CN217007727U - Detection circuit and detection device of receiving device - Google Patents

Abstract

The utility model discloses a detection circuit and a detection device of a receiving device. The detection circuit of the receiving device forms a simple application circuit and convenient operation by combining a detection prompt module, an attenuation infrared emission module and a power supply module. The detection device for the detection of the receiving device directly sends the attenuated infrared IR signal to the receiving device to be detected through the attenuation infrared emission module, and detects whether the low-level signal output by the receiving device to be detected is received through the detection prompt module, because if the detection prompt module is used. The receiving device can receive the infrared IR signal and output a low-level signal correspondingly, indicating that both the receiving function and the transmitting function of the receiving device to be detected can operate normally, avoiding the inconvenience existing in the existing scheme for detecting the receiving device technical problems of inefficiency, inefficiency and high cost.

Description

Detection circuit and detection device of receiving device

technical field

The utility model relates to the field of production detection of a receiving device, in particular to a detection circuit and a detection device of a receiving device.

Background technique

In the electronic manufacturing process of the receiving device, the tester needs to test the semi-finished receiving device to ensure that the receiving device produced in the subsequent production can operate normally. The existing detection scheme for the receiving device is to use an oscilloscope to detect the receiving head of the receiving device. The voltage of the IR signal output pin, the tester judges whether the receiving device to be tested can operate normally by observing the waveform of the oscilloscope.

However, the existing detection scheme of the receiving device requires professional technicians to operate, and there are inconvenience, low efficiency and misjudgment of detection operation, and the cost of the oscilloscope is high, which improves the manufacturer's ability to a certain extent. production expenses.

Utility model content

The main purpose of the present utility model is to propose a detection circuit and a detection device for a receiving device, which aims to solve the technical problems of inconvenience, low efficiency, high misjudgment and high cost in the existing solution for detecting the receiving device. question.

In order to achieve the above purpose, the present invention provides a detection circuit of a receiving device, the detection circuit of the receiving device comprises an attenuation infrared emission module, a detection prompt module and a power supply module;

The power input end of the detection prompt module and the attenuation infrared emission module is connected with the power output end of the power supply module;

The attenuated infrared transmitting module is used to send infrared IR signals to the receiving device;

The detection and prompting module is used to prompt the operator whether the receiving device is in a running state;

The power supply module is used for supplying power to the detection prompt module and the attenuation infrared emission module.

Optionally, the attenuated infrared emission module includes an attenuation resistor, a first triode and an infrared emission diode;

One end of the attenuation resistor is connected to the base of the first triode, and the collector of the first triode is connected to the negative electrode of the infrared emitting diode;

The emitter of the first triode is grounded.

Optionally, the attenuated infrared emission module further includes a control processing chip and a crystal oscillator;

The 1 pin of the crystal oscillator is connected to the first pin of the control processing chip, and the 2 pin of the crystal oscillator is connected to the second pin of the control processing chip;

The third pin of the control and processing chip is connected to the other end of the attenuation resistor.

Optionally, the attenuated infrared emission module further includes a battery and a switch device;

The negative electrode of the battery is grounded, and the positive electrode of the battery is connected to one end of the switching device.

Optionally, the attenuated infrared emission module further includes a first capacitor and a second capacitor;

One end of the first capacitor and the second capacitor is connected in series with the other end of the switching device, and the other end of the first capacitor and the second capacitor is connected in series with the anode of the infrared emitting diode.

Optionally, the detection prompt module includes a second triode and a light-emitting diode;

The collector of the second triode is connected to the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.

Optionally, the detection and prompting module further includes a socket, and the socket includes a VCC pin, a GND pin and a PUT pin;

The socket is used for connecting the detection prompting module and the receiving device.

Optionally, the detection prompt module further includes a Zener diode and a first resistor;

The negative pole of the Zener diode is connected to the PUT pin of the socket, and the Zener diode is connected in series with the first resistor.

Optionally, the detection prompt module further includes a second resistor;

One end of the second resistor is connected to the emitter of the second triode, and the other end of the second resistor is connected between the VCC pin of the socket and the power supply.

This embodiment also provides a detection device, the detection device includes the detection circuit of the receiving device as described above, and the detection circuit of the receiving device includes an attenuation infrared emission module, a detection prompt module, and a power supply module;

The power input end of the detection prompt module and the attenuation infrared emission module is connected with the power output end of the power supply module;

The attenuated infrared transmitting module is used to send infrared IR signals to the receiving device;

The detection and prompting module is used to prompt the operator whether the receiving device is in a running state;

The power supply module is used for supplying power to the detection prompt module and the attenuation infrared emission module.

