CN216956363U

CN216956363U - Laser range finder

Info

Publication number: CN216956363U
Application number: CN202122409297.5U
Authority: CN
Inventors: 马坤
Original assignee: Shenzhen Yongji Construction Engineering Inspection Co ltd
Current assignee: Shenzhen Yongji Construction Engineering Inspection Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-07-12
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to a laser range finder, which comprises a range finder body, wherein a humidity sensor used for detecting the humidity at the range finder body and forming a detection signal is arranged on the range finder body, a time base integrated circuit used for receiving the detection signal and outputting an oscillation signal is coupled to the humidity sensor, an indicating circuit used for receiving the oscillation signal and outputting an indicating signal is coupled to the time base integrated circuit, a power supply circuit used for supplying power to the humidity sensor, the time base integrated circuit and the indicating circuit is arranged on the range finder body, and an alarm circuit used for receiving the oscillation signal and outputting an alarm signal is coupled to the time base integrated circuit. The utility model has the effects of displaying the humidity of the distance measuring instrument body and alarming when the humidity is too high so as to warn an operator to place the distance measuring instrument body in a dry place to protect the distance measuring instrument body from being damaged.

Description

Laser range finder

Technical Field

The utility model relates to the technical field of laser tools, in particular to a laser range finder.

Background

The laser distance measuring instrument is divided into a phase method distance measuring instrument and a pulse method distance measuring instrument according to a distance measuring method, wherein the pulse type laser distance measuring instrument emits a beam or a sequence of short pulse laser beams to a target when in work, a photoelectric element receives the laser beams reflected by the target, a timer measures the time from the emission to the reception of the laser beams, and the distance from an observer to the target is calculated. The phase method laser range finder detects a distance by detecting a phase difference occurring when a transmitted light and a reflected light propagate in a space.

Current laser range finder does not generally all have waterproof function, can face moist weather or touch the place that has water when laser range finder uses usually, then leads to laser range finder easily to produce the damage, is unfavorable for laser range finder's permanent use.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a laser rangefinder having the effect of automatically detecting the humidity of the laser rangefinder and alerting an operator to place the laser rangefinder at a dry place to prolong the service life of the laser rangefinder.

The above object of the present invention is achieved by the following technical solutions:

a laser range finder comprises a range finder body, wherein a humidity sensor used for detecting humidity at the range finder body and forming a detection signal is arranged on the range finder body, a time base integrated circuit used for receiving the detection signal and outputting an oscillation signal is coupled to the humidity sensor, an indicating circuit used for receiving the oscillation signal and outputting the indicating signal is coupled to the time base integrated circuit, a power supply circuit used for supplying power to the humidity sensor, the time base integrated circuit and the indicating circuit is arranged on the range finder body, and an alarm circuit used for receiving the oscillation signal and outputting an alarm signal is coupled to the time base integrated circuit.

Through adopting above-mentioned technical scheme, humidity transducer detects the humidity of the distancer body, thereby time base integrated circuit department can detect the change when the humidity height changes, and shows humidity degree through indicating circuit, then alarm circuit output alarm signal of the benchmark value that humidity influences the distancer body at that time to be convenient for operating personnel knows the humidity of the distancer body and remind operating personnel to place the distancer body in the dry department and dehumidify the processing, thereby prolong the life of the distancer body.

The utility model is further configured to: the alarm circuit includes: a comparison unit, coupled to the time-base integrated circuit, for receiving the oscillation signal and outputting a comparison signal; the control unit is coupled with the comparison unit to receive the comparison signal and output a control signal; and the alarm unit is coupled with the control unit to receive the control signal and output an alarm signal.

Through adopting above-mentioned technical scheme, the humidity that humidity transducer detected is compared through the comparing element, and when the humidity that detects was higher than the humidity reference value, the control unit output control signal was to alarm unit in order to output alarm signal to warning operating personnel places the distancer body in dry department, is favorable to protecting the distancer body and avoids damaging.

