CN209059135U - A kind of light source and cold light source for endoscope system with malfunction monitoring function - Google Patents
A kind of light source and cold light source for endoscope system with malfunction monitoring function Download PDFInfo
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- CN209059135U CN209059135U CN201821135120.2U CN201821135120U CN209059135U CN 209059135 U CN209059135 U CN 209059135U CN 201821135120 U CN201821135120 U CN 201821135120U CN 209059135 U CN209059135 U CN 209059135U
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Abstract
The utility model discloses a kind of light source with malfunction monitoring function and cold light source for endoscope systems, light source includes light source body, driving circuit, further include the voltage sensor for measuring light source power supply voltage, measure the current sensor of light source power supply electric current and be arranged in light source driving circuit one of temperature sensor on circuit boards or any combination thereof；And control module.By the heat condition of circuit board where the supply voltage, supply current and driving circuit of real-time measurement light source, light source failure is found as early as possible.Cold light source for endoscope system further includes second light source using the light source with malfunction monitoring function as first light source, and setting is isolated with the driving circuit in first light source in second light source driving circuit.Setting is isolated with the driving circuit of first light source for second light source driving circuit, unaffected by each other, when first light source failure, is illuminated using second light source, so that endoscope extracts safely patient's body, is simultaneously emitted by warning message.
Description
Technical field
The utility model relates to a kind of light sources, more particularly to a kind of light source and endoscope with malfunction monitoring function
Cold light source system.
Background technique
With being constantly progressive for high-brightness LED technology, medical endoscope light source field using great power LED luminescence chip as
The cold light source for endoscope of core gradually starts to capture originally by the market of the dominance such as tungsten halogen lamp, hernia lamp.LED cold light source can
With the deficiency efficiently against endoscope illuminators such as existing tungsten halogen lamp, hernia lamps, with its brightness is high, colour temperature is suitable, calorific value is few,
The many merits such as the service life is long and the pro-gaze by users.It is small that the LED cold light source of the technology maturation theoretical service life can achieve 70,000
When more than, LED life control at present mainly controls the junction temperature of LED, so that its operating time can reach theoretical as far as possible
Service life.
The work ginseng such as record LED junction temperature, illuminance lamp is disclosed in the Chinese patent of Publication No. CN103479319A
Number, and avoided that contingency occurs because of LED light service life reason using the time according to the accumulation that running parameter calculates LED light
Technical solution.A kind of junction temperature of real-time measurement LED luminescence chip is disclosed in the Chinese patent of Publication No. CN103462578A,
And pass through the relation curve of junction temperature and service life, it controls semiconductor chilling plate and radiator fan and temperature control is carried out to LED luminescence chip
Technical solution.Above-mentioned two patents stress the service life for paying close attention to accurate monitoring LED light or the service life for extending LED light by temperature control, right
After LED light damage, how ensure that LED cold light source user safely pulled out safely fujinon electronic video endoscope from patient's body
Problem is not directed to, and for medical endoscope, gauge without light source output will jeopardize the life security of patient in operation, to LED
Control circuit monitoring and failover backup solve particularly significant.
Utility model content
The utility model aims to solve at least the technical problems existing in the prior art, especially innovatively proposes a kind of tool
The light source and cold light source for endoscope system of faulty monitoring function.
In order to realize the above-mentioned purpose of the utility model, first aspect according to the present utility model, the utility model is mentioned
A kind of light source with malfunction monitoring function is supplied, including the luminous driving circuit of light source body, driving light source body；
It further include the voltage sensor for measuring light source body supply voltage, the current sense for measuring light source body supply current
Device and be arranged in driving circuit one of temperature sensor on circuit boards or any combination thereof；
And the output signal based on voltage sensor and/or current sensor and/or temperature sensor judges that light source is
The control module of no failure；
The light source failure output end of the control module and the opening end of driving circuit connect.
