CN209074605U - A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System - Google Patents
A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System Download PDFInfo
- Publication number
- CN209074605U CN209074605U CN201821249434.5U CN201821249434U CN209074605U CN 209074605 U CN209074605 U CN 209074605U CN 201821249434 U CN201821249434 U CN 201821249434U CN 209074605 U CN209074605 U CN 209074605U
- Authority
- CN
- China
- Prior art keywords
- ecg
- capacitor
- rectifier
- resistance
- input terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a kind of exchange lead-fail detector detection circuits for bipolar electrode ECG Gathering System, including relaxor, rectifier, hysteresis comparator, non-essential resistance, first resistor, second resistance, first capacitor and the second capacitor；Two outputs of ac small signal current source are connected respectively on two electrodes of ecg amplifier input terminal；Non-essential resistance both ends are connected on two electrodes of ecg amplifier input terminal；The relaxor both ends are connected on two electrodes of ecg amplifier input terminal；The one of electrode of ecg amplifier connects rectifier with first resistor by first capacitor, another electrode of the ecg amplifier connects rectifier with second resistance by the second capacitor；The rectifier is connect with hysteresis comparator positive input terminal.The utility model overcomes the case where lead during ecg signal acquiring surprisingly falls off, can integrated level it is high, the normal work of ECG Gathering System has been effectively ensured.
Description
Technical field
The utility model relates to ecg signal acquirings, process field, and in particular to one kind is used for bipolar electrode electrocardiogram acquisition system
The exchange lead-fail detector detection circuit of system.
Background technique
Acquisition electrocardiosignal usually requires electrode connection, if lead-fail detector or poor contact will lead to collected electrocardio
Abnormal signal influences normal medical diagnosis.And it is difficult when lead poor contact through human eye or micro-judgment, therefore lead
The detection that falls off is the essential module of ECG Gathering System.
Direct current lead-fail detector detection pattern is only applicable to three-electrode configuration, and when using two electrodes, exchange lead is de-
It is highly useful to fall detection pattern.And the major defect of existing exchange lead-fail detector detection circuit is that module is more, circuit is complicated, is caused
Circuit area is big, power consumption is high, there may be certain rate of false alarms, is unfavorable for electrocardiogram acquisition equipment small area, low power dissipation design.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of exchange leads for bipolar electrode ECG Gathering System
Fall off detection circuit, to solve the case where lead during ecg signal acquiring surprisingly falls off, can integrated level it is high, be effectively ensured
The normal work of ECG Gathering System.
To achieve the above object, the utility model is implemented with the following technical solutions:
A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System, including relaxor, rectification
Device, hysteresis comparator, non-essential resistance, first resistor, second resistance, first capacitor and the second capacitor；Ac small signal current source
Two outputs be connected respectively on two electrodes of ecg amplifier input terminal；Non-essential resistance both ends are connected to ecg amplifier
On two electrodes of input terminal；The relaxor both ends are connected on two electrodes of ecg amplifier input terminal；It is described
The one of electrode of ecg amplifier connects rectifier, another electricity of the ecg amplifier with first resistor by first capacitor
Pole connects rectifier with second resistance by the second capacitor；The rectifier is connect with hysteresis comparator positive input terminal.
Further, the frequency of oscillation expression formula of the relaxor are as follows:
WhereinCFor the capacitance of charging capacitor,V H For high level,V L For low level,I b For bias current.
Further, the resistance value of the non-essential resistance is about 10 M Ω.
Further, two square wave low current signals of the relaxation oscillator output are identical.
Further, the first resistor is equal with the resistance value of second resistance, the capacitance phase of first capacitor and the second capacitor
Deng.
Further, the rectifier is current-mode nesting full-wave rectifier.
Further, the relaxation oscillator and hysteresis comparator are replaced by other types of oscillator and compare
Device.
The utility model has the advantages that compared with prior art
The method that the utility model uses exchange detection realizes the detection of ECG Gathering System lead-fail detector, and structure is complicated
Degree is not high, ensure that the high reliability of system, saves circuit area, advantageously reduce system power dissipation, meets bipolar electrode electrocardio
The requirement of acquisition system lead-fail detector detection, the problems such as effectively preventing abnormal signal caused by lead-fail detector.
Detailed description of the invention
Fig. 1 is the utility model circuit framework schematic diagram；
Fig. 2 is the amplifier architecture figure without lead-fail detector detection in an embodiment of the utility model；
In figure: 1- relaxor, 2- ecg amplifier, 3- rectifier, 4- hysteresis comparator, 5- ecg amplifier.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and embodiments.
Please referring to Fig. 1, the present embodiment provides a kind of exchange lead-fail detector detection electricity for bipolar electrode ECG Gathering System
Road, including relaxor 1, rectifier 3, hysteresis comparator 4, non-essential resistanceR, first resistorR 1, second resistanceR 2, first electricity
HoldC 1With the second capacitorC 2；Two of ac small signal current source export two electricity for being connected respectively to 2 input terminal of ecg amplifier
On extremely；Non-essential resistanceRBoth ends are connected on two electrodes of 2 input terminal of ecg amplifier；1 both ends of the relaxor connection
Onto two electrodes of 2 input terminal of ecg amplifier；2 positive electrode of ecg amplifier passes through first capacitorC 1And first resistorR 1It is connected to rectifier 3,2 negative electrode of ecg amplifier passes through the second capacitorC 2And second resistanceR 2It is connected to rectifier 3；
The rectifier 3 is connect with 4 positive input terminal of hysteresis comparator.
