CN201095637Y

CN201095637Y - Multifunctional bacteria colony counter

Info

Publication number: CN201095637Y
Application number: CNU2007200690055U
Authority: CN
Inventors: 马宗超
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-08-06
Anticipated expiration: 2017-04-17

Abstract

The utility model relates to a laboratory apparatus integrating bacterial colony calculation and timing control functions into a whole, and the laboratory apparatus comprises a counting cell, a mark pen, a counting display and a timing control part. The utility model is characterized in that a high-luminance white light emitting diode encircles a side lighting double layer depth dark background counting cell, a sensitive switch mark pen marks bacterial colonies and simultaneously triggers a counter to realize handmarking automatic counting and the design of the tribit dynamic scan digital display counter is in consistent to national bacterial colony calculation and inspection regulations (GB/T4789.2-2003). The laboratory apparatus has the advantages that bacterial colonies are clearly displayed and the digital display is bright, thereby greatly reducing the labor intensity of inspectors and improving counting accuracy; the apparatus is simply structured, energy-consumptive and convenient to use.

Description

Multi-functional bacterial colony count device

Affiliated technical field

The utility model is in the laboratory equipment of one about a kind of bacterial colony count, timing control function of comprising.

Background technology

Bacterial colony count is the essential items for inspection of hygieneic bacteriology check; the particularly issuing and implementation of rules such as " drug administration law ", " Law on Environmental Protection ", " food hygiene law ", " makeup management rules "; the enumeration workload that health detects unit increases greatly; the method that relies on artificial visually examine's mental arithmetic in the past to add up can not be satisfied the demand; wish very much to have a kind ofly can alleviate reviewer's labour intensity, can improve the equipment of quality inspection and work efficiency again.

Enumeration is a kind of method of the contained bacterial count of sample for reference, sample is after the cultivation of certain program, and bacterium wherein forms macroscopic bacterium colony through breeding in substratum, a bacterium colony is to be formed by a bacterial reproduction, so can calculate bacterial count in the sample by colony number.Bacterium colony is handed the direct visual inspection counting of culture dish and is got final product after a little while, and bacteria containing amount is observed relatively effort more for a long time.As far back as the twentieth century 30-40 age Woffhugel Salmonella counter that falls has appearred just for this reason, its basic structure is that a glass that is decorated with grid is installed above a low bulb, tested culture dish is placed on glass the counting, only provided the convenience that lighting source and subregion are observed, still artificial visually examine's mental arithmetic adds up, and acts on limited.

The appearance of micro calculator provides convenience for the various work that need to add up numeral, a kind of colony counter that micro calculator and luminous source lamp box are combined is arranged, go up the pen of a belt switch in parallel at the equals' key (=) of counter, having triggered equals' key during with the bacterium colony on the mark culture dish realizes adding up, improved work efficiency and also had deficiency, the one, must be successively by the on, 1 of counter ,+,=, could realize adding up behind 0 five keys begins counting; The 2nd, the numerical aperture of micro calculator is less and do not have an illumination, is moving order reading to the liquid crystal display that not have illumination behind the bright place mark bacterium colony immediately, and eyesight is fatigue and influenced working efficiency very easily.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency and realizes a tractor serves several purposes and a kind of multi-functional colony counter that comprises counting cell, marker pen, counting display circuit and timing control circuit is provided, and the purpose of this utility model is realized by following scheme:

The utility model comprises that counting cell, marker pen, counting show and timing control circuit.

Described counting cell be a circle, the depression, by many high brightness white light-emitting diodes around, double-deck depth dark background structure; It at the bottom of the counting cell opticglass culture dish pallet that a slice is carved with coordinate scale, pallet has certain depth between down at the bottom of the instrument, instrument internal surface under the counting cell depth all is coated with opaque black, and about the photodiode and the outside all has tinted shade only to allow light flat fire in the middle of counting cell.

Described marker pen has mark culture dish bacterium colony to be avoided repeat count and produces count signal (pulse) dual-use function, and in the mark bacterium colony, built-in touch-switch is touched, and produces metering pulse flip-flop number circuit and counts automatically; The key of marker pen is a switch wherein, the utility model adopts diaphragm micropump formula touch-switch, and its internal structure is the bowl-shape reed of a back-off, covers a tinsel below, when button pressed downwards to a certain degree the time, reed suddenly rapidly upset contact with tinsel under it; When waiting to relax to a certain degree, reed restores to the original state rapidly suddenly again and tinsel disconnects; This structure can not be shaken switch when moving, the approximate square-wave pulse of output cooperates with original shaping circuit in the integrated circuit of counter again, guarantees the accurate of counting.

Country's enumeration inspection procedure regulation, must be used for counting by the culture dish of choosing growth colony number between 30-300, all should be during greater or less than this scope with raw sample recast accuracy (GB/T4789.2-2003) after suitably handling to guarantee to check, in view of the above, described counting display circuit adopts three figure place sign indicating number display counters.

Described timing control circuit combines MM5462 digital clock large-scale integrated circuit and rly., and the break-make of drawing its function signal relay when noisy reaches time opening and closes the purpose of consumer.