The supply voltage, supply current and driving of above-mentioned technical proposal having the beneficial effect that through real-time measurement light source
The heat condition of circuit board where circuit, the temperature of circuit board is higher than control module where voltage, electric current or driving circuit
When interior preset value, control module thinks light source failure, can find light source failure as early as possible, close light source in time, avoids damaging remaining
Circuit.
It further include alarm unit in a kind of preferred embodiment of the utility model, the input terminal of the alarm unit
It is connect with the warning output end of control module.
Having the beneficial effect that for above-mentioned technical proposal provides warning message to user of service.
In order to realize the above-mentioned purpose of the utility model, the second aspect according to the present utility model, the utility model is mentioned
A kind of cold light source for endoscope system is supplied, with the light source of any of claims 1 or 2 with malfunction monitoring function for the first light
Source, further includes second light source, and setting is isolated with the driving circuit in first light source in second light source driving circuit；
The opening end of the second light source driving circuit and the second light source control terminal of control module connect.
Above-mentioned technical proposal has the beneficial effect that the cold light source system is provided with a second light source, and second light source drives
Setting is isolated with the driving circuit of first light source for dynamic circuit, unaffected by each other, when the light source and/or driving circuit of first light source
When failure causes first light source to fail, control module can star second light source and be illuminated, so that endoscope operator will be interior
Sight glass extracts safely patient's body, avoids damaging the case where causing gauge without light source to export, jeopardizing operation patients safety because of first light source.
In a kind of preferred embodiment of the utility model, further include the optically focused mould group that is successively set on main optical path and
In 45 degree of tilted-putted half reflection plates；
The emergent light of the first light source injects first plane of incidence of half reflection plate with horizontal direction, and the second light source goes out
It penetrates light and second plane of incidence of half reflection plate is injected with vertical direction, the emergent light of half reflection plate injects optically focused mould group with horizontal direction
The plane of incidence.
The having the beneficial effect that of above-mentioned technical proposal discloses a kind of light channel structure and second light source emergent light enters main optical path
Structure, the structure is simple, at low cost, the illumination switching of first light source easy to accomplish to second light source.
Detailed description of the invention
Fig. 1 is the system block diagram of cold light source system in one specific embodiment of the utility model；
Fig. 2 is LED drive board block diagram in one specific embodiment of the utility model.
Specific embodiment
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, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
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, the company being also possible to 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.
The utility model discloses a kind of light sources with malfunction monitoring function, as shown in Figure 1, including light source body, driving
The luminous driving circuit of dynamic light source body；
It further include the voltage sensor for measuring light source body supply voltage, the current sense for measuring light source body supply current
Device and be arranged in driving circuit one of temperature sensor on circuit boards or any combination thereof；
And the output signal based on voltage sensor and/or current sensor and/or temperature sensor judges that light source is
The control module of no failure；
The light source failure output end of control module and the opening end of driving circuit connect.
In the present embodiment, light source body is preferably but not limited to LED light；Driving circuit can drive for Switching Power Supply constant current
Circuit is preferably but not limited to select great power LEDs driving chip and its peripheral circuit such as LM3401 or MAX16818DENG,
The constant-current source Switching Power Supply driving of push-pull type topological structure, such as existing PWM controller chip UC2856, physical circuit knot can be selected
Structure reference chip design manual, this will not be repeated here.Circuit board where driving circuit is preferably but not limited to PCB printed board.
In the present embodiment, voltage sensor is preferably but not limited to as a difference amplifier, and the two of difference amplifier
A input terminal is connect with the both ends of light source body (such as anode and cathode of LED light emitting diode) respectively, difference amplifier it is defeated
Value is the voltage value of light source body out；Voltage sensor can also be isolating transformer, the isolating transformer just
Grade coil both ends are connect with the both ends of light source body (such as anode and cathode of LED light emitting diode) respectively, and the one of secondary coil
End ground connection, the voltage value of the other end is the voltage value of light source body.
