CN208092463U - Medical instrument external detection device - Google Patents
Medical instrument external detection device Download PDFInfo
- Publication number
- CN208092463U CN208092463U CN201820554758.3U CN201820554758U CN208092463U CN 208092463 U CN208092463 U CN 208092463U CN 201820554758 U CN201820554758 U CN 201820554758U CN 208092463 U CN208092463 U CN 208092463U
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- CN
- China
- Prior art keywords
- detecting circuit
- power supply
- isolated location
- outer detecting
- control unit
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Abstract
The utility model is related to a kind of medical instrument external detection devices, including power supply, voltage isolated location, outer detecting circuit, signal isolation unit and control unit；The power output end connects the voltage isolated location input terminal, input voltage is isolated in the voltage isolated location, the voltage isolated location connects the outer detecting circuit, it powers for the outer detecting circuit, the outer detecting circuit is connect with the signal isolation unit communication, the signal isolation unit is bi-directionally connected with described control unit, and described control unit connects the power supply, controls the break-make of the power supply.The detection device is isolated by power supply and signal simultaneously, is avoided and is only carried out damaging caused by signal isolation is not isolated power supply.
Description
Technical field
The utility model is related to medical instruments fields, and in particular to a kind of medical instrument external detection device.
Background technology
Due to the particularity of medical instrument, the requirement to the safety of medical instrument, stability and accuracy is very high, and
Power supply unit used in medical instrument plays vital work in terms of the safety of medical instrument, stability and accuracy
With.
Many equipment have only carried out insulation blocking, power supply unit when inside carries out insulation blocking to signal transmission part at present
Point isolation is not taken, has impacting with high pressure by the way that the damage of internal circuit can be caused when external metal parts and conducting wire when external,
To influence safety, stability and the accuracy of medical instrument.
Utility model content
In order to overcome above-mentioned defect existing in the prior art, the purpose of this utility model to be to provide a kind of medical treatment of pressure resistance
Instrument external detection device.
To achieve the goals above, the utility model provides a kind of medical instrument external detection device, including power supply, electricity
Press isolated location, outer detecting circuit, signal isolation unit and control unit；
The power output end connects the voltage isolated location input terminal, the voltage isolated location to input voltage into
Row voltage stabilizing, isolation, the voltage isolated location connect the outer detecting circuit, power for the outer detecting circuit, described
Outer detecting circuit is connect with the signal isolation unit communication, the signal isolation unit and the two-way company of described control unit
It connects, described control unit connects the power supply, controls the break-make of the power supply.
The setting of voltage isolated location makes the detection device be provided with certain voltage endurance capability, it is therefore prevented that external high pressure impacts
Component inside medical instrument is damaged, which power supply and signal are isolated simultaneously, are avoided and are only carried out signal
Isolation damages caused by power supply is not isolated.In addition, when occurring abnormal without using external detection or external detection,
The power supply that control unit controls outer detecting circuit disconnects, and has achieved the purpose that energy saving and protection outer detecting circuit.
Further, wireless power transmission is used between the voltage isolated location and the outer detecting circuit, it is described
Outer detecting circuit is connect with the signal isolation unit wireless.This make outer detecting circuit and power supply, voltage isolated location,
Signal isolation unit and control unit are isolated entirely from, and while realizing voltage stabilizing isolation, drain conditions are prevented to occur
When, the damage caused by outer detecting circuit.
Further, the power supply is AC power, and the voltage isolated location is exchange isolated location；
The exchange isolated location includes transformer, bridge-type kenotron and AC-DC converter, and the AC power connects
The normally-closed contact of a relay is connect, the normally-closed contact connects the primary side of the transformer, and the relay coil is connected to institute
The relay control output end of control unit is stated, described control unit controls closure and the disconnection of the normally-closed contact, the change
The secondary side of depressor connects the bridge-type kenotron input terminal, and the bridge-type kenotron output end connects the AC-DC
The input terminal of converter, the AC-DC converter output end connect the outer detecting circuit input terminal.
The voltage isolated location is simple in structure, and production cost is low, and voltage isolation effect is good.
Further, the power supply is DC power supply, and the voltage isolated location is DC-DC isolated locations；
The DC-DC isolated locations include DC isolation modules, and the DC power output end connects the source electrode of a metal-oxide-semiconductor,
The power supply control output end of the grid connection described control unit of the metal-oxide-semiconductor, described control unit control leading for the metal-oxide-semiconductor
On and off is opened, the drain electrode connection DC isolation modules input terminal of the metal-oxide-semiconductor, described in the DC isolation modules output end connection
Outer detecting circuit input terminal.The voltage isolated location is simple in structure, and production cost is low, and voltage isolation effect is good.