The technical scheme of the utility model forms a detection device with simple application circuit and convenient operation by combining the detection prompt module, the attenuation infrared emission module and the power supply module. IR signal, through the detection prompt module to detect whether the low-level signal output by the receiving device to be detected is received, because if the receiving device to be detected can receive the infrared IR signal and output a low-level signal correspondingly, it indicates that the receiving device to be detected is receiving the device. Both the function and the sending function can operate normally, which solves the problems of poor performance of the detection receiving device and short receiving distance that cannot be detected. The tester only needs to observe whether the detection prompt module lights up to know whether the receiving device to be detected can operate normally. The technical problems of inconvenience, low efficiency and high cost existing in the existing solutions for detecting the receiving device are solved.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained based on the structures shown in these drawings without any creative effort.

1 is a schematic structural diagram of a detection circuit of a receiving device of the present invention;

FIG. 2 is a schematic diagram of the connection of the internal circuit modules of the detection circuit of the receiving device of the present invention.

Description of reference numbers:

The realization, functional characteristics and key points of the purpose of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, the directional indications are only used to explain a certain posture (such as the accompanying drawings). When the relative positional relationship, movement situation, etc. between the various components shown below), if the specific posture changes, the directional indication also changes accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for the purpose of description, and should not be construed as instructions or Implicit their relative importance or implicitly indicate the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present utility model.

The utility model provides a detection circuit of a receiving device.

In an embodiment of the present invention, as shown in FIG. 1 , the detection circuit of the receiving device includes a detection prompt module 20 , an attenuated infrared emission module 10 and a power supply module 30 ;

The power input terminals of the detection prompt module 20 and the attenuation infrared emission module 10 are connected to the power output terminal of the power supply module 30;

The attenuated infrared transmitting module 10 is used to send the attenuated infrared IR signal to the receiving device. The reason for attenuating the infrared IR signal is because in actual operation, the distance between the receiving device and the transmitter is generally long. In the actual test process, it is obviously unrealistic to design the detection device according to the actual transmission distance in order to simulate the actual transmission distance. Therefore, in order to realize the convenience of the detection device and avoid the There is a misjudgment that the sending and receiving distance is too short. The utility model performs an attenuation operation on the transmitted infrared IR signal to realize the increase of the sending and receiving distance. The existence of the module 10 makes the actual sending and receiving distance up to 8m;

The detection and prompting module 20 is used to supply power to the receiving device after power-on, receive the level signal output by the receiving device, and prompt the operator whether the receiving device can operate normally according to the state of the level signal;

The power supply module 30 is configured to supply power to the detection prompt module 20 and the attenuated infrared emission module 10 .

Specifically, as shown in FIG. 2 , the attenuation infrared emission module 10 includes an attenuation resistor R1, a first transistor Q1 and an infrared emission diode D1;

One end of the attenuation resistor R1 is connected to the third pin of the control processing chip U1, and the other end of the attenuation resistor R1 is connected to the base of the first transistor Q1, wherein the attenuation resistor R1 is used to The high level sent by the control processing chip U1 is attenuated, thereby reducing the distance of the infrared IR signal sent by the emitting diode, and adjusting the detection distance and the actual sending and receiving distance. The collector of the first transistor Q1 is connected to The cathode of the infrared emitting diode D1 and the anode of the infrared emitting diode D1 are connected in series with the first capacitor C1 and the second capacitor C2;

The emitter of the first transistor Q1 is grounded.

Further, the attenuated infrared emission module 10 further includes a control processing chip U1 and a crystal oscillator X1;

The 1 pin of the crystal oscillator X1 is connected to the first pin of the control and processing chip U1, and the 2 pin of the crystal oscillator X1 is connected to the second pin of the control and processing chip U1.

The crystal oscillator X1 is used to provide the control processing chip U1 with a clock frequency and an electrical signal, so that the control processing chip U1 can enter a working state.

Further, the attenuated infrared emission module 10 further includes a battery BAT and a switching device K;

The negative electrode of the battery BAT is grounded, and the positive electrode of the battery BAT is connected to one end of the switching device K for controlling the power supply state of the detection device.