In the present embodiment, current sensor is preferably but not limited to be serially connected in the small resistance in light source body current supply circuit
It is worth high precision sampling resistance, such as 100m Ω, the resistance of precision 1%, it is preferred that a difference is further accessed after sampling resistor
Divide amplification appliance, two input terminals connections of both ends difference difference amplifier of sampling resistor；Current sensor can also be current vortex
Sensor or Hall current sensor.
In the present embodiment, temperature sensor is preferably but not limited to temperature sensitive NTC resistance, be placed on circuit board heating compared with
Big position is preferably but not limited to be placed near driving chip, power inductance, transformer in light source driving circuit etc., preferably
, thermo-sensitive resistor is connected with a pull-up resistor, and one end of the resistance series network connects pull-up power supply, and other end ground connection is temperature sensitive
The voltage value and temperature proportional at resistance both ends.
In the present embodiment, control module is preferably but not limited to as MCU, 51 single-chip microcontrollers and other single-chip microcontrollers, such as type
Number be LPC1768 single-chip microcontroller.Its internal storage unit has preset lower threshold value on voltage, lower threshold value and high temperature threshold value on electric current,
By its internal A/D pin collection voltages sensor, the signal value of current sensor and temperature sensor output, if measure
The supply voltage of light source body is above and below voltage in threshold range, while the supply current of light source body lower threshold value model on electric current
In enclosing, and the temperature of circuit board is not up to high temperature threshold value where driving circuit, it is believed that the non-failure of light source, it is working properly；If measuring
Light source body supply voltage above and below voltage outside threshold range or the supply current of light source body lower threshold value on electric current
The temperature of circuit board reaches a high temperature threshold value outside range or where driving circuit, it is believed that power failure, the single-chip microcontroller of control module
The enable end of low level driving chip into driving circuit is exported by I/O interface, closes driving chip；Or control module
Single-chip microcontroller closes driving chip by the driving chip connection communication in serial ports between piece and driving circuit, such as I2C serial ports.Voltage
Rated operational voltage range and current margin on upper lower threshold value and the product manual of the upper and lower threshold reference light source body of electric current
The maximum functional environment temperature setting of setting, high temperature threshold value referenced drive chip or light source body, can also be according to driving chip
Junction temperature setting.
In a kind of application scenarios of present embodiment, control module includes first comparator, the second comparator, third ratio
Compared with device, the 4th comparator, the 5th comparator, the first reference power source, the second reference power source, third reference power source, the 4th with reference to electricity
Source, the 5th reference power source, the one or two input and door, the two or two input and door and three inputs and door；
Voltage sensor output and the positive input of first comparator connect, the negative input of first comparator with
The connection of first reference power source, first comparator output end are connect with the one or two input with the first input end of door；Voltage sensor
Output end is connect with the negative input of the second comparator, and the positive input of the second comparator is connect with the second reference power source,
Second comparator output terminal is connect with the one or two input with the second input terminal of door；One or two input is defeated with the output end of door and three
Enter and is connect with the first input end of door；
Current sensor output is connect with the positive input of third comparator, the negative input of third comparator with
The connection of third reference power source, third comparator output terminal are connect with the two or two input with the first input end of door；Current sensor
Output end is connect with the negative input of the 4th comparator, and the positive input of the 4th comparator is connect with the 4th reference power source,
4th comparator output terminal is connect with the two or two input with the second input terminal of door；Two or two input is defeated with the output end of door and three
Enter and is connect with the second input terminal of door；
Temperature sensor output end is connect with the negative input of the 5th comparator, the positive input of the 5th comparator with
The connection of 5th reference power source, the 5th comparator output terminal are connect with three inputs with the third input terminal of door；
Three inputs and the enable pin of driving chip in the output end and light source driving circuit of door (high level is effective, if
Low level is effective, a NOT gate need to be concatenated between the output end of door and the enable end in three inputs) connection.