Preferably, the signal isolation unit is photoelectrical coupler, and photoelectrical coupler is cheap, reduces and is produced into
This.
Further, further include with outer detecting circuit can the external detection point that connect of break-make, external detection point will detect
Signal feeds back to outer detecting circuit.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the principles of the present invention block diagram；
The circuit diagram that Fig. 2 is the power supply of the utility model when being AC power；
The circuit diagram that Fig. 3 is the power supply of the utility model when being DC power supply.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the company inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of above-mentioned term as the case may be.
A kind of medical instrument external detection device as shown in Figure 1, including power supply, voltage isolated location, external detection electricity
Road, signal isolation unit and control unit.
The power output end connects the voltage isolated location input terminal, the voltage isolated location to input voltage into
Row voltage stabilizing, isolation, the voltage isolated location connect the outer detecting circuit, power for the outer detecting circuit, described
Outer detecting circuit is connect with the signal isolation unit communication, the signal isolation unit and the two-way company of described control unit
It connects, described control unit connects the power supply, controls the break-make of the power supply.
The detection device further include with outer detecting circuit can the external detection point that connect of break-make, external detection point will detect
Signal feeds back to outer detecting circuit.
When work, control unit control power supply is connected first, is then formed after voltage isolated location carries out isolation conversion
New power supply is powered to outer detecting circuit, and normally rear control unit starts outer detecting circuit, external detection point to powered operation
Detection signal is fed back into outer detecting circuit, outer detecting circuit feeds back to control unit by signal is detected, since outside is examined
Slowdown monitoring circuit and the signal of control unit carry out signal transmission after isolation processing, can safely and effectively realize signal communication.In addition
On/off control is carried out by control unit, the deenergization when occurring abnormal without using external detection or external detection,
To achieve the purpose that energy saving and protection outer detecting circuit.The voltage range of insulation blocking makes according to isolated from power and signal isolation
Element is related, and the component pressure used is higher, and the voltage of insulation blocking is higher.Signal isolation unit is according to transmission signal
Difference takes different isolated locations, when such as transmitting digital signal, is isolated with photoelectrical coupler, when transmission of analogue signal,
Use precision photoelectric coupler, isolated amplifier, frequency pressure/voltage-frequency conversion+digital signal isolation, the isolation of AD/DA+ digital signals etc.
Isolation method is isolated.
Wherein, wireless power transmission may be used between the voltage isolated location and the outer detecting circuit, also may be used
It is powered to outer detecting circuit with wired connection, the outer detecting circuit can be wireless with the signal isolation unit,
It can also wired connection.When the voltage isolated location and outer detecting circuit wireless connection, the outer detecting circuit
When being connect with the signal isolation unit wireless, due to taking the mode being all isolated, entire external detection part to be equivalent to entirely
Portion's floating can seem in isolation voltage claimed range in one piece of insulator.
Power supply can select alternating current, can also select direct current.When power supply is AC power AC, voltage isolated location
To exchange isolated location.As shown in Fig. 2, exchange isolated location includes transformer T1, bridge-type kenotron D1 and AC-DC conversion
Device, the ends L of the AC power AC connect the first normally-closed contact of a relay, and the N-terminal of the AC power connects the relay
Second normally-closed contact of device, first normally-closed contact connect the first primary side terminals 1 of the transformer, and described second is normally closed
Second primary side terminals 2 of transformer described in contact portion, the relay coil are connected to the relay of described control unit
Control output end, described control unit control first normally-closed contact, the closure of the second normally-closed contact and disconnection, the transformation
First pair side terminals 3 of device connect the first bridge arm of the bridge-type kenotron, the second secondary side wiring of the transformer
The third bridge arm of the 4 connection bridge-type kenotron of end, the second bridge arm of the bridge-type kenotron connect the AC-DC
The four bridge legs of the ground terminal of converter, the bridge-type kenotron connect the input terminal of the AC-DC converter, the 4th bridge
Arm is also connected with the anode of the first capacitance C1, and the second bridge arm connects the cathode of the first capacitance C1, the AC-DC converter output
End connects the outer detecting circuit input terminal, and AC-DC converter output end is also connected with the anode of the second capacitance, the second capacitance
Cathode connects the ground terminal of AC-DC converter.When preparing to start external detection, control unit controls relay conducting, outside inspection
Slowdown monitoring circuit is ready to complete, beginning external detection, and after the completion of external detection, control unit controls relay and disconnects.