The utility model is further configured to: the time base integrated circuit is an NE555 type time base integrated circuit.

By adopting the technical scheme, the NE555 time base integrated circuit is convenient for detecting the humidity change accurately and obviously on one hand, and the NE555 time base integrated circuit is easy to operate and simple to realize on the other hand.

The utility model is further configured to: the indication circuit includes: the second capacitor, the third capacitor, the fourth capacitor, the second diode, the voltmeter, the third resistor and the rheostat; the second capacitor is connected with the second diode in series, the other end of the second capacitor is connected with the time-base integrated circuit, and the other end of the second diode is grounded; one end of the third capacitor is connected between the second capacitor and the time-base integrated circuit, and the other end of the third capacitor is grounded; the fourth capacitor is connected with the second diode in parallel, one end of the voltmeter is coupled between the second capacitor and the fourth capacitor, the other end of the voltmeter is connected with the rheostat, the rheostat is connected with the third resistor in series, the other end of the third resistor is grounded, and the other end of the rheostat is grounded.

By adopting the technical scheme, the oscillation signal output by the time base integrated circuit is converted into a voltage value through the second capacitor, the third capacitor, the fourth capacitor and the second diode, and meanwhile, the negative pole potential of the voltmeter can be adjusted according to the resistance value of the adjustable rheostat, so that the humidity change is obvious, and the voltmeter displays the change of the connection humidity of an operator.

The utility model is further configured to: the comparison unit comprises a fifth resistor, a sixth resistor and a comparator; the fifth resistor is connected with the sixth resistor in series, the other end of the fifth resistor is connected with the power supply, and the other end of the sixth resistor is grounded; the non-inverting input end of the comparator is coupled to the time base integrated circuit; the inverting input end of the comparator is coupled between the fifth resistor and the sixth resistor; the output end of the comparator is coupled with the control unit.

By adopting the technical scheme, when the voltage value output by the time base integrated circuit is higher than the voltage value of the sixth resistor, the comparator outputs a high level, otherwise, a low level is output, and therefore the humidity is simpler.

The utility model is further configured to: the control unit includes: a first triode and a relay; the base electrode of the first triode is coupled with the output end of the comparator; the collector of the first triode is coupled with the coil of the relay and then is connected with a power supply; the normally open contact of the relay is coupled with the alarm unit; and the emitter of the first triode is grounded.

By adopting the technical scheme: after the base electrode of the first triode is connected with the high level after the comparator outputs the high level, the first triode is conducted to electrify the coil of the subsequent electric appliance, the normally open contact of the relay is closed, the alarm unit is started, and therefore the alarm unit is easy to open and close.

The utility model is further configured to: the alarm unit includes: the audio oscillator, the second triode and the buzzer; the controlled end of the audio oscillator is coupled with a normally open contact of the relay; the base electrode of the second triode is coupled with the output end of the audio oscillator; the collector electrode of the second triode is coupled with the buzzer and then is connected with a power supply; and the emitter of the second triode is grounded.

Through adopting above-mentioned technical scheme, audio oscillator output high-low alternating voltage after the normally open contact of relay is closed to make the second triode discontinuity switch on, the buzzer sends discontinuous chimes of doom, so that remind operating personnel stable.

The utility model is further configured to: mounting groove has been seted up to distancer body back, humidity transducer is fixed to be inserted the mounting groove.

Through adopting above-mentioned technical scheme, humidity transducer installs in the mounting groove at distancer body back to it is more accurate to make humidity transducer detect, and does not influence holistic sense of holding.

In conclusion, the beneficial technical effects of the utility model are as follows:

1. humidity transducer detects the humidity of the distancer body, thereby time base integrated circuit department can detect the change when the humidity height changes, and shows humidity degree through indicating circuit, then alarm circuit output alarm signal is influenced to the benchmark value that humidity influences the distancer body at that time to in operating personnel know the humidity of the distancer body and remind operating personnel to place the distancer body in the dry department and dehumidify the processing, thereby prolong the life of the distancer body.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a circuit schematic of an embodiment of the utility model.