The output voltage of first reference power source and the second reference power source can be distinguished on the product manual of reference light source ontology most
Small amount fixed working voltage and maximum rated operating voltage；The output voltage of third reference power source and the 4th reference power source can join respectively
Examine what minimum rated operational current and maximum rated operating current on the product manual of light source body were converted through over-current sensor
Voltage value；The output voltage of 5th reference power source can refer to the maximum functional environment temperature of the permission of driving chip or light source body
Spend the voltage value after temperature sensor is converted.First reference power source, the second reference power source, third reference power source, the 4th ginseng
It examines power supply and the voltage reference chip of TI company can be selected in the 5th reference power source, physical circuit is referring to corresponding chip handbook.
First comparator, the second comparator, third comparator, the 4th comparator, the 5th comparator can be selected LM324 or
LM358；One or two input can be selected 7408 or 7409 with door, the two or two input and door, and 74HC11D can be selected with door in three inputs.
It further include alarm unit, the input terminal of alarm unit and control in a kind of preferred embodiment of the utility model
The warning output end of molding block connects.
In the present embodiment, alarm unit is preferably but not limited to buzzer, red LED lamp, display etc..
The invention also discloses a kind of cold light source for endoscope systems, as shown in Fig. 2, having malfunction monitoring function with above-mentioned
The light source of energy is first light source, further includes second light source, second light source driving circuit is isolated with the driving circuit in first light source
Setting；
The opening end of second light source driving circuit and the second light source control terminal of control module connect.
In the present embodiment, second light source ontology is preferably but not limited to LED light, distinguishes convenient for user, can be selected two kinds
The LED light of different colours, if first light source is white, second light source is purple or blue.Second light source driving circuit can be open
Powered-down source constant-current drive circuit, be preferably but not limited to select the great power LEDs driving chip such as LM3401 or MAX16818DENG with
And its peripheral circuit, the constant-current source Switching Power Supply driving of push-pull type topological structure, such as existing PWM controller chip also can be selected
UC2856, particular circuit configurations reference chip design manual, this will not be repeated here.
In the present embodiment, the driving circuit of first light source and the separable setting of second light source driving circuit are same
On circuit board, it is preferred that be isolated by devices such as shielding cases；Or driving circuit and the second light source driving of first light source
Circuit is separately positioned on different circuit boards, in this way convenient for isolation.When control module is single-chip microcontroller or MCU, it can be managed by I/O
Foot is connect with the driving chip enable end (in the effective situation of driving chip enable end high level) of second light source driving circuit,
Or pass through other serial ports and above-mentioned driving chip connection communication；Or three input with the output end of door and the input terminal of a NOT gate
It connects (in the effective situation of driving chip enable end low level), the driving chip of non-gate output terminal and second light source driving circuit
Enable end connection.
It further include the optically focused mould group being arranged on main optical path in a kind of preferred embodiment of the utility model, first
The emergent light of light source injects the plane of incidence of optically focused mould group with horizontal direction；And when first light source failure, mobile second light source
Transmission component to optically focused mould group input path；
Transmission component includes the connector of motor and connection second light source and machine shaft, the motor control terminal of control module
It is electrically connected with the driving end of motor.
In the present embodiment, control module is preferably single-chip microcontroller or MCU.Motor is preferably but not limited to as shaft be spiral shell
The stepping straight-line displacement motor of bar, electrode control terminal pass through serial ports and control module connection communication；Connector is provided with and spiral shell
The internal thread hole of bar cooperation, is additionally provided with the connecting hole connecting with second light source, the shaft of motor is vertical, when first light source is not damaged
Bad when, second light source is below optically focused mould group input path, and when first light source damage, control module exports number by serial ports
Amount control motor operating is moved along a straight line upwards with follower link and the second light source being fixed on connector to poly- by screw rod
In optical mode group input path.The movement step-wise displacement amount of stepper motor can be set to control after experimental study phase authentication is good
In one memory of inside modules.
