RU1912U1 - PORTABLE Sounder - Google Patents

Abstract

1. A PORTABLE ECHO SOUNDER, comprising a series-connected cycle generator, a sending pulse generator, a power amplifier, a counting pulse generator and an antenna connected also to the echo amplifier, and a depth indicator, characterized in that the output of the echo amplifier is connected to the standby multivibrator through a threshold device, the output of the standby multivibrator is connected to the inputs of the counter pulse generator and the switching unit, the output of the counter pulse generator is connected to the first input of the shift register, the output the loop generator is connected to the control inputs of the temporary automatic gain control unit, the delay unit and the pulse shaper, two outputs of which are connected to the corresponding second and third inputs of the shift register, the output of the temporary automatic gain control unit is connected to the second control input of the echo amplifier, the output of the delay unit is connected to the second input of the standby multivibrator and the second input of the counting pulse generator, the outputs of the shift register are connected in series through bl to switch the inputs glubiny.2 indicator LEDs. The echo sounder according to claim 1, characterized in that the delay unit contains three waiting multivibrators, the inputs of which are interconnected, and the outputs through the switches are connected to the corresponding inputs of the OR circuit, the output of which is the output of the unit. 3. An echo sounder according to claim 1, characterized in that a switch is installed between the block of temporary automatic adjustment of echo amplification.

Description

Portable echo sounder.

The utility model is designed to measure the distance to an object under water, in some cases to measure the depth of the reservoir using the reflection of sound waves.

A known echo sounder containing a serially connected control unit and a unit for generating pulse pulses, as well as an emitter, pulse receivers, a unit for measuring time intervals, a cochutator and a counting-decisive block / a.cj 878042, 1979, O-015 15/00 /. However, in the known sounder insufficient accuracy of depth measurement and high current consumption.

A portable echo sounder designed for fishermen is known, made in the form of an electronic unit and an antenna, comprising an emitter that generates powerful vibrations directed vertically downward, a receiver that switches on after a set time, receives an echo signal, an echo signal amplifier, and a depth indicator. .Taratorkin Instruments for yachts.

and boats p. 94. / Svz /

Closest to the technical nature of the claimed echo sounder of an amateur fisher / f.Radio MO, 1988, p. 32-36 /. The device contains a series-connected cycle generator, a sending pulse forming unit, a POWER amplifier, an antenna, an echo signal amplifier, a digital meter of a GJQ-bin, and a depth indicator. The device operates as follows: the cycle generator controls the interaction of the device nodes and ensures its operation in automatic mode. The clock pulse of the cycle generator starts the block for forging the sending pulses and, with the help of the power amplifier to the antenna, radiates in the direction of 3 (

im. G-01.515 / 08

i 44i41 the bottom of the bottom is a short ultrasonic probe pulse, at the end of the transmitter's operation it opens and acquires normal sensitivity. An echo reflected from the bottom is received by the antenna E after amplification in the echo amplifier controls a digital depth meter. Counter indicators highlight the measured depth. The device is powered by one autonomous voltage source and has a solid current consumption, which limits the time of continuous operation. Digital indicators often require additional illumination at night, which also increases energy consumption and creates inconvenience.

The proposed design of the utility model is aimed at lower power consumption, improving the usability and reliability of the device.

This is achieved by the fact that in the echo sounder, it contains: “We connect the cycle generator, the pulse generation block, the power amplifier and the antenna, connected also to the echo signal amplifier, and the depth indicator, according to the improvement, the output of the echo signal amplifier is connected to the standby / oglivibrator via a threshold device , the output of the waiting multivibrator is connected to the inputs of the counting generator and the switching unit, the output of the counting pulse generator is connected to the first input of the shift register, the output is the generator the torus of the cycle is connected to the control inputs of the temporary automatic gain control unit, the charging unit and the pulse shaper, the two outputs of which are connected to the corresponding second and third inputs of the shift register, the output of the temporary automatic gain control unit is connected to the BTOpow input of the echo amplifier, the output of the delay unit is connected to the second d to the input of the standby multivibrator and secondly to the input of the counter pulse generator, the outputs of the shift register are connected in series through the com / excitation unit to the inputs and LED depth indicator.

