Range finder with orientation measurement and measurement method thereof
A rangefinder and measurement technology, applied in the field of rangefinders, can solve the problems of inability to measure long distances, unable to obtain accurate data, unable to distinguish noise interference or real signals, etc.
Inactive Publication Date: 2009-04-08
ASIA OPTICAL CO INC
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Problems solved by technology
[0002] In the traditional pulsed laser range finder, when the generated current noise is observed on the time axis, the generated position is about 7 meters to 10 meters, making it impossible to distinguish the noise interference or the real signal below 10 meters
In order to solve this problem, a single comparator can be used to set a large-signal reference voltage. This method can filter out small-signal noise interference, but it will also filter out long-distance small signals, resulting in long-distance inaccessibility. Measure
Please refer to our company's approved patent case 6466307, which is a laser range finder that can accurately measure distance without increasing the sampling frequency, but it is often impossible to obtain accurate data when measuring short and long distances
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[0045] according to figure 1 In the flow shown, firstly, a channel selection circuit sets and executes a comparison circuit, and compares a received signal with a reference voltage (step S102). When the reference voltage is slightly higher than the voltage of the spike noise voltage generated when the transmitter emits a pulse signal; therefore, the spike will be eliminated by the comparison circuit. Next, the emission source emits a pulsed beam to the target (step S104 ), and the target reflects the pulsed beam back. Using the receiver, the pulse beam reflected by the target is received, and corresponding received signals are respectively output to the comparison circuit and the gain circuit (step S106 ). Next, the comparing circuit judges whether the voltage of the received signal has a pulse greater than the reference voltage (step S108 ). When there is a pulse greater than the reference voltage in the received signal, the comparison circuit will output the pulse greater ...
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The invention relates to an ambulatory with azimuthal measurement and its measuring method which comprises a distance detecting unit, an azimuthal measuring unit and a processing unit. Distance detecting unit comprises a emitting source which emits light beam to the object, a light beam receiver which receives the object's reflection and outputs correspondence receiver signal, a impulse comparing circuit which has a reference electric location and can receive the signal to quote weather it has electric location more than reference electric location, and a gain circuit which can receive signal from receiver and amplify and output the correspondence gain signal. Azimuthal measuring unit measures first and second magnetic influence value by a testing azimuth angle. Processing unit obtains the distance between the objects and obtains by the impulse signal or gain signal, and obtains the angle of testing azimuth angle by first and second magnetic influence value.
Description
Technical field: [0001] The invention relates to a range finder, in particular to a range finder with both long-distance measurement and azimuth measurement capabilities. Background technique: [0002] In the traditional pulsed laser range finder, when the generated current noise is observed on the time axis, the generated position is about 7 meters to 10 meters, making it impossible to distinguish the noise interference or the real signal below 10 meters. In order to solve this problem, a single comparator can be used to set a large-signal reference voltage. This method can filter out small-signal noise interference, but it will also filter out long-distance small signals, resulting in long-distance inaccessibility. Measure. Please refer to our company's approved patent case 6466307, which is a laser range finder that can accurately measure distance without increasing the sampling frequency, but it often cannot obtain accurate data when measuring short and long distances. ...
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IPC IPC(8): G01C17/38G01S17/42
Inventor 黄瑞峰钟隆斌杨国华林艾玲
Owner ASIA OPTICAL CO INC