Relay circuit for detonator and delay detonator

Abstract

The present application relates to electronic detonator technical field, specifically said is the relay circuit for initiator and delay detonator. Its features include sending module, power module and reverse modulation module. The power module is connected with sending module and reverse modulation module, and the power module is used for providing working voltage for sending module and reverse modulation module. The sending module receives input signal, and shapes and drives the input signal to form output signal. The reverse modulation module samples output signal, and modulates the output signal to form modulation signal. The input signal contains modulation signal and control signal. The communication reliability of initiator and delay detonator using the circuit is good, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic detonator, in particular to a relay circuit for a detonator and a delay detonator. BACKGROUND

[0002] With the development of science and technology, in the civil explosive industry, the original ordinary detonator is replaced by the industrial digital electronic detonator. The industrial digital electronic detonator mainly includes a detonator and a plurality of delay detonators, and the detonator and the plurality of delay detonators are connected by a cable. The typical connection length (detonation distance) of the detonator and the delay detonator is 500-1000 meters, and the typical number of delay detonators is 500-1000. When in use, the delay detonator is detected and relevant commands are issued on the detonator according to the regulations, and the detonation action is completed after the set delay, and the data is uploaded to the system after the detonation is completed. For safety reasons, the distance between the detonator and the operator should be increased as much as possible during operation, especially when the amount of medicine is large, the demand is stronger.

[0003] At present, the traditional method is to increase the length of the cable. However, the cable has resistance, and increasing the length of the cable will significantly increase the line resistance. Due to the large number of delay detonators, the cumulative current will generate a voltage drop on the cable, and the excessive cable resistance will make the voltage drop too large to affect the reliability of the communication between the detonator and the detonator, and in severe cases, it may cause the loss of the cannon, and the subsequent processing is more troublesome and dangerous. At the same time, the explosion will damage the cable, and the long cable will significantly increase the cost of single blasting. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a relay circuit for a detonator and a delay detonator, which has good communication reliability and low cost. The problem of poor reliability and high blasting cost caused by long communication distance in the prior art is solved.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The relay circuit for a detonator and a delay detonator of the present application comprises a sending module, a power module and a reverse modulation module. The power module is connected with the sending module and the reverse modulation module, and the power module is used to provide working voltage for the sending module and the reverse modulation module. The sending module receives an input signal, shapes and drives the input signal to form an output signal. The reverse modulation module samples the output signal and directionally modulates the output signal to form a modulated signal. The input signal contains the modulated signal and a control signal.

[0007] The sending module comprises a receiving signal sampling and shaping circuit and a sending signal driving circuit, the output end of the receiving signal sampling and shaping circuit is connected with the input end of the sending signal driving circuit, the receiving signal sampling and shaping circuit is used for receiving an input signal and sending the shaped input signal to the sending signal driving circuit, and the sending signal driving circuit drives the shaped input signal to form an output signal.

[0008] The reverse modulation module comprises a sampling resistor, a reverse communication detection circuit, a buffer amplification circuit and a voltage-current conversion circuit. The sampling resistor is connected in series with the output end of the sending signal driving circuit, the input end of the reverse communication detection circuit is connected with the sampling resistor, the output end of the reverse communication detection circuit is connected with the input end of the buffer amplification circuit, and the output end of the buffer amplification circuit is connected with the voltage-current conversion circuit. The reverse communication detection circuit is used for sampling and detecting the load current of the sampling resistor to form a sampling current signal sent to the buffer amplification circuit, the buffer amplification circuit amplifies the sampling current signal to form an amplified current signal sent to the voltage-current conversion circuit, and the voltage-current conversion circuit converts the amplified current signal into a voltage signal, which is the modulation signal.

[0009] The resistance of the sampling resistor is 0.01-100 ohms.

[0010] The power module comprises an input power, a shaping voltage stabilizing circuit and a sending high voltage generating circuit. The input power is connected with the input ends of the shaping voltage stabilizing circuit and the sending high voltage generating circuit, the output end of the shaping voltage stabilizing circuit is connected with the receiving signal sampling and shaping circuit, the voltage-current conversion circuit, the buffer amplification circuit and the reverse communication detection circuit respectively, and the sending high voltage generating circuit is connected with the sending signal driving circuit. The shaping voltage stabilizing circuit is used for shaping and stabilizing the voltage of the input power to supply power to the receiving signal sampling and shaping circuit, the voltage-current conversion circuit, the buffer amplification circuit and the reverse communication detection circuit. The sending high voltage generating circuit is used for forming high voltage from the voltage of the input power to supply power to the sending signal driving circuit.

[0011] The input power is a battery.