In a kind of preferred embodiment of the utility model, as shown in Figure 1, further including being successively set on main optical path
Optically focused mould group and be in 45 degree of tilted-putted half reflection plates；
The emergent light of first light source injects first plane of incidence of half reflection plate with horizontal direction, and the emergent light of second light source is with perpendicular
Histogram injects the plane of incidence of optically focused mould group with horizontal direction to second plane of incidence of half reflection plate, the emergent light of half reflection plate is injected.
In the present embodiment, first plane of incidence of reflecting plate is to reflect or transmit the plane of incidence, and the second of reflecting plate is incident
Face is reflecting surface, and the emergent ray of first light source becomes directional light after reflecting plate reflects or transmits and injects optically focused mould group, the
The emergent ray of two light sources becomes directional light after baffle reflection and injects optically focused mould group.Reflecting plate can be LED refraction-reflection
Lens.
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
Stating 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 embodiment or examples.
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:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (4)
1. a kind of light source with malfunction monitoring function, which is characterized in that including the luminous drive of light source body, driving light source body
Dynamic circuit；
Further include measure light source body supply voltage voltage sensor, measure light source body supply current current sensor and
Be arranged in driving circuit one of temperature sensor on circuit boards or any combination thereof；
And the output signal based on voltage sensor and/or current sensor and/or temperature sensor judges whether light source is former
The control module of barrier；
The light source failure output end of the control module and the opening end of driving circuit connect.
2. as described in claim 1 with the light source of malfunction monitoring function, which is characterized in that it further include alarm unit, it is described
The input terminal of alarm unit and the warning output end of control module connect.
3. a kind of cold light source for endoscope system, which is characterized in that with of any of claims 1 or 2 with malfunction monitoring function
Light source is first light source, further includes second light source, and setting is isolated with the driving circuit in first light source in second light source driving circuit；
The opening end of the second light source driving circuit and the second light source control terminal of control module connect.
4. cold light source for endoscope system as claimed in claim 3, which is characterized in that further include being successively set on main optical path
Optically focused mould group and be in 45 degree of tilted-putted half reflection plates；
The emergent light of the first light source injects first plane of incidence of half reflection plate, the emergent light of the second light source with horizontal direction
Second plane of incidence of half reflection plate is injected with vertical direction, the emergent light of half reflection plate injects the incidence of optically focused mould group with horizontal direction
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821135120.2U CN209059135U (en) | 2018-07-17 | 2018-07-17 | A kind of light source and cold light source for endoscope system with malfunction monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821135120.2U CN209059135U (en) | 2018-07-17 | 2018-07-17 | A kind of light source and cold light source for endoscope system with malfunction monitoring function |
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| Publication Number | Publication Date |
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| CN209059135U true CN209059135U (en) | 2019-07-05 |
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ID=67089503
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| CN201821135120.2U Active CN209059135U (en) | 2018-07-17 | 2018-07-17 | A kind of light source and cold light source for endoscope system with malfunction monitoring function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866685A (en) * | 2020-06-30 | 2021-12-31 | 深圳市汉森软件有限公司 | Device, method, equipment and medium for electrifying detection of nozzle control plate |
-
2018
- 2018-07-17 CN CN201821135120.2U patent/CN209059135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866685A (en) * | 2020-06-30 | 2021-12-31 | 深圳市汉森软件有限公司 | Device, method, equipment and medium for electrifying detection of nozzle control plate |
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Effective date of registration: 20211112 Address after: 401120 1-1, 2-1, 3-1, building 5, No. 18, Cuiping Lane 2, Huixing street, Yubei District, Chongqing Patentee after: Chongqing Jinshan Medical Technology Research Institute Co., Ltd Address before: 401120 1 office buildings, Jinshan International Industrial City, 18 of Nei sang Road, Hui Xing street, Yubei District, Chongqing. Patentee before: Chongqing Jinshan Medical Equipment Co., Ltd |