Further, the attenuated infrared emission module 10 further includes a first capacitor C1 and a second capacitor C2;

The first capacitor C1 and the second capacitor C2 are connected in series with the other end of the switching device K, and are used to filter the ripple of the power output from the battery BAT to avoid electromagnetic interference.

In this embodiment, as shown in the attenuated infrared emission module 10 in FIG. 2 , after the user closes the switching device K, the power in the battery BAT can be filtered by the first capacitor C1 and the second capacitor C2 for ripple filtering. The filtered power flows into pin 22 of the control and processing chip U1 to supply power to the control and processing chip U1, so that the crystal oscillator X1 connected to the control and processing chip U1 starts to vibrate. At this time, the control and processing chip U1 officially enters the working state.

After the control processing chip U1 enters the working state, when the 8-pin and 23-pin connection is closed, it will send out a 12-pin output command, and then output a high level to the attenuation resistor R1, and the high level will reach the first three after passing through the attenuation resistor R1. The base of the transistor Q1 makes the first transistor Q1 saturate and conduct.

In addition to outputting the power output from the battery BAT to the control processing chip U1 via the first capacitor C1 and the second capacitor C2, the power is also output to the infrared emitting diode D1 and the first capacitor C2 via the first capacitor C1 and the second capacitor C2. The collector of a transistor Q1, so the power supply at this time forms a loop, so that the infrared emitting diode D1 emits an attenuated infrared IR signal.

Specifically, as shown in FIG. 2 , the detection and prompting module 20 further includes a second transistor Q2 and a light-emitting diode D3;

The base of the second transistor Q2 is connected to the first resistor R2, the collector of the second transistor Q2 is connected to the anode of the light-emitting diode D3, and the cathode of the light-emitting diode D3 is grounded.

When the light-emitting diode D3 performs a lighting operation, it means that the receiving device can normally receive the infrared signal.

Further, the detection and prompting module 20 includes a socket CN1, and the socket CN1 includes a VCC pin, a GND pin and a PUT pin;

The socket CN1 is used to connect the detection prompt module 20 and the receiving device, the VCC pin is used to supply power to the receiving device connected to the detection device, and the PUT pin is used to receive the level sent by the OUT pin of the receiving device. Signal, the GND pin is grounded to ensure the safety of the detection device during use.

Further, the detection and prompting module 20 further includes a zener diode D2 and a first resistor R2;

The negative pole of the zener diode D2 is connected to the PUT pin of the socket CN1. The zener diode D2 can keep the voltage across the load basically unchanged, and is connected to a higher voltage in series to protect the electronic components in the circuit and prevent It is broken down by the high level output of the PUT pin. The Zener diode D2 is connected in series with the first resistor R2. In this embodiment, the first resistor R2 is a current-limiting resistor, which is used to limit the current of the branch where it is located, so as to prevent the high level from affecting the connected element. damage to the device.

Further, the detection and prompting module 20 further includes a second resistor R3;

One end of the second resistor R3 is connected to the emitter of the second transistor Q2, the other end of the second resistor R3 is connected between the VCC pin of the socket CN1 and the power supply, the second resistor R3 is also a current limiting resistor to avoid the phenomenon that the power supply voltage output by the +V terminal is too large, thereby causing damage to the circuit of the detection and prompting module 20 .

In this embodiment, as shown in the detection and prompting module 20 in FIG. 2 , the socket CN1 in the module is connected to the pins in the socket of the receiving device correspondingly, that is, the GND pins of the sockets at both ends are connected to the GND pins, and the VCC pins are connected to the VCC pins. pin, wherein the PUT pin in the detection prompt module 20 is connected with the OUT pin in the receiving device, and is used for receiving the level signal sent by the receiving device.

When the PUT pin of the detection prompt module 20 receives the low level output from the OUT pin in the receiving device, the low level passes through the zener diode D2, the first resistor R2 does not work at this time, and the base of the second transistor Q2 is Low level, so the base of the second transistor Q2 is at a low voltage at this time. The power output from the +V terminal reaches the emitter of the second transistor Q2 after passing through the third resistor, so the emitter at this time is extremely high voltage. The emitter and collector of the second triode Q2 are directly turned on, and the power output from the +V terminal flows into the light-emitting diode D3. The light-emitting diode D3 lights up after obtaining the voltage output by the second triode Q2 to indicate the operation. The personnel receiving device can function normally.