[0012] The above scheme has the following advantages: Since the power supply module of the relay circuit for the detonator and time-delay detonator of this invention is adapted and connected to the transmitting module and the reverse modulation module, the power supply module provides operating voltage to the transmitting module and the reverse modulation module. The transmitting module receives the input signal, shapes and drives the input signal to form an output signal. The reverse modulation module samples the output signal and performs directional modulation on the output signal to form a modulated signal. The input signal contains the modulated signal and the control signal transmitted from the front end. In use, multiple relay circuits are connected in series between the detonator and the detonator. A typical distance is 0-5 km from the detonator to the input terminal of the relay circuit, and 0-5 km from the output terminal of the relay circuit to the detonator. During operation, the detonator's control signal enters the transmitting module of the first relay circuit via cable. The transmitting module shapes and drives the control signal, and uses an inverse modulation module to sample and modulate the signal generated by the transmitting module. This modulated signal is then integrated with the signal transmitted through the previous short cable before entering the transmitting module. This ensures that the output signal generated by the transmitting module has almost no attenuation compared to the control signal emitted by the detonator. As the control signal is transmitted downwards, even the signal strength received by the farthest electronic detonator is almost identical to the initial signal generated by the detonator, thus avoiding the problem of decreased communication reliability due to excessive communication distance and preventing safety hazards. Furthermore, a protective shell can be installed on the outside of the relay circuit to ensure that the explosion will not damage the relay circuit, allowing for its recycling. Simultaneously, the relay circuit divides the long cable into multiple segments, allowing the cable farther from the detonation point to be recycled and reused, improving operational safety and saving costs. Attached Figure Description

[0013] Figure 1 This is a circuit diagram of the relay circuit for the initiator and time-delay detonator of the present invention;

[0014] Figure 2 This is a schematic diagram of the operation of the relay circuit for the detonator and the time-delay detonator of the present invention in series.

[0015] Figure 3 This is a schematic diagram of the operation of the relay circuit for the detonator and the time-delay detonator of the present invention in parallel. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0017] like Figure 1 As shown, the relay circuit for the detonator and time-delay detonator of the present invention includes a transmitting module, a power supply module, and a reverse modulation module.

[0018] The power module includes an input power supply, a voltage shaping and regulating circuit, and a high-voltage transmission generation circuit. In this embodiment, the input power supply is a battery. The battery is connected to the input terminals of the voltage shaping and regulating circuit and the high-voltage transmission generation circuit. The output terminal of the voltage shaping and regulating circuit is connected to the receiving signal sampling and shaping circuit, the voltage-to-current conversion circuit, the buffer amplification circuit, and the reverse communication detection circuit, respectively. The high-voltage transmission generation circuit is connected to the transmitting signal driving circuit. The voltage shaping and regulating circuit is used to shape and regulate the battery voltage to power the receiving signal sampling and shaping circuit, the voltage-to-current conversion circuit, the buffer amplification circuit, and the reverse communication detection circuit. The high-voltage transmission generation circuit is used to generate a high voltage from the battery voltage to power the transmitting signal driving circuit.

[0019] The transmitting module includes a receiving signal sampling and shaping circuit and a transmitting signal driving circuit. The output terminal of the receiving signal sampling and shaping circuit is connected to the input terminal of the transmitting signal driving circuit. The receiving signal sampling and shaping circuit receives the input signal, shapes the input signal, and sends it to the transmitting signal driving circuit. The transmitting signal driving circuit drives the shaped input signal to form an output signal.

[0020] The inverse modulation module includes a sampling resistor Rsense, a reverse communication detection circuit, a buffer amplifier circuit, and a voltage-to-current conversion circuit. The sampling resistor Rsense is connected in series with the output of the transmitting signal drive circuit. The input of the reverse communication detection circuit is connected to the sampling resistor Rsense, and its output is connected to the input of the buffer amplifier circuit. The output of the buffer amplifier circuit is connected to the voltage-to-current conversion circuit. The reverse communication detection circuit samples and detects the load current of the sampling resistor Rsense, generating a sampled current signal which is sent to the buffer amplifier circuit. The buffer amplifier circuit amplifies the sampled current signal, generating an amplified current signal which is sent to the voltage-to-current conversion circuit. The voltage-to-current conversion circuit converts the amplified current signal into a voltage signal, which is the modulation signal.

[0021] In this embodiment, the resistance of the sampling resistor Rsense is 0.01-100 ohms.

[0022] The specific circuit structures of the shaping and regulating circuit, the high voltage generation circuit, the receiving signal sampling and shaping circuit, the transmitting signal driving circuit, the reverse communication detection circuit, the buffer amplifier circuit, and the voltage-current conversion circuit are all common knowledge and will not be elaborated here.

[0023] like Figure 2 As shown, the relay circuits of the present invention can be cascaded to further increase the communication distance. That is, a long cable is used between the detonator and the detonator, and multiple relay circuits are connected in series between the long cables. The connection method is detonator + cable + relay circuit 1 + cable ... relay circuit N + cable + detonator.