In addition, the delay unit о о holds three waiting in the ultivibrator, the inputs of which are interconnected, and the outputs through the switches are connected to the corresponding inputs of the circuit SHE1, the output of which is the output of the unit.

In addition, a switch is installed between the temporary automatic gain control unit and the echo signal amplification unit, which, when the echo sounder operates in air, disconnects the time chain of the Hot adjustment due to the absence of the volume reverb phenomenon.

The sounding of ultrasonic pulses is carried out using a power amplifier and an antenna, to which pulses with filling are generated, formed by the sending pulse generating unit by the command of the cycle generator.

The received signals are amplified by an amplifier, the gain of which is regulated in time of the cycle by temporary automatic adjustment. amplification according to the law of decay of the echo signal in order to reduce the effect of the overall reverb. The threshold device is triggered when the echo exceeds the interference level. Coma11DE of the ikshulsa shaper triggers a humming multivibrator if there is no prohibition of operation from the delay unit. The delay tree sets the time zone for inhibiting the echo sounder indication. On the one hand, the command from the waiting mutivibrator allows the indication of the distance to the object, on the other hand, prohibits the operation of the counter pulse generator to the shift register.

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1, laced in its first cell at the beginning of the cycle. By the command of the} running multivibrator, which is formed when the echo arrives, the shift stops and the indicator LED lights up for a short time, which indicates the distance to the object. This construction of the circuit, especially the blocks associated with the indication allows you to organize low power consumption, which is tidy for portable devices. At the same time, the convenience of using this type of indication when one LED on the BpeivM lights up while waiting for a multivibrator practically does not decrease.

In the particular case of performing an echo sounder, the delay unit contains three closed g, 1 multivibrators, which are equipped with switches. Such a device unit allows you to use the echo sounder for different ranges of distances / depths / without complicating the device without reducing the overall accuracy.

In addition, the temporary automatic gain control can be turned off by a switch installed between the unit and the echo amplifier. This is important in the air sounder test mode when there is no reverb noise.

Figure 1 presents the structural diagram of the proposed portable fish finder.

The device contains a cycle 1 generator connected in series with the block of formation and the pulse of the package 2, power amplifier 3 and antenna 4, which is also connected to | echo signal amplifier 5. The output of the echo amplifier is connected in series with a threshold device 9, waiting for multivibrator 5. The output of the standby multivibrator is connected to the inputs of the counting pulse generator and the scheduling unit /, the output of the counting pulse generator is connected to the input of the shift register / 3. The output of the cycle generator 1 is connected to the control inputs of the temporary automatic gain control unit 5

f 1

/ VARU /, delay unit / and pulse shaper /,, the two outputs of which are connected to the corresponding inputs of the shift register / 3. The output of the VARU C block is connected to the second input of the echo signal amplifier 5. The output of the Zerzkki block / О is connected to the BTOpoNQT input of the waiting 1-st ultivibrator and the second input of the counter-pulse generator 3. The outputs of the shift register / J are connected in series through the switching unit / with the inputs of the LED depth indicator /. The delay unit / contains three waiting multivibrators 1,2,3, the inputs of which are interconnected, and the outputs through the switches A, S2 are connected to the corresponding inputs of the circuit whose output is the output of the delay unit. Between the block and the block of the amplifier of the echo signals 5 mounted switch hG4.

The device works as follows: the operation of the entire synchronization device | is generated by a cycle 1 generator, which generates a video pulse with a repetition period s. Along the frontal front of this needle pulse, the probe pulse forming unit generates a radio pulse. Further, this pulse is supplied to the amplifier; power 3 and radiated by antenna 4 towards the bottom of the water area. The echo signal reflected from the bottom is amplified by the amplifier of the echo signals up to the value necessary for the actuating part of the echo sounder to operate, its envelope entering the threshold device is allocated. To exclude the influence of near volumetric reverberation and interference, emissions of which can cause Bjiii T: -to trigger the echo sounder's executive part, the threshold device f sets the response threshold according to the level of interference / noise, reverberation / and a pulse is generated along the edge of the echo signal. In the executive part of the echo sounder / blocks Y..15 / the interval of delay of the echo signal relative to the sending is filled with the pulse of the generator of counted I1 pulses.

