CN2906683Y

CN2906683Y - PTZ and lens positioning device

Info

Publication number: CN2906683Y
Application number: CN 200520044376
Authority: CN
Inventors: 王吉
Original assignee: SHANGHAI HOWELL ELECTRONICS CO Ltd
Current assignee: SHANGHAI HOWELL ELECTRONICS CO Ltd
Priority date: 2005-08-18
Filing date: 2005-08-18
Publication date: 2007-05-30
Anticipated expiration: 2015-08-18

Abstract

The utility model provides a locator for position of a cradle head and lens, mainly comprising a horizontal directional reluctance transmitter, a vertical directional inclination sensor (or adopting a level and vertical directional triaxial reluctance transmitter), a microprocessor with an A/D change-over function, and an automotive cradle head lens control which controls the omnibearing cradle head and the two variable lenses of the automatic diaphragm; a simulating signal output line of the horizontal directional reluctance transmitter and vertical directional inclination sensor and the outgoing feeder of the magnification and zoom position feedback value of the two variable lenses of the automatic diaphragm are connected to the analog input end of the microprocessor; the microprocessor is connected with the cradle head lens control by a bus. With the structure, the utility model mainly solves the technological problem that the procuration of the current location of the cradle head by timing the rotation of the vertical electric machine in the existing technology presents a large error and a progressive error. The utility model is widely used in the image monitoring field.

Description

The Cloud Terrace, lens location orientator

Technical field:

The utility model relates to the television monitoring and controlling head aut.eq., the orientator of the accurate positioning cradle head of particularly a kind of energy, lens location.

Background technology:

At present the position (level is with vertical) of The Cloud Terrace (low speed, constant speed, speed change at a high speed) is the current location that obtains The Cloud Terrace by the timing to the rotation of level and motor vertical, error is bigger, the problems such as absolute direction position that also exist cumulative errors simultaneously and can not obtain cradle head direction.

The utility model content:

The purpose of this utility model is to provide the orientator of a kind of The Cloud Terrace, lens location, solves in the prior art current location that obtains The Cloud Terrace by the timing to the rotation of level and motor vertical, so that error is big and produce the technical matterss of cumulative errors.

For solving the problems of the technologies described above, the utility model is achieved in that

A kind of The Cloud Terrace, lens location orientator, it is characterized in that: mainly by the horizontal direction magnetoresistive transducer, vertical direction obliquity sensor (or employing level, three magnetoresistive transducers of vertical direction), have the microprocessor of A/D translation function, and the automatic The Cloud Terrace lens controller formation of controlling comprehensive The Cloud Terrace and auto iris two variable lenses; The change of the simulating signal output line of this horizontal direction magnetoresistive transducer, vertical direction obliquity sensor and auto iris two variable lenses doubly, zoom position value of feedback output line is connected to the analog input end of microprocessor, and this microprocessor through bus connects The Cloud Terrace lens controller.

This horizontal direction magnetoresistive transducer adopts twin shaft magnetoresistive transducer or three magnetoresistive transducers of Honeywell.

This vertical direction obliquity sensor adopts VTI company series obliquity sensor.

8,16 of this processor adopting or 32-bit microprocessor.

Said bus is RS232 or RS485 bus.

Make by said structure and the utlity model has following advantage:

1, the utility model utilizes magnetoresistive transducer to obtain the angle of cut of The Cloud Terrace and geomagnetic chart linesofforce, can calculate the sensing of the absolute direction of The Cloud Terrace, because the variation of geomagnetic chart linesofforce is very little, the error that therefore at every turn obtains the The Cloud Terrace position compares less, and does not have cumulative errors.And utilize obliquity sensor, and can obtain the angle of The Cloud Terrace, and then obtain the vertical sensing of The Cloud Terrace in horizontal level, can not produce cumulative errors equally.

2, the utility model with two kinds of sensor technology integrated uses in The Cloud Terrace, can promote the accuracy that obtains the The Cloud Terrace position and the accuracy of resetting repeatedly, but also substantial leap and development are brought to the application of The Cloud Terrace in the absolute position (for example how many degree of north by east) that can obtain cradle head direction.Add control, can be widely used in the picture control field variable lens.

