CN210051902U

CN210051902U - Power-saving type line finder host circuit

Info

Publication number: CN210051902U
Application number: CN201920872061.5U
Authority: CN
Inventors: 王亚洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-02-11
Anticipated expiration: 2029-06-12

Abstract

The utility model provides a power saving type line finder host computer circuit, this kind of circuit can reduce power consumption, involve integrated circuit technical field, comprise power, low frequency square wave module, triode switch circuit, audio module, carrier module, modulation module. The low-frequency square wave module is used for generating low-frequency square waves and outputting signals to the switching triode so as to control the on-off of the other modules; the audio module is used for outputting audio signals required by the line patrol device; the carrier module is responsible for generating radio frequency signals with certain frequency for modulation; the modulation module carries the audio signal to the radio frequency to finally form an output signal. The utility model discloses a reduce the duty cycle of signal, very big loss speed that has slowed down the battery.

Description

Power-saving type line finder host circuit

Technical Field

The utility model relates to an integrated circuit technical field especially involves seeker circuit.

Background

The finder is an instrument for quickly finding a target cable in a plurality of unmarked cables by utilizing a radio frequency technology in the comprehensive wiring engineering. The principle is that the output signal of the audio generation module is modulated to radio frequency, and a conductor in a cable is used as a transmitting antenna to transmit a wireless signal. On the receiving instrument, different sounds are emitted according to the intensity of the received signals, and the cable position can be rapidly determined. In such a device, for convenience of carrying, a 9V stacked battery is generally used, and has a small capacity, so that dry electricity is easily consumed in use, and inconvenience is caused to construction. In the past, the radio waves are sent to the outside continuously, but according to the use experience, the frequency of making sound in one second is not less than two times, so that the use efficiency is not influenced, and the energy radiated to the outside in the rest time is wasted.

Disclosure of Invention

The utility model discloses aim at carrying out appropriate improvement to prior art, provide a line finder circuit that the energy consumption is lower.

Power-saving type seeker host circuit includes: the device comprises a low-frequency square wave module, a triode switch circuit, an audio module, a carrier module, a modulation module and a power supply.

The power respectively with triode collector with the low frequency square wave module links to each other, low frequency square wave module signal output end links to each other with resistance R0, the resistance R0 other end respectively with triode base and resistance R1 link to each other, the triode projecting pole respectively with the audio frequency module with the carrier module is connected, the audio frequency module output with the carrier output all is connected with the modulation module, the modulation module output is connected with the signal output interface, each module and the R1 other end all are connected with the ground wire.

The utility model discloses the beneficial effect who reaches lies in, prior art compares, owing to designed low frequency square wave generation module with triode switch circuit makes the circuit has only reduced the duty cycle of circuit at the outside radiation signal of limited time, when not influencing the availability factor, has reduced energy loss.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. For convenience of description, the drawings only show a part, but not all, of the structure related to the present invention, and the switching transistor in the drawings is an NPN type transistor, and in practical applications, a PNP type transistor may also be used.

The power saving type host circuit of the seeker includes, as shown in fig. 1: the device comprises a low-frequency square wave module, a triode switch circuit, an audio module, a carrier module, a modulation module and a power supply.

As shown in fig. 1, the transistor switching circuit includes a switching transistor Q1, a current limiting resistor R0, and a pull-down resistor R1.

The low-frequency square wave generation module outputs a square wave voltage Vin, the Vin is a driving signal for switching the action of the triode, and in order to effectively save electric quantity and not to influence the working efficiency, the duty ratio of the Vin is between 0.5 and 0.15. The input voltage Vin controls the open and close action of the triode, when Vin is at high level, the triode generates base current Ib, correspondingly, the collector generates amplified current Ic, the load circuit is conducted, and the line finder radiates electric waves outwards. When Vin is at low level, the base current Ib of the transistor is cut off, and accordingly the collector current Ic is also cut off, and the finder stops radiating energy outwards. In order to protect the low-frequency square wave generation module, a resistor R0 is connected between the base and the square wave generation module in series, and in order to effectively cut off the triode when the base is at low level, a resistor R1 is connected between the base and the ground in series.

The description of the embodiments provided above is merely illustrative of preferred embodiments of the present invention, and one skilled in the relevant art can implement or use the present invention based on the description above; without departing from the technical principle of the utility model, a plurality of improvements and deformations can be made. Any invention that does not depart from the gist of the invention is intended to be within the scope of the invention.

Claims

1. Power-saving type line finder host computer circuit, its characterized in that: the audio frequency modulation device comprises a power supply, a low-frequency square wave module, a triode switching circuit, an audio frequency module, a carrier module and a modulation module, wherein the triode switching circuit comprises a switching triode Q1, a current limiting resistor R0 and a pull-down resistor R1. The power supply is respectively connected with a collector of the switching triode Q1 and the low-frequency square wave module, a signal output end of the low-frequency square wave module is connected with the current-limiting resistor R0, the other end of the current-limiting resistor R0 is respectively connected with a base of the switching triode Q1 and the pull-down resistor R1, an emitter of the switching triode Q1 is respectively connected with the audio module and the carrier module, an output end of the audio module and an output end of the carrier are both connected with the modulation module, and all the modules except the power supply are connected with a power grounding end.