CN206618678U - Spectrophotometer - Google Patents

Abstract

The utility model discloses a kind of spectrophotometer, staff is solved easily to forget to carrying out the problem of cleaning is safeguarded to spectrophotometer, its drip irrigation device is, including the time-delay mechanism for exporting time delayed signal, time-delay mechanism is coupled to the control device of reception delay signal and output control signal and control device is coupled to receive control signal and suggestion device in response to control signal to be pointed out, spectrophotometer of the present utility model, by time-delay mechanism be configured so that export time delayed signal after the time set by delay, and then control device in response to the time delayed signal to be controlled to suggestion device, start suggestion device to remind staff, the spectrophotometer is needed to be serviced, avoid being continuing with and cause to measure inaccurate situation.

Description

Spectrophotometer

Technical field

The utility model is related to spectral instrument, more particularly to spectrophotometer.

Background technology

A kind of ultraviolet specrophotometer disclosed in notification number CN205538660U, its mainly comprising spectrophotometer shell, Analysis area, operator control panel, switch；The inside of spectrophotometer shell is provided with analysis area, and the top of spectrophotometer shell is provided with behaviour Work shields, and the side of spectrophotometer shell is provided with switch；It also includes cuvette holder；Cuvette holder by dividing plate point It is set to idle area and operating space is constituted；It is provided with operating space between support frame, support frame and is provided with Adsorption of Filter Paper frame；Adsorption of Filter Paper frame The side of top two on support frame with being equipped with fixed via, and Adsorption of Filter Paper frame passes through the clip on fixed strip and fixed via phase It is fixedly connected.While support being provided for the cuvette used in test, additionally it is possible to by the liquid wiped clean on cuvette, Improve testing efficiency.

Wherein spectrophotometer is after using some cycles, and inside can accumulate a certain amount of dust, it is necessary to by maintenance engineering Teacher periodically turns on instrument outer cover in the case where engineer instructs and carries out dedusting work to inside, while by the radiator of each heater element Re-secure, the sealed window of optical box cleaned, light path calibrated if necessary, to mechanical part carry out cleaning and Necessary lubrication, finally, restores to the original state, then carries out some necessary detection, adjustment and records；And staff often forgets This very important process, the cleaning being timed, so that it is inaccurate to cause spectrophotometer to detect in use, very To there is situation about damaging, so spectrophotometer used at present has certain room for improvement.

Utility model content

The purpose of this utility model is to provide a kind of specific spectrophotometer for reminding engineer to safeguard periodic maintenance.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of spectrophotometer, including prolonged for exporting the time-delay mechanism of time delayed signal, being coupled to time-delay mechanism with receiving When signal and output control signal control device and be coupled to control device with receive control signal and in response to control believe Suggestion device number to be pointed out.

Using such scheme, being configured so that of time-delay mechanism exports time delayed signal after the time set by delay, enters And control device in response to the time delayed signal to be controlled to suggestion device, start suggestion device to remind staff, should Spectrophotometer is needed to be serviced, it is to avoid is continuing with and is caused to measure inaccurate situation, improves making for spectrophotometer With accuracy, the time that staff forgets to safeguard spectrophotometer is prevented effectively from.

Preferably, the first delay circuit that the time-delay mechanism includes being used to export the first time delayed signal is exported with being used for Second delay circuit of the second time delayed signal, the delay time corresponding to first time delayed signal is less than the second time delayed signal institute Corresponding delay time, and the control device includes being coupled to the first delay circuit receiving the first time delayed signal and exporting the The first control circuit of one control signal and be coupled to the second delay circuit with receive the second time delayed signal and export second control The second control circuit of signal processed, the suggestion device be respectively coupled to first control circuit and second control circuit and in response to First control signal or the second control signal are to realize startup.

Using such scheme, the delay of the delay circuit of the delay circuit of two gears, i.e., two is provided with time-delay mechanism Time differs, to allow staff to be configured according to actual conditions to be reminded after the set time, Setting control device respectively simultaneously corresponding with two delay circuits so that the first delay circuit is separated with the second delay circuit Be controlled, can effectively avoid share it is same control circuit and the control circuit occur damage occur two kinds delay when Between function situation about can not use, improve overall practicality.