Description of drawings:

Fig. 1 is the structured flowchart of the utility model The Cloud Terrace, lens location orientator.

Fig. 2 a is the circuit theory diagrams of horizon sensor in the utility model one preferred embodiment.

Fig. 2 b is the circuit theory diagrams of vertical reference in the utility model one preferred embodiment.

Fig. 2 c is the circuit theory diagrams of sensor signal output terminal in the utility model one preferred embodiment.

Fig. 3 is the circuit theory diagrams (microprocessor portion) of the utility model one preferred embodiment.

Fig. 4 is the circuit theory diagrams (signal amplifying part branch) of the utility model one preferred embodiment.

Embodiment:

See also Fig. 1, it is the structured flowchart of the utility model The Cloud Terrace, lens location orientator.As shown in the figure: mainly by horizontal direction magnetoresistive transducer 11, vertical direction obliquity sensor 12, camera lens becomes times feedback signal 13, camera lens zoom feedback signal 14, A/

D converter

21,22,23,24, microprocessor 3, and automatic The Cloud Terrace lens controller 4 formations of controlling comprehensive The Cloud Terrace 51 and auto iris two variable lenses 52; The change of the simulating signal output line of this horizontal direction magnetoresistive transducer 11, vertical direction obliquity sensor 12 and auto iris two variable lenses doubly,

zoom position feedback

13,14 value output lines are connected to the analog input end of microprocessor 3, and this microprocessor 3 is by bus 6 connection The Cloud Terrace lens controllers 4.

This horizontal direction magnetoresistive transducer 11 can adopt twin shaft magnetoresistive transducer or three magnetoresistive transducers of Honeywell.

This vertical direction obliquity sensor 12 can adopt VTI company series obliquity sensor.

This microprocessor 3 can adopt 8,16 or 32-bit microprocessor.

Said bus 6 is RS232 or RS485 bus.

Fig. 2,3, the 4th, the circuit theory diagrams of the utility model one preferred embodiment.As shown in the figure: it comprises Sensor section and has the signal processing of microprocessor.

1, Sensor section (as Fig. 2 a-2c)

See Fig. 2 a, horizontal direction magnetoresistive transducer U1 adopts the HMC1022 twin shaft Magnetic Sensor of Honeywell, also can adopt or three magnetoresistive transducers.When the length direction at the ferrimag strip applies an electric current, if applying magnetic field again, just there is the heterogeneous body phenomenon of magnetic resistance to occur in the ferrimagnet, thereby causes the change in resistance of alloy band self perpendicular to sense of current.HMC1022 twin shaft magnetoresistive transducer is based on this principle and makes.HMC1022 twin shaft magnetoresistive transducer changes field signal into voltage that difference is exported by the wheatstone bridge configuration of 4 elements, can detect the magnetic field that is low to moderate 30 microgasusses.This magnetoresistive transducer has integrated set/reset band, can reduce temperature drift effect, nonlinearity erron and because the existence of highfield causes losing of output signal.Have integrated biasing band, can eliminate the influence that hard iron disturbs.The voltage of HMC1022 twin shaft magnetoresistive transducer difference output amplifies PA0, the PA1 mouth that (as Fig. 4) delivers to the A/D converting analogue input end of microprocessor U2 Atmega16 through operational amplifier MCP602.

See Fig. 2 b, the vertical direction obliquity sensor adopts VTI company series obliquity sensor, and vertical direction obliquity sensor U4 SCA60 quickens to change separately by measuring static weight in the present embodiment, converts the inclination angle to and changes.Measure output transducer inclination and luffing angle with respect to the horizontal plane, export the PA2 mouth that a simulating signal that is directly proportional with the inclination angle is delivered to the A/D converting analogue input end of microprocessor U2 ATmega16.

The change of auto iris two variable lenses doubly, zoom position, camera lens respectively has a value of feedback output U3, U4, delivers to PA3, the PA4 mouth of the A/D converting analogue input end of microprocessor U2 ATmega16.

2,8 of high-performance, low-power consumption AVR microprocessors (as Fig. 3)

Microprocessor U2 adopts Atmel company to have 16KB, 8 AVR microprocessor ATmega16 of In-System Programmable Flash.