When the PUT pin of the detection prompt module 20 receives a high level output from the OUT pin in the receiving device, the high level at this time will break down the Zener diode D2, in order to avoid the high level causing the circuit of the detection prompt module 20 to be affected If it is damaged, the first resistor R2 starts to work at this time to limit the current of the high level, and the high level after the current limitation flows into the base of the second transistor Q2, and the base at this time is a high voltage. The power output from the +V terminal will still reach the emitter of the second transistor Q2 through the third resistor, and then the emitter is extremely high voltage, then the emitter and collector will be disconnected at this time, so that the power supply of the +V terminal The light-emitting diode D3 cannot be reached through the third resistor and the second transistor Q2, so the light-emitting diode D3 cannot be turned on at this time. When the operator observes that the detection device is not turned on, he can know that the receiving device exists. Information about abnormal operation.

This embodiment also provides a detection device, the detection device includes the detection circuit of the receiving device as described above, and the detection circuit of the receiving device includes an attenuation infrared emission module 10, a detection prompt module 20, and a power supply module 30;

The power input terminals of the detection prompt module 20 and the attenuation infrared emission module 10 are connected to the power output terminal of the power supply module 30;

The attenuated infrared transmitting module 10 is used to send infrared IR signals to the receiving device;

The detection and prompting module 20 is used to prompt the operator whether the receiving device is in a running state;

The power supply module 30 is configured to supply power to the detection prompt module 20 and the attenuated infrared emission module 10 .

The specific structure of the detection device refers to the above-mentioned embodiments. Since the detection device adopts all the technical solutions of the above-mentioned embodiments of the detection circuit of the receiving device, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. This will not be repeated one by one.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural transformations based on the contents of the description and accompanying drawings of the present invention are based on the concept of the present invention. , or directly/indirectly applied in other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. The detection circuit of the receiving device is characterized by comprising an attenuation infrared emission module, a detection prompt module and a power supply module;

the power input ends of the detection prompt module and the attenuation infrared emission module are connected with the power output end of the power supply module;

the attenuated infrared emission module is used for sending an infrared IR signal to a receiving device;

the detection prompting module is used for prompting an operator whether the receiving device is in a running state;

and the power supply module is used for supplying power to the detection prompt module and the attenuation infrared emission module.

2. The detection circuit of a receiving device according to claim 1, wherein the attenuated infrared emission module comprises an attenuating resistor, a first triode, and an infrared emission diode;

one end of the attenuation resistor is connected with the base electrode of the first triode, and the collector electrode of the first triode is connected with the negative electrode of the infrared emitting diode;

and the emitter of the first triode is grounded.

3. The detection circuit of a receiving device according to claim 2, wherein the attenuated infrared emission module further comprises a control processing chip and a crystal oscillator;

a pin 1 of the crystal oscillator is connected with a first pin of the control processing chip, and a pin 2 of the crystal oscillator is connected with a second pin of the control processing chip;

and a third pin of the control processing chip is connected with the other end of the attenuation resistor.

4. The detection circuit of a receiving device according to claim 3, wherein said attenuated infrared emission module further comprises a battery and a switching device;

the negative pole of the battery is grounded, and the positive pole of the battery is connected with one end of the switch device.

5. The detection circuit of a receiving device according to claim 4, wherein the attenuated infrared emission module further comprises a first capacitor and a second capacitor;

one end of the first capacitor and one end of the second capacitor are connected in series with the other end of the switching device, and the other ends of the first capacitor and the second capacitor are connected in series with the anode of the infrared emitting diode.

6. The detection circuit of the receiving device according to claim 1, wherein the detection prompting module comprises a second triode and a light emitting diode;

and the collector of the second triode is connected with the anode of the light-emitting diode, and the cathode of the light-emitting diode is grounded.

7. The detection circuit of a receiving device according to claim 6, wherein the detection prompting module further comprises a socket, the socket comprising a VCC pin, a GND pin, and a PUT pin;

the socket is used for connecting the detection prompting module and the receiving device.

8. The detection circuit of a receiving apparatus according to claim 7, wherein the detection prompting module further includes a zener diode and a first resistor;

and the cathode of the voltage stabilizing diode is connected with the PUT pin of the socket, and the voltage stabilizing diode is connected with the first resistor in series.

9. The detection circuit of a receiving device according to claim 8, wherein the detection hint module further comprises a second resistor;

one end of the second resistor is connected with an emitting electrode of the second triode, and the other end of the second resistor is connected between a VCC pin of the socket and the power supply.

10. A detection device, characterized in that it comprises a detection circuit of a receiving device according to any one of claims 1 to 9.

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