JP2634555B2 - Equipment function inspection system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a function test system for a device for performing a function test when the device is assembled.

[0002]

2. Description of the Related Art Normally, for example, a water heater comprises, as shown in FIG. 3, a setting means 101 for setting a hot water temperature of a bath, a detecting means 102 for detecting a hot water temperature and the like, and an actuator 103 such as a proportional valve. And a microcomputer 104 for controlling the actuator 103 so that the detected hot water temperature becomes the set hot water temperature.

[0005] A function test performed when the assembly of the device is completed is performed as follows. By turning on one of the dip switches 106 provided on the standing board 105, the water heater can be forcedly operated.

[0004] Further, all the dip switches 106 are turned off to put the water heater in a normal operation state, an inspection device is connected to a maintenance connector 108 connected to an input port 107, and a data signal for inspection is input.
Performs an operation corresponding to the data signal.

[0005]

However, the above prior art has the following disadvantages. (A) To prevent noise contamination, the maintenance connector 10
8 needs to be disposed near the microcomputer 104, so that it is difficult to connect an inspection device.

(A) In order to improve the connectivity of the inspection equipment and the function inspection, the maintenance connector 108 is set up and the substrate 1
If it is arranged on the area 05, a means such as a wire connecting the maintenance connector 108 and the input port 107 is required, and noise is likely to be mixed.

(C) The use efficiency of the input port 109 is inferior, and many DIP switches 106 are required.

An object of the present invention is to provide a maintenance connector for connecting an inspection device near a switch for forcibly operating without drawing a new connection line.
The purpose of the present invention is to provide a function inspection system for equipment.

[0009]

In order to solve the above-mentioned problems,
The present invention has a setting means for setting a physical quantity, a detecting means for detecting a physical quantity of a controlled system, an actuator for increasing and decreasing the physical quantity, and a serial communication port, and the actuator based on the detected physical quantity and the set physical quantity. And a pair of switches for forced operation assignment, one end of which is grounded and the other end connected to the serial communication port by a connection line, and connected to the other end of each switch. A configuration including a pair of maintenance connectors for connecting an inspector having a function is employed.

[0010]

When the assembly of the equipment is completed, the following function inspection is performed. By the combination of the ON states of the switches, the device can be brought into a desired (three kinds) forced operation state, and the operation of the actuator can be confirmed.

In addition, by connecting the inspection device to the maintenance connector (all switches are in an off state and the devices are in a normal operation state), bit serial data is exchanged between the inspection device and the microcomputer, so that the inspection device is operated in the normal operation state. Functional inspection can be performed.

[0012]

【The invention's effect】

(A) By connecting the other end of the switch for forced operation assignment and the maintenance connector with a short line, the connection line can be shared, and the maintenance connector can be arranged near the switch that performs the forced operation. Function inspection efficiency is improved.

(I) The switch and the maintenance connector and the microcomputer are connected by two connection lines, and the two are exchanged data by serial communication. Therefore, the switch and the maintenance connector are resistant to noise contamination, and the function of the switch and the maintenance connector is inspected. Can be placed where it is easy to carry out, and inspection equipment can be easily connected.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. The device function inspection system A includes a setting unit 1, a detection unit 2, an actuator 3, and a DI for forced operation assignment.
It is composed of P switches 4 and 5, a maintenance connector 6, and a microcomputer 7 for controlling the actuator 3, and is employed in a water heater (not shown).

The setting means 1 is a push button switch, a rotary switch, an encoder, and the like, and sets the amount of hot water, the hot water temperature of the bath, the hot water temperature, and the like.

The detecting means 2 includes a thermistor, a Hall element,
It is a flow rate sensor, a water level sensor, and the like, and detects the temperature of hot water in a bath, the temperature of hot water, the number of rotations of a fan, the amount of hot water and the like.

The actuator 3 is a proportional valve, a solenoid valve, a combustion fan, a three-way valve, a hopper, a water level servo, an automatic water level control device, and the like. Increase or decrease the amount of water supplied.

The DIP switches 4 and 5 disposed on the standing board 8 have one end grounded and the other end connected to serial communication ports 71 and 7 via connection lines 41 and 51 and resistors 42 and 52.
2 connected. The connection lines 41 and 51 are connected to a + 5V line via pull-up resistors 43 and 53.

The maintenance connector 6 which is provided on the standing substrate 8 and connects the inspection device having the UART function, has a terminal 6
1 and 62 are connected to the other ends of the switches 4 and 5, respectively.
1, the terminal 63 is grounded, and the terminal 64 is connected to + 5V.

The microcomputer 7 having the serial communication ports 71 and 72 determines the contact state of the DIP switches 4 and 5 as shown in the flowchart of FIG. 2 and performs forced operation or normal operation (including function test operation). Do.

At step s1, the microcomputer 7
Determines whether or not the switch 4 is in the off state. If the switch 4 is in the off state (YES), the process proceeds to step s2. If the switch 4 is in the on state (NO), the process proceeds to step s5.

At step s2, it is determined whether or not the switch 5 is off. If it is off (YES), the process proceeds to step s3, and if it is on (NO), the process proceeds to step s4.