The ATmega16 single-chip microcomputer is one of at present up-to-date single-chip microcomputer series, has advantages such as speed height, the interior rich hardware resource of sheet, and the single-chip microcomputer that can be used as truly uses.Its maximum characteristics are low-power consumption and high-speed, and its power-down mode, idle mode to the power consumption under the working method are about 1 μ A-2.5 μ A.This series monolithic adopts Modern microprocessor flowing water pipeline prefetched instruction technology, has eliminated the notion of machine cycle.It is the basic time unit that instruction is carried out with the clock period, and each clock period can be carried out an instruction.Clock frequency adopts 4MHz-8MHz usually, so be 250ns-25ns the shortest instruction time.Under the 12MHz frequency, the handling capacity of instruction is 12MIPS, and this is 12 times of general MCS-51 single-chip microcomputer speed.The AVR serial contains analog comparator, cooperates with the input capture function to carry out multiple simulation control and conversion.It has used for reference the notion of the high speed input and output HSIO and the programmable count array PCA of some type, realized itself input capture, output comparison and pulse-length modulation output function, pulse signal is measured, switching value is controlled on time and the useful tool of some d.c. motor speed governing thereby become.Aspect software development, the AVR single-chip microcomputer includes the flash program storage that capacity do not wait (FlashMemory is called for short Flash), can erasable repeatedly at least 100000 times, be very easy to product development and software modification.Program in the Flash storer can be downloaded by the PC serial, also can write with parallel mode on general writer.

The ATmega16 microprocessor has:

(1) non-volatile program and data-carrier store

The In-System Programmable Flash of 16K byte, the EEPROM of 512 bytes, erasing and writing life: 100000 times.

(2) peripheral hardware characteristics:

Two 8 bit timing device/counters with independent pre-divider and comparator function; 16 bit timing device/counters with pre-divider, comparing function and capture function; Real-time counter RTC with separate oscillators, four-way PWM; 8 tunnel 10 ADC; Two line interfaces of byte-oriented; Compile serial USART for two; Can work in the SP1 serial line interface of main frame/slave mode; Programmable watchdog timer with individual sheets internal oscillator; Analog comparator in the sheet.

The change of the output of the simulating signal of this horizontal direction and vertical direction sensor, auto iris two variable lenses doubly, the output of zoom position value of feedback delivers to the analog input end of microprocessor ATmega16, after the A/D conversion, handling, store, by RS232 or RS485 bus (chip U8-MAX232, U9-MAX485) control pan and camera decoder, thereby reach accurate control The Cloud Terrace, camera lens.

The installable position of the utility model comprises the 1. left side or the right side of protective cover, 2. protective cover inside, and the 3. below of protective cover, the 4. rear portion of protective cover, 5. top, the top of protective cover, etc.

Being preferred embodiment of the present utility model only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be technology category of the present invention.

Claims

1, a kind of The Cloud Terrace, lens location orientator, it is characterized in that: mainly by the horizontal direction magnetoresistive transducer, the vertical direction obliquity sensor has the microprocessor of A/D translation function, and the automatic The Cloud Terrace lens controller formation of controlling comprehensive The Cloud Terrace and auto iris two variable lenses; The change of the simulating signal output line of this horizontal direction magnetoresistive transducer, vertical direction obliquity sensor and auto iris two variable lenses doubly, zoom position value of feedback output line is connected to the analog input end of microprocessor, and this microprocessor through bus connects The Cloud Terrace lens controller.

2, The Cloud Terrace according to claim 1, lens location orientator is characterized in that: the horizontal direction magnetoresistive transducer adopts twin shaft magnetoresistive transducer or three magnetoresistive transducers of Honeywell.

3, The Cloud Terrace according to claim 1, lens location orientator is characterized in that: this vertical direction obliquity sensor adopts VTI company series obliquity sensor.

4, The Cloud Terrace according to claim 1, lens location orientator is characterized in that: 8,16 of this processor adopting or 32-bit microprocessor.

5, The Cloud Terrace according to claim 1, lens location orientator is characterized in that: said bus is RS232 or RS485 bus.