Preferably, also including the switching device for being used to switch the first delay circuit and the second delay circuit.

Using such scheme, staff can be according to actual conditions with logical to the first delay circuit and the second delay circuit Cross switching device to switch over, raising can moral conduct so that overall design is more reasonable, convenient use.

Preferably, the switching device includes being connected to the current supply circuit of the first delay circuit controlling the first delay electricity The first controlling switch and be connected to what the current supply circuit of the second delay circuit was opened and closed to control the second delay circuit that road is opened and closed Second controlling switch.

Using such scheme, the first controlling switch controls the first delay circuit and the second controlling switch to control the second delay Circuit, overall control mode is simply and readily implemented, with low cost, when needing to use the first delay circuit, it is only necessary to close Close the first controlling switch and open the second controlling switch, when needing to use the second delay circuit, to needing opening first Controlling switch and close the second controlling switch, it is easy to use and reliable.

Preferably, the switching device include detection local environment in dust concentration situation and export detection signal ash Dirt detecting element, be preset with benchmark value signal and by benchmark value signal with detection signal be compared to each other to export the ratio of comparison signal Compared with circuit, it is coupled to comparison circuit and in response to comparison signal to be switched over to the first delay circuit and the second delay circuit Drive circuit, in response to comparison signal and for keeping after switching the latching circuit of state and for resetting state after switching Reset circuit.

Using such scheme, for the dust concentration situation under varying environment with to being using the first delay circuit or adopting Switched over the second delay circuit, the control of automation is realized, while the suitable cycle can be selected according to actual conditions Spectrophotometer is safeguarded so that overall design is more reasonable, facilitates staff to be operated；Examined by dust Survey element to detect the dust concentration situation in local environment, and be compared according to set comparison circuit, if greatly In benchmark value signal, then illustrate that the dust concentration of local environment is larger, it is necessary to just be cleared up once using the shorter cycle, if being less than Benchmark value signal, then the dust concentration of local environment is smaller, can be cleared up under the longer cycle.

Preferably, the switching device also includes being connected to the current supply circuit of dust detecting element to control dust to detect The detection switch that element is opened and closed.

Using such scheme, detection switch is controlled to dust detecting element, due to the environment residing for spectrophotometer It is generally indoor, and indoor dust concentration with it is residing geographically relevant, and generally, indoor dust concentration will not be sent out Very big change is given birth to, therefore only needs to be adjusted with the time to the cycle after full maintenance is completed, it is real without carrying out When detect, effectively reduce energy consumption.

Preferably, being also coupled to the adjuster for adjusting benchmark value signal on the comparison circuit.

Using such scheme, effectively can voluntarily it be adjusted according to the situation of different regions using adjuster so that Overall design is more reasonable, using enhanced convenience, if the time for the setting of feeling to dispatch from the factory is problematic, freely sets Put.

Preferably, the adjuster is slide rheostat.

Using such scheme, the regulation of slide rheostat is more convenient and simple in construction, easily implements, with low cost.

Preferably, the suggestion device is visual indicator and/or sound indicator.

Using such scheme, visual indicator is pointed out staff with realizing by light, and sound instruction Device is then pointed out staff by sound, multiple combinations can be now realized according to different requirements, i.e., only Instruction is carried out using visual indicator to be indicated only with sound indicator, it can in addition contain use sound Indicator is indicated with the mode that visual indicator is bonded with each other so that it is more reasonable to set, using enhanced convenience.

Preferably, the suggestion device is strobelight indicator.

Using such scheme, the flicker of light can be improved using the significance during light cue, allow staff What is be more prone to gets corresponding information, to know the current state in which of spectrophotometer, if be to need to be serviced.

In summary, the utility model has the advantages that：Pass through being configured so that in delay institute for time-delay mechanism Export time delayed signal after the time of setting, so control device in response to the time delayed signal to be controlled to suggestion device, open Dynamic suggestion device is to remind staff, and the spectrophotometer is needed to be serviced, it is to avoid is continuing with and causes measurement inaccurate True situation.

Brief description of the drawings

Fig. 1 is the circuit theory diagrams of the present embodiment one；

Fig. 2 is the circuit theory diagrams of the present embodiment two；

Fig. 3 is the circuit theory diagrams of the present embodiment three.

