Handheld transmitter

Abstract

The invention relates to a handheld transmitter, belonging to the technical field of the electrocommunication and aiming at solving the technical problems that the prior product has large volume, small distance measurement range and poor precision, etc. A carrier frequency signal source is connected with a phase-locked loop; one output end of the phase-locked loop is connected with one input end of a voltage-controlled oscillator (VCO), and the other output end is connected in series with a low-pass filter and then is connected with the other input end of the VCO; the output end of the VCO isconnected with one input end of a modulator; one output end of a synchronizing signal generator is connected in series with a PN code generator and then is connected with one input end of an xor calculator, and the other output end is connected in series with a modulated data generator and then is connected the other input end of the xor calculator; the output end of the xor calculator is connected with the other input end of the modulator; the output end of the modulator is connected in series with an amplifier and then is connected with one input end of an antenna selection switch; the output end of a switching controller is connected with the other input end of the antenna selection switch; and the output end of the antenna selection switch is connected with an antenna.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a hand-held transmitter for indoor precise positioning and distance measurement. Background technique [0002] Indoor precise positioning and ranging are widely used in the manufacturing and production of industrial enterprises. In addition to being used to measure large-scale equipment, factories, and mobile production lines, such applications in entertainment, games, and other fields are also beginning to show a growing trend. However, the indoor short-distance transmitters and receivers currently on the market mostly use infrared to communicate, and the disadvantages are: [0003] 1. The system volume is large; [0004] 2. The ranging range is small; [0005] 3. Poor accuracy; [0006] 4. Slow response speed; [0007] 5. Poor anti-interference. [0008] At present, there is no indoor short-distance transmitter and receiver using radio frequency communication. Cont...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to solve the technical problems existing in the existing hand-held transmitter products, such as large system volume, small ranging range, poor precision, and slow response speed, so as to provide a high integration, good anti-interference performance, and corresponding receiving The machine can provide precise positioning and ranging, small size, light weight, large ranging range, high stability and high precision hand-held transmitter

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