When it is determined that both the switches 4 and 5 are off (step s3), the microcomputer 7
Is based on the hot water temperature, hot water temperature, fan rotation speed, hot water amount and the like detected by the detecting means 2 and the hot water amount, hot water temperature, hot water temperature and the like set by the setting means 1. Actuator drive circuit 31 so that actuators 3 such as a proportional valve, a solenoid valve, a combustion fan, a three-way valve, and a hopper are appropriately controlled.
To send a control signal to perform normal operation.

During normal operation, the microcomputer 7
The hot water temperature of the bath detected by the detecting means 2, the hot water supply temperature, the number of rotations of the fan, the amount of hot water, and the amount of hot water set by the setting means 1;
Proportional valve, solenoid valve, based on bath water temperature, hot water temperature, etc.
A control signal is sent to the actuator drive circuit 31 so that the actuators 3 such as the combustion fan, the three-way valve, and the hopper are appropriately controlled.

When the switches 4 and 5 are both in the OFF state (during normal operation), an operation signal for operating only the specific actuator 3 and a filling data are sent from an inspection device (not shown) connected to the maintenance connector 6. When a hot water filling data read signal for transferring data or a failure record signal for transferring failure record data, a signal of each sensor information, an operation status, an operation (use) status, etc. are serially input to the connection lines 41 and 51, the water heater is turned on. Perform a function check operation.

At step s4, the microcomputer 7
Sends a control signal for forcibly and strongly operating the actuator 3 to the actuator driving circuit 31, and the water heater forcibly burns at level 8.

At step s5, it is determined whether or not the switch 5 is off. If the switch 5 is off (YES), the process proceeds to step s6. If it is on (NO), the process proceeds to step s7.

At step s6, the microcomputer 7
Sends a control signal for forcibly weakening the actuator 3 to the actuator drive circuit 31, and the water heater forcibly burns at level 1.

At step s7, the microcomputer 7
Sends a control signal for forcibly operating the actuator 3 to the actuator drive circuit 31, and the gas water heater forcibly burns at level 4.

Hereinafter, advantages of this embodiment will be described. [A] Serial communication port 7 of microcomputer 7
The other ends of the DIP switches 4 and 5 for forced operation assignment are connected to the terminals 1 and 72 via resistors 42 and 52 and connection lines 41 and 51, and the terminals 61 and 62 of the maintenance connector 6 are connected to the other ends.
, The maintenance connector 6 can be provided on the substrate 8 without newly providing a connection line for connecting the terminals 61 and 62 of the maintenance connector 6 to the input port of the microcomputer 7. . That is, since the maintenance connector 6 and the DIP switches 4 and 5 can be arranged on the same standing board 8, the efficiency of function inspection can be improved.

[I] The other ends of the DIP switches 4 and 5 and the terminals 61 and 62 of the maintenance connector 6 and the serial communication ports 71 and 72 of the microcomputer 7 are connected to the connection lines 41 and 51 (through resistors 42 and 52). 2), and performs serial communication by exchanging bit-serial data, so that it is resistant to external noise. Even if the connection lines 41 and 51 are lengthened, it is hardly affected by noise. , And the maintenance connector 6 can be arranged in a place where maintenance can be easily performed, and connection of inspection equipment can be easily performed.

(C) Since a switch is connected to the serial communication ports 71 and 72 of the microcomputer 7, the forced operation (three types) and the normal operation are performed by two DIPs.
Since the assignment can be made by the switches 4 and 5, the parts cost can be saved and the occupied space can be reduced.

The present invention includes the following embodiments in addition to the above embodiments. a. The forced operation assigned in steps s4, s6, and s7 in FIG. 2 may be other than “forced”, “forced weak”, and “forced”, for example, “forced weak”, “forced strong”,
“Forced” may be used.

B. The shape of the maintenance connector may be a terminal shape, a jack shape, a socket shape, a harness shape, or the like.

C. In the above-described embodiment, a system in which the function test system of the device is applied to the water heater is shown. However, a device equipped with a microcomputer and having to perform forced operation such as increase / decrease in capacity or multiple operations during the function test (for example, , Heaters, air conditioners, cookers, various home appliances, automobiles, etc.), and the same effects can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a device function inspection system according to the present invention.

FIG. 2 is a flowchart showing a relationship between a DIP switch and forced operation in the system.

FIG. 3 is an explanatory diagram of a conventional device function inspection system.

[Explanation of symbols]

 Reference Signs List 1 setting means 2 detecting means 3 actuator 4, 5 DIP switch (switch) 6 maintenance connector 7 microcomputer 71, 72 serial communication port

Claims (1)

(57) [Claims] 1. A control device comprising: a setting means for setting a physical quantity; a detecting means for detecting a physical quantity of a controlled system; an actuator for increasing and decreasing the physical quantity; and a serial communication port, wherein the serial communication port is provided based on the detected physical quantity and the set physical quantity. A microcomputer for operating the actuator; a pair of switches for forced operation allocation, one end of which is grounded and the other end connected to the serial communication port by a connection line; A function inspection system for a device including a pair of maintenance connectors for connecting an inspection device having an art function.