In figure：1st, time-delay mechanism；11st, the first delay circuit；12nd, the second delay circuit；2nd, control device；21st, the first control Circuit processed；22nd, second control circuit；3rd, suggestion device；4th, switching device；41st, comparison circuit；42nd, drive circuit；43rd, self-locking Circuit；44th, reset circuit.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Embodiment one, as shown in figure 1, a kind of disclosed spectrophotometer, including filled for the delay for exporting time delayed signal 1 is put, time-delay mechanism 1 is coupled to reception delay signal and the control device of output control signal 2 and is coupled to control device 2 To receive control signal and suggestion device 3 in response to control signal to be pointed out.

Time-delay mechanism 1 is 555 delay circuits, and the controlled end of time-delay mechanism 1 is coupled to switch K1 to export time delayed signal, The controlled end of 555 delay circuits is power end, therefore switch K1 is connected between power supply and 555 chips, when switching K1 closures, then 555 delay circuit electric energy are provided, after switching on power, because electric capacity C1 is charged, that is, there is electric current and potential difference, so that Ensure that the crus secunda and the 6th pin of 555 chips are in high level, now the 3rd pin output low level of 555 chips, with electric capacity Cl chargings until charging complete, due to electric capacity it is fully charged after do not recharge, will by electric capacity C1 therefore in the absence of electric current and current potential Dc source is obstructed so that the current potential of the crus secunda of 555 chips and the 6th pin becomes low level, the telecommunications of output end output Number overturn, i.e. the signal of output end output is changed into high level from low level, and is always maintained at down.Diode VD is for electricity Electric capacity C2 discharges and set after the power-off of source.

Control device 2 includes the triode Q1 and relay KM1 of NPN type, and triode Q1 base stage is connected to time-delay mechanism 1 Output end, triode Q1 colelctor electrode is connected to relay KM1 coil, grounded emitter, relay KM1 normally opened contact Suggestion device 3 is connected to control it to open and close.

Suggestion device 3 is visual indicator and/or sound indicator, and visual indicator can use indicator lamp, and sound Indicator can use suggestion device 3 in buzzer, the present embodiment to be preferred to use for strobelight indicator.

Strobelight indicator includes oscillator, the triode Q2 and indicator lamp LED1 of NPN type, the controlled terminal coupling of oscillator Power supply is connected after the normally opened contact for being connected to relay KM1, the output end of oscillator is coupled to triode Q2 base stage, and controls three Pole pipe Q2 break-make, triode Q2 colelctor electrode, which is connected to after indicator lamp LED1, connects power supply, triode Q2 grounded emitter, When relay KM1 coil obtains electric, control relay KM1 normally opened contact closure so that control oscillator operation exports one Control signal, control signal is square wave, control triode Q2 alternating break-makes, to cause indicator lamp LED1 discontinuity to indicate, is realized The function of instruction.

Specific work process is as follows：

When switch K1 closures, to cause time-delay mechanism 1 to start, that is, one high level of output after the set time that is delayed Time delayed signal to triode Q1 base stage, triode Q1 conducting so that relay KM1 coil obtains electric, and relay KM1's is normally opened The closing of contact, starts suggestion device 3 to realize instruction.

Embodiment two, as shown in Fig. 2 a kind of disclosed spectrophotometer, including filled for the delay for exporting time delayed signal 1 is put, time-delay mechanism 1 is coupled to reception delay signal and the control device of output control signal 2 and is coupled to control device 2 To receive control signal and suggestion device 3 in response to control signal to be pointed out.

Time-delay mechanism 1 includes being used for the first delay circuit 11 for exporting the first time delayed signal with believing for exporting the second delay Number the second delay circuit 12, when delay time corresponding to the first time delayed signal is less than the delay corresponding to the second time delayed signal Between, and control device 2 includes being coupled to the first delay circuit 11 receiving the first time delayed signal and exporting the first control signal First control circuit 21 and it is coupled to second delay circuit 12 to receive the second time delayed signal and export the second control signal Second control circuit 22, suggestion device 3 is respectively coupled to first control circuit 21 with second control circuit 22 and in response to first Control signal or the second control signal are to realize startup.

Spectrophotometer also includes the switching device 4 for being used to switch the first delay circuit 11 and the second delay circuit 12.Cut The first control that changing device 4 includes being connected to the current supply circuit of the first delay circuit 11 to control the first delay circuit 11 to open and close is opened Close K2 and be connected to the current supply circuit of the second delay circuit 12 to control the second controlling switch that the second delay circuit 12 is opened and closed K3。

First delay circuit 11 is 555 delay circuits, and the controlled end of the first delay circuit 11 is coupled to the first controlling switch K2 is to export the first time delayed signal, and the controlled end of 555 delay circuits is power end, thus the first controlling switch K2 be connected to power supply with Between 555 chips, when the first controlling switch K2 is closed, then 555 delay circuit electric energy are provided, after switching on power, due to electricity Hold C11 to be charged, that is, there is electric current and potential difference, so that ensure that the crus secunda and the 6th pin of 555 chips are in high level, Now the 3rd pin output low level of 555 chips, as electric capacity Cl1 chargings are until charging complete, due to electric capacity Cl1 it is fully charged after Do not recharge, therefore in the absence of electric current and current potential, obstructed dc source by electric capacity C11 so that the second of 555 chips The current potential of pin and the 6th pin becomes low level, and the electric signal of output end output is overturn, i.e., the signal of output end output is by low Level is changed into high level, and is always maintained at down.Diode VD1 is set for electric capacity C12 electric discharges after power cut-off.

First control circuit 21 includes the triode Q4 and relay KM4 of NPN type, and triode Q4 base stage is connected to first The output end of delay circuit 11, triode Q4 colelctor electrode is connected to relay KM4 coil, grounded emitter, relay KM4 Normally opened contact suggestion device 3 is connected to control it to open and close.

Second delay circuit 12 is 555 delay circuits, and the controlled end of the second delay circuit 12 is coupled to the second controlling switch K3 is to export the second time delayed signal, and the controlled end of 555 delay circuits is power end, thus the second controlling switch K3 be connected to power supply with Between 555 chips, when the second controlling switch K3 is closed, then 555 delay circuit electric energy are provided, after switching on power, due to electricity Hold C21 to be charged, that is, there is electric current and potential difference, so that ensure that the crus secunda and the 6th pin of 555 chips are in high level, Now the 3rd pin output low level of 555 chips, as electric capacity C21 chargings are until charging complete, due to electric capacity C21 it is fully charged after Do not recharge, therefore in the absence of electric current and current potential, obstructed dc source by electric capacity C21 so that the second of 555 chips The current potential of pin and the 6th pin becomes low level, and the electric signal of output end output is overturn, i.e., the signal of output end output is by low Level is changed into high level, and is always maintained at down.Diode VD2 is set for electric capacity C22 electric discharges after power cut-off.

Second control circuit 22 includes the triode Q5 and relay KM5 of NPN type, and triode Q5 base stage is connected to second The output end of delay circuit 12, triode Q5 colelctor electrode is connected to relay KM5 coil, grounded emitter, relay KM5 Normally opened contact relay KM4 normally opened contact is connected to control suggestion device 3 to open and close.

Suggestion device 3 is visual indicator and/or sound indicator, and visual indicator can use indicator lamp, and sound Indicator can use suggestion device 3 in buzzer, the present embodiment to be preferred to use for strobelight indicator.

Strobelight indicator includes oscillator, the triode Q2 and indicator lamp LED1 of NPN type, and relay KM4's is normally opened The controlled terminal of oscillator, the output end coupling of oscillator are connected to after contact and relay KM5 normally opened contact are connected with each other In triode Q2 base stage, and triode Q2 break-make is controlled, triode Q2 colelctor electrode, which is connected to after indicator lamp LED1, to be connected Power supply, triode Q2 grounded emitter, when relay KM1 coil obtains electric, control relay KM1 normally opened contact is closed, So that control oscillator operation, exports a control signal, control signal is square wave, control triode Q2 alternating break-makes, so that Obtain indicator lamp LED1 discontinuity to indicate, realize the function of indicating.

Specific work process is as follows：

When needing to use the delay time set by the first delay circuit 11, then by closing the first controlling switch K2, The first controlling switch K2 is opened, to cause the first delay circuit 11 to start, that is, a high electricity is exported after the set time that is delayed The first flat time delayed signal to triode Q4 base stage, triode Q4 conducting so that relay KM4 coil obtains electric, relay KM4 normally opened contact closure, starts suggestion device 3 to realize instruction；When needing to use prolonging set by the second delay circuit 12 When the time when, then by close the second controlling switch K3, open the second controlling switch K3, to cause the second delay circuit 12 to open Dynamic, that is, the second time delayed signal of one high level of output is to triode Q5 base stage, triode Q5 after the set time that is delayed Conducting so that relay KM5 coil obtains electric, relay KM5 normally opened contact closure, starts suggestion device 3 to realize instruction.

Embodiment three, as shown in figure 3, being cutting in the replacement of switching device 4, the present embodiment with the difference of embodiment two Changing device 4 include detection local environment in dust concentration situation and export detection signal dust detecting element, be preset with benchmark Value signal and by benchmark value signal with detection signal be compared to each other to export the comparison circuit 41 of comparison signal, be coupled to and compared electric Road 41 and drive circuit 42, sound in response to comparison signal to be switched over to the first delay circuit 11 and the second delay circuit 12 Should be in the latching circuit 43 of state after comparison signal and for keeping switching and the reset circuit for resetting state after switching 44。

Dust detecting element is preferred to use dust sensor, and the principle of dust sensor is as follows：Particulate and molecule are in light Irradiation is lower to produce the scattering phenomenon of light, and this is simultaneously, also absorbs the energy of partial illumination light.When a branch of collimated monochromatic ligth is incident During to tested particle field, it can be influenceed by scattering and absorbing around particle, light intensity will be attenuated.Just can thus try to achieve into Penetrate relative attenuation rate of the light by concentration field to be measured.And the size of relative attenuation rate substantially can linear response field dust to be measured Relative concentration.The size of light intensity and electric signal power through opto-electronic conversion are directly proportional, can be in the hope of phase by measuring electric signal To attenuation rate.Dust sensor can export detection signal after completing detection.

Comparison circuit 41 is preferably the comparator of LM393A models, and the in-phase end of comparison circuit 41 is connected with dust sensor To receive detection signal, end of oppisite phase is connected with default benchmark value signal, and benchmark value signal is set by resistance R21 with resistance R22 Put, the detection signal detected and benchmark value signal are compared to each other, and export comparison signal, when detection signal is more than a reference value Signal, exports the comparison signal of high level, when detection signal is less than benchmark value signal, exports low level comparison signal.Compare The adjuster for adjusting benchmark value signal is also coupled on circuit 41.Adjuster is slide rheostat, and resistance R22 is set and slided Dynamic rheostat.

Drive circuit 42 includes the triode Q3 and relay KM3 of NPN type, and triode Q3 base stage is connected to comparison circuit 41 output end, triode Q3 colelctor electrode is connected to relay KM3 coil, and grounded emitter, the normally closed of relay KM3 is touched Point is connected to the controlled end of the first delay circuit 11, and relay KM3 normally opened contact be connected to the second delay circuit 12 by Control end.

The normally opened contact that latching circuit 43 is preferred to use relay KM3 completes the normally opened tactile of auto-lock function, i.e. relay KM3 Point is connected to triode Q3 colelctor electrode and the two ends of emitter stage, when relay KM3 coil obtains electric so that relay KM3's Normally opened contact is closed to realize self-locking, and now relay KM3 coil, which is obtained, whether electric is no longer controlled by triode Q3.

Reset circuit 44 is preferably normally closed button SB1, and normally closed button SB1 is connected to relay KM3 current supply circuit, if needing Reset function is completed, then directly opens normally closed button SB1, that is, causes relay KM3 coil losing electricity, now relay KM3 Normally opened contact disconnect so that relay KM3 coil whether electric be controlled by triode Q3 again.

Switching device 4 also includes being connected to the current supply circuit of dust detecting element controlling the inspection that dust detecting element is opened and closed Slowdown monitoring switch K4.