Reference numerals: 1. a rangefinder body; 11. mounting grooves; 2. a humidity sensor; 3. a time base integrated circuit; 4. an indication circuit; 5. a power supply circuit; 6. an alarm circuit; 61. a comparison unit; 62. a control unit; 63. and an alarm unit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the laser range finder disclosed by the utility model comprises a range finder body 1, wherein a mounting groove 11 is formed in the back of the range finder body 1, and a humidity sensor 2 inserted into the mounting groove 11 is arranged on the range finder body 1, so that the humidity sensor 2 on the range finder body 1 can detect more accurately.

The humidity sensor 2 is used for detecting humidity at the distance measuring instrument body 1 and forming a detection signal, the humidity sensor 2 is coupled with a time base integrated circuit 3 which is used for receiving the detection signal and outputting an oscillation signal, the time base integrated circuit 3 is coupled with an indicating circuit 4 which is used for receiving the oscillation signal and outputting an indicating signal, the indicating circuit 4, the time base integrated circuit 3 and the humidity sensor 2 are coupled with a power circuit 5 which is used for providing electric energy, and the power circuit 5 is used for supplying power to the indicating circuit 4, the time base integrated circuit 3 and the humidity sensor 2 so as to enable the distance measuring instrument body 1 to operate normally. The time base integrated circuit 3 is coupled with an alarm circuit 6 which receives the oscillation signal and outputs an alarm signal, the humidity sensor 2 detects the humidity to the time base integrated circuit 3, and if the humidity is too high, the indication circuit 4 displays the humidity value and the alarm circuit 6 starts alarming.

The alarm circuit 6 includes: the clock signal generating circuit comprises a comparison unit 61, a control unit 62 and an alarm unit 63, wherein the comparison unit 61 presets a voltage reference value and is coupled to the time-base integrated circuit 3 to receive the oscillation signal and output a comparison signal, the control unit 62 is coupled to the comparison unit 61 to receive the comparison signal and output a control signal, and the alarm unit 63 is coupled to the control unit 62 to receive the control signal and output an alarm signal.

The time base integrated circuit 3 is an NE555 type time base integrated circuit 3, and the NE555 type time base integrated circuit 3 comprises: the temperature sensor comprises a 555 chip, a first resistor R1, a second resistor R2 and a first capacitor C1, wherein a seventh pin of the 555 chip is coupled to the first resistor R1 and then connected with a power supply, a second pin of the 555 chip is coupled to a sixth pin and then connected to the second resistor R2 and then connected to the first resistor R1 and the seventh pin of the 555 chip, one end of the temperature sensor is coupled to the other end of the second pin of the 555 chip and then coupled to the ground, and one end of the first capacitor C1 is connected to the fifth pin of the 555 chip and then coupled to the ground. The indication circuit 4 includes: the voltage meter comprises a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a second diode VD2, a voltage meter, a third resistor R3 and a rheostat RP, wherein the second capacitor C2 is connected with the second diode VD2 in series, the other end of the second capacitor C2 is connected with the time base integrated circuit 3, the other end of the second diode VD2 is grounded, one end of the third capacitor C3 is connected between the second capacitor C2 and the time base integrated circuit 3 and the other end is grounded, the fourth capacitor C4 is connected with the second diode VD2 in parallel, one end of the voltage meter is coupled between the second capacitor C2 and the fourth capacitor C4 and the other end is connected with the rheostat RP, the rheostat RP is connected with the third resistor R3 in series, the other end of the third resistor R3 is grounded, and the other end of the rheostat is grounded. The power supply circuit 5 includes: fifth electric capacity C5, first diode VD1, fourth resistance R4 and power, fifth electric capacity C5 and first diode VD1 are parallelly connected, and fourth resistance R4 is coupled and connects the positive pole of power behind connecting between fifth electric capacity C5 and first diode VD 1. The multivibrator is composed of an NE555 type time-base integrated circuit 3, wherein the humidity sensor 2 adopts a capacitance type humidity sensor 2, a voltmeter is a 0-2.5V direct current voltmeter, when the capacitance type humidity sensor 2 detects, the larger the humidity at the distance measuring instrument body 1 is, the larger the capacitance of the humidity sensor 2 is, so that the oscillation frequency of the multivibrator is higher, therefore, the voltage displayed by the voltmeter is also higher, and if the humidity of the distance measuring instrument body 1 is smaller, the capacitance of the sensor is reduced, so that the oscillation frequency of the multivibrator is reduced, therefore, the voltage displayed by the voltmeter is also reduced. During the circular telegram during operation, adjust the resistance of rheostat RP, the negative pole voltage of adjustable direct voltage meter makes it equal to the initial voltage on its positive pole to normally observe the change of humidity, thereby lie in that operating personnel knows the humidity that distancer body 1 is located and place distancer body 1 in dry place, prevent that distancer body 1 from damaging.

The comparison unit 61 includes: the voltage regulator comprises a fifth resistor R5, a sixth resistor R6 and a comparator A, wherein the fifth resistor R5 and the sixth resistor R6 are connected in series, the other end of the fifth resistor R5 is connected with a power supply, the other end of the sixth resistor R6 is grounded, the non-inverting input end of the comparator A is coupled to the output end of the 555 chip, the inverting input end of the comparator A is coupled between the fifth resistor R5 and the sixth resistor R6, the output end of the comparator A is coupled to the control unit 62, and when the voltage value output by the 555 chip is higher than the voltage value output by the sixth resistor R6, the comparator A outputs a high level.

The control unit 62 includes: the base electrode of the NPN first triode Q1 and the relay KM, the base electrode of the NPN first triode Q1 is coupled to the output end of the comparator a, the collector electrode of the NPN first triode Q1 is coupled to the coil of the relay KM and then connected to the power supply, the normally open contact of the relay KM is coupled to the alarm unit 63, and the emitter electrode of the NPN first triode Q1 is grounded. The alarm unit 63 includes: the controlled end of the audio oscillator is coupled to the normally open contact of the relay KM, the base of the NPN second triode Q2 is coupled to the output end of the audio oscillator, the collector of the NPN second triode Q2 is coupled to the rear of the buzzer H and then connected with a power supply, and the emitter of the NPN second triode Q2 is grounded. When the comparator A outputs a high level, the NPN first triode Q1 is conducted, then the coil of the relay KM is switched on, the normally open contact is closed, the audio oscillator is switched on, and then the oscillation signal of a square wave is output, and the NPN second triode Q2 is switched on and off intermittently, so that the buzzer H sends intermittent alarm sound, the over-high humidity of the distance measuring instrument body 1 is warned to alarm an operator and is placed in a dry place to be dehumidified, and the normal work of the distance measuring instrument body 1 is guaranteed.