In an embodiment of the present invention, the frequency of oscillation expression formula of the relaxor 1 are as follows:
WhereinCFor the capacitance of charging capacitor,V H For high level,V L For low level,I b For bias current.
In an embodiment of the present invention, the non-essential resistanceRResistance value be about 10 M Ω.
In one embodiment of utility model, two square wave low current signals that the relaxation oscillator 1 exports are identical.
In an embodiment of the present invention, the first resistorR 1With second resistanceR 2Resistance value is equal, first capacitorC 1With
Two capacitorsC 2Capacitance it is equal.
In an embodiment of the present invention, the rectifier 3 is current-mode nesting full-wave rectifier.
In an embodiment of the present invention, the relaxation oscillator 1 and hysteresis comparator 4 are replaced by other types of
Oscillator and comparator.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (5)
1. a kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System, it is characterised in that: shake including relaxation
Swing device, rectifier, hysteresis comparator, non-essential resistance, first resistor, second resistance, first capacitor and the second capacitor；Exchange small letter
Two outputs of number current source are connected respectively on two electrodes of ecg amplifier input terminal；Non-essential resistance both ends are connected to the heart
On two electrodes of electric amplifier input terminal；The relaxor both ends are connected to two electrodes of ecg amplifier input terminal
On；The one of electrode of ecg amplifier connects rectifier, the ecg amplifier with first resistor by first capacitor
Another electrode connects rectifier with second resistance by the second capacitor；The rectifier and hysteresis comparator positive input terminal connect
It connects.
2. a kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System according to claim 1,
It is characterized in that: the frequency of oscillation expression formula of the relaxor are as follows:
WhereinCFor the capacitance of charging capacitor,V H For high level,V L For low level,I b For bias current.
3. a kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System according to claim 1,
Be characterized in that: the resistance value of the non-essential resistance is 10 M Ω.
4. a kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System according to claim 1,
Be characterized in that: the first resistor is equal with the resistance value of second resistance, and first capacitor is equal with the capacitance of the second capacitor.
5. a kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System according to claim 1,
Be characterized in that: the rectifier is current-mode nesting full-wave rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249434.5U CN209074605U (en) | 2018-08-04 | 2018-08-04 | A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249434.5U CN209074605U (en) | 2018-08-04 | 2018-08-04 | A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209074605U true CN209074605U (en) | 2019-07-09 |
Family
ID=67114218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821249434.5U Active CN209074605U (en) | 2018-08-04 | 2018-08-04 | A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209074605U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888262A (en) * | 2018-08-04 | 2018-11-27 | 福州大学 | Exchange lead-fail detector detection circuit and method for bipolar electrode ECG Gathering System |
| CN110638443A (en) * | 2019-11-07 | 2020-01-03 | 福州大学 | Electrocardiosignal reading circuit |
-
2018
- 2018-08-04 CN CN201821249434.5U patent/CN209074605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888262A (en) * | 2018-08-04 | 2018-11-27 | 福州大学 | Exchange lead-fail detector detection circuit and method for bipolar electrode ECG Gathering System |
| CN110638443A (en) * | 2019-11-07 | 2020-01-03 | 福州大学 | Electrocardiosignal reading circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209074605U (en) | A kind of exchange lead-fail detector detection circuit for bipolar electrode ECG Gathering System | |
| CN108888262A (en) | Exchange lead-fail detector detection circuit and method for bipolar electrode ECG Gathering System | |
| CN201968678U (en) | Electrocardio signal collecting unit and circuit thereof | |
| CN109633240B (en) | Power battery pack voltage detection method and device | |
| CN103675421A (en) | Power burr signal detection circuit and detection method thereof | |
| CN103799993A (en) | Detection system and detection method | |
| US20200196941A1 (en) | Sleep monitoring circuit and sleep monitoring apparatus | |
| CN205126227U (en) | A auto awake -up device for electrocardio equipment | |
| CN103197130A (en) | Power grid voltage ZCP (Zero Crossing Point) detecting method and device | |
| CN206041569U (en) | Novel electrocardio signal acquisition device electrode type charge device | |
| CN206497148U (en) | Isolated ac high voltage signal deteching circuit | |
| CN205091391U (en) | Direct current busbar voltage ripple detection device | |
| CN112986708A (en) | Method and device for judging whether bus capacitor needs to be overhauled or replaced | |
| CN102928706B (en) | A kind of interchange harvester and collecting method thereof | |
| CN105467214A (en) | Voltage phase acquisition method and apparatus thereof | |
| CN103353566A (en) | Cell in-place detection circuit for simulation circuit apparatus | |
| CN209281373U (en) | Direct current biasing for human body Collection equipment eliminates circuit | |
| CN110161394A (en) | A kind of insulation detecting method based on Unscented kalman filtering | |
| CN105974194B (en) | A kind of pair of shelf depreciation and the secondary device of temperature monitoring device monitoring | |
| CN206132865U (en) | Electric field detection circuitry around electrified insulator | |
| CN216696594U (en) | Battery discharge abnormity counting device | |
| CN211225913U (en) | Be applied to three-phase failure detection circuitry of elevator rescue device | |
| CN110649656A (en) | Grid-connected system of photovoltaic power station | |
| CN205921539U (en) | Adopt voltage stabilizing circuit who utilizes rectification of bridge type rectifier circuit of LC pi type filtering | |
| CN203396863U (en) | In-situ detection circuit for cell of analog circuit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |