CN2139727Y

CN2139727Y - Electron globe

Info

Publication number: CN2139727Y
Application number: CN 92232099
Authority: CN
Inventors: 赵中远
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-08
Filing date: 1992-09-08
Publication date: 1993-08-04
Anticipated expiration: 2002-09-08

Abstract

The utility model discloses an electron globe which can automatically simulate earth rotation and indicate regions of sunlight irradiation. The inner of the globe body (10) of the electron globe is provided with a light emitting lamp (8) and a reflection shade (9) for generating simulated sunlight. A rotary drive mechanism composed of a motor (3) and a transmission component (4) is used to drive the globe body (10) or reflect the shade (9) to get the electron globe to rotate relatively. A computer device (2) is used to control relatively rotary speed to get the electron globe and earth rotation have an equal angular speed. The regions on the surface of the globe body (10) irradiated by the simulated sunlight and regions on the earth surface irradiated by the sun are consistent.

Description

Electron globe

The utility model relates to a kind of computer-controlled terrestrial globe.

The terrestrial globe of Chu Shouing is made up of support plinth and the hollow ball that is printed on map in the market, and when applying external force, spheroid can rotate on support plinth.This terrestrial globe can only show the geographic position of landform, landforms and country, area and the main cities of the earth simply.

Fundamental purpose of the present utility model provides a kind ofly can simulate earth rotation automatically, and simulation shows the electronic Terrestrial globe in solar radiation zone on spherome surface.

To achieve these goals, the scheme that the utility model solves is: electroluminescent lamp and reflection light shield are installed in spheroid, and the effect of reflection light shield is to make light can only illuminate half sphere of spheroid.Drive spheroid or reflection light shield with a rotary drive mechanism, it is relatively rotated.Control rotary drive mechanism by a computer control and drive unit, make spheroid and the reflection light shield in relative rotation angular velocity equate with the angular velocity of earth rotation.

The output terminal of computer control and drive unit also is connected to a nixie display and an initial positioning switch, is respectively applied for the reference position that shows input data and definite spheroid when system start-up, and when moving in system, what nixie display showed is the time.

The utility model is compared with common terrestrial globe, owing to increased computer control system, it can simulate the rotation of the earth intuitively, and the sunrise sunset on the simulation earth surface shows the zone that the sun shone in a day, and has time clock feature.It is as a kind of geographical teaching instrument, and the thinking that can inspire the student increases student's perceptual knowledge, promotes understanding and the grasp of student to relevant knowledge.Because it can carry out computer-controlled lecture experiment easily, so it also can be as the aided education instrument of computer studies.It also is an ornament with certain use value simultaneously, can put in a lot of departments and a lot of occasion.For example, in hotel, restaurant, it had both played decoration function, can replace those again and be used for showing the clock and watch of time all over the world.The utility model is simple to operate, can use all over the world, and when adopting single-chip microcomputer as control computer, cost is lower, and performance and price is relatively good.

Be described further implementing the utility model below in conjunction with accompanying drawing.

Fig. 1 is the machine construction principle figure of the utility model embodiment.

Fig. 2 is the electrical schematic diagram of embodiment.

Fig. 3 is the computer software structural drawing of embodiment.

In the structure principle chart shown in the accompanying drawing 1, spheroid 10 links to each other with base 1 by bearing 5,6.Rotary drive mechanism is made up of motor 3 and drive disk assembly 4, and what motor was selected for use is stepper motor, and rotatable parts can be shaft coupling, gear pair, worm gear pair or friction rubber wheel etc., and usefulness is speed reducing gear pair in an embodiment.Drive disk assembly 4 is connected with spheroid 10, is driven by the motor 3 that is fixed on the base 1.Stepper motor adopts the three-phase six-beat power supply, step angle is 1.5 °, owing to be the pulse interruptedly supplying power, when therefore not acceleration and deceleration device moved, the rotation of spheroid had tangible jump, when gear reduction ratio is 6:1, spheroid per minute kind needs rotate once, mean angular velocity is 15 °/hour, and is identical with the angular velocity of earth rotation, approximate level and smooth rotation of spheroid.Electroluminescent lamp 8 and reflection light shield 9 are installed in spheroid 10, they can be combined, and also can divide to be arranged, in the present embodiment, electroluminescent lamp 8 is contained on the reflection light shield 9, and the brearing bore that hollow bar 7 is passed spheroid 10 will reflect light shield 9 and be fixed on the base 1.Computer control and drive unit 2 are installed on base 1, and its output terminal is electrically connected with motor 3.Nixie display 11 and initial positioning switch 12 also are installed on the base 1, and they all are electrically connected with the output terminal of computer control with drive unit 2.Switch 12 can be used contact switch, also can use noncontacting switch, and what use in this example is that the contact microswitch is arranged, and supporting with it location contact block 13 is installed on the drive disk assembly 4, and their effect is a reference position of determining the spheroid rotation.

