CN2767997Y

CN2767997Y - Novel photoelectric sensor

Info

Publication number: CN2767997Y
Application number: CN 03228362
Authority: CN
Inventors: 甘煜华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-22
Filing date: 2003-01-22
Publication date: 2006-03-29
Anticipated expiration: 2013-01-22

Abstract

The utility model discloses a novel photoelectric sensor, which comprises a light source, a sampling tank, a light sensitive element and a light shielding cover, wherein the position on the upper part of the sensor of the utility model corresponding to the light shielding cover is provided with a detector for the position of the cover. The utility model effectively avoids false operation, increases the precision and the reliability of the measurement by the sensor, and can be used for the fields of medical detection, etc.

Description

The novel photoelectric sensor

Technical field

The utility model relates to a kind of sensor, is a kind of measurement loading amount of utilizing photovalve inspected object light transmission capacity.The occasion that needing in the clinical and blood product industry to can be used for some composition to blood, body fluid, soup detect, control or handle automatically.Become requisite critical component in the medicine equipments such as sampled plasma machine, blood cell collection machine, dialysis apparatus, autoblood recovery instrument and blood constituent separometer.This technology also can be used for other field.

Background technology

People's blood is by blood plasma, blood platelet, red blood cell and candidate stem cell ... Deng becoming to be grouped into, different purposes is arranged in clinical, need to handle respectively.So along with science and technology development, full-automatic blood component harvester, autoblood recovery instrument, dialysis apparatus ... succeed in developing in succession Deng automatic processing equipment, wherein photoelectric sensor is the critical component that guarantees these equipment operate as normal.

In the prior art, for realizing detection to blood, body fluid and soup, the transparent conduit that fluid to be measured need will be housed is put into the sampling groove of sensor, the both sides of sampling groove are equipped with light source and light activated element respectively, when light beam that light source sends pass fluid to be measured in the sampling groove penetrate reach light activated element before, part light absorbs fluid to be measured, and the power of utilizing light activated element to receive light can detect some composition of fluid to be measured.

If have natural light to inject in the detection groove, the power that light activated element receives light also will change, and must influence the precision and the reliability of sensor.All loaded onto shading cover in the prior art for this reason, prevented the interference that natural light brings effectively on sampling groove top.

But in the actual measurement operation, forget sometimes shading cover is closed, influenced measuring accuracy, cause quality and security to descend.

The utility model content

The purpose of this practical row is to overcome above-mentioned the deficiencies in the prior art, and a kind of novel photoelectric sensor that has shading cover position (being called for short the lid position) detecting device is provided.When shading cover did not close, the lid bit detector can send corresponding prompt information, has prevented maloperation, has improved the precision and the reliability of sensor, has ensured quality and security.

The utility model is achieved by following technical proposals: a kind of novel photoelectric sensor, comprise light source, sampling groove, light activated element, shading cover, and the top of described sensor and the corresponding position of described shading cover are provided with covers bit detector.

Lid bit detector in the utility model can be a pure pushbutton switch, also can be a noncontacting switch, also can be to measure the parts that cover the position and send information with modes such as photoelectricity, magnetoelectricity, inductance, machineries.The lid bit detector can be installed on the position relative with shading cover, the top of sensor, by detect and shading cover between distance, measure lid.Also can be installed near the shading cover rotating shaft, measure the lid position by detecting the shading cover shaft rotary corner.

The lid bit detector can directly or by interface circuit be connected with the signal device that people such as luminescent device, buzzer can discern, so that alert, also can be directly or be connected by automatic processing equipments such as interface circuit and central controllers, so that send cue or handle automatically.

The beneficial effects of the utility model are: owing to installed the lid bit detector additional, reduced maloperation effectively, helped improving the quality and security, helped improving the precision and the reliability of measurement.

Description of drawings

Fig. 1 is provided with position view for the utility model lid bit detector.

Fig. 2 is the synoptic diagram of an embodiment of the present utility model.

Fig. 3 is the synoptic diagram of another embodiment of the present utility model.

Embodiment

Embodiment of the present utility model as shown in drawings.Please see Figure 1 to Fig. 3, include parts such as light source 1, sampling groove 2, light activated element 3, shading cover 8, shading cover rotating shaft 10 and interface circuit 5.Sampling groove 2 is to be used for placing transparent conduit that fluid to be measured is housed, and light source 1 and light activated element 3 are housed respectively on its both sides, and shading cover 8 can be connected with sensor main body by rotating shaft 10.

Please referring to Fig. 1, from schematic diagram 1 of the present utility model, lid bit detector 4 is installed in the top of sensor, and lid bit detector 4 can directly or by interface circuit be connected with parts 7, and parts 7 are automatic processing equipments such as signal device or central controller.Lid bit detector 4 records lid position information, and this information is sent to parts 7 by above-mentioned connection approach, and is not normal as the operculum position, and parts 7 will send cue or handle automatically to the people.Parts 6 are the external power source to the sensor power supply in all accompanying drawings.

An embodiment of the present utility model shown in Figure 2, this routine middle cover bit detector are pure normally closed buttons 4, and it is relative with shading cover 8 to be installed in sensor top.Just often shading cover 8 closes, and capping is depressed button 4, and circuit is disconnected, and the signal lamp 9 that is connected in series with button 4 extinguishes, and the central controller 7 that is attached thereto has also been received lid position normal information, enters the normal process program.

When shading cover 8 is opened, button 4 closures, the signal lamp 9 that is contained in the sensor full position is bright, notes with alert, and central controller 7 is also received the not normal information in lid position that button 4 sends simultaneously, automatically performs handling procedures such as warning, shutdown.

Fig. 3 uses photovalve 4 as contactless lid bit detector, and by interface circuit 5, an embodiment who is connected with central controller 7.Be when utilizing shading cover 8 to open, the natural light intensity that light activated element 4 is received, when shading cover 8 closes, covered the natural light of directive light activated element 4, because the light quantity difference that light activated element 4 is not received simultaneously in the lid position, the electric signal that converts to are also different, therefore deliver to the information difference of central controller 7 by interface circuit 5, central controller 7 can be made corresponding processing according to the information of receiving.

Claims

1. a novel photoelectric sensor comprises light source, sampling groove, light activated element, shading cover, and it is characterized in that: the top of sensor and the corresponding position of described shading cover are provided with covers bit detector.

2. novel photoelectric sensor according to claim 1 is characterized in that: described lid bit detector is any one in magnetoelectricity, photoelectricity, inductance, noncontacting switch or the pushbutton switch.