The implementation principle of the embodiment is as follows: humidity transducer 2 places in mounting groove 11, when humidity transducer 2 detects more greatly, then humidity transducer 2's capacitance value is bigger, then it is higher to make multivibrator's oscillating frequency, therefore the voltage that the voltmeter shows is higher, voltage value when outputting is higher than the voltage value of sixth resistance R6, then comparator A outputs the high level, switch on after NPN first triode Q1 inserts the high level, the normally open contact is closed after relay KM's coil circular telegram, then output square wave's oscillating signal to NPN second triode Q2 after the audio oscillator circular telegram, NPN second triode Q2 discontinuity break-make, thereby make buzzer H discontinuity open and close and place the dry place and carry out dehumidification processing in the dry place with warning operating personnel to the distancer body 1 that humidity is too high, thereby prevent that distancer body 1 from damaging in order to prolong distancer body 1's life. When the humidity sensor 2 detects a small humidity, the smaller the capacitance of the humidity sensor 2 is, so that the oscillation frequency of the multivibrator output is lowered, and therefore the voltage displayed by the voltmeter is also lowered, so that the operator can know the humidity level at the rangefinder body 1.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. A laser distance measuring instrument comprises a distance measuring instrument body (1), and is characterized in that a humidity sensor (2) used for detecting humidity at the distance measuring instrument body (1) and forming a detection signal is arranged on the distance measuring instrument body (1), a time base integrated circuit (3) used for receiving the detection signal and outputting an oscillation signal is coupled to the humidity sensor (2), an indicating circuit (4) used for receiving the oscillation signal and outputting the indicating signal is coupled to the time base integrated circuit (3), a power supply circuit (5) used for supplying power to the humidity sensor (2), the time base integrated circuit (3) and the indicating circuit (4) is arranged on the distance measuring instrument body (1), and an alarm circuit (6) used for receiving the oscillation signal and outputting an alarm signal is coupled to the time base integrated circuit (3).

2. Laser rangefinder according to claim 1, characterized in that the alarm circuit (6) comprises: a comparison unit (61) coupled to the time-base integrated circuit (3) for receiving the oscillation signal and outputting a comparison signal;

a control unit (62) coupled to the comparison unit (61) for receiving the comparison signal and outputting a control signal;

and the alarm unit (63) is coupled to the control unit (62) to receive the control signal and output an alarm signal.

3. Laser range finder according to claim 2, characterized in that said time base integrated circuit (3) is an NE555 type time base integrated circuit (3).

4. Laser rangefinder according to claim 1, characterized in that the indication circuit (4) comprises: the second capacitor, the third capacitor, the fourth capacitor, the second diode, the voltmeter, the third resistor and the rheostat are connected in series;

the second capacitor is connected with the second diode in series, the other end of the second capacitor is connected with the time-base integrated circuit (3), and the other end of the second diode is grounded;

one end of the third capacitor is connected between the second capacitor and the time base integrated circuit (3), and the other end of the third capacitor is grounded;

the fourth capacitor is connected with the second diode in parallel, one end of the voltmeter is coupled between the second capacitor and the fourth capacitor, the other end of the voltmeter is connected with the rheostat, the rheostat is connected with the third resistor in series, the other end of the third resistor is grounded, and the other end of the rheostat is grounded.

5. A laser rangefinder according to claim 2, characterized in that the comparing unit (61) comprises a fifth resistor, a sixth resistor and a comparator;

the fifth resistor is connected with the sixth resistor in series, the other end of the fifth resistor is connected with the power supply, and the other end of the sixth resistor is grounded;

the non-inverting input end of the comparator is coupled with the time base integrated circuit (3);

the inverting input end of the comparator is coupled between the fifth resistor and the sixth resistor;

the output of the comparator is coupled to a control unit (62).

6. Laser rangefinder according to claim 5, characterized in that the control unit (62) comprises: a first triode and a relay;

the base electrode of the first triode is coupled with the output end of the comparator;

the collector of the first triode is coupled with the coil of the relay and then is connected with a power supply;

the normally open contact of the relay is coupled with an alarm unit (63);

and the emitter of the first triode is grounded.

7. Laser distance meter according to claim 6, characterized in that said alarm unit (63) comprises: the audio oscillator, the second triode and the buzzer;

the controlled end of the audio oscillator is coupled with a normally open contact of the relay;

the base electrode of the second triode is coupled with the output end of the audio oscillator;

the collector electrode of the second triode is coupled with the buzzer and then is connected with a power supply;

and the emitter of the second triode is grounded.

8. The laser range finder according to claim 1, characterized in that the range finder body (1) is provided with a mounting groove (11) at the back, and the humidity sensor (2) is fixedly inserted into the mounting groove (11).