CN87213660U - Pocket digital cardiotachometer - Google Patents

Abstract

The utility model discloses a pocket digital cardiotachometer which is mainly used for measuring human body's heart rates, comprising self-reset and repeated measuring functions. Results are displayed by numbers. The conditions of illness such as heart rate irregularity, premature beat, etc. can be observed by the flickering situation of a heart rate indication LED. The utility model is composed of a pulse sensor, integrated circuits, calculators, a power switch, an LED, a gear select switch and an outer skin. When the cardiotachometer is used, the power switch is closed, a finger is inserted into the pulse sensor, and results are displayed automatically with the beating times of human body's pulses.

Description

Pocket digital cardiotachometer

The present invention relates to a kind of improved electronics cardiotachometer, particularly a kind of electronics cardiotachometer that can automatically displaying number.Be applicable to hospital, recuperate health care department and oneself detect.

Existing electronics cardiotachometer (also claiming electronics pulse instrument) mainly is made up of pulse transducer, integrated circuit, tone generator, audion, flashing diode, a shell.The electronics pulse instrument of Chu Shouing is exactly this structure in the market.According to " radio " the magazine first phase in January, 1987 disclosed also be this form.When test, the electronics cardiotachometer shows with the form of sound and light, therefore, this electronics cardiotachometer can only provide a kind of signal to people, can not calculate people's beat pulse number of times and award demonstration, the pulse of detecting the people for people's science has brought inconvenience, can not do quantitative discriminatory analysis.

Task of the present invention is that a kind of improved electronics cardiotachometer one pocket numerical heart rate instrument will be provided, and it can calculate the beat pulse number of times of human body easily, and shows on display screen.

Task of the present invention is finished as follows: on the basis of the pulse transducer that keeps disclosed electronics heart rate, flashing diode, shell, integrated circuit, adopt a computer as showing and computing unit earlier; And, wherein form seven single stabilization delay circuits for four with the whole instrument circuit of six integrated circuit basic compositions, form five analog switching circuits for two.Simultaneously according to different instructions for uses, also be user on cardiotachometer design and installation the class selector switch; For the ease of the convenience of carrying, the computer of its demonstration and calculating usefulness can adopt pocket calculating machine to be advisable; Control the needs of power supply in addition in conjunction with the present invention, should on whole instrument circuit, control button switch by the design and installation power supply.So the present invention is by pulse transducer, six integrated circuits, pocket calculating machine, flashing diode, shell, class selector switch, power supply control button switches set dress and constitute.The present invention is rational in infrastructure, carries, easy to use, provides detection means easily in particular for old people and cardiac.

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

Fig. 1 is a three-dimensional design drawing of the present utility model.

Fig. 2 is a basic circuit diagram of the present utility model.

Fig. 3 is the partial enlarged drawing that the class selector switch (6) among Fig. 2 connects simulation switch SW D end.

Accompanying drawing number of the present utility model is pulse transducer (1), flashing diode (2), shell (3), integrated circuit (4), computer (5), class selector switch (6), power control switch (7), computer "=" key (8), computer " ON/C " key (9), computer " 4 " key (10), computer " 2 " key (11); "+" key (12) of computer.