The beneficial effects of the utility model are embodied in its following advantage that has:

1. the utility model realizes that the handmarking counts automatically, and operating performance is easy, and large-sized luminous charactron clear display is understood, alleviates reviewer's labour intensity greatly, reduces personal errors, improves the accuracy of counting;

2. sensitive reliable, simple in structure, easy to use, good looking appearance takes place with mark bacterium colony and generation metering pulse flip-flop number in the utility model simultaneously;

3. the utility model cooperates the high brightness white light-emitting diode around side light with exclusive " double-deck depth dark background counting cell ", and bacterium colony manifests clear, and energy consumption is low.

4. the utility model adopts three dynamic scan counters, not only meets national inspection procedure (GB/T4789.2-2003) but also simplify circuit structure, reduces manufacturing cost;

5. the utility model has the function of counting and self-timing opening and closing consumer simultaneously, realizes a tractor serves several purposes.

Description of drawings

Fig. 1 is the utility model embodiment schematic appearance;

Fig. 2 is the utility model embodiment side cross-sectional schematic;

Fig. 3 is the utility model embodiment marker pen internal structure synoptic diagram;

Fig. 4 is the utility model embodiment counting, display circuit principle schematic.

Fig. 5 is the utility model embodiment timing control circuit MM5462 large-scale integrated circuit and rly. connection diagram.

Embodiment (embodiment):

Below in conjunction with drawings and Examples the utility model is described further.

Structure of the present utility model is seen accompanying drawing.

Number in the figure: 1. instrument panel, 2. tinted shade, 3. high brightness white light-emitting diode, 4. culture dish pallet, 5. culture dish, 6. switchboard, 7. digital display screen, the 8. pen cap, 9. nib, 10. pen core, 11. diaphragm micropump formula touch-switch.

Embodiment:

The utility model comprises counting cell, marker pen, counting display circuit and timing control circuit.

Fig. 1, embodiment illustrated in fig. 2 in, counting cell is positioned at the middle part of instrument panel (1), be a diameter 100mm, the circular depressed structure of dark 10mm, it at the bottom of the pond opticglass culture dish pallet (4) that a slice is carved with coordinate scale, have below the culture dish (5) that just in time can hold a diameter 90mm in the pond, the instrument panel of counting cell periphery (1) many high brightness white light-emitting diodes (3) around, the cold light source of suitable brightness is provided to culture dish (5); About the high brightness white light-emitting diode (3) and the outside all has tinted shade (2) only to allow light flat fire in the middle of counting cell; Instrument internal surface under the counting cell depth all is coated with opaque black, so that bright bacterium colony clear manifesting before dark background.

Marker pen shown in Figure 3 is changed a social system by commercially available micropore pen, and the structure of micropore pen comprises the pen cap (8), nib (9) and pen core (10); Diaphragm micropump formula touch-switch (11) is fixed on the bottom in the pen cap (8) and lead drawn; Pen core (10) must block suitable length so that its tail end face just closely contacts with the touch-switch button after assembling; During the mark bacterium colony, nib (9) is under pressure and has triggered diaphragm micropump formula touch-switch (11) together with pen core (10) indentation in the pen cap (8) and produce a metering pulse exports counting, display circuit to via lead input terminus.

Counting shown in Figure 4, display circuit are made of three integrated circuit of dynamic scan counter of MC14553 and three LED light-emitting nixie tubes; K2 is a counting input end, accepts to count from the pulse signal of marker pen, and K1 is clear 0 button.

Signal is drawn by 12 pin during MM5462 digital clock large-scale integrated circuit shown in Figure 5 noisy, and the A of relay J, the break-make between B reach time opening and close the purpose of consumer after triode BG amplifies.

Claims

1. a multi-functional bacterial colony count device that is used for food, medicine, biological products, the contained bacterial count check of environmental sample is made up of counting cell, marker pen, counting demonstration and timing control circuit; Complete machine is prolate side's bodily form, the panel front front end protrusion is the inclined-plane and makes display window, the space mounting counting display circuit in the inclined-plane, and the LED light-emitting nixie tube of display circuit is positioned at display window, the input terminus of counting circuit connects the marker pen socket on the panel, so that the isolabeling pen connects.

2. multi-functional bacterial colony count device according to claim 1, it is characterized in that: counting cell is positioned at the middle part of instrument panel, be a diameter 100mm, the circular depressed structure of dark 10mm, it at the bottom of the pond opticglass culture dish pallet that a slice is carved with coordinate scale, have below the culture dish that just in time can hold a diameter 90mm in the pond, the instrument panel of counting cell periphery many high brightness white light-emitting diodes around, the cold light source of suitable brightness is provided to culture dish; About the high brightness white light-emitting diode and the outside all has tinted shade only to allow light flat fire in the middle of counting cell; The following instrument internal surface of counting cell depth all is coated with opaque black.

3. multi-functional bacterial colony count device according to claim 1 is characterized in that: marker pen is with the transformation of the way of micropore pen, diaphragm micropump formula touch-switch is fixed on the bottom in the pen cap and lead drawn.

4. multi-functional bacterial colony count device according to claim 1, it is characterized in that: counting, display circuit are made of three integrated circuit of dynamic scan counter of MC14553 and three LED light-emitting nixie tubes, and its counting input end linkage flag pen socket receives the metering pulse from marker pen.

5. multi-functional bacterial colony count device according to claim 1, it is characterized in that: timing control circuit is a core with MM5462 digital clock large-scale integrated circuit, draw its when noisy function signal amplify the purpose that the break-make of back relay reaches time opening and closes consumer through transistor.