When power supply is DC power supply VCC1, the voltage isolated location is DC-DC isolated locations.As shown in figure 3, described
DC-DC isolated locations include DC isolation modules, and the DC power output end connects the source electrode of a metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor
Pole connects the power supply control output end of described control unit, and described control unit controls the conducting and disconnection of the metal-oxide-semiconductor, described
The drain electrode of metal-oxide-semiconductor connects the DC isolation modules input terminal, and the DC isolation modules output end connects the outer detecting circuit
Input terminal.When preparing to start external detection, control unit controls metal-oxide-semiconductor conducting, and outer detecting circuit is ready to complete, and starts outside
It detects, after the completion of external detection, control unit controls metal-oxide-semiconductor and disconnects.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (6)
1. a kind of medical instrument external detection device, which is characterized in that including power supply, voltage isolated location, outer detecting circuit,
Signal isolation unit and control unit；
The power output end connects the voltage isolated location input terminal, and the voltage isolated location carries out input voltage steady
Pressure, isolation, the voltage isolated location connect the outer detecting circuit, power for the outer detecting circuit, the outside
Detection circuit is connect with the signal isolation unit communication, and the signal isolation unit is bi-directionally connected with described control unit, institute
It states control unit and connects the power supply, control the break-make of the power supply.
2. medical instrument external detection device according to claim 1, which is characterized in that the voltage isolated location and institute
It states and uses wireless power transmission between outer detecting circuit, the outer detecting circuit connects with the signal isolation unit wireless
It connects.
3. medical instrument external detection device according to claim 1, which is characterized in that the power supply is AC power,
The voltage isolated location is exchange isolated location；
The exchange isolated location includes transformer, bridge-type kenotron and AC-DC converter, the AC power connection one
The normally-closed contact of relay, the normally-closed contact connect the primary side of the transformer, and the relay coil is connected to the control
The relay control output end of unit processed, described control unit control closure and the disconnection of the normally-closed contact, the transformer
Secondary side connect the bridge-type kenotron input terminal, the bridge-type kenotron output end connects the AC-DC conversions
The input terminal of device, the AC-DC converter output end connect the outer detecting circuit input terminal.
4. medical instrument external detection device according to claim 1, which is characterized in that the power supply is DC power supply,
The voltage isolated location is DC-DC isolated locations；
The DC-DC isolated locations include DC isolation modules, and the DC power output end connects the source electrode of a MOS pipes, described
Metal-oxide-semiconductor grid connection described control unit power supply control output end, described control unit control the metal-oxide-semiconductor conducting and
It disconnects, the drain electrode of the metal-oxide-semiconductor connects the DC isolation modules input terminal, and the DC isolation modules output end connects the outside
Detection circuit input terminal.
5. medical instrument external detection device according to claim 1, which is characterized in that the signal isolation unit is light
Electric coupler.
6. medical instrument external detection device according to claim 1, which is characterized in that further include and outer detecting circuit
Can break-make connection external detection point, external detection point by detect signal feed back to outer detecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820554758.3U CN208092463U (en) | 2018-04-18 | 2018-04-18 | Medical instrument external detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820554758.3U CN208092463U (en) | 2018-04-18 | 2018-04-18 | Medical instrument external detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208092463U true CN208092463U (en) | 2018-11-13 |
Family
ID=64055515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820554758.3U Expired - Fee Related CN208092463U (en) | 2018-04-18 | 2018-04-18 | Medical instrument external detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208092463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879987A (en) * | 2020-07-16 | 2020-11-03 | 北京瑞赛长城航空测控技术有限公司 | High-voltage-resistant isolated contact detection circuit |
-
2018
- 2018-04-18 CN CN201820554758.3U patent/CN208092463U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879987A (en) * | 2020-07-16 | 2020-11-03 | 北京瑞赛长城航空测控技术有限公司 | High-voltage-resistant isolated contact detection circuit |
| CN111879987B (en) * | 2020-07-16 | 2023-10-20 | 北京瑞赛长城航空测控技术有限公司 | High-voltage-resistant isolated contact detection circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181113 Termination date: 20190418 |