With reference to Fig. 1,2,3, one has and shows and the computer (5) of computing function (this utility model adopt be the EL-838 type pocket calculating machine of Japanese Sharp company manufacturing) is fixedly installed in the shell (3), extract AK1, the AK2 that two contacts connect the two ends of analog switch SWA, SWB out by computer "=" key (8) respectively from the behind of computer (5) then, its objective is with the arrival of pulse signal conducting and close, ceaselessly add up to guarantee it; Extract the two ends that two contacts meet analog switch SWC out by computer " ON/C " key (9), the closure of analog switch SWC and opening once is equivalent to by " ON/C " key of a computer, its objective is the startup and the Protection Counter Functions that guarantee cardiotachometer; Respectively extract KA, the KB end that two contacts connect the class selector switch (6) of analog switch SWD connection out by " 2 " key (11), " 4 " key (10) of computer, when arbitrary class was selected by needs in two ends, 1 grade, computer added up by 4,2 grades, computer adds up by 2; "+" key (12) by computer connects analog switch SWE end.Simultaneously entire circuit of the present invention is made up of four CO39 integrated circuits and two C544 or C514 integrated circuit, four C039 integrated circuits wherein have 16 doors, form a control circuit for per two, HF1 wherein, HF2 form pre-amplification circuit, input termination pulse transducer (1), output termination flashing diode (2) and the analog switch SWA of HF2, hold constantly conducting and closing of the in/out of SWA and ovt/in with the arrival of pulse signal thereby guarantee to amplify the UCA that the afterpulse signal is added to SWA.But this moment, the UCA with the placed in-line SWB of SWA held because of signal strobe is not arranged, so be still open-circuit condition, for this reason, though SWA is in continuous variation, but because of SWB is an open-circuit condition, so also be still open-circuit condition between AK1 and the AK2, flashing diode (2) is ceaselessly glittering owing to accept pulse signal simultaneously.14 remaining doors, form the identical single stabilization delay circuit of one-level for per two, a is the first road program, retention time is 0.1～0.2 second, input connects the 7th single stabilization delay circuit and power control switch (7), the other end of power control switch (7) links to each other with vdd terminal, the outfan of HF3 is connected with the input of second single stabilization delay circuit, capacitor C of middle series connection ', C electric capacity on the outlet line of HF3 is in parallel with R resistance simultaneously, connect with R ', then, R resistance is connected with VDD, to form the loop, R ' resistance is connected with the input of HF4, the outfan of HF4 and analog switch SWC, the input of HF3 is connected, and starts and Protection Counter Functions to constitute.B is the single stabilization delay circuit that is inserted between first to second program, retention time is 0.1～0.2 second, it is to solve the low problem of liquid crystal board response speed with the 3rd single stabilization delay circuit, vdd terminal the connected mode first road program (i.e. first single stabilization delay circuit) together, its effect.C is a third level single stabilization delay circuit, and promptly as the second road program, the retention time is 0.1～0.2 second, and it is connected the connected mode with B and C with D, and outfan is connected with analog switch SWD, meets 2 or meet 4 functions that add up with formation.D is a fourth stage single stabilization delay circuit, is inserted between the second and the 3rd program itself and the connected mode with c and d of being connected of e.The same b of its function.E is the level V single stabilization delay circuit.I.e. the 3rd road program, the retention time was respectively 15 seconds and 30 seconds, itself and the connected mode of being connected of f with b and c, outfan is connected with analog switch SWE, with the b coupling, the heart rate pulse of calculating the people in the nominal time changes and shows.F is the 6th a grade of single stabilization delay circuit, i.e. the 4th road program, retention time is 0.1～0.2 second, it and the connected mode of being connected of g with b and c, outfan leaves SWB with simulation and is connected, to intend switch SW A coupling, to guarantee the open-circuit condition between AK1 and the AK2 with placed in-line analog switch.G is the 7th a grade of single stabilization delay circuit, and the outfan of the door of its input and the input of a are connected, and the retention time is six seconds, its effect be trigger the first road program (be the first order single stabilization delay circuit a), program is repeated.In addition, the connection of the Men Yumen in every grade of b to g single stabilization delay circuit is with the connected mode of Men Yumen among a.Thereby a～g constitutes the sequence circuit of whole instrument, and sequence circuit and pre-amplification circuit, analog switching circuit constitute the alleged integrated circuit (4) of whole instrument.Simultaneously, shell (3) is according to the requirement of assembling cardiotachometer, should do and show the window of usefulness, the flash hole of flashing diode (2), the fixed installation hole of fixedly exposing hole, power control switch (7) of class selector switch (6) for the computer (5) that assembles, pulse transducer (1), flashing diode (2), integrated circuit (4), computer (5), class selector switch (6), power control switch (7) with cardiotachometer is fixedly installed togather with shell (3) then, promptly constitutes pocket numerical heart rate instrument of the present invention.

During use, will point and insert in the pulse transducer (1), press power control switch (7), thereby make heart rate pulse signal pass through integrated circuit, shown that on the display screen of computer (5) frequency of pulse in each time rating shows automatically, constantly repeats.Also have pulse transducer (1) can make with cardiotachometer and be connected and fixed structure or insert movable structure, adopt a kind ofly arbitrarily, what the present invention adopted is movable plug in construction.In addition, the regulating and controlling of amplifying circuit of the present invention and each grade single stabilization delay circuit is to adopt the electric capacity, the resistance that are connected in its circuit to adjust.

Claims (4)

1, a kind of pocket numerical heart rate instrument of being made up of pulse transducer (1), flashing diode (2), shell (3), integrated circuit (4) is characterized in that:

A, demonstration and calculating adopt computer (5) as showing and computing unit;

B, integrated circuit (4) are formed by six, wherein form seven single stabilization delay circuits for four, form five analog switching circuits for two;

2, pocket numerical heart rate instrument according to claim 1 is characterized in that the cardiotachometer design has class selector switch (6).

3, pocket numerical heart rate instrument according to claim 1, the computer (5) that it is characterized in that showing and calculating usefulness adopts pocket calculating machine.

4, pocket numerical heart rate instrument according to claim 1 is characterized in that the cardiotachometer design has power supply control button switch (7).

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