circuit 134 receives receiving end energy converter 132 amplifies, and is sent to demodulator circuit
142, demodulator circuit 142 restores the original signal of fetal rhythm according to the electric signal of amplification, and is sent to filter amplification circuit 144,
The original signal of 144 pairs of filter amplification circuit reduction is filtered and enhanced processing, and the modulus for being sent to bluetooth module 160 turns
Digital signal is sent to terminal device, is communicated with terminal device by parallel operation, bluetooth module 160, due to 160 work of bluetooth module
The noise signal that 2.4GHz is generated when making, has influenced the work of demodulator circuit 142, therefore removing of forming of inductance L and capacitor C is made an uproar
Circuit, in the frequency range of 2.4GHz, reduces influence of the noise signal to demodulator circuit by work.
A kind of bluetooth fetal gage, including above-mentioned bluetooth fetal gage circuit.
Above-mentioned fetal gage, by adding on the power supply line powered to bluetooth except module of making an uproar, so that being generated when Bluetooth communication
Noise the interference of circuit is reduced, keep the acquisition of fetal heart rate signal more accurate.
In one embodiment, bluetooth fetal gage circuit package is in shell.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (7)
1. a kind of bluetooth fetal gage circuit characterized by comprising
Power supply；
It is connect with the power supply, for emitting the transmitting module of ultrasonic wave；
For receiving the receiving module of ultrasonic echo；
It is connect with the transmitting module, the receiving module and the power supply, the signal processing mould for being handled signal
Block；
It is connect with the power supply and the signal processing module, the bluetooth module being used for signal transmission；
One end is connect with the power supply, the other end and the bluetooth connection, for remove power supply disturbance noise except module of making an uproar.
2. bluetooth fetal gage circuit according to claim 1, which is characterized in that the transmitting module includes:
It is connect with the power supply, the launch driving circuit amplified for the signal to control circuit；
It is connect with the launch driving circuit, for converting electrical signals to the transmitting terminal energy converter of mechanical vibration wave signal.
3. bluetooth fetal gage circuit according to claim 1, which is characterized in that the receiving module includes:
For mechanical vibration wave signal to be converted to the receiving end energy converter of electric signal；
It is connect with the receiving end energy converter, for amplifying the amplifying circuit of electric signal.
4. bluetooth fetal gage circuit according to claim 1, which is characterized in that the signal processing module includes:
One end is connect with the power supply, the other end is connect with the receiving module, for restoring the demodulator circuit of fetal heart rate signal；
One end is connect with the power supply, the other end is connect with the demodulator circuit, for being filtered to the fetal heart rate signal of reduction
The filter amplification circuit of enhanced processing.
5. bluetooth fetal gage circuit according to claim 1, which is characterized in that described except module of making an uproar includes:
One end connect with the power supply, the inductance of the other end and the bluetooth connection；
The capacitor that one end and the inductance connection, the other end are grounded.
6. a kind of fetal gage, which is characterized in that including the bluetooth fetal gage circuit as described in claim 1 to 5.
7. fetal gage according to claim 6, which is characterized in that the bluetooth fetal gage circuit package is in shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721852025.XU CN208892631U (en) | 2017-12-26 | 2017-12-26 | Bluetooth fetal gage circuit and fetal gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721852025.XU CN208892631U (en) | 2017-12-26 | 2017-12-26 | Bluetooth fetal gage circuit and fetal gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208892631U true CN208892631U (en) | 2019-05-24 |
Family
ID=66564986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721852025.XU Active CN208892631U (en) | 2017-12-26 | 2017-12-26 | Bluetooth fetal gage circuit and fetal gage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208892631U (en) |
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2017
- 2017-12-26 CN CN201721852025.XU patent/CN208892631U/en active Active
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