Specific work process is as follows：

After cleaning completes spectrophotometer, occlusion detection switch K4 so that the current supply circuit of dust sensor turn on Detection is realized, can disconnection detection switch K4 after the completion of detection.

Comparison circuit 41 will detect that signal is compared to each other with benchmark value signal, if detection signal is less than benchmark value signal, say The bright less state of now dust concentration, is safeguarded again after the cycle that can use overlength, the output low level of comparison circuit 41 To triode Q3, triode Q3 is not turned on so that relay KM3 coil must not be electric, and relay KM3 normally opened contact is opened, Normally-closed contact is closed；So as to start the first delay circuit 11, that is, the first of a high level is exported after the set time that is delayed Time delayed signal to triode Q4 base stage, triode Q4 conducting so that relay KM4 coil obtains electric, and relay KM4's is normally opened The closing of contact, starts suggestion device 3 to realize instruction.

If detecting, signal is more than benchmark value signal, illustrates the now larger state of dust concentration, then using the shorter cycle After will be safeguarded, comparison circuit 41 export high level to triode Q3, triode Q3 turn on so that relay KM3 line Enclose electric, relay KM3 normally opened contact closure, normally-closed contact is opened；So as to start the second delay circuit 12, that is, it is delayed set The second time delayed signal of a high level is exported after the fixed time to triode Q5 base stage, triode Q5 conductings so that relay Device KM5 coil obtains electric, relay KM5 normally opened contact closure, starts suggestion device 3 to realize instruction.

Claims (10)

1. a kind of spectrophotometer, it is characterized in that：Including the time-delay mechanism (1) for exporting time delayed signal, it is coupled to delay dress (1) is put with reception delay signal and the control device of output control signal (2) and control device (2) is coupled to receive control Signal and the suggestion device (3) in response to control signal to be pointed out.

2. spectrophotometer according to claim 1, it is characterized in that：The time-delay mechanism (1) includes being used to export first The first delay circuit (11) of time delayed signal and the second delay circuit (12) for exporting the second time delayed signal, described first prolongs When signal corresponding to delay time be less than delay time corresponding to the second time delayed signal, and the control device (2) includes The first delay circuit (11) is coupled to receive the first time delayed signal and export the first control circuit (21) of the first control signal And be coupled to the second delay circuit (12) to receive the second time delayed signal and export the second control circuit of the second control signal (22), the suggestion device (3) is respectively coupled to first control circuit (21) with second control circuit (22) and in response to first Control signal or the second control signal are to realize startup.

3. spectrophotometer according to claim 2, it is characterized in that：Also include be used for switch the first delay circuit (11) with The switching device (4) of second delay circuit (12).

4. spectrophotometer according to claim 3, it is characterized in that：The switching device (4) is prolonged including being connected to first When circuit (11) current supply circuit to control the first controlling switch and be connected to second and prolong that the first delay circuit (11) is opened and closed When circuit (12) current supply circuit with control the second delay circuit (12) open and close the second controlling switch.

5. spectrophotometer according to claim 3, it is characterized in that：The switching device (4) includes detection local environment Middle dust concentration situation simultaneously exports the dust detecting element of detection signal, is preset with benchmark value signal and by benchmark value signal with examining Signal is surveyed to be compared to each other to export the comparison circuit (41) of comparison signal, be coupled to comparison circuit (41) and in response to comparison signal With the first delay circuit (11) and the second delay circuit (12) are switched over drive circuit (42), in response to comparison signal and Reset circuit (44) for the latching circuit (43) of state after holding switching and for resetting state after switching.

6. spectrophotometer according to claim 5, it is characterized in that：The switching device (4) also includes being connected to dust The current supply circuit of detecting element with control dust detecting element open and close detection switch.

7. spectrophotometer according to claim 5, it is characterized in that：It has been also coupled to be used to adjust on the comparison circuit (41) Save the adjuster of benchmark value signal.

8. spectrophotometer according to claim 7, it is characterized in that：The adjuster is slide rheostat.

9. spectrophotometer according to claim 1, it is characterized in that：The suggestion device (3) be visual indicator and/or Sound indicator.

10. the spectrophotometer according to claim 1 or 9, it is characterized in that：The suggestion device (3) refers to for strobelight Show device.