In electrical schematic diagram shown in Figure 2, computing machine is selected for use is 8751 single-chip microcomputers in the MCS-51 series, there are the data-carrier store (RAM) of 128 bytes and the program storage (EPROM) of 4K byte in its inside, does not need outside expansion can satisfy the native system needs.Seven lines of the P1.0～P1.6 of 8751P1 mouth are as the section route selection of nixie display LED, and eight integrated package BIC8718 are as the power drive of section route selection, external pull-up resistor, and a position route selection is P2.0～2.4 5 line, power drive also is BIC8718.The mode of software decoding dynamic scan is adopted in the demonstration of LED, to save hardware resource.Three lines of the P0.0～P0.2 of PO mouth are as the control line of stepper motor BD, and the analog line driver of stepper motor is four Darlington switch ULN2068, and its input end connects and draws resistance, and software mode is also adopted in required pulse ring distribution.Four lines of the P0.3-P0.6 of PO mouth are switching value incoming lines, are connected to button K1, K2, K3 and microswitch K4 and pull-up resistor above respectively, and wherein K1 is input data item options button, and K2 is a data entry key, and K3 is that system's operation is strong, and K4 is initial positioning switch.After each system reset, spheroid all will forward on the reference position of being set by K4, after area code and local time data are imported when territory of use, computing machine automatically compares with time area code and the zero-time data of reference position, calculate this place angle that this moment, spheroid need turn over, and commander's rotary drive mechanism makes spheroid turn over equal angular.In the present embodiment, start position setting is on warp zero degree line, and the zero-time data are zero point at midnight.K5 is a reset key among the figure.The power supply of present embodiment adopts 220 volts of interchanges to provide through step-down, rectification, filtering.Three terminal regulator 7805 is adopted in the voltage stabilizing of 5 volts of power supplys.What electroluminescent lamp L used is 6 watts of fluorescent tubes, directly by 220 volts of Alternating Current Power Supplies.The unreceipted port of all integrated circuit connects by the technical requirement of each integrated package.

Computer software structure shown in Figure 3 is described as follows:

Initialization: all orders in the system, state and relevant storage unit set are become original state.

Reference position drives: start stepper motor, make spheroid forward reference position to.

Prompt shows: after spheroid forwards reference position to, and display reminding symbol " P ".

Key scanning: execute key scanning sequence.

Loosing changes: change instruction (JMP@A+DPTR) according to loosing, be provided with and be transferred to the port address table, realize the transfer of key function program.

K1 key function program: whenever press primary key, select the input of a kind of data, and Status Flag is set, the data that native system need be imported sometimes area code, the time, totally three of branches, every different prompts of usefulness show.

K2 key function program: adopt " adding 1 " mode to import data, promptly whenever by primary key make input data value add 1, show input results.

K3 key function program: start the clock working procedure, demonstration time, step motor drive program of execution in per 1 minute.

Order/status poll: inquiry system order and Status Flag.

Condition control is shifted: according to the Query Result branch transition.

A shifts: loop jump is used for circulation and shows the input data, so that inquire about and revise.

B shifts: wait to be transferredly, wait for next button.

C shifts: the transfer that resets is used for system command and hardware reset.

Claims

1, a kind of terrestrial globe, it comprises the base of spheroid and supporting spheroid, it is characterized in that it also comprises: electroluminescent lamp [8] and reflection light shield [9], be installed in the spheroid [10], be used for producing simulated solar irradiation;

Rotary drive mechanism by motor [3] and drive disk assembly [4] are formed is installed on the base [1], is used for driving spheroid [10] or reflection light shield [9], and it is relatively rotated;

Computer control and drive unit [2], its output terminal is electrically connected with motor [3].

2, terrestrial globe according to claim 1 is characterized in that, the output terminal of computer control and drive unit ［ 2 ］ also is connected with a nixie display ［ 11 ］ and initial positioning switch ［ 12 ］.