CN86210136U - Multi-channel timer for computer - Google Patents

Abstract

The utility model relates to a multi-channel timer for computer, comprising an instrument shell, a control panel and a computer time-controlling system. The computer time-controlling system comprises a computer body, a displaying driving device, a relay control device and an alarm device. A timer can time more than 20 channels and the maximum time can reach 99 minutes. The utility model can alarm when the time is up, can display the corresponding channel number and can inquiry the timing condition. The utility model has the advantages of simple operation and precise timing and can be applied to the fields where multi channels need to be timed.

Description

Multi-channel timer for computer

The utility model belongs to the technological improvement of time set.

Multipath timing device in the past is a mechanical type mostly, is to constitute the loop by contacting of minute hand and timing contact pin to send and report to the police and realize timing, and its accuracy and poor reliability, the numerous rope of operation, timing time weak point, timing way are few.For addressing the above problem, develop a kind of multichannel computer timer, this timer timing way can reach 20 with, timing maximum time can reach 99 minutes, also has then to report to the police, and shows corresponding road number, at any time inquire about certain timing situation, simple to operate, advantages and the function of controlling other electric switch such as accurate timing are applicable to the every field that needs the timing multichannel time.

Accompanying drawing 1 is a front of the present utility model oblique view, and wherein 1 is keyboard, and 2 is Instrument shell, 3 is timing display, and 4 is alarm lamp, and 5 is power switch, 6 is power light, 7 is alarm, and 8 are the knob that resets, and 9 are supply socket, 10 is fuse holder, 11 is crystal clock, and 21 is control panel, and 22 is the locating and displaying device.

Fig. 2 is the right side view of multichannel computer timer, wherein 12 turns round for sound equipment control, and 13 and 14 is jack.

Fig. 3 is the circuit diagram of basic computer 15.

Fig. 4 is the circuit diagram of display drive apparatus 16.

Fig. 5 is the circuit diagram of relay control device 17.

Fig. 6 is the circuit diagram of warning device 18.

Fig. 7 and Fig. 8 are respectively the power supply diagram of power supply 19 and 20.

Now 1～7 pair of the utility model is that Multi-channel timer for computer is described further by reference to the accompanying drawings. Multi-channel timer for computer comprises Instrument shell (2), control panel (21) and computer timing control system. On control panel (21), be provided with locating and displaying device (22), timing display (3), alarm lamp (4), power switch (5), power supply indicator (6), alarm (7), the knob that resets (8), quartz clock (11). Supply socket (9) and fuse holder (10) are set in a side of Instrument shell (2), sound equipment control are set in the another side turn round (12), jack (13) and (14). Computer timing control system is arranged in the Instrument shell (2), below the control panel (21). This device is by basic computer (15), display drive apparatus (16), relay control device (17), warning device (18) and power supply (19), (20) consist of, Fig. 3～7 are respectively basic computer (15), display drive apparatus (16), relay control device (17), the circuit diagram of warning device (18) and power supply (19), (20).

Basic computer (15) comprises Z80CPU(U ₈), ROW2716(U ₉), RAM6116(U ₁₀) and integrated circuit U ₁₁, U ₁₂, U ₁₃, U ₁₄, U ₁₅U wherein ₈In be provided with by 2/6 U ₁₅, switch S ₁, resistance R ₄, R ₅And capacitor C ₁The reset circuit of forming.This reset circuit can finish to computer booting automatically reset and hand by the switch reset function.U ₈All be connected into 1 level on last 16,17 and 24 pin.U ₉And U ₁₀Be storaging chip, their start address is respectively 0 and 0000H, U ₉Deposit the whole service program, and U ₁₀Be program work district, U ₈Pin 7～15(except that 11 pin) 8 pieces lines are as the data conveyer line between storer and the CPU.Integrated circuit U ₁₁, U ₁₂And U ₁₃Formation is to the read-write and the decoding logic of external interface.2/6 U ₁₅, resistance R ₆, R ₇, capacitor C ₂, C ₃Constitute oscillatory circuit with 4,000,000 crystal oscillators (4MC), for the CPU frequency working pulse, it offer CPU weekly the phase be the clock of 0.5 μ S, the software timing is also calculated according to this basic time, the timing way can reach 10～20 the tunnel, or more.

The display drive apparatus circuit comprises U ₁, U ₂, U ₃, U ₄, U ₅, U ₆, U ₇, U ₁₇, display led ₁, LED ₂, LED ₃, LED ₄, resistance R ₂₁～R ₂₄, R ₂₅～R ₃₁U ₁₇Be the relay control signal interface, two control level signals are provided by 2,5 bipods.U ₃16 pin provide alerting signal.R ₂₁～R ₂₄Formed keyboard circuit, U with 16 buttons that are arranged on the control panel ₁And U ₂And R ₂₅～R ₃₁The section of forming 4 displays latchs, driving circuit, U ₆For reading the interface circuit of keyboard state, U ₃With U ₄, U ₅The position that constitutes display drives and reads keyboard circuit.U ₇Provide the interface circuit chip selection signal of keyboard demonstration, warning, switch.When needs show, computer CPU will show that by data bus sign indicating number is earlier by U ₁Latch, and deliver to U ₂, and then open by that (being a certain LED) pairing cathode drive that data bus will show, it is exactly U ₄And U ₅Four doors, at this moment U ₂With U ₁The demonstration sign indicating number of sending here provides drive current (" 1 " drives, and " 0 " does not have) by " 0 ", " 1 ".U ₂Output receive the light emitting diode anode of light-emitting diode display, the negative electrode driving gate of that LED is open like this, it just demonstrates character.When showing more than 1 LED, CPU just carries out aforesaid operations to them by turns, but each time has only a LED electrified light emitting.