The entire interval for measuring depth is divided into three ranges. At the same time, an IV / N pulse is generated at the output edge of the feed pulse at the output of the waiting multivibrator 1 of the delay unit, which, through the l-UEI // circuit, prohibits for this time the operation of the wait-and-go of the vibrator V and the operation of the counter pulse generator 5. At the end of the pulse of the reaping multivibrator 1 of the delay unit, the standby multivibrator S is released, the counting pulse generator X starts working.If the measurement is in a different range, the / S2 switch closes, while the pulse duration prohibiting the operation of the waiting multivibrator 8 and the operation of the counting pulse generator5 increases . The counting pulse generator 5 starts to work at the end of the pulse of the waiting multivibrator 2 block delay. If the US switch is closed, the duration of the locking ml pulse at the output of MJOi // is still increased,

The measured depth is measured as follows: when a package is emitted, the shift register / 3 is reset to zero, and a unit with a small delay through the pulse generator / 1 is entered into its first digit. When the counting pulse generator 5 is turned on, the counting pulses are fed to the input of the shift register / 3, while the unit recorded in the first bit of this register is moved along the shift register / 3 by each pulse of the counting and pulse generator for 1 bit. All outputs of the shift register triggers through the key elements of the switching unit are connected to the corresponding LEDs. When the echo arrives, the waiting multivibrator is triggered, the counting pulse generator is braked, fed from the standby multivibrator S to the key elements of the switching unit

I5 h m

Heirfife is connected to the corresponding outputs of the ultrasound shift register. At the same time, it flashes for a time determined by the pulse duration of the waiting multivibrator of the LED discharge of the shift register / d, in which 1 stopped, moved along the register / 3 by the clock pulses of the generated counting pulses. Thus, the number of pulses of the generator is me: by sending and receiving echo signals, it moves the unit by the corresponding number of bits of the shift register / 3, when the echo arrives, the arrival of the shift / clock / pulses of the counter of pulse counters to the clock input of the shift register of the ultrasound stops and the outputs of the shift register / 3 for 0.03 s the EEmy opQi 4 iS} mii LEDs are connected} mii The flash time of the LEDs - 0.03 s is established experimentally and is quite enough for the user to perceive.

During the control test of the echo sounder in air, the VARU 6 circuit is disconnected with the vS4 switch. In this case, distance measurement is possible at small distances.

The proposed development of a portable echo sounder provides reliable discrete indication of the depth of the water area, low current consumption.

Claims (3)

1. A PORTABLE ECHO SOUNDER, comprising a series-connected cycle generator, a sending pulse generator, a power amplifier, a counting pulse generator and an antenna connected also to the echo amplifier, and a depth indicator, characterized in that the output of the echo amplifier is connected to the standby multivibrator through a threshold device, the output of the standby multivibrator is connected to the inputs of the counter pulse generator and the switching unit, the output of the counter pulse generator is connected to the first input of the shift register, the output the loop generator is connected to the control inputs of the temporary automatic gain control unit, the delay unit and the pulse shaper, two outputs of which are connected to the corresponding second and third inputs of the shift register, the output of the temporary automatic gain control unit is connected to the second control input of the echo amplifier, the output of the delay unit is connected to the second input of the standby multivibrator and the second input of the counting pulse generator, the outputs of the shift register are connected in series through bl switching to a depth indicator LEDs inputs.  2. The echo sounder according to claim 1, characterized in that the delay unit contains three standby multivibrators, the inputs of which are interconnected, and the outputs through the switches are connected to the corresponding inputs of the OR circuit, the output of which is the output of the unit.  3. The echo sounder according to claim 1, characterized in that a switch is installed between the block of temporary automatic adjustment of echo amplification.