[0024] As Figure 3 shown, the relay circuit can be used in parallel to increase the load driving capacity, the connection mode is initiator + cable + relay circuit 1 + … + relay circuit m, each (1 … m) relay circuit can be cascaded cable and relay circuit.

[0025] In operation, the shaping and stabilizing circuit shapes and stabilizes the voltage of the battery to supply power to the receiving signal sampling and shaping circuit, the voltage and current conversion circuit, the buffer amplification circuit and the reverse communication detection circuit. The sending high voltage generating circuit forms high voltage from the battery voltage to supply power to the sending signal driving circuit. The control signal of the initiator enters the receiving signal sampling and shaping circuit of the first relay circuit through the first short cable, the receiving signal sampling and shaping circuit sends the shaped control signal to the sending signal driving circuit, the sending signal driving circuit drives the shaped control signal and sends it to the sampling resistor Rsense, the reverse communication detection circuit samples and detects the load current of the sampling resistor Rsense and forms a sampling current signal to send to the buffer amplification circuit, the buffer amplification circuit amplifies the sampling current signal to form an amplified current signal to send to the voltage and current conversion circuit, the voltage and current conversion circuit converts the amplified current signal into a voltage signal, which is the modulation signal, the adjustment signal enters the receiving signal sampling and shaping circuit, so that the input signal of the receiving signal sampling and shaping circuit is the control signal and the modulation signal, thereby ensuring that the output signal generated by the sending module has almost no attenuation compared to the control signal emitted by the initiator, so that the control signal is transmitted downward, even if the electronic detonator located at the farthest end of the cable receives a signal with almost no difference in strength compared to the initial signal generated by the initiator, thereby avoiding the problem of reduced communication reliability due to excessive communication distance and avoiding safety hazards. Moreover, a protective shell can be provided outside the relay circuit to ensure that the explosion does not damage the relay circuit, so that the relay circuit can be recycled, and at the same time, since the cable is segmented, the cable far from the explosion center can be recycled, thereby improving operational safety and saving costs.

Claims

1. A relay circuit for a primer and delay detonator, characterized in that, The application relates to a signal transmission device, which comprises a sending module, a power module and a reverse modulation module; the power module is connected with the sending module and the reverse modulation module, and is used for providing working voltage for the sending module and the reverse modulation module; the sending module receives an input signal, shapes and drives the input signal to form an output signal; the reverse modulation module samples the output signal and directionally modulates the output signal to form a modulation signal; the input signal contains the modulation signal and a control signal; the sending module contains a receiving signal sampling and shaping circuit and a sending signal driving circuit, the output end of the receiving signal sampling and shaping circuit is connected with the input end of the sending signal driving circuit, the receiving signal sampling and shaping circuit is used for receiving the input signal, shaping the input signal and sending the shaped input signal to the sending signal driving circuit, and the sending signal driving circuit drives the shaped input signal to form the output signal; the reverse modulation module contains a sampling resistor, a reverse communication detection circuit, a buffer amplification circuit and a voltage-current conversion circuit; the sampling resistor is connected in series at the output end of the sending signal driving circuit, the input end of the reverse communication detection circuit is connected with the sampling resistor, the output end of the reverse communication detection circuit is connected with the input end of the buffer amplification circuit, and the output end of the buffer amplification circuit is connected with the voltage-current conversion circuit; the reverse communication detection circuit is used for sampling and detecting the load current of the sampling resistor, sending a sampling current signal to the buffer amplification circuit, amplifying the sampling current signal by the buffer amplification circuit to form an amplified current signal and sending the amplified current signal to the voltage-current conversion circuit, and converting the amplified current signal into a voltage signal by the voltage-current conversion circuit, wherein the voltage signal is the modulation signal.

2. The relay circuit for a detonator and a delay detonator according to claim 1, wherein The resistance value of the sampling resistor is 0.01-100 ohms.

3. The relay circuit for a booster and delay detonator according to claim 1, wherein The power module comprises an input power, a shaping voltage stabilizing circuit and a sending high-voltage generating circuit; the input power is connected with the input ends of the shaping voltage stabilizing circuit and the sending high-voltage generating circuit, the output end of the shaping voltage stabilizing circuit is connected with the receiving signal sampling and shaping circuit, the voltage-current conversion circuit, the buffer amplification circuit and the reverse communication detection circuit respectively, and the sending high-voltage generating circuit is connected with the sending signal driving circuit; the shaping voltage stabilizing circuit is used for shaping and stabilizing the voltage of the input power to supply power for the receiving signal sampling and shaping circuit, the voltage-current conversion circuit, the buffer amplification circuit and the reverse communication detection circuit; and the sending high-voltage generating circuit is used for forming high voltage from the voltage of the input power to supply power for the sending signal driving circuit.

4. The relay circuit for a booster and delay detonator according to claim 3, wherein The input power is a battery.

Images