Computing machine is to carry out turning off under the situation of demonstration to reading of keyboard.At this moment, U ₄, U ₅Output becomes low level entirely, passes through U again ₆Read SR ₁～SR ₄Current potential on these four lines.Do not press if there is key, then equal level"1", if there is a certain key to press, then the current potential on its homologous lines becomes " 0 ".This computer-chronograph is at U ₄And U ₅Four outputs on respectively reset read, so just the key position of pressing can be found, finish the management that computing machine organically combines the routine analyzer of keyboard and keyboard-display circuit.

Warning device comprises light warning and audible alarm.The light warning circuit is by D ₇And R ₃₃Form, the audible alarm circuit is by T ₁, T ₂, GT ₁With the Y(loudspeaker) form.Alerting signal is passed through U by CPU ₃16 pin provide level"1", light emitting diode D ₇Conducting is luminous, GT ₁Conducting, the triode conducting is by R ₃₆, C ₄And T ₁The oscillation circuit of forming carries out self-sustained oscillation, through T ₂Amplify the back and promote the loudspeaker warning of sounding.

Relay control.The signal that cut-offs of relay is to pass through U by CPU ₁₇Provide GT ₃, T ₅, T ₆Constituted the driving circuit of a relay, GT ₂, T ₃, T ₄Constitute another group circuit, relay closure signal is " 1 ", is " 0 " at ordinary times.GT ₂And GT ₃Play the photoelectricity buffer action, to guarantee the operate as normal of computing machine.

Be example with the 14,10 five road timing alarm control procedures below, the course of work of the present utility model is described.At first start, reset circuit produces a negative pulse reset signal, makes cpu reset, and CPU is from ROM2716(U after resetting ₉) in No. 0 unit begin to take out instruction and carry out, at first with RAM6116(U ₁₀) the workspace zero clearing, enter the key entry state of waiting for then.Carry out timework simultaneously, when certain road has been set up timing, then begin to read road work, what be not provided with does not carry out timing, has two to key in instruction under non-alarm condition, promptly sets timing and shows time status.And have only clear instruction, each road timing under the alarm condition is to begin after having keyed in road number and time, having clicked enter key at last, is 14 or 10 five the tunnel if pack into, and then corresponding relay also begins with timing and adhesive.Arrive when certain road timing, just provide warning mark, at this moment send alerting signal.One of if 14 or 10 five the tunnel, then its relay disconnects.Also be not eliminated and there is situation then the back for warning road, front, then continue to show the warning road number of front, after elimination, show that road, back number again.

Claims (3)

1, a kind of multichannel computer timer, comprise instrument shell [2], control panel [21] and computer timing control system, it is characterized in that said control panel [21] is provided with locating and displaying device [22], keyboard [1], timing display [3], alarm lamp [4], power switch [5], power light [6], alarm [7], the knob that resets [8], crystal clock [11]; Supply socket [9] and fuse holder [10] are set in a side of said instrument shell [2], sound equipment control knob [12], jack [13] and [14] are set in the another side; Said computer timing control system is arranged in the instrument shell [2], and below the control panel [21], this device is by basic computer [15], display drive apparatus [16], relay control device [17], warning device [18] and power supply [19], [20] formation.

2,, it is characterized in that said basic computer (15) comprises U according to the described multichannel computer timer of claim 1 ₈, U ₉, U ₁₀With integrated circuit U ₁₁, U ₁₂, U ₁₃, U ₁₄, U ₁₅, wherein at U ₈In be provided with reset circuit, this circuit is by U ₁₅, S ₁, R ₄, R ₅And C ₁Constitute U ₈Last 16,17 and 24 pin are connected into 1 level, to the read-write of external interface and decoding logic circuit by U ₁₁, U ₁₂, U ₁₃Constitute, the oscillatory circuit that supplies the CPU working pulse is by U ₁₅, R ₆, R ₇, C ₂, C ₃Form with 4,000,000 crystal oscillators (4MC).

3, according to the described multichannel computer timer of claim 1, it is characterized in that said display driver circuit comprises that the section of display latchs, driving circuit, keyboard circuit, the position of display drives and reads keyboard circuit and integrated circuit U ₃, U ₁₇, display led ₁, LED ₂, LED ₃, LED ₄, wherein four displays the section latch, driving circuit, by U ₁, U ₂And R ₂₅～R ₃₁Constitute, keyboard circuit is by R ₂₁～R ₂₄Form with 16 buttons that are arranged on the control panel, the position of display drives and reads keyboard circuit by U ₃With U ₄, U ₅Constitute.

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